| /* |
| * thinkpad_acpi.c - ThinkPad ACPI Extras |
| * |
| * |
| * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> |
| * Copyright (C) 2006-2008 Henrique de Moraes Holschuh <hmh@hmh.eng.br> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| * 02110-1301, USA. |
| */ |
| |
| #define TPACPI_VERSION "0.21" |
| #define TPACPI_SYSFS_VERSION 0x020200 |
| |
| /* |
| * Changelog: |
| * 2007-10-20 changelog trimmed down |
| * |
| * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to |
| * drivers/misc. |
| * |
| * 2006-11-22 0.13 new maintainer |
| * changelog now lives in git commit history, and will |
| * not be updated further in-file. |
| * |
| * 2005-03-17 0.11 support for 600e, 770x |
| * thanks to Jamie Lentin <lentinj@dial.pipex.com> |
| * |
| * 2005-01-16 0.9 use MODULE_VERSION |
| * thanks to Henrik Brix Andersen <brix@gentoo.org> |
| * fix parameter passing on module loading |
| * thanks to Rusty Russell <rusty@rustcorp.com.au> |
| * thanks to Jim Radford <radford@blackbean.org> |
| * 2004-11-08 0.8 fix init error case, don't return from a macro |
| * thanks to Chris Wright <chrisw@osdl.org> |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/types.h> |
| #include <linux/string.h> |
| #include <linux/list.h> |
| #include <linux/mutex.h> |
| #include <linux/kthread.h> |
| #include <linux/freezer.h> |
| #include <linux/delay.h> |
| |
| #include <linux/nvram.h> |
| #include <linux/proc_fs.h> |
| #include <linux/sysfs.h> |
| #include <linux/backlight.h> |
| #include <linux/fb.h> |
| #include <linux/platform_device.h> |
| #include <linux/hwmon.h> |
| #include <linux/hwmon-sysfs.h> |
| #include <linux/input.h> |
| #include <linux/leds.h> |
| #include <linux/rfkill.h> |
| #include <asm/uaccess.h> |
| |
| #include <linux/dmi.h> |
| #include <linux/jiffies.h> |
| #include <linux/workqueue.h> |
| |
| #include <acpi/acpi_drivers.h> |
| #include <acpi/acnamesp.h> |
| |
| #include <linux/pci_ids.h> |
| |
| |
| /* ThinkPad CMOS commands */ |
| #define TP_CMOS_VOLUME_DOWN 0 |
| #define TP_CMOS_VOLUME_UP 1 |
| #define TP_CMOS_VOLUME_MUTE 2 |
| #define TP_CMOS_BRIGHTNESS_UP 4 |
| #define TP_CMOS_BRIGHTNESS_DOWN 5 |
| #define TP_CMOS_THINKLIGHT_ON 12 |
| #define TP_CMOS_THINKLIGHT_OFF 13 |
| |
| /* NVRAM Addresses */ |
| enum tp_nvram_addr { |
| TP_NVRAM_ADDR_HK2 = 0x57, |
| TP_NVRAM_ADDR_THINKLIGHT = 0x58, |
| TP_NVRAM_ADDR_VIDEO = 0x59, |
| TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, |
| TP_NVRAM_ADDR_MIXER = 0x60, |
| }; |
| |
| /* NVRAM bit masks */ |
| enum { |
| TP_NVRAM_MASK_HKT_THINKPAD = 0x08, |
| TP_NVRAM_MASK_HKT_ZOOM = 0x20, |
| TP_NVRAM_MASK_HKT_DISPLAY = 0x40, |
| TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, |
| TP_NVRAM_MASK_THINKLIGHT = 0x10, |
| TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, |
| TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, |
| TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, |
| TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, |
| TP_NVRAM_MASK_MUTE = 0x40, |
| TP_NVRAM_MASK_HKT_VOLUME = 0x80, |
| TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, |
| TP_NVRAM_POS_LEVEL_VOLUME = 0, |
| }; |
| |
| /* ACPI HIDs */ |
| #define TPACPI_ACPI_HKEY_HID "IBM0068" |
| |
| /* Input IDs */ |
| #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ |
| #define TPACPI_HKEY_INPUT_VERSION 0x4101 |
| |
| |
| /**************************************************************************** |
| * Main driver |
| */ |
| |
| #define TPACPI_NAME "thinkpad" |
| #define TPACPI_DESC "ThinkPad ACPI Extras" |
| #define TPACPI_FILE TPACPI_NAME "_acpi" |
| #define TPACPI_URL "http://ibm-acpi.sf.net/" |
| #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" |
| |
| #define TPACPI_PROC_DIR "ibm" |
| #define TPACPI_ACPI_EVENT_PREFIX "ibm" |
| #define TPACPI_DRVR_NAME TPACPI_FILE |
| #define TPACPI_DRVR_SHORTNAME "tpacpi" |
| #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" |
| |
| #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" |
| #define TPACPI_WORKQUEUE_NAME "ktpacpid" |
| |
| #define TPACPI_MAX_ACPI_ARGS 3 |
| |
| /* rfkill switches */ |
| enum { |
| TPACPI_RFK_BLUETOOTH_SW_ID = 0, |
| TPACPI_RFK_WWAN_SW_ID, |
| }; |
| |
| /* Debugging */ |
| #define TPACPI_LOG TPACPI_FILE ": " |
| #define TPACPI_ERR KERN_ERR TPACPI_LOG |
| #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG |
| #define TPACPI_INFO KERN_INFO TPACPI_LOG |
| #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG |
| |
| #define TPACPI_DBG_ALL 0xffff |
| #define TPACPI_DBG_INIT 0x0001 |
| #define TPACPI_DBG_EXIT 0x0002 |
| #define dbg_printk(a_dbg_level, format, arg...) \ |
| do { if (dbg_level & a_dbg_level) \ |
| printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \ |
| } while (0) |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUG |
| #define vdbg_printk(a_dbg_level, format, arg...) \ |
| dbg_printk(a_dbg_level, format, ## arg) |
| static const char *str_supported(int is_supported); |
| #else |
| #define vdbg_printk(a_dbg_level, format, arg...) |
| #endif |
| |
| #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") |
| #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") |
| #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) |
| |
| |
| /**************************************************************************** |
| * Driver-wide structs and misc. variables |
| */ |
| |
| struct ibm_struct; |
| |
| struct tp_acpi_drv_struct { |
| const struct acpi_device_id *hid; |
| struct acpi_driver *driver; |
| |
| void (*notify) (struct ibm_struct *, u32); |
| acpi_handle *handle; |
| u32 type; |
| struct acpi_device *device; |
| }; |
| |
| struct ibm_struct { |
| char *name; |
| |
| int (*read) (char *); |
| int (*write) (char *); |
| void (*exit) (void); |
| void (*resume) (void); |
| void (*suspend) (pm_message_t state); |
| |
| struct list_head all_drivers; |
| |
| struct tp_acpi_drv_struct *acpi; |
| |
| struct { |
| u8 acpi_driver_registered:1; |
| u8 acpi_notify_installed:1; |
| u8 proc_created:1; |
| u8 init_called:1; |
| u8 experimental:1; |
| } flags; |
| }; |
| |
| struct ibm_init_struct { |
| char param[32]; |
| |
| int (*init) (struct ibm_init_struct *); |
| struct ibm_struct *data; |
| }; |
| |
| static struct { |
| #ifdef CONFIG_THINKPAD_ACPI_BAY |
| u32 bay_status:1; |
| u32 bay_eject:1; |
| u32 bay_status2:1; |
| u32 bay_eject2:1; |
| #endif |
| u32 bluetooth:1; |
| u32 hotkey:1; |
| u32 hotkey_mask:1; |
| u32 hotkey_wlsw:1; |
| u32 hotkey_tablet:1; |
| u32 light:1; |
| u32 light_status:1; |
| u32 bright_16levels:1; |
| u32 bright_acpimode:1; |
| u32 wan:1; |
| u32 fan_ctrl_status_undef:1; |
| u32 input_device_registered:1; |
| u32 platform_drv_registered:1; |
| u32 platform_drv_attrs_registered:1; |
| u32 sensors_pdrv_registered:1; |
| u32 sensors_pdrv_attrs_registered:1; |
| u32 sensors_pdev_attrs_registered:1; |
| u32 hotkey_poll_active:1; |
| } tp_features; |
| |
| static struct { |
| u16 hotkey_mask_ff:1; |
| u16 bright_cmos_ec_unsync:1; |
| } tp_warned; |
| |
| struct thinkpad_id_data { |
| unsigned int vendor; /* ThinkPad vendor: |
| * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ |
| |
| char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ |
| char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ |
| |
| u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */ |
| u16 ec_model; |
| |
| char *model_str; /* ThinkPad T43 */ |
| char *nummodel_str; /* 9384A9C for a 9384-A9C model */ |
| }; |
| static struct thinkpad_id_data thinkpad_id; |
| |
| static enum { |
| TPACPI_LIFE_INIT = 0, |
| TPACPI_LIFE_RUNNING, |
| TPACPI_LIFE_EXITING, |
| } tpacpi_lifecycle; |
| |
| static int experimental; |
| static u32 dbg_level; |
| |
| static struct workqueue_struct *tpacpi_wq; |
| |
| /* Special LED class that can defer work */ |
| struct tpacpi_led_classdev { |
| struct led_classdev led_classdev; |
| struct work_struct work; |
| enum led_brightness new_brightness; |
| unsigned int led; |
| }; |
| |
| /**************************************************************************** |
| **************************************************************************** |
| * |
| * ACPI Helpers and device model |
| * |
| **************************************************************************** |
| ****************************************************************************/ |
| |
| /************************************************************************* |
| * ACPI basic handles |
| */ |
| |
| static acpi_handle root_handle; |
| |
| #define TPACPI_HANDLE(object, parent, paths...) \ |
| static acpi_handle object##_handle; \ |
| static acpi_handle *object##_parent = &parent##_handle; \ |
| static char *object##_path; \ |
| static char *object##_paths[] = { paths } |
| |
| TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */ |
| "\\_SB.PCI.ISA.EC", /* 570 */ |
| "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */ |
| "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */ |
| "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */ |
| "\\_SB.PCI0.ICH3.EC0", /* R31 */ |
| "\\_SB.PCI0.LPC.EC", /* all others */ |
| ); |
| |
| TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ |
| TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ |
| |
| TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ |
| /* T4x, X31, X40 */ |
| "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ |
| "\\CMS", /* R40, R40e */ |
| ); /* all others */ |
| |
| TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ |
| "^HKEY", /* R30, R31 */ |
| "HKEY", /* all others */ |
| ); /* 570 */ |
| |
| TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */ |
| "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ |
| "\\_SB.PCI0.VID0", /* 770e */ |
| "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ |
| "\\_SB.PCI0.AGP.VID", /* all others */ |
| ); /* R30, R31 */ |
| |
| |
| /************************************************************************* |
| * ACPI helpers |
| */ |
| |
| static int acpi_evalf(acpi_handle handle, |
| void *res, char *method, char *fmt, ...) |
| { |
| char *fmt0 = fmt; |
| struct acpi_object_list params; |
| union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; |
| struct acpi_buffer result, *resultp; |
| union acpi_object out_obj; |
| acpi_status status; |
| va_list ap; |
| char res_type; |
| int success; |
| int quiet; |
| |
| if (!*fmt) { |
| printk(TPACPI_ERR "acpi_evalf() called with empty format\n"); |
| return 0; |
| } |
| |
| if (*fmt == 'q') { |
| quiet = 1; |
| fmt++; |
| } else |
| quiet = 0; |
| |
| res_type = *(fmt++); |
| |
| params.count = 0; |
| params.pointer = &in_objs[0]; |
| |
| va_start(ap, fmt); |
| while (*fmt) { |
| char c = *(fmt++); |
| switch (c) { |
| case 'd': /* int */ |
| in_objs[params.count].integer.value = va_arg(ap, int); |
| in_objs[params.count++].type = ACPI_TYPE_INTEGER; |
| break; |
| /* add more types as needed */ |
| default: |
| printk(TPACPI_ERR "acpi_evalf() called " |
| "with invalid format character '%c'\n", c); |
| return 0; |
| } |
| } |
| va_end(ap); |
| |
| if (res_type != 'v') { |
| result.length = sizeof(out_obj); |
| result.pointer = &out_obj; |
| resultp = &result; |
| } else |
| resultp = NULL; |
| |
| status = acpi_evaluate_object(handle, method, ¶ms, resultp); |
| |
| switch (res_type) { |
| case 'd': /* int */ |
| if (res) |
| *(int *)res = out_obj.integer.value; |
| success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER; |
| break; |
| case 'v': /* void */ |
| success = status == AE_OK; |
| break; |
| /* add more types as needed */ |
| default: |
| printk(TPACPI_ERR "acpi_evalf() called " |
| "with invalid format character '%c'\n", res_type); |
| return 0; |
| } |
| |
| if (!success && !quiet) |
| printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n", |
| method, fmt0, status); |
| |
| return success; |
| } |
| |
| static int acpi_ec_read(int i, u8 *p) |
| { |
| int v; |
| |
| if (ecrd_handle) { |
| if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) |
| return 0; |
| *p = v; |
| } else { |
| if (ec_read(i, p) < 0) |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| static int acpi_ec_write(int i, u8 v) |
| { |
| if (ecwr_handle) { |
| if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) |
| return 0; |
| } else { |
| if (ec_write(i, v) < 0) |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| #if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY) |
| static int _sta(acpi_handle handle) |
| { |
| int status; |
| |
| if (!handle || !acpi_evalf(handle, &status, "_STA", "d")) |
| status = 0; |
| |
| return status; |
| } |
| #endif |
| |
| static int issue_thinkpad_cmos_command(int cmos_cmd) |
| { |
| if (!cmos_handle) |
| return -ENXIO; |
| |
| if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| /************************************************************************* |
| * ACPI device model |
| */ |
| |
| #define TPACPI_ACPIHANDLE_INIT(object) \ |
| drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ |
| object##_paths, ARRAY_SIZE(object##_paths), &object##_path) |
| |
| static void drv_acpi_handle_init(char *name, |
| acpi_handle *handle, acpi_handle parent, |
| char **paths, int num_paths, char **path) |
| { |
| int i; |
| acpi_status status; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", |
| name); |
| |
| for (i = 0; i < num_paths; i++) { |
| status = acpi_get_handle(parent, paths[i], handle); |
| if (ACPI_SUCCESS(status)) { |
| *path = paths[i]; |
| dbg_printk(TPACPI_DBG_INIT, |
| "Found ACPI handle %s for %s\n", |
| *path, name); |
| return; |
| } |
| } |
| |
| vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", |
| name); |
| *handle = NULL; |
| } |
| |
| static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) |
| { |
| struct ibm_struct *ibm = data; |
| |
| if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) |
| return; |
| |
| if (!ibm || !ibm->acpi || !ibm->acpi->notify) |
| return; |
| |
| ibm->acpi->notify(ibm, event); |
| } |
| |
| static int __init setup_acpi_notify(struct ibm_struct *ibm) |
| { |
| acpi_status status; |
| int rc; |
| |
| BUG_ON(!ibm->acpi); |
| |
| if (!*ibm->acpi->handle) |
| return 0; |
| |
| vdbg_printk(TPACPI_DBG_INIT, |
| "setting up ACPI notify for %s\n", ibm->name); |
| |
| rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); |
| if (rc < 0) { |
| printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n", |
| ibm->name, rc); |
| return -ENODEV; |
| } |
| |
| ibm->acpi->device->driver_data = ibm; |
| sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", |
| TPACPI_ACPI_EVENT_PREFIX, |
| ibm->name); |
| |
| status = acpi_install_notify_handler(*ibm->acpi->handle, |
| ibm->acpi->type, dispatch_acpi_notify, ibm); |
| if (ACPI_FAILURE(status)) { |
| if (status == AE_ALREADY_EXISTS) { |
| printk(TPACPI_NOTICE |
| "another device driver is already " |
| "handling %s events\n", ibm->name); |
| } else { |
| printk(TPACPI_ERR |
| "acpi_install_notify_handler(%s) failed: %d\n", |
| ibm->name, status); |
| } |
| return -ENODEV; |
| } |
| ibm->flags.acpi_notify_installed = 1; |
| return 0; |
| } |
| |
| static int __init tpacpi_device_add(struct acpi_device *device) |
| { |
| return 0; |
| } |
| |
| static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) |
| { |
| int rc; |
| |
| dbg_printk(TPACPI_DBG_INIT, |
| "registering %s as an ACPI driver\n", ibm->name); |
| |
| BUG_ON(!ibm->acpi); |
| |
| ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); |
| if (!ibm->acpi->driver) { |
| printk(TPACPI_ERR |
| "failed to allocate memory for ibm->acpi->driver\n"); |
| return -ENOMEM; |
| } |
| |
| sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); |
| ibm->acpi->driver->ids = ibm->acpi->hid; |
| |
| ibm->acpi->driver->ops.add = &tpacpi_device_add; |
| |
| rc = acpi_bus_register_driver(ibm->acpi->driver); |
| if (rc < 0) { |
| printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n", |
| ibm->name, rc); |
| kfree(ibm->acpi->driver); |
| ibm->acpi->driver = NULL; |
| } else if (!rc) |
| ibm->flags.acpi_driver_registered = 1; |
| |
| return rc; |
| } |
| |
| |
| /**************************************************************************** |
| **************************************************************************** |
| * |
| * Procfs Helpers |
| * |
| **************************************************************************** |
| ****************************************************************************/ |
| |
| static int dispatch_procfs_read(char *page, char **start, off_t off, |
| int count, int *eof, void *data) |
| { |
| struct ibm_struct *ibm = data; |
| int len; |
| |
| if (!ibm || !ibm->read) |
| return -EINVAL; |
| |
| len = ibm->read(page); |
| if (len < 0) |
| return len; |
| |
| if (len <= off + count) |
| *eof = 1; |
| *start = page + off; |
| len -= off; |
| if (len > count) |
| len = count; |
| if (len < 0) |
| len = 0; |
| |
| return len; |
| } |
| |
| static int dispatch_procfs_write(struct file *file, |
| const char __user *userbuf, |
| unsigned long count, void *data) |
| { |
| struct ibm_struct *ibm = data; |
| char *kernbuf; |
| int ret; |
| |
| if (!ibm || !ibm->write) |
| return -EINVAL; |
| |
| kernbuf = kmalloc(count + 2, GFP_KERNEL); |
| if (!kernbuf) |
| return -ENOMEM; |
| |
| if (copy_from_user(kernbuf, userbuf, count)) { |
| kfree(kernbuf); |
| return -EFAULT; |
| } |
| |
| kernbuf[count] = 0; |
| strcat(kernbuf, ","); |
| ret = ibm->write(kernbuf); |
| if (ret == 0) |
| ret = count; |
| |
| kfree(kernbuf); |
| |
| return ret; |
| } |
| |
| static char *next_cmd(char **cmds) |
| { |
| char *start = *cmds; |
| char *end; |
| |
| while ((end = strchr(start, ',')) && end == start) |
| start = end + 1; |
| |
| if (!end) |
| return NULL; |
| |
| *end = 0; |
| *cmds = end + 1; |
| return start; |
| } |
| |
| |
| /**************************************************************************** |
| **************************************************************************** |
| * |
| * Device model: input, hwmon and platform |
| * |
| **************************************************************************** |
| ****************************************************************************/ |
| |
| static struct platform_device *tpacpi_pdev; |
| static struct platform_device *tpacpi_sensors_pdev; |
| static struct device *tpacpi_hwmon; |
| static struct input_dev *tpacpi_inputdev; |
| static struct mutex tpacpi_inputdev_send_mutex; |
| static LIST_HEAD(tpacpi_all_drivers); |
| |
| static int tpacpi_suspend_handler(struct platform_device *pdev, |
| pm_message_t state) |
| { |
| struct ibm_struct *ibm, *itmp; |
| |
| list_for_each_entry_safe(ibm, itmp, |
| &tpacpi_all_drivers, |
| all_drivers) { |
| if (ibm->suspend) |
| (ibm->suspend)(state); |
| } |
| |
| return 0; |
| } |
| |
| static int tpacpi_resume_handler(struct platform_device *pdev) |
| { |
| struct ibm_struct *ibm, *itmp; |
| |
| list_for_each_entry_safe(ibm, itmp, |
| &tpacpi_all_drivers, |
| all_drivers) { |
| if (ibm->resume) |
| (ibm->resume)(); |
| } |
| |
| return 0; |
| } |
| |
| static struct platform_driver tpacpi_pdriver = { |
| .driver = { |
| .name = TPACPI_DRVR_NAME, |
| .owner = THIS_MODULE, |
| }, |
| .suspend = tpacpi_suspend_handler, |
| .resume = tpacpi_resume_handler, |
| }; |
| |
| static struct platform_driver tpacpi_hwmon_pdriver = { |
| .driver = { |
| .name = TPACPI_HWMON_DRVR_NAME, |
| .owner = THIS_MODULE, |
| }, |
| }; |
| |
| /************************************************************************* |
| * sysfs support helpers |
| */ |
| |
| struct attribute_set { |
| unsigned int members, max_members; |
| struct attribute_group group; |
| }; |
| |
| struct attribute_set_obj { |
| struct attribute_set s; |
| struct attribute *a; |
| } __attribute__((packed)); |
| |
| static struct attribute_set *create_attr_set(unsigned int max_members, |
| const char *name) |
| { |
| struct attribute_set_obj *sobj; |
| |
| if (max_members == 0) |
| return NULL; |
| |
| /* Allocates space for implicit NULL at the end too */ |
| sobj = kzalloc(sizeof(struct attribute_set_obj) + |
| max_members * sizeof(struct attribute *), |
| GFP_KERNEL); |
| if (!sobj) |
| return NULL; |
| sobj->s.max_members = max_members; |
| sobj->s.group.attrs = &sobj->a; |
| sobj->s.group.name = name; |
| |
| return &sobj->s; |
| } |
| |
| #define destroy_attr_set(_set) \ |
| kfree(_set); |
| |
| /* not multi-threaded safe, use it in a single thread per set */ |
| static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) |
| { |
| if (!s || !attr) |
| return -EINVAL; |
| |
| if (s->members >= s->max_members) |
| return -ENOMEM; |
| |
| s->group.attrs[s->members] = attr; |
| s->members++; |
| |
| return 0; |
| } |
| |
| static int add_many_to_attr_set(struct attribute_set *s, |
| struct attribute **attr, |
| unsigned int count) |
| { |
| int i, res; |
| |
| for (i = 0; i < count; i++) { |
| res = add_to_attr_set(s, attr[i]); |
| if (res) |
| return res; |
| } |
| |
| return 0; |
| } |
| |
| static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) |
| { |
| sysfs_remove_group(kobj, &s->group); |
| destroy_attr_set(s); |
| } |
| |
| #define register_attr_set_with_sysfs(_attr_set, _kobj) \ |
| sysfs_create_group(_kobj, &_attr_set->group) |
| |
| static int parse_strtoul(const char *buf, |
| unsigned long max, unsigned long *value) |
| { |
| char *endp; |
| |
| while (*buf && isspace(*buf)) |
| buf++; |
| *value = simple_strtoul(buf, &endp, 0); |
| while (*endp && isspace(*endp)) |
| endp++; |
| if (*endp || *value > max) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static void tpacpi_disable_brightness_delay(void) |
| { |
| if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) |
| printk(TPACPI_NOTICE |
| "ACPI backlight control delay disabled\n"); |
| } |
| |
| static int __init tpacpi_query_bcl_levels(acpi_handle handle) |
| { |
| struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| union acpi_object *obj; |
| int rc; |
| |
| if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) { |
| obj = (union acpi_object *)buffer.pointer; |
| if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
| printk(TPACPI_ERR "Unknown _BCL data, " |
| "please report this to %s\n", TPACPI_MAIL); |
| rc = 0; |
| } else { |
| rc = obj->package.count; |
| } |
| } else { |
| return 0; |
| } |
| |
| kfree(buffer.pointer); |
| return rc; |
| } |
| |
| static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle, |
| u32 lvl, void *context, void **rv) |
| { |
| char name[ACPI_PATH_SEGMENT_LENGTH]; |
| struct acpi_buffer buffer = { sizeof(name), &name }; |
| |
| if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) && |
| !strncmp("_BCL", name, sizeof(name) - 1)) { |
| BUG_ON(!rv || !*rv); |
| **(int **)rv = tpacpi_query_bcl_levels(handle); |
| return AE_CTRL_TERMINATE; |
| } else { |
| return AE_OK; |
| } |
| } |
| |
| /* |
| * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map |
| */ |
| static int __init tpacpi_check_std_acpi_brightness_support(void) |
| { |
| int status; |
| int bcl_levels = 0; |
| void *bcl_ptr = &bcl_levels; |
