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authorJarod Wilson <jarod@redhat.com>2010-04-16 17:29:02 -0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-05-19 11:57:42 -0400
commit21677cfc562a27e099719d413287bc8d1d24deb7 (patch)
treeab79b7cc6efbc329a3b0b3c1649932cd430c1d9f /drivers/media/IR/imon.c
parent1159f838c0a334855c05c7c94f7a20799c57442d (diff)
V4L/DVB: ir-core: add imon driver
This is a new driver for the SoundGraph iMON and Antec Veris IR/display devices commonly found in many home theater pc cases and as after-market case additions. [mchehab@redhat.com: add KERN_CONT on line 2098 to shutup checkpatc.pl] Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/IR/imon.c')
-rw-r--r--drivers/media/IR/imon.c2417
1 files changed, 2417 insertions, 0 deletions
diff --git a/drivers/media/IR/imon.c b/drivers/media/IR/imon.c
new file mode 100644
index 000000000000..170fb9f2ca26
--- /dev/null
+++ b/drivers/media/IR/imon.c
@@ -0,0 +1,2417 @@
1/*
2 * imon.c: input and display driver for SoundGraph iMON IR/VFD/LCD
3 *
4 * Copyright(C) 2009 Jarod Wilson <jarod@wilsonet.com>
5 * Portions based on the original lirc_imon driver,
6 * Copyright(C) 2004 Venky Raju(dev@venky.ws)
7 *
8 * Huge thanks to R. Geoff Newbury for invaluable debugging on the
9 * 0xffdc iMON devices, and for sending me one to hack on, without
10 * which the support for them wouldn't be nearly as good. Thanks
11 * also to the numerous 0xffdc device owners that tested auto-config
12 * support for me and provided debug dumps from their devices.
13 *
14 * imon is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29#include <linux/errno.h>
30#include <linux/init.h>
31#include <linux/kernel.h>
32#include <linux/module.h>
33#include <linux/slab.h>
34#include <linux/uaccess.h>
35
36#include <linux/input.h>
37#include <linux/usb.h>
38#include <linux/usb/input.h>
39#include <media/ir-core.h>
40
41#include <linux/time.h>
42#include <linux/timer.h>
43
44#define MOD_AUTHOR "Jarod Wilson <jarod@wilsonet.com>"
45#define MOD_DESC "Driver for SoundGraph iMON MultiMedia IR/Display"
46#define MOD_NAME "imon"
47#define MOD_VERSION "0.9.1"
48
49#define DISPLAY_MINOR_BASE 144
50#define DEVICE_NAME "lcd%d"
51
52#define BUF_CHUNK_SIZE 8
53#define BUF_SIZE 128
54
55#define BIT_DURATION 250 /* each bit received is 250us */
56
57#define IMON_CLOCK_ENABLE_PACKETS 2
58#define IMON_KEY_RELEASE_OFFSET 1000
59
60/*** P R O T O T Y P E S ***/
61
62/* USB Callback prototypes */
63static int imon_probe(struct usb_interface *interface,
64 const struct usb_device_id *id);
65static void imon_disconnect(struct usb_interface *interface);
66static void usb_rx_callback_intf0(struct urb *urb);
67static void usb_rx_callback_intf1(struct urb *urb);
68static void usb_tx_callback(struct urb *urb);
69
70/* suspend/resume support */
71static int imon_resume(struct usb_interface *intf);
72static int imon_suspend(struct usb_interface *intf, pm_message_t message);
73
74/* Display file_operations function prototypes */
75static int display_open(struct inode *inode, struct file *file);
76static int display_close(struct inode *inode, struct file *file);
77
78/* VFD write operation */
79static ssize_t vfd_write(struct file *file, const char *buf,
80 size_t n_bytes, loff_t *pos);
81
82/* LCD file_operations override function prototypes */
83static ssize_t lcd_write(struct file *file, const char *buf,
84 size_t n_bytes, loff_t *pos);
85
86/*** G L O B A L S ***/
87
88struct imon_context {
89 struct device *dev;
90 struct ir_dev_props *props;
91 struct ir_input_dev *ir;
92 /* Newer devices have two interfaces */
93 struct usb_device *usbdev_intf0;
94 struct usb_device *usbdev_intf1;
95
96 bool display_supported; /* not all controllers do */
97 bool display_isopen; /* display port has been opened */
98 bool rf_isassociating; /* RF remote associating */
99 bool dev_present_intf0; /* USB device presence, interface 0 */
100 bool dev_present_intf1; /* USB device presence, interface 1 */
101
102 struct mutex lock; /* to lock this object */
103 wait_queue_head_t remove_ok; /* For unexpected USB disconnects */
104
105 struct usb_endpoint_descriptor *rx_endpoint_intf0;
106 struct usb_endpoint_descriptor *rx_endpoint_intf1;
107 struct usb_endpoint_descriptor *tx_endpoint;
108 struct urb *rx_urb_intf0;
109 struct urb *rx_urb_intf1;
110 struct urb *tx_urb;
111 bool tx_control;
112 unsigned char usb_rx_buf[8];
113 unsigned char usb_tx_buf[8];
114
115 struct tx_t {
116 unsigned char data_buf[35]; /* user data buffer */
117 struct completion finished; /* wait for write to finish */
118 bool busy; /* write in progress */
119 int status; /* status of tx completion */
120 } tx;
121
122 u16 vendor; /* usb vendor ID */
123 u16 product; /* usb product ID */
124
125 struct input_dev *idev; /* input device for remote */
126 struct input_dev *touch; /* input device for touchscreen */
127
128 u32 kc; /* current input keycode */
129 u32 last_keycode; /* last reported input keycode */
130 u8 ir_protocol; /* iMON or MCE (RC6) IR protocol? */
131 u8 ir_proto_mask; /* supported IR protocol mask */
132 u8 mce_toggle_bit; /* last mce toggle bit */
133 bool release_code; /* some keys send a release code */
134
135 u8 display_type; /* store the display type */
136 bool pad_mouse; /* toggle kbd(0)/mouse(1) mode */
137
138 char name_idev[128]; /* input device name */
139 char phys_idev[64]; /* input device phys path */
140 struct timer_list itimer; /* input device timer, need for rc6 */
141
142 char name_touch[128]; /* touch screen name */
143 char phys_touch[64]; /* touch screen phys path */
144 struct timer_list ttimer; /* touch screen timer */
145 int touch_x; /* x coordinate on touchscreen */
146 int touch_y; /* y coordinate on touchscreen */
147};
148
149#define TOUCH_TIMEOUT (HZ/30)
150#define MCE_TIMEOUT_MS 200
151
152/* vfd character device file operations */
153static const struct file_operations vfd_fops = {
154 .owner = THIS_MODULE,
155 .open = &display_open,
156 .write = &vfd_write,
157 .release = &display_close
158};
159
160/* lcd character device file operations */
161static const struct file_operations lcd_fops = {
162 .owner = THIS_MODULE,
163 .open = &display_open,
164 .write = &lcd_write,
165 .release = &display_close
166};
167
168enum {
169 IMON_DISPLAY_TYPE_AUTO = 0,
170 IMON_DISPLAY_TYPE_VFD = 1,
171 IMON_DISPLAY_TYPE_LCD = 2,
172 IMON_DISPLAY_TYPE_VGA = 3,
173 IMON_DISPLAY_TYPE_NONE = 4,
174};
175
176enum {
177 IMON_IR_PROTOCOL_AUTO = 0x0,
178 IMON_IR_PROTOCOL_MCE = 0x1,
179 IMON_IR_PROTOCOL_IMON = 0x2,
180 IMON_IR_PROTOCOL_IMON_NOPAD = 0x4,
181};
182
183enum {
184 IMON_IR_PROTO_MASK_NONE = 0x0,
185 IMON_IR_PROTO_MASK_MCE = IMON_IR_PROTOCOL_MCE,
186 IMON_IR_PROTO_MASK_IMON = IMON_IR_PROTOCOL_IMON |
187 IMON_IR_PROTOCOL_IMON_NOPAD,
188};
189
190enum {
191 IMON_KEY_IMON = 0,
192 IMON_KEY_MCE = 1,
193 IMON_KEY_PANEL = 2,
194};
195
196/*
197 * USB Device ID for iMON USB Control Boards
198 *
199 * The Windows drivers contain 6 different inf files, more or less one for
200 * each new device until the 0x0034-0x0046 devices, which all use the same
201 * driver. Some of the devices in the 34-46 range haven't been definitively
202 * identified yet. Early devices have either a TriGem Computer, Inc. or a
203 * Samsung vendor ID (0x0aa8 and 0x04e8 respectively), while all later
204 * devices use the SoundGraph vendor ID (0x15c2). This driver only supports
205 * the ffdc and later devices, which do onboard decoding.
206 */
207static struct usb_device_id imon_usb_id_table[] = {
208 /*
209 * Several devices with this same device ID, all use iMON_PAD.inf
210 * SoundGraph iMON PAD (IR & VFD)
211 * SoundGraph iMON PAD (IR & LCD)
212 * SoundGraph iMON Knob (IR only)
213 */
214 { USB_DEVICE(0x15c2, 0xffdc) },
215
216 /*
217 * Newer devices, all driven by the latest iMON Windows driver, full
218 * list of device IDs extracted via 'strings Setup/data1.hdr |grep 15c2'
219 * Need user input to fill in details on unknown devices.
