V4L/DVB (9222): S2API: Add Multiple-frontend on a single adapter support.
[linux-2.6.git] / drivers / media / video / saa7110.c
1 /*
2  * saa7110 - Philips SAA7110(A) video decoder driver
3  *
4  * Copyright (C) 1998 Pauline Middelink <middelin@polyware.nl>
5  *
6  * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
7  * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
8  *    - some corrections for Pinnacle Systems Inc. DC10plus card.
9  *
10  * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
11  *    - moved over to linux>=2.4.x i2c protocol (1/1/2003)
12  *
13  * This program is free software; you can redistribute it and/or modify
14  * it under the terms of the GNU General Public License as published by
15  * the Free Software Foundation; either version 2 of the License, or
16  * (at your option) any later version.
17  *
18  * This program is distributed in the hope that it will be useful,
19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21  * GNU General Public License for more details.
22  *
23  * You should have received a copy of the GNU General Public License
24  * along with this program; if not, write to the Free Software
25  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26  */
27
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/types.h>
31 #include <linux/delay.h>
32 #include <linux/slab.h>
33 #include <linux/wait.h>
34 #include <asm/uaccess.h>
35 #include <linux/i2c.h>
36 #include <linux/videodev.h>
37 #include <linux/video_decoder.h>
38 #include <media/v4l2-common.h>
39 #include <media/v4l2-i2c-drv-legacy.h>
40
41 MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
42 MODULE_AUTHOR("Pauline Middelink");
43 MODULE_LICENSE("GPL");
44
45 static int debug;
46 module_param(debug, int, 0);
47 MODULE_PARM_DESC(debug, "Debug level (0-1)");
48
49 #define SAA7110_MAX_INPUT       9       /* 6 CVBS, 3 SVHS */
50 #define SAA7110_MAX_OUTPUT      0       /* its a decoder only */
51
52 #define SAA7110_NR_REG          0x35
53
54 struct saa7110 {
55         u8 reg[SAA7110_NR_REG];
56
57         int norm;
58         int input;
59         int enable;
60         int bright;
61         int contrast;
62         int hue;
63         int sat;
64
65         wait_queue_head_t wq;
66 };
67
68 /* ----------------------------------------------------------------------- */
69 /* I2C support functions                                                   */
70 /* ----------------------------------------------------------------------- */
71
72 static int saa7110_write(struct i2c_client *client, u8 reg, u8 value)
73 {
74         struct saa7110 *decoder = i2c_get_clientdata(client);
75
76         decoder->reg[reg] = value;
77         return i2c_smbus_write_byte_data(client, reg, value);
78 }
79
80 static int saa7110_write_block(struct i2c_client *client, const u8 *data, unsigned int len)
81 {
82         int ret = -1;
83         u8 reg = *data;         /* first register to write to */
84
85         /* Sanity check */
86         if (reg + (len - 1) > SAA7110_NR_REG)
87                 return ret;
88
89         /* the saa7110 has an autoincrement function, use it if
90          * the adapter understands raw I2C */
91         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
92                 struct saa7110 *decoder = i2c_get_clientdata(client);
93
94                 ret = i2c_master_send(client, data, len);
95
96                 /* Cache the written data */
97                 memcpy(decoder->reg + reg, data + 1, len - 1);
98         } else {
99                 for (++data, --len; len; len--) {
100                         ret = saa7110_write(client, reg++, *data++);
101                         if (ret < 0)
102                                 break;
103                 }
104         }
105
106         return ret;
107 }
108
109 static inline int saa7110_read(struct i2c_client *client)
110 {
111         return i2c_smbus_read_byte(client);
112 }
113
114 /* ----------------------------------------------------------------------- */
115 /* SAA7110 functions                                                       */
116 /* ----------------------------------------------------------------------- */
117
118 #define FRESP_06H_COMPST 0x03   //0x13
119 #define FRESP_06H_SVIDEO 0x83   //0xC0
120
121
122 static int saa7110_selmux(struct i2c_client *client, int chan)
123 {
124         static const unsigned char modes[9][8] = {
125                 /* mode 0 */
126                 {FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
127                               0x44, 0x75, 0x16},
128                 /* mode 1 */
129                 {FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
130                               0x44, 0x75, 0x16},
131                 /* mode 2 */
132                 {FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
133                               0x60, 0xB5, 0x05},
134                 /* mode 3 */
135                 {FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
136                               0x60, 0xB5, 0x05},
137                 /* mode 4 */