| |
| if (!vid_handle) { |
| TPACPI_ACPIHANDLE_INIT(vid); |
| } |
| if (!vid_handle) |
| return 0; |
| |
| /* |
| * Search for a _BCL method, and execute it. This is safe on all |
| * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista |
| * BIOS in ACPI backlight control mode. We do NOT have to care |
| * about calling the _BCL method in an enabled video device, any |
| * will do for our purposes. |
| */ |
| |
| status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3, |
| tpacpi_acpi_walk_find_bcl, NULL, |
| &bcl_ptr); |
| |
| if (ACPI_SUCCESS(status) && bcl_levels > 2) { |
| tp_features.bright_acpimode = 1; |
| return (bcl_levels - 2); |
| } |
| |
| return 0; |
| } |
| |
| static int __init tpacpi_new_rfkill(const unsigned int id, |
| struct rfkill **rfk, |
| const enum rfkill_type rfktype, |
| const char *name, |
| int (*toggle_radio)(void *, enum rfkill_state), |
| int (*get_state)(void *, enum rfkill_state *)) |
| { |
| int res; |
| enum rfkill_state initial_state; |
| |
| *rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype); |
| if (!*rfk) { |
| printk(TPACPI_ERR |
| "failed to allocate memory for rfkill class\n"); |
| return -ENOMEM; |
| } |
| |
| (*rfk)->name = name; |
| (*rfk)->get_state = get_state; |
| (*rfk)->toggle_radio = toggle_radio; |
| |
| if (!get_state(NULL, &initial_state)) |
| (*rfk)->state = initial_state; |
| |
| res = rfkill_register(*rfk); |
| if (res < 0) { |
| printk(TPACPI_ERR |
| "failed to register %s rfkill switch: %d\n", |
| name, res); |
| rfkill_free(*rfk); |
| *rfk = NULL; |
| return res; |
| } |
| |
| return 0; |
| } |
| |
| /************************************************************************* |
| * thinkpad-acpi driver attributes |
| */ |
| |
| /* interface_version --------------------------------------------------- */ |
| static ssize_t tpacpi_driver_interface_version_show( |
| struct device_driver *drv, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); |
| } |
| |
| static DRIVER_ATTR(interface_version, S_IRUGO, |
| tpacpi_driver_interface_version_show, NULL); |
| |
| /* debug_level --------------------------------------------------------- */ |
| static ssize_t tpacpi_driver_debug_show(struct device_driver *drv, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); |
| } |
| |
| static ssize_t tpacpi_driver_debug_store(struct device_driver *drv, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| |
| if (parse_strtoul(buf, 0xffff, &t)) |
| return -EINVAL; |
| |
| dbg_level = t; |
| |
| return count; |
| } |
| |
| static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, |
| tpacpi_driver_debug_show, tpacpi_driver_debug_store); |
| |
| /* version ------------------------------------------------------------- */ |
| static ssize_t tpacpi_driver_version_show(struct device_driver *drv, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%s v%s\n", |
| TPACPI_DESC, TPACPI_VERSION); |
| } |
| |
| static DRIVER_ATTR(version, S_IRUGO, |
| tpacpi_driver_version_show, NULL); |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static struct driver_attribute *tpacpi_driver_attributes[] = { |
| &driver_attr_debug_level, &driver_attr_version, |
| &driver_attr_interface_version, |
| }; |
| |
| static int __init tpacpi_create_driver_attributes(struct device_driver *drv) |
| { |
| int i, res; |
| |
| i = 0; |
| res = 0; |
| while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { |
| res = driver_create_file(drv, tpacpi_driver_attributes[i]); |
| i++; |
| } |
| |
| return res; |
| } |
| |
| static void tpacpi_remove_driver_attributes(struct device_driver *drv) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) |
| driver_remove_file(drv, tpacpi_driver_attributes[i]); |
| } |
| |
| /**************************************************************************** |
| **************************************************************************** |
| * |
| * Subdrivers |
| * |
| **************************************************************************** |
| ****************************************************************************/ |
| |
| /************************************************************************* |
| * thinkpad-acpi init subdriver |
| */ |
| |
| static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm) |
| { |
| printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION); |
| printk(TPACPI_INFO "%s\n", TPACPI_URL); |
| |
| printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n", |
| (thinkpad_id.bios_version_str) ? |
| thinkpad_id.bios_version_str : "unknown", |
| (thinkpad_id.ec_version_str) ? |
| thinkpad_id.ec_version_str : "unknown"); |
| |
| if (thinkpad_id.vendor && thinkpad_id.model_str) |
| printk(TPACPI_INFO "%s %s, model %s\n", |
| (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? |
| "IBM" : ((thinkpad_id.vendor == |
| PCI_VENDOR_ID_LENOVO) ? |
| "Lenovo" : "Unknown vendor"), |
| thinkpad_id.model_str, |
| (thinkpad_id.nummodel_str) ? |
| thinkpad_id.nummodel_str : "unknown"); |
| |
| return 0; |
| } |
| |
| static int thinkpad_acpi_driver_read(char *p) |
| { |
| int len = 0; |
| |
| len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC); |
| len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION); |
| |
| return len; |
| } |
| |
| static struct ibm_struct thinkpad_acpi_driver_data = { |
| .name = "driver", |
| .read = thinkpad_acpi_driver_read, |
| }; |
| |
| /************************************************************************* |
| * Hotkey subdriver |
| */ |
| |
| enum { /* hot key scan codes (derived from ACPI DSDT) */ |
| TP_ACPI_HOTKEYSCAN_FNF1 = 0, |
| TP_ACPI_HOTKEYSCAN_FNF2, |
| TP_ACPI_HOTKEYSCAN_FNF3, |
| TP_ACPI_HOTKEYSCAN_FNF4, |
| TP_ACPI_HOTKEYSCAN_FNF5, |
| TP_ACPI_HOTKEYSCAN_FNF6, |
| TP_ACPI_HOTKEYSCAN_FNF7, |
| TP_ACPI_HOTKEYSCAN_FNF8, |
| TP_ACPI_HOTKEYSCAN_FNF9, |
| TP_ACPI_HOTKEYSCAN_FNF10, |
| TP_ACPI_HOTKEYSCAN_FNF11, |
| TP_ACPI_HOTKEYSCAN_FNF12, |
| TP_ACPI_HOTKEYSCAN_FNBACKSPACE, |
| TP_ACPI_HOTKEYSCAN_FNINSERT, |
| TP_ACPI_HOTKEYSCAN_FNDELETE, |
| TP_ACPI_HOTKEYSCAN_FNHOME, |
| TP_ACPI_HOTKEYSCAN_FNEND, |
| TP_ACPI_HOTKEYSCAN_FNPAGEUP, |
| TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, |
| TP_ACPI_HOTKEYSCAN_FNSPACE, |
| TP_ACPI_HOTKEYSCAN_VOLUMEUP, |
| TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, |
| TP_ACPI_HOTKEYSCAN_MUTE, |
| TP_ACPI_HOTKEYSCAN_THINKPAD, |
| }; |
| |
| enum { /* Keys available through NVRAM polling */ |
| TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, |
| TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, |
| }; |
| |
| enum { /* Positions of some of the keys in hotkey masks */ |
| TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, |
| TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, |
| TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, |
| TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, |
| TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, |
| TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, |
| TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, |
| TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, |
| TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, |
| TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, |
| TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, |
| }; |
| |
| enum { /* NVRAM to ACPI HKEY group map */ |
| TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | |
| TP_ACPI_HKEY_ZOOM_MASK | |
| TP_ACPI_HKEY_DISPSWTCH_MASK | |
| TP_ACPI_HKEY_HIBERNATE_MASK, |
| TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | |
| TP_ACPI_HKEY_BRGHTDWN_MASK, |
| TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | |
| TP_ACPI_HKEY_VOLDWN_MASK | |
| TP_ACPI_HKEY_MUTE_MASK, |
| }; |
| |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| struct tp_nvram_state { |
| u16 thinkpad_toggle:1; |
| u16 zoom_toggle:1; |
| u16 display_toggle:1; |
| u16 thinklight_toggle:1; |
| u16 hibernate_toggle:1; |
| u16 displayexp_toggle:1; |
| u16 display_state:1; |
| u16 brightness_toggle:1; |
| u16 volume_toggle:1; |
| u16 mute:1; |
| |
| u8 brightness_level; |
| u8 volume_level; |
| }; |
| |
| static struct task_struct *tpacpi_hotkey_task; |
| static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ |
| static int hotkey_poll_freq = 10; /* Hz */ |
| static struct mutex hotkey_thread_mutex; |
| static struct mutex hotkey_thread_data_mutex; |
| static unsigned int hotkey_config_change; |
| |
| #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| |
| #define hotkey_source_mask 0U |
| |
| #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| |
| static struct mutex hotkey_mutex; |
| |
| static enum { /* Reasons for waking up */ |
| TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ |
| TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ |
| TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ |
| } hotkey_wakeup_reason; |
| |
| static int hotkey_autosleep_ack; |
| |
| static int hotkey_orig_status; |
| static u32 hotkey_orig_mask; |
| static u32 hotkey_all_mask; |
| static u32 hotkey_reserved_mask; |
| static u32 hotkey_mask; |
| |
| static unsigned int hotkey_report_mode; |
| |
| static u16 *hotkey_keycode_map; |
| |
| static struct attribute_set *hotkey_dev_attributes; |
| |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| #define HOTKEY_CONFIG_CRITICAL_START \ |
| do { \ |
| mutex_lock(&hotkey_thread_data_mutex); \ |
| hotkey_config_change++; \ |
| } while (0); |
| #define HOTKEY_CONFIG_CRITICAL_END \ |
| mutex_unlock(&hotkey_thread_data_mutex); |
| #else |
| #define HOTKEY_CONFIG_CRITICAL_START |
| #define HOTKEY_CONFIG_CRITICAL_END |
| #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| |
| /* HKEY.MHKG() return bits */ |
| #define TP_HOTKEY_TABLET_MASK (1 << 3) |
| |
| static int hotkey_get_wlsw(int *status) |
| { |
| if (!acpi_evalf(hkey_handle, status, "WLSW", "d")) |
| return -EIO; |
| return 0; |
| } |
| |
| static int hotkey_get_tablet_mode(int *status) |
| { |
| int s; |
| |
| if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) |
| return -EIO; |
| |
| *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); |
| return 0; |
| } |
| |
| /* |
| * Call with hotkey_mutex held |
| */ |
| static int hotkey_mask_get(void) |
| { |
| u32 m = 0; |
| |
| if (tp_features.hotkey_mask) { |
| if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) |
| return -EIO; |
| } |
| hotkey_mask = m | (hotkey_source_mask & hotkey_mask); |
| |
| return 0; |
| } |
| |
| /* |
| * Call with hotkey_mutex held |
| */ |
| static int hotkey_mask_set(u32 mask) |
| { |
| int i; |
| int rc = 0; |
| |
| if (tp_features.hotkey_mask) { |
| if (!tp_warned.hotkey_mask_ff && |
| (mask == 0xffff || mask == 0xffffff || |
| mask == 0xffffffff)) { |
| tp_warned.hotkey_mask_ff = 1; |
| printk(TPACPI_NOTICE |
| "setting the hotkey mask to 0x%08x is likely " |
| "not the best way to go about it\n", mask); |
| printk(TPACPI_NOTICE |
| "please consider using the driver defaults, " |
| "and refer to up-to-date thinkpad-acpi " |
| "documentation\n"); |
| } |
| |
| HOTKEY_CONFIG_CRITICAL_START |
| for (i = 0; i < 32; i++) { |
| u32 m = 1 << i; |
| /* enable in firmware mask only keys not in NVRAM |
| * mode, but enable the key in the cached hotkey_mask |
| * regardless of mode, or the key will end up |
| * disabled by hotkey_mask_get() */ |
| if (!acpi_evalf(hkey_handle, |
| NULL, "MHKM", "vdd", i + 1, |
| !!((mask & ~hotkey_source_mask) & m))) { |
| rc = -EIO; |
| break; |
| } else { |
| hotkey_mask = (hotkey_mask & ~m) | (mask & m); |
| } |
| } |
| HOTKEY_CONFIG_CRITICAL_END |
| |
| /* hotkey_mask_get must be called unconditionally below */ |
| if (!hotkey_mask_get() && !rc && |
| (hotkey_mask & ~hotkey_source_mask) != |
| (mask & ~hotkey_source_mask)) { |
| printk(TPACPI_NOTICE |
| "requested hot key mask 0x%08x, but " |
| "firmware forced it to 0x%08x\n", |
| mask, hotkey_mask); |
| } |
| } else { |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| HOTKEY_CONFIG_CRITICAL_START |
| hotkey_mask = mask & hotkey_source_mask; |
| HOTKEY_CONFIG_CRITICAL_END |
| hotkey_mask_get(); |
| if (hotkey_mask != mask) { |
| printk(TPACPI_NOTICE |
| "requested hot key mask 0x%08x, " |
| "forced to 0x%08x (NVRAM poll mask is " |
| "0x%08x): no firmware mask support\n", |
| mask, hotkey_mask, hotkey_source_mask); |
| } |
| #else |
| hotkey_mask_get(); |
| rc = -ENXIO; |
| #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| } |
| |
| return rc; |
| } |
| |
| static int hotkey_status_get(int *status) |
| { |
| if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| static int hotkey_status_set(int status) |
| { |
| if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status)) |
| return -EIO; |
| |
| return 0; |
| } |
| |
| static void tpacpi_input_send_tabletsw(void) |
| { |
| int state; |
| |
| if (tp_features.hotkey_tablet && |
| !hotkey_get_tablet_mode(&state)) { |
| mutex_lock(&tpacpi_inputdev_send_mutex); |
| |
| input_report_switch(tpacpi_inputdev, |
| SW_TABLET_MODE, !!state); |
| input_sync(tpacpi_inputdev); |
| |
| mutex_unlock(&tpacpi_inputdev_send_mutex); |
| } |
| } |
| |
| static void tpacpi_input_send_key(unsigned int scancode) |
| { |
| unsigned int keycode; |
| |
| keycode = hotkey_keycode_map[scancode]; |
| |
| if (keycode != KEY_RESERVED) { |
| mutex_lock(&tpacpi_inputdev_send_mutex); |
| |
| input_report_key(tpacpi_inputdev, keycode, 1); |
| if (keycode == KEY_UNKNOWN) |
| input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, |
| scancode); |
| input_sync(tpacpi_inputdev); |
| |
| input_report_key(tpacpi_inputdev, keycode, 0); |
| if (keycode == KEY_UNKNOWN) |
| input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, |
| scancode); |
| input_sync(tpacpi_inputdev); |
| |
| mutex_unlock(&tpacpi_inputdev_send_mutex); |
| } |
| } |
| |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; |
| |
| static void tpacpi_hotkey_send_key(unsigned int scancode) |
| { |
| tpacpi_input_send_key(scancode); |
| if (hotkey_report_mode < 2) { |
| acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device, |
| 0x80, 0x1001 + scancode); |
| } |
| } |
| |
| static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m) |
| { |
| u8 d; |
| |
| if (m & TP_NVRAM_HKEY_GROUP_HK2) { |
| d = nvram_read_byte(TP_NVRAM_ADDR_HK2); |
| n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); |
| n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); |
| n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); |
| n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); |
| } |
| if (m & TP_ACPI_HKEY_THNKLGHT_MASK) { |
| d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); |
| n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); |
| } |
| if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { |
| d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); |
| n->displayexp_toggle = |
| !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); |
| } |
| if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { |
| d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); |
| n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) |
| >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; |
| n->brightness_toggle = |
| !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); |
| } |
| if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { |
| d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); |
| n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) |
| >> TP_NVRAM_POS_LEVEL_VOLUME; |
| n->mute = !!(d & TP_NVRAM_MASK_MUTE); |
| n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); |
| } |
| } |
| |
| #define TPACPI_COMPARE_KEY(__scancode, __member) \ |
| do { \ |
| if ((mask & (1 << __scancode)) && \ |
| oldn->__member != newn->__member) \ |
| tpacpi_hotkey_send_key(__scancode); \ |
| } while (0) |
| |
| #define TPACPI_MAY_SEND_KEY(__scancode) \ |
| do { if (mask & (1 << __scancode)) \ |
| tpacpi_hotkey_send_key(__scancode); } while (0) |
| |
| static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, |
| struct tp_nvram_state *newn, |
| u32 mask) |
| { |
| TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); |
| TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); |
| TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); |
| TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); |
| |
| TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); |
| |
| TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); |
| |
| /* handle volume */ |
| if (oldn->volume_toggle != newn->volume_toggle) { |
| if (oldn->mute != newn->mute) { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); |
| } |
| if (oldn->volume_level > newn->volume_level) { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); |
| } else if (oldn->volume_level < newn->volume_level) { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); |
| } else if (oldn->mute == newn->mute) { |
| /* repeated key presses that didn't change state */ |
| if (newn->mute) { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); |
| } else if (newn->volume_level != 0) { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); |
| } else { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); |
| } |
| } |
| } |
| |
| /* handle brightness */ |
| if (oldn->brightness_toggle != newn->brightness_toggle) { |
| if (oldn->brightness_level < newn->brightness_level) { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); |
| } else if (oldn->brightness_level > newn->brightness_level) { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); |
| } else { |
| /* repeated key presses that didn't change state */ |
| if (newn->brightness_level != 0) { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); |
| } else { |
| TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); |
| } |
| } |
| } |
| } |
| |
| #undef TPACPI_COMPARE_KEY |
| #undef TPACPI_MAY_SEND_KEY |
| |
| static int hotkey_kthread(void *data) |
| { |
| struct tp_nvram_state s[2]; |
| u32 mask; |
| unsigned int si, so; |
| unsigned long t; |
| unsigned int change_detector, must_reset; |
| |
| mutex_lock(&hotkey_thread_mutex); |
| |
| if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) |
| goto exit; |
| |
| set_freezable(); |
| |
| so = 0; |
| si = 1; |
| t = 0; |
| |
| /* Initial state for compares */ |
| mutex_lock(&hotkey_thread_data_mutex); |
| change_detector = hotkey_config_change; |
| mask = hotkey_source_mask & hotkey_mask; |
| mutex_unlock(&hotkey_thread_data_mutex); |
| hotkey_read_nvram(&s[so], mask); |
| |
| while (!kthread_should_stop() && hotkey_poll_freq) { |
| if (t == 0) |
| t = 1000/hotkey_poll_freq; |
| t = msleep_interruptible(t); |
| if (unlikely(kthread_should_stop())) |
| break; |
| must_reset = try_to_freeze(); |
| if (t > 0 && !must_reset) |
| continue; |
| |
| mutex_lock(&hotkey_thread_data_mutex); |
| if (must_reset || hotkey_config_change != change_detector) { |
| /* forget old state on thaw or config change */ |
| si = so; |
| t = 0; |
| change_detector = hotkey_config_change; |
| } |
| mask = hotkey_source_mask & hotkey_mask; |
| mutex_unlock(&hotkey_thread_data_mutex); |
| |
| if (likely(mask)) { |
| hotkey_read_nvram(&s[si], mask); |
| if (likely(si != so)) { |
| hotkey_compare_and_issue_event(&s[so], &s[si], |
| mask); |
| } |
| } |
| |
| so = si; |
| si ^= 1; |
| } |
| |
| exit: |
| mutex_unlock(&hotkey_thread_mutex); |
| return 0; |
| } |
| |
| static void hotkey_poll_stop_sync(void) |
| { |
| if (tpacpi_hotkey_task) { |
| if (frozen(tpacpi_hotkey_task) || |
| freezing(tpacpi_hotkey_task)) |
| thaw_process(tpacpi_hotkey_task); |
| |
| kthread_stop(tpacpi_hotkey_task); |
| tpacpi_hotkey_task = NULL; |
| mutex_lock(&hotkey_thread_mutex); |
| /* at this point, the thread did exit */ |
| mutex_unlock(&hotkey_thread_mutex); |
| } |
| } |
| |
| /* call with hotkey_mutex held */ |
| static void hotkey_poll_setup(int may_warn) |
| { |
| if ((hotkey_source_mask & hotkey_mask) != 0 && |
| hotkey_poll_freq > 0 && |
| (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) { |
| if (!tpacpi_hotkey_task) { |
| tpacpi_hotkey_task = kthread_run(hotkey_kthread, |
| NULL, TPACPI_NVRAM_KTHREAD_NAME); |
| if (IS_ERR(tpacpi_hotkey_task)) { |
| tpacpi_hotkey_task = NULL; |
| printk(TPACPI_ERR |
| "could not create kernel thread " |
| "for hotkey polling\n"); |
| } |
| } |
| } else { |
| hotkey_poll_stop_sync(); |
| if (may_warn && |
| hotkey_source_mask != 0 && hotkey_poll_freq == 0) { |
| printk(TPACPI_NOTICE |
| "hot keys 0x%08x require polling, " |
| "which is currently disabled\n", |
| hotkey_source_mask); |
| } |
| } |
| } |
| |
| static void hotkey_poll_setup_safe(int may_warn) |
| { |
| mutex_lock(&hotkey_mutex); |
| hotkey_poll_setup(may_warn); |
| mutex_unlock(&hotkey_mutex); |
| } |
| |
| #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| |
| static void hotkey_poll_setup_safe(int __unused) |
| { |
| } |
| |
| #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| |
| static int hotkey_inputdev_open(struct input_dev *dev) |
| { |
| switch (tpacpi_lifecycle) { |
| case TPACPI_LIFE_INIT: |
| /* |
| * hotkey_init will call hotkey_poll_setup_safe |
| * at the appropriate moment |
| */ |
| return 0; |
| case TPACPI_LIFE_EXITING: |
| return -EBUSY; |
| case TPACPI_LIFE_RUNNING: |
| hotkey_poll_setup_safe(0); |
| return 0; |
| } |
| |
| /* Should only happen if tpacpi_lifecycle is corrupt */ |
| BUG(); |
| return -EBUSY; |
| } |
| |
| static void hotkey_inputdev_close(struct input_dev *dev) |
| { |
| /* disable hotkey polling when possible */ |
| if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING) |
| hotkey_poll_setup_safe(0); |
| } |
| |
| /* sysfs hotkey enable ------------------------------------------------- */ |
| static ssize_t hotkey_enable_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res, status; |
| |
| res = hotkey_status_get(&status); |
| if (res) |
| return res; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", status); |
| } |
| |
| static ssize_t hotkey_enable_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| int res; |
| |
| if (parse_strtoul(buf, 1, &t)) |
| return -EINVAL; |
| |
| res = hotkey_status_set(t); |
| |
| return (res) ? res : count; |
| } |
| |
| static struct device_attribute dev_attr_hotkey_enable = |
| __ATTR(hotkey_enable, S_IWUSR | S_IRUGO, |
| hotkey_enable_show, hotkey_enable_store); |
| |
| /* sysfs hotkey mask --------------------------------------------------- */ |
| static ssize_t hotkey_mask_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res; |
| |
| if (mutex_lock_interruptible(&hotkey_mutex)) |
| return -ERESTARTSYS; |
| res = hotkey_mask_get(); |
| mutex_unlock(&hotkey_mutex); |
| |
| return (res)? |
| res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask); |
| } |
| |
| static ssize_t hotkey_mask_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| int res; |
| |
| if (parse_strtoul(buf, 0xffffffffUL, &t)) |
| return -EINVAL; |
| |
| if (mutex_lock_interruptible(&hotkey_mutex)) |
| return -ERESTARTSYS; |
| |
| res = hotkey_mask_set(t); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| hotkey_poll_setup(1); |
