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1da177e4 LT |
1 | /* |
2 | * USB ATI Remote support | |
3 | * | |
4 | * Version 2.2.0 Copyright (c) 2004 Torrey Hoffman <thoffman@arnor.net> | |
5 | * Version 2.1.1 Copyright (c) 2002 Vladimir Dergachev | |
6 | * | |
7 | * This 2.2.0 version is a rewrite / cleanup of the 2.1.1 driver, including | |
8 | * porting to the 2.6 kernel interfaces, along with other modification | |
9 | * to better match the style of the existing usb/input drivers. However, the | |
10 | * protocol and hardware handling is essentially unchanged from 2.1.1. | |
11 | * | |
12 | * The 2.1.1 driver was derived from the usbati_remote and usbkbd drivers by | |
13 | * Vojtech Pavlik. | |
14 | * | |
15 | * Changes: | |
16 | * | |
17 | * Feb 2004: Torrey Hoffman <thoffman@arnor.net> | |
18 | * Version 2.2.0 | |
19 | * Jun 2004: Torrey Hoffman <thoffman@arnor.net> | |
20 | * Version 2.2.1 | |
21 | * Added key repeat support contributed by: | |
22 | * Vincent Vanackere <vanackere@lif.univ-mrs.fr> | |
23 | * Added support for the "Lola" remote contributed by: | |
24 | * Seth Cohn <sethcohn@yahoo.com> | |
25 | * | |
26 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * | |
27 | * | |
28 | * This program is free software; you can redistribute it and/or modify | |
29 | * it under the terms of the GNU General Public License as published by | |
30 | * the Free Software Foundation; either version 2 of the License, or | |
31 | * (at your option) any later version. | |
32 | * | |
33 | * This program is distributed in the hope that it will be useful, | |
34 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
35 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
36 | * GNU General Public License for more details. | |
37 | * | |
38 | * You should have received a copy of the GNU General Public License | |
39 | * along with this program; if not, write to the Free Software | |
40 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
41 | * | |
42 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * | |
43 | * | |
44 | * Hardware & software notes | |
45 | * | |
46 | * These remote controls are distributed by ATI as part of their | |
47 | * "All-In-Wonder" video card packages. The receiver self-identifies as a | |
48 | * "USB Receiver" with manufacturer "X10 Wireless Technology Inc". | |
49 | * | |
50 | * The "Lola" remote is available from X10. See: | |
51 | * http://www.x10.com/products/lola_sg1.htm | |
52 | * The Lola is similar to the ATI remote but has no mouse support, and slightly | |
53 | * different keys. | |
54 | * | |
55 | * It is possible to use multiple receivers and remotes on multiple computers | |
56 | * simultaneously by configuring them to use specific channels. | |
57 | * | |
58 | * The RF protocol used by the remote supports 16 distinct channels, 1 to 16. | |
59 | * Actually, it may even support more, at least in some revisions of the | |
60 | * hardware. | |
61 | * | |
62 | * Each remote can be configured to transmit on one channel as follows: | |
63 | * - Press and hold the "hand icon" button. | |
64 | * - When the red LED starts to blink, let go of the "hand icon" button. | |
65 | * - When it stops blinking, input the channel code as two digits, from 01 | |
66 | * to 16, and press the hand icon again. | |
67 | * | |
68 | * The timing can be a little tricky. Try loading the module with debug=1 | |
69 | * to have the kernel print out messages about the remote control number | |
70 | * and mask. Note: debugging prints remote numbers as zero-based hexadecimal. | |
71 | * | |
72 | * The driver has a "channel_mask" parameter. This bitmask specifies which | |
73 | * channels will be ignored by the module. To mask out channels, just add | |
74 | * all the 2^channel_number values together. | |
75 | * | |
76 | * For instance, set channel_mask = 2^4 = 16 (binary 10000) to make ati_remote | |
77 | * ignore signals coming from remote controls transmitting on channel 4, but | |
78 | * accept all other channels. | |
79 | * | |
80 | * Or, set channel_mask = 65533, (0xFFFD), and all channels except 1 will be | |
81 | * ignored. | |
82 | * | |
83 | * The default is 0 (respond to all channels). Bit 0 and bits 17-32 of this | |
84 | * parameter are unused. | |
85 | * | |
86 | */ | |
87 | ||
