| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jarod Wilson | 9548 | 81.91% | 24 | 27.91% |
| Ulrich Eckhardt | 976 | 8.37% | 4 | 4.65% |
| David Härdeman | 342 | 2.93% | 7 | 8.14% |
| Flavius Georgescu | 212 | 1.82% | 1 | 1.16% |
| Tetsuo Handa | 134 | 1.15% | 1 | 1.16% |
| Sean Young | 84 | 0.72% | 8 | 9.30% |
| Mauro Carvalho Chehab | 65 | 0.56% | 7 | 8.14% |
| Kevin Baradon | 58 | 0.50% | 4 | 4.65% |
| Joe Perches | 47 | 0.40% | 1 | 1.16% |
| Alexey Khoroshilov | 24 | 0.21% | 1 | 1.16% |
| Darius Rad | 22 | 0.19% | 1 | 1.16% |
| Oliver Neukum | 21 | 0.18% | 3 | 3.49% |
| Chunyan Zhang | 18 | 0.15% | 1 | 1.16% |
| Arvind Yadav | 18 | 0.15% | 3 | 3.49% |
| Kees Cook | 14 | 0.12% | 1 | 1.16% |
| Arnd Bergmann | 13 | 0.11% | 2 | 2.33% |
| Lin Yi | 12 | 0.10% | 1 | 1.16% |
| Daniel Wagner | 12 | 0.10% | 1 | 1.16% |
| Zhen Lei | 6 | 0.05% | 1 | 1.16% |
| SF Markus Elfring | 4 | 0.03% | 1 | 1.16% |
| Hans Verkuil | 4 | 0.03% | 1 | 1.16% |
| Geliang Tang | 4 | 0.03% | 1 | 1.16% |
| Himangi Saraogi | 3 | 0.03% | 1 | 1.16% |
| Andi Shyti | 3 | 0.03% | 1 | 1.16% |
| Colin Ian King | 2 | 0.02% | 1 | 1.16% |
| Alexandre Lissy | 2 | 0.02% | 1 | 1.16% |
| Thomas Gleixner | 2 | 0.02% | 1 | 1.16% |
| Greg Kroah-Hartman | 2 | 0.02% | 1 | 1.16% |
| Lucas De Marchi | 1 | 0.01% | 1 | 1.16% |
| ye xingchen | 1 | 0.01% | 1 | 1.16% |
| Dan Carpenter | 1 | 0.01% | 1 | 1.16% |
| Jonathan McCrohan | 1 | 0.01% | 1 | 1.16% |
| Alexander A. Klimov | 1 | 0.01% | 1 | 1.16% |
| Total | 11657 | 86 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * 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. */ #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ #include <linux/errno.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/ktime.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/uaccess.h> #include <linux/ratelimit.h> #include <linux/input.h> #include <linux/usb.h> #include <linux/usb/input.h> #include <media/rc-core.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 "0.9.4" #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 __user *buf, size_t n_bytes, loff_t *pos); /* LCD file_operations override function prototypes */ static ssize_t lcd_write(struct file *file, const char __user *buf, size_t n_bytes, loff_t *pos); /*** G L O B A L S ***/ struct imon_panel_key_table { u64 hw_code; u32 keycode; }; struct imon_usb_dev_descr { __u16 flags; #define IMON_NO_FLAGS 0 #define IMON_NEED_20MS_PKT_DELAY 1 #define IMON_SUPPRESS_REPEATED_KEYS 2 struct imon_panel_key_table key_table[]; }; struct imon_context { struct device *dev; /* 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]; unsigned int send_packet_delay; 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 rc_dev *rdev; /* rc-core 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 rc_proto; /* 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 */ const struct imon_usb_dev_descr *dev_descr; /* device description with key */ /* table for front panels */ /* * Fields for deferring free_imon_context(). * * Since reference to "struct imon_context" is stored into * "struct file"->private_data, we need to remember * how many file descriptors might access this "struct imon_context". */ refcount_t users; /* * Use a flag for telling display_open()/vfd_write()/lcd_write() that * imon_disconnect() was already called. */ bool disconnected; /* * We need to wait for RCU grace period in order to allow * display_open() to safely check ->disconnected and increment ->users. */ struct rcu_head rcu; }; #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, }; 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 imon_usb_dev_descr imon_default_table = { .flags = IMON_NO_FLAGS, .key_table = { { 0x000000000f00ffeell, KEY_MEDIA }, /* Go */ { 0x000000001200ffeell, KEY_UP }, { 0x000000001300ffeell, KEY_DOWN }, { 0x000000001400ffeell, KEY_LEFT }, { 0x000000001500ffeell, KEY_RIGHT }, { 0x000000001600ffeell, KEY_ENTER }, { 0x000000001700ffeell, KEY_ESC }, { 0x000000001f00ffeell, KEY_AUDIO }, { 0x000000002000ffeell, KEY_VIDEO }, { 0x000000002100ffeell, KEY_CAMERA }, { 0x000000002700ffeell, KEY_DVD }, { 0x000000002300ffeell, KEY_TV }, { 0x000000002b00ffeell, KEY_EXIT }, { 0x000000002c00ffeell, KEY_SELECT }, { 0x000000002d00ffeell, KEY_MENU }, { 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 }, { 0x00000001ffffffeell, KEY_MUTE }, { 0x0000000fffffffeell, KEY_MEDIA }, { 0x00000012ffffffeell, KEY_UP }, { 0x00000013ffffffeell, KEY_DOWN }, { 0x00000014ffffffeell, KEY_LEFT }, { 0x00000015ffffffeell, KEY_RIGHT }, { 0x00000016ffffffeell, KEY_ENTER }, { 0x00000017ffffffeell, KEY_ESC }, /* iMON Knob values */ { 0x000100ffffffffeell, KEY_VOLUMEUP }, { 0x010000ffffffffeell, KEY_VOLUMEDOWN }, { 0x000008ffffffffeell, KEY_MUTE }, { 0, KEY_RESERVED }, } }; static const struct imon_usb_dev_descr imon_OEM_VFD = { .flags = IMON_NEED_20MS_PKT_DELAY, .key_table = { { 0x000000000f00ffeell, KEY_MEDIA }, /* Go */ { 0x000000001200ffeell, KEY_UP }, { 0x000000001300ffeell, KEY_DOWN }, { 0x000000001400ffeell, KEY_LEFT }, { 0x000000001500ffeell, KEY_RIGHT }, { 0x000000001600ffeell, KEY_ENTER }, { 0x000000001700ffeell, KEY_ESC }, { 0x000000001f00ffeell, KEY_AUDIO }, { 0x000000002b00ffeell, KEY_EXIT }, { 0x000000002c00ffeell, KEY_SELECT }, { 0x000000002d00ffeell, KEY_MENU }, { 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 }, { 0x00000001ffffffeell, KEY_MUTE }, { 0x0000000fffffffeell, KEY_MEDIA }, { 0x00000012ffffffeell, KEY_UP }, { 0x00000013ffffffeell, KEY_DOWN }, { 0x00000014ffffffeell, KEY_LEFT }, { 0x00000015ffffffeell, KEY_RIGHT }, { 0x00000016ffffffeell, KEY_ENTER }, { 0x00000017ffffffeell, KEY_ESC }, /* iMON Knob values */ { 0x000100ffffffffeell, KEY_VOLUMEUP }, { 0x010000ffffffffeell, KEY_VOLUMEDOWN }, { 0x000008ffffffffeell, KEY_MUTE }, { 0, KEY_RESERVED }, } }; /* imon receiver front panel/knob key table for DH102*/ static const struct imon_usb_dev_descr imon_DH102 = { .flags = IMON_NO_FLAGS, .key_table = { { 0x000100000000ffeell, KEY_VOLUMEUP }, { 0x010000000000ffeell, KEY_VOLUMEDOWN }, { 0x000000010000ffeell, KEY_MUTE }, { 0x0000000f0000ffeell, KEY_MEDIA }, { 0x000000120000ffeell, KEY_UP }, { 0x000000130000ffeell, KEY_DOWN }, { 0x000000140000ffeell, KEY_LEFT }, { 0x000000150000ffeell, KEY_RIGHT }, { 0x000000160000ffeell, KEY_ENTER }, { 0x000000170000ffeell, KEY_ESC }, { 0x0000002b0000ffeell, KEY_EXIT }, { 0x0000002c0000ffeell, KEY_SELECT }, { 0x0000002d0000ffeell, KEY_MENU }, { 0, KEY_RESERVED } } }; /* imon ultrabay front panel key table */ static const struct imon_usb_dev_descr ultrabay_table = { .flags = IMON_SUPPRESS_REPEATED_KEYS, .key_table = { { 0x0000000f0000ffeell, KEY_MEDIA }, /* Go */ { 0x000000000100ffeell, KEY_UP }, { 0x000000000001ffeell, KEY_DOWN }, { 0x000000160000ffeell, KEY_ENTER }, { 0x0000001f0000ffeell, KEY_AUDIO }, /* Music */ { 0x000000200000ffeell, KEY_VIDEO }, /* Movie */ { 0x000000210000ffeell, KEY_CAMERA }, /* Photo */ { 0x000000270000ffeell, KEY_DVD }, /* DVD */ { 0x000000230000ffeell, KEY_TV }, /* TV */ { 0x000000050000ffeell, KEY_PREVIOUS }, /* Previous */ { 0x000000070000ffeell, KEY_REWIND }, { 0x000000040000ffeell, KEY_STOP }, { 0x000000020000ffeell, KEY_PLAYPAUSE }, { 0x000000080000ffeell, KEY_FASTFORWARD }, { 0x000000060000ffeell, KEY_NEXT }, /* Next */ { 0x000100000000ffeell, KEY_VOLUMEUP }, { 0x010000000000ffeell, KEY_VOLUMEDOWN }, { 0x000000010000ffeell, KEY_MUTE }, { 0, KEY_RESERVED }, } }; /* * 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 const 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), .driver_info = (unsigned long)&imon_default_table }, /* * 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), .driver_info = (unsigned long)&imon_DH102 }, /* SoundGraph iMON OEM Touch LCD (IR & 4.3" VGA LCD) */ { USB_DEVICE(0x15c2, 0x0035), .driver_info = (unsigned long)&imon_default_table}, /* SoundGraph