Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
[linux-2.6] / drivers / media / video / saa7134 / saa6752hs.c
1 #include <linux/module.h>
2 #include <linux/kernel.h>
3 #include <linux/string.h>
4 #include <linux/timer.h>
5 #include <linux/delay.h>
6 #include <linux/errno.h>
7 #include <linux/slab.h>
8 #include <linux/poll.h>
9 #include <linux/i2c.h>
10 #include <linux/types.h>
11 #include <linux/videodev2.h>
12 #include <media/v4l2-common.h>
13 #include <linux/init.h>
14 #include <linux/crc32.h>
15
16
17 #define MPEG_VIDEO_TARGET_BITRATE_MAX  27000
18 #define MPEG_VIDEO_MAX_BITRATE_MAX     27000
19 #define MPEG_TOTAL_TARGET_BITRATE_MAX  27000
20 #define MPEG_PID_MAX ((1 << 14) - 1)
21
22 /* Addresses to scan */
23 static unsigned short normal_i2c[] = {0x20, I2C_CLIENT_END};
24 I2C_CLIENT_INSMOD;
25
26 MODULE_DESCRIPTION("device driver for saa6752hs MPEG2 encoder");
27 MODULE_AUTHOR("Andrew de Quincey");
28 MODULE_LICENSE("GPL");
29
30 static struct i2c_driver driver;
31 static struct i2c_client client_template;
32
33 enum saa6752hs_videoformat {
34         SAA6752HS_VF_D1 = 0,    /* standard D1 video format: 720x576 */
35         SAA6752HS_VF_2_3_D1 = 1,/* 2/3D1 video format: 480x576 */
36         SAA6752HS_VF_1_2_D1 = 2,/* 1/2D1 video format: 352x576 */
37         SAA6752HS_VF_SIF = 3,   /* SIF video format: 352x288 */
38         SAA6752HS_VF_UNKNOWN,
39 };
40
41 struct saa6752hs_mpeg_params {
42         /* transport streams */
43         __u16                           ts_pid_pmt;
44         __u16                           ts_pid_audio;
45         __u16                           ts_pid_video;
46         __u16                           ts_pid_pcr;
47
48         /* audio */
49         enum v4l2_mpeg_audio_l2_bitrate au_l2_bitrate;
50
51         /* video */
52         enum v4l2_mpeg_video_aspect     vi_aspect;
53         enum v4l2_mpeg_video_bitrate_mode vi_bitrate_mode;
54         __u32                           vi_bitrate;
55         __u32                           vi_bitrate_peak;
56 };
57
58 static const struct v4l2_format v4l2_format_table[] =
59 {
60         [SAA6752HS_VF_D1] =
61                 { .fmt = { .pix = { .width = 720, .height = 576 }}},
62         [SAA6752HS_VF_2_3_D1] =
63                 { .fmt = { .pix = { .width = 480, .height = 576 }}},
64         [SAA6752HS_VF_1_2_D1] =
65                 { .fmt = { .pix = { .width = 352, .height = 576 }}},
66         [SAA6752HS_VF_SIF] =
67                 { .fmt = { .pix = { .width = 352, .height = 288 }}},
68         [SAA6752HS_VF_UNKNOWN] =
69                 { .fmt = { .pix = { .width = 0, .height = 0}}},
70 };
71
72 struct saa6752hs_state {
73         struct i2c_client             client;
74         struct saa6752hs_mpeg_params  params;
75         enum saa6752hs_videoformat    video_format;
76         v4l2_std_id                   standard;
77 };
78
79 enum saa6752hs_command {
80         SAA6752HS_COMMAND_RESET = 0,
81         SAA6752HS_COMMAND_STOP = 1,
82         SAA6752HS_COMMAND_START = 2,
83         SAA6752HS_COMMAND_PAUSE = 3,
84         SAA6752HS_COMMAND_RECONFIGURE = 4,
85         SAA6752HS_COMMAND_SLEEP = 5,
86         SAA6752HS_COMMAND_RECONFIGURE_FORCE = 6,
87
88         SAA6752HS_COMMAND_MAX
89 };
90
91 /* ---------------------------------------------------------------------- */
92
93 static u8 PAT[] = {
94         0xc2, /* i2c register */
95         0x00, /* table number for encoder */
96
97         0x47, /* sync */
98         0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */
99         0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
100
101         0x00, /* PSI pointer to start of table */
102
103         0x00, /* tid(0) */
104         0xb0, 0x0d, /* section_syntax_indicator(1), section_length(13) */
105
106         0x00, 0x01, /* transport_stream_id(1) */
107
108         0xc1, /* version_number(0), current_next_indicator(1) */
109
