Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jikos/hid
[linux-2.6] / drivers / media / video / cx25840 / cx25840-core.c
1 /* cx25840 - Conexant CX25840 audio/video decoder driver
2  *
3  * Copyright (C) 2004 Ulf Eklund
4  *
5  * Based on the saa7115 driver and on the first verison of Chris Kennedy's
6  * cx25840 driver.
7  *
8  * Changes by Tyler Trafford <tatrafford@comcast.net>
9  *    - cleanup/rewrite for V4L2 API (2005)
10  *
11  * VBI support by Hans Verkuil <hverkuil@xs4all.nl>.
12  *
13  * NTSC sliced VBI support by Christopher Neufeld <television@cneufeld.ca>
14  * with additional fixes by Hans Verkuil <hverkuil@xs4all.nl>.
15  *
16  * This program is free software; you can redistribute it and/or
17  * modify it under the terms of the GNU General Public License
18  * as published by the Free Software Foundation; either version 2
19  * of the License, or (at your option) any later version.
20  *
21  * This program is distributed in the hope that it will be useful,
22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
24  * GNU General Public License for more details.
25  *
26  * You should have received a copy of the GNU General Public License
27  * along with this program; if not, write to the Free Software
28  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
29  */
30
31
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/slab.h>
35 #include <linux/videodev2.h>
36 #include <linux/i2c.h>
37 #include <media/v4l2-common.h>
38 #include <media/cx25840.h>
39
40 #include "cx25840-core.h"
41
42 MODULE_DESCRIPTION("Conexant CX25840 audio/video decoder driver");
43 MODULE_AUTHOR("Ulf Eklund, Chris Kennedy, Hans Verkuil, Tyler Trafford");
44 MODULE_LICENSE("GPL");
45
46 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
47
48
49 int cx25840_debug;
50
51 module_param_named(debug,cx25840_debug, int, 0644);
52
53 MODULE_PARM_DESC(debug, "Debugging messages [0=Off (default) 1=On]");
54
55 I2C_CLIENT_INSMOD;
56
57 /* ----------------------------------------------------------------------- */
58
59 int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
60 {
61         u8 buffer[3];
62         buffer[0] = addr >> 8;
63         buffer[1] = addr & 0xff;
64         buffer[2] = value;
65         return i2c_master_send(client, buffer, 3);
66 }
67
68 int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
69 {
70         u8 buffer[6];
71         buffer[0] = addr >> 8;
72         buffer[1] = addr & 0xff;
73         buffer[2] = value >> 24;
74         buffer[3] = (value >> 16) & 0xff;
75         buffer[4] = (value >> 8) & 0xff;
76         buffer[5] = value & 0xff;
77         return i2c_master_send(client, buffer, 6);
78 }
79
80 u8 cx25840_read(struct i2c_client * client, u16 addr)
81 {
82         u8 buffer[2];
83         buffer[0] = addr >> 8;
84         buffer[1] = addr & 0xff;
85
86         if (i2c_master_send(client, buffer, 2) < 2)
87                 return 0;
88
89         if (i2c_master_recv(client, buffer, 1) < 1)
90                 return 0;
91
92         return buffer[0];
93 }
94
95 u32 cx25840_read4(struct i2c_client * client, u16 addr)
96 {
97         u8 buffer[4];
98         buffer[0] = addr >> 8;
99         buffer[1] = addr & 0xff;
100
101         if (i2c_master_send(client, buffer, 2) < 2)
102                 return 0;
103
104         if (i2c_master_recv(client, buffer, 4) < 4)
105                 return 0;
106
107         return (buffer[3] << 24) | (buffer[2] << 16) |
108             (buffer[1] << 8) | buffer[0];
109 }
110
111 int cx25840_and_or(struct i2c_client *client, u16 addr, unsigned and_mask,
112                    u8 or_value)
113 {
114         return cx25840_write(client, addr,
115                              (cx25840_read(client, addr) & and_mask) |
116                              or_value);
117 }
118
119 /* ----------------------------------------------------------------------- */
120
121 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
122                                                 enum cx25840_audio_input aud_input);
123 static void log_audio_status(struct i2c_client *client);
124 static void log_video_status(struct i2c_client *client);
125
126 /* ----------------------------------------------------------------------- */
127
128 static void init_dll1(struct i2c_client *client)
129 {
130         /* This is the Hauppauge sequence used to
131          * initialize the Delay Lock Loop 1 (ADC DLL). */
132         cx25840_write(client, 0x159, 0x23);
133         cx25840_write(client, 0x15a, 0x87);
134         cx25840_write(client, 0x15b, 0x06);
135         cx25840_write(client, 0x159, 0xe1);
136         cx25840_write(client, 0x15a, 0x86);
137         cx25840_write(client, 0x159, 0xe0);
138         cx25840_write(client, 0x159, 0xe1);
