V4L/DVB (3551): Fix saturation bug. Fix NTSC->PAL standard change. Detect NTSC-KR...
[sfrench/cifs-2.6.git] / 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/audiochip.h>
35 #include <media/v4l2-common.h>
36
37 #include "cx25840.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
673         switch (cmd) {
674 #ifdef CONFIG_VIDEO_ADV_DEBUG
675         /* ioctls to allow direct access to the
676          * cx25840 registers for testing */
677         case VIDIOC_INT_G_REGISTER:
678         {
679                 struct v4l2_register *reg = arg;
680
681                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
682                         return -EINVAL;
683                 reg->val = cx25840_read(client, reg->reg & 0x0fff);
684                 break;
685         }
686
687         case VIDIOC_INT_S_REGISTER:
688         {
689                 struct v4l2_register *reg = arg;
690
691                 if (reg->i2c_id != I2C_DRIVERID_CX25840)
692                         return -EINVAL;
693                 if (!capable(CAP_SYS_ADMIN))
694                         return -EPERM;
695                 cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
696                 break;
697         }
698 #endif
699
700         case VIDIOC_INT_DECODE_VBI_LINE:
701                 return cx25840_vbi(client, cmd, arg);
702
703         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
704                 return cx25840_audio(client, cmd, arg);
705
706         case VIDIOC_STREAMON:
707                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
708                 cx25840_write(client, 0x115, 0x8c);
709                 cx25840_write(client, 0x116, 0x07);
710                 break;
711
712         case VIDIOC_STREAMOFF:
713                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
714                 cx25840_write(client, 0x115, 0x00);
715                 cx25840_write(client, 0x116, 0x00);
716                 break;
717
718         case VIDIOC_LOG_STATUS:
719                 log_status(client);
720                 break;
721
722         case VIDIOC_G_CTRL:
723                 return get_v4lctrl(client, (struct v4l2_control *)arg);
724
725         case VIDIOC_S_CTRL:
726                 return set_v4lctrl(client, (struct v4l2_control *)arg);
727
728         case VIDIOC_QUERYCTRL:
729         {
730                 struct v4l2_queryctrl *qc = arg;
731                 int i;
732
733                 for (i = 0; i < ARRAY_SIZE(cx25840_qctrl); i++)
734                         if (qc->id && qc->id == cx25840_qctrl[i].id) {
735                                 memcpy(qc, &cx25840_qctrl[i], sizeof(*qc));
736                                 return 0;
737                         }
738                 return -EINVAL;
739         }
740
741         case VIDIOC_G_STD:
742                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
743                 break;
744
745         case VIDIOC_S_STD:
746                 state->radio = 0;
747                 return set_v4lstd(client, *(v4l2_std_id *)arg);
748
749         case AUDC_SET_RADIO:
750                 state->radio = 1;
751                 break;
752
753         case VIDIOC_G_INPUT:
754                 *(int *)arg = state->vid_input;
755                 break;
756
757         case VIDIOC_S_INPUT:
758                 return set_input(client, *(enum cx25840_video_input *)arg, state->aud_input);
759
760         case VIDIOC_S_AUDIO:
761         {
762                 struct v4l2_audio *input = arg;
763
764                 return set_input(client, state->vid_input, input->index);
765         }
766
767         case VIDIOC_G_AUDIO:
768         {
769                 struct v4l2_audio *input = arg;
770
771                 memset(input, 0, sizeof(*input));
772                 input->index = state->aud_input;
773                 input->capability = V4L2_AUDCAP_STEREO;
774                 break;
775         }
776
777         case VIDIOC_S_FREQUENCY:
778                 input_change(client);
779                 break;
780
781         case VIDIOC_G_TUNER:
782         {
783                 u8 mode = cx25840_read(client, 0x804);
784                 u8 vpres = cx25840_read(client, 0x80a) & 0x10;
785                 int val = 0;
786
787                 if (state->radio)
788                         break;
789
790                 vt->capability |=
791                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
792                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
793
794                 vt->signal = vpres ? 0xffff : 0x0;
795
796                 /* get rxsubchans and audmode */
797                 if ((mode & 0xf) == 1)
798                         val |= V4L2_TUNER_SUB_STEREO;
799                 else
800                         val |= V4L2_TUNER_SUB_MONO;
801
802                 if (mode == 2 || mode == 4)
803                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
804