110         0x00, 0x00, /* section_number(0), last_section_number(0) */
111
112         0x00, 0x01, /* program_number(1) */
113
114         0xe0, 0x00, /* PMT PID */
115
116         0x00, 0x00, 0x00, 0x00 /* CRC32 */
117 };
118
119 static u8 PMT[] = {
120         0xc2, /* i2c register */
121         0x01, /* table number for encoder */
122
123         0x47, /* sync */
124         0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */
125         0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
126
127         0x00, /* PSI pointer to start of table */
128
129         0x02, /* tid(2) */
130         0xb0, 0x17, /* section_syntax_indicator(1), section_length(23) */
131
132         0x00, 0x01, /* program_number(1) */
133
134         0xc1, /* version_number(0), current_next_indicator(1) */
135
136         0x00, 0x00, /* section_number(0), last_section_number(0) */
137
138         0xe0, 0x00, /* PCR_PID */
139
140         0xf0, 0x00, /* program_info_length(0) */
141
142         0x02, 0xe0, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
143         0x04, 0xe0, 0x00, 0xf0, 0x00, /* audio stream type(4), pid */
144
145         0x00, 0x00, 0x00, 0x00 /* CRC32 */
146 };
147
148 static struct saa6752hs_mpeg_params param_defaults =
149 {
150         .ts_pid_pmt      = 16,
151         .ts_pid_video    = 260,
152         .ts_pid_audio    = 256,
153         .ts_pid_pcr      = 259,
154
155         .vi_aspect       = V4L2_MPEG_VIDEO_ASPECT_4x3,
156         .vi_bitrate      = 4000,
157         .vi_bitrate_peak = 6000,
158         .vi_bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
159
160         .au_l2_bitrate   = V4L2_MPEG_AUDIO_L2_BITRATE_256K,
161 };
162
163 /* ---------------------------------------------------------------------- */
164
165 static int saa6752hs_chip_command(struct i2c_client* client,
166                                   enum saa6752hs_command command)
167 {
168         unsigned char buf[3];
169         unsigned long timeout;
170         int status = 0;
171
172         /* execute the command */
173         switch(command) {
174         case SAA6752HS_COMMAND_RESET:
175                 buf[0] = 0x00;
176                 break;
177
178         case SAA6752HS_COMMAND_STOP:
179                 buf[0] = 0x03;
180                 break;
181
182         case SAA6752HS_COMMAND_START:
183                 buf[0] = 0x02;
184                 break;
185
186         case SAA6752HS_COMMAND_PAUSE:
187                 buf[0] = 0x04;
188                 break;
189
190         case SAA6752HS_COMMAND_RECONFIGURE:
191                 buf[0] = 0x05;
192                 break;
193
194         case SAA6752HS_COMMAND_SLEEP:
195                 buf[0] = 0x06;
196                 break;
197
198         case SAA6752HS_COMMAND_RECONFIGURE_FORCE:
199                 buf[0] = 0x07;
200                 break;
201
202         default:
203                 return -EINVAL;
204         }
205
206         /* set it and wait for it to be so */
207         i2c_master_send(client, buf, 1);
208         timeout = jiffies + HZ * 3;
209         for (;;) {
210                 /* get the current status */
211                 buf[0] = 0x10;
212                 i2c_master_send(client, buf, 1);
213                 i2c_master_recv(client, buf, 1);
214
215                 if (!(buf[0] & 0x20))
216                         break;
217                 if (time_after(jiffies,timeout)) {
218                         status = -ETIMEDOUT;
219                         break;
220                 }
221
222                 msleep(10);
223         }
224
225         /* delay a bit to let encoder settle */
226         msleep(50);
227
228         return status;
229 }
230
231
232 static int saa6752hs_set_bitrate(struct i2c_client* client,
233                                  struct saa6752hs_mpeg_params* params)
234 {
235         u8 buf[3];
236         int tot_bitrate;
237
238         /* set the bitrate mode */
239         buf[0] = 0x71;