88 | #include <linux/config.h> | |
89 | #include <linux/kernel.h> | |
90 | #include <linux/errno.h> | |
91 | #include <linux/init.h> | |
92 | #include <linux/slab.h> | |
93 | #include <linux/module.h> | |
94 | #include <linux/moduleparam.h> | |
95 | #include <linux/input.h> | |
96 | #include <linux/usb.h> | |
97 | #include <linux/wait.h> | |
98 | ||
99 | /* | |
100 | * Module and Version Information, Module Parameters | |
101 | */ | |
102 | ||
103 | #define ATI_REMOTE_VENDOR_ID 0x0bc7 | |
104 | #define ATI_REMOTE_PRODUCT_ID 0x004 | |
105 | #define LOLA_REMOTE_PRODUCT_ID 0x002 | |
106 | #define MEDION_REMOTE_PRODUCT_ID 0x006 | |
107 | ||
108 | #define DRIVER_VERSION "2.2.1" | |
109 | #define DRIVER_AUTHOR "Torrey Hoffman <thoffman@arnor.net>" | |
110 | #define DRIVER_DESC "ATI/X10 RF USB Remote Control" | |
111 | ||
112 | #define NAME_BUFSIZE 80 /* size of product name, path buffers */ | |
113 | #define DATA_BUFSIZE 63 /* size of URB data buffers */ | |
114 | #define ATI_INPUTNUM 1 /* Which input device to register as */ | |
115 | ||
116 | static unsigned long channel_mask = 0; | |
117 | module_param(channel_mask, ulong, 0444); | |
118 | MODULE_PARM_DESC(channel_mask, "Bitmask of remote control channels to ignore"); | |
119 | ||
120 | static int debug = 0; | |
121 | module_param(debug, int, 0444); | |
122 | MODULE_PARM_DESC(debug, "Enable extra debug messages and information"); | |
123 | ||
124 | #define dbginfo(dev, format, arg...) do { if (debug) dev_info(dev , format , ## arg); } while (0) | |
125 | #undef err | |
126 | #define err(format, arg...) printk(KERN_ERR format , ## arg) | |
127 | ||
128 | static struct usb_device_id ati_remote_table[] = { | |
129 | { USB_DEVICE(ATI_REMOTE_VENDOR_ID, ATI_REMOTE_PRODUCT_ID) }, | |
130 | { USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA_REMOTE_PRODUCT_ID) }, | |
131 | { USB_DEVICE(ATI_REMOTE_VENDOR_ID, MEDION_REMOTE_PRODUCT_ID) }, | |
132 | {} /* Terminating entry */ | |
133 | }; | |
134 | ||
135 | MODULE_DEVICE_TABLE(usb, ati_remote_table); | |
136 | ||
137 | /* Get hi and low bytes of a 16-bits int */ | |
138 | #define HI(a) ((unsigned char)((a) >> 8)) | |
139 | #define LO(a) ((unsigned char)((a) & 0xff)) | |
140 | ||
141 | #define SEND_FLAG_IN_PROGRESS 1 | |
142 | #define SEND_FLAG_COMPLETE 2 | |
143 | ||
144 | /* Device initialization strings */ | |
145 | static char init1[] = { 0x01, 0x00, 0x20, 0x14 }; | |
146 | static char init2[] = { 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 }; | |
147 | ||
148 | /* Acceleration curve for directional control pad */ | |
149 | static char accel[] = { 1, 2, 4, 6, 9, 13, 20 }; | |
150 | ||
151 | /* Duplicate event filtering time. | |
152 | * Sequential, identical KIND_FILTERED inputs with less than | |
153 | * FILTER_TIME jiffies between them are considered as repeat | |
154 | * events. The hardware generates 5 events for the first keypress | |
155 | * and we have to take this into account for an accurate repeat | |
156 | * behaviour. | |
157 | * (HZ / 20) == 50 ms and works well for me. | |
158 | */ | |
159 | #define FILTER_TIME (HZ / 20) | |
160 | ||
161 | static DECLARE_MUTEX(disconnect_sem); | |
162 | ||
163 | struct ati_remote { | |
164 | struct input_dev idev; | |
165 | struct usb_device *udev; | |
166 | struct usb_interface *interface; | |
167 | ||
168 | struct urb *irq_urb; | |
169 | struct urb *out_urb; | |
170 | struct usb_endpoint_descriptor *endpoint_in; | |
171 | struct usb_endpoint_descriptor *endpoint_out; | |
172 | unsigned char *inbuf; | |
173 | unsigned char *outbuf; | |
174 | dma_addr_t inbuf_dma; | |
175 | dma_addr_t outbuf_dma; | |
176 | ||
177 | int open; /* open counter */ | |
178 | ||
179 | unsigned char old_data[2]; /* Detect duplicate events */ | |
180 | unsigned long old_jiffies; | |
181 | unsigned long acc_jiffies; /* handle acceleration */ | |
182 | unsigned int repeat_count; | |
183 | ||
184 | char name[NAME_BUFSIZE]; | |
185 | char phys[NAME_BUFSIZE]; | |
186 | ||
187 | wait_queue_head_t wait; | |
188 | int send_flags; | |
189 | }; | |
190 | ||
191 | /* "Kinds" of messages sent from the hardware to the driver. */ | |
192 | #define KIND_END 0 | |
193 | #define KIND_LITERAL 1 /* Simply pass to input system */ | |
194 | #define KIND_FILTERED 2 /* Add artificial key-up events, drop keyrepeats */ | |
