| /* |
| * imon.c: input and display driver for SoundGraph iMON IR/VFD/LCD |
| * |
| * Copyright(C) 2009 Jarod Wilson <jarod@wilsonet.com> |
| * Portions based on the original lirc_imon driver, |
| * Copyright(C) 2004 Venky Raju(dev@venky.ws) |
| * |
| * Huge thanks to R. Geoff Newbury for invaluable debugging on the |
| * 0xffdc iMON devices, and for sending me one to hack on, without |
| * which the support for them wouldn't be nearly as good. Thanks |
| * also to the numerous 0xffdc device owners that tested auto-config |
| * support for me and provided debug dumps from their devices. |
| * |
| * imon 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., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #include <linux/errno.h> |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/slab.h> |
| #include <linux/uaccess.h> |
| |
| #include <linux/input.h> |
| #include <linux/usb.h> |
| #include <linux/usb/input.h> |
| #include <media/ir-core.h> |
| |
| #include <linux/time.h> |
| #include <linux/timer.h> |
| |
| #define MOD_AUTHOR "Jarod Wilson <jarod@wilsonet.com>" |
| #define MOD_DESC "Driver for SoundGraph iMON MultiMedia IR/Display" |
| #define MOD_NAME "imon" |
| #define MOD_VERSION "0.9.1" |
| |
| #define DISPLAY_MINOR_BASE 144 |
| #define DEVICE_NAME "lcd%d" |
| |
| #define BUF_CHUNK_SIZE 8 |
| #define BUF_SIZE 128 |
| |
| #define BIT_DURATION 250 /* each bit received is 250us */ |
| |
| #define IMON_CLOCK_ENABLE_PACKETS 2 |
| |
| /*** P R O T O T Y P E S ***/ |
| |
| /* USB Callback prototypes */ |
| static int imon_probe(struct usb_interface *interface, |
| const struct usb_device_id *id); |
| static void imon_disconnect(struct usb_interface *interface); |
| static void usb_rx_callback_intf0(struct urb *urb); |
| static void usb_rx_callback_intf1(struct urb *urb); |
| static void usb_tx_callback(struct urb *urb); |
| |
| /* suspend/resume support */ |
| static int imon_resume(struct usb_interface *intf); |
| static int imon_suspend(struct usb_interface *intf, pm_message_t message); |
| |
| /* Display file_operations function prototypes */ |
| static int display_open(struct inode *inode, struct file *file); |
| static int display_close(struct inode *inode, struct file *file); |
| |
| /* VFD write operation */ |
| static ssize_t vfd_write(struct file *file, const char *buf, |
| size_t n_bytes, loff_t *pos); |
| |
| /* LCD file_operations override function prototypes */ |
| static ssize_t lcd_write(struct file *file, const char *buf, |
| size_t n_bytes, loff_t *pos); |
| |
| /*** G L O B A L S ***/ |
| |
| struct imon_context { |
| struct device *dev; |
| struct ir_dev_props *props; |
| struct ir_input_dev *ir; |
| /* Newer devices have two interfaces */ |
| struct usb_device *usbdev_intf0; |
| struct usb_device *usbdev_intf1; |
| |
| bool display_supported; /* not all controllers do */ |
| bool display_isopen; /* display port has been opened */ |
| bool rf_device; /* true if iMON 2.4G LT/DT RF device */ |
| bool rf_isassociating; /* RF remote associating */ |
| bool dev_present_intf0; /* USB device presence, interface 0 */ |
| bool dev_present_intf1; /* USB device presence, interface 1 */ |
| |
| struct mutex lock; /* to lock this object */ |
| wait_queue_head_t remove_ok; /* For unexpected USB disconnects */ |
| |
| struct usb_endpoint_descriptor *rx_endpoint_intf0; |
| struct usb_endpoint_descriptor *rx_endpoint_intf1; |
| struct usb_endpoint_descriptor *tx_endpoint; |
| struct urb *rx_urb_intf0; |
| struct urb *rx_urb_intf1; |
| struct urb *tx_urb; |
| bool tx_control; |
| unsigned char usb_rx_buf[8]; |
| unsigned char usb_tx_buf[8]; |
| |
| struct tx_t { |
| unsigned char data_buf[35]; /* user data buffer */ |
| struct completion finished; /* wait for write to finish */ |
| bool busy; /* write in progress */ |
| int status; /* status of tx completion */ |
| } tx; |
| |
| u16 vendor; /* usb vendor ID */ |
| u16 product; /* usb product ID */ |
| |
| struct input_dev *idev; /* input device for remote */ |
| struct input_dev *touch; /* input device for touchscreen */ |
| |
| u32 kc; /* current input keycode */ |
| u32 last_keycode; /* last reported input keycode */ |
| u64 ir_type; /* iMON or MCE (RC6) IR protocol? */ |
| u8 mce_toggle_bit; /* last mce toggle bit */ |
| bool release_code; /* some keys send a release code */ |
| |
| u8 display_type; /* store the display type */ |
| bool pad_mouse; /* toggle kbd(0)/mouse(1) mode */ |
| |
| char name_idev[128]; /* input device name */ |
| char phys_idev[64]; /* input device phys path */ |
| struct timer_list itimer; /* input device timer, need for rc6 */ |
| |
| char name_touch[128]; /* touch screen name */ |
| char phys_touch[64]; /* touch screen phys path */ |
| struct timer_list ttimer; /* touch screen timer */ |
| int touch_x; /* x coordinate on touchscreen */ |
| int touch_y; /* y coordinate on touchscreen */ |
| }; |
| |
| #define TOUCH_TIMEOUT (HZ/30) |
| |
| /* vfd character device file operations */ |
| static const struct file_operations vfd_fops = { |
| .owner = THIS_MODULE, |
| .open = &display_open, |
| .write = &vfd_write, |
| .release = &display_close |
| }; |
| |
| /* lcd character device file operations */ |
| static const struct file_operations lcd_fops = { |
| .owner = THIS_MODULE, |
| .open = &display_open, |
| .write = &lcd_write, |
| .release = &display_close |
| }; |
| |
| enum { |
| IMON_DISPLAY_TYPE_AUTO = 0, |
| IMON_DISPLAY_TYPE_VFD = 1, |
| IMON_DISPLAY_TYPE_LCD = 2, |
| IMON_DISPLAY_TYPE_VGA = 3, |
| IMON_DISPLAY_TYPE_NONE = 4, |
| }; |
| |
| enum { |
| IMON_KEY_IMON = 0, |
| IMON_KEY_MCE = 1, |
| IMON_KEY_PANEL = 2, |
| }; |
| |
| /* |
| * USB Device ID for iMON USB Control Boards |
| * |
| * The Windows drivers contain 6 different inf files, more or less one for |
| * each new device until the 0x0034-0x0046 devices, which all use the same |
| * driver. Some of the devices in the 34-46 range haven't been definitively |
| * identified yet. Early devices have either a TriGem Computer, Inc. or a |
| * Samsung vendor ID (0x0aa8 and 0x04e8 respectively), while all later |
| * devices use the SoundGraph vendor ID (0x15c2). This driver only supports |
| * the ffdc and later devices, which do onboard decoding. |
| */ |
| static struct usb_device_id imon_usb_id_table[] = { |
| /* |
| * Several devices with this same device ID, all use iMON_PAD.inf |
| * SoundGraph iMON PAD (IR & VFD) |
| * SoundGraph iMON PAD (IR & LCD) |
| * SoundGraph iMON Knob (IR only) |
| */ |
| { USB_DEVICE(0x15c2, 0xffdc) }, |
| |
| /* |
| * Newer devices, all driven by the latest iMON Windows driver, full |
| * list of device IDs extracted via 'strings Setup/data1.hdr |grep 15c2' |
| * Need user input to fill in details on unknown devices. |
| */ |
| /* SoundGraph iMON OEM Touch LCD (IR & 7" VGA LCD) */ |
| { USB_DEVICE(0x15c2, 0x0034) }, |
| /* SoundGraph iMON OEM Touch LCD (IR & 4.3" VGA LCD) */ |
| { USB_DEVICE(0x15c2, 0x0035) }, |
| /* SoundGraph iMON OEM VFD (IR & VFD) */ |
| { USB_DEVICE(0x15c2, 0x0036) }, |
| /* device specifics unknown */ |
| { USB_DEVICE(0x15c2, 0x0037) }, |
| /* SoundGraph iMON OEM LCD (IR & LCD) */ |
| { USB_DEVICE(0x15c2, 0x0038) }, |
| /* SoundGraph iMON UltraBay (IR & LCD) */ |
| { USB_DEVICE(0x15c2, 0x0039) }, |
| /* device specifics unknown */ |
| { USB_DEVICE(0x15c2, 0x003a) }, |
| /* device specifics unknown */ |
| { USB_DEVICE(0x15c2, 0x003b) }, |
| /* SoundGraph iMON OEM Inside (IR only) */ |
| { USB_DEVICE(0x15c2, 0x003c) }, |
| /* device specifics unknown */ |
| { USB_DEVICE(0x15c2, 0x003d) }, |
| /* device specifics unknown */ |
| { USB_DEVICE(0x15c2, 0x003e) }, |
| /* device specifics unknown */ |
| { USB_DEVICE(0x15c2, 0x003f) }, |
| /* device specifics unknown */ |
| { USB_DEVICE(0x15c2, 0x0040) }, |
| /* SoundGraph iMON MINI (IR only) */ |
| { USB_DEVICE(0x15c2, 0x0041) }, |
| /* Antec Veris Multimedia Station EZ External (IR only) */ |
| { USB_DEVICE(0x15c2, 0x0042) }, |
| /* Antec Veris Multimedia Station Basic Internal (IR only) */ |
| { USB_DEVICE(0x15c2, 0x0043) }, |
| /* Antec Veris Multimedia Station Elite (IR & VFD) */ |
| { USB_DEVICE(0x15c2, 0x0044) }, |
| /* Antec Veris Multimedia Station Premiere (IR & LCD) */ |
| { USB_DEVICE(0x15c2, 0x0045) }, |
| /* device specifics unknown */ |
| { USB_DEVICE(0x15c2, 0x0046) }, |
| {} |
| }; |
| |
| /* USB Device data */ |
| static struct usb_driver imon_driver = { |
| .name = MOD_NAME, |
| .probe = imon_probe, |
| .disconnect = imon_disconnect, |
| .suspend = imon_suspend, |
| .resume = imon_resume, |
| .id_table = imon_usb_id_table, |
| }; |
| |
| static struct usb_class_driver imon_vfd_class = { |
| .name = DEVICE_NAME, |
| .fops = &vfd_fops, |
| .minor_base = DISPLAY_MINOR_BASE, |
| }; |
