Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
[linux-2.6] / drivers / media / video / cx25840 / cx25840-core.c
1 /* cx25840 - Conexant CX25840 audio/video decoder driver
2  *
3  * Copyright (C) 2004 Ulf Eklund
4  *
5  * Based on the saa7115 driver and on the first verison of Chris Kennedy's
6  * cx25840 driver.
7  *
8  * Changes by Tyler Trafford <tatrafford@comcast.net>
9  *    - cleanup/rewrite for V4L2 API (2005)
10  *
11  * VBI support by Hans Verkuil <hverkuil@xs4all.nl>.
12  *
13  * NTSC sliced VBI support by Christopher Neufeld <television@cneufeld.ca>
14  * with additional fixes by Hans Verkuil <hverkuil@xs4all.nl>.
15  *
16  * CX23885 support by Steven Toth <stoth@hauppauge.com>.
17  *
18  * This program is free software; you can redistribute it and/or
19  * modify it under the terms of the GNU General Public License
20  * as published by the Free Software Foundation; either version 2
21  * of the License, or (at your option) any later version.
22  *
23  * This program is distributed in the hope that it will be useful,
24  * but WITHOUT ANY WARRANTY; without even the implied warranty of
25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
26  * GNU General Public License for more details.
27  *
28  * You should have received a copy of the GNU General Public License
29  * along with this program; if not, write to the Free Software
30  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
31  */
32
33
34 #include <linux/kernel.h>
35 #include <linux/module.h>
36 #include <linux/slab.h>
37 #include <linux/videodev2.h>
38 #include <linux/i2c.h>
39 #include <linux/delay.h>
40 #include <media/v4l2-common.h>
41 #include <media/v4l2-chip-ident.h>
42 #include <media/v4l2-i2c-drv-legacy.h>
43 #include <media/cx25840.h>
44
45 #include "cx25840-core.h"
46
47 MODULE_DESCRIPTION("Conexant CX25840 audio/video decoder driver");
48 MODULE_AUTHOR("Ulf Eklund, Chris Kennedy, Hans Verkuil, Tyler Trafford");
49 MODULE_LICENSE("GPL");
50
51 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
52
53
54 int cx25840_debug;
55
56 module_param_named(debug,cx25840_debug, int, 0644);
57
58 MODULE_PARM_DESC(debug, "Debugging messages [0=Off (default) 1=On]");
59
60 I2C_CLIENT_INSMOD;
61
62 /* ----------------------------------------------------------------------- */
63
64 int cx25840_write(struct i2c_client *client, u16 addr, u8 value)
65 {
66         u8 buffer[3];
67         buffer[0] = addr >> 8;
68         buffer[1] = addr & 0xff;
69         buffer[2] = value;
70         return i2c_master_send(client, buffer, 3);
71 }
72
73 int cx25840_write4(struct i2c_client *client, u16 addr, u32 value)
74 {
75         u8 buffer[6];
76         buffer[0] = addr >> 8;
77         buffer[1] = addr & 0xff;
78         buffer[2] = value & 0xff;
79         buffer[3] = (value >> 8) & 0xff;
80         buffer[4] = (value >> 16) & 0xff;
81         buffer[5] = value >> 24;
82         return i2c_master_send(client, buffer, 6);
83 }
84
85 u8 cx25840_read(struct i2c_client * client, u16 addr)
86 {
87         u8 buffer[2];
88         buffer[0] = addr >> 8;
89         buffer[1] = addr & 0xff;
90
91         if (i2c_master_send(client, buffer, 2) < 2)
92                 return 0;
93
94         if (i2c_master_recv(client, buffer, 1) < 1)
95                 return 0;
96
97         return buffer[0];
98 }
99
100 u32 cx25840_read4(struct i2c_client * client, u16 addr)
101 {
102         u8 buffer[4];
103         buffer[0] = addr >> 8;
104         buffer[1] = addr & 0xff;
105
106         if (i2c_master_send(client, buffer, 2) < 2)
107                 return 0;
