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Linux-2.6.12-rc2
[deliverable/linux.git] / drivers / media / video / cx88 / cx88-input.c
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1da177e4
LT		 1/*
2 * $Id: cx88-input.c,v 1.9 2005/03/04 09:12:23 kraxel Exp $
3 *
4 * Device driver for GPIO attached remote control interfaces
5 * on Conexant 2388x based TV/DVB cards.
6 *
7 * Copyright (c) 2003 Pavel Machek
8 * Copyright (c) 2004 Gerd Knorr
9 * Copyright (c) 2004 Chris Pascoe
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 */
25
26#include <linux/init.h>
27#include <linux/delay.h>
28#include <linux/input.h>
29#include <linux/pci.h>
30#include <linux/module.h>
31#include <linux/moduleparam.h>
32
33#include <media/ir-common.h>
34
35#include "cx88.h"
36
37/* ---------------------------------------------------------------------- */
38
39/* DigitalNow DNTV Live DVB-T Remote */
40static IR_KEYTAB_TYPE ir_codes_dntv_live_dvb_t[IR_KEYTAB_SIZE] = {
41 [ 0x00 ] = KEY_ESC, // 'go up a level?'
42 [ 0x01 ] = KEY_KP1, // '1'
43 [ 0x02 ] = KEY_KP2, // '2'
44 [ 0x03 ] = KEY_KP3, // '3'
45 [ 0x04 ] = KEY_KP4, // '4'
46 [ 0x05 ] = KEY_KP5, // '5'
47 [ 0x06 ] = KEY_KP6, // '6'
48 [ 0x07 ] = KEY_KP7, // '7'
49 [ 0x08 ] = KEY_KP8, // '8'
50 [ 0x09 ] = KEY_KP9, // '9'
51 [ 0x0a ] = KEY_KP0, // '0'
52 [ 0x0b ] = KEY_TUNER, // 'tv/fm'
53 [ 0x0c ] = KEY_SEARCH, // 'scan'
54 [ 0x0d ] = KEY_STOP, // 'stop'
55 [ 0x0e ] = KEY_PAUSE, // 'pause'
56 [ 0x0f ] = KEY_LIST, // 'source'
57
58 [ 0x10 ] = KEY_MUTE, // 'mute'
59 [ 0x11 ] = KEY_REWIND, // 'backward <<'
60 [ 0x12 ] = KEY_POWER, // 'power'
61 [ 0x13 ] = KEY_S, // 'snap'
62 [ 0x14 ] = KEY_AUDIO, // 'stereo'
63 [ 0x15 ] = KEY_CLEAR, // 'reset'
64 [ 0x16 ] = KEY_PLAY, // 'play'
65 [ 0x17 ] = KEY_ENTER, // 'enter'
66 [ 0x18 ] = KEY_ZOOM, // 'full screen'
67 [ 0x19 ] = KEY_FASTFORWARD, // 'forward >>'
68 [ 0x1a ] = KEY_CHANNELUP, // 'channel +'
69 [ 0x1b ] = KEY_VOLUMEUP, // 'volume +'
70 [ 0x1c ] = KEY_INFO, // 'preview'
71 [ 0x1d ] = KEY_RECORD, // 'record'
72 [ 0x1e ] = KEY_CHANNELDOWN, // 'channel -'
73 [ 0x1f ] = KEY_VOLUMEDOWN, // 'volume -'
74};
75
76/* ---------------------------------------------------------------------- */
77
78/* IO-DATA BCTV7E Remote */
79static IR_KEYTAB_TYPE ir_codes_iodata_bctv7e[IR_KEYTAB_SIZE] = {
80 [ 0x40 ] = KEY_TV, // TV
81 [ 0x20 ] = KEY_RADIO, // FM
82 [ 0x60 ] = KEY_EPG, // EPG
83 [ 0x00 ] = KEY_POWER, // power
84
85 [ 0x50 ] = KEY_KP1, // 1
86 [ 0x30 ] = KEY_KP2, // 2
87 [ 0x70 ] = KEY_KP3, // 3
88 [ 0x10 ] = KEY_L, // Live
89
90 [ 0x48 ] = KEY_KP4, // 4
91 [ 0x28 ] = KEY_KP5, // 5
92 [ 0x68 ] = KEY_KP6, // 6
93 [ 0x08 ] = KEY_T, // Time Shift
94
95 [ 0x58 ] = KEY_KP7, // 7
96 [ 0x38 ] = KEY_KP8, // 8
97 [ 0x78 ] = KEY_KP9, // 9
98 [ 0x18 ] = KEY_PLAYPAUSE, // Play
99
100 [ 0x44 ] = KEY_KP0, // 10
101 [ 0x24 ] = KEY_ENTER, // 11
102 [ 0x64 ] = KEY_ESC, // 12
103 [ 0x04 ] = KEY_M, // Multi
104
105 [ 0x54 ] = KEY_VIDEO, // VIDEO
106 [ 0x34 ] = KEY_CHANNELUP, // channel +
107 [ 0x74 ] = KEY_VOLUMEUP, // volume +
108 [ 0x14 ] = KEY_MUTE, // Mute
109
110 [ 0x4c ] = KEY_S, // SVIDEO
111 [ 0x2c ] = KEY_CHANNELDOWN, // channel -
112 [ 0x6c ] = KEY_VOLUMEDOWN, // volume -
113 [ 0x0c ] = KEY_ZOOM, // Zoom
114
115 [ 0x5c ] = KEY_PAUSE, // pause
116 [ 0x3c ] = KEY_C, // || (red)
117 [ 0x7c ] = KEY_RECORD, // recording
118 [ 0x1c ] = KEY_STOP, // stop
119
120 [ 0x41 ] = KEY_REWIND, // backward <<
121 [ 0x21 ] = KEY_PLAY, // play
122 [ 0x61 ] = KEY_FASTFORWARD, // forward >>
123 [ 0x01 ] = KEY_NEXT, // skip >|
124};
125