220 */
221 /* SoundGraph iMON OEM Touch LCD (IR & 7" VGA LCD) */
222 { USB_DEVICE(0x15c2, 0x0034) },
223 /* SoundGraph iMON OEM Touch LCD (IR & 4.3" VGA LCD) */
224 { USB_DEVICE(0x15c2, 0x0035) },
225 /* SoundGraph iMON OEM VFD (IR & VFD) */
226 { USB_DEVICE(0x15c2, 0x0036) },
227 /* device specifics unknown */
228 { USB_DEVICE(0x15c2, 0x0037) },
229 /* SoundGraph iMON OEM LCD (IR & LCD) */
230 { USB_DEVICE(0x15c2, 0x0038) },
231 /* SoundGraph iMON UltraBay (IR & LCD) */
232 { USB_DEVICE(0x15c2, 0x0039) },
233 /* device specifics unknown */
234 { USB_DEVICE(0x15c2, 0x003a) },
235 /* device specifics unknown */
236 { USB_DEVICE(0x15c2, 0x003b) },
237 /* SoundGraph iMON OEM Inside (IR only) */
238 { USB_DEVICE(0x15c2, 0x003c) },
239 /* device specifics unknown */
240 { USB_DEVICE(0x15c2, 0x003d) },
241 /* device specifics unknown */
242 { USB_DEVICE(0x15c2, 0x003e) },
243 /* device specifics unknown */
244 { USB_DEVICE(0x15c2, 0x003f) },
245 /* device specifics unknown */
246 { USB_DEVICE(0x15c2, 0x0040) },
247 /* SoundGraph iMON MINI (IR only) */
248 { USB_DEVICE(0x15c2, 0x0041) },
249 /* Antec Veris Multimedia Station EZ External (IR only) */
250 { USB_DEVICE(0x15c2, 0x0042) },
251 /* Antec Veris Multimedia Station Basic Internal (IR only) */
252 { USB_DEVICE(0x15c2, 0x0043) },
253 /* Antec Veris Multimedia Station Elite (IR & VFD) */
254 { USB_DEVICE(0x15c2, 0x0044) },
255 /* Antec Veris Multimedia Station Premiere (IR & LCD) */
256 { USB_DEVICE(0x15c2, 0x0045) },
257 /* device specifics unknown */
258 { USB_DEVICE(0x15c2, 0x0046) },
259 {}
260};
261
262/* USB Device data */
263static struct usb_driver imon_driver = {
264 .name = MOD_NAME,
265 .probe = imon_probe,
266 .disconnect = imon_disconnect,
267 .suspend = imon_suspend,
268 .resume = imon_resume,
269 .id_table = imon_usb_id_table,
270};
271
272static struct usb_class_driver imon_vfd_class = {
273 .name = DEVICE_NAME,
274 .fops = &vfd_fops,
275 .minor_base = DISPLAY_MINOR_BASE,
276};
277
278static struct usb_class_driver imon_lcd_class = {
279 .name = DEVICE_NAME,
280 .fops = &lcd_fops,
281 .minor_base = DISPLAY_MINOR_BASE,
282};
283
284/* imon receiver front panel/knob key table */
285static const struct {
286 u64 hw_code;
287 u32 keycode;
288} imon_panel_key_table[] = {
289 { 0x000000000f00ffee, KEY_PROG1 }, /* Go */
290 { 0x000000001f00ffee, KEY_AUDIO },
291 { 0x000000002000ffee, KEY_VIDEO },
292 { 0x000000002100ffee, KEY_CAMERA },
293 { 0x000000002700ffee, KEY_DVD },
294 { 0x000000002300ffee, KEY_TV },
295 { 0x000000000500ffee, KEY_PREVIOUS },
296 { 0x000000000700ffee, KEY_REWIND },
297 { 0x000000000400ffee, KEY_STOP },
298 { 0x000000003c00ffee, KEY_PLAYPAUSE },
299 { 0x000000000800ffee, KEY_FASTFORWARD },
300 { 0x000000000600ffee, KEY_NEXT },
301 { 0x000000010000ffee, KEY_RIGHT },
302 { 0x000001000000ffee, KEY_LEFT },
303 { 0x000000003d00ffee, KEY_SELECT },
304 { 0x000100000000ffee, KEY_VOLUMEUP },
305 { 0x010000000000ffee, KEY_VOLUMEDOWN },
306 { 0x000000000100ffee, KEY_MUTE },
307 /* iMON Knob values */
308 { 0x000100ffffffffee, KEY_VOLUMEUP },
309 { 0x010000ffffffffee, KEY_VOLUMEDOWN },
310 { 0x000008ffffffffee, KEY_MUTE },
311};
312
313/* to prevent races between open() and disconnect(), probing, etc */
314static DEFINE_MUTEX(driver_lock);
315
316/* Module bookkeeping bits */
317MODULE_AUTHOR(MOD_AUTHOR);
318MODULE_DESCRIPTION(MOD_DESC);
319MODULE_VERSION(MOD_VERSION);
320MODULE_LICENSE("GPL");
321MODULE_DEVICE_TABLE(usb, imon_usb_id_table);
322
323static bool debug;
324module_param(debug, bool, S_IRUGO | S_IWUSR);
325MODULE_PARM_DESC(debug, "Debug messages: 0=no, 1=yes(default: no)");
326
327/* lcd, vfd, vga or none? should be auto-detected, but can be overridden... */
328static int display_type;
329module_param(display_type, int, S_IRUGO);
330MODULE_PARM_DESC(display_type, "Type of attached display. 0=autodetect, "
331 "1=vfd, 2=lcd, 3=vga, 4=none (default: autodetect)");
332
333/* IR protocol: native iMON, Windows MCE (RC-6), or iMON w/o PAD stabilize */
334static int ir_protocol;
335module_param(ir_protocol, int, S_IRUGO | S_IWUSR);
336MODULE_PARM_DESC(ir_protocol, "Which IR protocol to use. 0=auto-detect, "
337 "1=Windows Media Center Ed. (RC-6), 2=iMON native, "
338 "4=iMON w/o PAD stabilize (default: auto-detect)");
339
340/*
341 * In certain use cases, mouse mode isn't really helpful, and could actually
342 * cause confusion, so allow disabling it when the IR device is open.
343 */
344static bool nomouse;
345module_param(nomouse, bool, S_IRUGO | S_IWUSR);
346MODULE_PARM_DESC(nomouse, "Disable mouse input device mode when IR device is "
347 "open. 0=don't disable, 1=disable. (default: don't disable)");
348
349/* threshold at which a pad push registers as an arrow key in kbd mode */
350static int pad_thresh;
351module_param(pad_thresh, int, S_IRUGO | S_IWUSR);
352MODULE_PARM_DESC(pad_thresh, "Threshold at which a pad push registers as an "
353 "arrow key in kbd mode (default: 28)");
354
355
356static void free_imon_context(struct imon_context *ictx)
357{
358 struct device *dev = ictx->dev;
359
360 usb_free_urb(ictx->tx_urb);
361 usb_free_urb(ictx->rx_urb_intf0);
362 usb_free_urb(ictx->rx_urb_intf1);
363 kfree(ictx);
364
365 dev_dbg(dev, "%s: iMON context freed\n", __func__);
366}
367
368/**
369 * Called when the Display device (e.g. /dev/lcd0)
370 * is opened by the application.
371 */
372static int display_open(struct inode *inode, struct file *file)
373{
374 struct usb_interface *interface;
375 struct imon_context *ictx = NULL;
376 int subminor;
377 int retval = 0;
378
379 /* prevent races with disconnect */
380 mutex_lock(&driver_lock);
381
382 subminor = iminor(inode);
383 interface = usb_find_interface(&imon_driver, subminor);
384 if (!interface) {
385 err("%s: could not find interface for minor %d",
386 __func__, subminor);
387 retval = -ENODEV;
388 goto exit;
389 }
390 ictx = usb_get_intfdata(interface);
391
392 if (!ictx) {
393 err("%s: no context found for minor %d", __func__, subminor);
394 retval = -ENODEV;
395 goto exit;
396 }
397
398 mutex_lock(&ictx->lock);
399
400 if (!ictx->display_supported) {
401 err("%s: display not supported by device", __func__);
402 retval = -ENODEV;
403 } else if (ictx->display_isopen) {
404 err("%s: display port is already open", __func__);
405 retval = -EBUSY;
406 } else {
407 ictx->display_isopen = 1;
408 file->private_data = ictx;
409 dev_dbg(ictx->dev, "display port opened\n");
410 }
411
412 mutex_unlock(&ictx->lock);
413
414exit:
415 mutex_unlock(&driver_lock);
416 return retval;
417}
418
419/**
420 * Called when the display device (e.g. /dev/lcd0)
421 * is closed by the application.
422 */
423static int display_close(struct inode *inode, struct file *file)
424{
425 struct imon_context *ictx = NULL;
426 int retval = 0;
427
428 ictx = (struct imon_context *)file->private_data;
429
430 if (!ictx) {
431 err("%s: no context for device", __func__);
432 return -ENODEV;
433 }
434
435 mutex_lock(&ictx->lock);
436
437 if (!ictx->display_supported) {
438 err("%s: display not supported by device", __func__);
439 retval = -ENODEV;
440 } else if (!ictx->display_isopen) {
441 err("%s: display is not open", __func__);
442 retval = -EIO;
443 } else {
444 ictx->display_isopen = 0;
445 dev_dbg(ictx->dev, "display port closed\n");
446 if (!ictx->dev_present_intf0) {
447 /*
448 * Device disconnected before close and IR port is not
449 * open. If IR port is open, context will be deleted by
450 * ir_close.
451 */
452 mutex_unlock(&ictx->lock);
453 free_imon_context(ictx);
454 return retval;
455 }
456 }
457
458 mutex_unlock(&ictx->lock);
459 return retval;
460}
461
462/**
463 * Sends a packet to the device -- this function must be called
464 * with ictx->lock held.
465 */
466static int send_packet(struct imon_context *ictx)
467{
468 unsigned int pipe;
469 unsigned long timeout;
470 int interval = 0;
471 int retval = 0;
472 struct usb_ctrlrequest *control_req = NULL;
473
474 /* Check if we need to use control or interrupt urb */
475 if (!ictx->tx_control) {
476 pipe = usb_sndintpipe(ictx->usbdev_intf0,
477 ictx->tx_endpoint->bEndpointAddress);
478 interval = ictx->tx_endpoint->bInterval;
479
480 usb_fill_int_urb(ictx->tx_urb, ictx->usbdev_intf0, pipe,
481 ictx->usb_tx_buf,
482 sizeof(ictx->usb_tx_buf),
483 usb_tx_callback, ictx, interval);
484
485 ictx->tx_urb->actual_length = 0;
486 } else {
487 /* fill request into kmalloc'ed space: */
488 control_req = kmalloc(sizeof(struct usb_ctrlrequest),
489 GFP_KERNEL);
490 if (control_req == NULL)
491 return -ENOMEM;
492
493 /* setup packet is '21 09 0200 0001 0008' */
494 control_req->bRequestType = 0x21;
495 control_req->bRequest = 0x09;
496 control_req->wValue = cpu_to_le16(0x0200);
497 control_req->wIndex = cpu_to_le16(0x0001);
498 control_req->wLength = cpu_to_le16(0x0008);
499
500 /* control pipe is endpoint 0x00 */
501 pipe = usb_sndctrlpipe(ictx->usbdev_intf0, 0);
502
503 /* build the control urb */
504 usb_fill_control_urb(ictx->tx_urb, ictx->usbdev_intf0,
505 pipe, (unsigned char *)control_req,
506 ictx->usb_tx_buf,
507 sizeof(ictx->usb_tx_buf),
508 usb_tx_callback, ictx);
509 ictx->tx_urb->actual_length = 0;
510 }
511
512 init_completion(&ictx->tx.finished);
513 ictx->tx.busy = 1;
514 smp_rmb(); /* ensure later readers know we're busy */
515
516 retval = usb_submit_urb(ictx->tx_urb, GFP_KERNEL);
517 if (retval) {
518 ictx->tx.busy = 0;
519 smp_rmb(); /* ensure later readers know we're not busy */
520 err("%s: error submitting urb(%d)", __func__, retval);
521 } else {
522 /* Wait for transmission to complete (or abort) */
523 mutex_unlock(&ictx->lock);
524 retval = wait_for_completion_interruptible(
525 &ictx->tx.finished);
526 if (retval)
527 err("%s: task interrupted", __func__);
528 mutex_lock(&ictx->lock);
529
530 retval = ictx->tx.status;
531 if (retval)
532 err("%s: packet tx failed (%d)", __func__, retval);
533 }
534
535 kfree(control_req);
536
537 /*
538 * Induce a mandatory 5ms delay before returning, as otherwise,
539 * send_packet can get called so rapidly as to overwhelm the device,
540 * particularly on faster systems and/or those with quirky usb.
541 */
542 timeout = msecs_to_jiffies(5);
543 set_current_state(TASK_UNINTERRUPTIBLE);
544 schedule_timeout(timeout);
545
546 return retval;
547}
548
549/**
550 * Sends an associate packet to the iMON 2.4G.
551 *
552 * This might not be such a good idea, since it has an id collision with
553 * some versions of the "IR & VFD" combo. The only way to determine if it
554 * is an RF version is to look at the product description string. (Which
555 * we currently do not fetch).