139         cx25840_write(client, 0x15b, 0x10);
140 }
141
142 static void init_dll2(struct i2c_client *client)
143 {
144         /* This is the Hauppauge sequence used to
145          * initialize the Delay Lock Loop 2 (ADC DLL). */
146         cx25840_write(client, 0x15d, 0xe3);
147         cx25840_write(client, 0x15e, 0x86);
148         cx25840_write(client, 0x15f, 0x06);
149         cx25840_write(client, 0x15d, 0xe1);
150         cx25840_write(client, 0x15d, 0xe0);
151         cx25840_write(client, 0x15d, 0xe1);
152 }
153
154 static void cx25836_initialize(struct i2c_client *client)
155 {
156         /* reset configuration is described on page 3-77 of the CX25836 datasheet */
157         /* 2. */
158         cx25840_and_or(client, 0x000, ~0x01, 0x01);
159         cx25840_and_or(client, 0x000, ~0x01, 0x00);
160         /* 3a. */
161         cx25840_and_or(client, 0x15a, ~0x70, 0x00);
162         /* 3b. */
163         cx25840_and_or(client, 0x15b, ~0x1e, 0x06);
164         /* 3c. */
165         cx25840_and_or(client, 0x159, ~0x02, 0x02);
166         /* 3d. */
167         /* There should be a 10-us delay here, but since the
168            i2c bus already has a 10-us delay we don't need to do
169            anything */
170         /* 3e. */
171         cx25840_and_or(client, 0x159, ~0x02, 0x00);
172         /* 3f. */
173         cx25840_and_or(client, 0x159, ~0xc0, 0xc0);
174         /* 3g. */
175         cx25840_and_or(client, 0x159, ~0x01, 0x00);
176         cx25840_and_or(client, 0x159, ~0x01, 0x01);
177         /* 3h. */
178         cx25840_and_or(client, 0x15b, ~0x1e, 0x10);
179 }
180
181 static void cx25840_initialize(struct i2c_client *client, int loadfw)
182 {
183         struct cx25840_state *state = i2c_get_clientdata(client);
184
185         /* datasheet startup in numbered steps, refer to page 3-77 */
186         /* 2. */
187         cx25840_and_or(client, 0x803, ~0x10, 0x00);
188         /* The default of this register should be 4, but I get 0 instead.
189          * Set this register to 4 manually. */
190         cx25840_write(client, 0x000, 0x04);
191         /* 3. */
192         init_dll1(client);
193         init_dll2(client);
194         cx25840_write(client, 0x136, 0x0a);
195         /* 4. */
196         cx25840_write(client, 0x13c, 0x01);
197         cx25840_write(client, 0x13c, 0x00);
198         /* 5. */
199         if (loadfw)
200                 cx25840_loadfw(client);
201         /* 6. */
202         cx25840_write(client, 0x115, 0x8c);
203         cx25840_write(client, 0x116, 0x07);
204         cx25840_write(client, 0x118, 0x02);
205         /* 7. */
206         cx25840_write(client, 0x4a5, 0x80);
207         cx25840_write(client, 0x4a5, 0x00);
208         cx25840_write(client, 0x402, 0x00);
209         /* 8. */
210         cx25840_and_or(client, 0x401, ~0x18, 0);
211         cx25840_and_or(client, 0x4a2, ~0x10, 0x10);
212         /* steps 8c and 8d are done in change_input() */
213         /* 10. */
214         cx25840_write(client, 0x8d3, 0x1f);
215         cx25840_write(client, 0x8e3, 0x03);
216
217         cx25840_vbi_setup(client);
218
219         /* trial and error says these are needed to get audio */
220         cx25840_write(client, 0x914, 0xa0);
221         cx25840_write(client, 0x918, 0xa0);
222         cx25840_write(client, 0x919, 0x01);
223
224         /* stereo prefered */
225         cx25840_write(client, 0x809, 0x04);
226         /* AC97 shift */
227         cx25840_write(client, 0x8cf, 0x0f);
228
229         /* (re)set input */
230         set_input(client, state->vid_input, state->aud_input);
231
232         /* start microcontroller */
233         cx25840_and_or(client, 0x803, ~0x10, 0x10);
234 }
235
236 /* ----------------------------------------------------------------------- */
237
238 static void input_change(struct i2c_client *client)
239 {
240         struct cx25840_state *state = i2c_get_clientdata(client);
241         v4l2_std_id std = cx25840_get_v4lstd(client);
242
243         /* Follow step 8c and 8d of section 3.16 in the cx25840 datasheet */
244         if (std & V4L2_STD_SECAM) {
245                 cx25840_write(client, 0x402, 0);
246         }
247         else {
248                 cx25840_write(client, 0x402, 0x04);
249                 cx25840_write(client, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
250         }
251         cx25840_and_or(client, 0x401, ~0x60, 0);
252         cx25840_and_or(client, 0x401, ~0x60, 0x60);
253
254         if (std & V4L2_STD_525_60) {
255                 /* Certain Hauppauge PVR150 models have a hardware bug
256                    that causes audio to drop out. For these models the
257                    audio standard must be set explicitly.