108
109         if (i2c_master_recv(client, buffer, 4) < 4)
110                 return 0;
111
112         return (buffer[3] << 24) | (buffer[2] << 16) |
113             (buffer[1] << 8) | buffer[0];
114 }
115
116 int cx25840_and_or(struct i2c_client *client, u16 addr, unsigned and_mask,
117                    u8 or_value)
118 {
119         return cx25840_write(client, addr,
120                              (cx25840_read(client, addr) & and_mask) |
121                              or_value);
122 }
123
124 /* ----------------------------------------------------------------------- */
125
126 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
127                                                 enum cx25840_audio_input aud_input);
128
129 /* ----------------------------------------------------------------------- */
130
131 static void init_dll1(struct i2c_client *client)
132 {
133         /* This is the Hauppauge sequence used to
134          * initialize the Delay Lock Loop 1 (ADC DLL). */
135         cx25840_write(client, 0x159, 0x23);
136         cx25840_write(client, 0x15a, 0x87);
137         cx25840_write(client, 0x15b, 0x06);
138         udelay(10);
139         cx25840_write(client, 0x159, 0xe1);
140         udelay(10);
141         cx25840_write(client, 0x15a, 0x86);
142         cx25840_write(client, 0x159, 0xe0);
143         cx25840_write(client, 0x159, 0xe1);
144         cx25840_write(client, 0x15b, 0x10);
145 }
146
147 static void init_dll2(struct i2c_client *client)
148 {
149         /* This is the Hauppauge sequence used to
150          * initialize the Delay Lock Loop 2 (ADC DLL). */
151         cx25840_write(client, 0x15d, 0xe3);
152         cx25840_write(client, 0x15e, 0x86);
153         cx25840_write(client, 0x15f, 0x06);
154         udelay(10);
155         cx25840_write(client, 0x15d, 0xe1);
156         cx25840_write(client, 0x15d, 0xe0);
157         cx25840_write(client, 0x15d, 0xe1);
158 }
159
160 static void cx25836_initialize(struct i2c_client *client)
161 {
162         /* reset configuration is described on page 3-77 of the CX25836 datasheet */
163         /* 2. */
164         cx25840_and_or(client, 0x000, ~0x01, 0x01);
165         cx25840_and_or(client, 0x000, ~0x01, 0x00);
166         /* 3a. */
167         cx25840_and_or(client, 0x15a, ~0x70, 0x00);
168         /* 3b. */
169         cx25840_and_or(client, 0x15b, ~0x1e, 0x06);
170         /* 3c. */
171         cx25840_and_or(client, 0x159, ~0x02, 0x02);
172         /* 3d. */
173         udelay(10);
174         /* 3e. */
175         cx25840_and_or(client, 0x159, ~0x02, 0x00);
176         /* 3f. */
177         cx25840_and_or(client, 0x159, ~0xc0, 0xc0);
178         /* 3g. */
179         cx25840_and_or(client, 0x159, ~0x01, 0x00);
180         cx25840_and_or(client, 0x159, ~0x01, 0x01);
181         /* 3h. */
182         cx25840_and_or(client, 0x15b, ~0x1e, 0x10);
183 }
184
185 static void cx25840_work_handler(struct work_struct *work)
186 {
187         struct cx25840_state *state = container_of(work, struct cx25840_state, fw_work);
188         cx25840_loadfw(state->c);
189         wake_up(&state->fw_wait);
190 }
191
192 static void cx25840_initialize(struct i2c_client *client)
193 {
194         DEFINE_WAIT(wait);
195         struct cx25840_state *state = i2c_get_clientdata(client);
196         struct workqueue_struct *q;
197
198         /* datasheet startup in numbered steps, refer to page 3-77 */
199         /* 2. */
200         cx25840_and_or(client, 0x803, ~0x10, 0x00);
201         /* The default of this register should be 4, but I get 0 instead.