138                 {FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
139                               0x60, 0xB5, 0x03},
140                 /* mode 5 */
141                 {FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
142                               0x60, 0xB5, 0x03},
143                 /* mode 6 */
144                 {FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
145                               0x44, 0x75, 0x12},
146                 /* mode 7 */
147                 {FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
148                               0x60, 0xB5, 0x14},
149                 /* mode 8 */
150                 {FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
151                               0x44, 0x75, 0x21}
152         };
153         struct saa7110 *decoder = i2c_get_clientdata(client);
154         const unsigned char *ptr = modes[chan];
155
156         saa7110_write(client, 0x06, ptr[0]);    /* Luminance control    */
157         saa7110_write(client, 0x20, ptr[1]);    /* Analog Control #1    */
158         saa7110_write(client, 0x21, ptr[2]);    /* Analog Control #2    */
159         saa7110_write(client, 0x22, ptr[3]);    /* Mixer Control #1     */
160         saa7110_write(client, 0x2C, ptr[4]);    /* Mixer Control #2     */
161         saa7110_write(client, 0x30, ptr[5]);    /* ADCs gain control    */
162         saa7110_write(client, 0x31, ptr[6]);    /* Mixer Control #3     */
163         saa7110_write(client, 0x21, ptr[7]);    /* Analog Control #2    */
164         decoder->input = chan;
165
166         return 0;
167 }
168
169 static const unsigned char initseq[1 + SAA7110_NR_REG] = {
170         0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
171         /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
172         /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
173         /* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
174         /* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
175         /* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
176         /* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
177 };
178
179 static int determine_norm(struct i2c_client *client)
180 {
181         DEFINE_WAIT(wait);
182         struct saa7110 *decoder = i2c_get_clientdata(client);
183         int status;
184
185         /* mode changed, start automatic detection */
186         saa7110_write_block(client, initseq, sizeof(initseq));
187         saa7110_selmux(client, decoder->input);
188         prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
189         schedule_timeout(msecs_to_jiffies(250));
190         finish_wait(&decoder->wq, &wait);
191         status = saa7110_read(client);
192         if (status & 0x40) {
193                 v4l_dbg(1, debug, client, "status=0x%02x (no signal)\n", status);
194                 return decoder->norm;   // no change
195         }
196         if ((status & 3) == 0) {
197                 saa7110_write(client, 0x06, 0x83);
198                 if (status & 0x20) {
199                         v4l_dbg(1, debug, client, "status=0x%02x (NTSC/no color)\n", status);
200                         //saa7110_write(client,0x2E,0x81);
201                         return VIDEO_MODE_NTSC;
202                 }
203                 v4l_dbg(1, debug, client, "status=0x%02x (PAL/no color)\n", status);
204                 //saa7110_write(client,0x2E,0x9A);
205                 return VIDEO_MODE_PAL;
206         }
207         //saa7110_write(client,0x06,0x03);
208         if (status & 0x20) {    /* 60Hz */
209                 v4l_dbg(1, debug, client, "status=0x%02x (NTSC)\n", status);
210                 saa7110_write(client, 0x0D, 0x86);
211                 saa7110_write(client, 0x0F, 0x50);
212                 saa7110_write(client, 0x11, 0x2C);
213                 //saa7110_write(client,0x2E,0x81);
214                 return VIDEO_MODE_NTSC;
215         }
216
217         /* 50Hz -> PAL/SECAM */
218         saa7110_write(client, 0x0D, 0x86);
219         saa7110_write(client, 0x0F, 0x10);
220         saa7110_write(client, 0x11, 0x59);
221         //saa7110_write(client,0x2E,0x9A);
222
223         prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
224         schedule_timeout(msecs_to_jiffies(250));
225         finish_wait(&decoder->wq, &wait);
226
227         status = saa7110_read(client);
228         if ((status & 0x03) == 0x01) {
229                 v4l_dbg(1, debug, client, "status=0x%02x (SECAM)\n", status);
230                 saa7110_write(client, 0x0D, 0x87);
231                 return VIDEO_MODE_SECAM;
232         }
233         v4l_dbg(1, debug, client, "status=0x%02x (PAL)\n", status);
234         return VIDEO_MODE_PAL;
235 }
236
237 static int
238 saa7110_command (struct i2c_client *client,
239                  unsigned int       cmd,
240                  void              *arg)
241 {
242         struct saa7110 *decoder = i2c_get_clientdata(client);
243         int v;
244
245         switch (cmd) {
246         case 0:
247                 //saa7110_write_block(client, initseq, sizeof(initseq));
248                 break;
249
250         case DECODER_GET_CAPABILITIES:
251         {
252                 struct video_decoder_capability *dc = arg;
253
254                 dc->flags =
255                     VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC |
256                     VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO;
257                 dc->inputs = SAA7110_MAX_INPUT;
258                 dc->outputs = SAA7110_MAX_OUTPUT;
259                 break;
260         }
261
262         case DECODER_GET_STATUS:
263         {
264                 int status;
265                 int res = 0;
266
267                 status = saa7110_read(client);
268                 v4l_dbg(1, debug, client, "status=0x%02x norm=%d\n",
269                                status, decoder->norm);
270                 if (!(status & 0x40))
271                         res |= DECODER_STATUS_GOOD;
272                 if (status & 0x03)
273                         res |= DECODER_STATUS_COLOR;
274
275                 switch (decoder->norm) {
276                 case VIDEO_MODE_NTSC:
277                         res |= DECODER_STATUS_NTSC;
278                         break;
279                 case VIDEO_MODE_PAL:
280                         res |= DECODER_STATUS_PAL;
281                         break;
282                 case VIDEO_MODE_SECAM:
283                         res |= DECODER_STATUS_SECAM;
284                         break;
285                 }
286                 *(int *) arg = res;
287                 break;
288         }
289
290         case DECODER_SET_NORM:
291                 v = *(int *) arg;
292                 if (decoder->norm != v) {
293                         decoder->norm = v;
294                         //saa7110_write(client, 0x06, 0x03);
295                         switch (v) {
296                         case VIDEO_MODE_NTSC:
297                                 saa7110_write(client, 0x0D, 0x86);
298                                 saa7110_write(client, 0x0F, 0x50);
299                                 saa7110_write(client, 0x11, 0x2C);
300                                 //saa7110_write(client, 0x2E, 0x81);
301                                 v4l_dbg(1, debug, client, "switched to NTSC\n");
302                                 break;
303                         case VIDEO_MODE_PAL:
304                                 saa7110_write(client, 0x0D, 0x86);
305                                 saa7110_write(client, 0x0F, 0x10);
306                                 saa7110_write(client, 0x11, 0x59);
307                                 //saa7110_write(client, 0x2E, 0x9A);
308                                 v4l_dbg(1, debug, client, "switched to PAL\n");
309                                 break;
310                         case VIDEO_MODE_SECAM:
311                                 saa7110_write(client, 0x0D, 0x87);
312                                 saa7110_write(client, 0x0F, 0x10);
313                                 saa7110_write(client, 0x11, 0x59);
314                                 //saa7110_write(client, 0x2E, 0x9A);
315                                 v4l_dbg(1, debug, client, "switched to SECAM\n");
316                                 break;
317                         case VIDEO_MODE_AUTO:
318                                 v4l_dbg(1, debug, client, "switched to AUTO\n");
319                                 decoder->norm = determine_norm(client);
320                                 *(int *) arg = decoder->norm;
321                                 break;
322                         default:
323                                 return -EPERM;
324                         }
325                 }
326                 break;
327
328         case DECODER_SET_INPUT:
329                 v = *(int *) arg;
330                 if (v < 0 || v > SAA7110_MAX_INPUT) {
331                         v4l_dbg(1, debug, client, "input=%d not available\n", v);
332                         return -EINVAL;
333                 }
334                 if (decoder->input != v) {
335                         saa7110_selmux(client, v);
336                         v4l_dbg(1, debug, client, "switched to input=%d\n", v);
337                 }
338                 break;
339
340         case DECODER_SET_OUTPUT:
341                 v = *(int *) arg;
342                 /* not much choice of outputs */
343                 if (v != 0)
344                         return -EINVAL;
345                 break;
346
347         case DECODER_ENABLE_OUTPUT:
348                 v = *(int *) arg;
349                 if (decoder->enable != v) {
350                         decoder->enable = v;
351                         saa7110_write(client, 0x0E, v ? 0x18 : 0x80);
352                         v4l_dbg(1, debug, client, "YUV %s\n", v ? "on" : "off");
353                 }
354                 break;
355
356         case DECODER_SET_PICTURE:
357         {
358                 struct video_picture *pic = arg;
359
360                 if (decoder->bright != pic->brightness) {
