Merge branch 'upstream'
[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  * This program is free software; you can redistribute it and/or
14  * modify it under the terms of the GNU General Public License
15  * as published by the Free Software Foundation; either version 2
16  * of the License, or (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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
26  */
27
28
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/slab.h>
32 #include <linux/videodev2.h>
33 #include <linux/i2c.h>
34 #include <media/v4l2-common.h>
35 #include <media/cx25840.h>
36
37 #include "cx25840-core.h"
38
39 MODULE_DESCRIPTION("Conexant CX25840 audio/video decoder driver");
40 MODULE_AUTHOR("Ulf Eklund, Chris Kennedy, Hans Verkuil, Tyler Trafford");
41 MODULE_LICENSE("GPL");
42
43 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
44
45
46 static int cx25840_debug;
47
48 module_param_named(debug,cx25840_debug, int, 0644);
49
50 MODULE_PARM_DESC(debug, "Debugging messages [0=Off (default) 1=On]");
51
52 I2C_CLIENT_INSMOD;
53
54 /* ----------------------------------------------------------------------- */
55
56 int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
57 {
58         u8 buffer[3];
59         buffer[0] = addr >> 8;
60         buffer[1] = addr & 0xff;
61         buffer[2] = value;
62         return i2c_master_send(client, buffer, 3);
63 }
64
65 int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
66 {
67         u8 buffer[6];
68         buffer[0] = addr >> 8;
69         buffer[1] = addr & 0xff;
70         buffer[2] = value >> 24;
71         buffer[3] = (value >> 16) & 0xff;
72         buffer[4] = (value >> 8) & 0xff;
73         buffer[5] = value & 0xff;
74         return i2c_master_send(client, buffer, 6);
75 }
76
77 u8 cx25840_read(struct i2c_client * client, u16 addr)
78 {
79         u8 buffer[2];
80         buffer[0] = addr >> 8;
81         buffer[1] = addr & 0xff;
82
83         if (i2c_master_send(client, buffer, 2) < 2)
84                 return 0;
85
86         if (i2c_master_recv(client, buffer, 1) < 1)
87                 return 0;
88
89         return buffer[0];
90 }
91
92 u32 cx25840_read4(struct i2c_client * client, u16 addr)
93 {
94         u8 buffer[4];
95         buffer[0] = addr >> 8;
96         buffer[1] = addr & 0xff;
97
98         if (i2c_master_send(client, buffer, 2) < 2)
99                 return 0;
100
101         if (i2c_master_recv(client, buffer, 4) < 4)
102                 return 0;
103
104         return (buffer[0] << 24) | (buffer[1] << 16) |
105             (buffer[2] << 8) | buffer[3];
106 }
107
108 int cx25840_and_or(struct i2c_client *client, u16 addr, u8 and_mask,
109                    u8 or_value)
110 {
111         return cx25840_write(client, addr,
112                              (cx25840_read(client, addr) & and_mask) |
113                              or_value);
114 }
115
116 /* ----------------------------------------------------------------------- */
117
118 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
119                                                 enum cx25840_audio_input aud_input);
120 static void log_status(struct i2c_client *client);
121
122 /* ----------------------------------------------------------------------- */
123
124 static void init_dll1(struct i2c_client *client)
125 {
126         /* This is the Hauppauge sequence used to
127          * initialize the Delay Lock Loop 1 (ADC DLL). */
128         cx25840_write(client, 0x159, 0x23);
129         cx25840_write(client, 0x15a, 0x87);
130         cx25840_write(client, 0x15b, 0x06);
131         cx25840_write(client, 0x159, 0xe1);
132         cx25840_write(client, 0x15a, 0x86);
133         cx25840_write(client, 0x159, 0xe0);
134         cx25840_write(client, 0x159, 0xe1);
135         cx25840_write(client, 0x15b, 0x10);
136 }
137
138 static void init_dll2(struct i2c_client *client)
139 {
140         /* This is the Hauppauge sequence used to
141          * initialize the Delay Lock Loop 2 (ADC DLL). */
142         cx25840_write(client, 0x15d, 0xe3);
143         cx25840_write(client, 0x15e, 0x86);
144         cx25840_write(client, 0x15f, 0x06);
145         cx25840_write(client, 0x15d, 0xe1);
146         cx25840_write(client, 0x15d, 0xe0);
147         cx25840_write(client, 0x15d, 0xe1);
148 }
149
150 static void cx25840_initialize(struct i2c_client *client, int loadfw)
151 {
152         struct cx25840_state *state = i2c_get_clientdata(client);
153
154         /* datasheet startup in numbered steps, refer to page 3-77 */
155         /* 2. */
156         cx25840_and_or(client, 0x803, ~0x10, 0x00);
157         /* The default of this register should be 4, but I get 0 instead.
