| /* |
| * eeepc-laptop.c - Asus Eee PC extras |
| * |
| * Based on asus_acpi.c as patched for the Eee PC by Asus: |
| * ftp://ftp.asus.com/pub/ASUS/EeePC/701/ASUS_ACPI_071126.rar |
| * Based on eee.c from eeepc-linux |
| * |
| * 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. |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/types.h> |
| #include <linux/platform_device.h> |
| #include <linux/backlight.h> |
| #include <linux/fb.h> |
| #include <linux/hwmon.h> |
| #include <linux/hwmon-sysfs.h> |
| #include <linux/slab.h> |
| #include <acpi/acpi_drivers.h> |
| #include <acpi/acpi_bus.h> |
| #include <linux/uaccess.h> |
| #include <linux/input.h> |
| #include <linux/input/sparse-keymap.h> |
| #include <linux/rfkill.h> |
| #include <linux/pci.h> |
| #include <linux/pci_hotplug.h> |
| #include <linux/leds.h> |
| #include <linux/dmi.h> |
| |
| #define EEEPC_LAPTOP_VERSION "0.1" |
| #define EEEPC_LAPTOP_NAME "Eee PC Hotkey Driver" |
| #define EEEPC_LAPTOP_FILE "eeepc" |
| |
| #define EEEPC_ACPI_CLASS "hotkey" |
| #define EEEPC_ACPI_DEVICE_NAME "Hotkey" |
| #define EEEPC_ACPI_HID "ASUS010" |
| |
| MODULE_AUTHOR("Corentin Chary, Eric Cooper"); |
| MODULE_DESCRIPTION(EEEPC_LAPTOP_NAME); |
| MODULE_LICENSE("GPL"); |
| |
| static bool hotplug_disabled; |
| |
| module_param(hotplug_disabled, bool, 0444); |
| MODULE_PARM_DESC(hotplug_disabled, |
| "Disable hotplug for wireless device. " |
| "If your laptop need that, please report to " |
| "acpi4asus-user@lists.sourceforge.net."); |
| |
| /* |
| * Definitions for Asus EeePC |
| */ |
| #define NOTIFY_BRN_MIN 0x20 |
| #define NOTIFY_BRN_MAX 0x2f |
| |
| enum { |
| DISABLE_ASL_WLAN = 0x0001, |
| DISABLE_ASL_BLUETOOTH = 0x0002, |
| DISABLE_ASL_IRDA = 0x0004, |
| DISABLE_ASL_CAMERA = 0x0008, |
| DISABLE_ASL_TV = 0x0010, |
| DISABLE_ASL_GPS = 0x0020, |
| DISABLE_ASL_DISPLAYSWITCH = 0x0040, |
| DISABLE_ASL_MODEM = 0x0080, |
| DISABLE_ASL_CARDREADER = 0x0100, |
| DISABLE_ASL_3G = 0x0200, |
| DISABLE_ASL_WIMAX = 0x0400, |
| DISABLE_ASL_HWCF = 0x0800 |
| }; |
| |
| enum { |
| CM_ASL_WLAN = 0, |
| CM_ASL_BLUETOOTH, |
| CM_ASL_IRDA, |
| CM_ASL_1394, |
| CM_ASL_CAMERA, |
| CM_ASL_TV, |
| CM_ASL_GPS, |
| CM_ASL_DVDROM, |
| CM_ASL_DISPLAYSWITCH, |
| CM_ASL_PANELBRIGHT, |
| CM_ASL_BIOSFLASH, |
| CM_ASL_ACPIFLASH, |
| CM_ASL_CPUFV, |
| CM_ASL_CPUTEMPERATURE, |
| CM_ASL_FANCPU, |
| CM_ASL_FANCHASSIS, |
| CM_ASL_USBPORT1, |
| CM_ASL_USBPORT2, |
| CM_ASL_USBPORT3, |
| CM_ASL_MODEM, |
| CM_ASL_CARDREADER, |
| CM_ASL_3G, |
| CM_ASL_WIMAX, |
| CM_ASL_HWCF, |
| CM_ASL_LID, |
| CM_ASL_TYPE, |
| CM_ASL_PANELPOWER, /*P901*/ |
| CM_ASL_TPD |
| }; |
| |
| static const char *cm_getv[] = { |
| "WLDG", "BTHG", NULL, NULL, |
| "CAMG", NULL, NULL, NULL, |
| NULL, "PBLG", NULL, NULL, |
| "CFVG", NULL, NULL, NULL, |
| "USBG", NULL, NULL, "MODG", |
| "CRDG", "M3GG", "WIMG", "HWCF", |
| "LIDG", "TYPE", "PBPG", "TPDG" |
| }; |
| |
| static const char *cm_setv[] = { |
| "WLDS", "BTHS", NULL, NULL, |
| "CAMS", NULL, NULL, NULL, |
| "SDSP", "PBLS", "HDPS", NULL, |
| "CFVS", NULL, NULL, NULL, |
| "USBG", NULL, NULL, "MODS", |
| "CRDS", "M3GS", "WIMS", NULL, |
| NULL, NULL, "PBPS", "TPDS" |
| }; |
| |
| static const struct key_entry eeepc_keymap[] = { |
| { KE_KEY, 0x10, { KEY_WLAN } }, |
| { KE_KEY, 0x11, { KEY_WLAN } }, |
| { KE_KEY, 0x12, { KEY_PROG1 } }, |
| { KE_KEY, 0x13, { KEY_MUTE } }, |
| { KE_KEY, 0x14, { KEY_VOLUMEDOWN } }, |
| { KE_KEY, 0x15, { KEY_VOLUMEUP } }, |
| { KE_KEY, 0x16, { KEY_DISPLAY_OFF } }, |
| { KE_KEY, 0x1a, { KEY_COFFEE } }, |
| { KE_KEY, 0x1b, { KEY_ZOOM } }, |
| { KE_KEY, 0x1c, { KEY_PROG2 } }, |
| { KE_KEY, 0x1d, { KEY_PROG3 } }, |
| { KE_KEY, NOTIFY_BRN_MIN, { KEY_BRIGHTNESSDOWN } }, |
| { KE_KEY, NOTIFY_BRN_MAX, { KEY_BRIGHTNESSUP } }, |
| { KE_KEY, 0x30, { KEY_SWITCHVIDEOMODE } }, |
| { KE_KEY, 0x31, { KEY_SWITCHVIDEOMODE } }, |
| { KE_KEY, 0x32, { KEY_SWITCHVIDEOMODE } }, |
| { KE_KEY, 0x37, { KEY_F13 } }, /* Disable Touchpad */ |
| { KE_KEY, 0x38, { KEY_F14 } }, |
| { KE_END, 0 }, |
| }; |
| |
| /* |
| * This is the main structure, we can use it to store useful information |
| */ |
| struct eeepc_laptop { |
| acpi_handle handle; /* the handle of the acpi device */ |
| u32 cm_supported; /* the control methods supported |
| by this BIOS */ |
| bool cpufv_disabled; |
| bool hotplug_disabled; |
| u16 event_count[128]; /* count for each event */ |
| |
| struct platform_device *platform_device; |
| struct acpi_device *device; /* the device we are in */ |
| struct device *hwmon_device; |
| struct backlight_device *backlight_device; |
| |
| struct input_dev *inputdev; |
| |
| struct rfkill *wlan_rfkill; |
| struct rfkill *bluetooth_rfkill; |
| struct rfkill *wwan3g_rfkill; |
| struct rfkill *wimax_rfkill; |
| |
| struct hotplug_slot *hotplug_slot; |
| struct mutex hotplug_lock; |
| |
| struct led_classdev tpd_led; |
| int tpd_led_wk; |
| struct workqueue_struct *led_workqueue; |
| struct work_struct tpd_led_work; |
| }; |
| |
| /* |
| * ACPI Helpers |
| */ |
| static int write_acpi_int(acpi_handle handle, const char *method, int val) |
| { |
| struct acpi_object_list params; |
| union acpi_object in_obj; |
| acpi_status status; |