240         buf[1] = (params->vi_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) ? 0 : 1;
241         i2c_master_send(client, buf, 2);
242
243         /* set the video bitrate */
244         if (params->vi_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) {
245                 /* set the target bitrate */
246                 buf[0] = 0x80;
247                 buf[1] = params->vi_bitrate >> 8;
248                 buf[2] = params->vi_bitrate & 0xff;
249                 i2c_master_send(client, buf, 3);
250
251                 /* set the max bitrate */
252                 buf[0] = 0x81;
253                 buf[1] = params->vi_bitrate_peak >> 8;
254                 buf[2] = params->vi_bitrate_peak & 0xff;
255                 i2c_master_send(client, buf, 3);
256                 tot_bitrate = params->vi_bitrate_peak;
257         } else {
258                 /* set the target bitrate (no max bitrate for CBR) */
259                 buf[0] = 0x81;
260                 buf[1] = params->vi_bitrate >> 8;
261                 buf[2] = params->vi_bitrate & 0xff;
262                 i2c_master_send(client, buf, 3);
263                 tot_bitrate = params->vi_bitrate;
264         }
265
266         /* set the audio bitrate */
267         buf[0] = 0x94;
268         buf[1] = (V4L2_MPEG_AUDIO_L2_BITRATE_256K == params->au_l2_bitrate) ? 0 : 1;
269         i2c_master_send(client, buf, 2);
270         tot_bitrate += (V4L2_MPEG_AUDIO_L2_BITRATE_256K == params->au_l2_bitrate) ? 256 : 384;
271
272         /* Note: the total max bitrate is determined by adding the video and audio
273            bitrates together and also adding an extra 768kbit/s to stay on the
274            safe side. If more control should be required, then an extra MPEG control
275            should be added. */
276         tot_bitrate += 768;
277         if (tot_bitrate > MPEG_TOTAL_TARGET_BITRATE_MAX)
278                 tot_bitrate = MPEG_TOTAL_TARGET_BITRATE_MAX;
279
280         /* set the total bitrate */
281         buf[0] = 0xb1;
282         buf[1] = tot_bitrate >> 8;
283         buf[2] = tot_bitrate & 0xff;
284         i2c_master_send(client, buf, 3);
285
286         return 0;
287 }
288
289 static void saa6752hs_set_subsampling(struct i2c_client* client,
290                                       struct v4l2_format* f)
291 {
292         struct saa6752hs_state *h = i2c_get_clientdata(client);
293         int dist_352, dist_480, dist_720;
294
295         /*
296           FIXME: translate and round width/height into EMPRESS
297           subsample type:
298
299           type   |   PAL   |  NTSC
300           ---------------------------
301           SIF    | 352x288 | 352x240
302           1/2 D1 | 352x576 | 352x480
303           2/3 D1 | 480x576 | 480x480
304           D1     | 720x576 | 720x480
305         */
306
307         dist_352 = abs(f->fmt.pix.width - 352);
308         dist_480 = abs(f->fmt.pix.width - 480);
309         dist_720 = abs(f->fmt.pix.width - 720);
310         if (dist_720 < dist_480) {
311                 f->fmt.pix.width = 720;
312                 f->fmt.pix.height = 576;
313                 h->video_format = SAA6752HS_VF_D1;
314         }
315         else if (dist_480 < dist_352) {
316                 f->fmt.pix.width = 480;
317                 f->fmt.pix.height = 576;
318                 h->video_format = SAA6752HS_VF_2_3_D1;
319         }
320         else {
321                 f->fmt.pix.width = 352;
322                 if (abs(f->fmt.pix.height - 576) <
323                     abs(f->fmt.pix.height - 288)) {
324                         f->fmt.pix.height = 576;
325                         h->video_format = SAA6752HS_VF_1_2_D1;
326                 }
327                 else {
328                         f->fmt.pix.height = 288;
329                         h->video_format = SAA6752HS_VF_SIF;
330                 }
331         }
332 }
333
334
335 static int handle_ctrl(struct saa6752hs_mpeg_params *params,