202          * Set this register to 4 manually. */
203         cx25840_write(client, 0x000, 0x04);
204         /* 3. */
205         init_dll1(client);
206         init_dll2(client);
207         cx25840_write(client, 0x136, 0x0a);
208         /* 4. */
209         cx25840_write(client, 0x13c, 0x01);
210         cx25840_write(client, 0x13c, 0x00);
211         /* 5. */
212         /* Do the firmware load in a work handler to prevent.
213            Otherwise the kernel is blocked waiting for the
214            bit-banging i2c interface to finish uploading the
215            firmware. */
216         INIT_WORK(&state->fw_work, cx25840_work_handler);
217         init_waitqueue_head(&state->fw_wait);
218         q = create_singlethread_workqueue("cx25840_fw");
219         prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
220         queue_work(q, &state->fw_work);
221         schedule();
222         finish_wait(&state->fw_wait, &wait);
223         destroy_workqueue(q);
224
225         /* 6. */
226         cx25840_write(client, 0x115, 0x8c);
227         cx25840_write(client, 0x116, 0x07);
228         cx25840_write(client, 0x118, 0x02);
229         /* 7. */
230         cx25840_write(client, 0x4a5, 0x80);
231         cx25840_write(client, 0x4a5, 0x00);
232         cx25840_write(client, 0x402, 0x00);
233         /* 8. */
234         cx25840_and_or(client, 0x401, ~0x18, 0);
235         cx25840_and_or(client, 0x4a2, ~0x10, 0x10);
236         /* steps 8c and 8d are done in change_input() */
237         /* 10. */
238         cx25840_write(client, 0x8d3, 0x1f);
239         cx25840_write(client, 0x8e3, 0x03);
240
241         cx25840_vbi_setup(client);
242
243         /* trial and error says these are needed to get audio */
244         cx25840_write(client, 0x914, 0xa0);
245         cx25840_write(client, 0x918, 0xa0);
246         cx25840_write(client, 0x919, 0x01);
247
248         /* stereo prefered */
249         cx25840_write(client, 0x809, 0x04);
250         /* AC97 shift */
251         cx25840_write(client, 0x8cf, 0x0f);
252
253         /* (re)set input */
254         set_input(client, state->vid_input, state->aud_input);
255
256         /* start microcontroller */
257         cx25840_and_or(client, 0x803, ~0x10, 0x10);
258 }
259
260 static void cx23885_initialize(struct i2c_client *client)
261 {
262         DEFINE_WAIT(wait);
263         struct cx25840_state *state = i2c_get_clientdata(client);
264         struct workqueue_struct *q;
265
266         /* Internal Reset */
267         cx25840_and_or(client, 0x102, ~0x01, 0x01);
268         cx25840_and_or(client, 0x102, ~0x01, 0x00);
269
270         /* Stop microcontroller */
271         cx25840_and_or(client, 0x803, ~0x10, 0x00);
272
273         /* DIF in reset? */
274         cx25840_write(client, 0x398, 0);
275
276         /* Trust the default xtal, no division */
277         /* This changes for the cx23888 products */
278         cx25840_write(client, 0x2, 0x76);
279
280         /* Bring down the regulator for AUX clk */
281         cx25840_write(client, 0x1, 0x40);
282
283         /* Sys PLL frac */
284         cx25840_write4(client, 0x11c, 0x01d1744c);
285
286         /* Sys PLL int */
287         cx25840_write4(client, 0x118, 0x00000416);
288
289         /* Disable DIF bypass */
290         cx25840_write4(client, 0x33c, 0x00000001);
291
292         /* DIF Src phase inc */
293         cx25840_write4(client, 0x340, 0x0df7df83);
294
295         /* Vid PLL frac */
296         cx25840_write4(client, 0x10c, 0x01b6db7b);
297
298         /* Vid PLL int */
299         cx25840_write4(client, 0x108, 0x00000512);
300
301         /* Luma */
302         cx25840_write4(client, 0x414, 0x00107d12);
303
304         /* Chroma */
305         cx25840_write4(client, 0x420, 0x3d008282);
306
307         /* Aux PLL frac */
308         cx25840_write4(client, 0x114, 0x017dbf48);
309
310         /* Aux PLL int */
311         cx25840_write4(client, 0x110, 0x000a030e);
312
313         /* ADC2 input select */
314         cx25840_write(client, 0x102, 0x10);
315
316         /* VIN1 & VIN5 */
317         cx25840_write(client, 0x103, 0x11);
318
319         /* Enable format auto detect */
320         cx25840_write(client, 0x400, 0);
321         /* Fast subchroma lock */
322         /* White crush, Chroma AGC & Chroma Killer enabled */
323         cx25840_write(client, 0x401, 0xe8);
324
325         /* Select AFE clock pad output source */
326         cx25840_write(client, 0x144, 0x05);
327
328         /* Do the firmware load in a work handler to prevent.