| |
| params.count = 1; |
| params.pointer = &in_obj; |
| in_obj.type = ACPI_TYPE_INTEGER; |
| in_obj.integer.value = val; |
| |
| status = acpi_evaluate_object(handle, (char *)method, ¶ms, NULL); |
| return (status == AE_OK ? 0 : -1); |
| } |
| |
| static int read_acpi_int(acpi_handle handle, const char *method, int *val) |
| { |
| acpi_status status; |
| unsigned long long result; |
| |
| status = acpi_evaluate_integer(handle, (char *)method, NULL, &result); |
| if (ACPI_FAILURE(status)) { |
| *val = -1; |
| return -1; |
| } else { |
| *val = result; |
| return 0; |
| } |
| } |
| |
| static int set_acpi(struct eeepc_laptop *eeepc, int cm, int value) |
| { |
| const char *method = cm_setv[cm]; |
| |
| if (method == NULL) |
| return -ENODEV; |
| if ((eeepc->cm_supported & (0x1 << cm)) == 0) |
| return -ENODEV; |
| |
| if (write_acpi_int(eeepc->handle, method, value)) |
| pr_warn("Error writing %s\n", method); |
| return 0; |
| } |
| |
| static int get_acpi(struct eeepc_laptop *eeepc, int cm) |
| { |
| const char *method = cm_getv[cm]; |
| int value; |
| |
| if (method == NULL) |
| return -ENODEV; |
| if ((eeepc->cm_supported & (0x1 << cm)) == 0) |
| return -ENODEV; |
| |
| if (read_acpi_int(eeepc->handle, method, &value)) |
| pr_warn("Error reading %s\n", method); |
| return value; |
| } |
| |
| static int acpi_setter_handle(struct eeepc_laptop *eeepc, int cm, |
| acpi_handle *handle) |
| { |
| const char *method = cm_setv[cm]; |
| acpi_status status; |
| |
| if (method == NULL) |
| return -ENODEV; |
| if ((eeepc->cm_supported & (0x1 << cm)) == 0) |
| return -ENODEV; |
| |
| status = acpi_get_handle(eeepc->handle, (char *)method, |
| handle); |
| if (status != AE_OK) { |
| pr_warn("Error finding %s\n", method); |
| return -ENODEV; |
| } |
| return 0; |
| } |
| |
| |
| /* |
| * Sys helpers |
| */ |
| static int parse_arg(const char *buf, unsigned long count, int *val) |
| { |
| if (!count) |
| return 0; |
| if (sscanf(buf, "%i", val) != 1) |
| return -EINVAL; |
| return count; |
| } |
| |
| static ssize_t store_sys_acpi(struct device *dev, int cm, |
| const char *buf, size_t count) |
| { |
| struct eeepc_laptop *eeepc = dev_get_drvdata(dev); |
| int rv, value; |
| |
| rv = parse_arg(buf, count, &value); |
| if (rv > 0) |
| value = set_acpi(eeepc, cm, value); |
| if (value < 0) |
| return -EIO; |
| return rv; |
| } |
| |
| static ssize_t show_sys_acpi(struct device *dev, int cm, char *buf) |
| { |
| struct eeepc_laptop *eeepc = dev_get_drvdata(dev); |
| int value = get_acpi(eeepc, cm); |
| |
| if (value < 0) |
| return -EIO; |
| return sprintf(buf, "%d\n", value); |
| } |
| |
| #define EEEPC_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ |
| static ssize_t show_##_name(struct device *dev, \ |
| struct device_attribute *attr, \ |
| char *buf) \ |
| { \ |
| return show_sys_acpi(dev, _cm, buf); \ |
| } \ |
| static ssize_t store_##_name(struct device *dev, \ |
| struct device_attribute *attr, \ |
| const char *buf, size_t count) \ |
| { \ |
| return store_sys_acpi(dev, _cm, buf, count); \ |
| } \ |
| static struct device_attribute dev_attr_##_name = { \ |
| .attr = { \ |
| .name = __stringify(_name), \ |
| .mode = _mode }, \ |
| .show = show_##_name, \ |
| .store = store_##_name, \ |
| } |
| |
| EEEPC_CREATE_DEVICE_ATTR(camera, 0644, CM_ASL_CAMERA); |
| EEEPC_CREATE_DEVICE_ATTR(cardr, 0644, CM_ASL_CARDREADER); |
| EEEPC_CREATE_DEVICE_ATTR(disp, 0200, CM_ASL_DISPLAYSWITCH); |
| |
| struct eeepc_cpufv { |
| int num; |
| int cur; |
| }; |
| |
| static int get_cpufv(struct eeepc_laptop *eeepc, struct eeepc_cpufv *c) |
| { |
| c->cur = get_acpi(eeepc, CM_ASL_CPUFV); |
| c->num = (c->cur >> 8) & 0xff; |
| c->cur &= 0xff; |
| if (c->cur < 0 || c->num <= 0 || c->num > 12) |
| return -ENODEV; |
| return 0; |
| } |
| |
| static ssize_t show_available_cpufv(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct eeepc_laptop *eeepc = dev_get_drvdata(dev); |
| struct eeepc_cpufv c; |
| int i; |
| ssize_t len = 0; |
| |
| if (get_cpufv(eeepc, &c)) |
| return -ENODEV; |
| for (i = 0; i < c.num; i++) |
| len += sprintf(buf + len, "%d ", i); |
| len += sprintf(buf + len, "\n"); |
| return len; |
| } |
| |
| static ssize_t show_cpufv(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct eeepc_laptop *eeepc = dev_get_drvdata(dev); |
| struct eeepc_cpufv c; |
| |
| if (get_cpufv(eeepc, &c)) |
| return -ENODEV; |
| return sprintf(buf, "%#x\n", (c.num << 8) | c.cur); |
| } |
| |
| static ssize_t store_cpufv(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct eeepc_laptop *eeepc = dev_get_drvdata(dev); |
| struct eeepc_cpufv c; |
| int rv, value; |
| |
| if (eeepc->cpufv_disabled) |
| return -EPERM; |
| if (get_cpufv(eeepc, &c)) |
| return -ENODEV; |
| rv = parse_arg(buf, count, &value); |
| if (rv < 0) |
| return rv; |
| if (!rv || value < 0 || value >= c.num) |
| return -EINVAL; |
| set_acpi(eeepc, CM_ASL_CPUFV, value); |
| return rv; |
| } |
| |
| static ssize_t show_cpufv_disabled(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct eeepc_laptop *eeepc = dev_get_drvdata(dev); |
| |
| return sprintf(buf, "%d\n", eeepc->cpufv_disabled); |
| } |
| |