556 */
557static int send_associate_24g(struct imon_context *ictx)
558{
559 int retval;
560 const unsigned char packet[8] = { 0x01, 0x00, 0x00, 0x00,
561 0x00, 0x00, 0x00, 0x20 };
562
563 if (!ictx) {
564 err("%s: no context for device", __func__);
565 return -ENODEV;
566 }
567
568 if (!ictx->dev_present_intf0) {
569 err("%s: no iMON device present", __func__);
570 return -ENODEV;
571 }
572
573 memcpy(ictx->usb_tx_buf, packet, sizeof(packet));
574 retval = send_packet(ictx);
575
576 return retval;
577}
578
579/**
580 * Sends packets to setup and show clock on iMON display
581 *
582 * Arguments: year - last 2 digits of year, month - 1..12,
583 * day - 1..31, dow - day of the week (0-Sun...6-Sat),
584 * hour - 0..23, minute - 0..59, second - 0..59
585 */
586static int send_set_imon_clock(struct imon_context *ictx,
587 unsigned int year, unsigned int month,
588 unsigned int day, unsigned int dow,
589 unsigned int hour, unsigned int minute,
590 unsigned int second)
591{
592 unsigned char clock_enable_pkt[IMON_CLOCK_ENABLE_PACKETS][8];
593 int retval = 0;
594 int i;
595
596 if (!ictx) {
597 err("%s: no context for device", __func__);
598 return -ENODEV;
599 }
600
601 switch (ictx->display_type) {
602 case IMON_DISPLAY_TYPE_LCD:
603 clock_enable_pkt[0][0] = 0x80;
604 clock_enable_pkt[0][1] = year;
605 clock_enable_pkt[0][2] = month-1;
606 clock_enable_pkt[0][3] = day;
607 clock_enable_pkt[0][4] = hour;
608 clock_enable_pkt[0][5] = minute;
609 clock_enable_pkt[0][6] = second;
610
611 clock_enable_pkt[1][0] = 0x80;
612 clock_enable_pkt[1][1] = 0;
613 clock_enable_pkt[1][2] = 0;
614 clock_enable_pkt[1][3] = 0;
615 clock_enable_pkt[1][4] = 0;
616 clock_enable_pkt[1][5] = 0;
617 clock_enable_pkt[1][6] = 0;
618
619 if (ictx->product == 0xffdc) {
620 clock_enable_pkt[0][7] = 0x50;
621 clock_enable_pkt[1][7] = 0x51;
622 } else {
623 clock_enable_pkt[0][7] = 0x88;
624 clock_enable_pkt[1][7] = 0x8a;
625 }
626
627 break;
628
629 case IMON_DISPLAY_TYPE_VFD:
630 clock_enable_pkt[0][0] = year;
631 clock_enable_pkt[0][1] = month-1;
632 clock_enable_pkt[0][2] = day;
633 clock_enable_pkt[0][3] = dow;
634 clock_enable_pkt[0][4] = hour;
635 clock_enable_pkt[0][5] = minute;
636 clock_enable_pkt[0][6] = second;
637 clock_enable_pkt[0][7] = 0x40;
638
639 clock_enable_pkt[1][0] = 0;
640 clock_enable_pkt[1][1] = 0;
641 clock_enable_pkt[1][2] = 1;
642 clock_enable_pkt[1][3] = 0;
643 clock_enable_pkt[1][4] = 0;
644 clock_enable_pkt[1][5] = 0;
645 clock_enable_pkt[1][6] = 0;
646 clock_enable_pkt[1][7] = 0x42;
647
648 break;
649
650 default:
651 return -ENODEV;
652 }
653
654 for (i = 0; i < IMON_CLOCK_ENABLE_PACKETS; i++) {
655 memcpy(ictx->usb_tx_buf, clock_enable_pkt[i], 8);
656 retval = send_packet(ictx);
657 if (retval) {
658 err("%s: send_packet failed for packet %d",
659 __func__, i);
660 break;
661 }
662 }
663
664 return retval;
665}
666
667/**
668 * These are the sysfs functions to handle the association on the iMON 2.4G LT.
669 */
670static ssize_t show_associate_remote(struct device *d,
671 struct device_attribute *attr,
672 char *buf)
673{
674 struct imon_context *ictx = dev_get_drvdata(d);
675
676 if (!ictx)
677 return -ENODEV;
678
679 mutex_lock(&ictx->lock);
680 if (ictx->rf_isassociating)
681 strcpy(buf, "associating\n");
682 else
683 strcpy(buf, "closed\n");
684
685 dev_info(d, "Visit http://www.lirc.org/html/imon-24g.html for "
686 "instructions on how to associate your iMON 2.4G DT/LT "
687 "remote\n");
688 mutex_unlock(&ictx->lock);
689 return strlen(buf);
690}
691
692static ssize_t store_associate_remote(struct device *d,
693 struct device_attribute *attr,
694 const char *buf, size_t count)
695{
696 struct imon_context *ictx;
697
698 ictx = dev_get_drvdata(d);
699
700 if (!ictx)
701 return -ENODEV;
702
703 mutex_lock(&ictx->lock);
704 ictx->rf_isassociating = 1;
705 send_associate_24g(ictx);
706 mutex_unlock(&ictx->lock);
707
708 return count;
709}
710
711/**
712 * sysfs functions to control internal imon clock
713 */
714static ssize_t show_imon_clock(struct device *d,
715 struct device_attribute *attr, char *buf)
716{
717 struct imon_context *ictx = dev_get_drvdata(d);
718 size_t len;
719
720 if (!ictx)
721 return -ENODEV;
722
723 mutex_lock(&ictx->lock);
724
725 if (!ictx->display_supported) {
726 len = snprintf(buf, PAGE_SIZE, "Not supported.");
727 } else {
728 len = snprintf(buf, PAGE_SIZE,
729 "To set the clock on your iMON display:\n"
730 "# date \"+%%y %%m %%d %%w %%H %%M %%S\" > imon_clock\n"
731 "%s", ictx->display_isopen ?
732 "\nNOTE: imon device must be closed\n" : "");
733 }
734
735 mutex_unlock(&ictx->lock);
736
737 return len;
738}
739
740static ssize_t store_imon_clock(struct device *d,
741 struct device_attribute *attr,
742 const char *buf, size_t count)
743{
744 struct imon_context *ictx = dev_get_drvdata(d);
745 ssize_t retval;
746 unsigned int year, month, day, dow, hour, minute, second;
747
748 if (!ictx)
749 return -ENODEV;
750
751 mutex_lock(&ictx->lock);
752
753 if (!ictx->display_supported) {
754 retval = -ENODEV;
755 goto exit;
756 } else if (ictx->display_isopen) {
757 retval = -EBUSY;
758 goto exit;
759 }
760
761 if (sscanf(buf, "%u %u %u %u %u %u %u", &year, &month, &day, &dow,
762 &hour, &minute, &second) != 7) {
763 retval = -EINVAL;
764 goto exit;
765 }
766
767 if ((month < 1 || month > 12) ||
768 (day < 1 || day > 31) || (dow > 6) ||
769 (hour > 23) || (minute > 59) || (second > 59)) {
770 retval = -EINVAL;
771 goto exit;
772 }
773
774 retval = send_set_imon_clock(ictx, year, month, day, dow,
775 hour, minute, second);
776 if (retval)
777 goto exit;
778
779 retval = count;
780exit:
781 mutex_unlock(&ictx->lock);
782
783 return retval;
784}
785
786
787static DEVICE_ATTR(imon_clock, S_IWUSR | S_IRUGO, show_imon_clock,
788 store_imon_clock);
789
790static DEVICE_ATTR(associate_remote, S_IWUSR | S_IRUGO, show_associate_remote,
791 store_associate_remote);
792
793static struct attribute *imon_display_sysfs_entries[] = {
794 &dev_attr_imon_clock.attr,
795 NULL
796};
797
798static struct attribute_group imon_display_attribute_group = {
799 .attrs = imon_display_sysfs_entries
800};
801
802static struct attribute *imon_rf_sysfs_entries[] = {
803 &dev_attr_associate_remote.attr,
804 NULL
805};
806
807static struct attribute_group imon_rf_attribute_group = {
808 .attrs = imon_rf_sysfs_entries
809};
810
811/**
812 * Writes data to the VFD. The iMON VFD is 2x16 characters
813 * and requires data in 5 consecutive USB interrupt packets,
814 * each packet but the last carrying 7 bytes.
815 *
816 * I don't know if the VFD board supports features such as
817 * scrolling, clearing rows, blanking, etc. so at
818 * the caller must provide a full screen of data. If fewer
819 * than 32 bytes are provided spaces will be appended to
820 * generate a full screen.
821 */
822static ssize_t vfd_write(struct file *file, const char *buf,
823 size_t n_bytes, loff_t *pos)
824{
825 int i;
826 int offset;
827 int seq;
828 int retval = 0;
829 struct imon_context *ictx;
830 const unsigned char vfd_packet6[] = {
831 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF };
832
833 ictx = (struct imon_context *)file->private_data;
834 if (!ictx) {
835 err("%s: no context for device", __func__);
836 return -ENODEV;
837 }
838
839 mutex_lock(&ictx->lock);
840
841 if (!ictx->dev_present_intf0) {
842 err("%s: no iMON device present", __func__);
843 retval = -ENODEV;
844 goto exit;
845 }
846
847 if (n_bytes <= 0 || n_bytes > 32) {
848 err("%s: invalid payload size", __func__);
849 retval = -EINVAL;
850 goto exit;
851 }
852
853 if (copy_from_user(ictx->tx.data_buf, buf, n_bytes)) {
854 retval = -EFAULT;
855 goto exit;
856 }
857
858 /* Pad with spaces */
859 for (i = n_bytes; i < 32; ++i)
860 ictx->tx.data_buf[i] = ' ';
861
862 for (i = 32; i < 35; ++i)
863 ictx->tx.data_buf[i] = 0xFF;
864
865 offset = 0;
866 seq = 0;
867
868 do {
869 memcpy(ictx->usb_tx_buf, ictx->tx.data_buf + offset, 7);
870 ictx->usb_tx_buf[7] = (unsigned char) seq;
871
872 retval = send_packet(ictx);
873 if (retval) {
874 err("%s: send packet failed for packet #%d",
875 __func__, seq/2);
876 goto exit;
877 } else {
878 seq += 2;
879 offset += 7;
880 }
881
882 } while (offset < 35);
883
884 /* Send packet #6 */
885 memcpy(ictx->usb_tx_buf, &vfd_packet6, sizeof(vfd_packet6));
886 ictx->usb_tx_buf[7] = (unsigned char) seq;
887 retval = send_packet(ictx);
888 if (retval)
889 err("%s: send packet failed for packet #%d",
890 __func__, seq / 2);
891
892exit:
893 mutex_unlock(&ictx->lock);
894
895 return (!retval) ? n_bytes : retval;
896}
897
898/**
899 * Writes data to the LCD. The iMON OEM LCD screen expects 8-byte
900 * packets. We accept data as 16 hexadecimal digits, followed by a
901 * newline (to make it easy to drive the device from a command-line
902 * -- even though the actual binary data is a bit complicated).