329            Otherwise the kernel is blocked waiting for the
330            bit-banging i2c interface to finish uploading the
331            firmware. */
332         INIT_WORK(&state->fw_work, cx25840_work_handler);
333         init_waitqueue_head(&state->fw_wait);
334         q = create_singlethread_workqueue("cx25840_fw");
335         prepare_to_wait(&state->fw_wait, &wait, TASK_UNINTERRUPTIBLE);
336         queue_work(q, &state->fw_work);
337         schedule();
338         finish_wait(&state->fw_wait, &wait);
339         destroy_workqueue(q);
340
341         cx25840_vbi_setup(client);
342
343         /* (re)set input */
344         set_input(client, state->vid_input, state->aud_input);
345
346         /* start microcontroller */
347         cx25840_and_or(client, 0x803, ~0x10, 0x10);
348 }
349
350 /* ----------------------------------------------------------------------- */
351
352 static void input_change(struct i2c_client *client)
353 {
354         struct cx25840_state *state = i2c_get_clientdata(client);
355         v4l2_std_id std = cx25840_get_v4lstd(client);
356
357         /* Follow step 8c and 8d of section 3.16 in the cx25840 datasheet */
358         if (std & V4L2_STD_SECAM) {
359                 cx25840_write(client, 0x402, 0);
360         }
361         else {
362                 cx25840_write(client, 0x402, 0x04);
363                 cx25840_write(client, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
364         }
365         cx25840_and_or(client, 0x401, ~0x60, 0);
366         cx25840_and_or(client, 0x401, ~0x60, 0x60);
367         cx25840_and_or(client, 0x810, ~0x01, 1);
368
369         if (state->radio) {
370                 cx25840_write(client, 0x808, 0xf9);
371                 cx25840_write(client, 0x80b, 0x00);
372         }
373         else if (std & V4L2_STD_525_60) {
374                 /* Certain Hauppauge PVR150 models have a hardware bug
375                    that causes audio to drop out. For these models the
376                    audio standard must be set explicitly.
