977de63fded0f83c856b8369cc5c6f7974a665de
[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/videodev2.h>
37 #include <media/v4l2-device.h>
38 #include <media/v4l2-chip-ident.h>
39 #include <media/v4l2-i2c-drv.h>
40
41 MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
42 MODULE_AUTHOR("Pauline Middelink");
43 MODULE_LICENSE("GPL");
44
45
46 static int debug;
47 module_param(debug, int, 0);
48 MODULE_PARM_DESC(debug, "Debug level (0-1)");
49
50 #define SAA7110_MAX_INPUT       9       /* 6 CVBS, 3 SVHS */
51 #define SAA7110_MAX_OUTPUT      1       /* 1 YUV */
52
53 #define SAA7110_NR_REG          0x35
54
55 struct saa7110 {
56         struct v4l2_subdev sd;
57         u8 reg[SAA7110_NR_REG];
58
59         v4l2_std_id norm;
60         int input;
61         int enable;
62         int bright;
63         int contrast;
64         int hue;
65         int sat;
66
67         wait_queue_head_t wq;
68 };
69
70 static inline struct saa7110 *to_saa7110(struct v4l2_subdev *sd)
71 {
72         return container_of(sd, struct saa7110, sd);
73 }
74
75 /* ----------------------------------------------------------------------- */
76 /* I2C support functions                                                   */
77 /* ----------------------------------------------------------------------- */
78
79 static int saa7110_write(struct v4l2_subdev *sd, u8 reg, u8 value)
80 {
81         struct i2c_client *client = v4l2_get_subdevdata(sd);
82         struct saa7110 *decoder = to_saa7110(sd);
83
84         decoder->reg[reg] = value;
85         return i2c_smbus_write_byte_data(client, reg, value);
86 }
87
88 static int saa7110_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len)
89 {
90         struct i2c_client *client = v4l2_get_subdevdata(sd);
91         struct saa7110 *decoder = to_saa7110(sd);
92         int ret = -1;
93         u8 reg = *data;         /* first register to write to */
94
95         /* Sanity check */
96         if (reg + (len - 1) > SAA7110_NR_REG)
97                 return ret;
98
99         /* the saa7110 has an autoincrement function, use it if
100          * the adapter understands raw I2C */
101         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
102                 ret = i2c_master_send(client, data, len);
103
104                 /* Cache the written data */
105                 memcpy(decoder->reg + reg, data + 1, len - 1);
106         } else {
107                 for (++data, --len; len; len--) {
108                         ret = saa7110_write(sd, reg++, *data++);
109                         if (ret < 0)
110                                 break;
111                 }
112         }
113
114         return ret;
115 }
116
117 static inline int saa7110_read(struct v4l2_subdev *sd)
118 {
119         struct i2c_client *client = v4l2_get_subdevdata(sd);
120
121         return i2c_smbus_read_byte(client);
122 }
123
124 /* ----------------------------------------------------------------------- */
125 /* SAA7110 functions                                                       */
126 /* ----------------------------------------------------------------------- */
127
128 #define FRESP_06H_COMPST 0x03   /*0x13*/
129 #define FRESP_06H_SVIDEO 0x83   /*0xC0*/
130
131
132 static int saa7110_selmux(struct v4l2_subdev *sd, int chan)
133 {
134         static const unsigned char modes[9][8] = {
135                 /* mode 0 */
136                 {FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
137                               0x44, 0x75, 0x16},
138                 /* mode 1 */
139                 {FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
140                               0x44, 0x75, 0x16},
141                 /* mode 2 */
142                 {FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
143                               0x60, 0xB5, 0x05},
144                 /* mode 3 */
145                 {FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
146                               0x60, 0xB5, 0x05},
147                 /* mode 4 */
148                 {FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
149                               0x60, 0xB5, 0x03},
150                 /* mode 5 */
151                 {FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
152                               0x60, 0xB5, 0x03},
153                 /* mode 6 */
154                 {FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
155                               0x44, 0x75, 0x12},
156                 /* mode 7 */
157                 {FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
158                               0x60, 0xB5, 0x14},
159                 /* mode 8 */