158          * Set this register to 4 manually. */
159         cx25840_write(client, 0x000, 0x04);
160         /* 3. */
161         init_dll1(client);
162         init_dll2(client);
163         cx25840_write(client, 0x136, 0x0a);
164         /* 4. */
165         cx25840_write(client, 0x13c, 0x01);
166         cx25840_write(client, 0x13c, 0x00);
167         /* 5. */
168         if (loadfw)
169                 cx25840_loadfw(client);
170         /* 6. */
171         cx25840_write(client, 0x115, 0x8c);
172         cx25840_write(client, 0x116, 0x07);
173         cx25840_write(client, 0x118, 0x02);
174         /* 7. */
175         cx25840_write(client, 0x4a5, 0x80);
176         cx25840_write(client, 0x4a5, 0x00);
177         cx25840_write(client, 0x402, 0x00);
178         /* 8. */
179         cx25840_and_or(client, 0x401, ~0x18, 0);
180         cx25840_and_or(client, 0x4a2, ~0x10, 0x10);
181         /* steps 8c and 8d are done in change_input() */
182         /* 10. */
183         cx25840_write(client, 0x8d3, 0x1f);
184         cx25840_write(client, 0x8e3, 0x03);
185
186         cx25840_vbi_setup(client);
187
188         /* trial and error says these are needed to get audio */
189         cx25840_write(client, 0x914, 0xa0);
190         cx25840_write(client, 0x918, 0xa0);
191         cx25840_write(client, 0x919, 0x01);
192
193         /* stereo prefered */
194         cx25840_write(client, 0x809, 0x04);
195         /* AC97 shift */
196         cx25840_write(client, 0x8cf, 0x0f);
197
198         /* (re)set input */
199         set_input(client, state->vid_input, state->aud_input);
200
201         /* start microcontroller */
202         cx25840_and_or(client, 0x803, ~0x10, 0x10);
203 }
204
205 /* ----------------------------------------------------------------------- */
206
207 static void input_change(struct i2c_client *client)
208 {
209         struct cx25840_state *state = i2c_get_clientdata(client);
210         v4l2_std_id std = cx25840_get_v4lstd(client);
211
212         /* Follow step 8c and 8d of section 3.16 in the cx25840 datasheet */
213         if (std & V4L2_STD_SECAM) {
214                 cx25840_write(client, 0x402, 0);
215         }
216         else {
217                 cx25840_write(client, 0x402, 0x04);
218                 cx25840_write(client, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
219         }
220         cx25840_and_or(client, 0x401, ~0x60, 0);
221         cx25840_and_or(client, 0x401, ~0x60, 0x60);
222
223         /* Note: perhaps V4L2_STD_PAL_M should be handled as V4L2_STD_NTSC
224            instead of V4L2_STD_PAL. Someone needs to test this. */
225         if (std & V4L2_STD_PAL) {
226                 /* Follow tuner change procedure for PAL */
227                 cx25840_write(client, 0x808, 0xff);
228                 cx25840_write(client, 0x80b, 0x10);
229         } else if (std & V4L2_STD_SECAM) {
230                 /* Select autodetect for SECAM */
231                 cx25840_write(client, 0x808, 0xff);
232                 cx25840_write(client, 0x80b, 0x10);
233         } else if (std & V4L2_STD_NTSC) {
234                 /* Certain Hauppauge PVR150 models have a hardware bug
235                    that causes audio to drop out. For these models the
236                    audio standard must be set explicitly.
237                    To be precise: it affects cards with tuner models
238                    85, 99 and 112 (model numbers from tveeprom). */
239                 int hw_fix = state->pvr150_workaround;
240
241                 if (std == V4L2_STD_NTSC_M_JP) {
242                         /* Japan uses EIAJ audio standard */
243                         cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
244                 } else if (std == V4L2_STD_NTSC_M_KR) {
245                         /* South Korea uses A2 audio standard */
246                         cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
247                 } else {
248                         /* Others use the BTSC audio standard */
249                         cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
250                 }
251                 cx25840_write(client, 0x80b, 0x00);
252         }
253
254         if (cx25840_read(client, 0x803) & 0x10) {
255                 /* restart audio decoder microcontroller */
256                 cx25840_and_or(client, 0x803, ~0x10, 0x00);
257                 cx25840_and_or(client, 0x803, ~0x10, 0x10);
258         }
259 }
260
261 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
262                                                 enum cx25840_audio_input aud_input)
263 {
264         struct cx25840_state *state = i2c_get_clientdata(client);
265         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
266                            vid_input <= CX25840_COMPOSITE8);
267         u8 reg;
268
269         v4l_dbg(1, cx25840_debug, client, "decoder set video input %d, audio input %d\n",
270                         vid_input, aud_input);
271
272         if (is_composite) {
273                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
274         } else {
275                 int luma = vid_input & 0xf0;
276                 int chroma = vid_input & 0xf00;
277
278                 if ((vid_input & ~0xff0) ||
279                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
280                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
281                         v4l_err(client, "0x%04x is not a valid video input!\n", vid_input);
282                         return -EINVAL;
283                 }
284                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
285                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
286                         reg &= 0x3f;
