diff options
Diffstat (limited to 'drivers/media/IR/imon.c')
| -rw-r--r-- | drivers/media/IR/imon.c | 2470 |
1 files changed, 0 insertions, 2470 deletions
diff --git a/drivers/media/IR/imon.c b/drivers/media/IR/imon.c deleted file mode 100644 index bc118066bc38..000000000000 --- a/drivers/media/IR/imon.c +++ /dev/null @@ -1,2470 +0,0 @@ -/* - * imon.c: input and display driver for SoundGraph iMON IR/VFD/LCD - * - * Copyright(C) 2010 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. - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ - -#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 "0.9.2" - -#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; - /* 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 *rdev; /* input device for remote */ - struct input_dev *idev; /* input device for panel & IR mouse */ - struct input_dev *touch; /* input device for touchscreen */ - - spinlock_t kc_lock; /* make sure we get keycodes right */ - u32 kc; /* current input keycode */ - u32 last_keycode; /* last reported input keycode */ - u32 rc_scancode; /* the computed remote scancode */ - u8 rc_toggle; /* the computed remote toggle bit */ - u64 ir_type; /* iMON or MCE (RC6) IR protocol? */ - 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_rdev[128]; /* rc input device name */ - char phys_rdev[64]; /* rc input device phys path */ - - char name_idev[128]; /* input device name */ - char phys_idev[64]; /* input device phys path */ - - 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, - .llseek = noop_llseek, -}; - -/* lcd character device file operations */ -static const struct file_operations lcd_fops = { - .owner = THIS_MODULE, - .open = &display_open, - .write = &lcd_write, - .release = &display_close, - .llseek = noop_llseek, -}; - -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 }, - /* 0xffdc iMON MCE VFD */ - { 0x00010000ffffffeell, KEY_VOLUMEUP }, - { 0x01000000ffffffeell, KEY_VOLUMEDOWN }, - /* 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) { - pr_err("could not find interface for minor %d\n", subminor); - retval = -ENODEV; - goto exit; - } - ictx = usb_get_intfdata(interface); - - if (!ictx) { - pr_err("no context found for minor %d\n", subminor); - retval = -ENODEV; - goto exit; - } - - mutex_lock(&ictx->lock); - - if (!ictx->display_supported) { - pr_err("display not supported by device\n"); - retval = -ENODEV; - } else if (ictx->display_isopen) { - pr_err("display port is already open\n"); - 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) { - pr_err("no context for device\n"); - return -ENODEV; - } - - mutex_lock(&ictx->lock); - - if (!ictx->display_supported) { - pr_err("display not supported by device\n"); - retval = -ENODEV; - } else if (!ictx->display_isopen) { - pr_err("display is not open\n"); - 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 */ - pr_err("error submitting urb(%d)\n", retval); - } else { - /* Wait for transmission to complete (or abort) */ - mutex_unlock(&ictx->lock); - retval = wait_for_completion_interruptible( - &ictx->tx.finished); - if (retval) - pr_err("task interrupted\n"); - mutex_lock(&ictx->lock); - - retval = ictx->tx.status; - if (retval) - pr_err("packet tx failed (%d)\n", 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) { - pr_err("no context for device\n"); - return -ENODEV; - } - - if (!ictx->dev_present_intf0) { - pr_err("no iMON device present\n"); - 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) { - pr_err("no context for device\n"); - 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) { - pr_err("send_packet failed for packet %d\n", 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_attr_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_attr_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) { - pr_err("no context for device\n"); - return -ENODEV; - } - - mutex_lock(&ictx->lock); - - if (!ictx->dev_present_intf0) { - pr_err("no iMON device present\n"); - retval = -ENODEV; - goto exit; - } - - if (n_bytes <= 0 || n_bytes > 32) { - pr_err("invalid payload size\n"); - 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) { - pr_err("send packet failed for packet #%d\n", 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) - pr_err("send packet failed for packet #%d\n", 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) { - pr_err("no context for device\n"); - return -ENODEV; - } - - mutex_lock(&ictx->lock); - - if (!ictx->display_supported) { - pr_err("no iMON display present\n"); - retval = -ENODEV; - goto exit; - } - - if (n_bytes != 8) { - pr_err("invalid payload size: %d (expected 8)\n", (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) { - pr_err("send packet failed!