| static ssize_t store_cpufv_disabled(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct eeepc_laptop *eeepc = dev_get_drvdata(dev); |
| int rv, value; |
| |
| rv = parse_arg(buf, count, &value); |
| if (rv < 0) |
| return rv; |
| |
| switch (value) { |
| case 0: |
| if (eeepc->cpufv_disabled) |
| pr_warn("cpufv enabled (not officially supported " |
| "on this model)\n"); |
| eeepc->cpufv_disabled = false; |
| return rv; |
| case 1: |
| return -EPERM; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| |
| static struct device_attribute dev_attr_cpufv = { |
| .attr = { |
| .name = "cpufv", |
| .mode = 0644 }, |
| .show = show_cpufv, |
| .store = store_cpufv |
| }; |
| |
| static struct device_attribute dev_attr_available_cpufv = { |
| .attr = { |
| .name = "available_cpufv", |
| .mode = 0444 }, |
| .show = show_available_cpufv |
| }; |
| |
| static struct device_attribute dev_attr_cpufv_disabled = { |
| .attr = { |
| .name = "cpufv_disabled", |
| .mode = 0644 }, |
| .show = show_cpufv_disabled, |
| .store = store_cpufv_disabled |
| }; |
| |
| |
| static struct attribute *platform_attributes[] = { |
| &dev_attr_camera.attr, |
| &dev_attr_cardr.attr, |
| &dev_attr_disp.attr, |
| &dev_attr_cpufv.attr, |
| &dev_attr_available_cpufv.attr, |
| &dev_attr_cpufv_disabled.attr, |
| NULL |
| }; |
| |
| static struct attribute_group platform_attribute_group = { |
| .attrs = platform_attributes |
| }; |
| |
| static int eeepc_platform_init(struct eeepc_laptop *eeepc) |
| { |
| int result; |
| |
| eeepc->platform_device = platform_device_alloc(EEEPC_LAPTOP_FILE, -1); |
| if (!eeepc->platform_device) |
| return -ENOMEM; |
| platform_set_drvdata(eeepc->platform_device, eeepc); |
| |
| result = platform_device_add(eeepc->platform_device); |
| if (result) |
| goto fail_platform_device; |
| |
| result = sysfs_create_group(&eeepc->platform_device->dev.kobj, |
| &platform_attribute_group); |
| if (result) |
| goto fail_sysfs; |
| return 0; |
| |
| fail_sysfs: |
| platform_device_del(eeepc->platform_device); |
| fail_platform_device: |
| platform_device_put(eeepc->platform_device); |
| return result; |
| } |
| |
| static void eeepc_platform_exit(struct eeepc_laptop *eeepc) |
| { |
| sysfs_remove_group(&eeepc->platform_device->dev.kobj, |
| &platform_attribute_group); |
| platform_device_unregister(eeepc->platform_device); |
| } |
| |
| /* |
| * LEDs |
| */ |
| /* |
| * These functions actually update the LED's, and are called from a |
| * workqueue. By doing this as separate work rather than when the LED |
| * subsystem asks, we avoid messing with the Asus ACPI stuff during a |
| * potentially bad time, such as a timer interrupt. |
| */ |
| static void tpd_led_update(struct work_struct *work) |
| { |
| struct eeepc_laptop *eeepc; |
| |
| eeepc = container_of(work, struct eeepc_laptop, tpd_led_work); |
| |
| set_acpi(eeepc, CM_ASL_TPD, eeepc->tpd_led_wk); |
| } |
| |
| static void tpd_led_set(struct led_classdev *led_cdev, |
| enum led_brightness value) |
| { |
| struct eeepc_laptop *eeepc; |
| |
| eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led); |
| |
| eeepc->tpd_led_wk = (value > 0) ? 1 : 0; |
| queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work); |
| } |
| |
| static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) |
| { |
| struct eeepc_laptop *eeepc; |
| |
| eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led); |
| |
| return get_acpi(eeepc, CM_ASL_TPD); |
| } |
| |
| static int eeepc_led_init(struct eeepc_laptop *eeepc) |
| { |
| int rv; |
| |
| if (get_acpi(eeepc, CM_ASL_TPD) == -ENODEV) |
| return 0; |
| |
| eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue"); |
| if (!eeepc->led_workqueue) |
| return -ENOMEM; |
| INIT_WORK(&eeepc->tpd_led_work, tpd_led_update); |
| |
| eeepc->tpd_led.name = "eeepc::touchpad"; |
| eeepc->tpd_led.brightness_set = tpd_led_set; |
| if (get_acpi(eeepc, CM_ASL_TPD) >= 0) /* if method is available */ |
| eeepc->tpd_led.brightness_get = tpd_led_get; |
| eeepc->tpd_led.max_brightness = 1; |
| |
| rv = led_classdev_register(&eeepc->platform_device->dev, |
| &eeepc->tpd_led); |
| if (rv) { |
| destroy_workqueue(eeepc->led_workqueue); |
| return rv; |
| } |
| |
| return 0; |
| } |
| |
| static void eeepc_led_exit(struct eeepc_laptop *eeepc) |
| { |
| if (!IS_ERR_OR_NULL(eeepc->tpd_led.dev)) |
| led_classdev_unregister(&eeepc->tpd_led); |
| if (eeepc->led_workqueue) |
| destroy_workqueue(eeepc->led_workqueue); |
| } |
| |
| |
| /* |
| * PCI hotplug (for wlan rfkill) |
| */ |
| static bool eeepc_wlan_rfkill_blocked(struct eeepc_laptop *eeepc) |
| { |
| if (get_acpi(eeepc, CM_ASL_WLAN) == 1) |
| return false; |
| return true; |
| } |
| |
| static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc, acpi_handle handle) |
| { |
| struct pci_dev *port; |
| struct pci_dev *dev; |
| struct pci_bus *bus; |
| bool blocked = eeepc_wlan_rfkill_blocked(eeepc); |
| bool absent; |
| u32 l; |
| |
| if (eeepc->wlan_rfkill) |
| rfkill_set_sw_state(eeepc->wlan_rfkill, blocked); |
| |
| mutex_lock(&eeepc->hotplug_lock); |
| |
| if (eeepc->hotplug_slot) { |
| port = acpi_get_pci_dev(handle); |
| if (!port) { |
| pr_warning("Unable to find port\n"); |