287                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
288                 } else {
289                         reg &= 0xcf;
290                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
291                 }
292         }
293
294         switch (aud_input) {
295         case CX25840_AUDIO_SERIAL:
296                 /* do nothing, use serial audio input */
297                 break;
298         case CX25840_AUDIO4: reg &= ~0x30; break;
299         case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
300         case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
301         case CX25840_AUDIO7: reg &= ~0xc0; break;
302         case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
303
304         default:
305                 v4l_err(client, "0x%04x is not a valid audio input!\n", aud_input);
306                 return -EINVAL;
307         }
308
309         cx25840_write(client, 0x103, reg);
310         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
311         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
312         /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
313         cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
314         /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
315         if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
316                 cx25840_and_or(client, 0x102, ~0x4, 4);
317         else
318                 cx25840_and_or(client, 0x102, ~0x4, 0);
319
320         state->vid_input = vid_input;
321         state->aud_input = aud_input;
322         cx25840_audio_set_path(client);
323         input_change(client);
324         return 0;
325 }
326
327 /* ----------------------------------------------------------------------- */
328
329 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
330 {
331         u8 fmt=0;       /* zero is autodetect */
332
333         /* First tests should be against specific std */
334         if (std == V4L2_STD_NTSC_M_JP) {
335                 fmt=0x2;
336         } else if (std == V4L2_STD_NTSC_443) {
337                 fmt=0x3;
338         } else if (std == V4L2_STD_PAL_M) {
339                 fmt=0x5;
340         } else if (std == V4L2_STD_PAL_N) {
341                 fmt=0x6;
342         } else if (std == V4L2_STD_PAL_Nc) {
343                 fmt=0x7;
344         } else if (std == V4L2_STD_PAL_60) {
345                 fmt=0x8;
346         } else {
347                 /* Then, test against generic ones */
348                 if (std & V4L2_STD_NTSC) {
349                         fmt=0x1;
350                 } else if (std & V4L2_STD_PAL) {
351                         fmt=0x4;
352                 } else if (std & V4L2_STD_SECAM) {
353                         fmt=0xc;
354                 }
355         }
356
357         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
358            Without this PAL may display a vertical ghosting effect.
359            This happens for example with the Yuan MPC622. */
360         if (fmt >= 4 && fmt < 8) {
361                 /* Set format to NTSC-M */
362                 cx25840_and_or(client, 0x400, ~0xf, 1);
363                 /* Turn off LCOMB */
364                 cx25840_and_or(client, 0x47b, ~6, 0);
365         }
366         cx25840_and_or(client, 0x400, ~0xf, fmt);
367         cx25840_vbi_setup(client);
368         return 0;
369 }
370
371 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
372 {
373         /* check VID_FMT_SEL first */
374         u8 fmt = cx25840_read(client, 0x400) & 0xf;
375
376         if (!fmt) {
377                 /* check AFD_FMT_STAT if set to autodetect */
378                 fmt = cx25840_read(client, 0x40d) & 0xf;
379         }
380
381         switch (fmt) {
382         case 0x1:
383         {
384                 /* if the audio std is A2-M, then this is the South Korean
385                    NTSC standard */
386                 if (cx25840_read(client, 0x805) == 2)
387                         return V4L2_STD_NTSC_M_KR;
388                 return V4L2_STD_NTSC_M;
389         }
390         case 0x2: return V4L2_STD_NTSC_M_JP;
391         case 0x3: return V4L2_STD_NTSC_443;
392         case 0x4: return V4L2_STD_PAL;
393         case 0x5: return V4L2_STD_PAL_M;
394         case 0x6: return V4L2_STD_PAL_N;
395         case 0x7: return V4L2_STD_PAL_Nc;
396         case 0x8: return V4L2_STD_PAL_60;
397         case 0xc: return V4L2_STD_SECAM;
398         default: return V4L2_STD_UNKNOWN;
399         }
400 }
401
402 /* ----------------------------------------------------------------------- */
403
404 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
405 {
406         struct cx25840_state *state = i2c_get_clientdata(client);
407
408         switch (ctrl->id) {
409         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
410                 state->pvr150_workaround = ctrl->value;
411                 set_input(client, state->vid_input, state->aud_input);
412                 break;
413
414         case V4L2_CID_BRIGHTNESS:
415                 if (ctrl->value < 0 || ctrl->value > 255) {
416                         v4l_err(client, "invalid brightness setting %d\n",
417                                     ctrl->value);
418                         return -ERANGE;
419                 }
420
421                 cx25840_write(client, 0x414, ctrl->value - 128);
422                 break;
423
424         case V4L2_CID_CONTRAST:
425                 if (ctrl->value < 0 || ctrl->value > 127) {
426                         v4l_err(client, "invalid contrast setting %d\n",
427                                     ctrl->value);
428                         return -ERANGE;
429                 }
430
431                 cx25840_write(client, 0x415, ctrl->value << 1);