160                 {FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
161                               0x44, 0x75, 0x21}
162         };
163         struct saa7110 *decoder = to_saa7110(sd);
164         const unsigned char *ptr = modes[chan];
165
166         saa7110_write(sd, 0x06, ptr[0]);        /* Luminance control    */
167         saa7110_write(sd, 0x20, ptr[1]);        /* Analog Control #1    */
168         saa7110_write(sd, 0x21, ptr[2]);        /* Analog Control #2    */
169         saa7110_write(sd, 0x22, ptr[3]);        /* Mixer Control #1     */
170         saa7110_write(sd, 0x2C, ptr[4]);        /* Mixer Control #2     */
171         saa7110_write(sd, 0x30, ptr[5]);        /* ADCs gain control    */
172         saa7110_write(sd, 0x31, ptr[6]);        /* Mixer Control #3     */
173         saa7110_write(sd, 0x21, ptr[7]);        /* Analog Control #2    */
174         decoder->input = chan;
175
176         return 0;
177 }
178
179 static const unsigned char initseq[1 + SAA7110_NR_REG] = {
180         0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
181         /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
182         /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
183         /* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
184         /* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
185         /* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
186         /* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
187 };
188
189 static v4l2_std_id determine_norm(struct v4l2_subdev *sd)
190 {
191         DEFINE_WAIT(wait);
192         struct saa7110 *decoder = to_saa7110(sd);
193         int status;
194
195         /* mode changed, start automatic detection */
196         saa7110_write_block(sd, initseq, sizeof(initseq));
197         saa7110_selmux(sd, decoder->input);
198         prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
199         schedule_timeout(msecs_to_jiffies(250));
200         finish_wait(&decoder->wq, &wait);
201         status = saa7110_read(sd);
202         if (status & 0x40) {
203                 v4l2_dbg(1, debug, sd, "status=0x%02x (no signal)\n", status);
204                 return decoder->norm;   /* no change*/
205         }
206         if ((status & 3) == 0) {
207                 saa7110_write(sd, 0x06, 0x83);
208                 if (status & 0x20) {
209                         v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC/no color)\n", status);
210                         /*saa7110_write(sd,0x2E,0x81);*/
211                         return V4L2_STD_NTSC;
212                 }
213                 v4l2_dbg(1, debug, sd, "status=0x%02x (PAL/no color)\n", status);
214                 /*saa7110_write(sd,0x2E,0x9A);*/
215                 return V4L2_STD_PAL;
216         }
217         /*saa7110_write(sd,0x06,0x03);*/
218         if (status & 0x20) {    /* 60Hz */
219                 v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC)\n", status);
220                 saa7110_write(sd, 0x0D, 0x86);
221                 saa7110_write(sd, 0x0F, 0x50);
222                 saa7110_write(sd, 0x11, 0x2C);
223                 /*saa7110_write(sd,0x2E,0x81);*/
224                 return V4L2_STD_NTSC;
225         }
226
227         /* 50Hz -> PAL/SECAM */
228         saa7110_write(sd, 0x0D, 0x86);
229         saa7110_write(sd, 0x0F, 0x10);
230         saa7110_write(sd, 0x11, 0x59);
231         /*saa7110_write(sd,0x2E,0x9A);*/
232
233         prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
234         schedule_timeout(msecs_to_jiffies(250));
235         finish_wait(&decoder->wq, &wait);
236
237         status = saa7110_read(sd);
238         if ((status & 0x03) == 0x01) {
239                 v4l2_dbg(1, debug, sd, "status=0x%02x (SECAM)\n", status);
240                 saa7110_write(sd, 0x0D, 0x87);
241                 return V4L2_STD_SECAM;
242         }
243         v4l2_dbg(1, debug, sd, "status=0x%02x (PAL)\n", status);
244         return V4L2_STD_PAL;
245 }
246
247 static int saa7110_g_input_status(struct v4l2_subdev *sd, u32 *pstatus)
248 {
249         struct saa7110 *decoder = to_saa7110(sd);
250         int res = V4L2_IN_ST_NO_SIGNAL;
251         int status = saa7110_read(sd);
252
253         v4l2_dbg(1, debug, sd, "status=0x%02x norm=%llx\n",
254                        status, decoder->norm);
255         if (!(status & 0x40))
256                 res = 0;
257         if (!(status & 0x03))
258                 res |= V4L2_IN_ST_NO_COLOR;
259
260         *pstatus = res;
261         return 0;
262 }
263
264 static int saa7110_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
265 {