| goto out_unlock; |
| } |
| |
| bus = port->subordinate; |
| |
| if (!bus) { |
| pr_warn("Unable to find PCI bus 1?\n"); |
| goto out_unlock; |
| } |
| |
| if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) { |
| pr_err("Unable to read PCI config space?\n"); |
| goto out_unlock; |
| } |
| |
| absent = (l == 0xffffffff); |
| |
| if (blocked != absent) { |
| pr_warn("BIOS says wireless lan is %s, " |
| "but the pci device is %s\n", |
| blocked ? "blocked" : "unblocked", |
| absent ? "absent" : "present"); |
| pr_warn("skipped wireless hotplug as probably " |
| "inappropriate for this model\n"); |
| goto out_unlock; |
| } |
| |
| if (!blocked) { |
| dev = pci_get_slot(bus, 0); |
| if (dev) { |
| /* Device already present */ |
| pci_dev_put(dev); |
| goto out_unlock; |
| } |
| dev = pci_scan_single_device(bus, 0); |
| if (dev) { |
| pci_bus_assign_resources(bus); |
| if (pci_bus_add_device(dev)) |
| pr_err("Unable to hotplug wifi\n"); |
| } |
| } else { |
| dev = pci_get_slot(bus, 0); |
| if (dev) { |
| pci_stop_and_remove_bus_device(dev); |
| pci_dev_put(dev); |
| } |
| } |
| } |
| |
| out_unlock: |
| mutex_unlock(&eeepc->hotplug_lock); |
| } |
| |
| static void eeepc_rfkill_hotplug_update(struct eeepc_laptop *eeepc, char *node) |
| { |
| acpi_status status = AE_OK; |
| acpi_handle handle; |
| |
| status = acpi_get_handle(NULL, node, &handle); |
| |
| if (ACPI_SUCCESS(status)) |
| eeepc_rfkill_hotplug(eeepc, handle); |
| } |
| |
| static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data) |
| { |
| struct eeepc_laptop *eeepc = data; |
| |
| if (event != ACPI_NOTIFY_BUS_CHECK) |
| return; |
| |
| eeepc_rfkill_hotplug(eeepc, handle); |
| } |
| |
| static int eeepc_register_rfkill_notifier(struct eeepc_laptop *eeepc, |
| char *node) |
| { |
| acpi_status status; |
| acpi_handle handle; |
| |
| status = acpi_get_handle(NULL, node, &handle); |
| |
| if (ACPI_SUCCESS(status)) { |
| status = acpi_install_notify_handler(handle, |
| ACPI_SYSTEM_NOTIFY, |
| eeepc_rfkill_notify, |
| eeepc); |
| if (ACPI_FAILURE(status)) |
| pr_warn("Failed to register notify on %s\n", node); |
| |
| /* |
| * Refresh pci hotplug in case the rfkill state was |
| * changed during setup. |
| */ |
| eeepc_rfkill_hotplug(eeepc, handle); |
| } else |
| return -ENODEV; |
| |
| return 0; |
| } |
| |
| static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc, |
| char *node) |
| { |
| acpi_status status = AE_OK; |
| acpi_handle handle; |
| |
| status = acpi_get_handle(NULL, node, &handle); |
| |
| if (ACPI_SUCCESS(status)) { |
| status = acpi_remove_notify_handler(handle, |
| ACPI_SYSTEM_NOTIFY, |
| eeepc_rfkill_notify); |
| if (ACPI_FAILURE(status)) |
| pr_err("Error removing rfkill notify handler %s\n", |
| node); |
| /* |
| * Refresh pci hotplug in case the rfkill |
| * state was changed after |
| * eeepc_unregister_rfkill_notifier() |
| */ |
| eeepc_rfkill_hotplug(eeepc, handle); |
| } |
| } |
| |
| static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot, |
| u8 *value) |
| { |
| struct eeepc_laptop *eeepc = hotplug_slot->private; |
| int val = get_acpi(eeepc, CM_ASL_WLAN); |
| |
| if (val == 1 || val == 0) |
| *value = val; |
| else |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot) |
| { |
| kfree(hotplug_slot->info); |
| kfree(hotplug_slot); |
| } |
| |
| static struct hotplug_slot_ops eeepc_hotplug_slot_ops = { |
| .owner = THIS_MODULE, |
| .get_adapter_status = eeepc_get_adapter_status, |
| .get_power_status = eeepc_get_adapter_status, |
| }; |
| |
| static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc) |
| { |
| int ret = -ENOMEM; |
| struct pci_bus *bus = pci_find_bus(0, 1); |
| |
| if (!bus) { |
| pr_err("Unable to find wifi PCI bus\n"); |
| return -ENODEV; |
| } |
| |
| eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL); |
| if (!eeepc->hotplug_slot) |
| goto error_slot; |
| |
| eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info), |
| GFP_KERNEL); |
| if (!eeepc->hotplug_slot->info) |
| goto error_info; |
| |
| eeepc->hotplug_slot->private = eeepc; |
| eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug; |
| eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops; |
| eeepc_get_adapter_status(eeepc->hotplug_slot, |
| &eeepc->hotplug_slot->info->adapter_status); |
| |
| ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi"); |
| if (ret) { |
| pr_err("Unable to register hotplug slot - %d\n", ret); |
| goto error_register; |
| } |
| |
| return 0; |
| |
| error_register: |
| kfree(eeepc->hotplug_slot->info); |
| error_info: |
| kfree(eeepc->hotplug_slot); |
| eeepc->hotplug_slot = NULL; |
| error_slot: |
| return ret; |
| } |
| |
| /* |
| * Rfkill devices |
| */ |
| static int eeepc_rfkill_set(void *data, bool blocked) |
| { |
| acpi_handle handle = data; |
| |
| return write_acpi_int(handle, NULL, !blocked); |
| } |
| |
| static const struct rfkill_ops eeepc_rfkill_ops = { |
| .set_block = eeepc_rfkill_set, |
| }; |
| |
| static int eeepc_new_rfkill(struct eeepc_laptop *eeepc, |
| struct rfkill **rfkill, |
| const char *name, |
| enum rfkill_type type, int cm) |
| { |
| acpi_handle handle; |
| int result; |
| |