iMON OEM VFD (IR & VFD) */ { USB_DEVICE(0x15c2, 0x0036), .driver_info = (unsigned long)&imon_OEM_VFD }, /* device specifics unknown */ { USB_DEVICE(0x15c2, 0x0037), .driver_info = (unsigned long)&imon_default_table}, /* SoundGraph iMON OEM LCD (IR & LCD) */ { USB_DEVICE(0x15c2, 0x0038), .driver_info = (unsigned long)&imon_default_table}, /* SoundGraph iMON UltraBay (IR & LCD) */ { USB_DEVICE(0x15c2, 0x0039), .driver_info = (unsigned long)&imon_default_table}, /* device specifics unknown */ { USB_DEVICE(0x15c2, 0x003a), .driver_info = (unsigned long)&imon_default_table}, /* device specifics unknown */ { USB_DEVICE(0x15c2, 0x003b), .driver_info = (unsigned long)&imon_default_table}, /* SoundGraph iMON OEM Inside (IR only) */ { USB_DEVICE(0x15c2, 0x003c), .driver_info = (unsigned long)&imon_default_table}, /* device specifics unknown */ { USB_DEVICE(0x15c2, 0x003d), .driver_info = (unsigned long)&imon_default_table}, /* device specifics unknown */ { USB_DEVICE(0x15c2, 0x003e), .driver_info = (unsigned long)&imon_default_table}, /* device specifics unknown */ { USB_DEVICE(0x15c2, 0x003f), .driver_info = (unsigned long)&imon_default_table}, /* device specifics unknown */ { USB_DEVICE(0x15c2, 0x0040), .driver_info = (unsigned long)&imon_default_table}, /* SoundGraph iMON MINI (IR only) */ { USB_DEVICE(0x15c2, 0x0041), .driver_info = (unsigned long)&imon_default_table}, /* Antec Veris Multimedia Station EZ External (IR only) */ { USB_DEVICE(0x15c2, 0x0042), .driver_info = (unsigned long)&imon_default_table}, /* Antec Veris Multimedia Station Basic Internal (IR only) */ { USB_DEVICE(0x15c2, 0x0043), .driver_info = (unsigned long)&imon_default_table}, /* Antec Veris Multimedia Station Elite (IR & VFD) */ { USB_DEVICE(0x15c2, 0x0044), .driver_info = (unsigned long)&imon_default_table}, /* Antec Veris Multimedia Station Premiere (IR & LCD) */ { USB_DEVICE(0x15c2, 0x0045), .driver_info = (unsigned long)&imon_default_table}, /* device specifics unknown */ { USB_DEVICE(0x15c2, 0x0046), .driver_info = (unsigned long)&imon_default_table}, {} }; /* 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, }; /* 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); WARN_ON(ictx->dev_present_intf0); usb_free_urb(ictx->rx_urb_intf0); WARN_ON(ictx->dev_present_intf1); usb_free_urb(ictx->rx_urb_intf1); kfree_rcu(ictx, rcu); 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; 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; } rcu_read_lock(); ictx = usb_get_intfdata(interface); if (!ictx || ictx->disconnected || !refcount_inc_not_zero(&ictx->users)) { rcu_read_unlock(); pr_err("no context found for minor %d\n", subminor); retval = -ENODEV; goto exit; } rcu_read_unlock(); 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); if (retval && refcount_dec_and_test(&ictx->users)) free_imon_context(ictx); exit: 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 = file->private_data; int retval = 0; 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"); } mutex_unlock(&ictx->lock); if (refcount_dec_and_test(&ictx->users)) free_imon_context(ictx); return retval; } /* * Sends a packet to the device -- this function must be called with * ictx->lock held, or its unlock/lock sequence while waiting for tx * to complete can/will lead to a deadlock. */ 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(*control_req), 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; } reinit_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_ratelimited("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) { usb_kill_urb(ictx->tx_urb); pr_err_ratelimited("task interrupted\n"); } mutex_lock(&ictx->lock); retval = ictx->tx.status; if (retval) pr_err_ratelimited("packet tx failed (%d)\n", retval); } kfree(control_req); /* * Induce a mandatory 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(ictx->send_packet_delay); set_current_state(TASK_INTERRUPTIBLE); 