| |
| static struct usb_class_driver imon_lcd_class = { |
| .name = DEVICE_NAME, |
| .fops = &lcd_fops, |
| .minor_base = DISPLAY_MINOR_BASE, |
| }; |
| |
| /* imon receiver front panel/knob key table */ |
| static const struct { |
| u64 hw_code; |
| u32 keycode; |
| } imon_panel_key_table[] = { |
| { 0x000000000f00ffeell, KEY_PROG1 }, /* Go */ |
| { 0x000000001f00ffeell, KEY_AUDIO }, |
| { 0x000000002000ffeell, KEY_VIDEO }, |
| { 0x000000002100ffeell, KEY_CAMERA }, |
| { 0x000000002700ffeell, KEY_DVD }, |
| { 0x000000002300ffeell, KEY_TV }, |
| { 0x000000000500ffeell, KEY_PREVIOUS }, |
| { 0x000000000700ffeell, KEY_REWIND }, |
| { 0x000000000400ffeell, KEY_STOP }, |
| { 0x000000003c00ffeell, KEY_PLAYPAUSE }, |
| { 0x000000000800ffeell, KEY_FASTFORWARD }, |
| { 0x000000000600ffeell, KEY_NEXT }, |
| { 0x000000010000ffeell, KEY_RIGHT }, |
| { 0x000001000000ffeell, KEY_LEFT }, |
| { 0x000000003d00ffeell, KEY_SELECT }, |
| { 0x000100000000ffeell, KEY_VOLUMEUP }, |
| { 0x010000000000ffeell, KEY_VOLUMEDOWN }, |
| { 0x000000000100ffeell, KEY_MUTE }, |
| /* iMON Knob values */ |
| { 0x000100ffffffffeell, KEY_VOLUMEUP }, |
| { 0x010000ffffffffeell, KEY_VOLUMEDOWN }, |
| { 0x000008ffffffffeell, KEY_MUTE }, |
| }; |
| |
| /* to prevent races between open() and disconnect(), probing, etc */ |
| static DEFINE_MUTEX(driver_lock); |
| |
| /* Module bookkeeping bits */ |
| MODULE_AUTHOR(MOD_AUTHOR); |
| MODULE_DESCRIPTION(MOD_DESC); |
| MODULE_VERSION(MOD_VERSION); |
| MODULE_LICENSE("GPL"); |
| MODULE_DEVICE_TABLE(usb, imon_usb_id_table); |
| |
| static bool debug; |
| module_param(debug, bool, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(debug, "Debug messages: 0=no, 1=yes(default: no)"); |
| |
| /* lcd, vfd, vga or none? should be auto-detected, but can be overridden... */ |
| static int display_type; |
| module_param(display_type, int, S_IRUGO); |
| MODULE_PARM_DESC(display_type, "Type of attached display. 0=autodetect, " |
| "1=vfd, 2=lcd, 3=vga, 4=none (default: autodetect)"); |
| |
| static int pad_stabilize = 1; |
| module_param(pad_stabilize, int, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(pad_stabilize, "Apply stabilization algorithm to iMON PAD " |
| "presses in arrow key mode. 0=disable, 1=enable (default)."); |
| |
| /* |
| * In certain use cases, mouse mode isn't really helpful, and could actually |
| * cause confusion, so allow disabling it when the IR device is open. |
| */ |
| static bool nomouse; |
| module_param(nomouse, bool, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(nomouse, "Disable mouse input device mode when IR device is " |
| "open. 0=don't disable, 1=disable. (default: don't disable)"); |
| |
| /* threshold at which a pad push registers as an arrow key in kbd mode */ |
| static int pad_thresh; |
| module_param(pad_thresh, int, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(pad_thresh, "Threshold at which a pad push registers as an " |
| "arrow key in kbd mode (default: 28)"); |
| |
| |
| static void free_imon_context(struct imon_context *ictx) |
| { |
| struct device *dev = ictx->dev; |
| |
| usb_free_urb(ictx->tx_urb); |
| usb_free_urb(ictx->rx_urb_intf0); |
| usb_free_urb(ictx->rx_urb_intf1); |
| kfree(ictx); |
| |
| dev_dbg(dev, "%s: iMON context freed\n", __func__); |
| } |
| |
| /** |
| * Called when the Display device (e.g. /dev/lcd0) |
| * is opened by the application. |
| */ |
| static int display_open(struct inode *inode, struct file *file) |
| { |
| struct usb_interface *interface; |
| struct imon_context *ictx = NULL; |
| int subminor; |
| int retval = 0; |
| |
| /* prevent races with disconnect */ |
| mutex_lock(&driver_lock); |
| |
| subminor = iminor(inode); |
| interface = usb_find_interface(&imon_driver, subminor); |
| if (!interface) { |
| err("%s: could not find interface for minor %d", |
| __func__, subminor); |
| retval = -ENODEV; |
| goto exit; |
| } |
| ictx = usb_get_intfdata(interface); |
| |
| if (!ictx) { |
| err("%s: no context found for minor %d", __func__, subminor); |
| retval = -ENODEV; |
| goto exit; |
| } |
| |
| mutex_lock(&ictx->lock); |
| |
| if (!ictx->display_supported) { |
| err("%s: display not supported by device", __func__); |
| retval = -ENODEV; |
| } else if (ictx->display_isopen) { |
| err("%s: display port is already open", __func__); |
| retval = -EBUSY; |
| } else { |
| ictx->display_isopen = true; |
| file->private_data = ictx; |
| dev_dbg(ictx->dev, "display port opened\n"); |
| } |
| |
| mutex_unlock(&ictx->lock); |
| |
| exit: |
| mutex_unlock(&driver_lock); |
| return retval; |
| } |
| |
| /** |
| * Called when the display device (e.g. /dev/lcd0) |
| * is closed by the application. |
| */ |
| static int display_close(struct inode *inode, struct file *file) |
| { |
| struct imon_context *ictx = NULL; |
| int retval = 0; |
| |
| ictx = file->private_data; |
| |
| if (!ictx) { |
| err("%s: no context for device", __func__); |
| return -ENODEV; |
| } |
| |
| mutex_lock(&ictx->lock); |
| |
| if (!ictx->display_supported) { |
| err("%s: display not supported by device", __func__); |
| retval = -ENODEV; |
| } else if (!ictx->display_isopen) { |
| err("%s: display is not open", __func__); |
| retval = -EIO; |
| } else { |
| ictx->display_isopen = false; |
| dev_dbg(ictx->dev, "display port closed\n"); |
| if (!ictx->dev_present_intf0) { |
| /* |
| * Device disconnected before close and IR port is not |
| * open. If IR port is open, context will be deleted by |
| * ir_close. |
| */ |
| mutex_unlock(&ictx->lock); |
| free_imon_context(ictx); |
| return retval; |
| } |
| } |
| |
| mutex_unlock(&ictx->lock); |
| return retval; |
| } |
| |
| /** |
| * Sends a packet to the device -- this function must be called |
| * with ictx->lock held. |
| */ |
| static int send_packet(struct imon_context *ictx) |
| { |
| unsigned int pipe; |
| unsigned long timeout; |
| int interval = 0; |
| int retval = 0; |
| struct usb_ctrlrequest *control_req = NULL; |
| |
| /* Check if we need to use control or interrupt urb */ |
| if (!ictx->tx_control) { |
| pipe = usb_sndintpipe(ictx->usbdev_intf0, |
| ictx->tx_endpoint->bEndpointAddress); |
| interval = ictx->tx_endpoint->bInterval; |
| |
| usb_fill_int_urb(ictx->tx_urb, ictx->usbdev_intf0, pipe, |
| ictx->usb_tx_buf, |
| sizeof(ictx->usb_tx_buf), |
| usb_tx_callback, ictx, interval); |
| |
| ictx->tx_urb->actual_length = 0; |
| } else { |
| /* fill request into kmalloc'ed space: */ |
| control_req = kmalloc(sizeof(struct usb_ctrlrequest), |
| GFP_KERNEL); |
| if (control_req == NULL) |
| return -ENOMEM; |
| |
| /* setup packet is '21 09 0200 0001 0008' */ |
| control_req->bRequestType = 0x21; |
| control_req->bRequest = 0x09; |
| control_req->wValue = cpu_to_le16(0x0200); |
| control_req->wIndex = cpu_to_le16(0x0001); |
| control_req->wLength = cpu_to_le16(0x0008); |
| |
| /* control pipe is endpoint 0x00 */ |
| pipe = usb_sndctrlpipe(ictx->usbdev_intf0, 0); |
| |
| /* build the control urb */ |
| usb_fill_control_urb(ictx->tx_urb, ictx->usbdev_intf0, |
| pipe, (unsigned char *)control_req, |
| ictx->usb_tx_buf, |
| sizeof(ictx->usb_tx_buf), |
| usb_tx_callback, ictx); |
| ictx->tx_urb->actual_length = 0; |
| } |
| |
| init_completion(&ictx->tx.finished); |
| ictx->tx.busy = true; |
| smp_rmb(); /* ensure later readers know we're busy */ |
| |
| retval = usb_submit_urb(ictx->tx_urb, GFP_KERNEL); |
| if (retval) { |
| ictx->tx.busy = false; |
| smp_rmb(); /* ensure later readers know we're not busy */ |
| err("%s: error submitting urb(%d)", __func__, retval); |
| } else { |
| /* Wait for transmission to complete (or abort) */ |
| mutex_unlock(&ictx->lock); |
| retval = wait_for_completion_interruptible( |
| &ictx->tx.finished); |
| if (retval) |
| err("%s: task interrupted", __func__); |
| mutex_lock(&ictx->lock); |
| |
| retval = ictx->tx.status; |
| if (retval) |
| err("%s: packet tx failed (%d)", __func__, retval); |
| } |
| |
| kfree(control_req); |
| |
| /* |
| * Induce a mandatory 5ms delay before returning, as otherwise, |
| * send_packet can get called so rapidly as to overwhelm the device, |
| * particularly on faster systems and/or those with quirky usb. |
| */ |
| timeout = msecs_to_jiffies(5); |
| set_current_state(TASK_UNINTERRUPTIBLE); |
| schedule_timeout(timeout); |
| |
| return retval; |
| } |
| |
| /** |
| * Sends an associate packet to the iMON 2.4G. |
| * |
| * This might not be such a good idea, since it has an id collision with |
| * some versions of the "IR & VFD" combo. The only way to determine if it |
| * is an RF version is to look at the product description string. (Which |
| * we currently do not fetch). |
| */ |
| static int send_associate_24g(struct imon_context *ictx) |
| { |
| int retval; |