903 *
904 * The device itself is not a "traditional" text-mode display. It's
905 * actually a 16x96 pixel bitmap display. That means if you want to
906 * display text, you've got to have your own "font" and translate the
907 * text into bitmaps for display. This is really flexible (you can
908 * display whatever diacritics you need, and so on), but it's also
909 * a lot more complicated than most LCDs...
910 */
911static ssize_t lcd_write(struct file *file, const char *buf,
912 size_t n_bytes, loff_t *pos)
913{
914 int retval = 0;
915 struct imon_context *ictx;
916
917 ictx = (struct imon_context *)file->private_data;
918 if (!ictx) {
919 err("%s: no context for device", __func__);
920 return -ENODEV;
921 }
922
923 mutex_lock(&ictx->lock);
924
925 if (!ictx->display_supported) {
926 err("%s: no iMON display present", __func__);
927 retval = -ENODEV;
928 goto exit;
929 }
930
931 if (n_bytes != 8) {
932 err("%s: invalid payload size: %d (expecting 8)",
933 __func__, (int) n_bytes);
934 retval = -EINVAL;
935 goto exit;
936 }
937
938 if (copy_from_user(ictx->usb_tx_buf, buf, 8)) {
939 retval = -EFAULT;
940 goto exit;
941 }
942
943 retval = send_packet(ictx);
944 if (retval) {
945 err("%s: send packet failed!", __func__);
946 goto exit;
947 } else {
948 dev_dbg(ictx->dev, "%s: write %d bytes to LCD\n",
949 __func__, (int) n_bytes);
950 }
951exit:
952 mutex_unlock(&ictx->lock);
953 return (!retval) ? n_bytes : retval;
954}
955
956/**
957 * Callback function for USB core API: transmit data
958 */
959static void usb_tx_callback(struct urb *urb)
960{
961 struct imon_context *ictx;
962
963 if (!urb)
964 return;
965 ictx = (struct imon_context *)urb->context;
966 if (!ictx)
967 return;
968
969 ictx->tx.status = urb->status;
970
971 /* notify waiters that write has finished */
972 ictx->tx.busy = 0;
973 smp_rmb(); /* ensure later readers know we're not busy */
974 complete(&ictx->tx.finished);
975}
976
977/**
978 * mce/rc6 keypresses have no distinct release code, use timer
979 */
980static void imon_mce_timeout(unsigned long data)
981{
982 struct imon_context *ictx = (struct imon_context *)data;
983
984 input_report_key(ictx->idev, ictx->last_keycode, 0);
985 input_sync(ictx->idev);
986}
987
988/**
989 * report touchscreen input
990 */
991static void imon_touch_display_timeout(unsigned long data)
992{
993 struct imon_context *ictx = (struct imon_context *)data;
994
995 if (!ictx->display_type == IMON_DISPLAY_TYPE_VGA)
996 return;
997
998 input_report_abs(ictx->touch, ABS_X, ictx->touch_x);
999 input_report_abs(ictx->touch, ABS_Y, ictx->touch_y);
1000 input_report_key(ictx->touch, BTN_TOUCH, 0x00);
1001 input_sync(ictx->touch);
1002}
1003
1004/**
1005 * iMON IR receivers support two different signal sets -- those used by
1006 * the iMON remotes, and those used by the Windows MCE remotes (which is
1007 * really just RC-6), but only one or the other at a time, as the signals
1008 * are decoded onboard the receiver.
1009 */
1010static void imon_set_ir_protocol(struct imon_context *ictx)
1011{
1012 int retval;
1013 struct device *dev = ictx->dev;
1014 unsigned char ir_proto_packet[] = {
1015 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 };
1016
1017 if (ir_protocol && !(ir_protocol & ictx->ir_proto_mask))
1018 dev_warn(dev, "Looks like you're trying to use an IR protocol "
1019 "this device does not support\n");
1020
1021 switch (ir_protocol) {
1022 case IMON_IR_PROTOCOL_AUTO:
1023 if (ictx->product == 0xffdc) {
1024 if (ictx->ir_proto_mask & IMON_IR_PROTO_MASK_MCE) {
1025 ir_proto_packet[0] = 0x01;
1026 ictx->ir_protocol = IMON_IR_PROTOCOL_MCE;
1027 ictx->pad_mouse = 0;
1028 init_timer(&ictx->itimer);
1029 ictx->itimer.data = (unsigned long)ictx;
1030 ictx->itimer.function = imon_mce_timeout;
1031 } else {
1032 ictx->ir_protocol = IMON_IR_PROTOCOL_IMON;
1033 ictx->pad_mouse = 1;
1034 }
1035 }
1036 break;
1037 case IMON_IR_PROTOCOL_MCE:
1038 dev_dbg(dev, "Configuring IR receiver for MCE protocol\n");
1039 ir_proto_packet[0] = 0x01;
1040 ictx->ir_protocol = IMON_IR_PROTOCOL_MCE;
1041 ictx->pad_mouse = 0;
1042 init_timer(&ictx->itimer);
1043 ictx->itimer.data = (unsigned long)ictx;
1044 ictx->itimer.function = imon_mce_timeout;
1045 break;
1046 case IMON_IR_PROTOCOL_IMON:
1047 dev_dbg(dev, "Configuring IR receiver for iMON protocol\n");
1048 /* ir_proto_packet[0] = 0x00; // already the default */
1049 ictx->ir_protocol = IMON_IR_PROTOCOL_IMON;
1050 ictx->pad_mouse = 1;
1051 break;
1052 case IMON_IR_PROTOCOL_IMON_NOPAD:
1053 dev_dbg(dev, "Configuring IR receiver for iMON protocol "
1054 "without PAD stabilize function enabled\n");
1055 /* ir_proto_packet[0] = 0x00; // already the default */
1056 ictx->ir_protocol = IMON_IR_PROTOCOL_IMON_NOPAD;
1057 ictx->pad_mouse = 0;
1058 break;
1059 default:
1060 dev_info(dev, "%s: unknown IR protocol specified, will "
1061 "just default to iMON protocol\n", __func__);
1062 ictx->ir_protocol = IMON_IR_PROTOCOL_IMON;
1063 ictx->pad_mouse = 1;
1064 break;
1065 }
1066
1067 memcpy(ictx->usb_tx_buf, &ir_proto_packet, sizeof(ir_proto_packet));
1068
1069 retval = send_packet(ictx);
1070 if (retval) {
1071 dev_info(dev, "%s: failed to set IR protocol, falling back "
1072 "to standard iMON protocol mode\n", __func__);
1073 ir_protocol = IMON_IR_PROTOCOL_IMON;
1074 ictx->ir_protocol = IMON_IR_PROTOCOL_IMON;
1075 }
1076}
1077
1078static inline int tv2int(const struct timeval *a, const struct timeval *b)
1079{
1080 int usecs = 0;
1081 int sec = 0;
1082
1083 if (b->tv_usec > a->tv_usec) {
1084 usecs = 1000000;
1085 sec--;
1086 }
1087
1088 usecs += a->tv_usec - b->tv_usec;
1089
1090 sec += a->tv_sec - b->tv_sec;
1091 sec *= 1000;
1092 usecs /= 1000;
1093 sec += usecs;
1094
1095 if (sec < 0)
1096 sec = 1000;
1097
1098 return sec;
1099}
1100
1101/**
1102 * The directional pad behaves a bit differently, depending on whether this is
1103 * one of the older ffdc devices or a newer device. Newer devices appear to
1104 * have a higher resolution matrix for more precise mouse movement, but it
1105 * makes things overly sensitive in keyboard mode, so we do some interesting
1106 * contortions to make it less touchy. Older devices run through the same
1107 * routine with shorter timeout and a smaller threshold.
1108 */
1109static int stabilize(int a, int b, u16 timeout, u16 threshold)
1110{
1111 struct timeval ct;
1112 static struct timeval prev_time = {0, 0};
1113 static struct timeval hit_time = {0, 0};
1114 static int x, y, prev_result, hits;
1115 int result = 0;
1116 int msec, msec_hit;
1117
1118 do_gettimeofday(&ct);
1119 msec = tv2int(&ct, &prev_time);
1120 msec_hit = tv2int(&ct, &hit_time);
1121
1122 if (msec > 100) {
1123 x = 0;
1124 y = 0;
1125 hits = 0;
1126 }
1127
1128 x += a;
1129 y += b;
1130
1131 prev_time = ct;
1132
1133 if (abs(x) > threshold || abs(y) > threshold) {
1134 if (abs(y) > abs(x))
1135 result = (y > 0) ? 0x7F : 0x80;
1136 else
1137 result = (x > 0) ? 0x7F00 : 0x8000;
1138
1139 x = 0;
1140 y = 0;
1141
1142 if (result == prev_result) {
1143 hits++;
1144
1145 if (hits > 3) {
1146 switch (result) {
1147 case 0x7F:
1148 y = 17 * threshold / 30;
1149 break;
1150 case 0x80:
1151 y -= 17 * threshold / 30;
1152 break;
1153 case 0x7F00:
1154 x = 17 * threshold / 30;
1155 break;
1156 case 0x8000:
1157 x -= 17 * threshold / 30;
1158 break;
1159 }
1160 }
1161
1162 if (hits == 2 && msec_hit < timeout) {
1163 result = 0;
1164 hits = 1;
1165 }
1166 } else {
1167 prev_result = result;
1168 hits = 1;
1169 hit_time = ct;
1170 }
1171 }
1172
1173 return result;
1174}
1175
1176static u32 imon_remote_key_lookup(struct imon_context *ictx, u32 hw_code)
1177{
1178 u32 scancode = be32_to_cpu(hw_code);
1179 u32 keycode;
1180 u32 release;
1181 bool is_release_code = false;
1182
1183 /* Look for the initial press of a button */
1184 keycode = ir_g_keycode_from_table(ictx->idev, scancode);
1185
1186 /* Look for the release of a button */
1187 if (keycode == KEY_RESERVED) {
1188 release = scancode & ~0x4000;
1189 keycode = ir_g_keycode_from_table(ictx->idev, release);
1190 if (keycode != KEY_RESERVED)
1191 is_release_code = true;
1192 }
1193
1194 ictx->release_code = is_release_code;
1195
1196 return keycode;
1197}
1198
1199static u32 imon_mce_key_lookup(struct imon_context *ictx, u32 hw_code)
1200{
1201 u32 scancode = be32_to_cpu(hw_code);
1202 u32 keycode;
1203
1204#define MCE_KEY_MASK 0x7000
1205#define MCE_TOGGLE_BIT 0x8000
1206
1207 /*
1208 * On some receivers, mce keys decode to 0x8000f04xx and 0x8000f84xx
1209 * (the toggle bit flipping between alternating key presses), while
1210 * on other receivers, we see 0x8000f74xx and 0x8000ff4xx. To keep
1211 * the table trim, we always or in the bits to look up 0x8000ff4xx,
1212 * but we can't or them into all codes, as some keys are decoded in
1213 * a different way w/o the same use of the toggle bit...