195 | #define KIND_LU 3 /* Directional keypad diagonals - left up, */ | |
196 | #define KIND_RU 4 /* right up, */ | |
197 | #define KIND_LD 5 /* left down, */ | |
198 | #define KIND_RD 6 /* right down */ | |
199 | #define KIND_ACCEL 7 /* Directional keypad - left, right, up, down.*/ | |
200 | ||
201 | /* Translation table from hardware messages to input events. */ | |
202 | static struct | |
203 | { | |
204 | short kind; | |
205 | unsigned char data1, data2; | |
206 | int type; | |
207 | unsigned int code; | |
208 | int value; | |
209 | } ati_remote_tbl[] = | |
210 | { | |
211 | /* Directional control pad axes */ | |
212 | {KIND_ACCEL, 0x35, 0x70, EV_REL, REL_X, -1}, /* left */ | |
213 | {KIND_ACCEL, 0x36, 0x71, EV_REL, REL_X, 1}, /* right */ | |
214 | {KIND_ACCEL, 0x37, 0x72, EV_REL, REL_Y, -1}, /* up */ | |
215 | {KIND_ACCEL, 0x38, 0x73, EV_REL, REL_Y, 1}, /* down */ | |
216 | /* Directional control pad diagonals */ | |
217 | {KIND_LU, 0x39, 0x74, EV_REL, 0, 0}, /* left up */ | |
218 | {KIND_RU, 0x3a, 0x75, EV_REL, 0, 0}, /* right up */ | |
219 | {KIND_LD, 0x3c, 0x77, EV_REL, 0, 0}, /* left down */ | |
220 | {KIND_RD, 0x3b, 0x76, EV_REL, 0, 0}, /* right down */ | |
221 | ||
222 | /* "Mouse button" buttons */ | |
223 | {KIND_LITERAL, 0x3d, 0x78, EV_KEY, BTN_LEFT, 1}, /* left btn down */ | |
224 | {KIND_LITERAL, 0x3e, 0x79, EV_KEY, BTN_LEFT, 0}, /* left btn up */ | |
225 | {KIND_LITERAL, 0x41, 0x7c, EV_KEY, BTN_RIGHT, 1},/* right btn down */ | |
226 | {KIND_LITERAL, 0x42, 0x7d, EV_KEY, BTN_RIGHT, 0},/* right btn up */ | |
227 | ||
228 | /* Artificial "doubleclick" events are generated by the hardware. | |
229 | * They are mapped to the "side" and "extra" mouse buttons here. */ | |
230 | {KIND_FILTERED, 0x3f, 0x7a, EV_KEY, BTN_SIDE, 1}, /* left dblclick */ | |
231 | {KIND_FILTERED, 0x43, 0x7e, EV_KEY, BTN_EXTRA, 1},/* right dblclick */ | |
232 | ||
233 | /* keyboard. */ | |
234 | {KIND_FILTERED, 0xd2, 0x0d, EV_KEY, KEY_1, 1}, | |
235 | {KIND_FILTERED, 0xd3, 0x0e, EV_KEY, KEY_2, 1}, | |
236 | {KIND_FILTERED, 0xd4, 0x0f, EV_KEY, KEY_3, 1}, | |
237 | {KIND_FILTERED, 0xd5, 0x10, EV_KEY, KEY_4, 1}, | |
238 | {KIND_FILTERED, 0xd6, 0x11, EV_KEY, KEY_5, 1}, | |
239 | {KIND_FILTERED, 0xd7, 0x12, EV_KEY, KEY_6, 1}, | |
240 | {KIND_FILTERED, 0xd8, 0x13, EV_KEY, KEY_7, 1}, | |
241 | {KIND_FILTERED, 0xd9, 0x14, EV_KEY, KEY_8, 1}, | |
242 | {KIND_FILTERED, 0xda, 0x15, EV_KEY, KEY_9, 1}, | |
243 | {KIND_FILTERED, 0xdc, 0x17, EV_KEY, KEY_0, 1}, | |
244 | {KIND_FILTERED, 0xc5, 0x00, EV_KEY, KEY_A, 1}, | |
245 | {KIND_FILTERED, 0xc6, 0x01, EV_KEY, KEY_B, 1}, | |
246 | {KIND_FILTERED, 0xde, 0x19, EV_KEY, KEY_C, 1}, | |
247 | {KIND_FILTERED, 0xe0, 0x1b, EV_KEY, KEY_D, 1}, | |
248 | {KIND_FILTERED, 0xe6, 0x21, EV_KEY, KEY_E, 1}, | |
249 | {KIND_FILTERED, 0xe8, 0x23, EV_KEY, KEY_F, 1}, | |
250 | ||
251 | /* "special" keys */ | |
252 | {KIND_FILTERED, 0xdd, 0x18, EV_KEY, KEY_KPENTER, 1}, /* "check" */ | |
253 | {KIND_FILTERED, 0xdb, 0x16, EV_KEY, KEY_MENU, 1}, /* "menu" */ | |
254 | {KIND_FILTERED, 0xc7, 0x02, EV_KEY, KEY_POWER, 1}, /* Power */ | |
255 | {KIND_FILTERED, 0xc8, 0x03, EV_KEY, KEY_TV, 1}, /* TV */ | |
256 | {KIND_FILTERED, 0xc9, 0x04, EV_KEY, KEY_DVD, 1}, /* DVD */ | |
257 | {KIND_FILTERED, 0xca, 0x05, EV_KEY, KEY_WWW, 1}, /* WEB */ | |
258 | {KIND_FILTERED, 0xcb, 0x06, EV_KEY, KEY_BOOKMARKS, 1}, /* "book" */ | |
259 | {KIND_FILTERED, 0xcc, 0x07, EV_KEY, KEY_EDIT, 1}, /* "hand" */ | |
260 | {KIND_FILTERED, 0xe1, 0x1c, EV_KEY, KEY_COFFEE, 1}, /* "timer" */ | |
261 | {KIND_FILTERED, 0xe5, 0x20, EV_KEY, KEY_FRONT, 1}, /* "max" */ | |
262 | {KIND_FILTERED, 0xe2, 0x1d, EV_KEY, KEY_LEFT, 1}, /* left */ | |
263 | {KIND_FILTERED, 0xe4, 0x1f, EV_KEY, KEY_RIGHT, 1}, /* right */ | |
264 | {KIND_FILTERED, 0xe7, 0x22, EV_KEY, KEY_DOWN, 1}, /* down */ | |
265 | {KIND_FILTERED, 0xdf, 0x1a, EV_KEY, KEY_UP, 1}, /* up */ | |
266 | {KIND_FILTERED, 0xe3, 0x1e, EV_KEY, KEY_OK, 1}, /* "OK" */ | |
267 | {KIND_FILTERED, 0xce, 0x09, EV_KEY, KEY_VOLUMEDOWN, 1}, /* VOL + */ | |
268 | {KIND_FILTERED, 0xcd, 0x08, EV_KEY, KEY_VOLUMEUP, 1}, /* VOL - */ | |
269 | {KIND_FILTERED, 0xcf, 0x0a, EV_KEY, KEY_MUTE, 1}, /* MUTE */ | |
270 | {KIND_FILTERED, 0xd0, 0x0b, EV_KEY, KEY_CHANNELUP, 1}, /* CH + */ | |
271 | {KIND_FILTERED, 0xd1, 0x0c, EV_KEY, KEY_CHANNELDOWN, 1},/* CH - */ | |