| #endif |
| |
| mutex_unlock(&hotkey_mutex); |
| |
| return (res) ? res : count; |
| } |
| |
| static struct device_attribute dev_attr_hotkey_mask = |
| __ATTR(hotkey_mask, S_IWUSR | S_IRUGO, |
| hotkey_mask_show, hotkey_mask_store); |
| |
| /* sysfs hotkey bios_enabled ------------------------------------------- */ |
| static ssize_t hotkey_bios_enabled_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status); |
| } |
| |
| static struct device_attribute dev_attr_hotkey_bios_enabled = |
| __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL); |
| |
| /* sysfs hotkey bios_mask ---------------------------------------------- */ |
| static ssize_t hotkey_bios_mask_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); |
| } |
| |
| static struct device_attribute dev_attr_hotkey_bios_mask = |
| __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL); |
| |
| /* sysfs hotkey all_mask ----------------------------------------------- */ |
| static ssize_t hotkey_all_mask_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "0x%08x\n", |
| hotkey_all_mask | hotkey_source_mask); |
| } |
| |
| static struct device_attribute dev_attr_hotkey_all_mask = |
| __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL); |
| |
| /* sysfs hotkey recommended_mask --------------------------------------- */ |
| static ssize_t hotkey_recommended_mask_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "0x%08x\n", |
| (hotkey_all_mask | hotkey_source_mask) |
| & ~hotkey_reserved_mask); |
| } |
| |
| static struct device_attribute dev_attr_hotkey_recommended_mask = |
| __ATTR(hotkey_recommended_mask, S_IRUGO, |
| hotkey_recommended_mask_show, NULL); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| |
| /* sysfs hotkey hotkey_source_mask ------------------------------------- */ |
| static ssize_t hotkey_source_mask_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); |
| } |
| |
| static ssize_t hotkey_source_mask_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| |
| if (parse_strtoul(buf, 0xffffffffUL, &t) || |
| ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) |
| return -EINVAL; |
| |
| if (mutex_lock_interruptible(&hotkey_mutex)) |
| return -ERESTARTSYS; |
| |
| HOTKEY_CONFIG_CRITICAL_START |
| hotkey_source_mask = t; |
| HOTKEY_CONFIG_CRITICAL_END |
| |
| hotkey_poll_setup(1); |
| |
| mutex_unlock(&hotkey_mutex); |
| |
| return count; |
| } |
| |
| static struct device_attribute dev_attr_hotkey_source_mask = |
| __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO, |
| hotkey_source_mask_show, hotkey_source_mask_store); |
| |
| /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ |
| static ssize_t hotkey_poll_freq_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); |
| } |
| |
| static ssize_t hotkey_poll_freq_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| |
| if (parse_strtoul(buf, 25, &t)) |
| return -EINVAL; |
| |
| if (mutex_lock_interruptible(&hotkey_mutex)) |
| return -ERESTARTSYS; |
| |
| hotkey_poll_freq = t; |
| |
| hotkey_poll_setup(1); |
| mutex_unlock(&hotkey_mutex); |
| |
| return count; |
| } |
| |
| static struct device_attribute dev_attr_hotkey_poll_freq = |
| __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO, |
| hotkey_poll_freq_show, hotkey_poll_freq_store); |
| |
| #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| |
| /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ |
| static ssize_t hotkey_radio_sw_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res, s; |
| res = hotkey_get_wlsw(&s); |
| if (res < 0) |
| return res; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", !!s); |
| } |
| |
| static struct device_attribute dev_attr_hotkey_radio_sw = |
| __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL); |
| |
| static void hotkey_radio_sw_notify_change(void) |
| { |
| if (tp_features.hotkey_wlsw) |
| sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, |
| "hotkey_radio_sw"); |
| } |
| |
| /* sysfs hotkey tablet mode (pollable) --------------------------------- */ |
| static ssize_t hotkey_tablet_mode_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res, s; |
| res = hotkey_get_tablet_mode(&s); |
| if (res < 0) |
| return res; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", !!s); |
| } |
| |
| static struct device_attribute dev_attr_hotkey_tablet_mode = |
| __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL); |
| |
| static void hotkey_tablet_mode_notify_change(void) |
| { |
| if (tp_features.hotkey_tablet) |
| sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, |
| "hotkey_tablet_mode"); |
| } |
| |
| /* sysfs hotkey report_mode -------------------------------------------- */ |
| static ssize_t hotkey_report_mode_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", |
| (hotkey_report_mode != 0) ? hotkey_report_mode : 1); |
| } |
| |
| static struct device_attribute dev_attr_hotkey_report_mode = |
| __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL); |
| |
| /* sysfs wakeup reason (pollable) -------------------------------------- */ |
| static ssize_t hotkey_wakeup_reason_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); |
| } |
| |
| static struct device_attribute dev_attr_hotkey_wakeup_reason = |
| __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); |
| |
| static void hotkey_wakeup_reason_notify_change(void) |
| { |
| if (tp_features.hotkey_mask) |
| sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, |
| "wakeup_reason"); |
| } |
| |
| /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ |
| static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); |
| } |
| |
| static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete = |
| __ATTR(wakeup_hotunplug_complete, S_IRUGO, |
| hotkey_wakeup_hotunplug_complete_show, NULL); |
| |
| static void hotkey_wakeup_hotunplug_complete_notify_change(void) |
| { |
| if (tp_features.hotkey_mask) |
| sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, |
| "wakeup_hotunplug_complete"); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static struct attribute *hotkey_attributes[] __initdata = { |
| &dev_attr_hotkey_enable.attr, |
| &dev_attr_hotkey_bios_enabled.attr, |
| &dev_attr_hotkey_report_mode.attr, |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| &dev_attr_hotkey_mask.attr, |
| &dev_attr_hotkey_all_mask.attr, |
| &dev_attr_hotkey_recommended_mask.attr, |
| &dev_attr_hotkey_source_mask.attr, |
| &dev_attr_hotkey_poll_freq.attr, |
| #endif |
| }; |
| |
| static struct attribute *hotkey_mask_attributes[] __initdata = { |
| &dev_attr_hotkey_bios_mask.attr, |
| #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| &dev_attr_hotkey_mask.attr, |
| &dev_attr_hotkey_all_mask.attr, |
| &dev_attr_hotkey_recommended_mask.attr, |
| #endif |
| &dev_attr_hotkey_wakeup_reason.attr, |
| &dev_attr_hotkey_wakeup_hotunplug_complete.attr, |
| }; |
| |
| static void bluetooth_update_rfk(void); |
| static void wan_update_rfk(void); |
| static void tpacpi_send_radiosw_update(void) |
| { |
| int wlsw; |
| |
| /* Sync these BEFORE sending any rfkill events */ |
| if (tp_features.bluetooth) |
| bluetooth_update_rfk(); |
| if (tp_features.wan) |
| wan_update_rfk(); |
| |
| if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) { |
| mutex_lock(&tpacpi_inputdev_send_mutex); |
| |
| input_report_switch(tpacpi_inputdev, |
| SW_RFKILL_ALL, !!wlsw); |
| input_sync(tpacpi_inputdev); |
| |
| mutex_unlock(&tpacpi_inputdev_send_mutex); |
| } |
| hotkey_radio_sw_notify_change(); |
| } |
| |
| static void hotkey_exit(void) |
| { |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| hotkey_poll_stop_sync(); |
| #endif |
| |
| if (hotkey_dev_attributes) |
| delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); |
| |
| kfree(hotkey_keycode_map); |
| |
| if (tp_features.hotkey) { |
| dbg_printk(TPACPI_DBG_EXIT, |
| "restoring original hot key mask\n"); |
| /* no short-circuit boolean operator below! */ |
| if ((hotkey_mask_set(hotkey_orig_mask) | |
| hotkey_status_set(hotkey_orig_status)) != 0) |
| printk(TPACPI_ERR |
| "failed to restore hot key mask " |
| "to BIOS defaults\n"); |
| } |
| } |
| |
| static int __init hotkey_init(struct ibm_init_struct *iibm) |
| { |
| /* Requirements for changing the default keymaps: |
| * |
| * 1. Many of the keys are mapped to KEY_RESERVED for very |
| * good reasons. Do not change them unless you have deep |
| * knowledge on the IBM and Lenovo ThinkPad firmware for |
| * the various ThinkPad models. The driver behaves |
| * differently for KEY_RESERVED: such keys have their |
| * hot key mask *unset* in mask_recommended, and also |
| * in the initial hot key mask programmed into the |
| * firmware at driver load time, which means the firm- |
| * ware may react very differently if you change them to |
| * something else; |
| * |
| * 2. You must be subscribed to the linux-thinkpad and |
| * ibm-acpi-devel mailing lists, and you should read the |
| * list archives since 2007 if you want to change the |
| * keymaps. This requirement exists so that you will |
| * know the past history of problems with the thinkpad- |
| * acpi driver keymaps, and also that you will be |
| * listening to any bug reports; |
| * |
| * 3. Do not send thinkpad-acpi specific patches directly to |
| * for merging, *ever*. Send them to the linux-acpi |
| * mailinglist for comments. Merging is to be done only |
| * through acpi-test and the ACPI maintainer. |
| * |
| * If the above is too much to ask, don't change the keymap. |
| * Ask the thinkpad-acpi maintainer to do it, instead. |
| */ |
| static u16 ibm_keycode_map[] __initdata = { |
| /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ |
| KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP, |
| KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, |
| KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, |
| |
| /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ |
| KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ |
| KEY_UNKNOWN, /* 0x0D: FN+INSERT */ |
| KEY_UNKNOWN, /* 0x0E: FN+DELETE */ |
| |
| /* brightness: firmware always reacts to them, unless |
| * X.org did some tricks in the radeon BIOS scratch |
| * registers of *some* models */ |
| KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ |
| KEY_RESERVED, /* 0x10: FN+END (brightness down) */ |
| |
| /* Thinklight: firmware always react to it */ |
| KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ |
| |
| KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ |
| KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ |
| |
| /* Volume: firmware always react to it and reprograms |
| * the built-in *extra* mixer. Never map it to control |
| * another mixer by default. */ |
| KEY_RESERVED, /* 0x14: VOLUME UP */ |
| KEY_RESERVED, /* 0x15: VOLUME DOWN */ |
| KEY_RESERVED, /* 0x16: MUTE */ |
| |
| KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ |
| |
| /* (assignments unknown, please report if found) */ |
| KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| }; |
| static u16 lenovo_keycode_map[] __initdata = { |
| /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ |
| KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, |
| KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, |
| KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, |
| |
| /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ |
| KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ |
| KEY_UNKNOWN, /* 0x0D: FN+INSERT */ |
| KEY_UNKNOWN, /* 0x0E: FN+DELETE */ |
| |
| /* These either have to go through ACPI video, or |
| * act like in the IBM ThinkPads, so don't ever |
| * enable them by default */ |
| KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ |
| KEY_RESERVED, /* 0x10: FN+END (brightness down) */ |
| |
| KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ |
| |
| KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ |
| KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ |
| |
| /* Volume: z60/z61, T60 (BIOS version?): firmware always |
| * react to it and reprograms the built-in *extra* mixer. |
| * Never map it to control another mixer by default. |
| * |
| * T60?, T61, R60?, R61: firmware and EC tries to send |
| * these over the regular keyboard, so these are no-ops, |
| * but there are still weird bugs re. MUTE, so do not |
| * change unless you get test reports from all Lenovo |
| * models. May cause the BIOS to interfere with the |
| * HDA mixer. |
| */ |
| KEY_RESERVED, /* 0x14: VOLUME UP */ |
| KEY_RESERVED, /* 0x15: VOLUME DOWN */ |
| KEY_RESERVED, /* 0x16: MUTE */ |
| |
| KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ |
| |
| /* (assignments unknown, please report if found) */ |
| KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| }; |
| |
| #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map) |
| #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map) |
| #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0]) |
| |
| int res, i; |
| int status; |
| int hkeyv; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n"); |
| |
| BUG_ON(!tpacpi_inputdev); |
| BUG_ON(tpacpi_inputdev->open != NULL || |
| tpacpi_inputdev->close != NULL); |
| |
| TPACPI_ACPIHANDLE_INIT(hkey); |
| mutex_init(&hotkey_mutex); |
| |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| mutex_init(&hotkey_thread_mutex); |
| mutex_init(&hotkey_thread_data_mutex); |
| #endif |
| |
| /* hotkey not supported on 570 */ |
| tp_features.hotkey = hkey_handle != NULL; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n", |
| str_supported(tp_features.hotkey)); |
| |
| if (!tp_features.hotkey) |
| return 1; |
| |
| tpacpi_disable_brightness_delay(); |
| |
| hotkey_dev_attributes = create_attr_set(13, NULL); |
| if (!hotkey_dev_attributes) |
| return -ENOMEM; |
| res = add_many_to_attr_set(hotkey_dev_attributes, |
| hotkey_attributes, |
| ARRAY_SIZE(hotkey_attributes)); |
| if (res) |
| goto err_exit; |
| |
| /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
| A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking |
| for HKEY interface version 0x100 */ |
| if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { |
| if ((hkeyv >> 8) != 1) { |
| printk(TPACPI_ERR "unknown version of the " |
| "HKEY interface: 0x%x\n", hkeyv); |
| printk(TPACPI_ERR "please report this to %s\n", |
| TPACPI_MAIL); |
| } else { |
| /* |
| * MHKV 0x100 in A31, R40, R40e, |
| * T4x, X31, and later |
| */ |
| tp_features.hotkey_mask = 1; |
| } |
| } |
| |
| vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n", |
| str_supported(tp_features.hotkey_mask)); |
| |
| if (tp_features.hotkey_mask) { |
| if (!acpi_evalf(hkey_handle, &hotkey_all_mask, |
| "MHKA", "qd")) { |
| printk(TPACPI_ERR |
| "missing MHKA handler, " |
| "please report this to %s\n", |
| TPACPI_MAIL); |
| /* FN+F12, FN+F4, FN+F3 */ |
| hotkey_all_mask = 0x080cU; |
| } |
| } |
| |
| /* hotkey_source_mask *must* be zero for |
| * the first hotkey_mask_get */ |
| res = hotkey_status_get(&hotkey_orig_status); |
| if (res) |
| goto err_exit; |
| |
| if (tp_features.hotkey_mask) { |
| res = hotkey_mask_get(); |
| if (res) |
| goto err_exit; |
| |
| hotkey_orig_mask = hotkey_mask; |
| res = add_many_to_attr_set( |
| hotkey_dev_attributes, |
| hotkey_mask_attributes, |
| ARRAY_SIZE(hotkey_mask_attributes)); |
| if (res) |
| goto err_exit; |
| } |
| |
| #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| if (tp_features.hotkey_mask) { |
| hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK |
| & ~hotkey_all_mask; |
| } else { |
| hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK; |
| } |
| |
| vdbg_printk(TPACPI_DBG_INIT, |
| "hotkey source mask 0x%08x, polling freq %d\n", |
| hotkey_source_mask, hotkey_poll_freq); |
| #endif |
| |
| /* Not all thinkpads have a hardware radio switch */ |
| if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { |
| tp_features.hotkey_wlsw = 1; |
| printk(TPACPI_INFO |
| "radio switch found; radios are %s\n", |
| enabled(status, 0)); |
| } |
| if (tp_features.hotkey_wlsw) |
| res = add_to_attr_set(hotkey_dev_attributes, |
| &dev_attr_hotkey_radio_sw.attr); |
| |
| /* For X41t, X60t, X61t Tablets... */ |
| if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) { |
| tp_features.hotkey_tablet = 1; |
| printk(TPACPI_INFO |
| "possible tablet mode switch found; " |
| "ThinkPad in %s mode\n", |
| (status & TP_HOTKEY_TABLET_MASK)? |
| "tablet" : "laptop"); |
| res = add_to_attr_set(hotkey_dev_attributes, |
| &dev_attr_hotkey_tablet_mode.attr); |
| } |
| |
| if (!res) |
| res = register_attr_set_with_sysfs( |
| hotkey_dev_attributes, |
| &tpacpi_pdev->dev.kobj); |
| if (res) |
| goto err_exit; |
| |
| /* Set up key map */ |
| |
| hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE, |
| GFP_KERNEL); |
| if (!hotkey_keycode_map) { |
| printk(TPACPI_ERR |
| "failed to allocate memory for key map\n"); |
| res = -ENOMEM; |
| goto err_exit; |
| } |
| |
| if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) { |
| dbg_printk(TPACPI_DBG_INIT, |
| "using Lenovo default hot key map\n"); |
| memcpy(hotkey_keycode_map, &lenovo_keycode_map, |
| TPACPI_HOTKEY_MAP_SIZE); |
| } else { |
| dbg_printk(TPACPI_DBG_INIT, |
| "using IBM default hot key map\n"); |
| memcpy(hotkey_keycode_map, &ibm_keycode_map, |
| TPACPI_HOTKEY_MAP_SIZE); |
| } |
| |
| set_bit(EV_KEY, tpacpi_inputdev->evbit); |
| set_bit(EV_MSC, tpacpi_inputdev->evbit); |
| set_bit(MSC_SCAN, tpacpi_inputdev->mscbit); |
| tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; |
| tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; |
| tpacpi_inputdev->keycode = hotkey_keycode_map; |
| for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { |
| if (hotkey_keycode_map[i] != KEY_RESERVED) { |
| set_bit(hotkey_keycode_map[i], |
| tpacpi_inputdev->keybit); |
| } else { |
| if (i < sizeof(hotkey_reserved_mask)*8) |
| hotkey_reserved_mask |= 1 << i; |
| } |
| } |
| |
| if (tp_features.hotkey_wlsw) { |
| set_bit(EV_SW, tpacpi_inputdev->evbit); |
| set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit); |
| } |
| if (tp_features.hotkey_tablet) { |
| set_bit(EV_SW, tpacpi_inputdev->evbit); |
| set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit); |
| } |
| |
| /* Do not issue duplicate brightness change events to |
| * userspace */ |
| if (!tp_features.bright_acpimode) |
| /* update bright_acpimode... */ |
| tpacpi_check_std_acpi_brightness_support(); |
| |
| if (tp_features.bright_acpimode) { |
| printk(TPACPI_INFO |
| "This ThinkPad has standard ACPI backlight " |
| "brightness control, supported by the ACPI " |
| "video driver\n"); |
| printk(TPACPI_NOTICE |
| "Disabling thinkpad-acpi brightness events " |
| "by default...\n"); |
| |
| /* The hotkey_reserved_mask change below is not |
| * necessary while the keys are at KEY_RESERVED in the |
| * default map, but better safe than sorry, leave it |
| * here as a marker of what we have to do, especially |
| * when we finally become able to set this at runtime |
| * on response to X.org requests */ |
| hotkey_reserved_mask |= |
| (1 << TP_ACPI_HOTKEYSCAN_FNHOME) |
| | (1 << TP_ACPI_HOTKEYSCAN_FNEND); |
| } |
| |
| dbg_printk(TPACPI_DBG_INIT, "enabling hot key handling\n"); |
| res = hotkey_status_set(1); |
| if (res) { |
| hotkey_exit(); |
| return res; |
| } |
| res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask) |
| & ~hotkey_reserved_mask) |
| | hotkey_orig_mask); |
| if (res < 0 && res != -ENXIO) { |
| hotkey_exit(); |
| return res; |
| } |
| |
| dbg_printk(TPACPI_DBG_INIT, |
| "legacy hot key reporting over procfs %s\n", |
| (hotkey_report_mode < 2) ? |
| "enabled" : "disabled"); |
| |
| tpacpi_inputdev->open = &hotkey_inputdev_open; |
| tpacpi_inputdev->close = &hotkey_inputdev_close; |
| |
| hotkey_poll_setup_safe(1); |
| tpacpi_send_radiosw_update(); |
| tpacpi_input_send_tabletsw(); |
| |
| return 0; |
| |
| err_exit: |
| delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); |
| hotkey_dev_attributes = NULL; |
| |
| return (res < 0)? res : 1; |
| } |
| |
| static void hotkey_notify(struct ibm_struct *ibm, u32 event) |
| { |
| u32 hkey; |
| unsigned int scancode; |
| int send_acpi_ev; |
| int ignore_acpi_ev; |
| int unk_ev; |
| |
| if (event != 0x80) { |
| printk(TPACPI_ERR |
| "unknown HKEY notification event %d\n", event); |
| /* forward it to userspace, maybe it knows how to handle it */ |
| acpi_bus_generate_netlink_event( |
| ibm->acpi->device->pnp.device_class, |
| ibm->acpi->device->dev.bus_id, |
| event, 0); |
| return; |
| } |
| |
| while (1) { |
| if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { |
| printk(TPACPI_ERR "failed to retrieve HKEY event\n"); |
| return; |
| } |
| |
| if (hkey == 0) { |
| /* queue empty */ |
| return; |
| } |
| |
| send_acpi_ev = 1; |
| ignore_acpi_ev = 0; |
| unk_ev = 0; |
| |
| switch (hkey >> 12) { |
| case 1: |
| /* 0x1000-0x1FFF: key presses */ |
| scancode = hkey & 0xfff; |
| if (scancode > 0 && scancode < 0x21) { |
| scancode--; |
| if (!(hotkey_source_mask & (1 << scancode))) { |
| tpacpi_input_send_key(scancode); |
| send_acpi_ev = 0; |
| } else { |
| ignore_acpi_ev = 1; |
| } |
| } else { |
| unk_ev = 1; |
| } |
| break; |
| case 2: |
| /* Wakeup reason */ |
| switch (hkey) { |
| case 0x2304: /* suspend, undock */ |
| case 0x2404: /* hibernation, undock */ |
| hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; |
| ignore_acpi_ev = 1; |
| break; |
| case 0x2305: /* suspend, bay eject */ |
| case 0x2405: /* hibernation, bay eject */ |
| hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; |
| ignore_acpi_ev = 1; |
| break; |
| default: |
| unk_ev = 1; |
| } |
| if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { |
| printk(TPACPI_INFO |
| "woke up due to a hot-unplug " |
| "request...\n"); |
| hotkey_wakeup_reason_notify_change(); |
| } |
| break; |
| case 3: |
| /* bay-related wakeups */ |
| if (hkey == 0x3003) { |
| hotkey_autosleep_ack = 1; |
| printk(TPACPI_INFO |
| "bay ejected\n"); |
| hotkey_wakeup_hotunplug_complete_notify_change(); |
| } else { |
| unk_ev = 1; |
| } |
| break; |
| case 4: |
| /* dock-related wakeups */ |
| if (hkey == 0x4003) { |
| hotkey_autosleep_ack = 1; |
| printk(TPACPI_INFO |
| "undocked\n"); |
| hotkey_wakeup_hotunplug_complete_notify_change(); |
| } else { |
| unk_ev = 1; |
| } |
| break; |
| case 5: |
| /* 0x5000-0x5FFF: human interface helpers */ |
| switch (hkey) { |
| case 0x5010: /* Lenovo new BIOS: brightness changed */ |
| case 0x500b: /* X61t: tablet pen inserted into bay */ |
| case 0x500c: /* X61t: tablet pen removed from bay */ |
| break; |
| case 0x5009: /* X41t-X61t: swivel up (tablet mode) */ |
| case 0x500a: /* X41t-X61t: swivel down (normal mode) */ |
| tpacpi_input_send_tabletsw(); |
| hotkey_tablet_mode_notify_change(); |
| send_acpi_ev = 0; |
| break; |
| case 0x5001: |
| case 0x5002: |
| /* LID switch events. Do not propagate */ |
| ignore_acpi_ev = 1; |
| break; |
| default: |
| unk_ev = 1; |
| } |
| break; |
| case 7: |
| /* 0x7000-0x7FFF: misc */ |
| if (tp_features.hotkey_wlsw && hkey == 0x7000) { |