\n"); - 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); -} - -/** - * 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; - break; - case IR_TYPE_UNKNOWN: - case IR_TYPE_OTHER: - dev_dbg(dev, "Configuring IR receiver for iMON protocol\n"); - if (pad_stabilize && !nomouse) - 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 && !nomouse) - 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 scancode) -{ - u32 keycode; - u32 release; - bool is_release_code = false; - - /* Look for the initial press of a button */ - keycode = ir_g_keycode_from_table(ictx->rdev, scancode); - ictx->rc_toggle = 0x0; - ictx->rc_scancode = scancode; - - /* Look for the release of a button */ - if (keycode == KEY_RESERVED) { - release = scancode & ~0x4000; - keycode = ir_g_keycode_from_table(ictx->rdev, 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 scancode) -{ - 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 & 0x80000000) - scancode = scancode | MCE_KEY_MASK | MCE_TOGGLE_BIT; - - ictx->rc_scancode = scancode; - keycode = ir_g_keycode_from_table(ictx->rdev, scancode); - - /* not used in mce mode, but make sure we know its false */ - ictx->release_code = false; - - return keycode; -} - -static u32 imon_panel_key_lookup(u64 code) -{ - int i; - 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; - unsigned long flags; - - spin_lock_irqsave(&ictx->kc_lock, flags); - - /* 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; - - spin_unlock_irqrestore(&ictx->kc_lock, flags); - - 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); - spin_lock_irqsave(&ictx->kc_lock, flags); - ictx->last_keycode = ictx->kc; - spin_unlock_irqrestore(&ictx->kc_lock, flags); - } - - 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; - u32 scancode = KEY_RESERVED; - unsigned long flags; - - /* - * 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) { - spin_lock_irqsave(&ictx->kc_lock, - flags); - ictx->kc = KEY_UNKNOWN; - spin_unlock_irqrestore(&ictx->kc_lock, - flags); - return; - } - buf[2] = dir & 0xFF; - buf[3] = (dir >> 8) & 0xFF; - scancode = be32_to_cpu(*((u32 *)buf)); - } - } else { - /* - * Hack alert: instead of using keycodes, we have - * to use hard-coded scancodes here... - */ - if (abs(rel_y) > abs(rel_x)) { - buf[2] = (rel_y > 0) ? 0x7F : 0x80; - buf[3] = 0; - if (rel_y > 0) - scancode = 0x01007f00; /* KEY_DOWN */ - else - scancode = 0x01008000; /* KEY_UP */ - } else { - buf[2] = 0; - buf[3] = (rel_x > 0) ? 0x7F : 0x80; - if (rel_x > 0) - scancode = 0x0100007f; /* KEY_RIGHT */ - else - scancode = 0x01000080; /* 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) { - spin_lock_irqsave(&ictx->kc_lock, flags); - ictx->kc = KEY_UNKNOWN; - spin_unlock_irqrestore(&ictx->kc_lock, flags); - return; - } - buf[2] = dir & 0xFF; - buf[3] = (dir >> 8) & 0xFF; - scancode = be32_to_cpu(*((u32 *)buf)); - } else { - /* - * Hack alert: instead of using keycodes, we have - * to use hard-coded scancodes here... - */ - if (abs(rel_y) > abs(rel_x)) { - buf[2] = (rel_y > 0) ? 0x7F : 0x80; - buf[3] = 0; - if (rel_y > 0) - scancode = 0x01007f00; /* KEY_DOWN */ - else - scancode = 0x01008000; /* KEY_UP */ - } else { - buf[2] = 0; - buf[3] = (rel_x > 0) ? 