336                 struct v4l2_ext_control *ctrl, unsigned int cmd)
337 {
338         int old = 0, new;
339         int set = (cmd == VIDIOC_S_EXT_CTRLS);
340
341         new = ctrl->value;
342         switch (ctrl->id) {
343                 case V4L2_CID_MPEG_STREAM_TYPE:
344                         old = V4L2_MPEG_STREAM_TYPE_MPEG2_TS;
345                         if (set && new != old)
346                                 return -ERANGE;
347                         new = old;
348                         break;
349                 case V4L2_CID_MPEG_STREAM_PID_PMT:
350                         old = params->ts_pid_pmt;
351                         if (set && new > MPEG_PID_MAX)
352                                 return -ERANGE;
353                         if (new > MPEG_PID_MAX)
354                                 new = MPEG_PID_MAX;
355                         params->ts_pid_pmt = new;
356                         break;
357                 case V4L2_CID_MPEG_STREAM_PID_AUDIO:
358                         old = params->ts_pid_audio;
359                         if (set && new > MPEG_PID_MAX)
360                                 return -ERANGE;
361                         if (new > MPEG_PID_MAX)
362                                 new = MPEG_PID_MAX;
363                         params->ts_pid_audio = new;
364                         break;
365                 case V4L2_CID_MPEG_STREAM_PID_VIDEO:
366                         old = params->ts_pid_video;
367                         if (set && new > MPEG_PID_MAX)
368                                 return -ERANGE;
369                         if (new > MPEG_PID_MAX)
370                                 new = MPEG_PID_MAX;
371                         params->ts_pid_video = new;
372                         break;
373                 case V4L2_CID_MPEG_STREAM_PID_PCR:
374                         old = params->ts_pid_pcr;
375                         if (set && new > MPEG_PID_MAX)
376                                 return -ERANGE;
377                         if (new > MPEG_PID_MAX)
378                                 new = MPEG_PID_MAX;
379                         params->ts_pid_pcr = new;
380                         break;
381                 case V4L2_CID_MPEG_AUDIO_ENCODING:
382                         old = V4L2_MPEG_AUDIO_ENCODING_LAYER_2;
383                         if (set && new != old)
384                                 return -ERANGE;
385                         new = old;
386                         break;
387                 case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
388                         old = params->au_l2_bitrate;
389                         if (set && new != V4L2_MPEG_AUDIO_L2_BITRATE_256K &&
390                                    new != V4L2_MPEG_AUDIO_L2_BITRATE_384K)
391                                 return -ERANGE;
392                         if (new <= V4L2_MPEG_AUDIO_L2_BITRATE_256K)
393                                 new = V4L2_MPEG_AUDIO_L2_BITRATE_256K;
394                         else
395                                 new = V4L2_MPEG_AUDIO_L2_BITRATE_384K;
396                         params->au_l2_bitrate = new;
397                         break;
398                 case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
399                         old = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000;
400                         if (set && new != old)
401                                 return -ERANGE;
402                         new = old;
403                         break;
404                 case V4L2_CID_MPEG_VIDEO_ENCODING:
405                         old = V4L2_MPEG_VIDEO_ENCODING_MPEG_2;
406                         if (set && new != old)
407                                 return -ERANGE;
408                         new = old;
409                         break;
410                 case V4L2_CID_MPEG_VIDEO_ASPECT:
411                         old = params->vi_aspect;
412                         if (set && new != V4L2_MPEG_VIDEO_ASPECT_16x9 &&
413                                    new != V4L2_MPEG_VIDEO_ASPECT_4x3)
414                                 return -ERANGE;
415                         if (new != V4L2_MPEG_VIDEO_ASPECT_16x9)
416                                 new = V4L2_MPEG_VIDEO_ASPECT_4x3;
417                         params->vi_aspect = new;
418                         break;
419                 case V4L2_CID_MPEG_VIDEO_BITRATE:
420                         old = params->vi_bitrate * 1000;
421                         new = 1000 * (new / 1000);
422                         if (set && new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
423                                 return -ERANGE;
424                         if (new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
425                                 new = MPEG_VIDEO_TARGET_BITRATE_MAX * 1000;
426                         params->vi_bitrate = new / 1000;
427                         break;
428                 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
429                         old = params->vi_bitrate_peak * 1000;
430                         new = 1000 * (new / 1000);
431                         if (set && new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
432                                 return -ERANGE;
433                         if (new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
434                                 new = MPEG_VIDEO_TARGET_BITRATE_MAX * 1000;
435                         params->vi_bitrate_peak = new / 1000;
436                         break;
437                 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
438                         old = params->vi_bitrate_mode;
439                         params->vi_bitrate_mode = new;
440                         break;
441                 default:
442                         return -EINVAL;
443         }
444         if (cmd == VIDIOC_G_EXT_CTRLS)
445                 ctrl->value = old;
446         else
447                 ctrl->value = new;
448         return 0;
449 }
450
451 static int saa6752hs_init(struct i2c_client* client)
452 {
453         unsigned char buf[9], buf2[4];
454         struct saa6752hs_state *h;
455         u32 crc;
456         unsigned char localPAT[256];
457         unsigned char localPMT[256];
458
459         h = i2c_get_clientdata(client);
460
461         /* Set video format - must be done first as it resets other settings */
462         buf[0] = 0x41;
463         buf[1] = h->video_format;
464         i2c_master_send(client, buf, 2);
465
466         /* Set number of lines in input signal */
467         buf[0] = 0x40;
468         buf[1] = 0x00;
469         if (h->standard & V4L2_STD_525_60)
470                 buf[1] = 0x01;
471         i2c_master_send(client, buf, 2);
472
473         /* set bitrate */
474         saa6752hs_set_bitrate(client, &h->params);
475
476         /* Set GOP structure {3, 13} */
477         buf[0] = 0x72;
478         buf[1] = 0x03;
479         buf[2] = 0x0D;
480         i2c_master_send(client,buf,3);
481
482         /* Set minimum Q-scale {4} */
483         buf[0] = 0x82;
484         buf[1] = 0x04;
485         i2c_master_send(client,buf,2);
486
487         /* Set maximum Q-scale {12} */
488         buf[0] = 0x83;
489         buf[1] = 0x0C;
490         i2c_master_send(client,buf,2);
491
492         /* Set Output Protocol */
493         buf[0] = 0xD0;
494         buf[1] = 0x81;
495         i2c_master_send(client,buf,2);
496
497         /* Set video output stream format {TS} */
498         buf[0] = 0xB0;
499         buf[1] = 0x05;
500         i2c_master_send(client,buf,2);
501
502         /* compute PAT */
503         memcpy(localPAT, PAT, sizeof(PAT));
504         localPAT[17] = 0xe0 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
505         localPAT[18] = h->params.ts_pid_pmt & 0xff;