432                 break;
433
434         case V4L2_CID_SATURATION:
435                 if (ctrl->value < 0 || ctrl->value > 127) {
436                         v4l_err(client, "invalid saturation setting %d\n",
437                                     ctrl->value);
438                         return -ERANGE;
439                 }
440
441                 cx25840_write(client, 0x420, ctrl->value << 1);
442                 cx25840_write(client, 0x421, ctrl->value << 1);
443                 break;
444
445         case V4L2_CID_HUE:
446                 if (ctrl->value < -127 || ctrl->value > 127) {
447                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
448                         return -ERANGE;
449                 }
450
451                 cx25840_write(client, 0x422, ctrl->value);
452                 break;
453
454         case V4L2_CID_AUDIO_VOLUME:
455         case V4L2_CID_AUDIO_BASS:
456         case V4L2_CID_AUDIO_TREBLE:
457         case V4L2_CID_AUDIO_BALANCE:
458         case V4L2_CID_AUDIO_MUTE:
459                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
460
461         default:
462                 return -EINVAL;
463         }
464
465         return 0;
466 }
467
468 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
469 {
470         struct cx25840_state *state = i2c_get_clientdata(client);
471
472         switch (ctrl->id) {
473         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
474                 ctrl->value = state->pvr150_workaround;
475                 break;
476         case V4L2_CID_BRIGHTNESS:
477                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
478                 break;
479         case V4L2_CID_CONTRAST:
480                 ctrl->value = cx25840_read(client, 0x415) >> 1;
481                 break;
482         case V4L2_CID_SATURATION:
483                 ctrl->value = cx25840_read(client, 0x420) >> 1;
484                 break;
485         case V4L2_CID_HUE:
486                 ctrl->value = (s8)cx25840_read(client, 0x422);
487                 break;
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                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
494         default:
495                 return -EINVAL;
496         }
497
498         return 0;
499 }
500
501 /* ----------------------------------------------------------------------- */
502
503 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
504 {
505         switch (fmt->type) {
506         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
507                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
508         default:
509                 return -EINVAL;
510         }
511
512         return 0;
513 }
514
515 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
516 {
517         struct v4l2_pix_format *pix;
518         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
519         int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);
520
521         switch (fmt->type) {
522         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
523                 pix = &(fmt->fmt.pix);
524
525                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
526                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
527
528                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
529                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
530
531                 Vlines = pix->height + (is_pal ? 4 : 7);
532
533                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
534                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
535                         v4l_err(client, "%dx%d is not a valid size!\n",
536                                     pix->width, pix->height);
537                         return -ERANGE;
538                 }
539
540                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
541                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
542                 VSC &= 0x1fff;
543
544                 if (pix->width >= 385)
545                         filter = 0;
546                 else if (pix->width > 192)
547                         filter = 1;
548                 else if (pix->width > 96)
549                         filter = 2;
550                 else
551                         filter = 3;
552
553                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
554                             pix->width, pix->height, HSC, VSC);
555
556                 /* HSCALE=HSC */
557                 cx25840_write(client, 0x418, HSC & 0xff);
558                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
559                 cx25840_write(client, 0x41a, HSC >> 16);
560                 /* VSCALE=VSC */
561                 cx25840_write(client, 0x41c, VSC & 0xff);
562                 cx25840_write(client, 0x41d, VSC >> 8);
563                 /* VS_INTRLACE=1 VFILT=filter */
564                 cx25840_write(client, 0x41e, 0x8 | filter);
565                 break;
566
567         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
568                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
569
570         case V4L2_BUF_TYPE_VBI_CAPTURE:
571                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
572
573         default:
574                 return -EINVAL;
575         }
576
577         return 0;
578 }
579
580 /* ----------------------------------------------------------------------- */
581
582 static struct v4l2_queryctrl cx25840_qctrl[] = {
583         {
584                 .id            = V4L2_CID_BRIGHTNESS,
585                 .type          = V4L2_CTRL_TYPE_INTEGER,
586                 .name          = "Brightness",