| tpacpi_send_radiosw_update(); |
| send_acpi_ev = 0; |
| break; |
| } |
| /* fallthrough to default */ |
| default: |
| unk_ev = 1; |
| } |
| if (unk_ev) { |
| printk(TPACPI_NOTICE |
| "unhandled HKEY event 0x%04x\n", hkey); |
| } |
| |
| /* Legacy events */ |
| if (!ignore_acpi_ev && |
| (send_acpi_ev || hotkey_report_mode < 2)) { |
| acpi_bus_generate_proc_event(ibm->acpi->device, |
| event, hkey); |
| } |
| |
| /* netlink events */ |
| if (!ignore_acpi_ev && send_acpi_ev) { |
| acpi_bus_generate_netlink_event( |
| ibm->acpi->device->pnp.device_class, |
| ibm->acpi->device->dev.bus_id, |
| event, hkey); |
| } |
| } |
| } |
| |
| static void hotkey_suspend(pm_message_t state) |
| { |
| /* Do these on suspend, we get the events on early resume! */ |
| hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; |
| hotkey_autosleep_ack = 0; |
| } |
| |
| static void hotkey_resume(void) |
| { |
| tpacpi_disable_brightness_delay(); |
| |
| if (hotkey_mask_get()) |
| printk(TPACPI_ERR |
| "error while trying to read hot key mask " |
| "from firmware\n"); |
| tpacpi_send_radiosw_update(); |
| hotkey_tablet_mode_notify_change(); |
| hotkey_wakeup_reason_notify_change(); |
| hotkey_wakeup_hotunplug_complete_notify_change(); |
| hotkey_poll_setup_safe(0); |
| } |
| |
| /* procfs -------------------------------------------------------------- */ |
| static int hotkey_read(char *p) |
| { |
| int res, status; |
| int len = 0; |
| |
| if (!tp_features.hotkey) { |
| len += sprintf(p + len, "status:\t\tnot supported\n"); |
| return len; |
| } |
| |
| if (mutex_lock_interruptible(&hotkey_mutex)) |
| return -ERESTARTSYS; |
| res = hotkey_status_get(&status); |
| if (!res) |
| res = hotkey_mask_get(); |
| mutex_unlock(&hotkey_mutex); |
| if (res) |
| return res; |
| |
| len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0)); |
| if (tp_features.hotkey_mask) { |
| len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask); |
| len += sprintf(p + len, |
| "commands:\tenable, disable, reset, <mask>\n"); |
| } else { |
| len += sprintf(p + len, "mask:\t\tnot supported\n"); |
| len += sprintf(p + len, "commands:\tenable, disable, reset\n"); |
| } |
| |
| return len; |
| } |
| |
| static int hotkey_write(char *buf) |
| { |
| int res, status; |
| u32 mask; |
| char *cmd; |
| |
| if (!tp_features.hotkey) |
| return -ENODEV; |
| |
| if (mutex_lock_interruptible(&hotkey_mutex)) |
| return -ERESTARTSYS; |
| |
| status = -1; |
| mask = hotkey_mask; |
| |
| res = 0; |
| while ((cmd = next_cmd(&buf))) { |
| if (strlencmp(cmd, "enable") == 0) { |
| status = 1; |
| } else if (strlencmp(cmd, "disable") == 0) { |
| status = 0; |
| } else if (strlencmp(cmd, "reset") == 0) { |
| status = hotkey_orig_status; |
| mask = hotkey_orig_mask; |
| } else if (sscanf(cmd, "0x%x", &mask) == 1) { |
| /* mask set */ |
| } else if (sscanf(cmd, "%x", &mask) == 1) { |
| /* mask set */ |
| } else { |
| res = -EINVAL; |
| goto errexit; |
| } |
| } |
| if (status != -1) |
| res = hotkey_status_set(status); |
| |
| if (!res && mask != hotkey_mask) |
| res = hotkey_mask_set(mask); |
| |
| errexit: |
| mutex_unlock(&hotkey_mutex); |
| return res; |
| } |
| |
| static const struct acpi_device_id ibm_htk_device_ids[] = { |
| {TPACPI_ACPI_HKEY_HID, 0}, |
| {"", 0}, |
| }; |
| |
| static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { |
| .hid = ibm_htk_device_ids, |
| .notify = hotkey_notify, |
| .handle = &hkey_handle, |
| .type = ACPI_DEVICE_NOTIFY, |
| }; |
| |
| static struct ibm_struct hotkey_driver_data = { |
| .name = "hotkey", |
| .read = hotkey_read, |
| .write = hotkey_write, |
| .exit = hotkey_exit, |
| .resume = hotkey_resume, |
| .suspend = hotkey_suspend, |
| .acpi = &ibm_hotkey_acpidriver, |
| }; |
| |
| /************************************************************************* |
| * Bluetooth subdriver |
| */ |
| |
| enum { |
| /* ACPI GBDC/SBDC bits */ |
| TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ |
| TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ |
| TP_ACPI_BLUETOOTH_UNK = 0x04, /* unknown function */ |
| }; |
| |
| static struct rfkill *tpacpi_bluetooth_rfkill; |
| |
| static int bluetooth_get_radiosw(void) |
| { |
| int status; |
| |
| if (!tp_features.bluetooth) |
| return -ENODEV; |
| |
| /* WLSW overrides bluetooth in firmware/hardware, reflect that */ |
| if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status) |
| return RFKILL_STATE_HARD_BLOCKED; |
| |
| if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) |
| return -EIO; |
| |
| return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? |
| RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED; |
| } |
| |
| static void bluetooth_update_rfk(void) |
| { |
| int status; |
| |
| if (!tpacpi_bluetooth_rfkill) |
| return; |
| |
| status = bluetooth_get_radiosw(); |
| if (status < 0) |
| return; |
| rfkill_force_state(tpacpi_bluetooth_rfkill, status); |
| } |
| |
| static int bluetooth_set_radiosw(int radio_on, int update_rfk) |
| { |
| int status; |
| |
| if (!tp_features.bluetooth) |
| return -ENODEV; |
| |
| /* WLSW overrides bluetooth in firmware/hardware, but there is no |
| * reason to risk weird behaviour. */ |
| if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status |
| && radio_on) |
| return -EPERM; |
| |
| if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) |
| return -EIO; |
| if (radio_on) |
| status |= TP_ACPI_BLUETOOTH_RADIOSSW; |
| else |
| status &= ~TP_ACPI_BLUETOOTH_RADIOSSW; |
| if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) |
| return -EIO; |
| |
| if (update_rfk) |
| bluetooth_update_rfk(); |
| |
| return 0; |
| } |
| |
| /* sysfs bluetooth enable ---------------------------------------------- */ |
| static ssize_t bluetooth_enable_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int status; |
| |
| status = bluetooth_get_radiosw(); |
| if (status < 0) |
| return status; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", |
| (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0); |
| } |
| |
| static ssize_t bluetooth_enable_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| int res; |
| |
| if (parse_strtoul(buf, 1, &t)) |
| return -EINVAL; |
| |
| res = bluetooth_set_radiosw(t, 1); |
| |
| return (res) ? res : count; |
| } |
| |
| static struct device_attribute dev_attr_bluetooth_enable = |
| __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO, |
| bluetooth_enable_show, bluetooth_enable_store); |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static struct attribute *bluetooth_attributes[] = { |
| &dev_attr_bluetooth_enable.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group bluetooth_attr_group = { |
| .attrs = bluetooth_attributes, |
| }; |
| |
| static int tpacpi_bluetooth_rfk_get(void *data, enum rfkill_state *state) |
| { |
| int bts = bluetooth_get_radiosw(); |
| |
| if (bts < 0) |
| return bts; |
| |
| *state = bts; |
| return 0; |
| } |
| |
| static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state) |
| { |
| return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0); |
| } |
| |
| static void bluetooth_exit(void) |
| { |
| if (tpacpi_bluetooth_rfkill) |
| rfkill_unregister(tpacpi_bluetooth_rfkill); |
| |
| sysfs_remove_group(&tpacpi_pdev->dev.kobj, |
| &bluetooth_attr_group); |
| } |
| |
| static int __init bluetooth_init(struct ibm_init_struct *iibm) |
| { |
| int res; |
| int status = 0; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(hkey); |
| |
| /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
| G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ |
| tp_features.bluetooth = hkey_handle && |
| acpi_evalf(hkey_handle, &status, "GBDC", "qd"); |
| |
| vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n", |
| str_supported(tp_features.bluetooth), |
| status); |
| |
| if (tp_features.bluetooth && |
| !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { |
| /* no bluetooth hardware present in system */ |
| tp_features.bluetooth = 0; |
| dbg_printk(TPACPI_DBG_INIT, |
| "bluetooth hardware not installed\n"); |
| } |
| |
| if (!tp_features.bluetooth) |
| return 1; |
| |
| res = sysfs_create_group(&tpacpi_pdev->dev.kobj, |
| &bluetooth_attr_group); |
| if (res) |
| return res; |
| |
| res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, |
| &tpacpi_bluetooth_rfkill, |
| RFKILL_TYPE_BLUETOOTH, |
| "tpacpi_bluetooth_sw", |
| tpacpi_bluetooth_rfk_set, |
| tpacpi_bluetooth_rfk_get); |
| if (res) { |
| bluetooth_exit(); |
| return res; |
| } |
| |
| return 0; |
| } |
| |
| /* procfs -------------------------------------------------------------- */ |
| static int bluetooth_read(char *p) |
| { |
| int len = 0; |
| int status = bluetooth_get_radiosw(); |
| |
| if (!tp_features.bluetooth) |
| len += sprintf(p + len, "status:\t\tnot supported\n"); |
| else { |
| len += sprintf(p + len, "status:\t\t%s\n", |
| (status == RFKILL_STATE_UNBLOCKED) ? |
| "enabled" : "disabled"); |
| len += sprintf(p + len, "commands:\tenable, disable\n"); |
| } |
| |
| return len; |
| } |
| |
| static int bluetooth_write(char *buf) |
| { |
| char *cmd; |
| |
| if (!tp_features.bluetooth) |
| return -ENODEV; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (strlencmp(cmd, "enable") == 0) { |
| bluetooth_set_radiosw(1, 1); |
| } else if (strlencmp(cmd, "disable") == 0) { |
| bluetooth_set_radiosw(0, 1); |
| } else |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static struct ibm_struct bluetooth_driver_data = { |
| .name = "bluetooth", |
| .read = bluetooth_read, |
| .write = bluetooth_write, |
| .exit = bluetooth_exit, |
| }; |
| |
| /************************************************************************* |
| * Wan subdriver |
| */ |
| |
| enum { |
| /* ACPI GWAN/SWAN bits */ |
| TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ |
| TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ |
| TP_ACPI_WANCARD_UNK = 0x04, /* unknown function */ |
| }; |
| |
| static struct rfkill *tpacpi_wan_rfkill; |
| |
| static int wan_get_radiosw(void) |
| { |
| int status; |
| |
| if (!tp_features.wan) |
| return -ENODEV; |
| |
| /* WLSW overrides WWAN in firmware/hardware, reflect that */ |
| if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status) |
| return RFKILL_STATE_HARD_BLOCKED; |
| |
| if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) |
| return -EIO; |
| |
| return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? |
| RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED; |
| } |
| |
| static void wan_update_rfk(void) |
| { |
| int status; |
| |
| if (!tpacpi_wan_rfkill) |
| return; |
| |
| status = wan_get_radiosw(); |
| if (status < 0) |
| return; |
| rfkill_force_state(tpacpi_wan_rfkill, status); |
| } |
| |
| static int wan_set_radiosw(int radio_on, int update_rfk) |
| { |
| int status; |
| |
| if (!tp_features.wan) |
| return -ENODEV; |
| |
| /* WLSW overrides bluetooth in firmware/hardware, but there is no |
| * reason to risk weird behaviour. */ |
| if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status |
| && radio_on) |
| return -EPERM; |
| |
| if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) |
| return -EIO; |
| if (radio_on) |
| status |= TP_ACPI_WANCARD_RADIOSSW; |
| else |
| status &= ~TP_ACPI_WANCARD_RADIOSSW; |
| if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) |
| return -EIO; |
| |
| if (update_rfk) |
| wan_update_rfk(); |
| |
| return 0; |
| } |
| |
| /* sysfs wan enable ---------------------------------------------------- */ |
| static ssize_t wan_enable_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int status; |
| |
| status = wan_get_radiosw(); |
| if (status < 0) |
| return status; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", |
| (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0); |
| } |
| |
| static ssize_t wan_enable_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| int res; |
| |
| if (parse_strtoul(buf, 1, &t)) |
| return -EINVAL; |
| |
| res = wan_set_radiosw(t, 1); |
| |
| return (res) ? res : count; |
| } |
| |
| static struct device_attribute dev_attr_wan_enable = |
| __ATTR(wwan_enable, S_IWUSR | S_IRUGO, |
| wan_enable_show, wan_enable_store); |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static struct attribute *wan_attributes[] = { |
| &dev_attr_wan_enable.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group wan_attr_group = { |
| .attrs = wan_attributes, |
| }; |
| |
| static int tpacpi_wan_rfk_get(void *data, enum rfkill_state *state) |
| { |
| int wans = wan_get_radiosw(); |
| |
| if (wans < 0) |
| return wans; |
| |
| *state = wans; |
| return 0; |
| } |
| |
| static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state) |
| { |
| return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0); |
| } |
| |
| static void wan_exit(void) |
| { |
| if (tpacpi_wan_rfkill) |
| rfkill_unregister(tpacpi_wan_rfkill); |
| |
| sysfs_remove_group(&tpacpi_pdev->dev.kobj, |
| &wan_attr_group); |
| } |
| |
| static int __init wan_init(struct ibm_init_struct *iibm) |
| { |
| int res; |
| int status = 0; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(hkey); |
| |
| tp_features.wan = hkey_handle && |
| acpi_evalf(hkey_handle, &status, "GWAN", "qd"); |
| |
| vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n", |
| str_supported(tp_features.wan), |
| status); |
| |
| if (tp_features.wan && |
| !(status & TP_ACPI_WANCARD_HWPRESENT)) { |
| /* no wan hardware present in system */ |
| tp_features.wan = 0; |
| dbg_printk(TPACPI_DBG_INIT, |
| "wan hardware not installed\n"); |
| } |
| |
| if (!tp_features.wan) |
| return 1; |
| |
| res = sysfs_create_group(&tpacpi_pdev->dev.kobj, |
| &wan_attr_group); |
| if (res) |
| return res; |
| |
| res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, |
| &tpacpi_wan_rfkill, |
| RFKILL_TYPE_WWAN, |
| "tpacpi_wwan_sw", |
| tpacpi_wan_rfk_set, |
| tpacpi_wan_rfk_get); |
| if (res) { |
| wan_exit(); |
| return res; |
| } |
| |
| return 0; |
| } |
| |
| /* procfs -------------------------------------------------------------- */ |
| static int wan_read(char *p) |
| { |
| int len = 0; |
| int status = wan_get_radiosw(); |
| |
| if (!tp_features.wan) |
| len += sprintf(p + len, "status:\t\tnot supported\n"); |
| else { |
| len += sprintf(p + len, "status:\t\t%s\n", |
| (status == RFKILL_STATE_UNBLOCKED) ? |
| "enabled" : "disabled"); |
| len += sprintf(p + len, "commands:\tenable, disable\n"); |
| } |
| |
| return len; |
| } |
| |
| static int wan_write(char *buf) |
| { |
| char *cmd; |
| |
| if (!tp_features.wan) |
| return -ENODEV; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (strlencmp(cmd, "enable") == 0) { |
| wan_set_radiosw(1, 1); |
| } else if (strlencmp(cmd, "disable") == 0) { |
| wan_set_radiosw(0, 1); |
| } else |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static struct ibm_struct wan_driver_data = { |
| .name = "wan", |
| .read = wan_read, |
| .write = wan_write, |
| .exit = wan_exit, |
| }; |
| |
| /************************************************************************* |
| * Video subdriver |
| */ |
| |
| #ifdef CONFIG_THINKPAD_ACPI_VIDEO |
| |
| enum video_access_mode { |
| TPACPI_VIDEO_NONE = 0, |
| TPACPI_VIDEO_570, /* 570 */ |
| TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ |
| TPACPI_VIDEO_NEW, /* all others */ |
| }; |
| |
| enum { /* video status flags, based on VIDEO_570 */ |
| TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ |
| TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ |
| TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ |
| }; |
| |
| enum { /* TPACPI_VIDEO_570 constants */ |
| TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ |
| TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to |
| * video_status_flags */ |
| TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ |
| TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ |
| }; |
| |
| static enum video_access_mode video_supported; |
| static int video_orig_autosw; |
| |
| static int video_autosw_get(void); |
| static int video_autosw_set(int enable); |
| |
| TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ |
| |
| static int __init video_init(struct ibm_init_struct *iibm) |
| { |
| int ivga; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(vid); |
| TPACPI_ACPIHANDLE_INIT(vid2); |
| |
| if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) |
| /* G41, assume IVGA doesn't change */ |
| vid_handle = vid2_handle; |
| |
| if (!vid_handle) |
| /* video switching not supported on R30, R31 */ |
| video_supported = TPACPI_VIDEO_NONE; |
| else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) |
| /* 570 */ |
| video_supported = TPACPI_VIDEO_570; |
| else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) |
| /* 600e/x, 770e, 770x */ |
| video_supported = TPACPI_VIDEO_770; |
| else |
| /* all others */ |
| video_supported = TPACPI_VIDEO_NEW; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", |
| str_supported(video_supported != TPACPI_VIDEO_NONE), |
| video_supported); |
| |
| return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1; |
| } |
| |
| static void video_exit(void) |
| { |
| dbg_printk(TPACPI_DBG_EXIT, |
| "restoring original video autoswitch mode\n"); |
| if (video_autosw_set(video_orig_autosw)) |
| printk(TPACPI_ERR "error while trying to restore original " |
| "video autoswitch mode\n"); |
| } |
| |
| static int video_outputsw_get(void) |
| { |
| int status = 0; |
| int i; |
| |
| switch (video_supported) { |
| case TPACPI_VIDEO_570: |
| if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", |
| TP_ACPI_VIDEO_570_PHSCMD)) |
| return -EIO; |
| status = i & TP_ACPI_VIDEO_570_PHSMASK; |
| break; |
| case TPACPI_VIDEO_770: |
| if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) |
| return -EIO; |
| if (i) |
| status |= TP_ACPI_VIDEO_S_LCD; |
| if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) |
| return -EIO; |
| if (i) |
| status |= TP_ACPI_VIDEO_S_CRT; |
| break; |
| case TPACPI_VIDEO_NEW: |
| if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || |
| !acpi_evalf(NULL, &i, "\\VCDC", "d")) |
| return -EIO; |
| if (i) |
| status |= TP_ACPI_VIDEO_S_CRT; |
| |
| if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || |
| !acpi_evalf(NULL, &i, "\\VCDL", "d")) |
| return -EIO; |
| if (i) |
| status |= TP_ACPI_VIDEO_S_LCD; |
| if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) |
| return -EIO; |
| if (i) |
| status |= TP_ACPI_VIDEO_S_DVI; |
| break; |
| default: |
| return -ENOSYS; |
| } |
| |
| return status; |
| } |
| |
| static int video_outputsw_set(int status) |
| { |
| int autosw; |
| int res = 0; |
| |
| switch (video_supported) { |
| case TPACPI_VIDEO_570: |
| res = acpi_evalf(NULL, NULL, |
| "\\_SB.PHS2", "vdd", |
| TP_ACPI_VIDEO_570_PHS2CMD, |
| status | TP_ACPI_VIDEO_570_PHS2SET); |
| break; |
| case TPACPI_VIDEO_770: |
| autosw = video_autosw_get(); |
| if (autosw < 0) |
| return autosw; |
| |
| res = video_autosw_set(1); |
| if (res) |
| return res; |
| res = acpi_evalf(vid_handle, NULL, |
| "ASWT", "vdd", status * 0x100, 0); |
| if (!autosw && video_autosw_set(autosw)) { |
| printk(TPACPI_ERR |
| "video auto-switch left enabled due to error\n"); |
| return -EIO; |
| } |
| break; |
| case TPACPI_VIDEO_NEW: |
| res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && |
| acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); |
| break; |
| default: |
| return -ENOSYS; |
| } |
| |
| return (res)? 0 : -EIO; |
| } |
| |
| static int video_autosw_get(void) |
| { |
| int autosw = 0; |
| |
| switch (video_supported) { |
| case TPACPI_VIDEO_570: |
| if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) |
| return -EIO; |
| break; |
| case TPACPI_VIDEO_770: |
| case TPACPI_VIDEO_NEW: |
| if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) |
| return -EIO; |
| break; |
| default: |
| return -ENOSYS; |
| } |
| |
| return autosw & 1; |
| } |
| |
| static int video_autosw_set(int enable) |
| { |
| if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0)) |
| return -EIO; |
| return 0; |
| } |
| |
| static int video_outputsw_cycle(void) |
| { |
| int autosw = video_autosw_get(); |
| int res; |
| |
| if (autosw < 0) |
| return autosw; |
| |
| switch (video_supported) { |
| case TPACPI_VIDEO_570: |
| res = video_autosw_set(1); |
| if (res) |
| return res; |
| res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); |
| break; |
| case TPACPI_VIDEO_770: |
| case TPACPI_VIDEO_NEW: |
| res = video_autosw_set(1); |
| if (res) |
| return res; |
| res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); |
| break; |
| default: |
| return -ENOSYS; |
| } |
| if (!autosw && video_autosw_set(autosw)) { |
| printk(TPACPI_ERR |
| "video auto-switch left enabled due to error\n"); |
| return -EIO; |
| } |
| |
| return (res)? 0 : -EIO; |
| } |
| |
| static int video_expand_toggle(void) |
| { |
| switch (video_supported) { |
| case TPACPI_VIDEO_570: |
| return acpi_evalf(ec_handle, NULL, "_Q17", "v")? |
| 0 : -EIO; |
| case TPACPI_VIDEO_770: |
| return acpi_evalf(vid_handle, NULL, "VEXP", "v")? |
| 0 : -EIO; |
| case TPACPI_VIDEO_NEW: |
| return acpi_evalf(NULL, NULL, "\\VEXP", "v")? |
| 0 : -EIO; |
| default: |
| return -ENOSYS; |
| } |
| /* not reached */ |
| } |
| |
| static int video_read(char *p) |
| { |
| int status, autosw; |
| int len = 0; |
| |
| if (video_supported == TPACPI_VIDEO_NONE) { |
| len += sprintf(p + len, "status:\t\tnot supported\n"); |
| return len; |
| } |
| |
| status = video_outputsw_get(); |
| if (status < 0) |
| return status; |
| |
| autosw = video_autosw_get(); |
| if (autosw < 0) |
| return autosw; |
| |
| len += sprintf(p + len, "status:\t\tsupported\n"); |
| len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0)); |
| len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1)); |
| if (video_supported == TPACPI_VIDEO_NEW) |
| len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3)); |
| len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0)); |
| len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n"); |
| len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n"); |
| if (video_supported == TPACPI_VIDEO_NEW) |
| len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n"); |
| len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n"); |
| len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n"); |
| |
| return len; |
| } |
| |
| static int video_write(char *buf) |
| { |
| char *cmd; |
| int enable, disable, status; |
| int res; |
| |
| if (video_supported == TPACPI_VIDEO_NONE) |
| return -ENODEV; |
| |
| enable = 0; |
| disable = 0; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (strlencmp(cmd, "lcd_enable") == 0) { |
| enable |= TP_ACPI_VIDEO_S_LCD; |
| } else if (strlencmp(cmd, "lcd_disable") == 0) { |
| disable |= TP_ACPI_VIDEO_S_LCD; |
| } else if (strlencmp(cmd, "crt_enable") == 0) { |
| enable |= TP_ACPI_VIDEO_S_CRT; |
| } else if (strlencmp(cmd, "crt_disable") == 0) { |
| disable |= TP_ACPI_VIDEO_S_CRT; |
| } else if (video_supported == TPACPI_VIDEO_NEW && |
| strlencmp(cmd, "dvi_enable") == 0) { |
| enable |= TP_ACPI_VIDEO_S_DVI; |