| result = acpi_setter_handle(eeepc, cm, &handle); |
| if (result < 0) |
| return result; |
| |
| *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type, |
| &eeepc_rfkill_ops, handle); |
| |
| if (!*rfkill) |
| return -EINVAL; |
| |
| rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1); |
| result = rfkill_register(*rfkill); |
| if (result) { |
| rfkill_destroy(*rfkill); |
| *rfkill = NULL; |
| return result; |
| } |
| return 0; |
| } |
| |
| static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc) |
| { |
| eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5"); |
| eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6"); |
| eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7"); |
| if (eeepc->wlan_rfkill) { |
| rfkill_unregister(eeepc->wlan_rfkill); |
| rfkill_destroy(eeepc->wlan_rfkill); |
| eeepc->wlan_rfkill = NULL; |
| } |
| |
| if (eeepc->hotplug_slot) |
| pci_hp_deregister(eeepc->hotplug_slot); |
| |
| if (eeepc->bluetooth_rfkill) { |
| rfkill_unregister(eeepc->bluetooth_rfkill); |
| rfkill_destroy(eeepc->bluetooth_rfkill); |
| eeepc->bluetooth_rfkill = NULL; |
| } |
| if (eeepc->wwan3g_rfkill) { |
| rfkill_unregister(eeepc->wwan3g_rfkill); |
| rfkill_destroy(eeepc->wwan3g_rfkill); |
| eeepc->wwan3g_rfkill = NULL; |
| } |
| if (eeepc->wimax_rfkill) { |
| rfkill_unregister(eeepc->wimax_rfkill); |
| rfkill_destroy(eeepc->wimax_rfkill); |
| eeepc->wimax_rfkill = NULL; |
| } |
| } |
| |
| static int eeepc_rfkill_init(struct eeepc_laptop *eeepc) |
| { |
| int result = 0; |
| |
| mutex_init(&eeepc->hotplug_lock); |
| |
| result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill, |
| "eeepc-wlan", RFKILL_TYPE_WLAN, |
| CM_ASL_WLAN); |
| |
| if (result && result != -ENODEV) |
| goto exit; |
| |
| result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill, |
| "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH, |
| CM_ASL_BLUETOOTH); |
| |
| if (result && result != -ENODEV) |
| goto exit; |
| |
| result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill, |
| "eeepc-wwan3g", RFKILL_TYPE_WWAN, |
| CM_ASL_3G); |
| |
| if (result && result != -ENODEV) |
| goto exit; |
| |
| result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill, |
| "eeepc-wimax", RFKILL_TYPE_WIMAX, |
| CM_ASL_WIMAX); |
| |
| if (result && result != -ENODEV) |
| goto exit; |
| |
| if (eeepc->hotplug_disabled) |
| return 0; |
| |
| result = eeepc_setup_pci_hotplug(eeepc); |
| /* |
| * If we get -EBUSY then something else is handling the PCI hotplug - |
| * don't fail in this case |
| */ |
| if (result == -EBUSY) |
| result = 0; |
| |
| eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5"); |
| eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6"); |
| eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7"); |
| |
| exit: |
| if (result && result != -ENODEV) |
| eeepc_rfkill_exit(eeepc); |
| return result; |
| } |
| |
| /* |
| * Platform driver - hibernate/resume callbacks |
| */ |
| static int eeepc_hotk_thaw(struct device *device) |
| { |
| struct eeepc_laptop *eeepc = dev_get_drvdata(device); |
| |
| if (eeepc->wlan_rfkill) { |
| bool wlan; |
| |
| /* |
| * Work around bios bug - acpi _PTS turns off the wireless led |
| * during suspend. Normally it restores it on resume, but |
| * we should kick it ourselves in case hibernation is aborted. |
| */ |
| wlan = get_acpi(eeepc, CM_ASL_WLAN); |
| set_acpi(eeepc, CM_ASL_WLAN, wlan); |
| } |
| |
| return 0; |
| } |
| |
| static int eeepc_hotk_restore(struct device *device) |
| { |
| struct eeepc_laptop *eeepc = dev_get_drvdata(device); |
| |
| /* Refresh both wlan rfkill state and pci hotplug */ |
| if (eeepc->wlan_rfkill) { |
| eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P5"); |
| eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P6"); |
| eeepc_rfkill_hotplug_update(eeepc, "\\_SB.PCI0.P0P7"); |
| } |
| |
| if (eeepc->bluetooth_rfkill) |
| rfkill_set_sw_state(eeepc->bluetooth_rfkill, |
| get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1); |
| if (eeepc->wwan3g_rfkill) |
| rfkill_set_sw_state(eeepc->wwan3g_rfkill, |
| get_acpi(eeepc, CM_ASL_3G) != 1); |
| if (eeepc->wimax_rfkill) |
| rfkill_set_sw_state(eeepc->wimax_rfkill, |
| get_acpi(eeepc, CM_ASL_WIMAX) != 1); |
| |
| return 0; |
| } |
| |
| static const struct dev_pm_ops eeepc_pm_ops = { |
| .thaw = eeepc_hotk_thaw, |
| .restore = eeepc_hotk_restore, |
| }; |
| |
| static struct platform_driver platform_driver = { |
| .driver = { |
| .name = EEEPC_LAPTOP_FILE, |
| .owner = THIS_MODULE, |
| .pm = &eeepc_pm_ops, |
| } |
| }; |
| |
| /* |
| * Hwmon device |
| */ |
| |
| #define EEEPC_EC_SC00 0x61 |
| #define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */ |
| #define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */ |
| #define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */ |
| |
| #define EEEPC_EC_SFB0 0xD0 |
| #define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */ |
| |
| static int eeepc_get_fan_pwm(void) |
| { |
| u8 value = 0; |
| |
| ec_read(EEEPC_EC_FAN_PWM, &value); |
| return value * 255 / 100; |
| } |
| |
| static void eeepc_set_fan_pwm(int value) |
| { |
| value = SENSORS_LIMIT(value, 0, 255); |