587                 .minimum       = 0,
588                 .maximum       = 255,
589                 .step          = 1,
590                 .default_value = 128,
591                 .flags         = 0,
592         }, {
593                 .id            = V4L2_CID_CONTRAST,
594                 .type          = V4L2_CTRL_TYPE_INTEGER,
595                 .name          = "Contrast",
596                 .minimum       = 0,
597                 .maximum       = 127,
598                 .step          = 1,
599                 .default_value = 64,
600                 .flags         = 0,
601         }, {
602                 .id            = V4L2_CID_SATURATION,
603                 .type          = V4L2_CTRL_TYPE_INTEGER,
604                 .name          = "Saturation",
605                 .minimum       = 0,
606                 .maximum       = 127,
607                 .step          = 1,
608                 .default_value = 64,
609                 .flags         = 0,
610         }, {
611                 .id            = V4L2_CID_HUE,
612                 .type          = V4L2_CTRL_TYPE_INTEGER,
613                 .name          = "Hue",
614                 .minimum       = -128,
615                 .maximum       = 127,
616                 .step          = 1,
617                 .default_value = 0,
618                 .flags         = 0,
619         }, {
620                 .id            = V4L2_CID_AUDIO_VOLUME,
621                 .type          = V4L2_CTRL_TYPE_INTEGER,
622                 .name          = "Volume",
623                 .minimum       = 0,
624                 .maximum       = 65535,
625                 .step          = 65535/100,
626                 .default_value = 58880,
627                 .flags         = 0,
628         }, {
629                 .id            = V4L2_CID_AUDIO_BALANCE,
630                 .type          = V4L2_CTRL_TYPE_INTEGER,
631                 .name          = "Balance",
632                 .minimum       = 0,
633                 .maximum       = 65535,
634                 .step          = 65535/100,
635                 .default_value = 32768,
636                 .flags         = 0,
637         }, {
638                 .id            = V4L2_CID_AUDIO_MUTE,
639                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
640                 .name          = "Mute",
641                 .minimum       = 0,
642                 .maximum       = 1,
643                 .step          = 1,
644                 .default_value = 1,
645                 .flags         = 0,
646         }, {
647                 .id            = V4L2_CID_AUDIO_BASS,
648                 .type          = V4L2_CTRL_TYPE_INTEGER,
649                 .name          = "Bass",
650                 .minimum       = 0,
651                 .maximum       = 65535,
652                 .step          = 65535/100,
653                 .default_value = 32768,
654         }, {
655                 .id            = V4L2_CID_AUDIO_TREBLE,
656                 .type          = V4L2_CTRL_TYPE_INTEGER,
657                 .name          = "Treble",
658                 .minimum       = 0,
659                 .maximum       = 65535,
660                 .step          = 65535/100,
661                 .default_value = 32768,
662         },
663 };
664
665 /* ----------------------------------------------------------------------- */
666
667 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
668                            void *arg)
669 {
670         struct cx25840_state *state = i2c_get_clientdata(client);
671         struct v4l2_tuner *vt = arg;
672         struct v4l2_routing *route = arg;
673
674         switch (cmd) {
675 #ifdef CONFIG_VIDEO_ADV_DEBUG
676         /* ioctls to allow direct access to the
677          * cx25840 registers for testing */
678         case VIDIOC_INT_G_REGISTER:
679         {
680                 struct v4l2_register *reg = arg;
681
682                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
683                         return -EINVAL;
684                 reg->val = cx25840_read(client, reg->reg & 0x0fff);
685                 break;
686         }
687
688         case VIDIOC_INT_S_REGISTER:
689         {
690                 struct v4l2_register *reg = arg;
691
692                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
693                         return -EINVAL;
694                 if (!capable(CAP_SYS_ADMIN))
695                         return -EPERM;
696                 cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
697                 break;
698         }
699 #endif
700
701         case VIDIOC_INT_DECODE_VBI_LINE:
702                 return cx25840_vbi(client, cmd, arg);
703
704         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
705                 return cx25840_audio(client, cmd, arg);
706
707         case VIDIOC_STREAMON:
708                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
709                 cx25840_write(client, 0x115, 0x8c);
710                 cx25840_write(client, 0x116, 0x07);
711                 break;
712
713         case VIDIOC_STREAMOFF:
714                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
715                 cx25840_write(client, 0x115, 0x00);
716                 cx25840_write(client, 0x116, 0x00);
717                 break;
718
719         case VIDIOC_LOG_STATUS:
720                 log_status(client);
721                 break;
722
723         case VIDIOC_G_CTRL:
724                 return get_v4lctrl(client, (struct v4l2_control *)arg);
725
726         case VIDIOC_S_CTRL:
727                 return set_v4lctrl(client, (struct v4l2_control *)arg);
728
729         case VIDIOC_QUERYCTRL:
730         {
731                 struct v4l2_queryctrl *qc = arg;
