2 * ati_remote2 - ATI/Philips USB RF remote driver
4 * Copyright (C) 2005 Ville Syrjala <syrjala@sci.fi>
5 * Copyright (C) 2007 Peter Stokes <linux@dadeos.freeserve.co.uk>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2
9 * as published by the Free Software Foundation.
12 #include <linux/usb/input.h>
14 #define DRIVER_DESC "ATI/Philips USB RF remote driver"
15 #define DRIVER_VERSION "0.2"
17 MODULE_DESCRIPTION(DRIVER_DESC);
18 MODULE_VERSION(DRIVER_VERSION);
19 MODULE_AUTHOR("Ville Syrjala <syrjala@sci.fi>");
20 MODULE_LICENSE("GPL");
23 * ATI Remote Wonder II Channel Configuration
25 * The remote control can by assigned one of sixteen "channels" in order to facilitate
26 * the use of multiple remote controls within range of each other.
27 * A remote's "channel" may be altered by pressing and holding the "PC" button for
28 * approximately 3 seconds, after which the button will slowly flash the count of the
29 * currently configured "channel", using the numeric keypad enter a number between 1 and
30 * 16 and then the "PC" button again, the button will slowly flash the count of the
31 * newly configured "channel".
34 static unsigned int channel_mask = 0xFFFF;
35 module_param(channel_mask, uint, 0644);
36 MODULE_PARM_DESC(channel_mask, "Bitmask of channels to accept <15:Channel16>...<1:Channel2><0:Channel1>");
38 static unsigned int mode_mask = 0x1F;
39 module_param(mode_mask, uint, 0644);
40 MODULE_PARM_DESC(mode_mask, "Bitmask of modes to accept <4:PC><3:AUX4><2:AUX3><1:AUX2><0:AUX1>");
42 static struct usb_device_id ati_remote2_id_table[] = {
43 { USB_DEVICE(0x0471, 0x0602) }, /* ATI Remote Wonder II */
46 MODULE_DEVICE_TABLE(usb, ati_remote2_id_table);
51 } ati_remote2_key_table[] = {
64 { 0x10, KEY_VOLUMEUP },
65 { 0x11, KEY_VOLUMEDOWN },
66 { 0x20, KEY_CHANNELUP },
67 { 0x21, KEY_CHANNELDOWN },
68 { 0x28, KEY_FORWARD },
93 { 0xbe, KEY_QUESTION },
97 { (0x00 << 8) | 0x3f, KEY_PROG1 },
98 { (0x01 << 8) | 0x3f, KEY_PROG2 },
99 { (0x02 << 8) | 0x3f, KEY_PROG3 },
100 { (0x03 << 8) | 0x3f, KEY_PROG4 },
101 { (0x04 << 8) | 0x3f, KEY_PC },
106 struct input_dev *idev;
107 struct usb_device *udev;
109 struct usb_interface *intf[2];
110 struct usb_endpoint_descriptor *ep[2];
113 dma_addr_t buf_dma[2];
115 unsigned long jiffies;
122 static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id);
123 static void ati_remote2_disconnect(struct usb_interface *interface);
125 static struct usb_driver ati_remote2_driver = {
126 .name = "ati_remote2",
127 .probe = ati_remote2_probe,
128 .disconnect = ati_remote2_disconnect,
129 .id_table = ati_remote2_id_table,
132 static int ati_remote2_open(struct input_dev *idev)
134 struct ati_remote2 *ar2 = input_get_drvdata(idev);
137 r = usb_submit_urb(ar2->urb[0], GFP_KERNEL);
139 dev_err(&ar2->intf[0]->dev,
140 "%s: usb_submit_urb() = %d\n", __func__, r);
143 r = usb_submit_urb(ar2->urb[1], GFP_KERNEL);
145 usb_kill_urb(ar2->urb[0]);
146 dev_err(&ar2->intf[1]->dev,
147 "%s: usb_submit_urb() = %d\n", __func__, r);
154 static void ati_remote2_close(struct input_dev *idev)
156 struct ati_remote2 *ar2 = input_get_drvdata(idev);
158 usb_kill_urb(ar2->urb[0]);
159 usb_kill_urb(ar2->urb[1]);
162 static void ati_remote2_input_mouse(struct ati_remote2 *ar2)
164 struct input_dev *idev = ar2->idev;
165 u8 *data = ar2->buf[0];
168 channel = data[0] >> 4;
170 if (!((1 << channel) & channel_mask))
173 mode = data[0] & 0x0F;
176 dev_err(&ar2->intf[0]->dev,
177 "Unknown mode byte (%02x %02x %02x %02x)\n",
178 data[3], data[2], data[1], data[0]);
182 if (!((1 << mode) & mode_mask))
185 input_event(idev, EV_REL, REL_X, (s8) data[1]);
186 input_event(idev, EV_REL, REL_Y, (s8) data[2]);
190 static int ati_remote2_lookup(unsigned int hw_code)
194 for (i = 0; ati_remote2_key_table[i].key_code != KEY_RESERVED; i++)
195 if (ati_remote2_key_table[i].hw_code == hw_code)
201 static void ati_remote2_input_key(struct ati_remote2 *ar2)
203 struct input_dev *idev = ar2->idev;
204 u8 *data = ar2->buf[1];
205 int channel, mode, hw_code, index;
207 channel = data[0] >> 4;
209 if (!((1 << channel) & channel_mask))
212 mode = data[0] & 0x0F;
215 dev_err(&ar2->intf[1]->dev,
216 "Unknown mode byte (%02x %02x %02x %02x)\n",
217 data[3], data[2], data[1], data[0]);
223 * Mode keys (AUX1-AUX4, PC) all generate the same code byte.