| value = value * 100 / 255; |
| ec_write(EEEPC_EC_FAN_PWM, value); |
| } |
| |
| static int eeepc_get_fan_rpm(void) |
| { |
| u8 high = 0; |
| u8 low = 0; |
| |
| ec_read(EEEPC_EC_FAN_HRPM, &high); |
| ec_read(EEEPC_EC_FAN_LRPM, &low); |
| return high << 8 | low; |
| } |
| |
| static int eeepc_get_fan_ctrl(void) |
| { |
| u8 value = 0; |
| |
| ec_read(EEEPC_EC_FAN_CTRL, &value); |
| if (value & 0x02) |
| return 1; /* manual */ |
| else |
| return 2; /* automatic */ |
| } |
| |
| static void eeepc_set_fan_ctrl(int manual) |
| { |
| u8 value = 0; |
| |
| ec_read(EEEPC_EC_FAN_CTRL, &value); |
| if (manual == 1) |
| value |= 0x02; |
| else |
| value &= ~0x02; |
| ec_write(EEEPC_EC_FAN_CTRL, value); |
| } |
| |
| static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count) |
| { |
| int rv, value; |
| |
| rv = parse_arg(buf, count, &value); |
| if (rv > 0) |
| set(value); |
| return rv; |
| } |
| |
| static ssize_t show_sys_hwmon(int (*get)(void), char *buf) |
| { |
| return sprintf(buf, "%d\n", get()); |
| } |
| |
| #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \ |
| static ssize_t show_##_name(struct device *dev, \ |
| struct device_attribute *attr, \ |
| char *buf) \ |
| { \ |
| return show_sys_hwmon(_set, buf); \ |
| } \ |
| static ssize_t store_##_name(struct device *dev, \ |
| struct device_attribute *attr, \ |
| const char *buf, size_t count) \ |
| { \ |
| return store_sys_hwmon(_get, buf, count); \ |
| } \ |
| static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0); |
| |
| EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL); |
| EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR, |
| eeepc_get_fan_pwm, eeepc_set_fan_pwm); |
| EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, |
| eeepc_get_fan_ctrl, eeepc_set_fan_ctrl); |
| |
| static ssize_t |
| show_name(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| return sprintf(buf, "eeepc\n"); |
| } |
| static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0); |
| |
| static struct attribute *hwmon_attributes[] = { |
| &sensor_dev_attr_pwm1.dev_attr.attr, |
| &sensor_dev_attr_fan1_input.dev_attr.attr, |
| &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
| &sensor_dev_attr_name.dev_attr.attr, |
| NULL |
| }; |
| |
| static struct attribute_group hwmon_attribute_group = { |
| .attrs = hwmon_attributes |
| }; |
| |
| static void eeepc_hwmon_exit(struct eeepc_laptop *eeepc) |
| { |
| struct device *hwmon; |
| |
| hwmon = eeepc->hwmon_device; |
| if (!hwmon) |
| return; |
| sysfs_remove_group(&hwmon->kobj, |
| &hwmon_attribute_group); |
| hwmon_device_unregister(hwmon); |
| eeepc->hwmon_device = NULL; |
| } |
| |
| static int eeepc_hwmon_init(struct eeepc_laptop *eeepc) |
| { |
| struct device *hwmon; |
| int result; |
| |
| hwmon = hwmon_device_register(&eeepc->platform_device->dev); |
| if (IS_ERR(hwmon)) { |
| pr_err("Could not register eeepc hwmon device\n"); |
| eeepc->hwmon_device = NULL; |
| return PTR_ERR(hwmon); |
| } |
| eeepc->hwmon_device = hwmon; |
| result = sysfs_create_group(&hwmon->kobj, |
| &hwmon_attribute_group); |
| if (result) |
| eeepc_hwmon_exit(eeepc); |
| return result; |
| } |
| |
| /* |
| * Backlight device |
| */ |
| static int read_brightness(struct backlight_device *bd) |
| { |
| struct eeepc_laptop *eeepc = bl_get_data(bd); |
| |
| return get_acpi(eeepc, CM_ASL_PANELBRIGHT); |
| } |
| |
| static int set_brightness(struct backlight_device *bd, int value) |
| { |
| struct eeepc_laptop *eeepc = bl_get_data(bd); |
| |
| return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value); |
| } |
| |
| static int update_bl_status(struct backlight_device *bd) |
| { |
| return set_brightness(bd, bd->props.brightness); |
| } |
| |
| static const struct backlight_ops eeepcbl_ops = { |
| .get_brightness = read_brightness, |
| .update_status = update_bl_status, |
| }; |
| |
| static int eeepc_backlight_notify(struct eeepc_laptop *eeepc) |
| { |
| struct backlight_device *bd = eeepc->backlight_device; |
| int old = bd->props.brightness; |
| |
| backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); |
| |
| return old; |
| } |
| |
| static int eeepc_backlight_init(struct eeepc_laptop *eeepc) |
| { |
| struct backlight_properties props; |
| struct backlight_device *bd; |
| |
| memset(&props, 0, sizeof(struct backlight_properties)); |
| props.type = BACKLIGHT_PLATFORM; |
| props.max_brightness = 15; |
| bd = backlight_device_register(EEEPC_LAPTOP_FILE, |
| &eeepc->platform_device->dev, eeepc, |
| &eeepcbl_ops, &props); |
| if (IS_ERR(bd)) { |
| pr_err("Could not register eeepc backlight device\n"); |
| eeepc->backlight_device = NULL; |
| return PTR_ERR(bd); |
| } |
| eeepc->backlight_device = bd; |
| bd->props.brightness = read_brightness(bd); |
| bd->props.power = FB_BLANK_UNBLANK; |
| backlight_update_status(bd); |
| return 0; |
| } |
| |
| static void eeepc_backlight_exit(struct eeepc_laptop *eeepc) |
| { |
| if (eeepc->backlight_device) |
| backlight_device_unregister(eeepc->backlight_device); |
| eeepc->backlight_device = NULL; |
| } |
| |
| |
| /* |
| * Input device (i.e. hotkeys) |
| */ |
| static int eeepc_input_init(struct eeepc_laptop *eeepc) |