732                 int i;
733
734                 for (i = 0; i < ARRAY_SIZE(cx25840_qctrl); i++)
735                         if (qc->id && qc->id == cx25840_qctrl[i].id) {
736                                 memcpy(qc, &cx25840_qctrl[i], sizeof(*qc));
737                                 return 0;
738                         }
739                 return -EINVAL;
740         }
741
742         case VIDIOC_G_STD:
743                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
744                 break;
745
746         case VIDIOC_S_STD:
747                 state->radio = 0;
748                 return set_v4lstd(client, *(v4l2_std_id *)arg);
749
750         case AUDC_SET_RADIO:
751                 state->radio = 1;
752                 break;
753
754         case VIDIOC_INT_G_VIDEO_ROUTING:
755                 route->input = state->vid_input;
756                 route->output = 0;
757                 break;
758
759         case VIDIOC_INT_S_VIDEO_ROUTING:
760                 return set_input(client, route->input, state->aud_input);
761
762         case VIDIOC_INT_G_AUDIO_ROUTING:
763                 route->input = state->aud_input;
764                 route->output = 0;
765                 break;
766
767         case VIDIOC_INT_S_AUDIO_ROUTING:
768                 return set_input(client, state->vid_input, route->input);
769
770         case VIDIOC_S_FREQUENCY:
771                 input_change(client);
772                 break;
773
774         case VIDIOC_G_TUNER:
775         {
776                 u8 mode = cx25840_read(client, 0x804);
777                 u8 vpres = cx25840_read(client, 0x80a) & 0x10;
778                 int val = 0;
779
780                 if (state->radio)
781                         break;
782
783                 vt->capability |=
784                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
785                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
786
787                 vt->signal = vpres ? 0xffff : 0x0;
788
789                 /* get rxsubchans and audmode */
790                 if ((mode & 0xf) == 1)
791                         val |= V4L2_TUNER_SUB_STEREO;
792                 else
793                         val |= V4L2_TUNER_SUB_MONO;
794
795                 if (mode == 2 || mode == 4)
796                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
797
798                 if (mode & 0x10)
799                         val |= V4L2_TUNER_SUB_SAP;
800
801                 vt->rxsubchans = val;
802                 vt->audmode = state->audmode;
803                 break;
804         }
805
806         case VIDIOC_S_TUNER:
807                 if (state->radio)
808                         break;
809
810                 switch (vt->audmode) {
811                 case V4L2_TUNER_MODE_MONO:
812                         /* mono      -> mono
813                            stereo    -> mono
814                            bilingual -> lang1 */
815                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
816                         break;
817                 case V4L2_TUNER_MODE_STEREO:
818                 case V4L2_TUNER_MODE_LANG1:
819                         /* mono      -> mono
820                            stereo    -> stereo
821                            bilingual -> lang1 */
822                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
823                         break;
824                 case V4L2_TUNER_MODE_LANG1_LANG2:
825                         /* mono      -> mono
826                            stereo    -> stereo
827                            bilingual -> lang1/lang2 */
828                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
829                         break;
830                 case V4L2_TUNER_MODE_LANG2:
831                         /* mono      -> mono
832                            stereo    -> stereo
833                            bilingual -> lang2 */
834                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
835                         break;
836                 default:
837                         return -EINVAL;
838                 }
839                 state->audmode = vt->audmode;
840                 break;
841
842         case VIDIOC_G_FMT:
843                 return get_v4lfmt(client, (struct v4l2_format *)arg);
844
845         case VIDIOC_S_FMT:
846                 return set_v4lfmt(client, (struct v4l2_format *)arg);
847
848         case VIDIOC_INT_RESET:
849                 cx25840_initialize(client, 0);
850                 break;
851
852         case VIDIOC_INT_G_CHIP_IDENT:
853                 *(enum v4l2_chip_ident *)arg =
854                         V4L2_IDENT_CX25840 + ((cx25840_read(client, 0x100) >> 4) & 0xf);
855                 break;
856
857         default:
858                 return -EINVAL;
859         }
860
861         return 0;
862 }
863
864 /* ----------------------------------------------------------------------- */
865
866 static struct i2c_driver i2c_driver_cx25840;
867
868 static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
869                                  int kind)
870 {
871         struct i2c_client *client;
872         struct cx25840_state *state;
873         u16 device_id;
874
875         /* Check if the adapter supports the needed features
876          * Not until kernel version 2.6.11 did the bit-algo
877          * correctly report that it would do an I2C-level xfer */
878         if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
879                 return 0;
880
881         client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
882         if (client == 0)
883                 return -ENOMEM;
884
885         client->addr = address;