| const unsigned char packet[8] = { 0x01, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x20 }; |
| |
| if (!ictx) { |
| err("%s: no context for device", __func__); |
| return -ENODEV; |
| } |
| |
| if (!ictx->dev_present_intf0) { |
| err("%s: no iMON device present", __func__); |
| return -ENODEV; |
| } |
| |
| memcpy(ictx->usb_tx_buf, packet, sizeof(packet)); |
| retval = send_packet(ictx); |
| |
| return retval; |
| } |
| |
| /** |
| * Sends packets to setup and show clock on iMON display |
| * |
| * Arguments: year - last 2 digits of year, month - 1..12, |
| * day - 1..31, dow - day of the week (0-Sun...6-Sat), |
| * hour - 0..23, minute - 0..59, second - 0..59 |
| */ |
| static int send_set_imon_clock(struct imon_context *ictx, |
| unsigned int year, unsigned int month, |
| unsigned int day, unsigned int dow, |
| unsigned int hour, unsigned int minute, |
| unsigned int second) |
| { |
| unsigned char clock_enable_pkt[IMON_CLOCK_ENABLE_PACKETS][8]; |
| int retval = 0; |
| int i; |
| |
| if (!ictx) { |
| err("%s: no context for device", __func__); |
| return -ENODEV; |
| } |
| |
| switch (ictx->display_type) { |
| case IMON_DISPLAY_TYPE_LCD: |
| clock_enable_pkt[0][0] = 0x80; |
| clock_enable_pkt[0][1] = year; |
| clock_enable_pkt[0][2] = month-1; |
| clock_enable_pkt[0][3] = day; |
| clock_enable_pkt[0][4] = hour; |
| clock_enable_pkt[0][5] = minute; |
| clock_enable_pkt[0][6] = second; |
| |
| clock_enable_pkt[1][0] = 0x80; |
| clock_enable_pkt[1][1] = 0; |
| clock_enable_pkt[1][2] = 0; |
| clock_enable_pkt[1][3] = 0; |
| clock_enable_pkt[1][4] = 0; |
| clock_enable_pkt[1][5] = 0; |
| clock_enable_pkt[1][6] = 0; |
| |
| if (ictx->product == 0xffdc) { |
| clock_enable_pkt[0][7] = 0x50; |
| clock_enable_pkt[1][7] = 0x51; |
| } else { |
| clock_enable_pkt[0][7] = 0x88; |
| clock_enable_pkt[1][7] = 0x8a; |
| } |
| |
| break; |
| |
| case IMON_DISPLAY_TYPE_VFD: |
| clock_enable_pkt[0][0] = year; |
| clock_enable_pkt[0][1] = month-1; |
| clock_enable_pkt[0][2] = day; |
| clock_enable_pkt[0][3] = dow; |
| clock_enable_pkt[0][4] = hour; |
| clock_enable_pkt[0][5] = minute; |
| clock_enable_pkt[0][6] = second; |
| clock_enable_pkt[0][7] = 0x40; |
| |
| clock_enable_pkt[1][0] = 0; |
| clock_enable_pkt[1][1] = 0; |
| clock_enable_pkt[1][2] = 1; |
| clock_enable_pkt[1][3] = 0; |
| clock_enable_pkt[1][4] = 0; |
| clock_enable_pkt[1][5] = 0; |
| clock_enable_pkt[1][6] = 0; |
| clock_enable_pkt[1][7] = 0x42; |
| |
| break; |
| |
| default: |
| return -ENODEV; |
| } |
| |
| for (i = 0; i < IMON_CLOCK_ENABLE_PACKETS; i++) { |
| memcpy(ictx->usb_tx_buf, clock_enable_pkt[i], 8); |
| retval = send_packet(ictx); |
| if (retval) { |
| err("%s: send_packet failed for packet %d", |
| __func__, i); |
| break; |
| } |
| } |
| |
| return retval; |
| } |
| |
| /** |
| * These are the sysfs functions to handle the association on the iMON 2.4G LT. |
| */ |
| static ssize_t show_associate_remote(struct device *d, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct imon_context *ictx = dev_get_drvdata(d); |
| |
| if (!ictx) |
| return -ENODEV; |
| |
| mutex_lock(&ictx->lock); |
| if (ictx->rf_isassociating) |
| strcpy(buf, "associating\n"); |
| else |
| strcpy(buf, "closed\n"); |
| |
| dev_info(d, "Visit http://www.lirc.org/html/imon-24g.html for " |
| "instructions on how to associate your iMON 2.4G DT/LT " |
| "remote\n"); |
| mutex_unlock(&ictx->lock); |
| return strlen(buf); |
| } |
| |
| static ssize_t store_associate_remote(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct imon_context *ictx; |
| |
| ictx = dev_get_drvdata(d); |
| |
| if (!ictx) |
| return -ENODEV; |
| |
| mutex_lock(&ictx->lock); |
| ictx->rf_isassociating = true; |
| send_associate_24g(ictx); |
| mutex_unlock(&ictx->lock); |
| |
| return count; |
| } |
| |
| /** |
| * sysfs functions to control internal imon clock |
| */ |
| static ssize_t show_imon_clock(struct device *d, |
| struct device_attribute *attr, char *buf) |
| { |
| struct imon_context *ictx = dev_get_drvdata(d); |
| size_t len; |
| |
| if (!ictx) |
| return -ENODEV; |
| |
| mutex_lock(&ictx->lock); |
| |
| if (!ictx->display_supported) { |
| len = snprintf(buf, PAGE_SIZE, "Not supported."); |
| } else { |
| len = snprintf(buf, PAGE_SIZE, |
| "To set the clock on your iMON display:\n" |
| "# date \"+%%y %%m %%d %%w %%H %%M %%S\" > imon_clock\n" |
| "%s", ictx->display_isopen ? |
| "\nNOTE: imon device must be closed\n" : ""); |
| } |
| |
| mutex_unlock(&ictx->lock); |
| |
| return len; |
| } |
| |
| static ssize_t store_imon_clock(struct device *d, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct imon_context *ictx = dev_get_drvdata(d); |
| ssize_t retval; |
| unsigned int year, month, day, dow, hour, minute, second; |
| |
| if (!ictx) |
| return -ENODEV; |
| |
| mutex_lock(&ictx->lock); |
| |
| if (!ictx->display_supported) { |
| retval = -ENODEV; |
| goto exit; |
| } else if (ictx->display_isopen) { |
| retval = -EBUSY; |
| goto exit; |
| } |
| |
| if (sscanf(buf, "%u %u %u %u %u %u %u", &year, &month, &day, &dow, |
| &hour, &minute, &second) != 7) { |
| retval = -EINVAL; |
| goto exit; |
| } |
| |
| if ((month < 1 || month > 12) || |
| (day < 1 || day > 31) || (dow > 6) || |
| (hour > 23) || (minute > 59) || (second > 59)) { |
| retval = -EINVAL; |
| goto exit; |
| } |
| |
| retval = send_set_imon_clock(ictx, year, month, day, dow, |
| hour, minute, second); |
| if (retval) |
| goto exit; |
| |
| retval = count; |
| exit: |
| mutex_unlock(&ictx->lock); |
| |
| return retval; |
| } |
| |
| |
| static DEVICE_ATTR(imon_clock, S_IWUSR | S_IRUGO, show_imon_clock, |
| store_imon_clock); |
| |
| static DEVICE_ATTR(associate_remote, S_IWUSR | S_IRUGO, show_associate_remote, |
| store_associate_remote); |
| |
| static struct attribute *imon_display_sysfs_entries[] = { |
| &dev_attr_imon_clock.attr, |
| NULL |
| }; |
| |
| static struct attribute_group imon_display_attribute_group = { |
| .attrs = imon_display_sysfs_entries |
| }; |
| |
| static struct attribute *imon_rf_sysfs_entries[] = { |
| &dev_attr_associate_remote.attr, |
| NULL |
| }; |
| |
| static struct attribute_group imon_rf_attribute_group = { |
| .attrs = imon_rf_sysfs_entries |
| }; |
| |
| /** |
| * Writes data to the VFD. The iMON VFD is 2x16 characters |
| * and requires data in 5 consecutive USB interrupt packets, |
| * each packet but the last carrying 7 bytes. |
| * |
| * I don't know if the VFD board supports features such as |
| * scrolling, clearing rows, blanking, etc. so at |
| * the caller must provide a full screen of data. If fewer |
| * than 32 bytes are provided spaces will be appended to |
| * generate a full screen. |
| */ |
| static ssize_t vfd_write(struct file *file, const char *buf, |
| size_t n_bytes, loff_t *pos) |
| { |
| int i; |
| int offset; |
| int seq; |
| int retval = 0; |
| struct imon_context *ictx; |
| const unsigned char vfd_packet6[] = { |
| 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF }; |
| |
| ictx = file->private_data; |
| if (!ictx) { |
| err("%s: no context for device", __func__); |
| return -ENODEV; |
| } |
| |
| mutex_lock(&ictx->lock); |
| |
| if (!ictx->dev_present_intf0) { |
| err("%s: no iMON device present", __func__); |
| retval = -ENODEV; |
| goto exit; |
| } |
| |
| if (n_bytes <= 0 || n_bytes > 32) { |
| err("%s: invalid payload size", __func__); |
| retval = -EINVAL; |
| goto exit; |
| } |
| |
| if (copy_from_user(ictx->tx.data_buf, buf, n_bytes)) { |
| retval = -EFAULT; |
| goto exit; |
| } |
| |
| /* Pad with spaces */ |
| for (i = n_bytes; i < 32; ++i) |
| ictx->tx.data_buf[i] = ' '; |
| |
| for (i = 32; i < 35; ++i) |
| ictx->tx.data_buf[i] = 0xFF; |
| |
| offset = 0; |
| seq = 0; |
| |
| do { |
| memcpy(ictx->usb_tx_buf, ictx->tx.data_buf + offset, 7); |
| ictx->usb_tx_buf[7] = (unsigned char) seq; |
| |
| retval = send_packet(ictx); |
| if (retval) { |
| err("%s: send packet failed for packet #%d", |
| __func__, seq/2); |
| goto exit; |
| } else { |
| seq += 2; |
| offset += 7; |
| } |
| |
| } while (offset < 35); |
| |
| /* Send packet #6 */ |
| memcpy(ictx->usb_tx_buf, &vfd_packet6, sizeof(vfd_packet6)); |
| ictx->usb_tx_buf[7] = (unsigned char) seq; |
| retval = send_packet(ictx); |
| if (retval) |
| err("%s: send packet failed for packet #%d", |
| __func__, seq / 2); |
| |
| exit: |
| mutex_unlock(&ictx->lock); |
| |
| return (!retval) ? n_bytes : retval; |
| } |
| |
| /** |
| * Writes data to the LCD. The iMON OEM LCD screen expects 8-byte |
| * packets. We accept data as 16 hexadecimal digits, followed by a |
| * newline (to make it easy to drive the device from a command-line |
| * -- even though the actual binary data is a bit complicated). |
| * |