126/* ---------------------------------------------------------------------- */
127
128struct cx88_IR {
129 struct cx88_core *core;
130 struct input_dev input;
131 struct ir_input_state ir;
132 char name[32];
133 char phys[32];
134
135 /* sample from gpio pin 16 */
136 int sampling;
137 u32 samples[16];
138 int scount;
139 unsigned long release;
140
141 /* poll external decoder */
142 int polling;
143 struct work_struct work;
144 struct timer_list timer;
145 u32 gpio_addr;
146 u32 last_gpio;
147 u32 mask_keycode;
148 u32 mask_keydown;
149 u32 mask_keyup;
150};
151
152static int ir_debug = 0;
153module_param(ir_debug, int, 0644); /* debug level [IR] */
154MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
155
156#define ir_dprintk(fmt, arg...) if (ir_debug) \
157 printk(KERN_DEBUG "%s IR: " fmt , ir->core->name, ## arg)
158
159/* ---------------------------------------------------------------------- */
160
161static void cx88_ir_handle_key(struct cx88_IR *ir)
162{
163 struct cx88_core *core = ir->core;
164 u32 gpio, data;
165
166 /* read gpio value */
167 gpio = cx_read(ir->gpio_addr);
168 if (ir->polling) {
169 if (ir->last_gpio == gpio)
170 return;
171 ir->last_gpio = gpio;
172 }
173
174 /* extract data */
175 data = ir_extract_bits(gpio, ir->mask_keycode);
176 ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
177 gpio, data,
178 ir->polling ? "poll" : "irq",
179 (gpio & ir->mask_keydown) ? " down" : "",
180 (gpio & ir->mask_keyup) ? " up" : "");
181
182 if (ir->mask_keydown) {
183 /* bit set on keydown */
184 if (gpio & ir->mask_keydown) {
185 ir_input_keydown(&ir->input,&ir->ir,data,data);
186 } else {
187 ir_input_nokey(&ir->input,&ir->ir);
188 }
189
190 } else if (ir->mask_keyup) {
191 /* bit cleared on keydown */
192 if (0 == (gpio & ir->mask_keyup)) {
193 ir_input_keydown(&ir->input,&ir->ir,data,data);
194 } else {
195 ir_input_nokey(&ir->input,&ir->ir);
196 }
197
198 } else {
199 /* can't distinguish keydown/up :-/ */
200 ir_input_keydown(&ir->input,&ir->ir,data,data);
201 ir_input_nokey(&ir->input,&ir->ir);
202 }
203}
204
205static void ir_timer(unsigned long data)
206{
207 struct cx88_IR *ir = (struct cx88_IR*)data;
208
209 schedule_work(&ir->work);
210}
211
212static void cx88_ir_work(void *data)
213{
214 struct cx88_IR *ir = data;
215 unsigned long timeout;
216
217 cx88_ir_handle_key(ir);
218 timeout = jiffies + (ir->polling * HZ / 1000);
219 mod_timer(&ir->timer, timeout);
220}
221
222/* ---------------------------------------------------------------------- */
223
224int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
225{
226 struct cx88_IR *ir;
227 IR_KEYTAB_TYPE *ir_codes = NULL;
228 int ir_type = IR_TYPE_OTHER;
229
230 ir = kmalloc(sizeof(*ir),GFP_KERNEL);
231 if (NULL == ir)
232 return -ENOMEM;
233 memset(ir,0,sizeof(*ir));
234
235 /* detect & configure */
236 switch (core->board) {
237 case CX88_BOARD_DNTV_LIVE_DVB_T:
238 ir_codes = ir_codes_dntv_live_dvb_t;
239 ir->gpio_addr = MO_GP1_IO;
240 ir->mask_keycode = 0x1f;
241 ir->mask_keyup = 0x60;
242 ir->polling = 50; // ms
243 break;
244 case CX88_BOARD_HAUPPAUGE:
245 case CX88_BOARD_HAUPPAUGE_DVB_T1:
246 ir_codes = ir_codes_hauppauge_new;
247 ir_type = IR_TYPE_RC5;
248 ir->sampling = 1;
249 break;
250 case CX88_BOARD_WINFAST2000XP_EXPERT:
251 ir_codes = ir_codes_winfast;
252 ir->gpio_addr = MO_GP0_IO;
253 ir->mask_keycode = 0x8f8;
254 ir->mask_keyup = 0x100;
255 ir->polling = 1; // ms
256 break;
257 case CX88_BOARD_IODATA_GVBCTV7E:
258 ir_codes = ir_codes_iodata_bctv7e;
259 ir->gpio_addr = MO_GP0_IO;