805                 if (mode & 0x10)
806                         val |= V4L2_TUNER_SUB_SAP;
807
808                 vt->rxsubchans = val;
809                 vt->audmode = state->audmode;
810                 break;
811         }
812
813         case VIDIOC_S_TUNER:
814                 if (state->radio)
815                         break;
816
817                 switch (vt->audmode) {
818                 case V4L2_TUNER_MODE_MONO:
819                         /* mono      -> mono
820                            stereo    -> mono
821                            bilingual -> lang1 */
822                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
823                         break;
824                 case V4L2_TUNER_MODE_LANG1:
825                         /* mono      -> mono
826                            stereo    -> stereo
827                            bilingual -> lang1 */
828                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
829                         break;
830                 case V4L2_TUNER_MODE_STEREO:
831                         /* mono      -> mono
832                            stereo    -> stereo
833                            bilingual -> lang1/lang2 */
834                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
835                         break;
836                 case V4L2_TUNER_MODE_LANG2:
837                         /* mono      -> mono
838                            stereo    ->stereo
839                            bilingual -> lang2 */
840                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
841                         break;
842                 default:
843                         return -EINVAL;
844                 }
845                 state->audmode = vt->audmode;
846                 break;
847
848         case VIDIOC_G_FMT:
849                 return get_v4lfmt(client, (struct v4l2_format *)arg);
850
851         case VIDIOC_S_FMT:
852                 return set_v4lfmt(client, (struct v4l2_format *)arg);
853
854         case VIDIOC_INT_RESET:
855                 cx25840_initialize(client, 0);
856                 break;
857
858         case VIDIOC_INT_G_CHIP_IDENT:
859                 *(enum v4l2_chip_ident *)arg =
860                         V4L2_IDENT_CX25840 + ((cx25840_read(client, 0x100) >> 4) & 0xf);
861                 break;
862
863         default:
864                 return -EINVAL;
865         }
866
867         return 0;
868 }
869
870 /* ----------------------------------------------------------------------- */
871
872 static struct i2c_driver i2c_driver_cx25840;
873
874 static int cx25840_detect_client(struct i2c_adapter *adapter, int address,
875                                  int kind)
876 {
877         struct i2c_client *client;
878         struct cx25840_state *state;
879         u16 device_id;
880
881         /* Check if the adapter supports the needed features
882          * Not until kernel version 2.6.11 did the bit-algo
883          * correctly report that it would do an I2C-level xfer */
884         if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
885                 return 0;
886
887         client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
888         if (client == 0)
889                 return -ENOMEM;
890
891         client->addr = address;
892         client->adapter = adapter;
893         client->driver = &i2c_driver_cx25840;
894         snprintf(client->name, sizeof(client->name) - 1, "cx25840");
895
896         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", address << 1);
897
898         device_id = cx25840_read(client, 0x101) << 8;
899         device_id |= cx25840_read(client, 0x100);
900
901         /* The high byte of the device ID should be
902          * 0x84 if chip is present */
903         if ((device_id & 0xff00) != 0x8400) {
904                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
905                 kfree(client);
906                 return 0;
907         }
908
909         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
910                     (device_id & 0xfff0) >> 4,
911                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : 3,
912                     address << 1, adapter->name);
913
914         state = kmalloc(sizeof(struct cx25840_state), GFP_KERNEL);
915         if (state == NULL) {
916                 kfree(client);
917                 return -ENOMEM;
918         }
919
920         i2c_set_clientdata(client, state);
921         memset(state, 0, sizeof(struct cx25840_state));
922         state->vid_input = CX25840_COMPOSITE7;
923         state->aud_input = CX25840_AUDIO8;
924         state->audclk_freq = 48000;
925         state->pvr150_workaround = 0;
926         state->audmode = V4L2_TUNER_MODE_LANG1;
927
928         cx25840_initialize(client, 1);
929
930         i2c_attach_client(client);
931
932         return 0;
933 }
934
935 static int cx25840_attach_adapter(struct i2c_adapter *adapter)