1214 */
1215 if ((scancode >> 24) & 0x80)
1216 scancode = scancode | MCE_KEY_MASK | MCE_TOGGLE_BIT;
1217
1218 keycode = ir_g_keycode_from_table(ictx->idev, scancode);
1219
1220 return keycode;
1221}
1222
1223static u32 imon_panel_key_lookup(u64 hw_code)
1224{
1225 int i;
1226 u64 code = be64_to_cpu(hw_code);
1227 u32 keycode;
1228
1229 for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++)
1230 if (imon_panel_key_table[i].hw_code == (code | 0xffee))
1231 break;
1232
1233 keycode = imon_panel_key_table[i % IMON_KEY_RELEASE_OFFSET].keycode;
1234
1235 return keycode;
1236}
1237
1238static bool imon_mouse_event(struct imon_context *ictx,
1239 unsigned char *buf, int len)
1240{
1241 char rel_x = 0x00, rel_y = 0x00;
1242 u8 right_shift = 1;
1243 bool mouse_input = 1;
1244 int dir = 0;
1245
1246 /* newer iMON device PAD or mouse button */
1247 if (ictx->product != 0xffdc && (buf[0] & 0x01) && len == 5) {
1248 rel_x = buf[2];
1249 rel_y = buf[3];
1250 right_shift = 1;
1251 /* 0xffdc iMON PAD or mouse button input */
1252 } else if (ictx->product == 0xffdc && (buf[0] & 0x40) &&
1253 !((buf[1] & 0x01) || ((buf[1] >> 2) & 0x01))) {
1254 rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 |
1255 (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6;
1256 if (buf[0] & 0x02)
1257 rel_x |= ~0x0f;
1258 rel_x = rel_x + rel_x / 2;
1259 rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 |
1260 (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6;
1261 if (buf[0] & 0x01)
1262 rel_y |= ~0x0f;
1263 rel_y = rel_y + rel_y / 2;
1264 right_shift = 2;
1265 /* some ffdc devices decode mouse buttons differently... */
1266 } else if (ictx->product == 0xffdc && (buf[0] == 0x68)) {
1267 right_shift = 2;
1268 /* ch+/- buttons, which we use for an emulated scroll wheel */
1269 } else if (ictx->kc == KEY_CHANNELUP && (buf[2] & 0x40) != 0x40) {
1270 dir = 1;
1271 } else if (ictx->kc == KEY_CHANNELDOWN && (buf[2] & 0x40) != 0x40) {
1272 dir = -1;
1273 } else
1274 mouse_input = 0;
1275
1276 if (mouse_input) {
1277 dev_dbg(ictx->dev, "sending mouse data via input subsystem\n");
1278
1279 if (dir) {
1280 input_report_rel(ictx->idev, REL_WHEEL, dir);
1281 } else if (rel_x || rel_y) {
1282 input_report_rel(ictx->idev, REL_X, rel_x);
1283 input_report_rel(ictx->idev, REL_Y, rel_y);
1284 } else {
1285 input_report_key(ictx->idev, BTN_LEFT, buf[1] & 0x1);
1286 input_report_key(ictx->idev, BTN_RIGHT,
1287 buf[1] >> right_shift & 0x1);
1288 }
1289 input_sync(ictx->idev);
1290 ictx->last_keycode = ictx->kc;
1291 }
1292
1293 return mouse_input;
1294}
1295
1296static void imon_touch_event(struct imon_context *ictx, unsigned char *buf)
1297{
1298 mod_timer(&ictx->ttimer, jiffies + TOUCH_TIMEOUT);
1299 ictx->touch_x = (buf[0] << 4) | (buf[1] >> 4);
1300 ictx->touch_y = 0xfff - ((buf[2] << 4) | (buf[1] & 0xf));
1301 input_report_abs(ictx->touch, ABS_X, ictx->touch_x);
1302 input_report_abs(ictx->touch, ABS_Y, ictx->touch_y);
1303 input_report_key(ictx->touch, BTN_TOUCH, 0x01);
1304 input_sync(ictx->touch);
1305}
1306
1307static void imon_pad_to_keys(struct imon_context *ictx, unsigned char *buf)
1308{
1309 int dir = 0;
1310 char rel_x = 0x00, rel_y = 0x00;
1311 u16 timeout, threshold;
1312 u64 temp_key;
1313 u32 remote_key;
1314
1315 /*
1316 * The imon directional pad functions more like a touchpad. Bytes 3 & 4
1317 * contain a position coordinate (x,y), with each component ranging
1318 * from -14 to 14. We want to down-sample this to only 4 discrete values
1319 * for up/down/left/right arrow keys. Also, when you get too close to
1320 * diagonals, it has a tendancy to jump back and forth, so lets try to
1321 * ignore when they get too close.
1322 */
1323 if (ictx->product != 0xffdc) {
1324 /* first, pad to 8 bytes so it conforms with everything else */
1325 buf[5] = buf[6] = buf[7] = 0;
1326 timeout = 500; /* in msecs */
1327 /* (2*threshold) x (2*threshold) square */
1328 threshold = pad_thresh ? pad_thresh : 28;
1329 rel_x = buf[2];
1330 rel_y = buf[3];
1331
1332 if (ictx->ir_protocol == IMON_IR_PROTOCOL_IMON) {
1333 if ((buf[1] == 0) && ((rel_x != 0) || (rel_y != 0))) {
1334 dir = stabilize((int)rel_x, (int)rel_y,
1335 timeout, threshold);
1336 if (!dir) {
1337 ictx->kc = KEY_UNKNOWN;
1338 return;
1339 }
1340 buf[2] = dir & 0xFF;
1341 buf[3] = (dir >> 8) & 0xFF;
1342 memcpy(&temp_key, buf, sizeof(temp_key));
1343 remote_key = (u32) (le64_to_cpu(temp_key)
1344 & 0xffffffff);
1345 ictx->kc = imon_remote_key_lookup(ictx,
1346 remote_key);
1347 }
1348 } else {
1349 if (abs(rel_y) > abs(rel_x)) {
1350 buf[2] = (rel_y > 0) ? 0x7F : 0x80;
1351 buf[3] = 0;
1352 ictx->kc = (rel_y > 0) ? KEY_DOWN : KEY_UP;
1353 } else {
1354 buf[2] = 0;
1355 buf[3] = (rel_x > 0) ? 0x7F : 0x80;
1356 ictx->kc = (rel_x > 0) ? KEY_RIGHT : KEY_LEFT;
1357 }
1358 }
1359
1360 /*
1361 * Handle on-board decoded pad events for e.g. older VFD/iMON-Pad
1362 * device (15c2:ffdc). The remote generates various codes from
1363 * 0x68nnnnB7 to 0x6AnnnnB7, the left mouse button generates
1364 * 0x688301b7 and the right one 0x688481b7. All other keys generate
1365 * 0x2nnnnnnn. Position coordinate is encoded in buf[1] and buf[2] with
1366 * reversed endianess. Extract direction from buffer, rotate endianess,
1367 * adjust sign and feed the values into stabilize(). The resulting codes
1368 * will be 0x01008000, 0x01007F00, which match the newer devices.
1369 */
1370 } else {
1371 timeout = 10; /* in msecs */
1372 /* (2*threshold) x (2*threshold) square */
1373 threshold = pad_thresh ? pad_thresh : 15;
1374
1375 /* buf[1] is x */
1376 rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 |
1377 (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6;
1378 if (buf[0] & 0x02)
1379 rel_x |= ~0x10+1;
1380 /* buf[2] is y */
1381 rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 |
1382 (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6;
1383 if (buf[0] & 0x01)
1384 rel_y |= ~0x10+1;
1385
1386 buf[0] = 0x01;
1387 buf[1] = buf[4] = buf[5] = buf[6] = buf[7] = 0;
1388
1389 if (ictx->ir_protocol == IMON_IR_PROTOCOL_IMON) {
1390 dir = stabilize((int)rel_x, (int)rel_y,
1391 timeout, threshold);
1392 if (!dir) {
1393 ictx->kc = KEY_UNKNOWN;
1394 return;
1395 }
1396 buf[2] = dir & 0xFF;
1397 buf[3] = (dir >> 8) & 0xFF;
1398 memcpy(&temp_key, buf, sizeof(temp_key));
1399 remote_key = (u32) (le64_to_cpu(temp_key) & 0xffffffff);
1400 ictx->kc = imon_remote_key_lookup(ictx, remote_key);
1401 } else {
1402 if (abs(rel_y) > abs(rel_x)) {
1403 buf[2] = (rel_y > 0) ? 0x7F : 0x80;
1404 buf[3] = 0;
1405 ictx->kc = (rel_y > 0) ? KEY_DOWN : KEY_UP;
1406 } else {
1407 buf[2] = 0;
1408 buf[3] = (rel_x > 0) ? 0x7F : 0x80;
1409 ictx->kc = (rel_x > 0) ? KEY_RIGHT : KEY_LEFT;
1410 }
1411 }
1412 }
1413}
1414
1415static int imon_parse_press_type(struct imon_context *ictx,
1416 unsigned char *buf, u8 ktype)
1417{
1418 int press_type = 0;
1419
1420 /* key release of 0x02XXXXXX key */
1421 if (ictx->kc == KEY_RESERVED && buf[0] == 0x02 && buf[3] == 0x00)
1422 ictx->kc = ictx->last_keycode;
1423
1424 /* mouse button release on (some) 0xffdc devices */
1425 else if (ictx->kc == KEY_RESERVED && buf[0] == 0x68 && buf[1] == 0x82 &&
1426 buf[2] == 0x81 && buf[3] == 0xb7)
1427 ictx->kc = ictx->last_keycode;
1428
1429 /* mouse button release on (some other) 0xffdc devices */
1430 else if (ictx->kc == KEY_RESERVED && buf[0] == 0x01 && buf[1] == 0x00 &&
1431 buf[2] == 0x81 && buf[3] == 0xb7)
1432 ictx->kc = ictx->last_keycode;
1433
1434 /* mce-specific button handling */
1435 else if (ktype == IMON_KEY_MCE) {
1436 /* initial press */
1437 if (ictx->kc != ictx->last_keycode
1438 || buf[2] != ictx->mce_toggle_bit) {
1439 ictx->last_keycode = ictx->kc;
1440 ictx->mce_toggle_bit = buf[2];
1441 press_type = 1;
1442 mod_timer(&ictx->itimer,
1443 jiffies + msecs_to_jiffies(MCE_TIMEOUT_MS));
1444 /* repeat */
1445 } else {
1446 press_type = 2;
1447 mod_timer(&ictx->itimer,
1448 jiffies + msecs_to_jiffies(MCE_TIMEOUT_MS));
1449 }
1450
1451 /* incoherent or irrelevant data */
1452 } else if (ictx->kc == KEY_RESERVED)
1453 press_type = -EINVAL;
1454
1455 /* key release of 0xXXXXXXb7 key */
1456 else if (ictx->release_code)
1457 press_type = 0;
1458
1459 /* this is a button press */
1460 else
1461 press_type = 1;
1462
1463 return press_type;
1464}
1465
1466/**
1467 * Process the incoming packet
1468 */
1469static void imon_incoming_packet(struct imon_context *ictx,
1470 struct urb *urb, int intf)
1471{
1472 int len = urb->actual_length;
1473 unsigned char *buf = urb->transfer_buffer;
1474 struct device *dev = ictx->dev;
1475 u32 kc;
1476 bool norelease = 0;
1477 int i;
1478 u64 temp_key;
1479 u64 panel_key = 0;
1480 u32 remote_key = 0;
1481 struct input_dev *idev = NULL;
1482 int press_type = 0;
1483 int msec;
1484 struct timeval t;
1485 static struct timeval prev_time = { 0, 0 };
1486 u8 ktype = IMON_KEY_IMON;
1487
1488 idev = ictx->idev;
1489
1490 /* filter out junk data on the older 0xffdc imon devices */
1491 if ((buf[0] == 0xff) && (buf[7] == 0xff))
1492 return;
1493
1494 /* Figure out what key was pressed */
1495 memcpy(&temp_key, buf, sizeof(temp_key));
1496 if (len == 8 && buf[7] == 0xee) {
1497 ktype = IMON_KEY_PANEL;
1498 panel_key = le64_to_cpu(temp_key);
1499 kc = imon_panel_key_lookup(panel_key);
1500 } else {
1501 remote_key = (u32) (le64_to_cpu(temp_key) & 0xffffffff);
1502 if (ictx->ir_protocol == IMON_IR_PROTOCOL_MCE) {
1503 if (buf[0] == 0x80)
1504 ktype = IMON_KEY_MCE;
1505 kc = imon_mce_key_lookup(ictx, remote_key);
1506 } else
1507 kc = imon_remote_key_lookup(ictx, remote_key);
1508 }
1509
1510 /* keyboard/mouse mode toggle button */
1511 if (kc == KEY_KEYBOARD && !ictx->release_code) {