| } else if (video_supported == TPACPI_VIDEO_NEW && |
| strlencmp(cmd, "dvi_disable") == 0) { |
| disable |= TP_ACPI_VIDEO_S_DVI; |
| } else if (strlencmp(cmd, "auto_enable") == 0) { |
| res = video_autosw_set(1); |
| if (res) |
| return res; |
| } else if (strlencmp(cmd, "auto_disable") == 0) { |
| res = video_autosw_set(0); |
| if (res) |
| return res; |
| } else if (strlencmp(cmd, "video_switch") == 0) { |
| res = video_outputsw_cycle(); |
| if (res) |
| return res; |
| } else if (strlencmp(cmd, "expand_toggle") == 0) { |
| res = video_expand_toggle(); |
| if (res) |
| return res; |
| } else |
| return -EINVAL; |
| } |
| |
| if (enable || disable) { |
| status = video_outputsw_get(); |
| if (status < 0) |
| return status; |
| res = video_outputsw_set((status & ~disable) | enable); |
| if (res) |
| return res; |
| } |
| |
| return 0; |
| } |
| |
| static struct ibm_struct video_driver_data = { |
| .name = "video", |
| .read = video_read, |
| .write = video_write, |
| .exit = video_exit, |
| }; |
| |
| #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ |
| |
| /************************************************************************* |
| * Light (thinklight) subdriver |
| */ |
| |
| TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ |
| TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ |
| |
| static int light_get_status(void) |
| { |
| int status = 0; |
| |
| if (tp_features.light_status) { |
| if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) |
| return -EIO; |
| return (!!status); |
| } |
| |
| return -ENXIO; |
| } |
| |
| static int light_set_status(int status) |
| { |
| int rc; |
| |
| if (tp_features.light) { |
| if (cmos_handle) { |
| rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", |
| (status)? |
| TP_CMOS_THINKLIGHT_ON : |
| TP_CMOS_THINKLIGHT_OFF); |
| } else { |
| rc = acpi_evalf(lght_handle, NULL, NULL, "vd", |
| (status)? 1 : 0); |
| } |
| return (rc)? 0 : -EIO; |
| } |
| |
| return -ENXIO; |
| } |
| |
| static void light_set_status_worker(struct work_struct *work) |
| { |
| struct tpacpi_led_classdev *data = |
| container_of(work, struct tpacpi_led_classdev, work); |
| |
| if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) |
| light_set_status((data->new_brightness != LED_OFF)); |
| } |
| |
| static void light_sysfs_set(struct led_classdev *led_cdev, |
| enum led_brightness brightness) |
| { |
| struct tpacpi_led_classdev *data = |
| container_of(led_cdev, |
| struct tpacpi_led_classdev, |
| led_classdev); |
| data->new_brightness = brightness; |
| queue_work(tpacpi_wq, &data->work); |
| } |
| |
| static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) |
| { |
| return (light_get_status() == 1)? LED_FULL : LED_OFF; |
| } |
| |
| static struct tpacpi_led_classdev tpacpi_led_thinklight = { |
| .led_classdev = { |
| .name = "tpacpi::thinklight", |
| .brightness_set = &light_sysfs_set, |
| .brightness_get = &light_sysfs_get, |
| } |
| }; |
| |
| static int __init light_init(struct ibm_init_struct *iibm) |
| { |
| int rc; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(ledb); |
| TPACPI_ACPIHANDLE_INIT(lght); |
| TPACPI_ACPIHANDLE_INIT(cmos); |
| INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker); |
| |
| /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ |
| tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; |
| |
| if (tp_features.light) |
| /* light status not supported on |
| 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ |
| tp_features.light_status = |
| acpi_evalf(ec_handle, NULL, "KBLT", "qv"); |
| |
| vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", |
| str_supported(tp_features.light), |
| str_supported(tp_features.light_status)); |
| |
| if (!tp_features.light) |
| return 1; |
| |
| rc = led_classdev_register(&tpacpi_pdev->dev, |
| &tpacpi_led_thinklight.led_classdev); |
| |
| if (rc < 0) { |
| tp_features.light = 0; |
| tp_features.light_status = 0; |
| } else { |
| rc = 0; |
| } |
| |
| return rc; |
| } |
| |
| static void light_exit(void) |
| { |
| led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); |
| if (work_pending(&tpacpi_led_thinklight.work)) |
| flush_workqueue(tpacpi_wq); |
| } |
| |
| static int light_read(char *p) |
| { |
| int len = 0; |
| int status; |
| |
| if (!tp_features.light) { |
| len += sprintf(p + len, "status:\t\tnot supported\n"); |
| } else if (!tp_features.light_status) { |
| len += sprintf(p + len, "status:\t\tunknown\n"); |
| len += sprintf(p + len, "commands:\ton, off\n"); |
| } else { |
| status = light_get_status(); |
| if (status < 0) |
| return status; |
| len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0)); |
| len += sprintf(p + len, "commands:\ton, off\n"); |
| } |
| |
| return len; |
| } |
| |
| static int light_write(char *buf) |
| { |
| char *cmd; |
| int newstatus = 0; |
| |
| if (!tp_features.light) |
| return -ENODEV; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (strlencmp(cmd, "on") == 0) { |
| newstatus = 1; |
| } else if (strlencmp(cmd, "off") == 0) { |
| newstatus = 0; |
| } else |
| return -EINVAL; |
| } |
| |
| return light_set_status(newstatus); |
| } |
| |
| static struct ibm_struct light_driver_data = { |
| .name = "light", |
| .read = light_read, |
| .write = light_write, |
| .exit = light_exit, |
| }; |
| |
| /************************************************************************* |
| * Dock subdriver |
| */ |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DOCK |
| |
| static void dock_notify(struct ibm_struct *ibm, u32 event); |
| static int dock_read(char *p); |
| static int dock_write(char *buf); |
| |
| TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */ |
| "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */ |
| "\\_SB.PCI0.PCI1.DOCK", /* all others */ |
| "\\_SB.PCI.ISA.SLCE", /* 570 */ |
| ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */ |
| |
| /* don't list other alternatives as we install a notify handler on the 570 */ |
| TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */ |
| |
| static const struct acpi_device_id ibm_pci_device_ids[] = { |
| {PCI_ROOT_HID_STRING, 0}, |
| {"", 0}, |
| }; |
| |
| static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = { |
| { |
| .notify = dock_notify, |
| .handle = &dock_handle, |
| .type = ACPI_SYSTEM_NOTIFY, |
| }, |
| { |
| /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING. |
| * We just use it to get notifications of dock hotplug |
| * in very old thinkpads */ |
| .hid = ibm_pci_device_ids, |
| .notify = dock_notify, |
| .handle = &pci_handle, |
| .type = ACPI_SYSTEM_NOTIFY, |
| }, |
| }; |
| |
| static struct ibm_struct dock_driver_data[2] = { |
| { |
| .name = "dock", |
| .read = dock_read, |
| .write = dock_write, |
| .acpi = &ibm_dock_acpidriver[0], |
| }, |
| { |
| .name = "dock", |
| .acpi = &ibm_dock_acpidriver[1], |
| }, |
| }; |
| |
| #define dock_docked() (_sta(dock_handle) & 1) |
| |
| static int __init dock_init(struct ibm_init_struct *iibm) |
| { |
| vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(dock); |
| |
| vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n", |
| str_supported(dock_handle != NULL)); |
| |
| return (dock_handle)? 0 : 1; |
| } |
| |
| static int __init dock_init2(struct ibm_init_struct *iibm) |
| { |
| int dock2_needed; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n"); |
| |
| if (dock_driver_data[0].flags.acpi_driver_registered && |
| dock_driver_data[0].flags.acpi_notify_installed) { |
| TPACPI_ACPIHANDLE_INIT(pci); |
| dock2_needed = (pci_handle != NULL); |
| vdbg_printk(TPACPI_DBG_INIT, |
| "dock PCI handler for the TP 570 is %s\n", |
| str_supported(dock2_needed)); |
| } else { |
| vdbg_printk(TPACPI_DBG_INIT, |
| "dock subdriver part 2 not required\n"); |
| dock2_needed = 0; |
| } |
| |
| return (dock2_needed)? 0 : 1; |
| } |
| |
| static void dock_notify(struct ibm_struct *ibm, u32 event) |
| { |
| int docked = dock_docked(); |
| int pci = ibm->acpi->hid && ibm->acpi->device && |
| acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids); |
| int data; |
| |
| if (event == 1 && !pci) /* 570 */ |
| data = 1; /* button */ |
| else if (event == 1 && pci) /* 570 */ |
| data = 3; /* dock */ |
| else if (event == 3 && docked) |
| data = 1; /* button */ |
| else if (event == 3 && !docked) |
| data = 2; /* undock */ |
| else if (event == 0 && docked) |
| data = 3; /* dock */ |
| else { |
| printk(TPACPI_ERR "unknown dock event %d, status %d\n", |
| event, _sta(dock_handle)); |
| data = 0; /* unknown */ |
| } |
| acpi_bus_generate_proc_event(ibm->acpi->device, event, data); |
| acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class, |
| ibm->acpi->device->dev.bus_id, |
| event, data); |
| } |
| |
| static int dock_read(char *p) |
| { |
| int len = 0; |
| int docked = dock_docked(); |
| |
| if (!dock_handle) |
| len += sprintf(p + len, "status:\t\tnot supported\n"); |
| else if (!docked) |
| len += sprintf(p + len, "status:\t\tundocked\n"); |
| else { |
| len += sprintf(p + len, "status:\t\tdocked\n"); |
| len += sprintf(p + len, "commands:\tdock, undock\n"); |
| } |
| |
| return len; |
| } |
| |
| static int dock_write(char *buf) |
| { |
| char *cmd; |
| |
| if (!dock_docked()) |
| return -ENODEV; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (strlencmp(cmd, "undock") == 0) { |
| if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) || |
| !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1)) |
| return -EIO; |
| } else if (strlencmp(cmd, "dock") == 0) { |
| if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1)) |
| return -EIO; |
| } else |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| #endif /* CONFIG_THINKPAD_ACPI_DOCK */ |
| |
| /************************************************************************* |
| * Bay subdriver |
| */ |
| |
| #ifdef CONFIG_THINKPAD_ACPI_BAY |
| |
| TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */ |
| "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */ |
| "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */ |
| "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */ |
| ); /* A21e, R30, R31 */ |
| TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */ |
| "_EJ0", /* all others */ |
| ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */ |
| TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */ |
| "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */ |
| ); /* all others */ |
| TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */ |
| "_EJ0", /* 770x */ |
| ); /* all others */ |
| |
| static int __init bay_init(struct ibm_init_struct *iibm) |
| { |
| vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(bay); |
| if (bay_handle) |
| TPACPI_ACPIHANDLE_INIT(bay_ej); |
| TPACPI_ACPIHANDLE_INIT(bay2); |
| if (bay2_handle) |
| TPACPI_ACPIHANDLE_INIT(bay2_ej); |
| |
| tp_features.bay_status = bay_handle && |
| acpi_evalf(bay_handle, NULL, "_STA", "qv"); |
| tp_features.bay_status2 = bay2_handle && |
| acpi_evalf(bay2_handle, NULL, "_STA", "qv"); |
| |
| tp_features.bay_eject = bay_handle && bay_ej_handle && |
| (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental); |
| tp_features.bay_eject2 = bay2_handle && bay2_ej_handle && |
| (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental); |
| |
| vdbg_printk(TPACPI_DBG_INIT, |
| "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n", |
| str_supported(tp_features.bay_status), |
| str_supported(tp_features.bay_eject), |
| str_supported(tp_features.bay_status2), |
| str_supported(tp_features.bay_eject2)); |
| |
| return (tp_features.bay_status || tp_features.bay_eject || |
| tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1; |
| } |
| |
| static void bay_notify(struct ibm_struct *ibm, u32 event) |
| { |
| acpi_bus_generate_proc_event(ibm->acpi->device, event, 0); |
| acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class, |
| ibm->acpi->device->dev.bus_id, |
| event, 0); |
| } |
| |
| #define bay_occupied(b) (_sta(b##_handle) & 1) |
| |
| static int bay_read(char *p) |
| { |
| int len = 0; |
| int occupied = bay_occupied(bay); |
| int occupied2 = bay_occupied(bay2); |
| int eject, eject2; |
| |
| len += sprintf(p + len, "status:\t\t%s\n", |
| tp_features.bay_status ? |
| (occupied ? "occupied" : "unoccupied") : |
| "not supported"); |
| if (tp_features.bay_status2) |
| len += sprintf(p + len, "status2:\t%s\n", occupied2 ? |
| "occupied" : "unoccupied"); |
| |
| eject = tp_features.bay_eject && occupied; |
| eject2 = tp_features.bay_eject2 && occupied2; |
| |
| if (eject && eject2) |
| len += sprintf(p + len, "commands:\teject, eject2\n"); |
| else if (eject) |
| len += sprintf(p + len, "commands:\teject\n"); |
| else if (eject2) |
| len += sprintf(p + len, "commands:\teject2\n"); |
| |
| return len; |
| } |
| |
| static int bay_write(char *buf) |
| { |
| char *cmd; |
| |
| if (!tp_features.bay_eject && !tp_features.bay_eject2) |
| return -ENODEV; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) { |
| if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1)) |
| return -EIO; |
| } else if (tp_features.bay_eject2 && |
| strlencmp(cmd, "eject2") == 0) { |
| if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1)) |
| return -EIO; |
| } else |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static struct tp_acpi_drv_struct ibm_bay_acpidriver = { |
| .notify = bay_notify, |
| .handle = &bay_handle, |
| .type = ACPI_SYSTEM_NOTIFY, |
| }; |
| |
| static struct ibm_struct bay_driver_data = { |
| .name = "bay", |
| .read = bay_read, |
| .write = bay_write, |
| .acpi = &ibm_bay_acpidriver, |
| }; |
| |
| #endif /* CONFIG_THINKPAD_ACPI_BAY */ |
| |
| /************************************************************************* |
| * CMOS subdriver |
| */ |
| |
| /* sysfs cmos_command -------------------------------------------------- */ |
| static ssize_t cmos_command_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long cmos_cmd; |
| int res; |
| |
| if (parse_strtoul(buf, 21, &cmos_cmd)) |
| return -EINVAL; |
| |
| res = issue_thinkpad_cmos_command(cmos_cmd); |
| return (res)? res : count; |
| } |
| |
| static struct device_attribute dev_attr_cmos_command = |
| __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store); |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static int __init cmos_init(struct ibm_init_struct *iibm) |
| { |
| int res; |
| |
| vdbg_printk(TPACPI_DBG_INIT, |
| "initializing cmos commands subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(cmos); |
| |
| vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", |
| str_supported(cmos_handle != NULL)); |
| |
| res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); |
| if (res) |
| return res; |
| |
| return (cmos_handle)? 0 : 1; |
| } |
| |
| static void cmos_exit(void) |
| { |
| device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); |
| } |
| |
| static int cmos_read(char *p) |
| { |
| int len = 0; |
| |
| /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
| R30, R31, T20-22, X20-21 */ |
| if (!cmos_handle) |
| len += sprintf(p + len, "status:\t\tnot supported\n"); |
| else { |
| len += sprintf(p + len, "status:\t\tsupported\n"); |
| len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n"); |
| } |
| |
| return len; |
| } |
| |
| static int cmos_write(char *buf) |
| { |
| char *cmd; |
| int cmos_cmd, res; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (sscanf(cmd, "%u", &cmos_cmd) == 1 && |
| cmos_cmd >= 0 && cmos_cmd <= 21) { |
| /* cmos_cmd set */ |
| } else |
| return -EINVAL; |
| |
| res = issue_thinkpad_cmos_command(cmos_cmd); |
| if (res) |
| return res; |
| } |
| |
| return 0; |
| } |
| |
| static struct ibm_struct cmos_driver_data = { |
| .name = "cmos", |
| .read = cmos_read, |
| .write = cmos_write, |
| .exit = cmos_exit, |
| }; |
| |
| /************************************************************************* |
| * LED subdriver |
| */ |
| |
| enum led_access_mode { |
| TPACPI_LED_NONE = 0, |
| TPACPI_LED_570, /* 570 */ |
| TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ |
| TPACPI_LED_NEW, /* all others */ |
| }; |
| |
| enum { /* For TPACPI_LED_OLD */ |
| TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ |
| TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ |
| TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ |
| }; |
| |
| enum led_status_t { |
| TPACPI_LED_OFF = 0, |
| TPACPI_LED_ON, |
| TPACPI_LED_BLINK, |
| }; |
| |
| static enum led_access_mode led_supported; |
| |
| TPACPI_HANDLE(led, ec, "SLED", /* 570 */ |
| "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */ |
| /* T20-22, X20-21 */ |
| "LED", /* all others */ |
| ); /* R30, R31 */ |
| |
| #define TPACPI_LED_NUMLEDS 8 |
| static struct tpacpi_led_classdev *tpacpi_leds; |
| static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; |
| static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { |
| /* there's a limit of 19 chars + NULL before 2.6.26 */ |
| "tpacpi::power", |
| "tpacpi:orange:batt", |
| "tpacpi:green:batt", |
| "tpacpi::dock_active", |
| "tpacpi::bay_active", |
| "tpacpi::dock_batt", |
| "tpacpi::unknown_led", |
| "tpacpi::standby", |
| }; |
| |
| static int led_get_status(const unsigned int led) |
| { |
| int status; |
| enum led_status_t led_s; |
| |
| switch (led_supported) { |
| case TPACPI_LED_570: |
| if (!acpi_evalf(ec_handle, |
| &status, "GLED", "dd", 1 << led)) |
| return -EIO; |
| led_s = (status == 0)? |
| TPACPI_LED_OFF : |
| ((status == 1)? |
| TPACPI_LED_ON : |
| TPACPI_LED_BLINK); |
| tpacpi_led_state_cache[led] = led_s; |
| return led_s; |
| default: |
| return -ENXIO; |
| } |
| |
| /* not reached */ |
| } |
| |
| static int led_set_status(const unsigned int led, |
| const enum led_status_t ledstatus) |
| { |
| /* off, on, blink. Index is led_status_t */ |
| static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; |
| static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; |
| |
| int rc = 0; |
| |
| switch (led_supported) { |
| case TPACPI_LED_570: |
| /* 570 */ |
| if (led > 7) |
| return -EINVAL; |
| if (!acpi_evalf(led_handle, NULL, NULL, "vdd", |
| (1 << led), led_sled_arg1[ledstatus])) |
| rc = -EIO; |
| break; |
| case TPACPI_LED_OLD: |
| /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ |
| if (led > 7) |
| return -EINVAL; |
| rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); |
| if (rc >= 0) |
| rc = ec_write(TPACPI_LED_EC_HLBL, |
| (ledstatus == TPACPI_LED_BLINK) << led); |
| if (rc >= 0) |
| rc = ec_write(TPACPI_LED_EC_HLCL, |
| (ledstatus != TPACPI_LED_OFF) << led); |
| break; |
| case TPACPI_LED_NEW: |
| /* all others */ |
| if (!acpi_evalf(led_handle, NULL, NULL, "vdd", |
| led, led_led_arg1[ledstatus])) |
| rc = -EIO; |
| break; |
| default: |
| rc = -ENXIO; |
| } |
| |
| if (!rc) |
| tpacpi_led_state_cache[led] = ledstatus; |
| |
| return rc; |
| } |
| |
| static void led_sysfs_set_status(unsigned int led, |
| enum led_brightness brightness) |
| { |
| led_set_status(led, |
| (brightness == LED_OFF) ? |
| TPACPI_LED_OFF : |
| (tpacpi_led_state_cache[led] == TPACPI_LED_BLINK) ? |
| TPACPI_LED_BLINK : TPACPI_LED_ON); |
| } |
| |
| static void led_set_status_worker(struct work_struct *work) |
| { |
| struct tpacpi_led_classdev *data = |
| container_of(work, struct tpacpi_led_classdev, work); |
| |
| if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) |
| led_sysfs_set_status(data->led, data->new_brightness); |
| } |
| |
| static void led_sysfs_set(struct led_classdev *led_cdev, |
| enum led_brightness brightness) |
| { |
| struct tpacpi_led_classdev *data = container_of(led_cdev, |
| struct tpacpi_led_classdev, led_classdev); |
| |
| data->new_brightness = brightness; |
| queue_work(tpacpi_wq, &data->work); |
| } |
| |
| static int led_sysfs_blink_set(struct led_classdev *led_cdev, |
| unsigned long *delay_on, unsigned long *delay_off) |
| { |
| struct tpacpi_led_classdev *data = container_of(led_cdev, |
| struct tpacpi_led_classdev, led_classdev); |
| |
| /* Can we choose the flash rate? */ |
| if (*delay_on == 0 && *delay_off == 0) { |
| /* yes. set them to the hardware blink rate (1 Hz) */ |
| *delay_on = 500; /* ms */ |
| *delay_off = 500; /* ms */ |
| } else if ((*delay_on != 500) || (*delay_off != 500)) |
| return -EINVAL; |
| |
| data->new_brightness = TPACPI_LED_BLINK; |
| queue_work(tpacpi_wq, &data->work); |
| |
| return 0; |
| } |
| |
| static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) |
| { |
| int rc; |
| |
| struct tpacpi_led_classdev *data = container_of(led_cdev, |
| struct tpacpi_led_classdev, led_classdev); |
| |
| rc = led_get_status(data->led); |
| |
| if (rc == TPACPI_LED_OFF || rc < 0) |
| rc = LED_OFF; /* no error handling in led class :( */ |
| else |
| rc = LED_FULL; |
| |
| return rc; |
| } |
| |
| static void led_exit(void) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { |
| if (tpacpi_leds[i].led_classdev.name) |
| led_classdev_unregister(&tpacpi_leds[i].led_classdev); |
| } |
| |
| kfree(tpacpi_leds); |
| } |
| |
| static int __init led_init(struct ibm_init_struct *iibm) |
| { |
| unsigned int i; |
| int rc; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(led); |
| |
| if (!led_handle) |
| /* led not supported on R30, R31 */ |
| led_supported = TPACPI_LED_NONE; |
| else if (strlencmp(led_path, "SLED") == 0) |
| /* 570 */ |
| led_supported = TPACPI_LED_570; |
| else if (strlencmp(led_path, "SYSL") == 0) |
| /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ |
| led_supported = TPACPI_LED_OLD; |
| else |
| /* all others */ |
| led_supported = TPACPI_LED_NEW; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", |
| str_supported(led_supported), led_supported); |
| |
| tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS, |
| GFP_KERNEL); |
| if (!tpacpi_leds) { |
| printk(TPACPI_ERR "Out of memory for LED data\n"); |
| return -ENOMEM; |
| } |
| |
| for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { |
| tpacpi_leds[i].led = i; |
| |
| tpacpi_leds[i].led_classdev.brightness_set = &led_sysfs_set; |
| tpacpi_leds[i].led_classdev.blink_set = &led_sysfs_blink_set; |
| if (led_supported == TPACPI_LED_570) |
| tpacpi_leds[i].led_classdev.brightness_get = |
| &led_sysfs_get; |
| |
| tpacpi_leds[i].led_classdev.name = tpacpi_led_names[i]; |
| |
| INIT_WORK(&tpacpi_leds[i].work, led_set_status_worker); |
| |
| rc = led_classdev_register(&tpacpi_pdev->dev, |
| &tpacpi_leds[i].led_classdev); |
| if (rc < 0) { |
| tpacpi_leds[i].led_classdev.name = NULL; |
| led_exit(); |
| return rc; |
| } |
| } |
| |
| return (led_supported != TPACPI_LED_NONE)? 0 : 1; |
| } |
| |
| #define str_led_status(s) \ |
| ((s) == TPACPI_LED_OFF ? "off" : \ |
| ((s) == TPACPI_LED_ON ? "on" : "blinking")) |
| |
| static int led_read(char *p) |
| { |
| int len = 0; |
| |
| if (!led_supported) { |
| len += sprintf(p + len, "status:\t\tnot supported\n"); |
| return len; |
| } |
| len += sprintf(p + len, "status:\t\tsupported\n"); |
| |
| if (led_supported == TPACPI_LED_570) { |
| /* 570 */ |
| int i, status; |
| for (i = 0; i < 8; i++) { |
| status = led_get_status(i); |