506         crc = crc32_be(~0, &localPAT[7], sizeof(PAT) - 7 - 4);
507         localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF;
508         localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF;
509         localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF;
510         localPAT[sizeof(PAT) - 1] = crc & 0xFF;
511
512         /* compute PMT */
513         memcpy(localPMT, PMT, sizeof(PMT));
514         localPMT[3] = 0x40 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
515         localPMT[4] = h->params.ts_pid_pmt & 0xff;
516         localPMT[15] = 0xE0 | ((h->params.ts_pid_pcr >> 8) & 0x0F);
517         localPMT[16] = h->params.ts_pid_pcr & 0xFF;
518         localPMT[20] = 0xE0 | ((h->params.ts_pid_video >> 8) & 0x0F);
519         localPMT[21] = h->params.ts_pid_video & 0xFF;
520         localPMT[25] = 0xE0 | ((h->params.ts_pid_audio >> 8) & 0x0F);
521         localPMT[26] = h->params.ts_pid_audio & 0xFF;
522         crc = crc32_be(~0, &localPMT[7], sizeof(PMT) - 7 - 4);
523         localPMT[sizeof(PMT) - 4] = (crc >> 24) & 0xFF;
524         localPMT[sizeof(PMT) - 3] = (crc >> 16) & 0xFF;
525         localPMT[sizeof(PMT) - 2] = (crc >> 8) & 0xFF;
526         localPMT[sizeof(PMT) - 1] = crc & 0xFF;
527
528         /* Set Audio PID */
529         buf[0] = 0xC1;
530         buf[1] = (h->params.ts_pid_audio >> 8) & 0xFF;
531         buf[2] = h->params.ts_pid_audio & 0xFF;
532         i2c_master_send(client,buf,3);
533
534         /* Set Video PID */
535         buf[0] = 0xC0;
536         buf[1] = (h->params.ts_pid_video >> 8) & 0xFF;
537         buf[2] = h->params.ts_pid_video & 0xFF;
538         i2c_master_send(client,buf,3);
539
540         /* Set PCR PID */
541         buf[0] = 0xC4;
542         buf[1] = (h->params.ts_pid_pcr >> 8) & 0xFF;
543         buf[2] = h->params.ts_pid_pcr & 0xFF;
544         i2c_master_send(client,buf,3);
545
546         /* Send SI tables */
547         i2c_master_send(client,localPAT,sizeof(PAT));
548         i2c_master_send(client,localPMT,sizeof(PMT));
549
550         /* mute then unmute audio. This removes buzzing artefacts */
551         buf[0] = 0xa4;
552         buf[1] = 1;
553         i2c_master_send(client, buf, 2);
554         buf[1] = 0;
555         i2c_master_send(client, buf, 2);
556
557         /* start it going */
558         saa6752hs_chip_command(client, SAA6752HS_COMMAND_START);
559
560         /* readout current state */
561         buf[0] = 0xE1;
562         buf[1] = 0xA7;
563         buf[2] = 0xFE;
564         buf[3] = 0x82;
565         buf[4] = 0xB0;
566         i2c_master_send(client, buf, 5);
567         i2c_master_recv(client, buf2, 4);
568
569         /* change aspect ratio */
570         buf[0] = 0xE0;
571         buf[1] = 0xA7;
572         buf[2] = 0xFE;
573         buf[3] = 0x82;
574         buf[4] = 0xB0;
575         buf[5] = buf2[0];
576         switch(h->params.vi_aspect) {
577         case V4L2_MPEG_VIDEO_ASPECT_16x9:
578                 buf[6] = buf2[1] | 0x40;
579                 break;
580         case V4L2_MPEG_VIDEO_ASPECT_4x3:
581         default:
582                 buf[6] = buf2[1] & 0xBF;
583                 break;
584                 break;
585         }
586         buf[7] = buf2[2];
587         buf[8] = buf2[3];
588         i2c_master_send(client, buf, 9);
589
590         return 0;
591 }
592
593 static int saa6752hs_attach(struct i2c_adapter *adap, int addr, int kind)
594 {
595         struct saa6752hs_state *h;
596
597
598         if (NULL == (h = kzalloc(sizeof(*h), GFP_KERNEL)))
599                 return -ENOMEM;
600         h->client = client_template;
601         h->params = param_defaults;
602         h->client.adapter = adap;
603         h->client.addr = addr;
604
605         /* Assume 625 input lines */
606         h->standard = 0;
607
608         i2c_set_clientdata(&h->client, h);
609         i2c_attach_client(&h->client);
610
