2 * ati_remote2 - ATI/Philips USB RF remote driver
4 * Copyright (C) 2005 Ville Syrjala <syrjala@sci.fi>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation.
11 #include <linux/usb/input.h>
13 #define DRIVER_DESC "ATI/Philips USB RF remote driver"
14 #define DRIVER_VERSION "0.1"
16 MODULE_DESCRIPTION(DRIVER_DESC);
17 MODULE_VERSION(DRIVER_VERSION);
18 MODULE_AUTHOR("Ville Syrjala <syrjala@sci.fi>");
19 MODULE_LICENSE("GPL");
21 static unsigned int mode_mask = 0x1F;
22 module_param(mode_mask, uint, 0644);
23 MODULE_PARM_DESC(mode_mask, "Bitmask of modes to accept <4:PC><3:AUX4><2:AUX3><1:AUX2><0:AUX1>");
25 static struct usb_device_id ati_remote2_id_table[] = {
26 { USB_DEVICE(0x0471, 0x0602) }, /* ATI Remote Wonder II */
29 MODULE_DEVICE_TABLE(usb, ati_remote2_id_table);
34 } ati_remote2_key_table[] = {
47 { 0x10, KEY_VOLUMEUP },
48 { 0x11, KEY_VOLUMEDOWN },
49 { 0x20, KEY_CHANNELUP },
50 { 0x21, KEY_CHANNELDOWN },
51 { 0x28, KEY_FORWARD },
76 { 0xbe, KEY_QUESTION },
80 { (0x00 << 8) | 0x3f, KEY_PROG1 },
81 { (0x01 << 8) | 0x3f, KEY_PROG2 },
82 { (0x02 << 8) | 0x3f, KEY_PROG3 },
83 { (0x03 << 8) | 0x3f, KEY_PROG4 },
84 { (0x04 << 8) | 0x3f, KEY_PC },
89 struct input_dev *idev;
90 struct usb_device *udev;
92 struct usb_interface *intf[2];
93 struct usb_endpoint_descriptor *ep[2];
96 dma_addr_t buf_dma[2];
98 unsigned long jiffies;
105 static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id);
106 static void ati_remote2_disconnect(struct usb_interface *interface);
108 static struct usb_driver ati_remote2_driver = {
109 .name = "ati_remote2",
110 .probe = ati_remote2_probe,
111 .disconnect = ati_remote2_disconnect,
112 .id_table = ati_remote2_id_table,
115 static int ati_remote2_open(struct input_dev *idev)
117 struct ati_remote2 *ar2 = idev->private;
120 r = usb_submit_urb(ar2->urb[0], GFP_KERNEL);
122 dev_err(&ar2->intf[0]->dev,
123 "%s: usb_submit_urb() = %d\n", __FUNCTION__, r);
126 r = usb_submit_urb(ar2->urb[1], GFP_KERNEL);
128 usb_kill_urb(ar2->urb[0]);
129 dev_err(&ar2->intf[1]->dev,
130 "%s: usb_submit_urb() = %d\n", __FUNCTION__, r);
137 static void ati_remote2_close(struct input_dev *idev)
139 struct ati_remote2 *ar2 = idev->private;
141 usb_kill_urb(ar2->urb[0]);
142 usb_kill_urb(ar2->urb[1]);
145 static void ati_remote2_input_mouse(struct ati_remote2 *ar2)
147 struct input_dev *idev = ar2->idev;
148 u8 *data = ar2->buf[0];
151 dev_err(&ar2->intf[0]->dev,
152 "Unknown mode byte (%02x %02x %02x %02x)\n",
153 data[3], data[2], data[1], data[0]);
157 if (!((1 << data[0]) & mode_mask))
160 input_event(idev, EV_REL, REL_X, (s8) data[1]);
161 input_event(idev, EV_REL, REL_Y, (s8) data[2]);
165 static int ati_remote2_lookup(unsigned int hw_code)
169 for (i = 0; ati_remote2_key_table[i].key_code != KEY_RESERVED; i++)
170 if (ati_remote2_key_table[i].hw_code == hw_code)
176 static void ati_remote2_input_key(struct ati_remote2 *ar2)
178 struct input_dev *idev = ar2->idev;
179 u8 *data = ar2->buf[1];
183 dev_err(&ar2->intf[1]->dev,
184 "Unknown mode byte (%02x %02x %02x %02x)\n",
185 data[3], data[2], data[1], data[0]);
191 * Mode keys (AUX1-AUX4, PC) all generate the same code byte.
192 * Use the mode byte to figure out which one was pressed.
194 if (hw_code == 0x3f) {
196 * For some incomprehensible reason the mouse pad generates
197 * events which look identical to the events from the last
198 * pressed mode key. Naturally we don't want to generate key
199 * events for the mouse pad so we filter out any subsequent
200 * events from the same mode key.