| if (status < 0) |
| return -EIO; |
| len += sprintf(p + len, "%d:\t\t%s\n", |
| i, str_led_status(status)); |
| } |
| } |
| |
| len += sprintf(p + len, "commands:\t" |
| "<led> on, <led> off, <led> blink (<led> is 0-7)\n"); |
| |
| return len; |
| } |
| |
| static int led_write(char *buf) |
| { |
| char *cmd; |
| int led, rc; |
| enum led_status_t s; |
| |
| if (!led_supported) |
| return -ENODEV; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7) |
| return -EINVAL; |
| |
| if (strstr(cmd, "off")) { |
| s = TPACPI_LED_OFF; |
| } else if (strstr(cmd, "on")) { |
| s = TPACPI_LED_ON; |
| } else if (strstr(cmd, "blink")) { |
| s = TPACPI_LED_BLINK; |
| } else { |
| return -EINVAL; |
| } |
| |
| rc = led_set_status(led, s); |
| if (rc < 0) |
| return rc; |
| } |
| |
| return 0; |
| } |
| |
| static struct ibm_struct led_driver_data = { |
| .name = "led", |
| .read = led_read, |
| .write = led_write, |
| .exit = led_exit, |
| }; |
| |
| /************************************************************************* |
| * Beep subdriver |
| */ |
| |
| TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ |
| |
| static int __init beep_init(struct ibm_init_struct *iibm) |
| { |
| vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); |
| |
| TPACPI_ACPIHANDLE_INIT(beep); |
| |
| vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", |
| str_supported(beep_handle != NULL)); |
| |
| return (beep_handle)? 0 : 1; |
| } |
| |
| static int beep_read(char *p) |
| { |
| int len = 0; |
| |
| if (!beep_handle) |
| len += sprintf(p + len, "status:\t\tnot supported\n"); |
| else { |
| len += sprintf(p + len, "status:\t\tsupported\n"); |
| len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n"); |
| } |
| |
| return len; |
| } |
| |
| static int beep_write(char *buf) |
| { |
| char *cmd; |
| int beep_cmd; |
| |
| if (!beep_handle) |
| return -ENODEV; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (sscanf(cmd, "%u", &beep_cmd) == 1 && |
| beep_cmd >= 0 && beep_cmd <= 17) { |
| /* beep_cmd set */ |
| } else |
| return -EINVAL; |
| if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0)) |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static struct ibm_struct beep_driver_data = { |
| .name = "beep", |
| .read = beep_read, |
| .write = beep_write, |
| }; |
| |
| /************************************************************************* |
| * Thermal subdriver |
| */ |
| |
| enum thermal_access_mode { |
| TPACPI_THERMAL_NONE = 0, /* No thermal support */ |
| TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ |
| TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ |
| TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ |
| TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ |
| }; |
| |
| enum { /* TPACPI_THERMAL_TPEC_* */ |
| TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ |
| TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ |
| TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ |
| }; |
| |
| #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ |
| struct ibm_thermal_sensors_struct { |
| s32 temp[TPACPI_MAX_THERMAL_SENSORS]; |
| }; |
| |
| static enum thermal_access_mode thermal_read_mode; |
| |
| /* idx is zero-based */ |
| static int thermal_get_sensor(int idx, s32 *value) |
| { |
| int t; |
| s8 tmp; |
| char tmpi[5]; |
| |
| t = TP_EC_THERMAL_TMP0; |
| |
| switch (thermal_read_mode) { |
| #if TPACPI_MAX_THERMAL_SENSORS >= 16 |
| case TPACPI_THERMAL_TPEC_16: |
| if (idx >= 8 && idx <= 15) { |
| t = TP_EC_THERMAL_TMP8; |
| idx -= 8; |
| } |
| /* fallthrough */ |
| #endif |
| case TPACPI_THERMAL_TPEC_8: |
| if (idx <= 7) { |
| if (!acpi_ec_read(t + idx, &tmp)) |
| return -EIO; |
| *value = tmp * 1000; |
| return 0; |
| } |
| break; |
| |
| case TPACPI_THERMAL_ACPI_UPDT: |
| if (idx <= 7) { |
| snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); |
| if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) |
| return -EIO; |
| if (!acpi_evalf(ec_handle, &t, tmpi, "d")) |
| return -EIO; |
| *value = (t - 2732) * 100; |
| return 0; |
| } |
| break; |
| |
| case TPACPI_THERMAL_ACPI_TMP07: |
| if (idx <= 7) { |
| snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); |
| if (!acpi_evalf(ec_handle, &t, tmpi, "d")) |
| return -EIO; |
| if (t > 127 || t < -127) |
| t = TP_EC_THERMAL_TMP_NA; |
| *value = t * 1000; |
| return 0; |
| } |
| break; |
| |
| case TPACPI_THERMAL_NONE: |
| default: |
| return -ENOSYS; |
| } |
| |
| return -EINVAL; |
| } |
| |
| static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) |
| { |
| int res, i; |
| int n; |
| |
| n = 8; |
| i = 0; |
| |
| if (!s) |
| return -EINVAL; |
| |
| if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) |
| n = 16; |
| |
| for (i = 0 ; i < n; i++) { |
| res = thermal_get_sensor(i, &s->temp[i]); |
| if (res) |
| return res; |
| } |
| |
| return n; |
| } |
| |
| /* sysfs temp##_input -------------------------------------------------- */ |
| |
| static ssize_t thermal_temp_input_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct sensor_device_attribute *sensor_attr = |
| to_sensor_dev_attr(attr); |
| int idx = sensor_attr->index; |
| s32 value; |
| int res; |
| |
| res = thermal_get_sensor(idx, &value); |
| if (res) |
| return res; |
| if (value == TP_EC_THERMAL_TMP_NA * 1000) |
| return -ENXIO; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", value); |
| } |
| |
| #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ |
| SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ |
| thermal_temp_input_show, NULL, _idxB) |
| |
| static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { |
| THERMAL_SENSOR_ATTR_TEMP(1, 0), |
| THERMAL_SENSOR_ATTR_TEMP(2, 1), |
| THERMAL_SENSOR_ATTR_TEMP(3, 2), |
| THERMAL_SENSOR_ATTR_TEMP(4, 3), |
| THERMAL_SENSOR_ATTR_TEMP(5, 4), |
| THERMAL_SENSOR_ATTR_TEMP(6, 5), |
| THERMAL_SENSOR_ATTR_TEMP(7, 6), |
| THERMAL_SENSOR_ATTR_TEMP(8, 7), |
| THERMAL_SENSOR_ATTR_TEMP(9, 8), |
| THERMAL_SENSOR_ATTR_TEMP(10, 9), |
| THERMAL_SENSOR_ATTR_TEMP(11, 10), |
| THERMAL_SENSOR_ATTR_TEMP(12, 11), |
| THERMAL_SENSOR_ATTR_TEMP(13, 12), |
| THERMAL_SENSOR_ATTR_TEMP(14, 13), |
| THERMAL_SENSOR_ATTR_TEMP(15, 14), |
| THERMAL_SENSOR_ATTR_TEMP(16, 15), |
| }; |
| |
| #define THERMAL_ATTRS(X) \ |
| &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr |
| |
| static struct attribute *thermal_temp_input_attr[] = { |
| THERMAL_ATTRS(8), |
| THERMAL_ATTRS(9), |
| THERMAL_ATTRS(10), |
| THERMAL_ATTRS(11), |
| THERMAL_ATTRS(12), |
| THERMAL_ATTRS(13), |
| THERMAL_ATTRS(14), |
| THERMAL_ATTRS(15), |
| THERMAL_ATTRS(0), |
| THERMAL_ATTRS(1), |
| THERMAL_ATTRS(2), |
| THERMAL_ATTRS(3), |
| THERMAL_ATTRS(4), |
| THERMAL_ATTRS(5), |
| THERMAL_ATTRS(6), |
| THERMAL_ATTRS(7), |
| NULL |
| }; |
| |
| static const struct attribute_group thermal_temp_input16_group = { |
| .attrs = thermal_temp_input_attr |
| }; |
| |
| static const struct attribute_group thermal_temp_input8_group = { |
| .attrs = &thermal_temp_input_attr[8] |
| }; |
| |
| #undef THERMAL_SENSOR_ATTR_TEMP |
| #undef THERMAL_ATTRS |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static int __init thermal_init(struct ibm_init_struct *iibm) |
| { |
| u8 t, ta1, ta2; |
| int i; |
| int acpi_tmp7; |
| int res; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); |
| |
| acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); |
| |
| if (thinkpad_id.ec_model) { |
| /* |
| * Direct EC access mode: sensors at registers |
| * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for |
| * non-implemented, thermal sensors return 0x80 when |
| * not available |
| */ |
| |
| ta1 = ta2 = 0; |
| for (i = 0; i < 8; i++) { |
| if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { |
| ta1 |= t; |
| } else { |
| ta1 = 0; |
| break; |
| } |
| if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { |
| ta2 |= t; |
| } else { |
| ta1 = 0; |
| break; |
| } |
| } |
| if (ta1 == 0) { |
| /* This is sheer paranoia, but we handle it anyway */ |
| if (acpi_tmp7) { |
| printk(TPACPI_ERR |
| "ThinkPad ACPI EC access misbehaving, " |
| "falling back to ACPI TMPx access " |
| "mode\n"); |
| thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; |
| } else { |
| printk(TPACPI_ERR |
| "ThinkPad ACPI EC access misbehaving, " |
| "disabling thermal sensors access\n"); |
| thermal_read_mode = TPACPI_THERMAL_NONE; |
| } |
| } else { |
| thermal_read_mode = |
| (ta2 != 0) ? |
| TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; |
| } |
| } else if (acpi_tmp7) { |
| if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { |
| /* 600e/x, 770e, 770x */ |
| thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; |
| } else { |
| /* Standard ACPI TMPx access, max 8 sensors */ |
| thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; |
| } |
| } else { |
| /* temperatures not supported on 570, G4x, R30, R31, R32 */ |
| thermal_read_mode = TPACPI_THERMAL_NONE; |
| } |
| |
| vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", |
| str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), |
| thermal_read_mode); |
| |
| switch (thermal_read_mode) { |
| case TPACPI_THERMAL_TPEC_16: |
| res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, |
| &thermal_temp_input16_group); |
| if (res) |
| return res; |
| break; |
| case TPACPI_THERMAL_TPEC_8: |
| case TPACPI_THERMAL_ACPI_TMP07: |
| case TPACPI_THERMAL_ACPI_UPDT: |
| res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, |
| &thermal_temp_input8_group); |
| if (res) |
| return res; |
| break; |
| case TPACPI_THERMAL_NONE: |
| default: |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static void thermal_exit(void) |
| { |
| switch (thermal_read_mode) { |
| case TPACPI_THERMAL_TPEC_16: |
| sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, |
| &thermal_temp_input16_group); |
| break; |
| case TPACPI_THERMAL_TPEC_8: |
| case TPACPI_THERMAL_ACPI_TMP07: |
| case TPACPI_THERMAL_ACPI_UPDT: |
| sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, |
| &thermal_temp_input16_group); |
| break; |
| case TPACPI_THERMAL_NONE: |
| default: |
| break; |
| } |
| } |
| |
| static int thermal_read(char *p) |
| { |
| int len = 0; |
| int n, i; |
| struct ibm_thermal_sensors_struct t; |
| |
| n = thermal_get_sensors(&t); |
| if (unlikely(n < 0)) |
| return n; |
| |
| len += sprintf(p + len, "temperatures:\t"); |
| |
| if (n > 0) { |
| for (i = 0; i < (n - 1); i++) |
| len += sprintf(p + len, "%d ", t.temp[i] / 1000); |
| len += sprintf(p + len, "%d\n", t.temp[i] / 1000); |
| } else |
| len += sprintf(p + len, "not supported\n"); |
| |
| return len; |
| } |
| |
| static struct ibm_struct thermal_driver_data = { |
| .name = "thermal", |
| .read = thermal_read, |
| .exit = thermal_exit, |
| }; |
| |
| /************************************************************************* |
| * EC Dump subdriver |
| */ |
| |
| static u8 ecdump_regs[256]; |
| |
| static int ecdump_read(char *p) |
| { |
| int len = 0; |
| int i, j; |
| u8 v; |
| |
| len += sprintf(p + len, "EC " |
| " +00 +01 +02 +03 +04 +05 +06 +07" |
| " +08 +09 +0a +0b +0c +0d +0e +0f\n"); |
| for (i = 0; i < 256; i += 16) { |
| len += sprintf(p + len, "EC 0x%02x:", i); |
| for (j = 0; j < 16; j++) { |
| if (!acpi_ec_read(i + j, &v)) |
| break; |
| if (v != ecdump_regs[i + j]) |
| len += sprintf(p + len, " *%02x", v); |
| else |
| len += sprintf(p + len, " %02x", v); |
| ecdump_regs[i + j] = v; |
| } |
| len += sprintf(p + len, "\n"); |
| if (j != 16) |
| break; |
| } |
| |
| /* These are way too dangerous to advertise openly... */ |
| #if 0 |
| len += sprintf(p + len, "commands:\t0x<offset> 0x<value>" |
| " (<offset> is 00-ff, <value> is 00-ff)\n"); |
| len += sprintf(p + len, "commands:\t0x<offset> <value> " |
| " (<offset> is 00-ff, <value> is 0-255)\n"); |
| #endif |
| return len; |
| } |
| |
| static int ecdump_write(char *buf) |
| { |
| char *cmd; |
| int i, v; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) { |
| /* i and v set */ |
| } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) { |
| /* i and v set */ |
| } else |
| return -EINVAL; |
| if (i >= 0 && i < 256 && v >= 0 && v < 256) { |
| if (!acpi_ec_write(i, v)) |
| return -EIO; |
| } else |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static struct ibm_struct ecdump_driver_data = { |
| .name = "ecdump", |
| .read = ecdump_read, |
| .write = ecdump_write, |
| .flags.experimental = 1, |
| }; |
| |
| /************************************************************************* |
| * Backlight/brightness subdriver |
| */ |
| |
| #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" |
| |
| enum { |
| TP_EC_BACKLIGHT = 0x31, |
| |
| /* TP_EC_BACKLIGHT bitmasks */ |
| TP_EC_BACKLIGHT_LVLMSK = 0x1F, |
| TP_EC_BACKLIGHT_CMDMSK = 0xE0, |
| TP_EC_BACKLIGHT_MAPSW = 0x20, |
| }; |
| |
| static struct backlight_device *ibm_backlight_device; |
| static int brightness_mode; |
| static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ |
| |
| static struct mutex brightness_mutex; |
| |
| /* |
| * ThinkPads can read brightness from two places: EC 0x31, or |
| * CMOS NVRAM byte 0x5E, bits 0-3. |
| * |
| * EC 0x31 has the following layout |
| * Bit 7: unknown function |
| * Bit 6: unknown function |
| * Bit 5: Z: honour scale changes, NZ: ignore scale changes |
| * Bit 4: must be set to zero to avoid problems |
| * Bit 3-0: backlight brightness level |
| * |
| * brightness_get_raw returns status data in the EC 0x31 layout |
| */ |
| static int brightness_get_raw(int *status) |
| { |
| u8 lec = 0, lcmos = 0, level = 0; |
| |
| if (brightness_mode & 1) { |
| if (!acpi_ec_read(TP_EC_BACKLIGHT, &lec)) |
| return -EIO; |
| level = lec & TP_EC_BACKLIGHT_LVLMSK; |
| }; |
| if (brightness_mode & 2) { |
| lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) |
| & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) |
| >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; |
| lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07; |
| level = lcmos; |
| } |
| |
| if (brightness_mode == 3) { |
| *status = lec; /* Prefer EC, CMOS is just a backing store */ |
| lec &= TP_EC_BACKLIGHT_LVLMSK; |
| if (lec == lcmos) |
| tp_warned.bright_cmos_ec_unsync = 0; |
| else { |
| if (!tp_warned.bright_cmos_ec_unsync) { |
| printk(TPACPI_ERR |
| "CMOS NVRAM (%u) and EC (%u) do not " |
| "agree on display brightness level\n", |
| (unsigned int) lcmos, |
| (unsigned int) lec); |
| tp_warned.bright_cmos_ec_unsync = 1; |
| } |
| return -EIO; |
| } |
| } else { |
| *status = level; |
| } |
| |
| return 0; |
| } |
| |
| /* May return EINTR which can always be mapped to ERESTARTSYS */ |
| static int brightness_set(int value) |
| { |
| int cmos_cmd, inc, i, res; |
| int current_value; |
| int command_bits; |
| |
| if (value > ((tp_features.bright_16levels)? 15 : 7) || |
| value < 0) |
| return -EINVAL; |
| |
| res = mutex_lock_interruptible(&brightness_mutex); |
| if (res < 0) |
| return res; |
| |
| res = brightness_get_raw(¤t_value); |
| if (res < 0) |
| goto errout; |
| |
| command_bits = current_value & TP_EC_BACKLIGHT_CMDMSK; |
| current_value &= TP_EC_BACKLIGHT_LVLMSK; |
| |
| cmos_cmd = value > current_value ? |
| TP_CMOS_BRIGHTNESS_UP : |
| TP_CMOS_BRIGHTNESS_DOWN; |
| inc = (value > current_value)? 1 : -1; |
| |
| res = 0; |
| for (i = current_value; i != value; i += inc) { |
| if ((brightness_mode & 2) && |
| issue_thinkpad_cmos_command(cmos_cmd)) { |
| res = -EIO; |
| goto errout; |
| } |
| if ((brightness_mode & 1) && |
| !acpi_ec_write(TP_EC_BACKLIGHT, |
| (i + inc) | command_bits)) { |
| res = -EIO; |
| goto errout;; |
| } |
| } |
| |
| errout: |
| mutex_unlock(&brightness_mutex); |
| return res; |
| } |
| |
| /* sysfs backlight class ----------------------------------------------- */ |
| |
| static int brightness_update_status(struct backlight_device *bd) |
| { |
| /* it is the backlight class's job (caller) to handle |
| * EINTR and other errors properly */ |
| return brightness_set( |
| (bd->props.fb_blank == FB_BLANK_UNBLANK && |
| bd->props.power == FB_BLANK_UNBLANK) ? |
| bd->props.brightness : 0); |
| } |
| |
| static int brightness_get(struct backlight_device *bd) |
| { |
| int status, res; |
| |
| res = brightness_get_raw(&status); |
| if (res < 0) |
| return 0; /* FIXME: teach backlight about error handling */ |
| |
| return status & TP_EC_BACKLIGHT_LVLMSK; |
| } |
| |
| static struct backlight_ops ibm_backlight_data = { |
| .get_brightness = brightness_get, |
| .update_status = brightness_update_status, |
| }; |
| |
| /* --------------------------------------------------------------------- */ |
| |
| static int __init brightness_init(struct ibm_init_struct *iibm) |
| { |
| int b; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); |
| |
| mutex_init(&brightness_mutex); |
| |
| /* |
| * We always attempt to detect acpi support, so as to switch |
| * Lenovo Vista BIOS to ACPI brightness mode even if we are not |
| * going to publish a backlight interface |
| */ |
| b = tpacpi_check_std_acpi_brightness_support(); |
| if (b > 0) { |
| |
| if (acpi_video_backlight_support()) { |
| if (brightness_enable > 1) { |
| printk(TPACPI_NOTICE |
| "Standard ACPI backlight interface " |
| "available, not loading native one.\n"); |
| return 1; |
| } else if (brightness_enable == 1) { |
| printk(TPACPI_NOTICE |
| "Backlight control force enabled, even if standard " |
| "ACPI backlight interface is available\n"); |
| } |
| } else { |
| if (brightness_enable > 1) { |
| printk(TPACPI_NOTICE |
| "Standard ACPI backlight interface not " |
| "available, thinkpad_acpi native " |
| "brightness control enabled\n"); |
| } |
| } |
| } |
| |
| if (!brightness_enable) { |
| dbg_printk(TPACPI_DBG_INIT, |
| "brightness support disabled by " |
| "module parameter\n"); |
| return 1; |
| } |
| |
| if (b > 16) { |
| printk(TPACPI_ERR |
| "Unsupported brightness interface, " |
| "please contact %s\n", TPACPI_MAIL); |
| return 1; |
| } |
| if (b == 16) |
| tp_features.bright_16levels = 1; |
| |
| if (!brightness_mode) { |
| if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) |
| brightness_mode = 2; |
| else |
| brightness_mode = 3; |
| |
| dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n", |
| brightness_mode); |
| } |
| |
| if (brightness_mode > 3) |
| return -EINVAL; |
| |
| if (brightness_get_raw(&b) < 0) |
| return 1; |
| |
| if (tp_features.bright_16levels) |
| printk(TPACPI_INFO |
| "detected a 16-level brightness capable ThinkPad\n"); |
| |
| ibm_backlight_device = backlight_device_register( |
| TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL, |
| &ibm_backlight_data); |
| if (IS_ERR(ibm_backlight_device)) { |
| printk(TPACPI_ERR "Could not register backlight device\n"); |
| return PTR_ERR(ibm_backlight_device); |
| } |
| vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n"); |
| |
| ibm_backlight_device->props.max_brightness = |
| (tp_features.bright_16levels)? 15 : 7; |
| ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; |
| backlight_update_status(ibm_backlight_device); |
| |
| return 0; |
| } |
| |
| static void brightness_exit(void) |
| { |
| if (ibm_backlight_device) { |
| vdbg_printk(TPACPI_DBG_EXIT, |
| "calling backlight_device_unregister()\n"); |
| backlight_device_unregister(ibm_backlight_device); |
| } |
| } |
| |
| static int brightness_read(char *p) |
| { |
| int len = 0; |
| int level; |
| |
| level = brightness_get(NULL); |
| if (level < 0) { |
| len += sprintf(p + len, "level:\t\tunreadable\n"); |
| } else { |
| len += sprintf(p + len, "level:\t\t%d\n", level); |
| len += sprintf(p + len, "commands:\tup, down\n"); |
| len += sprintf(p + len, "commands:\tlevel <level>" |
| " (<level> is 0-%d)\n", |
| (tp_features.bright_16levels) ? 15 : 7); |
| } |
| |
| return len; |
| } |
| |
| static int brightness_write(char *buf) |
| { |
| int level; |
| int rc; |
| char *cmd; |
| int max_level = (tp_features.bright_16levels) ? 15 : 7; |
| |
| level = brightness_get(NULL); |
| if (level < 0) |
| return level; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (strlencmp(cmd, "up") == 0) { |
| if (level < max_level) |
| level++; |
| } else if (strlencmp(cmd, "down") == 0) { |
| if (level > 0) |
| level--; |
| } else if (sscanf(cmd, "level %d", &level) == 1 && |
| level >= 0 && level <= max_level) { |
| /* new level set */ |
| } else |
| return -EINVAL; |
| } |
| |
| /* |
| * Now we know what the final level should be, so we try to set it. |
| * Doing it this way makes the syscall restartable in case of EINTR |
| */ |
| rc = brightness_set(level); |
| return (rc == -EINTR)? ERESTARTSYS : rc; |
| } |
| |
| static struct ibm_struct brightness_driver_data = { |
| .name = "brightness", |
| .read = brightness_read, |
| .write = brightness_write, |
| .exit = brightness_exit, |
| }; |
| |
| /************************************************************************* |
| * Volume subdriver |
| */ |
| |
| static int volume_offset = 0x30; |
| |
| static int volume_read(char *p) |
| { |
| int len = 0; |
| u8 level; |
| |
| if (!acpi_ec_read(volume_offset, &level)) { |
| len += sprintf(p + len, "level:\t\tunreadable\n"); |
| } else { |
| len += sprintf(p + len, "level:\t\t%d\n", level & 0xf); |
| len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6)); |
| len += sprintf(p + len, "commands:\tup, down, mute\n"); |
| len += sprintf(p + len, "commands:\tlevel <level>" |
| " (<level> is 0-15)\n"); |
| } |
| |
| return len; |
| } |
| |
| static int volume_write(char *buf) |
| { |
| int cmos_cmd, inc, i; |
| u8 level, mute; |
| int new_level, new_mute; |
| char *cmd; |
| |
| while ((cmd = next_cmd(&buf))) { |
| if (!acpi_ec_read(volume_offset, &level)) |
| return -EIO; |
| new_mute = mute = level & 0x40; |
| new_level = level = level & 0xf; |
| |
| if (strlencmp(cmd, "up") == 0) { |
| if (mute) |
| new_mute = 0; |
| else |
| new_level = level == 15 ? 15 : level + 1; |
| } else if (strlencmp(cmd, "down") == 0) { |
| if (mute) |
| new_mute = 0; |
| else |
| new_level = level == 0 ? 0 : level - 1; |
| } else if (sscanf(cmd, "level %d", &new_level) == 1 && |
| new_level >= 0 && new_level <= 15) { |
| /* new_level set */ |
| } else if (strlencmp(cmd, "mute") == 0) { |
| new_mute = 0x40; |
| } else |
| return -EINVAL; |
| |
| if (new_level != level) { |
| /* mute doesn't change */ |
| |
| cmos_cmd = (new_level > level) ? |
| TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN; |
| inc = new_level > level ? 1 : -1; |
| |
| if (mute && (issue_thinkpad_cmos_command(cmos_cmd) || |
| !acpi_ec_write(volume_offset, level))) |
| return -EIO; |
| |
| for (i = level; i != new_level; i += inc) |
| if (issue_thinkpad_cmos_command(cmos_cmd) || |
| !acpi_ec_write(volume_offset, i + inc)) |
| return -EIO; |
| |
| if (mute && |
| (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) || |
| !acpi_ec_write(volume_offset, new_level + mute))) { |
| return -EIO; |
| } |
| } |
| |
| if (new_mute != mute) { |
| /* level doesn't change */ |
| |
| cmos_cmd = (new_mute) ? |
| TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP; |
| |
| if (issue_thinkpad_cmos_command(cmos_cmd) || |