272 | {KIND_FILTERED, 0xec, 0x27, EV_KEY, KEY_RECORD, 1}, /* ( o) red */ | |
273 | {KIND_FILTERED, 0xea, 0x25, EV_KEY, KEY_PLAY, 1}, /* ( >) */ | |
274 | {KIND_FILTERED, 0xe9, 0x24, EV_KEY, KEY_REWIND, 1}, /* (<<) */ | |
275 | {KIND_FILTERED, 0xeb, 0x26, EV_KEY, KEY_FORWARD, 1}, /* (>>) */ | |
276 | {KIND_FILTERED, 0xed, 0x28, EV_KEY, KEY_STOP, 1}, /* ([]) */ | |
277 | {KIND_FILTERED, 0xee, 0x29, EV_KEY, KEY_PAUSE, 1}, /* ('') */ | |
278 | {KIND_FILTERED, 0xf0, 0x2b, EV_KEY, KEY_PREVIOUS, 1}, /* (<-) */ | |
279 | {KIND_FILTERED, 0xef, 0x2a, EV_KEY, KEY_NEXT, 1}, /* (>+) */ | |
280 | {KIND_FILTERED, 0xf2, 0x2D, EV_KEY, KEY_INFO, 1}, /* PLAYING */ | |
281 | {KIND_FILTERED, 0xf3, 0x2E, EV_KEY, KEY_HOME, 1}, /* TOP */ | |
282 | {KIND_FILTERED, 0xf4, 0x2F, EV_KEY, KEY_END, 1}, /* END */ | |
283 | {KIND_FILTERED, 0xf5, 0x30, EV_KEY, KEY_SELECT, 1}, /* SELECT */ | |
284 | ||
285 | {KIND_END, 0x00, 0x00, EV_MAX + 1, 0, 0} | |
286 | }; | |
287 | ||
288 | /* Local function prototypes */ | |
289 | static void ati_remote_dump (unsigned char *data, unsigned int actual_length); | |
290 | static void ati_remote_delete (struct ati_remote *dev); | |
291 | static int ati_remote_open (struct input_dev *inputdev); | |
292 | static void ati_remote_close (struct input_dev *inputdev); | |
293 | static int ati_remote_sendpacket (struct ati_remote *ati_remote, u16 cmd, unsigned char *data); | |
294 | static void ati_remote_irq_out (struct urb *urb, struct pt_regs *regs); | |
295 | static void ati_remote_irq_in (struct urb *urb, struct pt_regs *regs); | |
296 | static void ati_remote_input_report (struct urb *urb, struct pt_regs *regs); | |
297 | static int ati_remote_initialize (struct ati_remote *ati_remote); | |
298 | static int ati_remote_probe (struct usb_interface *interface, const struct usb_device_id *id); | |
299 | static void ati_remote_disconnect (struct usb_interface *interface); | |
300 | ||
301 | /* usb specific object to register with the usb subsystem */ | |
302 | static struct usb_driver ati_remote_driver = { | |
303 | .owner = THIS_MODULE, | |
304 | .name = "ati_remote", | |
305 | .probe = ati_remote_probe, | |
306 | .disconnect = ati_remote_disconnect, | |
307 | .id_table = ati_remote_table, | |
308 | }; | |
309 | ||
310 | /* | |
311 | * ati_remote_dump_input | |
312 | */ | |
313 | static void ati_remote_dump(unsigned char *data, unsigned int len) | |
314 | { | |
315 | if ((len == 1) && (data[0] != (unsigned char)0xff) && (data[0] != 0x00)) | |
316 | warn("Weird byte 0x%02x", data[0]); | |
317 | else if (len == 4) | |
318 | warn("Weird key %02x %02x %02x %02x", | |
319 | data[0], data[1], data[2], data[3]); | |
320 | else | |
321 | warn("Weird data, len=%d %02x %02x %02x %02x %02x %02x ...", | |
322 | len, data[0], data[1], data[2], data[3], data[4], data[5]); | |
323 | } | |
324 | ||
325 | /* | |
326 | * ati_remote_open | |
327 | */ | |
328 | static int ati_remote_open(struct input_dev *inputdev) | |
329 | { | |
330 | struct ati_remote *ati_remote = inputdev->private; | |
331 | int retval = 0; | |
332 | ||
333 | down(&disconnect_sem); | |
334 | ||
335 | if (ati_remote->open++) | |
336 | goto exit; | |
337 | ||
338 | /* On first open, submit the read urb which was set up previously. */ | |
339 | ati_remote->irq_urb->dev = ati_remote->udev; | |
340 | if (usb_submit_urb(ati_remote->irq_urb, GFP_KERNEL)) { | |
341 | dev_err(&ati_remote->interface->dev, | |
342 | "%s: usb_submit_urb failed!\n", __FUNCTION__); | |
343 | ati_remote->open--; | |
344 | retval = -EIO; | |
345 | } | |
346 | ||
347 | exit: | |
348 | up(&disconnect_sem); | |
349 | return retval; | |
350 | } | |
351 | ||
352 | /* | |
353 | * ati_remote_close | |
354 | */ | |
355 | static void ati_remote_close(struct input_dev *inputdev) | |
356 | { | |
357 | struct ati_remote *ati_remote = inputdev->private; | |
358 | ||
359 | if (!--ati_remote->open) | |
360 | usb_kill_urb(ati_remote->irq_urb); | |
361 | } | |
362 | ||
363 | /* | |
364 | * ati_remote_irq_out | |
365 | */ | |
366 | static void ati_remote_irq_out(struct urb *urb, struct pt_regs *regs) | |
367 | { | |
368 | struct ati_remote *ati_remote = urb->context; | |
369 | ||
370 | if (urb->status) { | |
371 | dev_dbg(&ati_remote->interface->dev, "%s: status %d\n", | |
372 | __FUNCTION__, urb->status); | |