936 {
937         if (adapter->class & I2C_CLASS_TV_ANALOG)
938                 return i2c_probe(adapter, &addr_data, &cx25840_detect_client);
939         return 0;
940 }
941
942 static int cx25840_detach_client(struct i2c_client *client)
943 {
944         struct cx25840_state *state = i2c_get_clientdata(client);
945         int err;
946
947         err = i2c_detach_client(client);
948         if (err) {
949                 return err;
950         }
951
952         kfree(state);
953         kfree(client);
954
955         return 0;
956 }
957
958 /* ----------------------------------------------------------------------- */
959
960 static struct i2c_driver i2c_driver_cx25840 = {
961         .driver = {
962                 .name = "cx25840",
963         },
964         .id = I2C_DRIVERID_CX25840,
965         .attach_adapter = cx25840_attach_adapter,
966         .detach_client = cx25840_detach_client,
967         .command = cx25840_command,
968 };
969
970
971 static int __init m__init(void)
972 {
973         return i2c_add_driver(&i2c_driver_cx25840);
974 }
975
976 static void __exit m__exit(void)
977 {
978         i2c_del_driver(&i2c_driver_cx25840);
979 }
980
981 module_init(m__init);
982 module_exit(m__exit);
983
984 /* ----------------------------------------------------------------------- */
985
986 static void log_status(struct i2c_client *client)
987 {
988         static const char *const fmt_strs[] = {
989                 "0x0",
990                 "NTSC-M", "NTSC-J", "NTSC-4.43",
991                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
992                 "0x9", "0xA", "0xB",
993                 "SECAM",
994                 "0xD", "0xE", "0xF"
995         };
996
997         struct cx25840_state *state = i2c_get_clientdata(client);
998         u8 microctrl_vidfmt = cx25840_read(client, 0x80a);
999         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
1000         u8 gen_stat1 = cx25840_read(client, 0x40d);
1001         u8 download_ctl = cx25840_read(client, 0x803);
1002         u8 mod_det_stat0 = cx25840_read(client, 0x804);
1003         u8 mod_det_stat1 = cx25840_read(client, 0x805);
1004         u8 audio_config = cx25840_read(client, 0x808);
1005         u8 pref_mode = cx25840_read(client, 0x809);
1006         u8 afc0 = cx25840_read(client, 0x80b);
1007         u8 mute_ctl = cx25840_read(client, 0x8d3);
1008         int vid_input = state->vid_input;
1009         int aud_input = state->aud_input;
1010         char *p;
1011
1012         v4l_info(client, "Video signal:              %spresent\n",
1013                     (microctrl_vidfmt & 0x10) ? "" : "not ");
1014         v4l_info(client, "Detected format:           %s\n",
1015                     fmt_strs[gen_stat1 & 0xf]);
1016
1017         switch (mod_det_stat0) {
1018         case 0x00: p = "mono"; break;
1019         case 0x01: p = "stereo"; break;
1020         case 0x02: p = "dual"; break;
1021         case 0x04: p = "tri"; break;
1022         case 0x10: p = "mono with SAP"; break;
1023         case 0x11: p = "stereo with SAP"; break;
1024         case 0x12: p = "dual with SAP"; break;
1025         case 0x14: p = "tri with SAP"; break;
1026         case 0xfe: p = "forced mode"; break;
1027         default: p = "not defined";
1028         }
1029         v4l_info(client, "Detected audio mode:       %s\n", p);
1030
1031         switch (mod_det_stat1) {
1032         case 0x00: p = "not defined"; break;
1033         case 0x01: p = "EIAJ"; break;
1034         case 0x02: p = "A2-M"; break;
1035         case 0x03: p = "A2-BG"; break;
1036         case 0x04: p = "A2-DK1"; break;
1037         case 0x05: p = "A2-DK2"; break;
1038         case 0x06: p = "A2-DK3"; break;
1039         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
1040         case 0x08: p = "AM-L"; break;
1041         case 0x09: p = "NICAM-BG"; break;
1042         case 0x0a: p = "NICAM-DK"; break;
1043         case 0x0b: p = "NICAM-I"; break;
1044         case 0x0c: p = "NICAM-L"; break;
1045         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
1046         case 0x0e: p = "IF FM Radio"; break;
1047         case 0x0f: p = "BTSC"; break;
1048         case 0x10: p = "high-deviation FM"; break;
1049         case 0x11: p = "very high-deviation FM"; break;
1050         case 0xfd: p = "unknown audio standard"; break;
1051         case 0xfe: p = "forced audio standard"; break;
1052         case 0xff: p = "no detected audio standard"; break;
1053         default: p = "not defined";
1054         }
1055         v4l_info(client, "Detected audio standard:   %s\n", p);
1056         v4l_info(client, "Audio muted:               %s\n",
1057                     (mute_ctl & 0x2) ? "yes" : "no");
1058         v4l_info(client, "Audio microcontroller:     %s\n",
1059                     (download_ctl & 0x10) ? "running" : "stopped");
1060
1061         switch (audio_config >> 4) {
1062         case 0x00: p = "undefined"; break;