| !acpi_ec_write(volume_offset, level + new_mute)) |
| return -EIO; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static struct ibm_struct volume_driver_data = { |
| .name = "volume", |
| .read = volume_read, |
| .write = volume_write, |
| }; |
| |
| /************************************************************************* |
| * Fan subdriver |
| */ |
| |
| /* |
| * FAN ACCESS MODES |
| * |
| * TPACPI_FAN_RD_ACPI_GFAN: |
| * ACPI GFAN method: returns fan level |
| * |
| * see TPACPI_FAN_WR_ACPI_SFAN |
| * EC 0x2f (HFSP) not available if GFAN exists |
| * |
| * TPACPI_FAN_WR_ACPI_SFAN: |
| * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) |
| * |
| * EC 0x2f (HFSP) might be available *for reading*, but do not use |
| * it for writing. |
| * |
| * TPACPI_FAN_WR_TPEC: |
| * ThinkPad EC register 0x2f (HFSP): fan control loop mode |
| * Supported on almost all ThinkPads |
| * |
| * Fan speed changes of any sort (including those caused by the |
| * disengaged mode) are usually done slowly by the firmware as the |
| * maximum ammount of fan duty cycle change per second seems to be |
| * limited. |
| * |
| * Reading is not available if GFAN exists. |
| * Writing is not available if SFAN exists. |
| * |
| * Bits |
| * 7 automatic mode engaged; |
| * (default operation mode of the ThinkPad) |
| * fan level is ignored in this mode. |
| * 6 full speed mode (takes precedence over bit 7); |
| * not available on all thinkpads. May disable |
| * the tachometer while the fan controller ramps up |
| * the speed (which can take up to a few *minutes*). |
| * Speeds up fan to 100% duty-cycle, which is far above |
| * the standard RPM levels. It is not impossible that |
| * it could cause hardware damage. |
| * 5-3 unused in some models. Extra bits for fan level |
| * in others, but still useless as all values above |
| * 7 map to the same speed as level 7 in these models. |
| * 2-0 fan level (0..7 usually) |
| * 0x00 = stop |
| * 0x07 = max (set when temperatures critical) |
| * Some ThinkPads may have other levels, see |
| * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) |
| * |
| * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at |
| * boot. Apparently the EC does not intialize it, so unless ACPI DSDT |
| * does so, its initial value is meaningless (0x07). |
| * |
| * For firmware bugs, refer to: |
| * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues |
| * |
| * ---- |
| * |
| * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): |
| * Main fan tachometer reading (in RPM) |
| * |
| * This register is present on all ThinkPads with a new-style EC, and |
| * it is known not to be present on the A21m/e, and T22, as there is |
| * something else in offset 0x84 according to the ACPI DSDT. Other |
| * ThinkPads from this same time period (and earlier) probably lack the |
| * tachometer as well. |
| * |
| * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare |
| * was never fixed by IBM to report the EC firmware version string |
| * probably support the tachometer (like the early X models), so |
| * detecting it is quite hard. We need more data to know for sure. |
| * |
| * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings |
| * might result. |
| * |
| * FIRMWARE BUG: may go stale while the EC is switching to full speed |
| * mode. |
| * |
| * For firmware bugs, refer to: |
| * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues |
| * |
| * TPACPI_FAN_WR_ACPI_FANS: |
| * ThinkPad X31, X40, X41. Not available in the X60. |
| * |
| * FANS ACPI handle: takes three arguments: low speed, medium speed, |
| * high speed. ACPI DSDT seems to map these three speeds to levels |
| * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH |
| * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") |
| * |
| * The speeds are stored on handles |
| * (FANA:FAN9), (FANC:FANB), (FANE:FAND). |
| * |
| * There are three default speed sets, acessible as handles: |
| * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H |
| * |
| * ACPI DSDT switches which set is in use depending on various |
| * factors. |
| * |
| * TPACPI_FAN_WR_TPEC is also available and should be used to |
| * command the fan. The X31/X40/X41 seems to have 8 fan levels, |
| * but the ACPI tables just mention level 7. |
| */ |
| |
| enum { /* Fan control constants */ |
| fan_status_offset = 0x2f, /* EC register 0x2f */ |
| fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) |
| * 0x84 must be read before 0x85 */ |
| |
| TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ |
| TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ |
| |
| TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ |
| }; |
| |
| enum fan_status_access_mode { |
| TPACPI_FAN_NONE = 0, /* No fan status or control */ |
| TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ |
| TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ |
| }; |
| |
| enum fan_control_access_mode { |
| TPACPI_FAN_WR_NONE = 0, /* No fan control */ |
| TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ |
| TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ |
| TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ |
| }; |
| |
| enum fan_control_commands { |
| TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ |
| TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ |
| TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, |
| * and also watchdog cmd */ |
| }; |
| |
| static int fan_control_allowed; |
| |
| static enum fan_status_access_mode fan_status_access_mode; |
| static enum fan_control_access_mode fan_control_access_mode; |
| static enum fan_control_commands fan_control_commands; |
| |
| static u8 fan_control_initial_status; |
| static u8 fan_control_desired_level; |
| static int fan_watchdog_maxinterval; |
| |
| static struct mutex fan_mutex; |
| |
| static void fan_watchdog_fire(struct work_struct *ignored); |
| static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); |
| |
| TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ |
| TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ |
| "\\FSPD", /* 600e/x, 770e, 770x */ |
| ); /* all others */ |
| TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ |
| "JFNS", /* 770x-JL */ |
| ); /* all others */ |
| |
| /* |
| * Call with fan_mutex held |
| */ |
| static void fan_update_desired_level(u8 status) |
| { |
| if ((status & |
| (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { |
| if (status > 7) |
| fan_control_desired_level = 7; |
| else |
| fan_control_desired_level = status; |
| } |
| } |
| |
| static int fan_get_status(u8 *status) |
| { |
| u8 s; |
| |
| /* TODO: |
| * Add TPACPI_FAN_RD_ACPI_FANS ? */ |
| |
| switch (fan_status_access_mode) { |
| case TPACPI_FAN_RD_ACPI_GFAN: |
| /* 570, 600e/x, 770e, 770x */ |
| |
| if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d"))) |
| return -EIO; |
| |
| if (likely(status)) |
| *status = s & 0x07; |
| |
| break; |
| |
| case TPACPI_FAN_RD_TPEC: |
| /* all except 570, 600e/x, 770e, 770x */ |
| if (unlikely(!acpi_ec_read(fan_status_offset, &s))) |
| return -EIO; |
| |
| if (likely(status)) |
| *status = s; |
| |
| break; |
| |
| default: |
| return -ENXIO; |
| } |
| |
| return 0; |
| } |
| |
| static int fan_get_status_safe(u8 *status) |
| { |
| int rc; |
| u8 s; |
| |
| if (mutex_lock_interruptible(&fan_mutex)) |
| return -ERESTARTSYS; |
| rc = fan_get_status(&s); |
| if (!rc) |
| fan_update_desired_level(s); |
| mutex_unlock(&fan_mutex); |
| |
| if (status) |
| *status = s; |
| |
| return rc; |
| } |
| |
| static int fan_get_speed(unsigned int *speed) |
| { |
| u8 hi, lo; |
| |
| switch (fan_status_access_mode) { |
| case TPACPI_FAN_RD_TPEC: |
| /* all except 570, 600e/x, 770e, 770x */ |
| if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || |
| !acpi_ec_read(fan_rpm_offset + 1, &hi))) |
| return -EIO; |
| |
| if (likely(speed)) |
| *speed = (hi << 8) | lo; |
| |
| break; |
| |
| default: |
| return -ENXIO; |
| } |
| |
| return 0; |
| } |
| |
| static int fan_set_level(int level) |
| { |
| if (!fan_control_allowed) |
| return -EPERM; |
| |
| switch (fan_control_access_mode) { |
| case TPACPI_FAN_WR_ACPI_SFAN: |
| if (level >= 0 && level <= 7) { |
| if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) |
| return -EIO; |
| } else |
| return -EINVAL; |
| break; |
| |
| case TPACPI_FAN_WR_ACPI_FANS: |
| case TPACPI_FAN_WR_TPEC: |
| if ((level != TP_EC_FAN_AUTO) && |
| (level != TP_EC_FAN_FULLSPEED) && |
| ((level < 0) || (level > 7))) |
| return -EINVAL; |
| |
| /* safety net should the EC not support AUTO |
| * or FULLSPEED mode bits and just ignore them */ |
| if (level & TP_EC_FAN_FULLSPEED) |
| level |= 7; /* safety min speed 7 */ |
| else if (level & TP_EC_FAN_AUTO) |
| level |= 4; /* safety min speed 4 */ |
| |
| if (!acpi_ec_write(fan_status_offset, level)) |
| return -EIO; |
| else |
| tp_features.fan_ctrl_status_undef = 0; |
| break; |
| |
| default: |
| return -ENXIO; |
| } |
| return 0; |
| } |
| |
| static int fan_set_level_safe(int level) |
| { |
| int rc; |
| |
| if (!fan_control_allowed) |
| return -EPERM; |
| |
| if (mutex_lock_interruptible(&fan_mutex)) |
| return -ERESTARTSYS; |
| |
| if (level == TPACPI_FAN_LAST_LEVEL) |
| level = fan_control_desired_level; |
| |
| rc = fan_set_level(level); |
| if (!rc) |
| fan_update_desired_level(level); |
| |
| mutex_unlock(&fan_mutex); |
| return rc; |
| } |
| |
| static int fan_set_enable(void) |
| { |
| u8 s; |
| int rc; |
| |
| if (!fan_control_allowed) |
| return -EPERM; |
| |
| if (mutex_lock_interruptible(&fan_mutex)) |
| return -ERESTARTSYS; |
| |
| switch (fan_control_access_mode) { |
| case TPACPI_FAN_WR_ACPI_FANS: |
| case TPACPI_FAN_WR_TPEC: |
| rc = fan_get_status(&s); |
| if (rc < 0) |
| break; |
| |
| /* Don't go out of emergency fan mode */ |
| if (s != 7) { |
| s &= 0x07; |
| s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ |
| } |
| |
| if (!acpi_ec_write(fan_status_offset, s)) |
| rc = -EIO; |
| else { |
| tp_features.fan_ctrl_status_undef = 0; |
| rc = 0; |
| } |
| break; |
| |
| case TPACPI_FAN_WR_ACPI_SFAN: |
| rc = fan_get_status(&s); |
| if (rc < 0) |
| break; |
| |
| s &= 0x07; |
| |
| /* Set fan to at least level 4 */ |
| s |= 4; |
| |
| if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) |
| rc = -EIO; |
| else |
| rc = 0; |
| break; |
| |
| default: |
| rc = -ENXIO; |
| } |
| |
| mutex_unlock(&fan_mutex); |
| return rc; |
| } |
| |
| static int fan_set_disable(void) |
| { |
| int rc; |
| |
| if (!fan_control_allowed) |
| return -EPERM; |
| |
| if (mutex_lock_interruptible(&fan_mutex)) |
| return -ERESTARTSYS; |
| |
| rc = 0; |
| switch (fan_control_access_mode) { |
| case TPACPI_FAN_WR_ACPI_FANS: |
| case TPACPI_FAN_WR_TPEC: |
| if (!acpi_ec_write(fan_status_offset, 0x00)) |
| rc = -EIO; |
| else { |
| fan_control_desired_level = 0; |
| tp_features.fan_ctrl_status_undef = 0; |
| } |
| break; |
| |
| case TPACPI_FAN_WR_ACPI_SFAN: |
| if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) |
| rc = -EIO; |
| else |
| fan_control_desired_level = 0; |
| break; |
| |
| default: |
| rc = -ENXIO; |
| } |
| |
| |
| mutex_unlock(&fan_mutex); |
| return rc; |
| } |
| |
| static int fan_set_speed(int speed) |
| { |
| int rc; |
| |
| if (!fan_control_allowed) |
| return -EPERM; |
| |
| if (mutex_lock_interruptible(&fan_mutex)) |
| return -ERESTARTSYS; |
| |
| rc = 0; |
| switch (fan_control_access_mode) { |
| case TPACPI_FAN_WR_ACPI_FANS: |
| if (speed >= 0 && speed <= 65535) { |
| if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", |
| speed, speed, speed)) |
| rc = -EIO; |
| } else |
| rc = -EINVAL; |
| break; |
| |
| default: |
| rc = -ENXIO; |
| } |
| |
| mutex_unlock(&fan_mutex); |
| return rc; |
| } |
| |
| static void fan_watchdog_reset(void) |
| { |
| static int fan_watchdog_active; |
| |
| if (fan_control_access_mode == TPACPI_FAN_WR_NONE) |
| return; |
| |
| if (fan_watchdog_active) |
| cancel_delayed_work(&fan_watchdog_task); |
| |
| if (fan_watchdog_maxinterval > 0 && |
| tpacpi_lifecycle != TPACPI_LIFE_EXITING) { |
| fan_watchdog_active = 1; |
| if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task, |
| msecs_to_jiffies(fan_watchdog_maxinterval |
| * 1000))) { |
| printk(TPACPI_ERR |
| "failed to queue the fan watchdog, " |
| "watchdog will not trigger\n"); |
| } |
| } else |
| fan_watchdog_active = 0; |
| } |
| |
| static void fan_watchdog_fire(struct work_struct *ignored) |
| { |
| int rc; |
| |
| if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) |
| return; |
| |
| printk(TPACPI_NOTICE "fan watchdog: enabling fan\n"); |
| rc = fan_set_enable(); |
| if (rc < 0) { |
| printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, " |
| "will try again later...\n", -rc); |
| /* reschedule for later */ |
| fan_watchdog_reset(); |
| } |
| } |
| |
| /* |
| * SYSFS fan layout: hwmon compatible (device) |
| * |
| * pwm*_enable: |
| * 0: "disengaged" mode |
| * 1: manual mode |
| * 2: native EC "auto" mode (recommended, hardware default) |
| * |
| * pwm*: set speed in manual mode, ignored otherwise. |
| * 0 is level 0; 255 is level 7. Intermediate points done with linear |
| * interpolation. |
| * |
| * fan*_input: tachometer reading, RPM |
| * |
| * |
| * SYSFS fan layout: extensions |
| * |
| * fan_watchdog (driver): |
| * fan watchdog interval in seconds, 0 disables (default), max 120 |
| */ |
| |
| /* sysfs fan pwm1_enable ----------------------------------------------- */ |
| static ssize_t fan_pwm1_enable_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res, mode; |
| u8 status; |
| |
| res = fan_get_status_safe(&status); |
| if (res) |
| return res; |
| |
| if (unlikely(tp_features.fan_ctrl_status_undef)) { |
| if (status != fan_control_initial_status) { |
| tp_features.fan_ctrl_status_undef = 0; |
| } else { |
| /* Return most likely status. In fact, it |
| * might be the only possible status */ |
| status = TP_EC_FAN_AUTO; |
| } |
| } |
| |
| if (status & TP_EC_FAN_FULLSPEED) { |
| mode = 0; |
| } else if (status & TP_EC_FAN_AUTO) { |
| mode = 2; |
| } else |
| mode = 1; |
| |
| return snprintf(buf, PAGE_SIZE, "%d\n", mode); |
| } |
| |
| static ssize_t fan_pwm1_enable_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| int res, level; |
| |
| if (parse_strtoul(buf, 2, &t)) |
| return -EINVAL; |
| |
| switch (t) { |
| case 0: |
| level = TP_EC_FAN_FULLSPEED; |
| break; |
| case 1: |
| level = TPACPI_FAN_LAST_LEVEL; |
| break; |
| case 2: |
| level = TP_EC_FAN_AUTO; |
| break; |
| case 3: |
| /* reserved for software-controlled auto mode */ |
| return -ENOSYS; |
| default: |
| return -EINVAL; |
| } |
| |
| res = fan_set_level_safe(level); |
| if (res == -ENXIO) |
| return -EINVAL; |
| else if (res < 0) |
| return res; |
| |
| fan_watchdog_reset(); |
| |
| return count; |
| } |
| |
| static struct device_attribute dev_attr_fan_pwm1_enable = |
| __ATTR(pwm1_enable, S_IWUSR | S_IRUGO, |
| fan_pwm1_enable_show, fan_pwm1_enable_store); |
| |
| /* sysfs fan pwm1 ------------------------------------------------------ */ |
| static ssize_t fan_pwm1_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res; |
| u8 status; |
| |
| res = fan_get_status_safe(&status); |
| if (res) |
| return res; |
| |
| if (unlikely(tp_features.fan_ctrl_status_undef)) { |
| if (status != fan_control_initial_status) { |
| tp_features.fan_ctrl_status_undef = 0; |
| } else { |
| status = TP_EC_FAN_AUTO; |
| } |
| } |
| |
| if ((status & |
| (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) |
| status = fan_control_desired_level; |
| |
| if (status > 7) |
| status = 7; |
| |
| return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); |
| } |
| |
| static ssize_t fan_pwm1_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| unsigned long s; |
| int rc; |
| u8 status, newlevel; |
| |
| if (parse_strtoul(buf, 255, &s)) |
| return -EINVAL; |
| |
| /* scale down from 0-255 to 0-7 */ |
| newlevel = (s >> 5) & 0x07; |
| |
| if (mutex_lock_interruptible(&fan_mutex)) |
| return -ERESTARTSYS; |
| |
| rc = fan_get_status(&status); |
| if (!rc && (status & |
| (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { |
| rc = fan_set_level(newlevel); |
| if (rc == -ENXIO) |
| rc = -EINVAL; |
| else if (!rc) { |
| fan_update_desired_level(newlevel); |
| fan_watchdog_reset(); |
| } |
| } |
| |
| mutex_unlock(&fan_mutex); |
| return (rc)? rc : count; |
| } |
| |
| static struct device_attribute dev_attr_fan_pwm1 = |
| __ATTR(pwm1, S_IWUSR | S_IRUGO, |
| fan_pwm1_show, fan_pwm1_store); |
| |
| /* sysfs fan fan1_input ------------------------------------------------ */ |
| static ssize_t fan_fan1_input_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int res; |
| unsigned int speed; |
| |
| res = fan_get_speed(&speed); |
| if (res < 0) |
| return res; |
| |
| return snprintf(buf, PAGE_SIZE, "%u\n", speed); |
| } |
| |
| static struct device_attribute dev_attr_fan_fan1_input = |
| __ATTR(fan1_input, S_IRUGO, |
| fan_fan1_input_show, NULL); |
| |
| /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ |
| static ssize_t fan_fan_watchdog_show(struct device_driver *drv, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); |
| } |
| |
| static ssize_t fan_fan_watchdog_store(struct device_driver *drv, |
| const char *buf, size_t count) |
| { |
| unsigned long t; |
| |
| if (parse_strtoul(buf, 120, &t)) |
| return -EINVAL; |
| |
| if (!fan_control_allowed) |
| return -EPERM; |
| |
| fan_watchdog_maxinterval = t; |
| fan_watchdog_reset(); |
| |
| return count; |
| } |
| |
| static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO, |
| fan_fan_watchdog_show, fan_fan_watchdog_store); |
| |
| /* --------------------------------------------------------------------- */ |
| static struct attribute *fan_attributes[] = { |
| &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr, |
| &dev_attr_fan_fan1_input.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group fan_attr_group = { |
| .attrs = fan_attributes, |
| }; |
| |
| static int __init fan_init(struct ibm_init_struct *iibm) |
| { |
| int rc; |
| |
| vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n"); |
| |
| mutex_init(&fan_mutex); |
| fan_status_access_mode = TPACPI_FAN_NONE; |
| fan_control_access_mode = TPACPI_FAN_WR_NONE; |
| fan_control_commands = 0; |
| fan_watchdog_maxinterval = 0; |
| tp_features.fan_ctrl_status_undef = 0; |
| fan_control_desired_level = 7; |
| |
| TPACPI_ACPIHANDLE_INIT(fans); |
| TPACPI_ACPIHANDLE_INIT(gfan); |
| TPACPI_ACPIHANDLE_INIT(sfan); |
| |
| if (gfan_handle) { |
| /* 570, 600e/x, 770e, 770x */ |
| fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; |
| } else { |
| /* all other ThinkPads: note that even old-style |
| * ThinkPad ECs supports the fan control register */ |
| if (likely(acpi_ec_read(fan_status_offset, |
| &fan_control_initial_status))) { |
| fan_status_access_mode = TPACPI_FAN_RD_TPEC; |
| |
| /* In some ThinkPads, neither the EC nor the ACPI |
| * DSDT initialize the fan status, and it ends up |
| * being set to 0x07 when it *could* be either |
| * 0x07 or 0x80. |
| * |
| * Enable for TP-1Y (T43), TP-78 (R51e), |
| * TP-76 (R52), TP-70 (T43, R52), which are known |
| * to be buggy. */ |
| if (fan_control_initial_status == 0x07) { |
| switch (thinkpad_id.ec_model) { |
| case 0x5931: /* TP-1Y */ |
| case 0x3837: /* TP-78 */ |
| case 0x3637: /* TP-76 */ |
| case 0x3037: /* TP-70 */ |
| printk(TPACPI_NOTICE |
| "fan_init: initial fan status " |
| "is unknown, assuming it is " |
| "in auto mode\n"); |
| tp_features.fan_ctrl_status_undef = 1; |
| ;; |
| } |
| } |
| } else { |
| printk(TPACPI_ERR |
| "ThinkPad ACPI EC access misbehaving, " |
| "fan status and control unavailable\n"); |
| return 1; |
| } |
| } |
| |
| if (sfan_handle) { |
| /* 570, 770x-JL */ |
| fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; |
| fan_control_commands |= |
| TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; |
| } else { |
| if (!gfan_handle) { |
| /* gfan without sfan means no fan control */ |
| /* all other models implement TP EC 0x2f control */ |
| |
| if (fans_handle) { |
| /* X31, X40, X41 */ |
| fan_control_access_mode = |
| TPACPI_FAN_WR_ACPI_FANS; |
| fan_control_commands |= |
| TPACPI_FAN_CMD_SPEED | |
| TPACPI_FAN_CMD_LEVEL | |
| TPACPI_FAN_CMD_ENABLE; |
| } else { |
| fan_control_access_mode = TPACPI_FAN_WR_TPEC; |
| fan_control_commands |= |
| TPACPI_FAN_CMD_LEVEL | |
| TPACPI_FAN_CMD_ENABLE; |
| } |
| } |
| } |
| |
| vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n", |
| str_supported(fan_status_access_mode != TPACPI_FAN_NONE || |
| fan_control_access_mode != TPACPI_FAN_WR_NONE), |
| fan_status_access_mode, fan_control_access_mode); |
| |
| /* fan control master switch */ |
| if (!fan_control_allowed) { |
| fan_control_access_mode = TPACPI_FAN_WR_NONE; |
| fan_control_commands = 0; |
| dbg_printk(TPACPI_DBG_INIT, |
| "fan control features disabled by parameter\n"); |
| } |
| |
| /* update fan_control_desired_level */ |
| if (fan_status_access_mode != TPACPI_FAN_NONE) |
| fan_get_status_safe(NULL); |
| |
| if (fan_status_access_mode != TPACPI_FAN_NONE || |
| fan_control_access_mode != TPACPI_FAN_WR_NONE) { |
| rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, |
| &fan_attr_group); |
| if (rc < 0) |
| return rc; |
| |
| rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, |
| &driver_attr_fan_watchdog); |
| if (rc < 0) { |
| sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, |
| &fan_attr_group); |
| return rc; |
| } |
| return 0; |
| } else |
| return 1; |
| } |
| |
| static void fan_exit(void) |
| { |
| vdbg_printk(TPACPI_DBG_EXIT, |
| "cancelling any pending fan watchdog tasks\n"); |
| |
| /* FIXME: can we really do this unconditionally? */ |
| sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group); |
| driver_remove_file(&tpacpi_hwmon_pdriver.driver, |
| &driver_attr_fan_watchdog); |
| |
| cancel_delayed_work(&fan_watchdog_task); |
| flush_workqueue(tpacpi_wq); |
| } |
| |
| static void fan_suspend(pm_message_t state) |
| { |
| if (!fan_control_allowed) |
| return; |
| |
| /* Store fan status in cache */ |
| fan_get_status_safe(NULL); |
| if (tp_features.fan_ctrl_status_undef) |
| fan_control_desired_level = TP_EC_FAN_AUTO; |
| } |
| |
| static void fan_resume(void) |
| { |
| u8 saved_fan_level; |
| u8 current_level = 7; |
| bool do_set = false; |
| |
| /* DSDT *always* updates status on resume */ |
| tp_features.fan_ctrl_status_undef = 0; |
| |
| saved_fan_level = fan_control_desired_level; |
| if (!fan_control_allowed || |
| (fan_get_status_safe(¤t_level) < 0)) |
| return; |
| |
| switch (fan_control_access_mode) { |
| case TPACPI_FAN_WR_ACPI_SFAN: |
| do_set = (saved_fan_level > current_level); |
| break; |
| case TPACPI_FAN_WR_ACPI_FANS: |
| case TPACPI_FAN_WR_TPEC: |
| do_set = ((saved_fan_level & TP_EC_FAN_FULLSPEED) || |
| (saved_fan_level == 7 && |
| !(current_level & TP_EC_FAN_FULLSPEED))); |
| break; |
| default: |
| return; |
| } |
| if (do_set) { |
| printk(TPACPI_NOTICE |
| "restoring fan level to 0x%02x\n", |
| saved_fan_level); |