| * The device itself is not a "traditional" text-mode display. It's |
| * actually a 16x96 pixel bitmap display. That means if you want to |
| * display text, you've got to have your own "font" and translate the |
| * text into bitmaps for display. This is really flexible (you can |
| * display whatever diacritics you need, and so on), but it's also |
| * a lot more complicated than most LCDs... |
| */ |
| static ssize_t lcd_write(struct file *file, const char *buf, |
| size_t n_bytes, loff_t *pos) |
| { |
| int retval = 0; |
| struct imon_context *ictx; |
| |
| ictx = file->private_data; |
| if (!ictx) { |
| err("%s: no context for device", __func__); |
| return -ENODEV; |
| } |
| |
| mutex_lock(&ictx->lock); |
| |
| if (!ictx->display_supported) { |
| err("%s: no iMON display present", __func__); |
| retval = -ENODEV; |
| goto exit; |
| } |
| |
| if (n_bytes != 8) { |
| err("%s: invalid payload size: %d (expecting 8)", |
| __func__, (int) n_bytes); |
| retval = -EINVAL; |
| goto exit; |
| } |
| |
| if (copy_from_user(ictx->usb_tx_buf, buf, 8)) { |
| retval = -EFAULT; |
| goto exit; |
| } |
| |
| retval = send_packet(ictx); |
| if (retval) { |
| err("%s: send packet failed!", __func__); |
| goto exit; |
| } else { |
| dev_dbg(ictx->dev, "%s: write %d bytes to LCD\n", |
| __func__, (int) n_bytes); |
| } |
| exit: |
| mutex_unlock(&ictx->lock); |
| return (!retval) ? n_bytes : retval; |
| } |
| |
| /** |
| * Callback function for USB core API: transmit data |
| */ |
| static void usb_tx_callback(struct urb *urb) |
| { |
| struct imon_context *ictx; |
| |
| if (!urb) |
| return; |
| ictx = (struct imon_context *)urb->context; |
| if (!ictx) |
| return; |
| |
| ictx->tx.status = urb->status; |
| |
| /* notify waiters that write has finished */ |
| ictx->tx.busy = false; |
| smp_rmb(); /* ensure later readers know we're not busy */ |
| complete(&ictx->tx.finished); |
| } |
| |
| /** |
| * mce/rc6 keypresses have no distinct release code, use timer |
| */ |
| static void imon_mce_timeout(unsigned long data) |
| { |
| struct imon_context *ictx = (struct imon_context *)data; |
| |
| input_report_key(ictx->idev, ictx->last_keycode, 0); |
| input_sync(ictx->idev); |
| } |
| |
| /** |
| * report touchscreen input |
| */ |
| static void imon_touch_display_timeout(unsigned long data) |
| { |
| struct imon_context *ictx = (struct imon_context *)data; |
| |
| if (ictx->display_type != IMON_DISPLAY_TYPE_VGA) |
| return; |
| |
| input_report_abs(ictx->touch, ABS_X, ictx->touch_x); |
| input_report_abs(ictx->touch, ABS_Y, ictx->touch_y); |
| input_report_key(ictx->touch, BTN_TOUCH, 0x00); |
| input_sync(ictx->touch); |
| } |
| |
| /** |
| * iMON IR receivers support two different signal sets -- those used by |
| * the iMON remotes, and those used by the Windows MCE remotes (which is |
| * really just RC-6), but only one or the other at a time, as the signals |
| * are decoded onboard the receiver. |
| */ |
| int imon_ir_change_protocol(void *priv, u64 ir_type) |
| { |
| int retval; |
| struct imon_context *ictx = priv; |
| struct device *dev = ictx->dev; |
| bool pad_mouse; |
| unsigned char ir_proto_packet[] = { |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 }; |
| |
| if (ir_type && !(ir_type & ictx->props->allowed_protos)) |
| dev_warn(dev, "Looks like you're trying to use an IR protocol " |
| "this device does not support\n"); |
| |
| switch (ir_type) { |
| case IR_TYPE_RC6: |
| dev_dbg(dev, "Configuring IR receiver for MCE protocol\n"); |
| ir_proto_packet[0] = 0x01; |
| pad_mouse = false; |
| init_timer(&ictx->itimer); |
| ictx->itimer.data = (unsigned long)ictx; |
| ictx->itimer.function = imon_mce_timeout; |
| break; |
| case IR_TYPE_UNKNOWN: |
| case IR_TYPE_OTHER: |
| dev_dbg(dev, "Configuring IR receiver for iMON protocol\n"); |
| if (pad_stabilize) |
| pad_mouse = true; |
| else { |
| dev_dbg(dev, "PAD stabilize functionality disabled\n"); |
| pad_mouse = false; |
| } |
| /* ir_proto_packet[0] = 0x00; // already the default */ |
| ir_type = IR_TYPE_OTHER; |
| break; |
| default: |
| dev_warn(dev, "Unsupported IR protocol specified, overriding " |
| "to iMON IR protocol\n"); |
| if (pad_stabilize) |
| pad_mouse = true; |
| else { |
| dev_dbg(dev, "PAD stabilize functionality disabled\n"); |
| pad_mouse = false; |
| } |
| /* ir_proto_packet[0] = 0x00; // already the default */ |
| ir_type = IR_TYPE_OTHER; |
| break; |
| } |
| |
| memcpy(ictx->usb_tx_buf, &ir_proto_packet, sizeof(ir_proto_packet)); |
| |
| retval = send_packet(ictx); |
| if (retval) |
| goto out; |
| |
| ictx->ir_type = ir_type; |
| ictx->pad_mouse = pad_mouse; |
| |
| out: |
| return retval; |
| } |
| |
| static inline int tv2int(const struct timeval *a, const struct timeval *b) |
| { |
| int usecs = 0; |
| int sec = 0; |
| |
| if (b->tv_usec > a->tv_usec) { |
| usecs = 1000000; |
| sec--; |
| } |
| |
| usecs += a->tv_usec - b->tv_usec; |
| |
| sec += a->tv_sec - b->tv_sec; |
| sec *= 1000; |
| usecs /= 1000; |
| sec += usecs; |
| |
| if (sec < 0) |
| sec = 1000; |
| |
| return sec; |
| } |
| |
| /** |
| * The directional pad behaves a bit differently, depending on whether this is |
| * one of the older ffdc devices or a newer device. Newer devices appear to |
| * have a higher resolution matrix for more precise mouse movement, but it |
| * makes things overly sensitive in keyboard mode, so we do some interesting |
| * contortions to make it less touchy. Older devices run through the same |
| * routine with shorter timeout and a smaller threshold. |
| */ |
| static int stabilize(int a, int b, u16 timeout, u16 threshold) |
| { |
| struct timeval ct; |
| static struct timeval prev_time = {0, 0}; |
| static struct timeval hit_time = {0, 0}; |
| static int x, y, prev_result, hits; |
| int result = 0; |
| int msec, msec_hit; |
| |
| do_gettimeofday(&ct); |
| msec = tv2int(&ct, &prev_time); |
| msec_hit = tv2int(&ct, &hit_time); |
| |
| if (msec > 100) { |
| x = 0; |
| y = 0; |
| hits = 0; |
| } |
| |
| x += a; |
| y += b; |
| |
| prev_time = ct; |
| |
| if (abs(x) > threshold || abs(y) > threshold) { |
| if (abs(y) > abs(x)) |
| result = (y > 0) ? 0x7F : 0x80; |
| else |
| result = (x > 0) ? 0x7F00 : 0x8000; |
| |
| x = 0; |
| y = 0; |
| |
| if (result == prev_result) { |
| hits++; |
| |
| if (hits > 3) { |
| switch (result) { |
| case 0x7F: |
| y = 17 * threshold / 30; |
| break; |
| case 0x80: |
| y -= 17 * threshold / 30; |
| break; |
| case 0x7F00: |
| x = 17 * threshold / 30; |
| break; |
| case 0x8000: |
| x -= 17 * threshold / 30; |
| break; |
| } |
| } |
| |
| if (hits == 2 && msec_hit < timeout) { |
| result = 0; |
| hits = 1; |
| } |
| } else { |
| prev_result = result; |
| hits = 1; |
| hit_time = ct; |
| } |
| } |
| |
| return result; |
| } |
| |
| static u32 imon_remote_key_lookup(struct imon_context *ictx, u32 hw_code) |
| { |
| u32 scancode = be32_to_cpu(hw_code); |
| u32 keycode; |
| u32 release; |
| bool is_release_code = false; |
| |
| /* Look for the initial press of a button */ |
| keycode = ir_g_keycode_from_table(ictx->idev, scancode); |
| |
| /* Look for the release of a button */ |
| if (keycode == KEY_RESERVED) { |
| release = scancode & ~0x4000; |
| keycode = ir_g_keycode_from_table(ictx->idev, release); |
| if (keycode != KEY_RESERVED) |
| is_release_code = true; |
| } |
| |
| ictx->release_code = is_release_code; |
| |
| return keycode; |
| } |
| |
| static u32 imon_mce_key_lookup(struct imon_context *ictx, u32 hw_code) |
| { |
| u32 scancode = be32_to_cpu(hw_code); |
| u32 keycode; |
| |
| #define MCE_KEY_MASK 0x7000 |
| #define MCE_TOGGLE_BIT 0x8000 |
| |
| /* |
| * On some receivers, mce keys decode to 0x8000f04xx and 0x8000f84xx |
| * (the toggle bit flipping between alternating key presses), while |
| * on other receivers, we see 0x8000f74xx and 0x8000ff4xx. To keep |
| * the table trim, we always or in the bits to look up 0x8000ff4xx, |
| * but we can't or them into all codes, as some keys are decoded in |
| * a different way w/o the same use of the toggle bit... |
| */ |
| if ((scancode >> 24) & 0x80) |
| scancode = scancode | MCE_KEY_MASK | MCE_TOGGLE_BIT; |
| |
| keycode = ir_g_keycode_from_table(ictx->idev, scancode); |
| |
| return keycode; |
| } |
| |
| static u32 imon_panel_key_lookup(u64 hw_code) |
| { |
| int i; |
| u64 code = be64_to_cpu(hw_code); |
| u32 keycode = KEY_RESERVED; |
| |
| for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) { |
| if (imon_panel_key_table[i].hw_code == (code | 0xffee)) { |
| keycode = imon_panel_key_table[i].keycode; |
| break; |
| } |
| } |
| |
| return keycode; |
| } |
| |
| static bool imon_mouse_event(struct imon_context *ictx, |
| unsigned char *buf, int len) |
| { |
| char rel_x = 0x00, rel_y = 0x00; |
| u8 right_shift = 1; |