224 * Use the mode byte to figure out which one was pressed.
226 if (hw_code == 0x3f) {
228 * For some incomprehensible reason the mouse pad generates
229 * events which look identical to the events from the last
230 * pressed mode key. Naturally we don't want to generate key
231 * events for the mouse pad so we filter out any subsequent
232 * events from the same mode key.
234 if (ar2->mode == mode)
240 hw_code |= mode << 8;
243 if (!((1 << mode) & mode_mask))
246 index = ati_remote2_lookup(hw_code);
248 dev_err(&ar2->intf[1]->dev,
249 "Unknown code byte (%02x %02x %02x %02x)\n",
250 data[3], data[2], data[1], data[0]);
255 case 0: /* release */
258 ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_DELAY]);
262 /* No repeat for mouse buttons. */
263 if (ati_remote2_key_table[index].key_code == BTN_LEFT ||
264 ati_remote2_key_table[index].key_code == BTN_RIGHT)
267 if (!time_after_eq(jiffies, ar2->jiffies))
270 ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_PERIOD]);
273 dev_err(&ar2->intf[1]->dev,
274 "Unknown state byte (%02x %02x %02x %02x)\n",
275 data[3], data[2], data[1], data[0]);
279 input_event(idev, EV_KEY, ati_remote2_key_table[index].key_code, data[1]);
283 static void ati_remote2_complete_mouse(struct urb *urb)
285 struct ati_remote2 *ar2 = urb->context;
288 switch (urb->status) {
290 ati_remote2_input_mouse(ar2);
296 dev_dbg(&ar2->intf[0]->dev,
297 "%s(): urb status = %d\n", __func__, urb->status);
300 dev_err(&ar2->intf[0]->dev,
301 "%s(): urb status = %d\n", __func__, urb->status);
304 r = usb_submit_urb(urb, GFP_ATOMIC);
306 dev_err(&ar2->intf[0]->dev,
307 "%s(): usb_submit_urb() = %d\n", __func__, r);
310 static void ati_remote2_complete_key(struct urb *urb)
312 struct ati_remote2 *ar2 = urb->context;
315 switch (urb->status) {
317 ati_remote2_input_key(ar2);
323 dev_dbg(&ar2->intf[1]->dev,
324 "%s(): urb status = %d\n", __func__, urb->status);
327 dev_err(&ar2->intf[1]->dev,
328 "%s(): urb status = %d\n", __func__, urb->status);
331 r = usb_submit_urb(urb, GFP_ATOMIC);
333 dev_err(&ar2->intf[1]->dev,
334 "%s(): usb_submit_urb() = %d\n", __func__, r);
337 static int ati_remote2_input_init(struct ati_remote2 *ar2)
339 struct input_dev *idev;
342 idev = input_allocate_device();
347 input_set_drvdata(idev, ar2);
349 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL);
350 idev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
352 idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
353 for (i = 0; ati_remote2_key_table[i].key_code != KEY_RESERVED; i++)
354 set_bit(ati_remote2_key_table[i].key_code, idev->keybit);
356 idev->rep[REP_DELAY] = 250;
357 idev->rep[REP_PERIOD] = 33;
359 idev->open = ati_remote2_open;
360 idev->close = ati_remote2_close;
362 idev->name = ar2->name;
363 idev->phys = ar2->phys;
365 usb_to_input_id(ar2->udev, &idev->id);
366 idev->dev.parent = &ar2->udev->dev;
368 retval = input_register_device(idev);
370 input_free_device(idev);
375 static int ati_remote2_urb_init(struct ati_remote2 *ar2)
377 struct usb_device *udev = ar2->udev;
380 for (i = 0; i < 2; i++) {
381 ar2->buf[i] = usb_buffer_alloc(udev, 4, GFP_KERNEL, &ar2->buf_dma[i]);
385 ar2->urb[i] = usb_alloc_urb(0, GFP_KERNEL);