| fan_set_level_safe(saved_fan_level); |
| } |
| } |
| |
| static int fan_read(char *p) |
| { |
| int len = 0; |
| int rc; |
| u8 status; |
| unsigned int speed = 0; |
| |
| switch (fan_status_access_mode) { |
| case TPACPI_FAN_RD_ACPI_GFAN: |
| /* 570, 600e/x, 770e, 770x */ |
| rc = fan_get_status_safe(&status); |
| if (rc < 0) |
| return rc; |
| |
| len += sprintf(p + len, "status:\t\t%s\n" |
| "level:\t\t%d\n", |
| (status != 0) ? "enabled" : "disabled", status); |
| break; |
| |
| case TPACPI_FAN_RD_TPEC: |
| /* all except 570, 600e/x, 770e, 770x */ |
| rc = fan_get_status_safe(&status); |
| if (rc < 0) |
| return rc; |
| |
| if (unlikely(tp_features.fan_ctrl_status_undef)) { |
| if (status != fan_control_initial_status) |
| tp_features.fan_ctrl_status_undef = 0; |
| else |
| /* Return most likely status. In fact, it |
| * might be the only possible status */ |
| status = TP_EC_FAN_AUTO; |
| } |
| |
| len += sprintf(p + len, "status:\t\t%s\n", |
| (status != 0) ? "enabled" : "disabled"); |
| |
| rc = fan_get_speed(&speed); |
| if (rc < 0) |
| return rc; |
| |
| len += sprintf(p + len, "speed:\t\t%d\n", speed); |
| |
| if (status & TP_EC_FAN_FULLSPEED) |
| /* Disengaged mode takes precedence */ |
| len += sprintf(p + len, "level:\t\tdisengaged\n"); |
| else if (status & TP_EC_FAN_AUTO) |
| len += sprintf(p + len, "level:\t\tauto\n"); |
| else |
| len += sprintf(p + len, "level:\t\t%d\n", status); |
| break; |
| |
| case TPACPI_FAN_NONE: |
| default: |
| len += sprintf(p + len, "status:\t\tnot supported\n"); |
| } |
| |
| if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { |
| len += sprintf(p + len, "commands:\tlevel <level>"); |
| |
| switch (fan_control_access_mode) { |
| case TPACPI_FAN_WR_ACPI_SFAN: |
| len += sprintf(p + len, " (<level> is 0-7)\n"); |
| break; |
| |
| default: |
| len += sprintf(p + len, " (<level> is 0-7, " |
| "auto, disengaged, full-speed)\n"); |
| break; |
| } |
| } |
| |
| if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) |
| len += sprintf(p + len, "commands:\tenable, disable\n" |
| "commands:\twatchdog <timeout> (<timeout> " |
| "is 0 (off), 1-120 (seconds))\n"); |
| |
| if (fan_control_commands & TPACPI_FAN_CMD_SPEED) |
| len += sprintf(p + len, "commands:\tspeed <speed>" |
| " (<speed> is 0-65535)\n"); |
| |
| return len; |
| } |
| |
| static int fan_write_cmd_level(const char *cmd, int *rc) |
| { |
| int level; |
| |
| if (strlencmp(cmd, "level auto") == 0) |
| level = TP_EC_FAN_AUTO; |
| else if ((strlencmp(cmd, "level disengaged") == 0) | |
| (strlencmp(cmd, "level full-speed") == 0)) |
| level = TP_EC_FAN_FULLSPEED; |
| else if (sscanf(cmd, "level %d", &level) != 1) |
| return 0; |
| |
| *rc = fan_set_level_safe(level); |
| if (*rc == -ENXIO) |
| printk(TPACPI_ERR "level command accepted for unsupported " |
| "access mode %d", fan_control_access_mode); |
| |
| return 1; |
| } |
| |
| static int fan_write_cmd_enable(const char *cmd, int *rc) |
| { |
| if (strlencmp(cmd, "enable") != 0) |
| return 0; |
| |
| *rc = fan_set_enable(); |
| if (*rc == -ENXIO) |
| printk(TPACPI_ERR "enable command accepted for unsupported " |
| "access mode %d", fan_control_access_mode); |
| |
| return 1; |
| } |
| |
| static int fan_write_cmd_disable(const char *cmd, int *rc) |
| { |
| if (strlencmp(cmd, "disable") != 0) |
| return 0; |
| |
| *rc = fan_set_disable(); |
| if (*rc == -ENXIO) |
| printk(TPACPI_ERR "disable command accepted for unsupported " |
| "access mode %d", fan_control_access_mode); |
| |
| return 1; |
| } |
| |
| static int fan_write_cmd_speed(const char *cmd, int *rc) |
| { |
| int speed; |
| |
| /* TODO: |
| * Support speed <low> <medium> <high> ? */ |
| |
| if (sscanf(cmd, "speed %d", &speed) != 1) |
| return 0; |
| |
| *rc = fan_set_speed(speed); |
| if (*rc == -ENXIO) |
| printk(TPACPI_ERR "speed command accepted for unsupported " |
| "access mode %d", fan_control_access_mode); |
| |
| return 1; |
| } |
| |
| static int fan_write_cmd_watchdog(const char *cmd, int *rc) |
| { |
| int interval; |
| |
| if (sscanf(cmd, "watchdog %d", &interval) != 1) |
| return 0; |
| |
| if (interval < 0 || interval > 120) |
| *rc = -EINVAL; |
| else |
| fan_watchdog_maxinterval = interval; |
| |
| return 1; |
| } |
| |
| static int fan_write(char *buf) |
| { |
| char *cmd; |
| int rc = 0; |
| |
| while (!rc && (cmd = next_cmd(&buf))) { |
| if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && |
| fan_write_cmd_level(cmd, &rc)) && |
| !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && |
| (fan_write_cmd_enable(cmd, &rc) || |
| fan_write_cmd_disable(cmd, &rc) || |
| fan_write_cmd_watchdog(cmd, &rc))) && |
| !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && |
| fan_write_cmd_speed(cmd, &rc)) |
| ) |
| rc = -EINVAL; |
| else if (!rc) |
| fan_watchdog_reset(); |
| } |
| |
| return rc; |
| } |
| |
| static struct ibm_struct fan_driver_data = { |
| .name = "fan", |
| .read = fan_read, |
| .write = fan_write, |
| .exit = fan_exit, |
| .suspend = fan_suspend, |
| .resume = fan_resume, |
| }; |
| |
| /**************************************************************************** |
| **************************************************************************** |
| * |
| * Infrastructure |
| * |
| **************************************************************************** |
| ****************************************************************************/ |
| |
| /* sysfs name ---------------------------------------------------------- */ |
| static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME); |
| } |
| |
| static struct device_attribute dev_attr_thinkpad_acpi_pdev_name = |
| __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL); |
| |
| /* --------------------------------------------------------------------- */ |
| |
| /* /proc support */ |
| static struct proc_dir_entry *proc_dir; |
| |
| /* |
| * Module and infrastructure proble, init and exit handling |
| */ |
| |
| static int force_load; |
| |
| #ifdef CONFIG_THINKPAD_ACPI_DEBUG |
| static const char * __init str_supported(int is_supported) |
| { |
| static char text_unsupported[] __initdata = "not supported"; |
| |
| return (is_supported)? &text_unsupported[4] : &text_unsupported[0]; |
| } |
| #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ |
| |
| static void ibm_exit(struct ibm_struct *ibm) |
| { |
| dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); |
| |
| list_del_init(&ibm->all_drivers); |
| |
| if (ibm->flags.acpi_notify_installed) { |
| dbg_printk(TPACPI_DBG_EXIT, |
| "%s: acpi_remove_notify_handler\n", ibm->name); |
| BUG_ON(!ibm->acpi); |
| acpi_remove_notify_handler(*ibm->acpi->handle, |
| ibm->acpi->type, |
| dispatch_acpi_notify); |
| ibm->flags.acpi_notify_installed = 0; |
| ibm->flags.acpi_notify_installed = 0; |
| } |
| |
| if (ibm->flags.proc_created) { |
| dbg_printk(TPACPI_DBG_EXIT, |
| "%s: remove_proc_entry\n", ibm->name); |
| remove_proc_entry(ibm->name, proc_dir); |
| ibm->flags.proc_created = 0; |
| } |
| |
| if (ibm->flags.acpi_driver_registered) { |
| dbg_printk(TPACPI_DBG_EXIT, |
| "%s: acpi_bus_unregister_driver\n", ibm->name); |
| BUG_ON(!ibm->acpi); |
| acpi_bus_unregister_driver(ibm->acpi->driver); |
| kfree(ibm->acpi->driver); |
| ibm->acpi->driver = NULL; |
| ibm->flags.acpi_driver_registered = 0; |
| } |
| |
| if (ibm->flags.init_called && ibm->exit) { |
| ibm->exit(); |
| ibm->flags.init_called = 0; |
| } |
| |
| dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); |
| } |
| |
| static int __init ibm_init(struct ibm_init_struct *iibm) |
| { |
| int ret; |
| struct ibm_struct *ibm = iibm->data; |
| struct proc_dir_entry *entry; |
| |
| BUG_ON(ibm == NULL); |
| |
| INIT_LIST_HEAD(&ibm->all_drivers); |
| |
| if (ibm->flags.experimental && !experimental) |
| return 0; |
| |
| dbg_printk(TPACPI_DBG_INIT, |
| "probing for %s\n", ibm->name); |
| |
| if (iibm->init) { |
| ret = iibm->init(iibm); |
| if (ret > 0) |
| return 0; /* probe failed */ |
| if (ret) |
| return ret; |
| |
| ibm->flags.init_called = 1; |
| } |
| |
| if (ibm->acpi) { |
| if (ibm->acpi->hid) { |
| ret = register_tpacpi_subdriver(ibm); |
| if (ret) |
| goto err_out; |
| } |
| |
| if (ibm->acpi->notify) { |
| ret = setup_acpi_notify(ibm); |
| if (ret == -ENODEV) { |
| printk(TPACPI_NOTICE "disabling subdriver %s\n", |
| ibm->name); |
| ret = 0; |
| goto err_out; |
| } |
| if (ret < 0) |
| goto err_out; |
| } |
| } |
| |
| dbg_printk(TPACPI_DBG_INIT, |
| "%s installed\n", ibm->name); |
| |
| if (ibm->read) { |
| entry = create_proc_entry(ibm->name, |
| S_IFREG | S_IRUGO | S_IWUSR, |
| proc_dir); |
| if (!entry) { |
| printk(TPACPI_ERR "unable to create proc entry %s\n", |
| ibm->name); |
| ret = -ENODEV; |
| goto err_out; |
| } |
| entry->owner = THIS_MODULE; |
| entry->data = ibm; |
| entry->read_proc = &dispatch_procfs_read; |
| if (ibm->write) |
| entry->write_proc = &dispatch_procfs_write; |
| ibm->flags.proc_created = 1; |
| } |
| |
| list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); |
| |
| return 0; |
| |
| err_out: |
| dbg_printk(TPACPI_DBG_INIT, |
| "%s: at error exit path with result %d\n", |
| ibm->name, ret); |
| |
| ibm_exit(ibm); |
| return (ret < 0)? ret : 0; |
| } |
| |
| /* Probing */ |
| |
| /* returns 0 - probe ok, or < 0 - probe error. |
| * Probe ok doesn't mean thinkpad found. |
| * On error, kfree() cleanup on tp->* is not performed, caller must do it */ |
| static int __must_check __init get_thinkpad_model_data( |
| struct thinkpad_id_data *tp) |
| { |
| const struct dmi_device *dev = NULL; |
| char ec_fw_string[18]; |
| char const *s; |
| |
| if (!tp) |
| return -EINVAL; |
| |
| memset(tp, 0, sizeof(*tp)); |
| |
| if (dmi_name_in_vendors("IBM")) |
| tp->vendor = PCI_VENDOR_ID_IBM; |
| else if (dmi_name_in_vendors("LENOVO")) |
| tp->vendor = PCI_VENDOR_ID_LENOVO; |
| else |
| return 0; |
| |
| s = dmi_get_system_info(DMI_BIOS_VERSION); |
| tp->bios_version_str = kstrdup(s, GFP_KERNEL); |
| if (s && !tp->bios_version_str) |
| return -ENOMEM; |
| if (!tp->bios_version_str) |
| return 0; |
| tp->bios_model = tp->bios_version_str[0] |
| | (tp->bios_version_str[1] << 8); |
| |
| /* |
| * ThinkPad T23 or newer, A31 or newer, R50e or newer, |
| * X32 or newer, all Z series; Some models must have an |
| * up-to-date BIOS or they will not be detected. |
| * |
| * See http://thinkwiki.org/wiki/List_of_DMI_IDs |
| */ |
| while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { |
| if (sscanf(dev->name, |
| "IBM ThinkPad Embedded Controller -[%17c", |
| ec_fw_string) == 1) { |
| ec_fw_string[sizeof(ec_fw_string) - 1] = 0; |
| ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; |
| |
| tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); |
| if (!tp->ec_version_str) |
| return -ENOMEM; |
| tp->ec_model = ec_fw_string[0] |
| | (ec_fw_string[1] << 8); |
| break; |
| } |
| } |
| |
| s = dmi_get_system_info(DMI_PRODUCT_VERSION); |
| if (s && !strnicmp(s, "ThinkPad", 8)) { |
| tp->model_str = kstrdup(s, GFP_KERNEL); |
| if (!tp->model_str) |
| return -ENOMEM; |
| } |
| |
| s = dmi_get_system_info(DMI_PRODUCT_NAME); |
| tp->nummodel_str = kstrdup(s, GFP_KERNEL); |
| if (s && !tp->nummodel_str) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| static int __init probe_for_thinkpad(void) |
| { |
| int is_thinkpad; |
| |
| if (acpi_disabled) |
| return -ENODEV; |
| |
| /* |
| * Non-ancient models have better DMI tagging, but very old models |
| * don't. |
| */ |
| is_thinkpad = (thinkpad_id.model_str != NULL); |
| |
| /* ec is required because many other handles are relative to it */ |
| TPACPI_ACPIHANDLE_INIT(ec); |
| if (!ec_handle) { |
| if (is_thinkpad) |
| printk(TPACPI_ERR |
| "Not yet supported ThinkPad detected!\n"); |
| return -ENODEV; |
| } |
| |
| /* |
| * Risks a regression on very old machines, but reduces potential |
| * false positives a damn great deal |
| */ |
| if (!is_thinkpad) |
| is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM); |
| |
| if (!is_thinkpad && !force_load) |
| return -ENODEV; |
| |
| return 0; |
| } |
| |
| |
| /* Module init, exit, parameters */ |
| |
| static struct ibm_init_struct ibms_init[] __initdata = { |
| { |
| .init = thinkpad_acpi_driver_init, |
| .data = &thinkpad_acpi_driver_data, |
| }, |
| { |
| .init = hotkey_init, |
| .data = &hotkey_driver_data, |
| }, |
| { |
| .init = bluetooth_init, |
| .data = &bluetooth_driver_data, |
| }, |
| { |
| .init = wan_init, |
| .data = &wan_driver_data, |
| }, |
| #ifdef CONFIG_THINKPAD_ACPI_VIDEO |
| { |
| .init = video_init, |
| .data = &video_driver_data, |
| }, |
| #endif |
| { |
| .init = light_init, |
| .data = &light_driver_data, |
| }, |
| #ifdef CONFIG_THINKPAD_ACPI_DOCK |
| { |
| .init = dock_init, |
| .data = &dock_driver_data[0], |
| }, |
| { |
| .init = dock_init2, |
| .data = &dock_driver_data[1], |
| }, |
| #endif |
| #ifdef CONFIG_THINKPAD_ACPI_BAY |
| { |
| .init = bay_init, |
| .data = &bay_driver_data, |
| }, |
| #endif |
| { |
| .init = cmos_init, |
| .data = &cmos_driver_data, |
| }, |
| { |
| .init = led_init, |
| .data = &led_driver_data, |
| }, |
| { |
| .init = beep_init, |
| .data = &beep_driver_data, |
| }, |
| { |
| .init = thermal_init, |
| .data = &thermal_driver_data, |
| }, |
| { |
| .data = &ecdump_driver_data, |
| }, |
| { |
| .init = brightness_init, |
| .data = &brightness_driver_data, |
| }, |
| { |
| .data = &volume_driver_data, |
| }, |
| { |
| .init = fan_init, |
| .data = &fan_driver_data, |
| }, |
| }; |
| |
| static int __init set_ibm_param(const char *val, struct kernel_param *kp) |
| { |
| unsigned int i; |
| struct ibm_struct *ibm; |
| |
| if (!kp || !kp->name || !val) |
| return -EINVAL; |
| |
| for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { |
| ibm = ibms_init[i].data; |
| WARN_ON(ibm == NULL); |
| |
| if (!ibm || !ibm->name) |
| continue; |
| |
| if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { |
| if (strlen(val) > sizeof(ibms_init[i].param) - 2) |
| return -ENOSPC; |
| strcpy(ibms_init[i].param, val); |
| strcat(ibms_init[i].param, ","); |
| return 0; |
| } |
| } |
| |
| return -EINVAL; |
| } |
| |
| module_param(experimental, int, 0); |
| MODULE_PARM_DESC(experimental, |
| "Enables experimental features when non-zero"); |
| |
| module_param_named(debug, dbg_level, uint, 0); |
| MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); |
| |
| module_param(force_load, bool, 0); |
| MODULE_PARM_DESC(force_load, |
| "Attempts to load the driver even on a " |
| "mis-identified ThinkPad when true"); |
| |
| module_param_named(fan_control, fan_control_allowed, bool, 0); |
| MODULE_PARM_DESC(fan_control, |
| "Enables setting fan parameters features when true"); |
| |
| module_param_named(brightness_mode, brightness_mode, int, 0); |
| MODULE_PARM_DESC(brightness_mode, |
| "Selects brightness control strategy: " |
| "0=auto, 1=EC, 2=CMOS, 3=both"); |
| |
| module_param(brightness_enable, uint, 0); |
| MODULE_PARM_DESC(brightness_enable, |
| "Enables backlight control when 1, disables when 0"); |
| |
| module_param(hotkey_report_mode, uint, 0); |
| MODULE_PARM_DESC(hotkey_report_mode, |
| "used for backwards compatibility with userspace, " |
| "see documentation"); |
| |
| #define TPACPI_PARAM(feature) \ |
| module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ |
| MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \ |
| "at module load, see documentation") |
| |
| TPACPI_PARAM(hotkey); |
| TPACPI_PARAM(bluetooth); |
| TPACPI_PARAM(video); |
| TPACPI_PARAM(light); |
| #ifdef CONFIG_THINKPAD_ACPI_DOCK |
| TPACPI_PARAM(dock); |
| #endif |
| #ifdef CONFIG_THINKPAD_ACPI_BAY |
| TPACPI_PARAM(bay); |
| #endif /* CONFIG_THINKPAD_ACPI_BAY */ |
| TPACPI_PARAM(cmos); |
| TPACPI_PARAM(led); |
| TPACPI_PARAM(beep); |
| TPACPI_PARAM(ecdump); |
| TPACPI_PARAM(brightness); |
| TPACPI_PARAM(volume); |
| TPACPI_PARAM(fan); |
| |
| static void thinkpad_acpi_module_exit(void) |
| { |
| struct ibm_struct *ibm, *itmp; |
| |
| tpacpi_lifecycle = TPACPI_LIFE_EXITING; |
| |
| list_for_each_entry_safe_reverse(ibm, itmp, |
| &tpacpi_all_drivers, |
| all_drivers) { |
| ibm_exit(ibm); |
| } |
| |
| dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); |
| |
| if (tpacpi_inputdev) { |
| if (tp_features.input_device_registered) |
| input_unregister_device(tpacpi_inputdev); |
| else |
| input_free_device(tpacpi_inputdev); |
| } |
| |
| if (tpacpi_hwmon) |
| hwmon_device_unregister(tpacpi_hwmon); |
| |
| if (tp_features.sensors_pdev_attrs_registered) |
| device_remove_file(&tpacpi_sensors_pdev->dev, |
| &dev_attr_thinkpad_acpi_pdev_name); |
| if (tpacpi_sensors_pdev) |
| platform_device_unregister(tpacpi_sensors_pdev); |
| if (tpacpi_pdev) |
| platform_device_unregister(tpacpi_pdev); |
| |
| if (tp_features.sensors_pdrv_attrs_registered) |
| tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); |
| if (tp_features.platform_drv_attrs_registered) |
| tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); |
| |
| if (tp_features.sensors_pdrv_registered) |
| platform_driver_unregister(&tpacpi_hwmon_pdriver); |
| |
| if (tp_features.platform_drv_registered) |
| platform_driver_unregister(&tpacpi_pdriver); |
| |
| if (proc_dir) |
| remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); |
| |
| if (tpacpi_wq) |
| destroy_workqueue(tpacpi_wq); |
| |
| kfree(thinkpad_id.bios_version_str); |
| kfree(thinkpad_id.ec_version_str); |
| kfree(thinkpad_id.model_str); |
| } |
| |
| |
| static int __init thinkpad_acpi_module_init(void) |
| { |
| int ret, i; |
| |
| tpacpi_lifecycle = TPACPI_LIFE_INIT; |
| |
| /* Parameter checking */ |
| if (hotkey_report_mode > 2) |
| return -EINVAL; |
| |
| /* Driver-level probe */ |
| |
| ret = get_thinkpad_model_data(&thinkpad_id); |
| if (ret) { |
| printk(TPACPI_ERR |
| "unable to get DMI data: %d\n", ret); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| ret = probe_for_thinkpad(); |
| if (ret) { |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| |
| /* Driver initialization */ |
| |
| TPACPI_ACPIHANDLE_INIT(ecrd); |
| TPACPI_ACPIHANDLE_INIT(ecwr); |
| |
| tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); |
| if (!tpacpi_wq) { |
| thinkpad_acpi_module_exit(); |
| return -ENOMEM; |
| } |
| |
| proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); |
| if (!proc_dir) { |
| printk(TPACPI_ERR |
| "unable to create proc dir " TPACPI_PROC_DIR); |
| thinkpad_acpi_module_exit(); |
| return -ENODEV; |
| } |
| proc_dir->owner = THIS_MODULE; |
| |
| ret = platform_driver_register(&tpacpi_pdriver); |
| if (ret) { |
| printk(TPACPI_ERR |
| "unable to register main platform driver\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| tp_features.platform_drv_registered = 1; |
| |
| ret = platform_driver_register(&tpacpi_hwmon_pdriver); |
| if (ret) { |
| printk(TPACPI_ERR |
| "unable to register hwmon platform driver\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| tp_features.sensors_pdrv_registered = 1; |
| |
| ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); |
| if (!ret) { |
| tp_features.platform_drv_attrs_registered = 1; |
| ret = tpacpi_create_driver_attributes( |
| &tpacpi_hwmon_pdriver.driver); |
| } |
| if (ret) { |
| printk(TPACPI_ERR |
| "unable to create sysfs driver attributes\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| tp_features.sensors_pdrv_attrs_registered = 1; |
| |
| |
| /* Device initialization */ |
| tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, |
| NULL, 0); |
| if (IS_ERR(tpacpi_pdev)) { |
| ret = PTR_ERR(tpacpi_pdev); |
| tpacpi_pdev = NULL; |
| printk(TPACPI_ERR "unable to register platform device\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| tpacpi_sensors_pdev = platform_device_register_simple( |
| TPACPI_HWMON_DRVR_NAME, |
| -1, NULL, 0); |
| if (IS_ERR(tpacpi_sensors_pdev)) { |
| ret = PTR_ERR(tpacpi_sensors_pdev); |
| tpacpi_sensors_pdev = NULL; |
| printk(TPACPI_ERR |
| "unable to register hwmon platform device\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| ret = device_create_file(&tpacpi_sensors_pdev->dev, |
| &dev_attr_thinkpad_acpi_pdev_name); |
| if (ret) { |
| printk(TPACPI_ERR |
| "unable to create sysfs hwmon device attributes\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| tp_features.sensors_pdev_attrs_registered = 1; |
| tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev); |
| if (IS_ERR(tpacpi_hwmon)) { |
| ret = PTR_ERR(tpacpi_hwmon); |
| tpacpi_hwmon = NULL; |
| printk(TPACPI_ERR "unable to register hwmon device\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| mutex_init(&tpacpi_inputdev_send_mutex); |
| tpacpi_inputdev = input_allocate_device(); |
| if (!tpacpi_inputdev) { |
| printk(TPACPI_ERR "unable to allocate input device\n"); |
| thinkpad_acpi_module_exit(); |
| return -ENOMEM; |
| } else { |
| /* Prepare input device, but don't register */ |
| tpacpi_inputdev->name = "ThinkPad Extra Buttons"; |
| tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; |
| tpacpi_inputdev->id.bustype = BUS_HOST; |
| tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ? |
| thinkpad_id.vendor : |
| PCI_VENDOR_ID_IBM; |
| tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; |
| tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; |
| } |
| for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { |
| ret = ibm_init(&ibms_init[i]); |
| if (ret >= 0 && *ibms_init[i].param) |
| ret = ibms_init[i].data->write(ibms_init[i].param); |
| if (ret < 0) { |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } |
| } |
| ret = input_register_device(tpacpi_inputdev); |
| if (ret < 0) { |
| printk(TPACPI_ERR "unable to register input device\n"); |
| thinkpad_acpi_module_exit(); |
| return ret; |
| } else { |
| tp_features.input_device_registered = 1; |
| } |
| |
| tpacpi_lifecycle = TPACPI_LIFE_RUNNING; |
| return 0; |
| } |
| |
| /* Please remove this in year 2009 */ |
| MODULE_ALIAS("ibm_acpi"); |
| |
| MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); |
| |
| /* |
| * DMI matching for module autoloading |
| * |
| * See http://thinkwiki.org/wiki/List_of_DMI_IDs |
| * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads |
| * |
| * Only models listed in thinkwiki will be supported, so add yours |
| * if it is not there yet. |
| */ |
| #define IBM_BIOS_MODULE_ALIAS(__type) \ |
| MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW") |
| |
| /* Non-ancient thinkpads */ |
| MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*"); |
| MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*"); |
| |
| /* Ancient thinkpad BIOSes have to be identified by |
| * BIOS type or model number, and there are far less |
| * BIOS types than model numbers... */ |
| IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]"); |
| IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]"); |
| IBM_BIOS_MODULE_ALIAS("K[U,X-Z]"); |
| |
| MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh"); |
| MODULE_DESCRIPTION(TPACPI_DESC); |
| MODULE_VERSION(TPACPI_VERSION); |
| MODULE_LICENSE("GPL"); |
| |
| module_init(thinkpad_acpi_module_init); |
| module_exit(thinkpad_acpi_module_exit); |