| bool mouse_input = true; |
| int dir = 0; |
| |
| /* newer iMON device PAD or mouse button */ |
| if (ictx->product != 0xffdc && (buf[0] & 0x01) && len == 5) { |
| rel_x = buf[2]; |
| rel_y = buf[3]; |
| right_shift = 1; |
| /* 0xffdc iMON PAD or mouse button input */ |
| } else if (ictx->product == 0xffdc && (buf[0] & 0x40) && |
| !((buf[1] & 0x01) || ((buf[1] >> 2) & 0x01))) { |
| rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 | |
| (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6; |
| if (buf[0] & 0x02) |
| rel_x |= ~0x0f; |
| rel_x = rel_x + rel_x / 2; |
| rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 | |
| (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6; |
| if (buf[0] & 0x01) |
| rel_y |= ~0x0f; |
| rel_y = rel_y + rel_y / 2; |
| right_shift = 2; |
| /* some ffdc devices decode mouse buttons differently... */ |
| } else if (ictx->product == 0xffdc && (buf[0] == 0x68)) { |
| right_shift = 2; |
| /* ch+/- buttons, which we use for an emulated scroll wheel */ |
| } else if (ictx->kc == KEY_CHANNELUP && (buf[2] & 0x40) != 0x40) { |
| dir = 1; |
| } else if (ictx->kc == KEY_CHANNELDOWN && (buf[2] & 0x40) != 0x40) { |
| dir = -1; |
| } else |
| mouse_input = false; |
| |
| if (mouse_input) { |
| dev_dbg(ictx->dev, "sending mouse data via input subsystem\n"); |
| |
| if (dir) { |
| input_report_rel(ictx->idev, REL_WHEEL, dir); |
| } else if (rel_x || rel_y) { |
| input_report_rel(ictx->idev, REL_X, rel_x); |
| input_report_rel(ictx->idev, REL_Y, rel_y); |
| } else { |
| input_report_key(ictx->idev, BTN_LEFT, buf[1] & 0x1); |
| input_report_key(ictx->idev, BTN_RIGHT, |
| buf[1] >> right_shift & 0x1); |
| } |
| input_sync(ictx->idev); |
| ictx->last_keycode = ictx->kc; |
| } |
| |
| return mouse_input; |
| } |
| |
| static void imon_touch_event(struct imon_context *ictx, unsigned char *buf) |
| { |
| mod_timer(&ictx->ttimer, jiffies + TOUCH_TIMEOUT); |
| ictx->touch_x = (buf[0] << 4) | (buf[1] >> 4); |
| ictx->touch_y = 0xfff - ((buf[2] << 4) | (buf[1] & 0xf)); |
| input_report_abs(ictx->touch, ABS_X, ictx->touch_x); |
| input_report_abs(ictx->touch, ABS_Y, ictx->touch_y); |
| input_report_key(ictx->touch, BTN_TOUCH, 0x01); |
| input_sync(ictx->touch); |
| } |
| |
| static void imon_pad_to_keys(struct imon_context *ictx, unsigned char *buf) |
| { |
| int dir = 0; |
| char rel_x = 0x00, rel_y = 0x00; |
| u16 timeout, threshold; |
| u64 temp_key; |
| u32 remote_key; |
| |
| /* |
| * The imon directional pad functions more like a touchpad. Bytes 3 & 4 |
| * contain a position coordinate (x,y), with each component ranging |
| * from -14 to 14. We want to down-sample this to only 4 discrete values |
| * for up/down/left/right arrow keys. Also, when you get too close to |
| * diagonals, it has a tendancy to jump back and forth, so lets try to |
| * ignore when they get too close. |
| */ |
| if (ictx->product != 0xffdc) { |
| /* first, pad to 8 bytes so it conforms with everything else */ |
| buf[5] = buf[6] = buf[7] = 0; |
| timeout = 500; /* in msecs */ |
| /* (2*threshold) x (2*threshold) square */ |
| threshold = pad_thresh ? pad_thresh : 28; |
| rel_x = buf[2]; |
| rel_y = buf[3]; |
| |
| if (ictx->ir_type == IR_TYPE_OTHER && pad_stabilize) { |
| if ((buf[1] == 0) && ((rel_x != 0) || (rel_y != 0))) { |
| dir = stabilize((int)rel_x, (int)rel_y, |
| timeout, threshold); |
| if (!dir) { |
| ictx->kc = KEY_UNKNOWN; |
| return; |
| } |
| buf[2] = dir & 0xFF; |
| buf[3] = (dir >> 8) & 0xFF; |
| memcpy(&temp_key, buf, sizeof(temp_key)); |
| remote_key = (u32) (le64_to_cpu(temp_key) |
| & 0xffffffff); |
| ictx->kc = imon_remote_key_lookup(ictx, |
| remote_key); |
| } |
| } else { |
| if (abs(rel_y) > abs(rel_x)) { |
| buf[2] = (rel_y > 0) ? 0x7F : 0x80; |
| buf[3] = 0; |
| ictx->kc = (rel_y > 0) ? KEY_DOWN : KEY_UP; |
| } else { |
| buf[2] = 0; |
| buf[3] = (rel_x > 0) ? 0x7F : 0x80; |
| ictx->kc = (rel_x > 0) ? KEY_RIGHT : KEY_LEFT; |
| } |
| } |
| |
| /* |
| * Handle on-board decoded pad events for e.g. older VFD/iMON-Pad |
| * device (15c2:ffdc). The remote generates various codes from |
| * 0x68nnnnB7 to 0x6AnnnnB7, the left mouse button generates |
| * 0x688301b7 and the right one 0x688481b7. All other keys generate |
| * 0x2nnnnnnn. Position coordinate is encoded in buf[1] and buf[2] with |
| * reversed endianess. Extract direction from buffer, rotate endianess, |
| * adjust sign and feed the values into stabilize(). The resulting codes |
| * will be 0x01008000, 0x01007F00, which match the newer devices. |
| */ |
| } else { |
| timeout = 10; /* in msecs */ |
| /* (2*threshold) x (2*threshold) square */ |
| threshold = pad_thresh ? pad_thresh : 15; |
| |
| /* buf[1] is x */ |
| rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 | |
| (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6; |
| if (buf[0] & 0x02) |
| rel_x |= ~0x10+1; |
| /* buf[2] is y */ |
| rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 | |
| (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6; |
| if (buf[0] & 0x01) |
| rel_y |= ~0x10+1; |
| |
| buf[0] = 0x01; |
| buf[1] = buf[4] = buf[5] = buf[6] = buf[7] = 0; |
| |
| if (ictx->ir_type == IR_TYPE_OTHER && pad_stabilize) { |
| dir = stabilize((int)rel_x, (int)rel_y, |
| timeout, threshold); |
| if (!dir) { |
| ictx->kc = KEY_UNKNOWN; |
| return; |
| } |
| buf[2] = dir & 0xFF; |
| buf[3] = (dir >> 8) & 0xFF; |
| memcpy(&temp_key, buf, sizeof(temp_key)); |
| remote_key = (u32) (le64_to_cpu(temp_key) & 0xffffffff); |
| ictx->kc = imon_remote_key_lookup(ictx, remote_key); |
| } else { |
| if (abs(rel_y) > abs(rel_x)) { |
| buf[2] = (rel_y > 0) ? 0x7F : 0x80; |
| buf[3] = 0; |
| ictx->kc = (rel_y > 0) ? KEY_DOWN : KEY_UP; |
| } else { |
| buf[2] = 0; |
| buf[3] = (rel_x > 0) ? 0x7F : 0x80; |
| ictx->kc = (rel_x > 0) ? KEY_RIGHT : KEY_LEFT; |
| } |
| } |
| } |
| } |
| |
| static int imon_parse_press_type(struct imon_context *ictx, |
| unsigned char *buf, u8 ktype) |
| { |
| int press_type = 0; |
| int rep_delay = ictx->idev->rep[REP_DELAY]; |
| int rep_period = ictx->idev->rep[REP_PERIOD]; |
| |
| /* key release of 0x02XXXXXX key */ |
| if (ictx->kc == KEY_RESERVED && buf[0] == 0x02 && buf[3] == 0x00) |
| ictx->kc = ictx->last_keycode; |
| |
| /* mouse button release on (some) 0xffdc devices */ |
| else if (ictx->kc == KEY_RESERVED && buf[0] == 0x68 && buf[1] == 0x82 && |
| buf[2] == 0x81 && buf[3] == 0xb7) |
| ictx->kc = ictx->last_keycode; |
| |
| /* mouse button release on (some other) 0xffdc devices */ |
| else if (ictx->kc == KEY_RESERVED && buf[0] == 0x01 && buf[1] == 0x00 && |
| buf[2] == 0x81 && buf[3] == 0xb7) |
| ictx->kc = ictx->last_keycode; |
| |
| /* mce-specific button handling */ |
| else if (ktype == IMON_KEY_MCE) { |
| /* initial press */ |
| if (ictx->kc != ictx->last_keycode |
| || buf[2] != ictx->mce_toggle_bit) { |
| ictx->last_keycode = ictx->kc; |
| ictx->mce_toggle_bit = buf[2]; |
| press_type = 1; |
| mod_timer(&ictx->itimer, |
| jiffies + msecs_to_jiffies(rep_delay)); |
| /* repeat */ |
| } else { |
| press_type = 2; |
| mod_timer(&ictx->itimer, |
| jiffies + msecs_to_jiffies(rep_period)); |
| } |
| |
| /* incoherent or irrelevant data */ |
| } else if (ictx->kc == KEY_RESERVED) |
| press_type = -EINVAL; |
| |
| /* key release of 0xXXXXXXb7 key */ |
| else if (ictx->release_code) |
| press_type = 0; |
| |
| /* this is a button press */ |
| else |
| press_type = 1; |
| |
| return press_type; |
| } |
| |
| /** |
| * Process the incoming packet |
| */ |
| static void imon_incoming_packet(struct imon_context *ictx, |
| struct urb *urb, int intf) |
| { |
| int len = urb->actual_length; |
| unsigned char *buf = urb->transfer_buffer; |
| struct device *dev = ictx->dev; |
| u32 kc; |
| bool norelease = false; |
| int i; |
| u64 temp_key; |
| u64 panel_key = 0; |
| u32 remote_key = 0; |
| struct input_dev *idev = NULL; |
| int press_type = 0; |
| int msec; |
| struct timeval t; |
| static struct timeval prev_time = { 0, 0 }; |
| u8 ktype = IMON_KEY_IMON; |
| |
| idev = ictx->idev; |
| |
| /* filter out junk data on the older 0xffdc imon devices */ |
| if ((buf[0] == 0xff) && (buf[1] == 0xff) && (buf[2] == 0xff)) |
| return; |
| |
| /* Figure out what key was pressed */ |
| memcpy(&temp_key, buf, sizeof(temp_key)); |
| if (len == 8 && buf[7] == 0xee) { |
| ktype = IMON_KEY_PANEL; |
| panel_key = le64_to_cpu(temp_key); |
| kc = imon_panel_key_lookup(panel_key); |
| } else { |
| remote_key = (u32) (le64_to_cpu(temp_key) & 0xffffffff); |
| if (ictx->ir_type == IR_TYPE_RC6) { |
| if (buf[0] == 0x80) |
| ktype = IMON_KEY_MCE; |
| kc = imon_mce_key_lookup(ictx, remote_key); |
| } else |
| kc = imon_remote_key_lookup(ictx, remote_key); |
| } |
| |