260 ir->mask_keycode = 0xfd;
261 ir->mask_keydown = 0x02;
262 ir->polling = 5; // ms
263 break;
264 }
265 if (NULL == ir_codes) {
266 kfree(ir);
267 return -ENODEV;
268 }
269
270 /* init input device */
271 snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)",
272 cx88_boards[core->board].name);
273 snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
274 pci_name(pci));
275
276 ir_input_init(&ir->input, &ir->ir, ir_type, ir_codes);
277 ir->input.name = ir->name;
278 ir->input.phys = ir->phys;
279 ir->input.id.bustype = BUS_PCI;
280 ir->input.id.version = 1;
281 if (pci->subsystem_vendor) {
282 ir->input.id.vendor = pci->subsystem_vendor;
283 ir->input.id.product = pci->subsystem_device;
284 } else {
285 ir->input.id.vendor = pci->vendor;
286 ir->input.id.product = pci->device;
287 }
288
289 /* record handles to ourself */
290 ir->core = core;
291 core->ir = ir;
292
293 if (ir->polling) {
294 INIT_WORK(&ir->work, cx88_ir_work, ir);
295 init_timer(&ir->timer);
296 ir->timer.function = ir_timer;
297 ir->timer.data = (unsigned long)ir;
298 schedule_work(&ir->work);
299 }
300 if (ir->sampling) {
301 core->pci_irqmask |= (1<<18); // IR_SMP_INT
302 cx_write(MO_DDS_IO, 0xa80a80); // 4 kHz sample rate
303 cx_write(MO_DDSCFG_IO, 0x5); // enable
304 }
305
306 /* all done */
307 input_register_device(&ir->input);
308 printk("%s: registered IR remote control\n", core->name);
309
310 return 0;
311}
312
313int cx88_ir_fini(struct cx88_core *core)
314{
315 struct cx88_IR *ir = core->ir;
316
317 /* skip detach on non attached boards */
318 if (NULL == ir)
319 return 0;
320
321 if (ir->polling) {
322 del_timer(&ir->timer);
323 flush_scheduled_work();
324 }
325
326 input_unregister_device(&ir->input);
327 kfree(ir);
328
329 /* done */
330 core->ir = NULL;
331 return 0;
332}
333
334/* ---------------------------------------------------------------------- */
335
336void cx88_ir_irq(struct cx88_core *core)
337{
338 struct cx88_IR *ir = core->ir;
339 u32 samples,rc5;
340 int i;
341
342 if (NULL == ir)
343 return;
344 if (!ir->sampling)
345 return;
346
347 samples = cx_read(MO_SAMPLE_IO);
348 if (0 != samples && 0xffffffff != samples) {
349 /* record sample data */
350 if (ir->scount < ARRAY_SIZE(ir->samples))
351 ir->samples[ir->scount++] = samples;
352 return;
353 }
354 if (!ir->scount) {
355 /* nothing to sample */
356 if (ir->ir.keypressed && time_after(jiffies,ir->release))
357 ir_input_nokey(&ir->input,&ir->ir);
358 return;
359 }
360
361 /* have a complete sample */
362 if (ir->scount < ARRAY_SIZE(ir->samples))
363 ir->samples[ir->scount++] = samples;
364 for (i = 0; i < ir->scount; i++)
365 ir->samples[i] = ~ir->samples[i];
366 if (ir_debug)
367 ir_dump_samples(ir->samples,ir->scount);
368
369 /* decode it */
370 switch (core->board) {
371 case CX88_BOARD_HAUPPAUGE:
372 case CX88_BOARD_HAUPPAUGE_DVB_T1:
373 rc5 = ir_decode_biphase(ir->samples,ir->scount,5,7);
374 ir_dprintk("biphase decoded: %x\n",rc5);
375 if ((rc5 & 0xfffff000) != 0x3000)
376 break;
377 ir_input_keydown(&ir->input, &ir->ir, rc5 & 0x3f, rc5);
378 ir->release = jiffies + msecs_to_jiffies(120);
379 break;
380 }
381
382 ir->scount = 0;
383 return;
384}
385
386/* ---------------------------------------------------------------------- */
387
388MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
389MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
390MODULE_LICENSE("GPL");
391
392/*
393 * Local variables:
394 * c-basic-offset: 8
395 * End:
396 */
Linux kernel - Deliverables
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