886         client->adapter = adapter;
887         client->driver = &i2c_driver_cx25840;
888         snprintf(client->name, sizeof(client->name) - 1, "cx25840");
889
890         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", address << 1);
891
892         device_id = cx25840_read(client, 0x101) << 8;
893         device_id |= cx25840_read(client, 0x100);
894
895         /* The high byte of the device ID should be
896          * 0x84 if chip is present */
897         if ((device_id & 0xff00) != 0x8400) {
898                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
899                 kfree(client);
900                 return 0;
901         }
902
903         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
904                     (device_id & 0xfff0) >> 4,
905                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : 3,
906                     address << 1, adapter->name);
907
908         state = kmalloc(sizeof(struct cx25840_state), GFP_KERNEL);
909         if (state == NULL) {
910                 kfree(client);
911                 return -ENOMEM;
912         }
913
914         i2c_set_clientdata(client, state);
915         memset(state, 0, sizeof(struct cx25840_state));
916         state->vid_input = CX25840_COMPOSITE7;
917         state->aud_input = CX25840_AUDIO8;
918         state->audclk_freq = 48000;
919         state->pvr150_workaround = 0;
920         state->audmode = V4L2_TUNER_MODE_LANG1;
921
922         cx25840_initialize(client, 1);
923
924         i2c_attach_client(client);
925
926         return 0;
927 }
928
929 static int cx25840_attach_adapter(struct i2c_adapter *adapter)
930 {
931         if (adapter->class & I2C_CLASS_TV_ANALOG)
932                 return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
933         return 0;
934 }
935
936 static int cx25840_detach_client(struct i2c_client *client)
937 {
938         struct cx25840_state *state = i2c_get_clientdata(client);
939         int err;
940
941         err = i2c_detach_client(client);
942         if (err) {
943                 return err;
944         }
945
946         kfree(state);
947         kfree(client);
948
949         return 0;
950 }
951
952 /* ----------------------------------------------------------------------- */
953
954 static struct i2c_driver i2c_driver_cx25840 = {
955         .driver = {
956                 .name = "cx25840",
957         },
958         .id = I2C_DRIVERID_CX25840,
959         .attach_adapter = cx25840_attach_adapter,
960         .detach_client = cx25840_detach_client,
961         .command = cx25840_command,
962 };
963
964
965 static int __init m__init(void)
966 {
967         return i2c_add_driver(&i2c_driver_cx25840);
968 }
969
970 static void __exit m__exit(void)
971 {
972         i2c_del_driver(&i2c_driver_cx25840);
973 }
974
975 module_init(m__init);
976 module_exit(m__exit);
977
978 /* ----------------------------------------------------------------------- */
979
980 static void log_status(struct i2c_client *client)
981 {
982         static const char *const fmt_strs[] = {
983                 "0x0",
984                 "NTSC-M", "NTSC-J", "NTSC-4.43",
985                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
986                 "0x9", "0xA", "0xB",
987                 "SECAM",
988                 "0xD", "0xE", "0xF"
989         };
990
991         struct cx25840_state *state = i2c_get_clientdata(client);
992         u8 microctrl_vidfmt = cx25840_read(client, 0x80a);
993         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
994         u8 gen_stat1 = cx25840_read(client, 0x40d);
995         u8 download_ctl = cx25840_read(client, 0x803);
996         u8 mod_det_stat0 = cx25840_read(client, 0x804);
997         u8 mod_det_stat1 = cx25840_read(client, 0x805);
998         u8 audio_config = cx25840_read(client, 0x808);
999         u8 pref_mode = cx25840_read(client, 0x809);
1000         u8 afc0 = cx25840_read(client, 0x80b);
1001         u8 mute_ctl = cx25840_read(client, 0x8d3);
1002         int vid_input = state->vid_input;
1003         int aud_input = state->aud_input;
1004         char *p;
1005
1006         v4l_info(client, "Video signal:              %spresent\n",
1007                     (microctrl_vidfmt & 0x10) ? "" : "not ");
1008         v4l_info(client, "Detected format:           %s\n",
1009                     fmt_strs[gen_stat1 & 0xf]);
1010
1011         switch (mod_det_stat0) {
1012         case 0x00: p = "mono"; break;
1013         case 0x01: p = "stereo"; break;
1014         case 0x02: p = "dual"; break;
1015         case 0x04: p = "tri"; break;
1016         case 0x10: p = "mono with SAP"; break;
1017         case 0x11: p = "stereo with SAP"; break;
1018         case 0x12: p = "dual with SAP"; break;
1019         case 0x14: p = "tri with SAP"; break;
1020         case 0xfe: p = "forced mode"; break;
1021         default: p = "not defined";
1022         }
1023         v4l_info(client, "Detected audio mode:       %s\n", p);
1024
1025         switch (mod_det_stat1) {
1026         case 0x00: p = "not defined"; break;
1027         case 0x01: p = "EIAJ"; break;
1028         case 0x02: p = "A2-M"; break;
1029         case 0x03: p = "A2-BG"; break;
1030         case 0x04: p = "A2-DK1"; break;
1031         case 0x05: p = "A2-DK2"; break;
1032         case 0x06: p = "A2-DK3"; break;
1033         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
1034         case 0x08: p = "AM-L"; break;
1035         case 0x09: p = "NICAM-BG"; break;
1036         case 0x0a: p = "NICAM-DK"; break;
1037         case 0x0b: p = "NICAM-I"; break;
1038         case 0x0c: p = "NICAM-L"; break;
1039         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
1040         case 0x0e: p = "IF FM Radio"; break;