373 | return; | |
374 | } | |
375 | ||
376 | ati_remote->send_flags |= SEND_FLAG_COMPLETE; | |
377 | wmb(); | |
378 | wake_up(&ati_remote->wait); | |
379 | } | |
380 | ||
381 | /* | |
382 | * ati_remote_sendpacket | |
383 | * | |
384 | * Used to send device initialization strings | |
385 | */ | |
386 | static int ati_remote_sendpacket(struct ati_remote *ati_remote, u16 cmd, unsigned char *data) | |
387 | { | |
388 | int retval = 0; | |
389 | ||
390 | /* Set up out_urb */ | |
391 | memcpy(ati_remote->out_urb->transfer_buffer + 1, data, LO(cmd)); | |
392 | ((char *) ati_remote->out_urb->transfer_buffer)[0] = HI(cmd); | |
393 | ||
394 | ati_remote->out_urb->transfer_buffer_length = LO(cmd) + 1; | |
395 | ati_remote->out_urb->dev = ati_remote->udev; | |
396 | ati_remote->send_flags = SEND_FLAG_IN_PROGRESS; | |
397 | ||
398 | retval = usb_submit_urb(ati_remote->out_urb, GFP_ATOMIC); | |
399 | if (retval) { | |
400 | dev_dbg(&ati_remote->interface->dev, | |
401 | "sendpacket: usb_submit_urb failed: %d\n", retval); | |
402 | return retval; | |
403 | } | |
404 | ||
405 | wait_event_timeout(ati_remote->wait, | |
406 | ((ati_remote->out_urb->status != -EINPROGRESS) || | |
407 | (ati_remote->send_flags & SEND_FLAG_COMPLETE)), | |
408 | HZ); | |
409 | usb_kill_urb(ati_remote->out_urb); | |
410 | ||
411 | return retval; | |
412 | } | |
413 | ||
414 | /* | |
415 | * ati_remote_event_lookup | |
416 | */ | |
417 | static int ati_remote_event_lookup(int rem, unsigned char d1, unsigned char d2) | |
418 | { | |
419 | int i; | |
420 | ||
421 | for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) { | |
422 | /* | |
423 | * Decide if the table entry matches the remote input. | |
424 | */ | |
425 | if ((((ati_remote_tbl[i].data1 & 0x0f) == (d1 & 0x0f))) && | |
426 | ((((ati_remote_tbl[i].data1 >> 4) - | |
427 | (d1 >> 4) + rem) & 0x0f) == 0x0f) && | |
428 | (ati_remote_tbl[i].data2 == d2)) | |
429 | return i; | |
430 | ||
431 | } | |
432 | return -1; | |
433 | } | |
434 | ||
435 | /* | |
436 | * ati_remote_report_input | |
437 | */ | |
438 | static void ati_remote_input_report(struct urb *urb, struct pt_regs *regs) | |
439 | { | |
440 | struct ati_remote *ati_remote = urb->context; | |
441 | unsigned char *data= ati_remote->inbuf; | |
442 | struct input_dev *dev = &ati_remote->idev; | |
443 | int index, acc; | |
444 | int remote_num; | |
445 | ||
446 | /* Deal with strange looking inputs */ | |
447 | if ( (urb->actual_length != 4) || (data[0] != 0x14) || | |
448 | ((data[3] & 0x0f) != 0x00) ) { | |
449 | ati_remote_dump(data, urb->actual_length); | |
450 | return; | |
451 | } | |
452 | ||
453 | /* Mask unwanted remote channels. */ | |
454 | /* note: remote_num is 0-based, channel 1 on remote == 0 here */ | |
455 | remote_num = (data[3] >> 4) & 0x0f; | |
456 | if (channel_mask & (1 << (remote_num + 1))) { | |
457 | dbginfo(&ati_remote->interface->dev, | |
458 | "Masked input from channel 0x%02x: data %02x,%02x, mask= 0x%02lx\n", | |
459 | remote_num, data[1], data[2], channel_mask); | |
460 | return; | |
461 | } | |
462 | ||
463 | /* Look up event code index in translation table */ | |
464 | index = ati_remote_event_lookup(remote_num, data[1], data[2]); | |
465 | if (index < 0) { | |
466 | dev_warn(&ati_remote->interface->dev, | |
467 | "Unknown input from channel 0x%02x: data %02x,%02x\n", | |
468 | remote_num, data[1], data[2]); | |
469 | return; | |
470 | } | |
471 | dbginfo(&ati_remote->interface->dev, | |
472 | "channel 0x%02x; data %02x,%02x; index %d; keycode %d\n", | |
473 | remote_num, data[1], data[2], index, ati_remote_tbl[index].code); | |
474 | ||
475 | if (ati_remote_tbl[index].kind == KIND_LITERAL) { | |
476 | input_regs(dev, regs); | |
477 | input_event(dev, ati_remote_tbl[index].type, | |
478 | ati_remote_tbl[index].code, | |
479 | ati_remote_tbl[index].value); | |
480 | input_sync(dev); | |
481 | ||
482 | ati_remote->old_jiffies = jiffies; | |
483 | return; | |
484 | } | |
485 | ||
486 | if (ati_remote_tbl[index].kind == KIND_FILTERED) { | |
487 | /* Filter duplicate events which happen "too close" together. */ | |
488 | if ((ati_remote->old_data[0] == data[1]) && | |
489 | (ati_remote->old_data[1] == data[2]) && | |
490 | ((ati_remote->old_jiffies + FILTER_TIME) > jiffies)) { | |
491 | ati_remote->repeat_count++; | |