| { |
| struct input_dev *input; |
| int error; |
| |
| input = input_allocate_device(); |
| if (!input) { |
| pr_info("Unable to allocate input device\n"); |
| return -ENOMEM; |
| } |
| |
| input->name = "Asus EeePC extra buttons"; |
| input->phys = EEEPC_LAPTOP_FILE "/input0"; |
| input->id.bustype = BUS_HOST; |
| input->dev.parent = &eeepc->platform_device->dev; |
| |
| error = sparse_keymap_setup(input, eeepc_keymap, NULL); |
| if (error) { |
| pr_err("Unable to setup input device keymap\n"); |
| goto err_free_dev; |
| } |
| |
| error = input_register_device(input); |
| if (error) { |
| pr_err("Unable to register input device\n"); |
| goto err_free_keymap; |
| } |
| |
| eeepc->inputdev = input; |
| return 0; |
| |
| err_free_keymap: |
| sparse_keymap_free(input); |
| err_free_dev: |
| input_free_device(input); |
| return error; |
| } |
| |
| static void eeepc_input_exit(struct eeepc_laptop *eeepc) |
| { |
| if (eeepc->inputdev) { |
| sparse_keymap_free(eeepc->inputdev); |
| input_unregister_device(eeepc->inputdev); |
| } |
| eeepc->inputdev = NULL; |
| } |
| |
| /* |
| * ACPI driver |
| */ |
| static void eeepc_input_notify(struct eeepc_laptop *eeepc, int event) |
| { |
| if (!eeepc->inputdev) |
| return ; |
| if (!sparse_keymap_report_event(eeepc->inputdev, event, 1, true)) |
| pr_info("Unknown key %x pressed\n", event); |
| } |
| |
| static void eeepc_acpi_notify(struct acpi_device *device, u32 event) |
| { |
| struct eeepc_laptop *eeepc = acpi_driver_data(device); |
| u16 count; |
| |
| if (event > ACPI_MAX_SYS_NOTIFY) |
| return; |
| count = eeepc->event_count[event % 128]++; |
| acpi_bus_generate_proc_event(device, event, count); |
| acpi_bus_generate_netlink_event(device->pnp.device_class, |
| dev_name(&device->dev), event, |
| count); |
| |
| /* Brightness events are special */ |
| if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) { |
| |
| /* Ignore them completely if the acpi video driver is used */ |
| if (eeepc->backlight_device != NULL) { |
| int old_brightness, new_brightness; |
| |
| /* Update the backlight device. */ |
| old_brightness = eeepc_backlight_notify(eeepc); |
| |
| /* Convert event to keypress (obsolescent hack) */ |
| new_brightness = event - NOTIFY_BRN_MIN; |
| |
| if (new_brightness < old_brightness) { |
| event = NOTIFY_BRN_MIN; /* brightness down */ |
| } else if (new_brightness > old_brightness) { |
| event = NOTIFY_BRN_MAX; /* brightness up */ |
| } else { |
| /* |
| * no change in brightness - already at min/max, |
| * event will be desired value (or else ignored) |
| */ |
| } |
| eeepc_input_notify(eeepc, event); |
| } |
| } else { |
| /* Everything else is a bona-fide keypress event */ |
| eeepc_input_notify(eeepc, event); |
| } |
| } |
| |
| static void eeepc_dmi_check(struct eeepc_laptop *eeepc) |
| { |
| const char *model; |
| |
| model = dmi_get_system_info(DMI_PRODUCT_NAME); |
| if (!model) |
| return; |
| |
| /* |
| * Blacklist for setting cpufv (cpu speed). |
| * |
| * EeePC 4G ("701") implements CFVS, but it is not supported |
| * by the pre-installed OS, and the original option to change it |
| * in the BIOS setup screen was removed in later versions. |
| * |
| * Judging by the lack of "Super Hybrid Engine" on Asus product pages, |
| * this applies to all "701" models (4G/4G Surf/2G Surf). |
| * |
| * So Asus made a deliberate decision not to support it on this model. |
| * We have several reports that using it can cause the system to hang |
| * |
| * The hang has also been reported on a "702" (Model name "8G"?). |
| * |
| * We avoid dmi_check_system() / dmi_match(), because they use |
| * substring matching. We don't want to affect the "701SD" |
| * and "701SDX" models, because they do support S.H.E. |
| */ |
| if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) { |
| eeepc->cpufv_disabled = true; |
| pr_info("model %s does not officially support setting cpu " |
| "speed\n", model); |
| pr_info("cpufv disabled to avoid instability\n"); |
| } |
| |
| /* |
| * Blacklist for wlan hotplug |
| * |
| * Eeepc 1005HA doesn't work like others models and don't need the |
| * hotplug code. In fact, current hotplug code seems to unplug another |
| * device... |
| */ |
| if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0 || |
| strcmp(model, "1005PE") == 0) { |
| eeepc->hotplug_disabled = true; |
| pr_info("wlan hotplug disabled\n"); |
| } |
| } |
| |
| static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name) |
| { |
| int dummy; |
| |
| /* Some BIOSes do not report cm although it is available. |
| Check if cm_getv[cm] works and, if yes, assume cm should be set. */ |
| if (!(eeepc->cm_supported & (1 << cm)) |
| && !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) { |
| pr_info("%s (%x) not reported by BIOS," |
| " enabling anyway\n", name, 1 << cm); |
| eeepc->cm_supported |= 1 << cm; |
| } |
| } |
| |
| static void cmsg_quirks(struct eeepc_laptop *eeepc) |
| { |
| cmsg_quirk(eeepc, CM_ASL_LID, "LID"); |
| cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE"); |
| cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER"); |
| cmsg_quirk(eeepc, CM_ASL_TPD, "TPD"); |
| } |
| |