611         v4l_info(&h->client,"saa6752hs: chip found @ 0x%x\n", addr<<1);
612
613         return 0;
614 }
615
616 static int saa6752hs_probe(struct i2c_adapter *adap)
617 {
618         if (adap->class & I2C_CLASS_TV_ANALOG)
619                 return i2c_probe(adap, &addr_data, saa6752hs_attach);
620         return 0;
621 }
622
623 static int saa6752hs_detach(struct i2c_client *client)
624 {
625         struct saa6752hs_state *h;
626
627         h = i2c_get_clientdata(client);
628         i2c_detach_client(client);
629         kfree(h);
630         return 0;
631 }
632
633 static int
634 saa6752hs_command(struct i2c_client *client, unsigned int cmd, void *arg)
635 {
636         struct saa6752hs_state *h = i2c_get_clientdata(client);
637         struct v4l2_ext_controls *ctrls = arg;
638         struct saa6752hs_mpeg_params params;
639         int err = 0;
640         int i;
641
642         switch (cmd) {
643         case VIDIOC_S_EXT_CTRLS:
644                 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
645                         return -EINVAL;
646                 if (ctrls->count == 0) {
647                         /* apply settings and start encoder */
648                         saa6752hs_init(client);
649                         break;
650                 }
651                 /* fall through */
652         case VIDIOC_TRY_EXT_CTRLS:
653         case VIDIOC_G_EXT_CTRLS:
654                 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
655                         return -EINVAL;
656                 params = h->params;
657                 for (i = 0; i < ctrls->count; i++) {
658                         if ((err = handle_ctrl(&params, ctrls->controls + i, cmd))) {
659                                 ctrls->error_idx = i;
660                                 return err;
661                         }
662                 }
663                 h->params = params;
664                 break;
665         case VIDIOC_G_FMT:
666         {
667            struct v4l2_format *f = arg;
668
669            if (h->video_format == SAA6752HS_VF_UNKNOWN)
670                    h->video_format = SAA6752HS_VF_D1;
671            f->fmt.pix.width =
672                    v4l2_format_table[h->video_format].fmt.pix.width;
673            f->fmt.pix.height =
674                    v4l2_format_table[h->video_format].fmt.pix.height;
675            break ;
676         }
677         case VIDIOC_S_FMT:
678         {
679                 struct v4l2_format *f = arg;
680
681                 saa6752hs_set_subsampling(client, f);
682                 break;
683         }
684         case VIDIOC_S_STD:
685                 h->standard = *((v4l2_std_id *) arg);
686                 break;
687         default:
688                 /* nothing */
689                 break;
690         }
691
692         return err;
693 }
694
695 /* ----------------------------------------------------------------------- */
696
697 static struct i2c_driver driver = {
698         .driver = {
699                 .name   = "saa6752hs",
700         },
701         .id             = I2C_DRIVERID_SAA6752HS,
702         .attach_adapter = saa6752hs_probe,
703         .detach_client  = saa6752hs_detach,
704         .command        = saa6752hs_command,
705 };
706
707 static struct i2c_client client_template =
708 {
709         .name       = "saa6752hs",
710         .driver     = &driver,
711 };
712
713 static int __init saa6752hs_init_module(void)
714 {
715         return i2c_add_driver(&driver);
716 }
717
718 static void __exit saa6752hs_cleanup_module(void)
719 {
720         i2c_del_driver(&driver);
721 }
722
723 module_init(saa6752hs_init_module);
724 module_exit(saa6752hs_cleanup_module);
725
726 /*
727  * Overrides for Emacs so that we follow Linus's tabbing style.
728  * ---------------------------------------------------------------------------
729  * Local variables:
730  * c-basic-offset: 8
731  * End:
732  */