492 | } | |
493 | else { | |
494 | ati_remote->repeat_count = 0; | |
495 | } | |
496 | ||
497 | ati_remote->old_data[0] = data[1]; | |
498 | ati_remote->old_data[1] = data[2]; | |
499 | ati_remote->old_jiffies = jiffies; | |
500 | ||
501 | if ((ati_remote->repeat_count > 0) | |
502 | && (ati_remote->repeat_count < 5)) | |
503 | return; | |
504 | ||
505 | ||
506 | input_regs(dev, regs); | |
507 | input_event(dev, ati_remote_tbl[index].type, | |
508 | ati_remote_tbl[index].code, 1); | |
509 | input_event(dev, ati_remote_tbl[index].type, | |
510 | ati_remote_tbl[index].code, 0); | |
511 | input_sync(dev); | |
512 | ||
513 | return; | |
514 | } | |
515 | ||
516 | /* | |
517 | * Other event kinds are from the directional control pad, and have an | |
518 | * acceleration factor applied to them. Without this acceleration, the | |
519 | * control pad is mostly unusable. | |
520 | * | |
521 | * If elapsed time since last event is > 1/4 second, user "stopped", | |
522 | * so reset acceleration. Otherwise, user is probably holding the control | |
523 | * pad down, so we increase acceleration, ramping up over two seconds to | |
524 | * a maximum speed. The acceleration curve is #defined above. | |
525 | */ | |
526 | if ((jiffies - ati_remote->old_jiffies) > (HZ >> 2)) { | |
527 | acc = 1; | |
528 | ati_remote->acc_jiffies = jiffies; | |
529 | } | |
530 | else if ((jiffies - ati_remote->acc_jiffies) < (HZ >> 3)) acc = accel[0]; | |
531 | else if ((jiffies - ati_remote->acc_jiffies) < (HZ >> 2)) acc = accel[1]; | |
532 | else if ((jiffies - ati_remote->acc_jiffies) < (HZ >> 1)) acc = accel[2]; | |
533 | else if ((jiffies - ati_remote->acc_jiffies) < HZ ) acc = accel[3]; | |
534 | else if ((jiffies - ati_remote->acc_jiffies) < HZ+(HZ>>1)) acc = accel[4]; | |
535 | else if ((jiffies - ati_remote->acc_jiffies) < (HZ << 1)) acc = accel[5]; | |
536 | else acc = accel[6]; | |
537 | ||
538 | input_regs(dev, regs); | |
539 | switch (ati_remote_tbl[index].kind) { | |
540 | case KIND_ACCEL: | |
541 | input_event(dev, ati_remote_tbl[index].type, | |
542 | ati_remote_tbl[index].code, | |
543 | ati_remote_tbl[index].value * acc); | |
544 | break; | |
545 | case KIND_LU: | |
546 | input_report_rel(dev, REL_X, -acc); | |
547 | input_report_rel(dev, REL_Y, -acc); | |
548 | break; | |
549 | case KIND_RU: | |
550 | input_report_rel(dev, REL_X, acc); | |
551 | input_report_rel(dev, REL_Y, -acc); | |
552 | break; | |
553 | case KIND_LD: | |
554 | input_report_rel(dev, REL_X, -acc); | |
555 | input_report_rel(dev, REL_Y, acc); | |
556 | break; | |
557 | case KIND_RD: | |
558 | input_report_rel(dev, REL_X, acc); | |
559 | input_report_rel(dev, REL_Y, acc); | |
560 | break; | |
561 | default: | |
562 | dev_dbg(&ati_remote->interface->dev, "ati_remote kind=%d\n", | |
563 | ati_remote_tbl[index].kind); | |
564 | } | |
565 | input_sync(dev); | |
566 | ||
567 | ati_remote->old_jiffies = jiffies; | |
568 | ati_remote->old_data[0] = data[1]; | |
569 | ati_remote->old_data[1] = data[2]; | |
570 | } | |
571 | ||
572 | /* | |
573 | * ati_remote_irq_in | |
574 | */ | |
575 | static void ati_remote_irq_in(struct urb *urb, struct pt_regs *regs) | |
576 | { | |
577 | struct ati_remote *ati_remote = urb->context; | |
578 | int retval; | |
579 | ||
580 | switch (urb->status) { | |
581 | case 0: /* success */ | |
582 | ati_remote_input_report(urb, regs); | |
583 | break; | |
584 | case -ECONNRESET: /* unlink */ | |
585 | case -ENOENT: | |
586 | case -ESHUTDOWN: | |
587 | dev_dbg(&ati_remote->interface->dev, "%s: urb error status, unlink? \n", | |
588 | __FUNCTION__); | |
589 | return; | |
590 | default: /* error */ | |
591 | dev_dbg(&ati_remote->interface->dev, "%s: Nonzero urb status %d\n", | |
592 | __FUNCTION__, urb->status); | |
593 | } | |
594 | ||
595 | retval = usb_submit_urb(urb, SLAB_ATOMIC); | |
596 | if (retval) | |
597 | dev_err(&ati_remote->interface->dev, "%s: usb_submit_urb()=%d\n", | |
598 | __FUNCTION__, retval); | |
599 | } | |
600 | ||
601 | /* | |
602 | * ati_remote_delete | |
603 | */ | |
604 | static void ati_remote_delete(struct ati_remote *ati_remote) | |
605 | { | |
606 | if (!ati_remote) return; | |
607 | ||
608 | if (ati_remote->irq_urb) | |
609 | usb_kill_urb(ati_remote->irq_urb); | |
610 | ||
611 | if (ati_remote->out_urb) | |