266         *(v4l2_std_id *)std = determine_norm(sd);
267         return 0;
268 }
269
270 static int saa7110_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
271 {
272         struct saa7110 *decoder = to_saa7110(sd);
273
274         if (decoder->norm != std) {
275                 decoder->norm = std;
276                 /*saa7110_write(sd, 0x06, 0x03);*/
277                 if (std & V4L2_STD_NTSC) {
278                         saa7110_write(sd, 0x0D, 0x86);
279                         saa7110_write(sd, 0x0F, 0x50);
280                         saa7110_write(sd, 0x11, 0x2C);
281                         /*saa7110_write(sd, 0x2E, 0x81);*/
282                         v4l2_dbg(1, debug, sd, "switched to NTSC\n");
283                 } else if (std & V4L2_STD_PAL) {
284                         saa7110_write(sd, 0x0D, 0x86);
285                         saa7110_write(sd, 0x0F, 0x10);
286                         saa7110_write(sd, 0x11, 0x59);
287                         /*saa7110_write(sd, 0x2E, 0x9A);*/
288                         v4l2_dbg(1, debug, sd, "switched to PAL\n");
289                 } else if (std & V4L2_STD_SECAM) {
290                         saa7110_write(sd, 0x0D, 0x87);
291                         saa7110_write(sd, 0x0F, 0x10);
292                         saa7110_write(sd, 0x11, 0x59);
293                         /*saa7110_write(sd, 0x2E, 0x9A);*/
294                         v4l2_dbg(1, debug, sd, "switched to SECAM\n");
295                 } else {
296                         return -EINVAL;
297                 }
298         }
299         return 0;
300 }
301
302 static int saa7110_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
303 {
304         struct saa7110 *decoder = to_saa7110(sd);
305
306         if (route->input < 0 || route->input >= SAA7110_MAX_INPUT) {
307                 v4l2_dbg(1, debug, sd, "input=%d not available\n", route->input);
308                 return -EINVAL;
309         }
310         if (decoder->input != route->input) {
311                 saa7110_selmux(sd, route->input);
312                 v4l2_dbg(1, debug, sd, "switched to input=%d\n", route->input);
313         }
314         return 0;
315 }
316
317 static int saa7110_s_stream(struct v4l2_subdev *sd, int enable)
318 {
319         struct saa7110 *decoder = to_saa7110(sd);
320
321         if (decoder->enable != enable) {
322                 decoder->enable = enable;
323                 saa7110_write(sd, 0x0E, enable ? 0x18 : 0x80);
324                 v4l2_dbg(1, debug, sd, "YUV %s\n", enable ? "on" : "off");
325         }
326         return 0;
327 }
328
329 static int saa7110_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
330 {
331         switch (qc->id) {
332         case V4L2_CID_BRIGHTNESS:
333                 return v4l2_ctrl_query_fill(qc, 0, 255, 1, 128);
334         case V4L2_CID_CONTRAST:
335         case V4L2_CID_SATURATION:
336                 return v4l2_ctrl_query_fill(qc, 0, 127, 1, 64);
337         case V4L2_CID_HUE:
338                 return v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
339         default:
340                 return -EINVAL;
341         }
342         return 0;
343 }
344
345 static int saa7110_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
346 {
347         struct saa7110 *decoder = to_saa7110(sd);
348
349         switch (ctrl->id) {
350         case V4L2_CID_BRIGHTNESS:
351                 ctrl->value = decoder->bright;
352                 break;
353         case V4L2_CID_CONTRAST:
354                 ctrl->value = decoder->contrast;
355                 break;
356         case V4L2_CID_SATURATION:
357                 ctrl->value = decoder->sat;
358                 break;
359         case V4L2_CID_HUE:
360                 ctrl->value = decoder->hue;
361                 break;
362         default:
363                 return -EINVAL;
364         }
365         return 0;
366 }
367
368 static int saa7110_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
369 {
370         struct saa7110 *decoder = to_saa7110(sd);
371
372         switch (ctrl->id) {
373         case V4L2_CID_BRIGHTNESS:
374                 if (decoder->bright != ctrl->value) {
375                         decoder->bright = ctrl->value;
376                         saa7110_write(sd, 0x19, decoder->bright);
377                 }
378                 break;
379         case V4L2_CID_CONTRAST:
380                 if (decoder->contrast != ctrl->value) {
381                         decoder->contrast = ctrl->value;
382                         saa7110_write(sd, 0x13, decoder->contrast);
383                 }
384                 break;
385         case V4L2_CID_SATURATION:
386                 if (decoder->sat != ctrl->value) {
387                         decoder->sat = ctrl->value;
388                         saa7110_write(sd, 0x12, decoder->sat);
389                 }
390                 break;
391         case V4L2_CID_HUE:
392                 if (decoder->hue != ctrl->value) {
393                         decoder->hue = ctrl->value;
394                         saa7110_write(sd, 0x07, decoder->hue);
395                 }
396                 break;
397         default:
398                 return -EINVAL;
399         }
400         return 0;
401 }
402
403 static int saa7110_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
404 {
405         struct i2c_client *client = v4l2_get_subdevdata(sd);
406
407         return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA7110, 0);
408 }
409
410 /* ----------------------------------------------------------------------- */
411
412 static const struct v4l2_subdev_core_ops saa7110_core_ops = {
413         .g_chip_ident = saa7110_g_chip_ident,
414         .g_ctrl = saa7110_g_ctrl,
415         .s_ctrl = saa7110_s_ctrl,
416         .queryctrl = saa7110_queryctrl,
417 };
418
419 static const struct v4l2_subdev_tuner_ops saa7110_tuner_ops = {
420         .s_std = saa7110_s_std,
421 };
422
423 static const struct v4l2_subdev_video_ops saa7110_video_ops = {
424         .s_routing = saa7110_s_routing,
425         .s_stream = saa7110_s_stream,
426         .querystd = saa7110_querystd,
427         .g_input_status = saa7110_g_input_status,
428 };
429
430 static const struct v4l2_subdev_ops saa7110_ops = {
431         .core = &saa7110_core_ops,
432         .tuner = &saa7110_tuner_ops,
433         .video = &saa7110_video_ops,
434 };
435
436 /* ----------------------------------------------------------------------- */
437
438 static int saa7110_probe(struct i2c_client *client,
439                         const struct i2c_device_id *id)
440 {
441         struct saa7110 *decoder;
442         struct v4l2_subdev *sd;
443         int rv;
444
445         /* Check if the adapter supports the needed features */
446         if (!i2c_check_functionality(client->adapter,
447                 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
448                 return -ENODEV;
449
450         v4l_info(client, "chip found @ 0x%x (%s)\n",
451                         client->addr << 1, client->adapter->name);
452
453         decoder = kzalloc(sizeof(struct saa7110), GFP_KERNEL);
454         if (!decoder)
455                 return -ENOMEM;
456         sd = &decoder->sd;
457         v4l2_i2c_subdev_init(sd, client, &saa7110_ops);
458         decoder->norm = V4L2_STD_PAL;
459         decoder->input = 0;
460         decoder->enable = 1;
461         decoder->bright = 32768;
462         decoder->contrast = 32768;
463         decoder->hue = 32768;
464         decoder->sat = 32768;
465         init_waitqueue_head(&decoder->wq);
466
467         rv = saa7110_write_block(sd, initseq, sizeof(initseq));
468         if (rv < 0) {
469                 v4l2_dbg(1, debug, sd, "init status %d\n", rv);
470         } else {
471                 int ver, status;
472                 saa7110_write(sd, 0x21, 0x10);
473                 saa7110_write(sd, 0x0e, 0x18);
474                 saa7110_write(sd, 0x0D, 0x04);
475                 ver = saa7110_read(sd);
476                 saa7110_write(sd, 0x0D, 0x06);
477                 /*mdelay(150);*/
478                 status = saa7110_read(sd);
479                 v4l2_dbg(1, debug, sd, "version %x, status=0x%02x\n",
480                                ver, status);
481                 saa7110_write(sd, 0x0D, 0x86);
482                 saa7110_write(sd, 0x0F, 0x10);
483                 saa7110_write(sd, 0x11, 0x59);
484                 /*saa7110_write(sd, 0x2E, 0x9A);*/
485         }
486
487         /*saa7110_selmux(sd,0);*/
488         /*determine_norm(sd);*/
489         /* setup and implicit mode 0 select has been performed */
490
491         return 0;
492 }
493
494 static int saa7110_remove(struct i2c_client *client)
495 {
496         struct v4l2_subdev *sd = i2c_get_clientdata(client);
497
498         v4l2_device_unregister_subdev(sd);
499         kfree(to_saa7110(sd));
500         return 0;
501 }
502
503 /* ----------------------------------------------------------------------- */
504
505 static const struct i2c_device_id saa7110_id[] = {
506         { "saa7110", 0 },
507         { }
508 };
509 MODULE_DEVICE_TABLE(i2c, saa7110_id);
510
511 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
512         .name = "saa7110",
513         .probe = saa7110_probe,
514         .remove = saa7110_remove,
515         .id_table = saa7110_id,
516 };