| static int __devinit eeepc_acpi_init(struct eeepc_laptop *eeepc) |
| { |
| unsigned int init_flags; |
| int result; |
| |
| result = acpi_bus_get_status(eeepc->device); |
| if (result) |
| return result; |
| if (!eeepc->device->status.present) { |
| pr_err("Hotkey device not present, aborting\n"); |
| return -ENODEV; |
| } |
| |
| init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH; |
| pr_notice("Hotkey init flags 0x%x\n", init_flags); |
| |
| if (write_acpi_int(eeepc->handle, "INIT", init_flags)) { |
| pr_err("Hotkey initialization failed\n"); |
| return -ENODEV; |
| } |
| |
| /* get control methods supported */ |
| if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) { |
| pr_err("Get control methods supported failed\n"); |
| return -ENODEV; |
| } |
| cmsg_quirks(eeepc); |
| pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported); |
| |
| return 0; |
| } |
| |
| static void __devinit eeepc_enable_camera(struct eeepc_laptop *eeepc) |
| { |
| /* |
| * If the following call to set_acpi() fails, it's because there's no |
| * camera so we can ignore the error. |
| */ |
| if (get_acpi(eeepc, CM_ASL_CAMERA) == 0) |
| set_acpi(eeepc, CM_ASL_CAMERA, 1); |
| } |
| |
| static bool eeepc_device_present; |
| |
| static int __devinit eeepc_acpi_add(struct acpi_device *device) |
| { |
| struct eeepc_laptop *eeepc; |
| int result; |
| |
| pr_notice(EEEPC_LAPTOP_NAME "\n"); |
| eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL); |
| if (!eeepc) |
| return -ENOMEM; |
| eeepc->handle = device->handle; |
| strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME); |
| strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS); |
| device->driver_data = eeepc; |
| eeepc->device = device; |
| |
| eeepc->hotplug_disabled = hotplug_disabled; |
| |
| eeepc_dmi_check(eeepc); |
| |
| result = eeepc_acpi_init(eeepc); |
| if (result) |
| goto fail_platform; |
| eeepc_enable_camera(eeepc); |
| |
| /* |
| * Register the platform device first. It is used as a parent for the |
| * sub-devices below. |
| * |
| * Note that if there are multiple instances of this ACPI device it |
| * will bail out, because the platform device is registered with a |
| * fixed name. Of course it doesn't make sense to have more than one, |
| * and machine-specific scripts find the fixed name convenient. But |
| * It's also good for us to exclude multiple instances because both |
| * our hwmon and our wlan rfkill subdevice use global ACPI objects |
| * (the EC and the wlan PCI slot respectively). |
| */ |
| result = eeepc_platform_init(eeepc); |
| if (result) |
| goto fail_platform; |
| |
| if (!acpi_video_backlight_support()) { |
| result = eeepc_backlight_init(eeepc); |
| if (result) |
| goto fail_backlight; |
| } else |
| pr_info("Backlight controlled by ACPI video driver\n"); |
| |
| result = eeepc_input_init(eeepc); |
| if (result) |
| goto fail_input; |
| |
| result = eeepc_hwmon_init(eeepc); |
| if (result) |
| goto fail_hwmon; |
| |
| result = eeepc_led_init(eeepc); |
| if (result) |
| goto fail_led; |
| |
| result = eeepc_rfkill_init(eeepc); |
| if (result) |
| goto fail_rfkill; |
| |
| eeepc_device_present = true; |
| return 0; |
| |
| fail_rfkill: |
| eeepc_led_exit(eeepc); |
| fail_led: |
| eeepc_hwmon_exit(eeepc); |
| fail_hwmon: |
| eeepc_input_exit(eeepc); |
| fail_input: |
| eeepc_backlight_exit(eeepc); |
| fail_backlight: |
| eeepc_platform_exit(eeepc); |
| fail_platform: |
| kfree(eeepc); |
| |
| return result; |
| } |
| |
| static int eeepc_acpi_remove(struct acpi_device *device, int type) |
| { |
| struct eeepc_laptop *eeepc = acpi_driver_data(device); |
| |
| eeepc_backlight_exit(eeepc); |
| eeepc_rfkill_exit(eeepc); |
| eeepc_input_exit(eeepc); |
| eeepc_hwmon_exit(eeepc); |
| eeepc_led_exit(eeepc); |
| eeepc_platform_exit(eeepc); |
| |
| kfree(eeepc); |
| return 0; |
| } |
| |
| |
| static const struct acpi_device_id eeepc_device_ids[] = { |
| {EEEPC_ACPI_HID, 0}, |
| {"", 0}, |
| }; |
| MODULE_DEVICE_TABLE(acpi, eeepc_device_ids); |
| |
| static struct acpi_driver eeepc_acpi_driver = { |
| .name = EEEPC_LAPTOP_NAME, |
| .class = EEEPC_ACPI_CLASS, |
| .owner = THIS_MODULE, |
| .ids = eeepc_device_ids, |
| .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, |
| .ops = { |
| .add = eeepc_acpi_add, |
| .remove = eeepc_acpi_remove, |
| .notify = eeepc_acpi_notify, |
| }, |
| }; |
| |
| |
| static int __init eeepc_laptop_init(void) |
| { |
| int result; |
| |
| result = platform_driver_register(&platform_driver); |
| if (result < 0) |
| return result; |
| |
| result = acpi_bus_register_driver(&eeepc_acpi_driver); |
| if (result < 0) |
| goto fail_acpi_driver; |
| |
| if (!eeepc_device_present) { |
| result = -ENODEV; |
| goto fail_no_device; |
| } |
| |
| return 0; |
| |
| fail_no_device: |
| acpi_bus_unregister_driver(&eeepc_acpi_driver); |
| fail_acpi_driver: |
| platform_driver_unregister(&platform_driver); |
| return result; |
| } |
| |
| static void __exit eeepc_laptop_exit(void) |
| { |
| acpi_bus_unregister_driver(&eeepc_acpi_driver); |
| platform_driver_unregister(&platform_driver); |
| } |
| |
| module_init(eeepc_laptop_init); |
| module_exit(eeepc_laptop_exit); |