| /* keyboard/mouse mode toggle button */ |
| if (kc == KEY_KEYBOARD && !ictx->release_code) { |
| ictx->last_keycode = kc; |
| if (!nomouse) { |
| ictx->pad_mouse = ~(ictx->pad_mouse) & 0x1; |
| dev_dbg(dev, "toggling to %s mode\n", |
| ictx->pad_mouse ? "mouse" : "keyboard"); |
| return; |
| } else { |
| ictx->pad_mouse = 0; |
| dev_dbg(dev, "mouse mode disabled, passing key value\n"); |
| } |
| } |
| |
| ictx->kc = kc; |
| |
| /* send touchscreen events through input subsystem if touchpad data */ |
| if (ictx->display_type == IMON_DISPLAY_TYPE_VGA && len == 8 && |
| buf[7] == 0x86) { |
| imon_touch_event(ictx, buf); |
| |
| /* look for mouse events with pad in mouse mode */ |
| } else if (ictx->pad_mouse) { |
| if (imon_mouse_event(ictx, buf, len)) |
| return; |
| } |
| |
| /* Now for some special handling to convert pad input to arrow keys */ |
| if (((len == 5) && (buf[0] == 0x01) && (buf[4] == 0x00)) || |
| ((len == 8) && (buf[0] & 0x40) && |
| !(buf[1] & 0x1 || buf[1] >> 2 & 0x1))) { |
| len = 8; |
| imon_pad_to_keys(ictx, buf); |
| norelease = true; |
| } |
| |
| if (debug) { |
| printk(KERN_INFO "intf%d decoded packet: ", intf); |
| for (i = 0; i < len; ++i) |
| printk("%02x ", buf[i]); |
| printk("\n"); |
| } |
| |
| press_type = imon_parse_press_type(ictx, buf, ktype); |
| if (press_type < 0) |
| goto not_input_data; |
| |
| if (ictx->kc == KEY_UNKNOWN) |
| goto unknown_key; |
| |
| /* KEY_MUTE repeats from MCE and knob need to be suppressed */ |
| if ((ictx->kc == KEY_MUTE && ictx->kc == ictx->last_keycode) |
| && (buf[7] == 0xee || ktype == IMON_KEY_MCE)) { |
| do_gettimeofday(&t); |
| msec = tv2int(&t, &prev_time); |
| prev_time = t; |
| if (msec < idev->rep[REP_DELAY]) |
| return; |
| } |
| |
| input_report_key(idev, ictx->kc, press_type); |
| input_sync(idev); |
| |
| /* panel keys and some remote keys don't generate a release */ |
| if (panel_key || norelease) { |
| input_report_key(idev, ictx->kc, 0); |
| input_sync(idev); |
| } |
| |
| ictx->last_keycode = ictx->kc; |
| |
| return; |
| |
| unknown_key: |
| dev_info(dev, "%s: unknown keypress, code 0x%llx\n", __func__, |
| (panel_key ? be64_to_cpu(panel_key) : |
| be32_to_cpu(remote_key))); |
| return; |
| |
| not_input_data: |
| if (len != 8) { |
| dev_warn(dev, "imon %s: invalid incoming packet " |
| "size (len = %d, intf%d)\n", __func__, len, intf); |
| return; |
| } |
| |
| /* iMON 2.4G associate frame */ |
| if (buf[0] == 0x00 && |
| buf[2] == 0xFF && /* REFID */ |
| buf[3] == 0xFF && |
| buf[4] == 0xFF && |
| buf[5] == 0xFF && /* iMON 2.4G */ |
| ((buf[6] == 0x4E && buf[7] == 0xDF) || /* LT */ |
| (buf[6] == 0x5E && buf[7] == 0xDF))) { /* DT */ |
| dev_warn(dev, "%s: remote associated refid=%02X\n", |
| __func__, buf[1]); |
| ictx->rf_isassociating = false; |
| } |
| } |
| |
| /** |
| * Callback function for USB core API: receive data |
| */ |
| static void usb_rx_callback_intf0(struct urb *urb) |
| { |
| struct imon_context *ictx; |
| int intfnum = 0; |
| |
| if (!urb) |
| return; |
| |
| ictx = (struct imon_context *)urb->context; |
| if (!ictx) |
| return; |
| |
| switch (urb->status) { |
| case -ENOENT: /* usbcore unlink successful! */ |
| return; |
| |
| case -ESHUTDOWN: /* transport endpoint was shut down */ |
| break; |
| |
| case 0: |
| imon_incoming_packet(ictx, urb, intfnum); |
| break; |
| |
| default: |
| dev_warn(ictx->dev, "imon %s: status(%d): ignored\n", |
| __func__, urb->status); |
| break; |
| } |
| |
| usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC); |
| } |
| |
| static void usb_rx_callback_intf1(struct urb *urb) |
| { |
| struct imon_context *ictx; |
| int intfnum = 1; |
| |
| if (!urb) |
| return; |
| |
| ictx = (struct imon_context *)urb->context; |
| if (!ictx) |
| return; |
| |
| switch (urb->status) { |
| case -ENOENT: /* usbcore unlink successful! */ |
| return; |
| |
| case -ESHUTDOWN: /* transport endpoint was shut down */ |
| break; |
| |
| case 0: |
| imon_incoming_packet(ictx, urb, intfnum); |
| break; |
| |
| default: |
| dev_warn(ictx->dev, "imon %s: status(%d): ignored\n", |
| __func__, urb->status); |
| break; |
| } |
| |
| usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC); |
| } |
| |
| static struct input_dev *imon_init_idev(struct imon_context *ictx) |
| { |
| struct input_dev *idev; |
| struct ir_dev_props *props; |
| struct ir_input_dev *ir; |
| int ret, i; |
| |
| idev = input_allocate_device(); |
| if (!idev) { |
| dev_err(ictx->dev, "remote input dev allocation failed\n"); |
| goto idev_alloc_failed; |
| } |
| |
| props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL); |
| if (!props) { |
| dev_err(ictx->dev, "remote ir dev props allocation failed\n"); |
| goto props_alloc_failed; |
| } |
| |
| ir = kzalloc(sizeof(struct ir_input_dev), GFP_KERNEL); |
| if (!ir) { |
| dev_err(ictx->dev, "remote ir input dev allocation failed\n"); |
| goto ir_dev_alloc_failed; |
| } |
| |
| snprintf(ictx->name_idev, sizeof(ictx->name_idev), |
| "iMON Remote (%04x:%04x)", ictx->vendor, ictx->product); |
| idev->name = ictx->name_idev; |
| |
| usb_make_path(ictx->usbdev_intf0, ictx->phys_idev, |
| sizeof(ictx->phys_idev)); |
| strlcat(ictx->phys_idev, "/input0", sizeof(ictx->phys_idev)); |
| idev->phys = ictx->phys_idev; |
| |
| idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL); |
| |
| idev->keybit[BIT_WORD(BTN_MOUSE)] = |
| BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); |
| idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) | |
| BIT_MASK(REL_WHEEL); |
| |
| /* panel and/or knob code support */ |
| for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) { |
| u32 kc = imon_panel_key_table[i].keycode; |
| __set_bit(kc, idev->keybit); |
| } |
| |
| props->priv = ictx; |
| props->driver_type = RC_DRIVER_SCANCODE; |
| /* IR_TYPE_OTHER maps to iMON PAD remote, IR_TYPE_RC6 to MCE remote */ |
| props->allowed_protos = IR_TYPE_OTHER | IR_TYPE_RC6; |
| props->change_protocol = imon_ir_change_protocol; |
| ictx->props = props; |
| |
| ictx->ir = ir; |
| memcpy(&ir->dev, ictx->dev, sizeof(struct device)); |
| |
| usb_to_input_id(ictx->usbdev_intf0, &idev->id); |
| idev->dev.parent = ictx->dev; |
| |
| input_set_drvdata(idev, ir); |
| |
| ret = ir_input_register(idev, RC_MAP_IMON_PAD, props, MOD_NAME); |
| if (ret < 0) { |
| dev_err(ictx->dev, "remote input dev register failed\n"); |
| goto idev_register_failed; |
| } |
| |
| return idev; |
| |
| idev_register_failed: |
| kfree(ir); |
| ir_dev_alloc_failed: |
| kfree(props); |
| props_alloc_failed: |
| input_free_device(idev); |
| idev_alloc_failed: |
| |
| return NULL; |
| } |
| |
| static struct input_dev *imon_init_touch(struct imon_context *ictx) |
| { |
| struct input_dev *touch; |
| int ret; |
| |
| touch = input_allocate_device(); |
| if (!touch) { |
| dev_err(ictx->dev, "touchscreen input dev allocation failed\n"); |
| goto touch_alloc_failed; |
| } |
| |
| snprintf(ictx->name_touch, sizeof(ictx->name_touch), |
| "iMON USB Touchscreen (%04x:%04x)", |
| ictx->vendor, ictx->product); |
| touch->name = ictx->name_touch; |
| |
| usb_make_path(ictx->usbdev_intf1, ictx->phys_touch, |
| sizeof(ictx->phys_touch)); |
| strlcat(ictx->phys_touch, "/input1", sizeof(ictx->phys_touch)); |
| touch->phys = ictx->phys_touch; |
| |
| touch->evbit[0] = |
| BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
| touch->keybit[BIT_WORD(BTN_TOUCH)] = |
| BIT_MASK(BTN_TOUCH); |
| input_set_abs_params(touch, ABS_X, |
| 0x00, 0xfff, 0, 0); |
| input_set_abs_params(touch, ABS_Y, |
| 0x00, 0xfff, 0, 0); |
| |
| input_set_drvdata(touch, ictx); |
| |
| usb_to_input_id(ictx->usbdev_intf1, &touch->id); |
| touch->dev.parent = ictx->dev; |
| ret = input_register_device(touch); |
| if (ret < 0) { |
| dev_info(ictx->dev, "touchscreen input dev register failed\n"); |
| goto touch_register_failed; |
| } |
| |
| return touch; |
| |
| touch_register_failed: |
| input_free_device(ictx->touch); |
| |
| touch_alloc_failed: |
| return NULL; |
| } |
| |
| static bool imon_find_endpoints(struct imon_context *ictx, |
| struct usb_host_interface *iface_desc) |
| { |
| struct usb_endpoint_descriptor *ep; |
| struct usb_endpoint_descriptor *rx_endpoint = NULL; |
| struct usb_endpoint_descriptor *tx_endpoint = NULL; |
| int ifnum = iface_desc->desc.bInterfaceNumber; |
| int num_endpts = iface_desc->desc.bNumEndpoints; |
| int i, ep_dir, ep_type; |
| bool ir_ep_found = false; |
| bool display_ep_found = false; |
| bool tx_control = false; |
| |
| /* |
| * Scan the endpoint list and set: |
| * first input endpoint = IR endpoint |
| * first output endpoint = display endpoint |
| */ |
| for (i = 0; i < num_endpts && !(ir_ep_found && display_ep_found); ++i) { |
| ep = &iface_desc->endpoint[i].desc; |