612 | usb_kill_urb(ati_remote->out_urb); | |
613 | ||
614 | input_unregister_device(&ati_remote->idev); | |
615 | ||
616 | if (ati_remote->inbuf) | |
617 | usb_buffer_free(ati_remote->udev, DATA_BUFSIZE, | |
618 | ati_remote->inbuf, ati_remote->inbuf_dma); | |
619 | ||
620 | if (ati_remote->outbuf) | |
621 | usb_buffer_free(ati_remote->udev, DATA_BUFSIZE, | |
9719b0c2 | 622 | ati_remote->outbuf, ati_remote->outbuf_dma); |
1da177e4 LT |
623 | |
624 | if (ati_remote->irq_urb) | |
625 | usb_free_urb(ati_remote->irq_urb); | |
626 | ||
627 | if (ati_remote->out_urb) | |
628 | usb_free_urb(ati_remote->out_urb); | |
629 | ||
630 | kfree(ati_remote); | |
631 | } | |
632 | ||
633 | static void ati_remote_input_init(struct ati_remote *ati_remote) | |
634 | { | |
635 | struct input_dev *idev = &(ati_remote->idev); | |
636 | int i; | |
637 | ||
638 | idev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL); | |
639 | idev->keybit[LONG(BTN_MOUSE)] = ( BIT(BTN_LEFT) | BIT(BTN_RIGHT) | | |
640 | BIT(BTN_SIDE) | BIT(BTN_EXTRA) ); | |
641 | idev->relbit[0] = BIT(REL_X) | BIT(REL_Y); | |
642 | for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) | |
643 | if (ati_remote_tbl[i].type == EV_KEY) | |
644 | set_bit(ati_remote_tbl[i].code, idev->keybit); | |
645 | ||
646 | idev->private = ati_remote; | |
647 | idev->open = ati_remote_open; | |
648 | idev->close = ati_remote_close; | |
649 | ||
650 | idev->name = ati_remote->name; | |
651 | idev->phys = ati_remote->phys; | |
652 | ||
653 | idev->id.bustype = BUS_USB; | |
654 | idev->id.vendor = le16_to_cpu(ati_remote->udev->descriptor.idVendor); | |
655 | idev->id.product = le16_to_cpu(ati_remote->udev->descriptor.idProduct); | |
656 | idev->id.version = le16_to_cpu(ati_remote->udev->descriptor.bcdDevice); | |
657 | } | |
658 | ||
659 | static int ati_remote_initialize(struct ati_remote *ati_remote) | |
660 | { | |
661 | struct usb_device *udev = ati_remote->udev; | |
662 | int pipe, maxp; | |
663 | ||
664 | init_waitqueue_head(&ati_remote->wait); | |
665 | ||
666 | /* Set up irq_urb */ | |
667 | pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress); | |
668 | maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); | |
669 | maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp; | |
670 | ||
671 | usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf, | |
672 | maxp, ati_remote_irq_in, ati_remote, | |
673 | ati_remote->endpoint_in->bInterval); | |
674 | ati_remote->irq_urb->transfer_dma = ati_remote->inbuf_dma; | |
675 | ati_remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
676 | ||
677 | /* Set up out_urb */ | |
678 | pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress); | |
679 | maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); | |
680 | maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp; | |
681 | ||
682 | usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf, | |
683 | maxp, ati_remote_irq_out, ati_remote, | |
684 | ati_remote->endpoint_out->bInterval); | |
685 | ati_remote->out_urb->transfer_dma = ati_remote->outbuf_dma; | |
686 | ati_remote->out_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
687 | ||
688 | /* send initialization strings */ | |
689 | if ((ati_remote_sendpacket(ati_remote, 0x8004, init1)) || | |
690 | (ati_remote_sendpacket(ati_remote, 0x8007, init2))) { | |
691 | dev_err(&ati_remote->interface->dev, | |
692 | "Initializing ati_remote hardware failed.\n"); | |
693 | return 1; | |
694 | } | |
695 | ||
696 | return 0; | |
697 | } | |
698 | ||
699 | /* | |
700 | * ati_remote_probe | |
701 | */ | |
702 | static int ati_remote_probe(struct usb_interface *interface, const struct usb_device_id *id) | |
703 | { | |
704 | struct usb_device *udev = interface_to_usbdev(interface); | |
705 | struct ati_remote *ati_remote = NULL; | |
706 | struct usb_host_interface *iface_host; | |
707 | int retval = -ENOMEM; | |
708 | char path[64]; | |
709 | ||
710 | /* Allocate and clear an ati_remote struct */ | |
711 | if (!(ati_remote = kmalloc(sizeof (struct ati_remote), GFP_KERNEL))) | |
712 | return -ENOMEM; | |
713 | memset(ati_remote, 0x00, sizeof (struct ati_remote)); | |
714 | ||
715 | iface_host = interface->cur_altsetting; | |
716 | if (iface_host->desc.bNumEndpoints != 2) { | |
717 | err("%s: Unexpected desc.bNumEndpoints\n", __FUNCTION__); | |