1063         case 0x01: p = "BTSC"; break;
1064         case 0x02: p = "EIAJ"; break;
1065         case 0x03: p = "A2-M"; break;
1066         case 0x04: p = "A2-BG"; break;
1067         case 0x05: p = "A2-DK1"; break;
1068         case 0x06: p = "A2-DK2"; break;
1069         case 0x07: p = "A2-DK3"; break;
1070         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
1071         case 0x09: p = "AM-L"; break;
1072         case 0x0a: p = "NICAM-BG"; break;
1073         case 0x0b: p = "NICAM-DK"; break;
1074         case 0x0c: p = "NICAM-I"; break;
1075         case 0x0d: p = "NICAM-L"; break;
1076         case 0x0e: p = "FM radio"; break;
1077         case 0x0f: p = "automatic detection"; break;
1078         default: p = "undefined";
1079         }
1080         v4l_info(client, "Configured audio standard: %s\n", p);
1081
1082         if ((audio_config >> 4) < 0xF) {
1083                 switch (audio_config & 0xF) {
1084                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
1085                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
1086                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
1087                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
1088                 case 0x04: p = "STEREO"; break;
1089                 case 0x05: p = "DUAL1 (AB)"; break;
1090                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
1091                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
1092                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
1093                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
1094                 case 0x0a: p = "SAP"; break;
1095                 default: p = "undefined";
1096                 }
1097                 v4l_info(client, "Configured audio mode:     %s\n", p);
1098         } else {
1099                 switch (audio_config & 0xF) {
1100                 case 0x00: p = "BG"; break;
1101                 case 0x01: p = "DK1"; break;
1102                 case 0x02: p = "DK2"; break;
1103                 case 0x03: p = "DK3"; break;
1104                 case 0x04: p = "I"; break;
1105                 case 0x05: p = "L"; break;
1106                 case 0x06: p = "BTSC"; break;
1107                 case 0x07: p = "EIAJ"; break;
1108                 case 0x08: p = "A2-M"; break;
1109                 case 0x09: p = "FM Radio"; break;
1110                 case 0x0f: p = "automatic standard and mode detection"; break;
1111                 default: p = "undefined";
1112                 }
1113                 v4l_info(client, "Configured audio system:   %s\n", p);
1114         }
1115
1116         v4l_info(client, "Specified standard:        %s\n",
1117                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
1118
1119         if (vid_input >= CX25840_COMPOSITE1 &&
1120             vid_input <= CX25840_COMPOSITE8) {
1121                 v4l_info(client, "Specified video input:     Composite %d\n",
1122                         vid_input - CX25840_COMPOSITE1 + 1);
1123         } else {
1124                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
1125                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
1126         }
1127         if (aud_input) {
1128                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
1129         } else {
1130                 v4l_info(client, "Specified audio input:     External\n");
1131         }
1132
1133         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
1134
1135         switch (pref_mode & 0xf) {
1136         case 0: p = "mono/language A"; break;
1137         case 1: p = "language B"; break;
1138         case 2: p = "language C"; break;
1139         case 3: p = "analog fallback"; break;
1140         case 4: p = "stereo"; break;
1141         case 5: p = "language AC"; break;
1142         case 6: p = "language BC"; break;
1143         case 7: p = "language AB"; break;
1144         default: p = "undefined";
1145         }
1146         v4l_info(client, "Preferred audio mode:      %s\n", p);
1147
1148         if ((audio_config & 0xf) == 0xf) {
1149                 switch ((afc0 >> 3) & 0x3) {
1150                 case 0: p = "system DK"; break;
1151                 case 1: p = "system L"; break;
1152                 case 2: p = "autodetect"; break;
1153                 default: p = "undefined";
1154                 }
1155                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
1156
1157                 switch (afc0 & 0x7) {
1158                 case 0: p = "chroma"; break;
1159                 case 1: p = "BTSC"; break;
1160                 case 2: p = "EIAJ"; break;
1161                 case 3: p = "A2-M"; break;
1162                 case 4: p = "autodetect"; break;
1163                 default: p = "undefined";
1164                 }
1165                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
1166         }
1167 }