0x7F : 0x80; - if (rel_x > 0) - scancode = 0x0100007f; /* KEY_RIGHT */ - else - scancode = 0x01000080; /* KEY_LEFT */ - } - } - } - - if (scancode) { - spin_lock_irqsave(&ictx->kc_lock, flags); - ictx->kc = imon_remote_key_lookup(ictx, scancode); - spin_unlock_irqrestore(&ictx->kc_lock, flags); - } -} - -/** - * figure out if these is a press or a release. We don't actually - * care about repeats, as those will be auto-generated within the IR - * subsystem for repeating scancodes. - */ -static int imon_parse_press_type(struct imon_context *ictx, - unsigned char *buf, u8 ktype) -{ - int press_type = 0; - unsigned long flags; - - spin_lock_irqsave(&ictx->kc_lock, flags); - - /* 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, no keyup events */ - else if (ktype == IMON_KEY_MCE) { - ictx->rc_toggle = buf[2]; - press_type = 1; - - /* 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; - - spin_unlock_irqrestore(&ictx->kc_lock, flags); - - 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; - unsigned long flags; - u32 kc; - bool norelease = false; - int i; - u64 scancode; - struct input_dev *rdev = NULL; - struct ir_input_dev *irdev = NULL; - int press_type = 0; - int msec; - struct timeval t; - static struct timeval prev_time = { 0, 0 }; - u8 ktype; - - rdev = ictx->rdev; - irdev = input_get_drvdata(rdev); - - /* 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 */ - if (len == 8 && buf[7] == 0xee) { - scancode = be64_to_cpu(*((u64 *)buf)); - ktype = IMON_KEY_PANEL; - kc = imon_panel_key_lookup(scancode); - } else { - scancode = be32_to_cpu(*((u32 *)buf)); - if (ictx->ir_type == IR_TYPE_RC6) { - ktype = IMON_KEY_IMON; - if (buf[0] == 0x80) - ktype = IMON_KEY_MCE; - kc = imon_mce_key_lookup(ictx, scancode); - } else { - ktype = IMON_KEY_IMON; - kc = imon_remote_key_lookup(ictx, scancode); - } - } - - spin_lock_irqsave(&ictx->kc_lock, flags); - /* 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"); - spin_unlock_irqrestore(&ictx->kc_lock, flags); - return; - } else { - ictx->pad_mouse = 0; - dev_dbg(dev, "mouse mode disabled, passing key value\n"); - } - } - - ictx->kc = kc; - spin_unlock_irqrestore(&ictx->kc_lock, flags); - - /* 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); - return; - - /* 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; - - spin_lock_irqsave(&ictx->kc_lock, flags); - if (ictx->kc == KEY_UNKNOWN) - goto unknown_key; - spin_unlock_irqrestore(&ictx->kc_lock, flags); - - if (ktype != IMON_KEY_PANEL) { - if (press_type == 0) - ir_keyup(irdev); - else { - ir_keydown(rdev, ictx->rc_scancode, ictx->rc_toggle); - spin_lock_irqsave(&ictx->kc_lock, flags); - ictx->last_keycode = ictx->kc; - spin_unlock_irqrestore(&ictx->kc_lock, flags); - } - return; - } - - /* Only panel type events left to process now */ - spin_lock_irqsave(&ictx->kc_lock, flags); - - /* KEY_MUTE repeats from knob need to be suppressed */ - if (ictx->kc == KEY_MUTE && ictx->kc == ictx->last_keycode) { - do_gettimeofday(&t); - msec = tv2int(&t, &prev_time); - prev_time = t; - if (msec < ictx->idev->rep[REP_DELAY]) { - spin_unlock_irqrestore(&ictx->kc_lock, flags); - return; - } - } - kc = ictx->kc; - - spin_unlock_irqrestore(&ictx->kc_lock, flags); - - input_report_key(ictx->idev, kc, press_type); - input_sync(ictx->idev); - - /* panel keys don't generate a release */ - input_report_key(ictx->idev, kc, 0); - input_sync(ictx->idev); - - ictx->last_keycode = kc; - - return; - -unknown_key: - spin_unlock_irqrestore(&ictx->kc_lock, flags); - dev_info(dev, "%s: unknown keypress, code 0x%llx\n", __func__, - (long long)scancode); - 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); -} - -/* - * 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 VFD, MCE IR */ - case 0x9e: - dev_info(ictx->dev, "0xffdc iMON VFD, MCE IR"); - detected_display_type = IMON_DISPLAY_TYPE_VFD; - allowed_protos = IR_TYPE_RC6; - break; - /* iMON LCD, MCE IR */ - 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) -{ - 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 struct input_dev *imon_init_rdev(struct imon_context *ictx) -{ - struct input_dev *rdev; - struct ir_dev_props *props; - int ret; - char *ir_codes = NULL; - const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x88 }; - - rdev = input_allocate_device(); - props = kzalloc(sizeof(*props), GFP_KERNEL); - if (!rdev || !props) { - dev_err(ictx->dev, "remote control dev allocation failed\n"); - goto out; - } - - snprintf(ictx->name_rdev, sizeof(ictx->name_rdev), - "iMON Remote (%04x:%04x)", ictx->vendor, ictx->product); - usb_make_path(ictx->usbdev_intf0, ictx->phys_rdev, - sizeof(ictx->phys_rdev)); - strlcat(ictx->phys_rdev, "/input0", sizeof(ictx->phys_rdev)); - - rdev->name = ictx->name_rdev; - rdev->phys = ictx->phys_rdev; - usb_to_input_id(ictx->usbdev_intf0, &rdev->id); - rdev->dev.parent = ictx->dev; - rdev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); - input_set_drvdata(rdev, ictx); - - props->priv = ictx; - props->driver_type = RC_DRIVER_SCANCODE; - props->allowed_protos = IR_TYPE_OTHER | IR_TYPE_RC6; /* iMON PAD or MCE */ - props->change_protocol = imon_ir_change_protocol; - ictx->props = props; - - /* 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(ictx->dev, "panel buttons/knobs setup failed\n"); - - if (ictx->product == 0xffdc) - imon_get_ffdc_type(ictx); - - imon_set_display_type(ictx); - - if (ictx->ir_type == IR_TYPE_RC6) - ir_codes = RC_MAP_IMON_MCE; - else - ir_codes = RC_MAP_IMON_PAD; - - ret = ir_input_register(rdev, ir_codes, props, MOD_NAME); - if (ret < 0) { - dev_err(ictx->dev, "remote input dev register failed\n"); - goto out; - } - - return rdev; - -out: - kfree(props); - input_free_device(rdev); - return NULL; -} - -static struct input_dev *imon_init_idev(struct imon_context *ictx) -{ - struct input_dev *idev; - int ret, i; - - idev = input_allocate_device(); - if (!idev) { - dev_err(ictx->dev, "input dev allocation failed\n"); - goto out; - } - - snprintf(ictx->name_idev, sizeof(ictx->name_idev), - "iMON Panel, Knob and Mouse(%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, "/input1", 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); - } - - usb_to_input_id(ictx->usbdev_intf0, &idev->id); - idev->dev.parent = ictx->dev; - input_set_drvdata(idev, ictx); - - ret = input_register_device(idev); - if (ret < 0) { - dev_err(ictx->dev, "input dev register failed\n"); - goto out; - } - - return idev; - -out: - input_free_device(idev); - 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, "/input2", 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) - pr_err("no valid input (IR) endpoint found\n"); - - 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); - spin_lock_init(&ictx->kc_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; - } - - ictx->rdev = imon_init_rdev(ictx); - if (!ictx->rdev) { - dev_err(dev, "%s: rc device setup failed\n", __func__); - goto rdev_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) { - pr_err("usb_submit_urb failed for intf0 (%d)\n", ret); - goto urb_submit_failed; - } - - return ictx; - -urb_submit_failed: - ir_input_unregister(ictx->rdev); -rdev_setup_failed: - input_unregister_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) { - pr_err("usb_alloc_urb failed for IR urb\n"); - 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) { - pr_err("usb_submit_urb failed for intf1 (%d)\n", ret); - goto urb_submit_failed; - } - - return ictx; - -urb_submit_failed: - if (ictx->touch) - input_unregister_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; -} - -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_attr_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; - - 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) { - pr_err("failed to initialize context!\n"); - ret = -ENODEV; - goto fail; - } - - } else { - /* this is the secondary interface on the device */ - ictx = imon_init_intf1(interface, first_if_ctx); - if (!ictx) { - pr_err("failed to attach to context!\n"); - ret = -ENODEV; - goto fail; - } - - } - - usb_set_intfdata(interface, ictx); - - if (ifnum == 0) { - if (product == 0xffdc && ictx->rf_device) { - sysfs_err = sysfs_create_group(&interface->dev.kobj, - &imon_rf_attr_group); - if (sysfs_err) - pr_err("Could not create RF sysfs entries(%d)\n", - sysfs_err); - } - - if (ictx->display_supported) - imon_init_display(ictx, interface); - } - - 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_attr_group); - sysfs_remove_group(&interface->dev.kobj, &imon_rf_attr_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); - input_unregister_device(ictx->idev); - ir_input_unregister(ictx->rdev); - 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 - 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) { - pr_err("usb register failed(%d)\n", rc); - rc = -ENODEV; - } - - return rc; -} - -static void __exit imon_exit(void) -{ - usb_deregister(&imon_driver); -} - -module_init(imon_init); -module_exit(imon_exit); |