718 | retval = -ENODEV; | |
719 | goto error; | |
720 | } | |
721 | ||
722 | ati_remote->endpoint_in = &(iface_host->endpoint[0].desc); | |
723 | ati_remote->endpoint_out = &(iface_host->endpoint[1].desc); | |
724 | ati_remote->udev = udev; | |
725 | ati_remote->interface = interface; | |
726 | ||
727 | if (!(ati_remote->endpoint_in->bEndpointAddress & 0x80)) { | |
728 | err("%s: Unexpected endpoint_in->bEndpointAddress\n", __FUNCTION__); | |
729 | retval = -ENODEV; | |
730 | goto error; | |
731 | } | |
732 | if ((ati_remote->endpoint_in->bmAttributes & 3) != 3) { | |
733 | err("%s: Unexpected endpoint_in->bmAttributes\n", __FUNCTION__); | |
734 | retval = -ENODEV; | |
735 | goto error; | |
736 | } | |
737 | if (le16_to_cpu(ati_remote->endpoint_in->wMaxPacketSize) == 0) { | |
738 | err("%s: endpoint_in message size==0? \n", __FUNCTION__); | |
739 | retval = -ENODEV; | |
740 | goto error; | |
741 | } | |
742 | ||
743 | /* Allocate URB buffers, URBs */ | |
744 | ati_remote->inbuf = usb_buffer_alloc(udev, DATA_BUFSIZE, SLAB_ATOMIC, | |
745 | &ati_remote->inbuf_dma); | |
746 | if (!ati_remote->inbuf) | |
747 | goto error; | |
748 | ||
749 | ati_remote->outbuf = usb_buffer_alloc(udev, DATA_BUFSIZE, SLAB_ATOMIC, | |
750 | &ati_remote->outbuf_dma); | |
751 | if (!ati_remote->outbuf) | |
752 | goto error; | |
753 | ||
754 | ati_remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL); | |
755 | if (!ati_remote->irq_urb) | |
756 | goto error; | |
757 | ||
758 | ati_remote->out_urb = usb_alloc_urb(0, GFP_KERNEL); | |
759 | if (!ati_remote->out_urb) | |
760 | goto error; | |
761 | ||
762 | usb_make_path(udev, path, NAME_BUFSIZE); | |
763 | sprintf(ati_remote->phys, "%s/input%d", path, ATI_INPUTNUM); | |
764 | if (udev->manufacturer) | |
765 | strcat(ati_remote->name, udev->manufacturer); | |
766 | ||
767 | if (udev->product) | |
768 | sprintf(ati_remote->name, "%s %s", ati_remote->name, udev->product); | |
769 | ||
770 | if (!strlen(ati_remote->name)) | |
771 | sprintf(ati_remote->name, DRIVER_DESC "(%04x,%04x)", | |
772 | le16_to_cpu(ati_remote->udev->descriptor.idVendor), | |
773 | le16_to_cpu(ati_remote->udev->descriptor.idProduct)); | |
774 | ||
775 | /* Device Hardware Initialization - fills in ati_remote->idev from udev. */ | |
776 | retval = ati_remote_initialize(ati_remote); | |
777 | if (retval) | |
778 | goto error; | |
779 | ||
780 | /* Set up and register input device */ | |
781 | ati_remote_input_init(ati_remote); | |
782 | input_register_device(&ati_remote->idev); | |
783 | ||
784 | dev_info(&ati_remote->interface->dev, "Input registered: %s on %s\n", | |
785 | ati_remote->name, path); | |
786 | ||
787 | usb_set_intfdata(interface, ati_remote); | |
788 | ||
789 | error: | |
790 | if (retval) | |
791 | ati_remote_delete(ati_remote); | |
792 | ||
793 | return retval; | |
794 | } | |
795 | ||
796 | /* | |
797 | * ati_remote_disconnect | |
798 | */ | |
799 | static void ati_remote_disconnect(struct usb_interface *interface) | |
800 | { | |
801 | struct ati_remote *ati_remote; | |
802 | ||
803 | down(&disconnect_sem); | |
804 | ||
805 | ati_remote = usb_get_intfdata(interface); | |
806 | usb_set_intfdata(interface, NULL); | |
807 | if (!ati_remote) { | |
808 | warn("%s - null device?\n", __FUNCTION__); | |
809 | return; | |
810 | } | |
811 | ||
812 | ati_remote_delete(ati_remote); | |
813 | ||
814 | up(&disconnect_sem); | |
815 | } | |
816 | ||
817 | /* | |
818 | * ati_remote_init | |
819 | */ | |
820 | static int __init ati_remote_init(void) | |
821 | { | |
822 | int result; | |
823 | ||
824 | result = usb_register(&ati_remote_driver); | |
825 | if (result) | |
826 | err("usb_register error #%d\n", result); | |
827 | else | |
828 | info("Registered USB driver " DRIVER_DESC " v. " DRIVER_VERSION); | |
829 | ||
830 | return result; | |
831 | } | |
832 | ||
833 | /* | |
834 | * ati_remote_exit | |
835 | */ | |
836 | static void __exit ati_remote_exit(void) | |
837 | { | |
838 | usb_deregister(&ati_remote_driver); | |
839 | } | |
840 | ||
841 | /* | |
842 | * module specification | |
843 | */ | |
844 | ||
845 | module_init(ati_remote_init); | |
846 | module_exit(ati_remote_exit); | |
847 | ||
848 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
849 | MODULE_DESCRIPTION(DRIVER_DESC); | |
850 | MODULE_LICENSE("GPL"); |