1512 ictx->last_keycode = kc;
1513 if (!nomouse) {
1514 ictx->pad_mouse = ~(ictx->pad_mouse) & 0x1;
1515 dev_dbg(dev, "toggling to %s mode\n",
1516 ictx->pad_mouse ? "mouse" : "keyboard");
1517 return;
1518 } else {
1519 ictx->pad_mouse = 0;
1520 dev_dbg(dev, "mouse mode disabled, passing key value\n");
1521 }
1522 }
1523
1524 ictx->kc = kc;
1525
1526 /* send touchscreen events through input subsystem if touchpad data */
1527 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA && len == 8 &&
1528 buf[7] == 0x86) {
1529 imon_touch_event(ictx, buf);
1530
1531 /* look for mouse events with pad in mouse mode */
1532 } else if (ictx->pad_mouse) {
1533 if (imon_mouse_event(ictx, buf, len))
1534 return;
1535 }
1536
1537 /* Now for some special handling to convert pad input to arrow keys */
1538 if (((len == 5) && (buf[0] == 0x01) && (buf[4] == 0x00)) ||
1539 ((len == 8) && (buf[0] & 0x40) &&
1540 !(buf[1] & 0x1 || buf[1] >> 2 & 0x1))) {
1541 len = 8;
1542 imon_pad_to_keys(ictx, buf);
1543 norelease = 1;
1544 }
1545
1546 if (debug) {
1547 printk(KERN_INFO "intf%d decoded packet: ", intf);
1548 for (i = 0; i < len; ++i)
1549 printk("%02x ", buf[i]);
1550 printk("\n");
1551 }
1552
1553 press_type = imon_parse_press_type(ictx, buf, ktype);
1554 if (press_type < 0)
1555 goto not_input_data;
1556
1557 if (ictx->kc == KEY_UNKNOWN)
1558 goto unknown_key;
1559
1560 /* KEY_MUTE repeats from MCE and knob need to be suppressed */
1561 if ((ictx->kc == KEY_MUTE && ictx->kc == ictx->last_keycode)
1562 && (buf[7] == 0xee || ktype == IMON_KEY_MCE)) {
1563 do_gettimeofday(&t);
1564 msec = tv2int(&t, &prev_time);
1565 prev_time = t;
1566 if (msec < 200)
1567 return;
1568 }
1569
1570 input_report_key(idev, ictx->kc, press_type);
1571 input_sync(idev);
1572
1573 /* panel keys and some remote keys don't generate a release */
1574 if (panel_key || norelease) {
1575 input_report_key(idev, ictx->kc, 0);
1576 input_sync(idev);
1577 }
1578
1579 ictx->last_keycode = ictx->kc;
1580
1581 return;
1582
1583unknown_key:
1584 dev_info(dev, "%s: unknown keypress, code 0x%llx\n", __func__,
1585 (panel_key ? be64_to_cpu(panel_key) :
1586 be32_to_cpu(remote_key)));
1587 return;
1588
1589not_input_data:
1590 if (len != 8) {
1591 dev_warn(dev, "imon %s: invalid incoming packet "
1592 "size (len = %d, intf%d)\n", __func__, len, intf);
1593 return;
1594 }
1595
1596 /* iMON 2.4G associate frame */
1597 if (buf[0] == 0x00 &&
1598 buf[2] == 0xFF && /* REFID */
1599 buf[3] == 0xFF &&
1600 buf[4] == 0xFF &&
1601 buf[5] == 0xFF && /* iMON 2.4G */
1602 ((buf[6] == 0x4E && buf[7] == 0xDF) || /* LT */
1603 (buf[6] == 0x5E && buf[7] == 0xDF))) { /* DT */
1604 dev_warn(dev, "%s: remote associated refid=%02X\n",
1605 __func__, buf[1]);
1606 ictx->rf_isassociating = 0;
1607 }
1608}
1609
1610/**
1611 * Callback function for USB core API: receive data
1612 */
1613static void usb_rx_callback_intf0(struct urb *urb)
1614{
1615 struct imon_context *ictx;
1616 int intfnum = 0;
1617
1618 if (!urb)
1619 return;
1620
1621 ictx = (struct imon_context *)urb->context;
1622 if (!ictx)
1623 return;
1624
1625 switch (urb->status) {
1626 case -ENOENT: /* usbcore unlink successful! */
1627 return;
1628
1629 case -ESHUTDOWN: /* transport endpoint was shut down */
1630 break;
1631
1632 case 0:
1633 imon_incoming_packet(ictx, urb, intfnum);
1634 break;
1635
1636 default:
1637 dev_warn(ictx->dev, "imon %s: status(%d): ignored\n",
1638 __func__, urb->status);
1639 break;
1640 }
1641
1642 usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC);
1643}
1644
1645static void usb_rx_callback_intf1(struct urb *urb)
1646{
1647 struct imon_context *ictx;
1648 int intfnum = 1;
1649
1650 if (!urb)
1651 return;
1652
1653 ictx = (struct imon_context *)urb->context;
1654 if (!ictx)
1655 return;
1656
1657 switch (urb->status) {
1658 case -ENOENT: /* usbcore unlink successful! */
1659 return;
1660
1661 case -ESHUTDOWN: /* transport endpoint was shut down */
1662 break;
1663
1664 case 0:
1665 imon_incoming_packet(ictx, urb, intfnum);
1666 break;
1667
1668 default:
1669 dev_warn(ictx->dev, "imon %s: status(%d): ignored\n",
1670 __func__, urb->status);
1671 break;
1672 }
1673
1674 usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC);
1675}
1676
1677static struct input_dev *imon_init_idev(struct imon_context *ictx)
1678{
1679 struct input_dev *idev;
1680 struct ir_dev_props *props;
1681 struct ir_input_dev *ir;
1682 int ret, i;
1683 char *ir_codes = NULL;
1684
1685 if (ir_protocol == IMON_IR_PROTOCOL_MCE)
1686 ir_codes = RC_MAP_IMON_MCE;
1687 else
1688 ir_codes = RC_MAP_IMON_PAD;
1689
1690 idev = input_allocate_device();
1691 if (!idev) {
1692 dev_err(ictx->dev, "remote input dev allocation failed\n");
1693 goto idev_alloc_failed;
1694 }
1695
1696 props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL);
1697 if (!props) {
1698 dev_err(ictx->dev, "remote ir dev props allocation failed\n");
1699 goto props_alloc_failed;
1700 }
1701
1702 ir = kzalloc(sizeof(struct ir_input_dev), GFP_KERNEL);
1703 if (!props) {
1704 dev_err(ictx->dev, "remote ir input dev allocation failed\n");
1705 goto ir_dev_alloc_failed;
1706 }
1707
1708 snprintf(ictx->name_idev, sizeof(ictx->name_idev),
1709 "iMON Remote (%04x:%04x)", ictx->vendor, ictx->product);
1710 idev->name = ictx->name_idev;
1711
1712 usb_make_path(ictx->usbdev_intf0, ictx->phys_idev,
1713 sizeof(ictx->phys_idev));
1714 strlcat(ictx->phys_idev, "/input0", sizeof(ictx->phys_idev));
1715 idev->phys = ictx->phys_idev;
1716
1717 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
1718
1719 idev->keybit[BIT_WORD(BTN_MOUSE)] =
1720 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
1721 idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) |
1722 BIT_MASK(REL_WHEEL);
1723
1724 /* panel and/or knob code support */
1725 for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) {
1726 u32 kc = imon_panel_key_table[i].keycode;
1727 __set_bit(kc, idev->keybit);
1728 }
1729
1730 props->driver_type = RC_DRIVER_SCANCODE;
1731 props->allowed_protos = IR_TYPE_UNKNOWN;
1732
1733 ictx->ir = ir;
1734 memcpy(&ir->dev, ictx->dev, sizeof(struct device));
1735
1736 usb_to_input_id(ictx->usbdev_intf0, &idev->id);
1737 idev->dev.parent = ictx->dev;
1738
1739 input_set_drvdata(idev, ir);
1740
1741 ret = ir_input_register(idev, ir_codes, props, MOD_NAME);
1742 if (ret < 0) {
1743 dev_err(ictx->dev, "remote input dev register failed\n");
1744 goto idev_register_failed;
1745 }
1746
1747 return idev;
1748
1749idev_register_failed:
1750 kfree(ir);
1751ir_dev_alloc_failed:
1752 kfree(props);
1753props_alloc_failed:
1754 input_free_device(idev);
1755idev_alloc_failed:
1756
1757 return NULL;
1758}
1759
1760static struct input_dev *imon_init_touch(struct imon_context *ictx)
1761{
1762 struct input_dev *touch;
1763 int ret;
1764
1765 touch = input_allocate_device();
1766 if (!touch) {
1767 dev_err(ictx->dev, "touchscreen input dev allocation failed\n");
1768 goto touch_alloc_failed;
1769 }
1770
1771 snprintf(ictx->name_touch, sizeof(ictx->name_touch),
1772 "iMON USB Touchscreen (%04x:%04x)",
1773 ictx->vendor, ictx->product);
1774 touch->name = ictx->name_touch;
1775
1776 usb_make_path(ictx->usbdev_intf1, ictx->phys_touch,
1777 sizeof(ictx->phys_touch));
1778 strlcat(ictx->phys_touch, "/input1", sizeof(ictx->phys_touch));
1779 touch->phys = ictx->phys_touch;
1780
1781 touch->evbit[0] =
1782 BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1783 touch->keybit[BIT_WORD(BTN_TOUCH)] =
1784 BIT_MASK(BTN_TOUCH);
1785 input_set_abs_params(touch, ABS_X,
1786 0x00, 0xfff, 0, 0);
1787 input_set_abs_params(touch, ABS_Y,
1788 0x00, 0xfff, 0, 0);
1789
1790 input_set_drvdata(touch, ictx);
1791
1792 usb_to_input_id(ictx->usbdev_intf1, &touch->id);
1793 touch->dev.parent = ictx->dev;
1794 ret = input_register_device(touch);
1795 if (ret < 0) {
1796 dev_info(ictx->dev, "touchscreen input dev register failed\n");
1797 goto touch_register_failed;
1798 }
1799
1800 return touch;
1801
1802touch_register_failed:
1803 input_free_device(ictx->touch);
1804 mutex_unlock(&ictx->lock);
1805
1806touch_alloc_failed:
1807 return NULL;
1808}
1809
1810static bool imon_find_endpoints(struct imon_context *ictx,
1811 struct usb_host_interface *iface_desc)
1812{
1813 struct usb_endpoint_descriptor *ep;
1814 struct usb_endpoint_descriptor *rx_endpoint = NULL;
1815 struct usb_endpoint_descriptor *tx_endpoint = NULL;
1816 int ifnum = iface_desc->desc.bInterfaceNumber;
1817 int num_endpts = iface_desc->desc.bNumEndpoints;
1818 int i, ep_dir, ep_type;
1819 bool ir_ep_found = 0;
1820 bool display_ep_found = 0;
1821 bool tx_control = 0;
1822
1823 /*
1824 * Scan the endpoint list and set:
1825 * first input endpoint = IR endpoint
1826 * first output endpoint = display endpoint
1827 */
1828 for (i = 0; i < num_endpts && !(ir_ep_found && display_ep_found); ++i) {
1829 ep = &iface_desc->endpoint[i].desc;
1830 ep_dir = ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK;
1831 ep_type = ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
1832
1833 if (!ir_ep_found && ep_dir == USB_DIR_IN &&
1834 ep_type == USB_ENDPOINT_XFER_INT) {
1835
1836 rx_endpoint = ep;
1837 ir_ep_found = 1;
1838 dev_dbg(ictx->dev, "%s: found IR endpoint\n", __func__);
1839
1840 } else if (!display_ep_found && ep_dir == USB_DIR_OUT &&
1841 ep_type == USB_ENDPOINT_XFER_INT) {
1842 tx_endpoint = ep;
1843 display_ep_found = 1;
1844 dev_dbg(ictx->dev, "%s: found display endpoint\n", __func__);
1845 }
1846 }
1847
1848 if (ifnum == 0) {
1849 ictx->rx_endpoint_intf0 = rx_endpoint;
1850 /*
1851 * tx is used to send characters to lcd/vfd, associate RF
1852 * remotes, set IR protocol, and maybe more...