258                    To be precise: it affects cards with tuner models
259                    85, 99 and 112 (model numbers from tveeprom). */
260                 int hw_fix = state->pvr150_workaround;
261
262                 if (std == V4L2_STD_NTSC_M_JP) {
263                         /* Japan uses EIAJ audio standard */
264                         cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
265                 } else if (std == V4L2_STD_NTSC_M_KR) {
266                         /* South Korea uses A2 audio standard */
267                         cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
268                 } else {
269                         /* Others use the BTSC audio standard */
270                         cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
271                 }
272                 cx25840_write(client, 0x80b, 0x00);
273         } else if (std & V4L2_STD_PAL) {
274                 /* Follow tuner change procedure for PAL */
275                 cx25840_write(client, 0x808, 0xff);
276                 cx25840_write(client, 0x80b, 0x10);
277         } else if (std & V4L2_STD_SECAM) {
278                 /* Select autodetect for SECAM */
279                 cx25840_write(client, 0x808, 0xff);
280                 cx25840_write(client, 0x80b, 0x10);
281         }
282
283         if (cx25840_read(client, 0x803) & 0x10) {
284                 /* restart audio decoder microcontroller */
285                 cx25840_and_or(client, 0x803, ~0x10, 0x00);
286                 cx25840_and_or(client, 0x803, ~0x10, 0x10);
287         }
288 }
289
290 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
291                                                 enum cx25840_audio_input aud_input)
292 {
293         struct cx25840_state *state = i2c_get_clientdata(client);
294         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
295                            vid_input <= CX25840_COMPOSITE8);
296         u8 reg;
297
298         v4l_dbg(1, cx25840_debug, client, "decoder set video input %d, audio input %d\n",
299                         vid_input, aud_input);
300
301         if (is_composite) {
302                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
303         } else {
304                 int luma = vid_input & 0xf0;
305                 int chroma = vid_input & 0xf00;
306
307                 if ((vid_input & ~0xff0) ||
308                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
309                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
310                         v4l_err(client, "0x%04x is not a valid video input!\n", vid_input);
311                         return -EINVAL;
312                 }
313                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
314                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
315                         reg &= 0x3f;
316                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
317                 } else {
318                         reg &= 0xcf;
319                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
320                 }
321         }
322
323         switch (aud_input) {
324         case CX25840_AUDIO_SERIAL:
325                 /* do nothing, use serial audio input */
326                 break;
327         case CX25840_AUDIO4: reg &= ~0x30; break;
328         case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
329         case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
330         case CX25840_AUDIO7: reg &= ~0xc0; break;
331         case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
332
333         default:
334                 v4l_err(client, "0x%04x is not a valid audio input!\n", aud_input);
335                 return -EINVAL;
336         }
337
338         cx25840_write(client, 0x103, reg);
339         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
340         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
341         /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
342         cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
343         /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
344         if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
345                 cx25840_and_or(client, 0x102, ~0x4, 4);
346         else
347                 cx25840_and_or(client, 0x102, ~0x4, 0);
348
349         state->vid_input = vid_input;
350         state->aud_input = aud_input;
351         if (!state->is_cx25836) {
352                 cx25840_audio_set_path(client);
353                 input_change(client);
354         }
355         return 0;
356 }
357
358 /* ----------------------------------------------------------------------- */
359
360 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
361 {
362         u8 fmt=0;       /* zero is autodetect */
363
364         /* First tests should be against specific std */
365         if (std == V4L2_STD_NTSC_M_JP) {
366                 fmt=0x2;
367         } else if (std == V4L2_STD_NTSC_443) {
368                 fmt=0x3;
369         } else if (std == V4L2_STD_PAL_M) {
370                 fmt=0x5;
371         } else if (std == V4L2_STD_PAL_N) {
372                 fmt=0x6;
373         } else if (std == V4L2_STD_PAL_Nc) {
374                 fmt=0x7;
375         } else if (std == V4L2_STD_PAL_60) {
376                 fmt=0x8;
377         } else {
378                 /* Then, test against generic ones */
379                 if (std & V4L2_STD_NTSC) {
380                         fmt=0x1;
381                 } else if (std & V4L2_STD_PAL) {
382                         fmt=0x4;
383                 } else if (std & V4L2_STD_SECAM) {
384                         fmt=0xc;
385                 }
386         }
387
388         v4l_dbg(1, cx25840_debug, client, "changing video std to fmt %i\n",fmt);