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) { 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)); return send_packet(ictx); } /* * 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 associate_remote_show(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) strscpy(buf, "associating\n", PAGE_SIZE); else strscpy(buf, "closed\n", PAGE_SIZE); dev_info(d, "Visit https://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 associate_remote_store(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 imon_clock_show(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 imon_clock_store(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_RW(imon_clock); static DEVICE_ATTR_RW(associate_remote); static struct attribute *imon_display_sysfs_entries[] = { &dev_attr_imon_clock.attr, NULL }; static const 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 const 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 __user *buf, size_t n_bytes, loff_t *pos) { int i; int offset; int seq; int retval = 0; struct imon_context *ictx = file->private_data; static const unsigned char vfd_packet6[] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF }; if (ictx->disconnected) return -ENODEV; mutex_lock(&ictx->lock); if (!ictx->dev_present_intf0) { pr_err_ratelimited("no iMON device present\n"); retval = -ENODEV; goto exit; } if (n_bytes <= 0 || n_bytes > 32) { pr_err_ratelimited("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_ratelimited("send packet #%d failed\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_ratelimited("send packet #%d failed\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 __user *buf, size_t n_bytes, loff_t *pos) { int retval = 0; struct imon_context *ictx = file->private_data; if (ictx->disconnected) return -ENODEV; mutex_lock(&ictx->lock); if (!ictx->display_supported) { pr_err_ratelimited("no iMON display present\n"); retval = -ENODEV; goto exit; } if (n_bytes != 8) { pr_err_ratelimited("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_ratelimited("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(struct timer_list *t) { struct imon_context *ictx = from_timer(ictx, t, ttimer); 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. * * This function gets called two different ways, one way is from * rc_register_device, for initial protocol selection/setup, and the other is * via a userspace-initiated protocol change request, either by direct sysfs * prodding or by something like ir-keytable. In the rc_register_device case, * the imon context lock is already held, but when initiated from userspace, * it is not, so we must acquire it prior to calling send_packet, which * requires that the lock is held. */ static int imon_ir_change_protocol(struct rc_dev *rc, u64 *rc_proto) { int retval; struct imon_context *ictx = rc->priv; struct device *dev = ictx->dev; bool unlock = false; unsigned char ir_proto_packet[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 }; if (*rc_proto && !(*rc_proto & rc->allowed_protocols)) dev_warn(dev, "Looks like you're trying to use an IR protocol this device does not support\n"); if (*rc_proto & RC_PROTO_BIT_RC6_MCE) { dev_dbg(dev, "Configuring IR receiver for MCE protocol\n"); ir_proto_packet[0] = 0x01; *rc_proto = RC_PROTO_BIT_RC6_MCE; } else if (*rc_proto & RC_PROTO_BIT_IMON) { dev_dbg(dev, "Configuring IR receiver for iMON protocol\n"); if (!pad_stabilize) dev_dbg(dev, "PAD stabilize functionality disabled\n"); /* ir_proto_packet[0] = 0x00; // already the default */ *rc_proto = RC_PROTO_BIT_IMON; } else { dev_warn(dev, "Unsupported IR protocol specified, overriding to iMON IR protocol\n"); if (!pad_stabilize) dev_dbg(dev, "PAD stabilize functionality disabled\n"); /* ir_proto_packet[0] = 0x00; // already the default */ *rc_proto = RC_PROTO_BIT_IMON; } memcpy(ictx->usb_tx_buf, &ir_proto_packet, sizeof(ir_proto_packet)); if (!mutex_is_locked(&ictx->lock)) { unlock = true; mutex_lock(&ictx->lock); } retval = send_packet(ictx); if (retval) goto out; ictx->rc_proto = *rc_proto; ictx->pad_mouse = false; out: if (unlock) mutex_unlock(&ictx->lock); return retval; } /* * 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) { ktime_t ct; static ktime_t prev_time; static ktime_t hit_time; static int x, y, prev_result, hits; int result = 0; long msec, msec_hit; ct = ktime_get(); msec = ktime_ms_delta(ct, prev_time); msec_hit = ktime_ms_delta(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 = rc_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 = rc_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 = rc_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(struct imon_context *ictx, u64 code) { const struct imon_panel_key_table *key_table; u32 keycode = KEY_RESERVED; int i; key_table = ictx->dev_descr->key_table; for (i = 0; key_table[i].hw_code != 0; i++) { if (key_table[i].hw_code == (code | 0xffee)) { keycode = key_table[i].keycode; break; } } ictx->release_code = false; return keycode; } static bool imon_mouse_event(struct imon_context *ictx, unsigned char *buf, int len) { signed 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; signed 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 tendency 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->rc_proto == RC_PROTO_BIT_IMON && 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(*((__be32 *)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 endianness. Extract direction from buffer, rotate endianness, * 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->rc_proto == RC_PROTO_BIT_IMON && 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(*((__be32 *)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; u64 scancode; int press_type = 0; ktime_t t; static ktime_t prev_time; u8 ktype; /* 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(*((__be64 *)buf)); ktype = IMON_KEY_PANEL; kc = imon_panel_key_lookup(ictx, scancode); ictx->release_code = false; } else { scancode = be32_to_cpu(*((__be32 *)buf)); if (ictx->rc_proto == RC_PROTO_BIT_RC6_MCE) { 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; 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 = false; 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->touch && 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); } if (debug) { printk(KERN_INFO "intf%d decoded packet: %*ph\n", intf, len, buf); } press_type = imon_parse_press_type(ictx, buf, ktype); if (press_type < 0) goto not_input_data; if (ktype != IMON_KEY_PANEL) { if (press_type == 0) rc_keyup(ictx->rdev); else { enum rc_proto proto; if (ictx->rc_proto == RC_PROTO_BIT_RC6_MCE) proto = RC_PROTO_RC6_MCE; else if (ictx->rc_proto == RC_PROTO_BIT_IMON) proto = RC_PROTO_IMON; else return; rc_keydown(ictx->rdev, proto, 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); t = ktime_get(); /* KEY repeats from knob and panel that need to be suppressed */ if (ictx->kc == KEY_MUTE || ictx->dev_descr->flags & IMON_SUPPRESS_REPEATED_KEYS) { if (ictx->kc == ictx->last_keycode && ktime_ms_delta(t, prev_time) < ictx->idev->rep[REP_DELAY]) { spin_unlock_irqrestore(&ictx->kc_lock, flags); return; } } prev_time = t; 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); spin_lock_irqsave(&ictx->kc_lock, flags); ictx->last_keycode = kc; spin_unlock_irqrestore(&ictx->kc_lock, flags); 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; /* * if we get a callback before we're done configuring the hardware, we * can't yet process the data, as there's nowhere to send it, but we * still need to submit a new rx URB to avoid wedging the hardware */ if (!ictx->dev_present_intf0) goto out; 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; } out: 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; /* * if we get a callback before we're done configuring the hardware, we * can't yet process the data, as there's