361                         /* We want 0 to 255 we get 0-65535 */
362                         decoder->bright = pic->brightness;
363                         saa7110_write(client, 0x19, decoder->bright >> 8);
364                 }
365                 if (decoder->contrast != pic->contrast) {
366                         /* We want 0 to 127 we get 0-65535 */
367                         decoder->contrast = pic->contrast;
368                         saa7110_write(client, 0x13,
369                                       decoder->contrast >> 9);
370                 }
371                 if (decoder->sat != pic->colour) {
372                         /* We want 0 to 127 we get 0-65535 */
373                         decoder->sat = pic->colour;
374                         saa7110_write(client, 0x12, decoder->sat >> 9);
375                 }
376                 if (decoder->hue != pic->hue) {
377                         /* We want -128 to 127 we get 0-65535 */
378                         decoder->hue = pic->hue;
379                         saa7110_write(client, 0x07,
380                                       (decoder->hue >> 8) - 128);
381                 }
382                 break;
383         }
384
385         case DECODER_DUMP:
386                 if (!debug)
387                         break;
388                 for (v = 0; v < SAA7110_NR_REG; v += 16) {
389                         int j;
390                         v4l_dbg(1, debug, client, "%02x:", v);
391                         for (j = 0; j < 16 && v + j < SAA7110_NR_REG; j++)
392                                 printk(KERN_CONT " %02x", decoder->reg[v + j]);
393                         printk(KERN_CONT "\n");
394                 }
395                 break;
396
397         default:
398                 v4l_dbg(1, debug, client, "unknown command %08x\n", cmd);
399                 return -EINVAL;
400         }
401         return 0;
402 }
403
404 /* ----------------------------------------------------------------------- */
405
406 /*
407  * Generic i2c probe
408  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
409  */
410
411 static unsigned short normal_i2c[] = { 0x9c >> 1, 0x9e >> 1, I2C_CLIENT_END };
412
413 I2C_CLIENT_INSMOD;
414
415 static int saa7110_probe(struct i2c_client *client,
416                         const struct i2c_device_id *id)
417 {
418         struct saa7110 *decoder;
419         int rv;
420
421         /* Check if the adapter supports the needed features */
422         if (!i2c_check_functionality(client->adapter,
423                 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
424                 return -ENODEV;
425
426         v4l_info(client, "chip found @ 0x%x (%s)\n",
427                         client->addr << 1, client->adapter->name);
428
429         decoder = kzalloc(sizeof(struct saa7110), GFP_KERNEL);
430         if (!decoder)
431                 return -ENOMEM;
432         decoder->norm = VIDEO_MODE_PAL;
433         decoder->input = 0;
434         decoder->enable = 1;
435         decoder->bright = 32768;
436         decoder->contrast = 32768;
437         decoder->hue = 32768;
438         decoder->sat = 32768;
439         init_waitqueue_head(&decoder->wq);
440         i2c_set_clientdata(client, decoder);
441
442         rv = saa7110_write_block(client, initseq, sizeof(initseq));
443         if (rv < 0) {
444                 v4l_dbg(1, debug, client, "init status %d\n", rv);
445         } else {
446                 int ver, status;
447                 saa7110_write(client, 0x21, 0x10);
448                 saa7110_write(client, 0x0e, 0x18);
449                 saa7110_write(client, 0x0D, 0x04);
450                 ver = saa7110_read(client);
451                 saa7110_write(client, 0x0D, 0x06);
452                 //mdelay(150);
453                 status = saa7110_read(client);
454                 v4l_dbg(1, debug, client, "version %x, status=0x%02x\n",
455                                ver, status);
456                 saa7110_write(client, 0x0D, 0x86);
457                 saa7110_write(client, 0x0F, 0x10);
458                 saa7110_write(client, 0x11, 0x59);
459                 //saa7110_write(client, 0x2E, 0x9A);
460         }
461
462         //saa7110_selmux(client,0);
463         //determine_norm(client);
464         /* setup and implicit mode 0 select has been performed */
465
466         return 0;
467 }
468
469 static int saa7110_remove(struct i2c_client *client)
470 {
471         kfree(i2c_get_clientdata(client));
472         return 0;
473 }
474
475 /* ----------------------------------------------------------------------- */
476
477 static const struct i2c_device_id saa7110_id[] = {
478         { "saa7110", 0 },
479         { }
480 };
481 MODULE_DEVICE_TABLE(i2c, saa7110_id);
482
483 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
484         .name = "saa7110",
485         .driverid = I2C_DRIVERID_SAA7110,
486         .command = saa7110_command,
487         .probe = saa7110_probe,
488         .remove = saa7110_remove,
489         .id_table = saa7110_id,
490 };