389
390         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
391            Without this PAL may display a vertical ghosting effect.
392            This happens for example with the Yuan MPC622. */
393         if (fmt >= 4 && fmt < 8) {
394                 /* Set format to NTSC-M */
395                 cx25840_and_or(client, 0x400, ~0xf, 1);
396                 /* Turn off LCOMB */
397                 cx25840_and_or(client, 0x47b, ~6, 0);
398         }
399         cx25840_and_or(client, 0x400, ~0xf, fmt);
400         cx25840_vbi_setup(client);
401         return 0;
402 }
403
404 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
405 {
406         struct cx25840_state *state = i2c_get_clientdata(client);
407         /* check VID_FMT_SEL first */
408         u8 fmt = cx25840_read(client, 0x400) & 0xf;
409
410         if (!fmt) {
411                 /* check AFD_FMT_STAT if set to autodetect */
412                 fmt = cx25840_read(client, 0x40d) & 0xf;
413         }
414
415         switch (fmt) {
416         case 0x1:
417         {
418                 /* if the audio std is A2-M, then this is the South Korean
419                    NTSC standard */
420                 if (!state->is_cx25836 && cx25840_read(client, 0x805) == 2)
421                         return V4L2_STD_NTSC_M_KR;
422                 return V4L2_STD_NTSC_M;
423         }
424         case 0x2: return V4L2_STD_NTSC_M_JP;
425         case 0x3: return V4L2_STD_NTSC_443;
426         case 0x4: return V4L2_STD_PAL;
427         case 0x5: return V4L2_STD_PAL_M;
428         case 0x6: return V4L2_STD_PAL_N;
429         case 0x7: return V4L2_STD_PAL_Nc;
430         case 0x8: return V4L2_STD_PAL_60;
431         case 0xc: return V4L2_STD_SECAM;
432         default: return V4L2_STD_UNKNOWN;
433         }
434 }
435
436 /* ----------------------------------------------------------------------- */
437
438 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
439 {
440         struct cx25840_state *state = i2c_get_clientdata(client);
441
442         switch (ctrl->id) {
443         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
444                 state->pvr150_workaround = ctrl->value;
445                 set_input(client, state->vid_input, state->aud_input);
446                 break;
447
448         case V4L2_CID_BRIGHTNESS:
449                 if (ctrl->value < 0 || ctrl->value > 255) {
450                         v4l_err(client, "invalid brightness setting %d\n",
451                                     ctrl->value);
452                         return -ERANGE;
453                 }
454
455                 cx25840_write(client, 0x414, ctrl->value - 128);
456                 break;
457
458         case V4L2_CID_CONTRAST:
459                 if (ctrl->value < 0 || ctrl->value > 127) {
460                         v4l_err(client, "invalid contrast setting %d\n",
461                                     ctrl->value);
462                         return -ERANGE;
463                 }
464
465                 cx25840_write(client, 0x415, ctrl->value << 1);
466                 break;
467
468         case V4L2_CID_SATURATION:
469                 if (ctrl->value < 0 || ctrl->value > 127) {
470                         v4l_err(client, "invalid saturation setting %d\n",
471                                     ctrl->value);
472                         return -ERANGE;
473                 }
474
475                 cx25840_write(client, 0x420, ctrl->value << 1);
476                 cx25840_write(client, 0x421, ctrl->value << 1);
477                 break;
478
479         case V4L2_CID_HUE:
480                 if (ctrl->value < -127 || ctrl->value > 127) {
481                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
482                         return -ERANGE;
483                 }
484
485                 cx25840_write(client, 0x422, ctrl->value);
486                 break;
487
488         case V4L2_CID_AUDIO_VOLUME:
489         case V4L2_CID_AUDIO_BASS:
490         case V4L2_CID_AUDIO_TREBLE:
491         case V4L2_CID_AUDIO_BALANCE:
492         case V4L2_CID_AUDIO_MUTE:
493                 if (state->is_cx25836)
494                         return -EINVAL;
495                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
496
497         default:
498                 return -EINVAL;
499         }
500
501         return 0;
502 }
503
504 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
505 {
506         struct cx25840_state *state = i2c_get_clientdata(client);
507
508         switch (ctrl->id) {
509         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
510                 ctrl->value = state->pvr150_workaround;
511                 break;
512         case V4L2_CID_BRIGHTNESS:
513                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
514                 break;
515         case V4L2_CID_CONTRAST:
516                 ctrl->value = cx25840_read(client, 0x415) >> 1;
517                 break;
518         case V4L2_CID_SATURATION:
519                 ctrl->value = cx25840_read(client, 0x420) >> 1;
520                 break;
521         case V4L2_CID_HUE:
522                 ctrl->value = (s8)cx25840_read(client, 0x422);
523                 break;
524         case V4L2_CID_AUDIO_VOLUME:
525         case V4L2_CID_AUDIO_BASS:
526         case V4L2_CID_AUDIO_TREBLE:
527         case V4L2_CID_AUDIO_BALANCE:
528         case V4L2_CID_AUDIO_MUTE:
529                 if (state->is_cx25836)
530                         return -EINVAL;
531                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
532         default:
533                 return -EINVAL;
534         }
535
536         return 0;
537 }
538
539 /* ----------------------------------------------------------------------- */
540
541 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
542 {
543         switch (fmt->type) {
544         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
545                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
546         default:
547                 return -EINVAL;