nowhere to send it, but we * still need to submit a new rx URB to avoid wedging the hardware */ if (!ictx->dev_present_intf1) goto out; 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; } out: 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 = RC_PROTO_BIT_IMON; 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 0x30: case 0x85: dev_info(ictx->dev, "0xffdc iMON VFD, iMON IR"); detected_display_type = IMON_DISPLAY_TYPE_VFD; break; /* iMON VFD, MCE IR */ case 0x46: case 0x9e: dev_info(ictx->dev, "0xffdc iMON VFD, MCE IR"); detected_display_type = IMON_DISPLAY_TYPE_VFD; allowed_protos = RC_PROTO_BIT_RC6_MCE; break; /* iMON VFD, iMON or MCE IR */ case 0x7e: dev_info(ictx->dev, "0xffdc iMON VFD, iMON or MCE IR"); detected_display_type = IMON_DISPLAY_TYPE_VFD; allowed_protos |= RC_PROTO_BIT_RC6_MCE; 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 = RC_PROTO_BIT_RC6_MCE; break; /* no display, iMON IR */ case 0x26: dev_info(ictx->dev, "0xffdc iMON Inside, iMON IR"); ictx->display_supported = false; break; /* Soundgraph iMON UltraBay */ case 0x98: dev_info(ictx->dev, "0xffdc iMON UltraBay, LCD + IR"); detected_display_type = IMON_DISPLAY_TYPE_LCD; allowed_protos = RC_PROTO_BIT_IMON | RC_PROTO_BIT_RC6_MCE; ictx->dev_descr = &ultrabay_table; break; default: dev_info(ictx->dev, "Unknown 0xffdc device, defaulting to VFD and iMON IR"); detected_display_type = IMON_DISPLAY_TYPE_VFD; /* * We don't know which one it is, allow user to set the * RC6 one from userspace if IMON wasn't correct. */ allowed_protos |= RC_PROTO_BIT_RC6_MCE; break; } printk(KERN_CONT " (id 0x%02x)\n", ffdc_cfg_byte); ictx->display_type = detected_display_type; ictx->rc_proto = 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 rc_dev *imon_init_rdev(struct imon_context *ictx) { struct rc_dev *rdev; int ret; static const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88 }; rdev = rc_allocate_device(RC_DRIVER_SCANCODE); if (!rdev) { 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->device_name = ictx->name_rdev; rdev->input_phys = ictx->phys_rdev; usb_to_input_id(ictx->usbdev_intf0, &rdev->input_id); rdev->dev.parent = ictx->dev; rdev->priv = ictx; /* iMON PAD or MCE */ rdev->allowed_protocols = RC_PROTO_BIT_IMON | RC_PROTO_BIT_RC6_MCE; rdev->change_protocol = imon_ir_change_protocol; rdev->driver_name = MOD_NAME; /* 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); rdev->allowed_protocols = ictx->rc_proto; } imon_set_display_type(ictx); if (ictx->rc_proto == RC_PROTO_BIT_RC6_MCE) rdev->map_name = RC_MAP_IMON_MCE; else rdev->map_name = RC_MAP_IMON_PAD; ret = rc_register_device(rdev); if (ret < 0) { dev_err(ictx->dev, "remote input dev register failed\n"); goto out; } return rdev; out: rc_free_device(rdev); return NULL; } static struct input_dev *imon_init_idev(struct imon_context *ictx) { const struct imon_panel_key_table *key_table; struct input_dev *idev; int ret, i; key_table = ictx->dev_descr->key_table; idev = input_allocate_device(); if (!idev) 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; key_table[i].hw_code != 0; i++) { u32 kc = 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) 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(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 = usb_endpoint_type(ep); 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, const struct usb_device_id *id) { 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(*ictx), GFP_KERNEL); if (!ictx) goto exit; rx_urb = usb_alloc_urb(0, GFP_KERNEL); if (!rx_urb) goto rx_urb_alloc_failed; tx_urb = usb_alloc_urb(0, GFP_KERNEL); if (!tx_urb) 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->rx_urb_intf0 = rx_urb; ictx->tx_urb = tx_urb; ictx->rf_device = false; init_completion(&ictx->tx.finished); ictx->vendor = le16_to_cpu(ictx->usbdev_intf0->descriptor.idVendor); ictx->product = le16_to_cpu(ictx->usbdev_intf0->descriptor.idProduct); /* save drive info for later accessing the panel/knob key table */ ictx->dev_descr = (struct imon_usb_dev_descr *)id->driver_info; /* default send_packet delay is 5ms but some devices need more */ ictx->send_packet_delay = ictx->dev_descr->flags & IMON_NEED_20MS_PKT_DELAY ? 