| ep_dir = ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK; |
| ep_type = ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; |
| |
| if (!ir_ep_found && ep_dir == USB_DIR_IN && |
| ep_type == USB_ENDPOINT_XFER_INT) { |
| |
| rx_endpoint = ep; |
| ir_ep_found = true; |
| dev_dbg(ictx->dev, "%s: found IR endpoint\n", __func__); |
| |
| } else if (!display_ep_found && ep_dir == USB_DIR_OUT && |
| ep_type == USB_ENDPOINT_XFER_INT) { |
| tx_endpoint = ep; |
| display_ep_found = true; |
| dev_dbg(ictx->dev, "%s: found display endpoint\n", __func__); |
| } |
| } |
| |
| if (ifnum == 0) { |
| ictx->rx_endpoint_intf0 = rx_endpoint; |
| /* |
| * tx is used to send characters to lcd/vfd, associate RF |
| * remotes, set IR protocol, and maybe more... |
| */ |
| ictx->tx_endpoint = tx_endpoint; |
| } else { |
| ictx->rx_endpoint_intf1 = rx_endpoint; |
| } |
| |
| /* |
| * If we didn't find a display endpoint, this is probably one of the |
| * newer iMON devices that use control urb instead of interrupt |
| */ |
| if (!display_ep_found) { |
| tx_control = true; |
| display_ep_found = true; |
| dev_dbg(ictx->dev, "%s: device uses control endpoint, not " |
| "interface OUT endpoint\n", __func__); |
| } |
| |
| /* |
| * Some iMON receivers have no display. Unfortunately, it seems |
| * that SoundGraph recycles device IDs between devices both with |
| * and without... :\ |
| */ |
| if (ictx->display_type == IMON_DISPLAY_TYPE_NONE) { |
| display_ep_found = false; |
| dev_dbg(ictx->dev, "%s: device has no display\n", __func__); |
| } |
| |
| /* |
| * iMON Touch devices have a VGA touchscreen, but no "display", as |
| * that refers to e.g. /dev/lcd0 (a character device LCD or VFD). |
| */ |
| if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { |
| display_ep_found = false; |
| dev_dbg(ictx->dev, "%s: iMON Touch device found\n", __func__); |
| } |
| |
| /* Input endpoint is mandatory */ |
| if (!ir_ep_found) |
| err("%s: no valid input (IR) endpoint found.", __func__); |
| |
| ictx->tx_control = tx_control; |
| |
| if (display_ep_found) |
| ictx->display_supported = true; |
| |
| return ir_ep_found; |
| |
| } |
| |
| static struct imon_context *imon_init_intf0(struct usb_interface *intf) |
| { |
| struct imon_context *ictx; |
| struct urb *rx_urb; |
| struct urb *tx_urb; |
| struct device *dev = &intf->dev; |
| struct usb_host_interface *iface_desc; |
| int ret = -ENOMEM; |
| |
| ictx = kzalloc(sizeof(struct imon_context), GFP_KERNEL); |
| if (!ictx) { |
| dev_err(dev, "%s: kzalloc failed for context", __func__); |
| goto exit; |
| } |
| rx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!rx_urb) { |
| dev_err(dev, "%s: usb_alloc_urb failed for IR urb", __func__); |
| goto rx_urb_alloc_failed; |
| } |
| tx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!tx_urb) { |
| dev_err(dev, "%s: usb_alloc_urb failed for display urb", |
| __func__); |
| goto tx_urb_alloc_failed; |
| } |
| |
| mutex_init(&ictx->lock); |
| |
| mutex_lock(&ictx->lock); |
| |
| ictx->dev = dev; |
| ictx->usbdev_intf0 = usb_get_dev(interface_to_usbdev(intf)); |
| ictx->dev_present_intf0 = true; |
| ictx->rx_urb_intf0 = rx_urb; |
| ictx->tx_urb = tx_urb; |
| ictx->rf_device = false; |
| |
| ictx->vendor = le16_to_cpu(ictx->usbdev_intf0->descriptor.idVendor); |
| ictx->product = le16_to_cpu(ictx->usbdev_intf0->descriptor.idProduct); |
| |
| ret = -ENODEV; |
| iface_desc = intf->cur_altsetting; |
| if (!imon_find_endpoints(ictx, iface_desc)) { |
| goto find_endpoint_failed; |
| } |
| |
| ictx->idev = imon_init_idev(ictx); |
| if (!ictx->idev) { |
| dev_err(dev, "%s: input device setup failed\n", __func__); |
| goto idev_setup_failed; |
| } |
| |
| usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0, |
| usb_rcvintpipe(ictx->usbdev_intf0, |
| ictx->rx_endpoint_intf0->bEndpointAddress), |
| ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), |
| usb_rx_callback_intf0, ictx, |
| ictx->rx_endpoint_intf0->bInterval); |
| |
| ret = usb_submit_urb(ictx->rx_urb_intf0, GFP_KERNEL); |
| if (ret) { |
| err("%s: usb_submit_urb failed for intf0 (%d)", |
| __func__, ret); |
| goto urb_submit_failed; |
| } |
| |
| return ictx; |
| |
| urb_submit_failed: |
| ir_input_unregister(ictx->idev); |
| input_free_device(ictx->idev); |
| idev_setup_failed: |
| find_endpoint_failed: |
| mutex_unlock(&ictx->lock); |
| usb_free_urb(tx_urb); |
| tx_urb_alloc_failed: |
| usb_free_urb(rx_urb); |
| rx_urb_alloc_failed: |
| kfree(ictx); |
| exit: |
| dev_err(dev, "unable to initialize intf0, err %d\n", ret); |
| |
| return NULL; |
| } |
| |
| static struct imon_context *imon_init_intf1(struct usb_interface *intf, |
| struct imon_context *ictx) |
| { |
| struct urb *rx_urb; |
| struct usb_host_interface *iface_desc; |
| int ret = -ENOMEM; |
| |
| rx_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!rx_urb) { |
| err("%s: usb_alloc_urb failed for IR urb", __func__); |
| goto rx_urb_alloc_failed; |
| } |
| |
| mutex_lock(&ictx->lock); |
| |
| if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { |
| init_timer(&ictx->ttimer); |
| ictx->ttimer.data = (unsigned long)ictx; |
| ictx->ttimer.function = imon_touch_display_timeout; |
| } |
| |
| ictx->usbdev_intf1 = usb_get_dev(interface_to_usbdev(intf)); |
| ictx->dev_present_intf1 = true; |
| ictx->rx_urb_intf1 = rx_urb; |
| |
| ret = -ENODEV; |
| iface_desc = intf->cur_altsetting; |
| if (!imon_find_endpoints(ictx, iface_desc)) |
| goto find_endpoint_failed; |
| |
| if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { |
| ictx->touch = imon_init_touch(ictx); |
| if (!ictx->touch) |
| goto touch_setup_failed; |
| } else |
| ictx->touch = NULL; |
| |
| usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1, |
| usb_rcvintpipe(ictx->usbdev_intf1, |
| ictx->rx_endpoint_intf1->bEndpointAddress), |
| ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), |
| usb_rx_callback_intf1, ictx, |
| ictx->rx_endpoint_intf1->bInterval); |
| |
| ret = usb_submit_urb(ictx->rx_urb_intf1, GFP_KERNEL); |
| |
| if (ret) { |
| err("%s: usb_submit_urb failed for intf1 (%d)", |
| __func__, ret); |
| goto urb_submit_failed; |
| } |
| |
| return ictx; |
| |
| urb_submit_failed: |
| if (ictx->touch) { |
| input_unregister_device(ictx->touch); |
| input_free_device(ictx->touch); |
| } |
| touch_setup_failed: |
| find_endpoint_failed: |
| mutex_unlock(&ictx->lock); |
| usb_free_urb(rx_urb); |
| rx_urb_alloc_failed: |
| dev_err(ictx->dev, "unable to initialize intf0, err %d\n", ret); |
| |
| return NULL; |
| } |
| |
| /* |
| * The 0x15c2:0xffdc device ID was used for umpteen different imon |
| * devices, and all of them constantly spew interrupts, even when there |
| * is no actual data to report. However, byte 6 of this buffer looks like |
| * its unique across device variants, so we're trying to key off that to |
| * figure out which display type (if any) and what IR protocol the device |
| * actually supports. These devices have their IR protocol hard-coded into |
| * their firmware, they can't be changed on the fly like the newer hardware. |
| */ |
| static void imon_get_ffdc_type(struct imon_context *ictx) |
| { |
| u8 ffdc_cfg_byte = ictx->usb_rx_buf[6]; |
| u8 detected_display_type = IMON_DISPLAY_TYPE_NONE; |
| u64 allowed_protos = IR_TYPE_OTHER; |
| |
| switch (ffdc_cfg_byte) { |
| /* iMON Knob, no display, iMON IR + vol knob */ |
| case 0x21: |
| dev_info(ictx->dev, "0xffdc iMON Knob, iMON IR"); |
| ictx->display_supported = false; |
| break; |
| /* iMON 2.4G LT (usb stick), no display, iMON RF */ |
| case 0x4e: |
| dev_info(ictx->dev, "0xffdc iMON 2.4G LT, iMON RF"); |
| ictx->display_supported = false; |
| ictx->rf_device = true; |
| break; |
| /* iMON VFD, no IR (does have vol knob tho) */ |
| case 0x35: |
| dev_info(ictx->dev, "0xffdc iMON VFD + knob, no IR"); |
| detected_display_type = IMON_DISPLAY_TYPE_VFD; |
| break; |
| /* iMON VFD, iMON IR */ |
| case 0x24: |
| case 0x85: |
| dev_info(ictx->dev, "0xffdc iMON VFD, iMON IR"); |
| detected_display_type = IMON_DISPLAY_TYPE_VFD; |
| break; |
| /* iMON LCD, MCE IR */ |
| case 0x9e: |
| case 0x9f: |
| dev_info(ictx->dev, "0xffdc iMON LCD, MCE IR"); |
| detected_display_type = IMON_DISPLAY_TYPE_LCD; |
| allowed_protos = IR_TYPE_RC6; |
| break; |
| default: |
| dev_info(ictx->dev, "Unknown 0xffdc device, " |
| "defaulting to VFD and iMON IR"); |
| detected_display_type = IMON_DISPLAY_TYPE_VFD; |
| break; |
| } |
| |
| printk(KERN_CONT " (id 0x%02x)\n", ffdc_cfg_byte); |
| |
| ictx->display_type = detected_display_type; |
| ictx->props->allowed_protos = allowed_protos; |
| ictx->ir_type = allowed_protos; |
| } |
| |
| static void imon_set_display_type(struct imon_context *ictx, |
| struct usb_interface *intf) |
| { |