548         }
549
550         return 0;
551 }
552
553 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
554 {
555         struct v4l2_pix_format *pix;
556         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
557         int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);
558
559         switch (fmt->type) {
560         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
561                 pix = &(fmt->fmt.pix);
562
563                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
564                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
565
566                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
567                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
568
569                 Vlines = pix->height + (is_pal ? 4 : 7);
570
571                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
572                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
573                         v4l_err(client, "%dx%d is not a valid size!\n",
574                                     pix->width, pix->height);
575                         return -ERANGE;
576                 }
577
578                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
579                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
580                 VSC &= 0x1fff;
581
582                 if (pix->width >= 385)
583                         filter = 0;
584                 else if (pix->width > 192)
585                         filter = 1;
586                 else if (pix->width > 96)
587                         filter = 2;
588                 else
589                         filter = 3;
590
591                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
592                             pix->width, pix->height, HSC, VSC);
593
594                 /* HSCALE=HSC */
595                 cx25840_write(client, 0x418, HSC & 0xff);
596                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
597                 cx25840_write(client, 0x41a, HSC >> 16);
598                 /* VSCALE=VSC */
599                 cx25840_write(client, 0x41c, VSC & 0xff);
600                 cx25840_write(client, 0x41d, VSC >> 8);
601                 /* VS_INTRLACE=1 VFILT=filter */
602                 cx25840_write(client, 0x41e, 0x8 | filter);
603                 break;
604
605         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
606                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
607
608         case V4L2_BUF_TYPE_VBI_CAPTURE:
609                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
610
611         default:
612                 return -EINVAL;
613         }
614
615         return 0;
616 }
617
618 /* ----------------------------------------------------------------------- */
619
620 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
621                            void *arg)
622 {
623         struct cx25840_state *state = i2c_get_clientdata(client);
624         struct v4l2_tuner *vt = arg;
625         struct v4l2_routing *route = arg;
626
627         switch (cmd) {
628 #ifdef CONFIG_VIDEO_ADV_DEBUG
629         /* ioctls to allow direct access to the
630          * cx25840 registers for testing */
631         case VIDIOC_DBG_G_REGISTER:
632         case VIDIOC_DBG_S_REGISTER:
633         {
634                 struct v4l2_register *reg = arg;
635
636                 if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
637                         return -EINVAL;
638                 if (!capable(CAP_SYS_ADMIN))
639                         return -EPERM;
640                 if (cmd == VIDIOC_DBG_G_REGISTER)
641                         reg->val = cx25840_read(client, reg->reg & 0x0fff);
642                 else
643                         cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
644                 break;
645         }
646 #endif
647
648         case VIDIOC_INT_DECODE_VBI_LINE:
649                 return cx25840_vbi(client, cmd, arg);
650
651         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
652                 return cx25840_audio(client, cmd, arg);
653
654         case VIDIOC_STREAMON:
655                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
656                 cx25840_write(client, 0x115, state->is_cx25836 ? 0x0c : 0x8c);
657                 cx25840_write(client, 0x116, state->is_cx25836 ? 0x04 : 0x07);
658                 break;
659
660         case VIDIOC_STREAMOFF:
661                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
662                 cx25840_write(client, 0x115, 0x00);
663                 cx25840_write(client, 0x116, 0x00);
664                 break;
665
666         case VIDIOC_LOG_STATUS:
667                 log_video_status(client);
668                 if (!state->is_cx25836)
669                         log_audio_status(client);
670                 break;
671
672         case VIDIOC_G_CTRL:
673                 return get_v4lctrl(client, (struct v4l2_control *)arg);
674
675         case VIDIOC_S_CTRL:
676                 return set_v4lctrl(client, (struct v4l2_control *)arg);
677
678         case VIDIOC_QUERYCTRL:
679         {
680                 struct v4l2_queryctrl *qc = arg;
681
682                 switch (qc->id) {
683                         case V4L2_CID_BRIGHTNESS:
684                         case V4L2_CID_CONTRAST:
685                         case V4L2_CID_SATURATION:
686                         case V4L2_CID_HUE:
687                                 return v4l2_ctrl_query_fill_std(qc);
688                         default:
689                                 break;
690                 }
691                 if (state->is_cx25836)
692                         return -EINVAL;
693
694                 switch (qc->id) {
695                         case V4L2_CID_AUDIO_VOLUME:
696                         case V4L2_CID_AUDIO_MUTE:
697                         case V4L2_CID_AUDIO_BALANCE:
698                         case V4L2_CID_AUDIO_BASS:
699                         case V4L2_CID_AUDIO_TREBLE:
700                                 return v4l2_ctrl_query_fill_std(qc);
701                         default:
702                                 return -EINVAL;
703                 }
704                 return -EINVAL;
705         }
706
707         case VIDIOC_G_STD:
708                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
709                 break;
710
711         case VIDIOC_S_STD:
712                 state->radio = 0;
713                 return set_v4lstd(client, *(v4l2_std_id *)arg);
714
715         case AUDC_SET_RADIO:
716                 state->radio = 1;
717                 break;
718
719         case VIDIOC_INT_G_VIDEO_ROUTING:
720                 route->input = state->vid_input;
721                 route->output = 0;
722                 break;
723
724         case VIDIOC_INT_S_VIDEO_ROUTING:
725                 return set_input(client, route->input, state->aud_input);
726
727         case VIDIOC_INT_G_AUDIO_ROUTING:
728                 if (state->is_cx25836)
729                         return -EINVAL;
730                 route->input = state->aud_input;
731                 route->output = 0;
732                 break;
733
734         case VIDIOC_INT_S_AUDIO_ROUTING:
735                 if (state->is_cx25836)
736                         return -EINVAL;
737                 return set_input(client, state->vid_input, route->input);
738
739         case VIDIOC_S_FREQUENCY:
740                 if (!state->is_cx25836) {
741                         input_change(client);
742                 }
743                 break;
744
745         case VIDIOC_G_TUNER:
746         {
747                 u8 vpres = cx25840_read(client, 0x40e) & 0x20;
748                 u8 mode;
749                 int val = 0;
750
751                 if (state->radio)
752                         break;
753
754                 vt->signal = vpres ? 0xffff : 0x0;
755                 if (state->is_cx25836)
756                         break;
757
758                 vt->capability |=
759                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
760                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
761
762                 mode = cx25840_read(client, 0x804);
763
764                 /* get rxsubchans and audmode */
765                 if ((mode & 0xf) == 1)
766                         val |= V4L2_TUNER_SUB_STEREO;
767                 else
768                         val |= V4L2_TUNER_SUB_MONO;
769
770                 if (mode == 2 || mode == 4)
771                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
772
773                 if (mode & 0x10)
774                         val |= V4L2_TUNER_SUB_SAP;
775
776                 vt->rxsubchans = val;
777                 vt->audmode = state->audmode;
778                 break;
779         }
780
781         case VIDIOC_S_TUNER:
782                 if (state->radio || state->is_cx25836)
783                         break;
784
785                 switch (vt->audmode) {
786                 case V4L2_TUNER_MODE_MONO:
787                         /* mono      -> mono
788                            stereo    -> mono
789                            bilingual -> lang1 */
790                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
791                         break;
792                 case V4L2_TUNER_MODE_STEREO:
793                 case V4L2_TUNER_MODE_LANG1:
794                         /* mono      -> mono
795                            stereo    -> stereo
796                            bilingual -> lang1 */
797                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
798                         break;
799                 case V4L2_TUNER_MODE_LANG1_LANG2:
800                         /* mono      -> mono
801                            stereo    -> stereo
802                            bilingual -> lang1/lang2 */
803                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
804                         break;
805                 case V4L2_TUNER_MODE_LANG2:
806                         /* mono      -> mono
807                            stereo    -> stereo
808                            bilingual -> lang2 */
809                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
810                         break;
811                 default:
812                         return -EINVAL;
813                 }
814                 state->audmode = vt->audmode;
815                 break;
816
817         case VIDIOC_G_FMT:
818                 return get_v4lfmt(client, (struct v4l2_format *)arg);
819
820         case VIDIOC_S_FMT:
821                 return set_v4lfmt(client, (struct v4l2_format *)arg);
822
823         case VIDIOC_INT_RESET:
824                 if (state->is_cx25836)
825                         cx25836_initialize(client);
826                 else
827                         cx25840_initialize(client, 0);
828                 break;
829
830         case VIDIOC_INT_G_CHIP_IDENT:
831                 *(enum v4l2_chip_ident *)arg = state->id;
832                 break;
833
834         default:
835                 return -EINVAL;
836         }
837
838         return 0;
839 }
840
841 /* ----------------------------------------------------------------------- */
842
843 static struct i2c_driver i2c_driver_cx25840;
844
845 static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
846                                  int kind)
847 {
848         struct i2c_client *client;
849         struct cx25840_state *state;
850         enum v4l2_chip_ident id;
851         u16 device_id;
852
853         /* Check if the adapter supports the needed features
854          * Not until kernel version 2.6.11 did the bit-algo
855          * correctly report that it would do an I2C-level xfer */
856         if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
857                 return 0;
858
859         state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
860         if (state == 0)
861                 return -ENOMEM;
862
863         client = &state->c;
864         client->addr = address;
865         client->adapter = adapter;