20 : 5; ret = -ENODEV; iface_desc = intf->cur_altsetting; if (!imon_find_endpoints(ictx, iface_desc)) { goto find_endpoint_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; } 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; } ictx->dev_present_intf0 = true; mutex_unlock(&ictx->lock); return ictx; rdev_setup_failed: input_unregister_device(ictx->idev); idev_setup_failed: usb_kill_urb(ictx->rx_urb_intf0); urb_submit_failed: find_endpoint_failed: usb_put_dev(ictx->usbdev_intf0); 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) goto rx_urb_alloc_failed; mutex_lock(&ictx->lock); if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { timer_setup(&ictx->ttimer, imon_touch_display_timeout, 0); } ictx->usbdev_intf1 = usb_get_dev(interface_to_usbdev(intf)); 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; } ictx->dev_present_intf1 = true; mutex_unlock(&ictx->lock); return ictx; urb_submit_failed: if (ictx->touch) input_unregister_device(ictx->touch); touch_setup_failed: find_endpoint_failed: usb_put_dev(ictx->usbdev_intf1); ictx->usbdev_intf1 = NULL; mutex_unlock(&ictx->lock); usb_free_urb(rx_urb); ictx->rx_urb_intf1 = NULL; rx_urb_alloc_failed: dev_err(ictx->dev, "unable to initialize intf1, 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 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, sysfs_err; int ret = 0; struct imon_context *ictx = NULL; u16 vendor, product; 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); first_if = usb_ifnum_to_if(usbdev, 0); if (!first_if) { ret = -ENODEV; goto fail; } if (ifnum == 0) { ictx = imon_init_intf0(interface, id); if (!ictx) { pr_err("failed to initialize context!\n"); ret = -ENODEV; goto fail; } refcount_set(&ictx->users, 1); } else { /* this is the secondary interface on the device */ struct imon_context *first_if_ctx = usb_get_intfdata(first_if); /* fail early if first intf failed to register */ if (!first_if_ctx) { ret = -ENODEV; goto fail; } ictx = imon_init_intf1(interface, first_if_ctx); if (!ictx) { pr_err("failed to attach to context!\n"); ret = -ENODEV; goto fail; } refcount_inc(&ictx->users); } 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); usb_put_dev(usbdev); return 0; fail: usb_put_dev(usbdev); dev_err(dev, "unable to register, err %d\n", ret); return ret; } /* * Callback function for USB core API: disconnect */ static void imon_disconnect(struct usb_interface *interface) { struct imon_context *ictx; struct device *dev; int ifnum; ictx = usb_get_intfdata(interface); ictx->disconnected = true; dev = ictx->dev; ifnum = interface->cur_altsetting->desc.bInterfaceNumber; /* * 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(&ictx->tx.finished); } if (ifnum == 0) { ictx->dev_present_intf0 = false; usb_kill_urb(ictx->rx_urb_intf0); input_unregister_device(ictx->idev); rc_unregister_device(ictx->rdev); if (ictx->display_supported) { if (ictx->display_type == IMON_DISPLAY_TYPE_LCD) usb_deregister_dev(interface, &imon_lcd_class); else if (ictx->display_type == IMON_DISPLAY_TYPE_VFD) usb_deregister_dev(interface, &imon_vfd_class); } usb_put_dev(ictx->usbdev_intf0); } else { ictx->dev_present_intf1 = false; usb_kill_urb(ictx->rx_urb_intf1); if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { del_timer_sync(&ictx->ttimer); input_unregister_device(ictx->touch); } usb_put_dev(ictx->usbdev_intf1); } if (refcount_dec_and_test(&ictx->users)) free_imon_context(ictx); 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_NOIO); } 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_NOIO); } return rc; } module_usb_driver(imon_driver);
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