1041         case 0x0f: p = "BTSC"; break;
1042         case 0x10: p = "high-deviation FM"; break;
1043         case 0x11: p = "very high-deviation FM"; break;
1044         case 0xfd: p = "unknown audio standard"; break;
1045         case 0xfe: p = "forced audio standard"; break;
1046         case 0xff: p = "no detected audio standard"; break;
1047         default: p = "not defined";
1048         }
1049         v4l_info(client, "Detected audio standard:   %s\n", p);
1050         v4l_info(client, "Audio muted:               %s\n",
1051                     (mute_ctl & 0x2) ? "yes" : "no");
1052         v4l_info(client, "Audio microcontroller:     %s\n",
1053                     (download_ctl & 0x10) ? "running" : "stopped");
1054
1055         switch (audio_config >> 4) {
1056         case 0x00: p = "undefined"; break;
1057         case 0x01: p = "BTSC"; break;
1058         case 0x02: p = "EIAJ"; break;
1059         case 0x03: p = "A2-M"; break;
1060         case 0x04: p = "A2-BG"; break;
1061         case 0x05: p = "A2-DK1"; break;
1062         case 0x06: p = "A2-DK2"; break;
1063         case 0x07: p = "A2-DK3"; break;
1064         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
1065         case 0x09: p = "AM-L"; break;
1066         case 0x0a: p = "NICAM-BG"; break;
1067         case 0x0b: p = "NICAM-DK"; break;
1068         case 0x0c: p = "NICAM-I"; break;
1069         case 0x0d: p = "NICAM-L"; break;
1070         case 0x0e: p = "FM radio"; break;
1071         case 0x0f: p = "automatic detection"; break;
1072         default: p = "undefined";
1073         }
1074         v4l_info(client, "Configured audio standard: %s\n", p);
1075
1076         if ((audio_config >> 4) < 0xF) {
1077                 switch (audio_config & 0xF) {
1078                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
1079                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
1080                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
1081                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
1082                 case 0x04: p = "STEREO"; break;
1083                 case 0x05: p = "DUAL1 (AB)"; break;
1084                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
1085                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
1086                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
1087                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
1088                 case 0x0a: p = "SAP"; break;
1089                 default: p = "undefined";
1090                 }
1091                 v4l_info(client, "Configured audio mode:     %s\n", p);
1092         } else {
1093                 switch (audio_config & 0xF) {
1094                 case 0x00: p = "BG"; break;
1095                 case 0x01: p = "DK1"; break;
1096                 case 0x02: p = "DK2"; break;
1097                 case 0x03: p = "DK3"; break;
1098                 case 0x04: p = "I"; break;
1099                 case 0x05: p = "L"; break;
1100                 case 0x06: p = "BTSC"; break;
1101                 case 0x07: p = "EIAJ"; break;
1102                 case 0x08: p = "A2-M"; break;
1103                 case 0x09: p = "FM Radio"; break;
1104                 case 0x0f: p = "automatic standard and mode detection"; break;
1105                 default: p = "undefined";
1106                 }
1107                 v4l_info(client, "Configured audio system:   %s\n", p);
1108         }
1109
1110         v4l_info(client, "Specified standard:        %s\n",
1111                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
1112
1113         if (vid_input >= CX25840_COMPOSITE1 &&
1114             vid_input <= CX25840_COMPOSITE8) {
1115                 v4l_info(client, "Specified video input:     Composite %d\n",
1116                         vid_input - CX25840_COMPOSITE1 + 1);
1117         } else {
1118                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
1119                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
1120         }
1121         if (aud_input) {
1122                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
1123         } else {
1124                 v4l_info(client, "Specified audio input:     External\n");
1125         }
1126
1127         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
1128
1129         switch (pref_mode & 0xf) {
1130         case 0: p = "mono/language A"; break;
1131         case 1: p = "language B"; break;
1132         case 2: p = "language C"; break;
1133         case 3: p = "analog fallback"; break;
1134         case 4: p = "stereo"; break;
1135         case 5: p = "language AC"; break;
1136         case 6: p = "language BC"; break;
1137         case 7: p = "language AB"; break;
1138         default: p = "undefined";
1139         }
1140         v4l_info(client, "Preferred audio mode:      %s\n", p);
1141
1142         if ((audio_config & 0xf) == 0xf) {
1143                 switch ((afc0 >> 3) & 0x3) {
1144                 case 0: p = "system DK"; break;
1145                 case 1: p = "system L"; break;
1146                 case 2: p = "autodetect"; break;
1147                 default: p = "undefined";
1148                 }
1149                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
1150
1151                 switch (afc0 & 0x7) {
1152                 case 0: p = "chroma"; break;
1153                 case 1: p = "BTSC"; break;
1154                 case 2: p = "EIAJ"; break;
1155                 case 3: p = "A2-M"; break;
1156                 case 4: p = "autodetect"; break;
1157                 default: p = "undefined";
1158                 }
1159                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
1160         }
1161 }