| u8 configured_display_type = IMON_DISPLAY_TYPE_VFD; |
| |
| /* |
| * Try to auto-detect the type of display if the user hasn't set |
| * it by hand via the display_type modparam. Default is VFD. |
| */ |
| |
| if (display_type == IMON_DISPLAY_TYPE_AUTO) { |
| switch (ictx->product) { |
| case 0xffdc: |
| /* set in imon_get_ffdc_type() */ |
| configured_display_type = ictx->display_type; |
| break; |
| case 0x0034: |
| case 0x0035: |
| configured_display_type = IMON_DISPLAY_TYPE_VGA; |
| break; |
| case 0x0038: |
| case 0x0039: |
| case 0x0045: |
| configured_display_type = IMON_DISPLAY_TYPE_LCD; |
| break; |
| case 0x003c: |
| case 0x0041: |
| case 0x0042: |
| case 0x0043: |
| configured_display_type = IMON_DISPLAY_TYPE_NONE; |
| ictx->display_supported = false; |
| break; |
| case 0x0036: |
| case 0x0044: |
| default: |
| configured_display_type = IMON_DISPLAY_TYPE_VFD; |
| break; |
| } |
| } else { |
| configured_display_type = display_type; |
| if (display_type == IMON_DISPLAY_TYPE_NONE) |
| ictx->display_supported = false; |
| else |
| ictx->display_supported = true; |
| dev_info(ictx->dev, "%s: overriding display type to %d via " |
| "modparam\n", __func__, display_type); |
| } |
| |
| ictx->display_type = configured_display_type; |
| } |
| |
| static void imon_init_display(struct imon_context *ictx, |
| struct usb_interface *intf) |
| { |
| int ret; |
| |
| dev_dbg(ictx->dev, "Registering iMON display with sysfs\n"); |
| |
| /* set up sysfs entry for built-in clock */ |
| ret = sysfs_create_group(&intf->dev.kobj, |
| &imon_display_attribute_group); |
| if (ret) |
| dev_err(ictx->dev, "Could not create display sysfs " |
| "entries(%d)", ret); |
| |
| if (ictx->display_type == IMON_DISPLAY_TYPE_LCD) |
| ret = usb_register_dev(intf, &imon_lcd_class); |
| else |
| ret = usb_register_dev(intf, &imon_vfd_class); |
| if (ret) |
| /* Not a fatal error, so ignore */ |
| dev_info(ictx->dev, "could not get a minor number for " |
| "display\n"); |
| |
| } |
| |
| /** |
| * Callback function for USB core API: Probe |
| */ |
| static int __devinit imon_probe(struct usb_interface *interface, |
| const struct usb_device_id *id) |
| { |
| struct usb_device *usbdev = NULL; |
| struct usb_host_interface *iface_desc = NULL; |
| struct usb_interface *first_if; |
| struct device *dev = &interface->dev; |
| int ifnum, code_length, sysfs_err; |
| int ret = 0; |
| struct imon_context *ictx = NULL; |
| struct imon_context *first_if_ctx = NULL; |
| u16 vendor, product; |
| const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x88 }; |
| |
| code_length = BUF_CHUNK_SIZE * 8; |
| |
| usbdev = usb_get_dev(interface_to_usbdev(interface)); |
| iface_desc = interface->cur_altsetting; |
| ifnum = iface_desc->desc.bInterfaceNumber; |
| vendor = le16_to_cpu(usbdev->descriptor.idVendor); |
| product = le16_to_cpu(usbdev->descriptor.idProduct); |
| |
| dev_dbg(dev, "%s: found iMON device (%04x:%04x, intf%d)\n", |
| __func__, vendor, product, ifnum); |
| |
| /* prevent races probing devices w/multiple interfaces */ |
| mutex_lock(&driver_lock); |
| |
| first_if = usb_ifnum_to_if(usbdev, 0); |
| first_if_ctx = (struct imon_context *)usb_get_intfdata(first_if); |
| |
| if (ifnum == 0) { |
| ictx = imon_init_intf0(interface); |
| if (!ictx) { |
| err("%s: failed to initialize context!\n", __func__); |
| ret = -ENODEV; |
| goto fail; |
| } |
| |
| } else { |
| /* this is the secondary interface on the device */ |
| ictx = imon_init_intf1(interface, first_if_ctx); |
| if (!ictx) { |
| err("%s: failed to attach to context!\n", __func__); |
| ret = -ENODEV; |
| goto fail; |
| } |
| |
| } |
| |
| usb_set_intfdata(interface, ictx); |
| |
| if (ifnum == 0) { |
| /* Enable front-panel buttons and/or knobs */ |
| memcpy(ictx->usb_tx_buf, &fp_packet, sizeof(fp_packet)); |
| ret = send_packet(ictx); |
| /* Not fatal, but warn about it */ |
| if (ret) |
| dev_info(dev, "failed to enable panel buttons " |
| "and/or knobs\n"); |
| |
| if (product == 0xffdc) |
| imon_get_ffdc_type(ictx); |
| |
| imon_set_display_type(ictx, interface); |
| |
| if (product == 0xffdc && ictx->rf_device) { |
| sysfs_err = sysfs_create_group(&interface->dev.kobj, |
| &imon_rf_attribute_group); |
| if (sysfs_err) |
| err("%s: Could not create RF sysfs entries(%d)", |
| __func__, sysfs_err); |
| } |
| |
| if (ictx->display_supported) |
| imon_init_display(ictx, interface); |
| } |
| |
| /* set IR protocol/remote type */ |
| ret = imon_ir_change_protocol(ictx, ictx->ir_type); |
| if (ret) { |
| dev_warn(dev, "%s: failed to set IR protocol, falling back " |
| "to standard iMON protocol mode\n", __func__); |
| ictx->ir_type = IR_TYPE_OTHER; |
| } |
| |
| dev_info(dev, "iMON device (%04x:%04x, intf%d) on " |
| "usb<%d:%d> initialized\n", vendor, product, ifnum, |
| usbdev->bus->busnum, usbdev->devnum); |
| |
| mutex_unlock(&ictx->lock); |
| mutex_unlock(&driver_lock); |
| |
| return 0; |
| |
| fail: |
| mutex_unlock(&driver_lock); |
| dev_err(dev, "unable to register, err %d\n", ret); |
| |
| return ret; |
| } |
| |
| /** |
| * Callback function for USB core API: disconnect |
| */ |
| static void __devexit imon_disconnect(struct usb_interface *interface) |
| { |
| struct imon_context *ictx; |
| struct device *dev; |
| int ifnum; |
| |
| /* prevent races with multi-interface device probing and display_open */ |
| mutex_lock(&driver_lock); |
| |
| ictx = usb_get_intfdata(interface); |
| dev = ictx->dev; |
| ifnum = interface->cur_altsetting->desc.bInterfaceNumber; |
| |
| mutex_lock(&ictx->lock); |
| |
| /* |
| * sysfs_remove_group is safe to call even if sysfs_create_group |
| * hasn't been called |
| */ |
| sysfs_remove_group(&interface->dev.kobj, |
| &imon_display_attribute_group); |
| sysfs_remove_group(&interface->dev.kobj, |
| &imon_rf_attribute_group); |
| |
| usb_set_intfdata(interface, NULL); |
| |
| /* Abort ongoing write */ |
| if (ictx->tx.busy) { |
| usb_kill_urb(ictx->tx_urb); |
| complete_all(&ictx->tx.finished); |
| } |
| |
| if (ifnum == 0) { |
| ictx->dev_present_intf0 = false; |
| usb_kill_urb(ictx->rx_urb_intf0); |
| ir_input_unregister(ictx->idev); |
| if (ictx->display_supported) { |
| if (ictx->display_type == IMON_DISPLAY_TYPE_LCD) |
| usb_deregister_dev(interface, &imon_lcd_class); |
| else |
| usb_deregister_dev(interface, &imon_vfd_class); |
| } |
| } else { |
| ictx->dev_present_intf1 = false; |
| usb_kill_urb(ictx->rx_urb_intf1); |
| if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) |
| input_unregister_device(ictx->touch); |
| } |
| |
| if (!ictx->dev_present_intf0 && !ictx->dev_present_intf1) { |
| if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) |
| del_timer_sync(&ictx->ttimer); |
| mutex_unlock(&ictx->lock); |
| if (!ictx->display_isopen) |
| free_imon_context(ictx); |
| } else { |
| if (ictx->ir_type == IR_TYPE_RC6) |
| del_timer_sync(&ictx->itimer); |
| mutex_unlock(&ictx->lock); |
| } |
| |
| mutex_unlock(&driver_lock); |
| |
| dev_dbg(dev, "%s: iMON device (intf%d) disconnected\n", |
| __func__, ifnum); |
| } |
| |
| static int imon_suspend(struct usb_interface *intf, pm_message_t message) |
| { |
| struct imon_context *ictx = usb_get_intfdata(intf); |
| int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; |
| |
| if (ifnum == 0) |
| usb_kill_urb(ictx->rx_urb_intf0); |
| else |
| usb_kill_urb(ictx->rx_urb_intf1); |
| |
| return 0; |
| } |
| |
| static int imon_resume(struct usb_interface *intf) |
| { |
| int rc = 0; |
| struct imon_context *ictx = usb_get_intfdata(intf); |
| int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; |
| |
| if (ifnum == 0) { |
| usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0, |
| usb_rcvintpipe(ictx->usbdev_intf0, |
| ictx->rx_endpoint_intf0->bEndpointAddress), |
| ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), |
| usb_rx_callback_intf0, ictx, |
| ictx->rx_endpoint_intf0->bInterval); |
| |
| rc = usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC); |
| |
| } else { |
| usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1, |
| usb_rcvintpipe(ictx->usbdev_intf1, |
| ictx->rx_endpoint_intf1->bEndpointAddress), |
| ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), |
| usb_rx_callback_intf1, ictx, |
| ictx->rx_endpoint_intf1->bInterval); |
| |
| rc = usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC); |
| } |
| |
| return rc; |
| } |
| |
| static int __init imon_init(void) |
| { |
| int rc; |
| |
| rc = usb_register(&imon_driver); |
| if (rc) { |
| err("%s: usb register failed(%d)", __func__, rc); |
| rc = -ENODEV; |
| } |
| |
| return rc; |
| } |
| |
| static void __exit imon_exit(void) |
| { |
| usb_deregister(&imon_driver); |
| } |
| |
| module_init(imon_init); |
| module_exit(imon_exit); |