866         client->driver = &i2c_driver_cx25840;
867         snprintf(client->name, sizeof(client->name) - 1, "cx25840");
868
869         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", address << 1);
870
871         device_id = cx25840_read(client, 0x101) << 8;
872         device_id |= cx25840_read(client, 0x100);
873
874         /* The high byte of the device ID should be
875          * 0x83 for the cx2583x and 0x84 for the cx2584x */
876         if ((device_id & 0xff00) == 0x8300) {
877                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
878                 state->is_cx25836 = 1;
879         }
880         else if ((device_id & 0xff00) == 0x8400) {
881                 id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
882                 state->is_cx25836 = 0;
883         }
884         else {
885                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
886                 kfree(state);
887                 return 0;
888         }
889
890         /* Note: revision '(device_id & 0x0f) == 2' was never built. The
891            marking skips from 0x1 == 22 to 0x3 == 23. */
892         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
893                     (device_id & 0xfff0) >> 4,
894                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : (device_id & 0x0f),
895                     address << 1, adapter->name);
896
897         i2c_set_clientdata(client, state);
898         state->vid_input = CX25840_COMPOSITE7;
899         state->aud_input = CX25840_AUDIO8;
900         state->audclk_freq = 48000;
901         state->pvr150_workaround = 0;
902         state->audmode = V4L2_TUNER_MODE_LANG1;
903         state->vbi_line_offset = 8;
904         state->id = id;
905
906         i2c_attach_client(client);
907
908         if (state->is_cx25836)
909                 cx25836_initialize(client);
910         else
911                 cx25840_initialize(client, 1);
912
913         return 0;
914 }
915
916 static int cx25840_attach_adapter(struct i2c_adapter *adapter)
917 {
918         if (adapter->class & I2C_CLASS_TV_ANALOG)
919                 return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
920         return 0;
921 }
922
923 static int cx25840_detach_client(struct i2c_client *client)
924 {
925         struct cx25840_state *state = i2c_get_clientdata(client);
926         int err;
927
928         err = i2c_detach_client(client);
929         if (err) {
930                 return err;
931         }
932
933         kfree(state);
934
935         return 0;
936 }
937
938 /* ----------------------------------------------------------------------- */
939
940 static struct i2c_driver i2c_driver_cx25840 = {
941         .driver = {
942                 .name = "cx25840",
943         },
944         .id = I2C_DRIVERID_CX25840,
945         .attach_adapter = cx25840_attach_adapter,
946         .detach_client = cx25840_detach_client,
947         .command = cx25840_command,
948 };
949
950
951 static int __init m__init(void)
952 {
953         return i2c_add_driver(&i2c_driver_cx25840);
954 }
955
956 static void __exit m__exit(void)
957 {
958         i2c_del_driver(&i2c_driver_cx25840);
959 }
960
961 module_init(m__init);
962 module_exit(m__exit);
963
964 /* ----------------------------------------------------------------------- */
965
966 static void log_video_status(struct i2c_client *client)
967 {
968         static const char *const fmt_strs[] = {
969                 "0x0",
970                 "NTSC-M", "NTSC-J", "NTSC-4.43",
971                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
972                 "0x9", "0xA", "0xB",
973                 "SECAM",
974                 "0xD", "0xE", "0xF"
975         };
976
977         struct cx25840_state *state = i2c_get_clientdata(client);
978         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
979         u8 gen_stat1 = cx25840_read(client, 0x40d);
980         u8 gen_stat2 = cx25840_read(client, 0x40e);
981         int vid_input = state->vid_input;
982
983         v4l_info(client, "Video signal:              %spresent\n",
984                     (gen_stat2 & 0x20) ? "" : "not ");
985         v4l_info(client, "Detected format:           %s\n",
986                     fmt_strs[gen_stat1 & 0xf]);
987
988         v4l_info(client, "Specified standard:        %s\n",
989                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
990
991         if (vid_input >= CX25840_COMPOSITE1 &&
992             vid_input <= CX25840_COMPOSITE8) {
993                 v4l_info(client, "Specified video input:     Composite %d\n",
994                         vid_input - CX25840_COMPOSITE1 + 1);
995         } else {
996                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
997                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
998         }
999
1000         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
1001 }
1002
1003 /* ----------------------------------------------------------------------- */
1004
1005 static void log_audio_status(struct i2c_client *client)
1006 {
1007         struct cx25840_state *state = i2c_get_clientdata(client);
1008         u8 download_ctl = cx25840_read(client, 0x803);
1009         u8 mod_det_stat0 = cx25840_read(client, 0x804);
1010         u8 mod_det_stat1 = cx25840_read(client, 0x805);
1011         u8 audio_config = cx25840_read(client, 0x808);
1012         u8 pref_mode = cx25840_read(client, 0x809);
1013         u8 afc0 = cx25840_read(client, 0x80b);
1014         u8 mute_ctl = cx25840_read(client, 0x8d3);
1015         int aud_input = state->aud_input;
1016         char *p;
1017
1018         switch (mod_det_stat0) {
1019         case 0x00: p = "mono"; break;
1020         case 0x01: p = "stereo"; break;
1021         case 0x02: p = "dual"; break;
1022         case 0x04: p = "tri"; break;
1023         case 0x10: p = "mono with SAP"; break;
1024         case 0x11: p = "stereo with SAP"; break;
1025         case 0x12: p = "dual with SAP"; break;
1026         case 0x14: p = "tri with SAP"; break;