1853 */
1854 ictx->tx_endpoint = tx_endpoint;
1855 } else {
1856 ictx->rx_endpoint_intf1 = rx_endpoint;
1857 }
1858
1859 /*
1860 * If we didn't find a display endpoint, this is probably one of the
1861 * newer iMON devices that use control urb instead of interrupt
1862 */
1863 if (!display_ep_found) {
1864 tx_control = 1;
1865 display_ep_found = 1;
1866 dev_dbg(ictx->dev, "%s: device uses control endpoint, not "
1867 "interface OUT endpoint\n", __func__);
1868 }
1869
1870 /*
1871 * Some iMON receivers have no display. Unfortunately, it seems
1872 * that SoundGraph recycles device IDs between devices both with
1873 * and without... :\
1874 */
1875 if (ictx->display_type == IMON_DISPLAY_TYPE_NONE) {
1876 display_ep_found = 0;
1877 dev_dbg(ictx->dev, "%s: device has no display\n", __func__);
1878 }
1879
1880 /*
1881 * iMON Touch devices have a VGA touchscreen, but no "display", as
1882 * that refers to e.g. /dev/lcd0 (a character device LCD or VFD).
1883 */
1884 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
1885 display_ep_found = 0;
1886 dev_dbg(ictx->dev, "%s: iMON Touch device found\n", __func__);
1887 }
1888
1889 /* Input endpoint is mandatory */
1890 if (!ir_ep_found)
1891 err("%s: no valid input (IR) endpoint found.", __func__);
1892
1893 ictx->tx_control = tx_control;
1894
1895 if (display_ep_found)
1896 ictx->display_supported = true;
1897
1898 return ir_ep_found;
1899
1900}
1901
1902static struct imon_context *imon_init_intf0(struct usb_interface *intf)
1903{
1904 struct imon_context *ictx;
1905 struct urb *rx_urb;
1906 struct urb *tx_urb;
1907 struct device *dev = &intf->dev;
1908 struct usb_host_interface *iface_desc;
1909 int ret;
1910
1911 ictx = kzalloc(sizeof(struct imon_context), GFP_KERNEL);
1912 if (!ictx) {
1913 dev_err(dev, "%s: kzalloc failed for context", __func__);
1914 goto exit;
1915 }
1916 rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1917 if (!rx_urb) {
1918 dev_err(dev, "%s: usb_alloc_urb failed for IR urb", __func__);
1919 goto rx_urb_alloc_failed;
1920 }
1921 tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1922 if (!tx_urb) {
1923 dev_err(dev, "%s: usb_alloc_urb failed for display urb",
1924 __func__);
1925 goto tx_urb_alloc_failed;
1926 }
1927
1928 mutex_init(&ictx->lock);
1929
1930 mutex_lock(&ictx->lock);
1931
1932 ictx->dev = dev;
1933 ictx->usbdev_intf0 = usb_get_dev(interface_to_usbdev(intf));
1934 ictx->dev_present_intf0 = 1;
1935 ictx->rx_urb_intf0 = rx_urb;
1936 ictx->tx_urb = tx_urb;
1937
1938 ictx->vendor = le16_to_cpu(ictx->usbdev_intf0->descriptor.idVendor);
1939 ictx->product = le16_to_cpu(ictx->usbdev_intf0->descriptor.idProduct);
1940
1941 iface_desc = intf->cur_altsetting;
1942 if (!imon_find_endpoints(ictx, iface_desc))
1943 goto find_endpoint_failed;
1944
1945 ictx->idev = imon_init_idev(ictx);
1946 if (!ictx->idev) {
1947 dev_err(dev, "%s: input device setup failed\n", __func__);
1948 goto idev_setup_failed;
1949 }
1950
1951 usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0,
1952 usb_rcvintpipe(ictx->usbdev_intf0,
1953 ictx->rx_endpoint_intf0->bEndpointAddress),
1954 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
1955 usb_rx_callback_intf0, ictx,
1956 ictx->rx_endpoint_intf0->bInterval);
1957
1958 ret = usb_submit_urb(ictx->rx_urb_intf0, GFP_KERNEL);
1959 if (ret) {
1960 err("%s: usb_submit_urb failed for intf0 (%d)",
1961 __func__, ret);
1962 goto urb_submit_failed;
1963 }
1964
1965 return ictx;
1966
1967urb_submit_failed:
1968 input_unregister_device(ictx->idev);
1969 input_free_device(ictx->idev);
1970idev_setup_failed:
1971find_endpoint_failed:
1972 mutex_unlock(&ictx->lock);
1973 usb_free_urb(tx_urb);
1974tx_urb_alloc_failed:
1975 usb_free_urb(rx_urb);
1976rx_urb_alloc_failed:
1977 kfree(ictx);
1978exit:
1979 dev_err(dev, "unable to initialize intf0, err %d\n", ret);
1980
1981 return NULL;
1982}
1983
1984static struct imon_context *imon_init_intf1(struct usb_interface *intf,
1985 struct imon_context *ictx)
1986{
1987 struct urb *rx_urb;
1988 struct usb_host_interface *iface_desc;
1989 int ret;
1990
1991 rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1992 if (!rx_urb) {
1993 err("%s: usb_alloc_urb failed for IR urb", __func__);
1994 ret = -ENOMEM;
1995 goto rx_urb_alloc_failed;
1996 }
1997
1998 mutex_lock(&ictx->lock);
1999
2000 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
2001 init_timer(&ictx->ttimer);
2002 ictx->ttimer.data = (unsigned long)ictx;
2003 ictx->ttimer.function = imon_touch_display_timeout;
2004 }
2005
2006 ictx->usbdev_intf1 = usb_get_dev(interface_to_usbdev(intf));
2007 ictx->dev_present_intf1 = 1;
2008 ictx->rx_urb_intf1 = rx_urb;
2009
2010 iface_desc = intf->cur_altsetting;
2011 if (!imon_find_endpoints(ictx, iface_desc))
2012 goto find_endpoint_failed;
2013
2014 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
2015 ictx->touch = imon_init_touch(ictx);
2016 if (!ictx->touch)
2017 goto touch_setup_failed;
2018 } else
2019 ictx->touch = NULL;
2020
2021 usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1,
2022 usb_rcvintpipe(ictx->usbdev_intf1,
2023 ictx->rx_endpoint_intf1->bEndpointAddress),
2024 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2025 usb_rx_callback_intf1, ictx,
2026 ictx->rx_endpoint_intf1->bInterval);
2027
2028 ret = usb_submit_urb(ictx->rx_urb_intf1, GFP_KERNEL);
2029
2030 if (ret) {
2031 err("%s: usb_submit_urb failed for intf1 (%d)",
2032 __func__, ret);
2033 goto urb_submit_failed;
2034 }
2035
2036 return ictx;
2037
2038urb_submit_failed:
2039 if (ictx->touch) {
2040 input_unregister_device(ictx->touch);
2041 input_free_device(ictx->touch);
2042 }
2043touch_setup_failed:
2044find_endpoint_failed:
2045 mutex_unlock(&ictx->lock);
2046 usb_free_urb(rx_urb);
2047rx_urb_alloc_failed:
2048 dev_err(ictx->dev, "unable to initialize intf0, err %d\n", ret);
2049
2050 return NULL;
2051}
2052
2053/*
2054 * The 0x15c2:0xffdc device ID was used for umpteen different imon
2055 * devices, and all of them constantly spew interrupts, even when there
2056 * is no actual data to report. However, byte 6 of this buffer looks like
2057 * its unique across device variants, so we're trying to key off that to
2058 * figure out which display type (if any) and what IR protocol the device
2059 * actually supports.
2060 */
2061static void imon_get_ffdc_type(struct imon_context *ictx)
2062{
2063 u8 ffdc_cfg_byte = ictx->usb_rx_buf[6];
2064 u8 detected_display_type = IMON_DISPLAY_TYPE_NONE;
2065 u8 ir_proto_mask = IMON_IR_PROTO_MASK_IMON;
2066
2067 switch (ffdc_cfg_byte) {
2068 /* iMON Knob, no display, iMON IR + vol knob */
2069 case 0x21:
2070 dev_info(ictx->dev, "0xffdc iMON Knob, iMON IR");
2071 ictx->display_supported = false;
2072 break;
2073 /* iMON VFD, no IR (does have vol knob tho) */
2074 case 0x35:
2075 dev_info(ictx->dev, "0xffdc iMON VFD + knob, no IR");
2076 detected_display_type = IMON_DISPLAY_TYPE_VFD;
2077 ir_proto_mask = IMON_IR_PROTO_MASK_NONE;
2078 break;
2079 /* iMON VFD, iMON IR */
2080 case 0x24:
2081 case 0x85:
2082 dev_info(ictx->dev, "0xffdc iMON VFD, iMON IR");
2083 detected_display_type = IMON_DISPLAY_TYPE_VFD;
2084 break;
2085 /* iMON LCD, MCE IR */
2086 case 0x9f:
2087 dev_info(ictx->dev, "0xffdc iMON LCD, MCE IR");
2088 detected_display_type = IMON_DISPLAY_TYPE_LCD;
2089 ir_proto_mask = IMON_IR_PROTO_MASK_MCE;
2090 break;
2091 default:
2092 dev_info(ictx->dev, "Unknown 0xffdc device, "
2093 "defaulting to VFD and iMON IR");
2094 detected_display_type = IMON_DISPLAY_TYPE_VFD;
2095 break;
2096 }
2097
2098 printk(" (id 0x%02x)\n", ffdc_cfg_byte);
2099
2100 ictx->display_type = detected_display_type;
2101 ictx->ir_proto_mask = ir_proto_mask;
2102}
2103
2104static void imon_set_display_type(struct imon_context *ictx,
2105 struct usb_interface *intf)
2106{
2107 u8 configured_display_type = IMON_DISPLAY_TYPE_VFD;
2108
2109 /*
2110 * Try to auto-detect the type of display if the user hasn't set
2111 * it by hand via the display_type modparam. Default is VFD.