389 pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress);
390 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
391 maxp = maxp > 4 ? 4 : maxp;
393 usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp,
394 i ? ati_remote2_complete_key : ati_remote2_complete_mouse,
395 ar2, ar2->ep[i]->bInterval);
396 ar2->urb[i]->transfer_dma = ar2->buf_dma[i];
397 ar2->urb[i]->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
403 static void ati_remote2_urb_cleanup(struct ati_remote2 *ar2)
407 for (i = 0; i < 2; i++) {
408 usb_free_urb(ar2->urb[i]);
409 usb_buffer_free(ar2->udev, 4, ar2->buf[i], ar2->buf_dma[i]);
413 static int ati_remote2_setup(struct ati_remote2 *ar2)
418 * Configure receiver to only accept input from remote "channel"
419 * channel == 0 -> Accept input from any remote channel
420 * channel == 1 -> Only accept input from remote channel 1
421 * channel == 2 -> Only accept input from remote channel 2
423 * channel == 16 -> Only accept input from remote channel 16
427 for (i = 0; i < 16; i++) {
428 if ((1 << i) & channel_mask) {
429 if (!(~(1 << i) & 0xFFFF & channel_mask))
435 r = usb_control_msg(ar2->udev, usb_sndctrlpipe(ar2->udev, 0),
437 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
438 channel, 0x0, NULL, 0, USB_CTRL_SET_TIMEOUT);
440 dev_err(&ar2->udev->dev, "%s - failed to set channel due to error: %d\n",
448 static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id)
450 struct usb_device *udev = interface_to_usbdev(interface);
451 struct usb_host_interface *alt = interface->cur_altsetting;
452 struct ati_remote2 *ar2;
455 if (alt->desc.bInterfaceNumber)
458 ar2 = kzalloc(sizeof (struct ati_remote2), GFP_KERNEL);
464 ar2->intf[0] = interface;
465 ar2->ep[0] = &alt->endpoint[0].desc;
467 ar2->intf[1] = usb_ifnum_to_if(udev, 1);
468 r = usb_driver_claim_interface(&ati_remote2_driver, ar2->intf[1], ar2);
471 alt = ar2->intf[1]->cur_altsetting;
472 ar2->ep[1] = &alt->endpoint[0].desc;
474 r = ati_remote2_urb_init(ar2);
478 r = ati_remote2_setup(ar2);
482 usb_make_path(udev, ar2->phys, sizeof(ar2->phys));
483 strlcat(ar2->phys, "/input0", sizeof(ar2->phys));
485 strlcat(ar2->name, "ATI Remote Wonder II", sizeof(ar2->name));
487 r = ati_remote2_input_init(ar2);
491 usb_set_intfdata(interface, ar2);
496 ati_remote2_urb_cleanup(ar2);
498 usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
505 static void ati_remote2_disconnect(struct usb_interface *interface)
507 struct ati_remote2 *ar2;
508 struct usb_host_interface *alt = interface->cur_altsetting;
510 if (alt->desc.bInterfaceNumber)
513 ar2 = usb_get_intfdata(interface);
514 usb_set_intfdata(interface, NULL);
516 input_unregister_device(ar2->idev);
518 ati_remote2_urb_cleanup(ar2);
520 usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
525 static int __init ati_remote2_init(void)
529 r = usb_register(&ati_remote2_driver);
531 printk(KERN_ERR "ati_remote2: usb_register() = %d\n", r);
533 printk(KERN_INFO "ati_remote2: " DRIVER_DESC " " DRIVER_VERSION "\n");
538 static void __exit ati_remote2_exit(void)
540 usb_deregister(&ati_remote2_driver);
543 module_init(ati_remote2_init);
544 module_exit(ati_remote2_exit);