202 if (ar2->mode == data[0])
208 hw_code |= data[0] << 8;
211 if (!((1 << data[0]) & mode_mask))
214 index = ati_remote2_lookup(hw_code);
216 dev_err(&ar2->intf[1]->dev,
217 "Unknown code byte (%02x %02x %02x %02x)\n",
218 data[3], data[2], data[1], data[0]);
223 case 0: /* release */
226 ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_DELAY]);
230 /* No repeat for mouse buttons. */
231 if (ati_remote2_key_table[index].key_code == BTN_LEFT ||
232 ati_remote2_key_table[index].key_code == BTN_RIGHT)
235 if (!time_after_eq(jiffies, ar2->jiffies))
238 ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_PERIOD]);
241 dev_err(&ar2->intf[1]->dev,
242 "Unknown state byte (%02x %02x %02x %02x)\n",
243 data[3], data[2], data[1], data[0]);
247 input_event(idev, EV_KEY, ati_remote2_key_table[index].key_code, data[1]);
251 static void ati_remote2_complete_mouse(struct urb *urb)
253 struct ati_remote2 *ar2 = urb->context;
256 switch (urb->status) {
258 ati_remote2_input_mouse(ar2);
264 dev_dbg(&ar2->intf[0]->dev,
265 "%s(): urb status = %d\n", __FUNCTION__, urb->status);
268 dev_err(&ar2->intf[0]->dev,
269 "%s(): urb status = %d\n", __FUNCTION__, urb->status);
272 r = usb_submit_urb(urb, GFP_ATOMIC);
274 dev_err(&ar2->intf[0]->dev,
275 "%s(): usb_submit_urb() = %d\n", __FUNCTION__, r);
278 static void ati_remote2_complete_key(struct urb *urb)
280 struct ati_remote2 *ar2 = urb->context;
283 switch (urb->status) {
285 ati_remote2_input_key(ar2);
291 dev_dbg(&ar2->intf[1]->dev,
292 "%s(): urb status = %d\n", __FUNCTION__, urb->status);
295 dev_err(&ar2->intf[1]->dev,
296 "%s(): urb status = %d\n", __FUNCTION__, urb->status);
299 r = usb_submit_urb(urb, GFP_ATOMIC);
301 dev_err(&ar2->intf[1]->dev,
302 "%s(): usb_submit_urb() = %d\n", __FUNCTION__, r);
305 static int ati_remote2_input_init(struct ati_remote2 *ar2)
307 struct input_dev *idev;
310 idev = input_allocate_device();
317 idev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_REL);
318 idev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT);
319 idev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
320 for (i = 0; ati_remote2_key_table[i].key_code != KEY_RESERVED; i++)
321 set_bit(ati_remote2_key_table[i].key_code, idev->keybit);
323 idev->rep[REP_DELAY] = 250;
324 idev->rep[REP_PERIOD] = 33;
326 idev->open = ati_remote2_open;
327 idev->close = ati_remote2_close;
329 idev->name = ar2->name;
330 idev->phys = ar2->phys;
332 usb_to_input_id(ar2->udev, &idev->id);
333 idev->cdev.dev = &ar2->udev->dev;
335 i = input_register_device(idev);
337 input_free_device(idev);
342 static int ati_remote2_urb_init(struct ati_remote2 *ar2)
344 struct usb_device *udev = ar2->udev;
347 for (i = 0; i < 2; i++) {
348 ar2->buf[i] = usb_buffer_alloc(udev, 4, GFP_KERNEL, &ar2->buf_dma[i]);
352 ar2->urb[i] = usb_alloc_urb(0, GFP_KERNEL);
356 pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress);
357 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
358 maxp = maxp > 4 ? 4 : maxp;
360 usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp,
361 i ? ati_remote2_complete_key : ati_remote2_complete_mouse,
362 ar2, ar2->ep[i]->bInterval);
363 ar2->urb[i]->transfer_dma = ar2->buf_dma[i];
364 ar2->urb[i]->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
370 static void ati_remote2_urb_cleanup(struct ati_remote2 *ar2)
374 for (i = 0; i < 2; i++) {
375 usb_free_urb(ar2->urb[i]);
378 usb_buffer_free(ar2->udev, 4, ar2->buf[i], ar2->buf_dma[i]);
382 static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id)
384 struct usb_device *udev = interface_to_usbdev(interface);
385 struct usb_host_interface *alt = interface->cur_altsetting;
386 struct ati_remote2 *ar2;
389 if (alt->desc.bInterfaceNumber)
392 ar2 = kzalloc(sizeof (struct ati_remote2), GFP_KERNEL);
398 ar2->intf[0] = interface;
399 ar2->ep[0] = &alt->endpoint[0].desc;
401 ar2->intf[1] = usb_ifnum_to_if(udev, 1);
402 r = usb_driver_claim_interface(&ati_remote2_driver, ar2->intf[1], ar2);
405 alt = ar2->intf[1]->cur_altsetting;
406 ar2->ep[1] = &alt->endpoint[0].desc;
408 r = ati_remote2_urb_init(ar2);
412 usb_make_path(udev, ar2->phys, sizeof(ar2->phys));
413 strlcat(ar2->phys, "/input0", sizeof(ar2->phys));
415 strlcat(ar2->name, "ATI Remote Wonder II", sizeof(ar2->name));
417 r = ati_remote2_input_init(ar2);
421 usb_set_intfdata(interface, ar2);
426 ati_remote2_urb_cleanup(ar2);
428 usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
435 static void ati_remote2_disconnect(struct usb_interface *interface)
437 struct ati_remote2 *ar2;
438 struct usb_host_interface *alt = interface->cur_altsetting;
440 if (alt->desc.bInterfaceNumber)
443 ar2 = usb_get_intfdata(interface);
444 usb_set_intfdata(interface, NULL);
446 input_unregister_device(ar2->idev);
448 ati_remote2_urb_cleanup(ar2);
450 usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
455 static int __init ati_remote2_init(void)
459 r = usb_register(&ati_remote2_driver);
461 printk(KERN_ERR "ati_remote2: usb_register() = %d\n", r);
463 printk(KERN_INFO "ati_remote2: " DRIVER_DESC " " DRIVER_VERSION "\n");
468 static void __exit ati_remote2_exit(void)
470 usb_deregister(&ati_remote2_driver);
473 module_init(ati_remote2_init);
474 module_exit(ati_remote2_exit);