1027         case 0xfe: p = "forced mode"; break;
1028         default: p = "not defined";
1029         }
1030         v4l_info(client, "Detected audio mode:       %s\n", p);
1031
1032         switch (mod_det_stat1) {
1033         case 0x00: p = "not defined"; break;
1034         case 0x01: p = "EIAJ"; break;
1035         case 0x02: p = "A2-M"; break;
1036         case 0x03: p = "A2-BG"; break;
1037         case 0x04: p = "A2-DK1"; break;
1038         case 0x05: p = "A2-DK2"; break;
1039         case 0x06: p = "A2-DK3"; break;
1040         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
1041         case 0x08: p = "AM-L"; break;
1042         case 0x09: p = "NICAM-BG"; break;
1043         case 0x0a: p = "NICAM-DK"; break;
1044         case 0x0b: p = "NICAM-I"; break;
1045         case 0x0c: p = "NICAM-L"; break;
1046         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
1047         case 0x0e: p = "IF FM Radio"; break;
1048         case 0x0f: p = "BTSC"; break;
1049         case 0x10: p = "high-deviation FM"; break;
1050         case 0x11: p = "very high-deviation FM"; break;
1051         case 0xfd: p = "unknown audio standard"; break;
1052         case 0xfe: p = "forced audio standard"; break;
1053         case 0xff: p = "no detected audio standard"; break;
1054         default: p = "not defined";
1055         }
1056         v4l_info(client, "Detected audio standard:   %s\n", p);
1057         v4l_info(client, "Audio muted:               %s\n",
1058                     (mute_ctl & 0x2) ? "yes" : "no");
1059         v4l_info(client, "Audio microcontroller:     %s\n",
1060                     (download_ctl & 0x10) ? "running" : "stopped");
1061
1062         switch (audio_config >> 4) {
1063         case 0x00: p = "undefined"; break;
1064         case 0x01: p = "BTSC"; break;
1065         case 0x02: p = "EIAJ"; break;
1066         case 0x03: p = "A2-M"; break;
1067         case 0x04: p = "A2-BG"; break;
1068         case 0x05: p = "A2-DK1"; break;
1069         case 0x06: p = "A2-DK2"; break;
1070         case 0x07: p = "A2-DK3"; break;
1071         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
1072         case 0x09: p = "AM-L"; break;
1073         case 0x0a: p = "NICAM-BG"; break;
1074         case 0x0b: p = "NICAM-DK"; break;
1075         case 0x0c: p = "NICAM-I"; break;
1076         case 0x0d: p = "NICAM-L"; break;
1077         case 0x0e: p = "FM radio"; break;
1078         case 0x0f: p = "automatic detection"; break;
1079         default: p = "undefined";
1080         }
1081         v4l_info(client, "Configured audio standard: %s\n", p);
1082
1083         if ((audio_config >> 4) < 0xF) {
1084                 switch (audio_config & 0xF) {
1085                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
1086                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
1087                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
1088                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
1089                 case 0x04: p = "STEREO"; break;
1090                 case 0x05: p = "DUAL1 (AB)"; break;
1091                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
1092                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
1093                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
1094                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
1095                 case 0x0a: p = "SAP"; break;
1096                 default: p = "undefined";
1097                 }
1098                 v4l_info(client, "Configured audio mode:     %s\n", p);
1099         } else {
1100                 switch (audio_config & 0xF) {
1101                 case 0x00: p = "BG"; break;
1102                 case 0x01: p = "DK1"; break;
1103                 case 0x02: p = "DK2"; break;
1104                 case 0x03: p = "DK3"; break;
1105                 case 0x04: p = "I"; break;
1106                 case 0x05: p = "L"; break;
1107                 case 0x06: p = "BTSC"; break;
1108                 case 0x07: p = "EIAJ"; break;
1109                 case 0x08: p = "A2-M"; break;
1110                 case 0x09: p = "FM Radio"; break;
1111                 case 0x0f: p = "automatic standard and mode detection"; break;
1112                 default: p = "undefined";
1113                 }
1114                 v4l_info(client, "Configured audio system:   %s\n", p);
1115         }
1116
1117         if (aud_input) {
1118                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
1119         } else {
1120                 v4l_info(client, "Specified audio input:     External\n");
1121         }
1122
1123         switch (pref_mode & 0xf) {
1124         case 0: p = "mono/language A"; break;
1125         case 1: p = "language B"; break;
1126         case 2: p = "language C"; break;
1127         case 3: p = "analog fallback"; break;
1128         case 4: p = "stereo"; break;
1129         case 5: p = "language AC"; break;
1130         case 6: p = "language BC"; break;
1131         case 7: p = "language AB"; break;
1132         default: p = "undefined";
1133         }
1134         v4l_info(client, "Preferred audio mode:      %s\n", p);
1135
1136         if ((audio_config & 0xf) == 0xf) {
1137                 switch ((afc0 >> 3) & 0x3) {
1138                 case 0: p = "system DK"; break;
1139                 case 1: p = "system L"; break;
1140                 case 2: p = "autodetect"; break;
1141                 default: p = "undefined";
1142                 }
1143                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
1144
1145                 switch (afc0 & 0x7) {
1146                 case 0: p = "chroma"; break;
1147                 case 1: p = "BTSC"; break;
1148                 case 2: p = "EIAJ"; break;
1149                 case 3: p = "A2-M"; break;
1150                 case 4: p = "autodetect"; break;
1151                 default: p = "undefined";
1152                 }
1153                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
1154         }
1155 }