2112 */
2113
2114 if (display_type == IMON_DISPLAY_TYPE_AUTO) {
2115 switch (ictx->product) {
2116 case 0xffdc:
2117 /* set in imon_get_ffdc_type() */
2118 configured_display_type = ictx->display_type;
2119 break;
2120 case 0x0034:
2121 case 0x0035:
2122 configured_display_type = IMON_DISPLAY_TYPE_VGA;
2123 break;
2124 case 0x0038:
2125 case 0x0039:
2126 case 0x0045:
2127 configured_display_type = IMON_DISPLAY_TYPE_LCD;
2128 break;
2129 case 0x003c:
2130 case 0x0041:
2131 case 0x0042:
2132 case 0x0043:
2133 configured_display_type = IMON_DISPLAY_TYPE_NONE;
2134 ictx->display_supported = false;
2135 break;
2136 case 0x0036:
2137 case 0x0044:
2138 default:
2139 configured_display_type = IMON_DISPLAY_TYPE_VFD;
2140 break;
2141 }
2142 } else {
2143 configured_display_type = display_type;
2144 if (display_type == IMON_DISPLAY_TYPE_NONE)
2145 ictx->display_supported = false;
2146 else
2147 ictx->display_supported = true;
2148 dev_info(ictx->dev, "%s: overriding display type to %d via "
2149 "modparam\n", __func__, display_type);
2150 }
2151
2152 ictx->display_type = configured_display_type;
2153}
2154
2155static void imon_init_display(struct imon_context *ictx,
2156 struct usb_interface *intf)
2157{
2158 int ret;
2159
2160 dev_dbg(ictx->dev, "Registering iMON display with sysfs\n");
2161
2162 /* set up sysfs entry for built-in clock */
2163 ret = sysfs_create_group(&intf->dev.kobj,
2164 &imon_display_attribute_group);
2165 if (ret)
2166 dev_err(ictx->dev, "Could not create display sysfs "
2167 "entries(%d)", ret);
2168
2169 if (ictx->display_type == IMON_DISPLAY_TYPE_LCD)
2170 ret = usb_register_dev(intf, &imon_lcd_class);
2171 else
2172 ret = usb_register_dev(intf, &imon_vfd_class);
2173 if (ret)
2174 /* Not a fatal error, so ignore */
2175 dev_info(ictx->dev, "could not get a minor number for "
2176 "display\n");
2177
2178}
2179
2180/**
2181 * Callback function for USB core API: Probe
2182 */
2183static int __devinit imon_probe(struct usb_interface *interface,
2184 const struct usb_device_id *id)
2185{
2186 struct usb_device *usbdev = NULL;
2187 struct usb_host_interface *iface_desc = NULL;
2188 struct usb_interface *first_if;
2189 struct device *dev = &interface->dev;
2190 int ifnum, code_length, sysfs_err;
2191 int ret = 0;
2192 struct imon_context *ictx = NULL;
2193 struct imon_context *first_if_ctx = NULL;
2194 u16 vendor, product;
2195 const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00,
2196 0x00, 0x00, 0x00, 0x88 };
2197
2198 code_length = BUF_CHUNK_SIZE * 8;
2199
2200 usbdev = usb_get_dev(interface_to_usbdev(interface));
2201 iface_desc = interface->cur_altsetting;
2202 ifnum = iface_desc->desc.bInterfaceNumber;
2203 vendor = le16_to_cpu(usbdev->descriptor.idVendor);
2204 product = le16_to_cpu(usbdev->descriptor.idProduct);
2205
2206 dev_dbg(dev, "%s: found iMON device (%04x:%04x, intf%d)\n",
2207 __func__, vendor, product, ifnum);
2208
2209 /* prevent races probing devices w/multiple interfaces */
2210 mutex_lock(&driver_lock);
2211
2212 first_if = usb_ifnum_to_if(usbdev, 0);
2213 first_if_ctx = (struct imon_context *)usb_get_intfdata(first_if);
2214
2215 if (ifnum == 0) {
2216 ictx = imon_init_intf0(interface);
2217 if (!ictx) {
2218 err("%s: failed to initialize context!\n", __func__);
2219 ret = -ENODEV;
2220 goto fail;
2221 }
2222
2223 if (product == 0xffdc) {
2224 /* RF products *also* use 0xffdc... sigh... */
2225 sysfs_err = sysfs_create_group(&interface->dev.kobj,
2226 &imon_rf_attribute_group);
2227 if (sysfs_err)
2228 err("%s: Could not create RF sysfs entries(%d)",
2229 __func__, sysfs_err);
2230 }
2231
2232 } else {
2233 /* this is the secondary interface on the device */
2234 ictx = imon_init_intf1(interface, first_if_ctx);
2235 if (!ictx) {
2236 err("%s: failed to attach to context!\n", __func__);
2237 ret = -ENODEV;
2238 goto fail;
2239 }
2240
2241 }
2242
2243 usb_set_intfdata(interface, ictx);
2244
2245 if (ifnum == 0) {
2246 /* Enable front-panel buttons and/or knobs */
2247 memcpy(ictx->usb_tx_buf, &fp_packet, sizeof(fp_packet));
2248 ret = send_packet(ictx);
2249 /* Not fatal, but warn about it */
2250 if (ret)
2251 dev_info(dev, "failed to enable panel buttons "
2252 "and/or knobs\n");
2253
2254 if (product == 0xffdc)
2255 imon_get_ffdc_type(ictx);
2256 else
2257 ictx->ir_proto_mask = IMON_IR_PROTO_MASK_MCE |
2258 IMON_IR_PROTO_MASK_IMON;
2259
2260 imon_set_display_type(ictx, interface);
2261
2262 if (ictx->display_supported)
2263 imon_init_display(ictx, interface);
2264 }
2265
2266 /* set IR protocol/remote type */
2267 imon_set_ir_protocol(ictx);
2268
2269 dev_info(dev, "iMON device (%04x:%04x, intf%d) on "
2270 "usb<%d:%d> initialized\n", vendor, product, ifnum,
2271 usbdev->bus->busnum, usbdev->devnum);
2272
2273 mutex_unlock(&ictx->lock);
2274 mutex_unlock(&driver_lock);
2275
2276 return 0;
2277
2278fail:
2279 mutex_unlock(&driver_lock);
2280 dev_err(dev, "unable to register, err %d\n", ret);
2281
2282 return ret;
2283}
2284
2285/**
2286 * Callback function for USB core API: disconnect
2287 */
2288static void __devexit imon_disconnect(struct usb_interface *interface)
2289{
2290 struct imon_context *ictx;
2291 struct device *dev;
2292 int ifnum;
2293
2294 /* prevent races with multi-interface device probing and display_open */
2295 mutex_lock(&driver_lock);
2296
2297 ictx = usb_get_intfdata(interface);
2298 dev = ictx->dev;
2299 ifnum = interface->cur_altsetting->desc.bInterfaceNumber;
2300
2301 mutex_lock(&ictx->lock);
2302
2303 /*
2304 * sysfs_remove_group is safe to call even if sysfs_create_group
2305 * hasn't been called
2306 */
2307 sysfs_remove_group(&interface->dev.kobj,
2308 &imon_display_attribute_group);
2309 sysfs_remove_group(&interface->dev.kobj,
2310 &imon_rf_attribute_group);
2311
2312 usb_set_intfdata(interface, NULL);
2313
2314 /* Abort ongoing write */
2315 if (ictx->tx.busy) {
2316 usb_kill_urb(ictx->tx_urb);
2317 complete_all(&ictx->tx.finished);
2318 }
2319
2320 if (ifnum == 0) {
2321 ictx->dev_present_intf0 = 0;
2322 usb_kill_urb(ictx->rx_urb_intf0);
2323 input_unregister_device(ictx->idev);
2324 if (ictx->display_supported) {
2325 if (ictx->display_type == IMON_DISPLAY_TYPE_LCD)
2326 usb_deregister_dev(interface, &imon_lcd_class);
2327 else
2328 usb_deregister_dev(interface, &imon_vfd_class);
2329 }
2330 } else {
2331 ictx->dev_present_intf1 = 0;
2332 usb_kill_urb(ictx->rx_urb_intf1);
2333 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA)
2334 input_unregister_device(ictx->touch);
2335 }
2336
2337 if (!ictx->dev_present_intf0 && !ictx->dev_present_intf1) {
2338 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA)
2339 del_timer_sync(&ictx->ttimer);
2340 mutex_unlock(&ictx->lock);
2341 if (!ictx->display_isopen)
2342 free_imon_context(ictx);
2343 } else {
2344 if (ictx->ir_protocol == IMON_IR_PROTOCOL_MCE)
2345 del_timer_sync(&ictx->itimer);
2346 mutex_unlock(&ictx->lock);
2347 }
2348
2349 mutex_unlock(&driver_lock);
2350
2351 dev_dbg(dev, "%s: iMON device (intf%d) disconnected\n",
2352 __func__, ifnum);
2353}
2354
2355static int imon_suspend(struct usb_interface *intf, pm_message_t message)
2356{
2357 struct imon_context *ictx = usb_get_intfdata(intf);
2358 int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
2359
2360 if (ifnum == 0)
2361 usb_kill_urb(ictx->rx_urb_intf0);
2362 else
2363 usb_kill_urb(ictx->rx_urb_intf1);
2364
2365 return 0;
2366}
2367
2368static int imon_resume(struct usb_interface *intf)
2369{
2370 int rc = 0;
2371 struct imon_context *ictx = usb_get_intfdata(intf);
2372 int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
2373
2374 if (ifnum == 0) {
2375 usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0,
2376 usb_rcvintpipe(ictx->usbdev_intf0,
2377 ictx->rx_endpoint_intf0->bEndpointAddress),
2378 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2379 usb_rx_callback_intf0, ictx,
2380 ictx->rx_endpoint_intf0->bInterval);
2381
2382 rc = usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC);
2383
2384 } else {
2385 usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1,
2386 usb_rcvintpipe(ictx->usbdev_intf1,
2387 ictx->rx_endpoint_intf1->bEndpointAddress),
2388 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2389 usb_rx_callback_intf1, ictx,
2390 ictx->rx_endpoint_intf1->bInterval);
2391
2392 rc = usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC);
2393 }
2394
2395 return rc;
2396}
2397
2398static int __init imon_init(void)
2399{
2400 int rc;
2401
2402 rc = usb_register(&imon_driver);
2403 if (rc) {
2404 err("%s: usb register failed(%d)", __func__, rc);
2405 rc = -ENODEV;
2406 }
2407
2408 return rc;
2409}
2410
2411static void __exit imon_exit(void)
2412{
2413 usb_deregister(&imon_driver);
2414}
2415
2416module_init(imon_init);
2417module_exit(imon_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-11 01:35:18 -0500