377                    To be precise: it affects cards with tuner models
378                    85, 99 and 112 (model numbers from tveeprom). */
379                 int hw_fix = state->pvr150_workaround;
380
381                 if (std == V4L2_STD_NTSC_M_JP) {
382                         /* Japan uses EIAJ audio standard */
383                         cx25840_write(client, 0x808, hw_fix ? 0x2f : 0xf7);
384                 } else if (std == V4L2_STD_NTSC_M_KR) {
385                         /* South Korea uses A2 audio standard */
386                         cx25840_write(client, 0x808, hw_fix ? 0x3f : 0xf8);
387                 } else {
388                         /* Others use the BTSC audio standard */
389                         cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
390                 }
391                 cx25840_write(client, 0x80b, 0x00);
392         } else if (std & V4L2_STD_PAL) {
393                 /* Follow tuner change procedure for PAL */
394                 cx25840_write(client, 0x808, 0xff);
395                 cx25840_write(client, 0x80b, 0x10);
396         } else if (std & V4L2_STD_SECAM) {
397                 /* Select autodetect for SECAM */
398                 cx25840_write(client, 0x808, 0xff);
399                 cx25840_write(client, 0x80b, 0x10);
400         }
401
402         cx25840_and_or(client, 0x810, ~0x01, 0);
403 }
404
405 static int set_input(struct i2c_client *client, enum cx25840_video_input vid_input,
406                                                 enum cx25840_audio_input aud_input)
407 {
408         struct cx25840_state *state = i2c_get_clientdata(client);
409         u8 is_composite = (vid_input >= CX25840_COMPOSITE1 &&
410                            vid_input <= CX25840_COMPOSITE8);
411         u8 reg;
412
413         v4l_dbg(1, cx25840_debug, client,
414                 "decoder set video input %d, audio input %d\n",
415                 vid_input, aud_input);
416
417         if (vid_input >= CX25840_VIN1_CH1) {
418                 v4l_dbg(1, cx25840_debug, client, "vid_input 0x%x\n",
419                         vid_input);
420                 reg = vid_input & 0xff;
421                 if ((vid_input & CX25840_SVIDEO_ON) == CX25840_SVIDEO_ON)
422                         is_composite = 0;
423                 else
424                         is_composite = 1;
425
426                 v4l_dbg(1, cx25840_debug, client, "mux cfg 0x%x comp=%d\n",
427                         reg, is_composite);
428         } else
429         if (is_composite) {
430                 reg = 0xf0 + (vid_input - CX25840_COMPOSITE1);
431         } else {
432                 int luma = vid_input & 0xf0;
433                 int chroma = vid_input & 0xf00;
434
435                 if ((vid_input & ~0xff0) ||
436                     luma < CX25840_SVIDEO_LUMA1 || luma > CX25840_SVIDEO_LUMA4 ||
437                     chroma < CX25840_SVIDEO_CHROMA4 || chroma > CX25840_SVIDEO_CHROMA8) {
438                         v4l_err(client, "0x%04x is not a valid video input!\n",
439                                 vid_input);
440                         return -EINVAL;
441                 }
442                 reg = 0xf0 + ((luma - CX25840_SVIDEO_LUMA1) >> 4);
443                 if (chroma >= CX25840_SVIDEO_CHROMA7) {
444                         reg &= 0x3f;
445                         reg |= (chroma - CX25840_SVIDEO_CHROMA7) >> 2;
446                 } else {
447                         reg &= 0xcf;
448                         reg |= (chroma - CX25840_SVIDEO_CHROMA4) >> 4;
449                 }
450         }
451
452         /* The caller has previously prepared the correct routing
453          * configuration in reg (for the cx23885) so we have no
454          * need to attempt to flip bits for earlier av decoders.
455          */
456         if (!state->is_cx23885) {
457                 switch (aud_input) {
458                 case CX25840_AUDIO_SERIAL:
459                         /* do nothing, use serial audio input */
460                         break;
461                 case CX25840_AUDIO4: reg &= ~0x30; break;
462                 case CX25840_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
463                 case CX25840_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
464                 case CX25840_AUDIO7: reg &= ~0xc0; break;
465                 case CX25840_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
466
467                 default:
468                         v4l_err(client, "0x%04x is not a valid audio input!\n",
469                                 aud_input);
470                         return -EINVAL;
471                 }
472         }
473
474         cx25840_write(client, 0x103, reg);
475
476         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
477         cx25840_and_or(client, 0x401, ~0x6, is_composite ? 0 : 0x02);
478
479         if (!state->is_cx23885) {
480                 /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
481                 cx25840_and_or(client, 0x102, ~0x2, (reg & 0x80) == 0 ? 2 : 0);
482                 /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2&CH3 */
483                 if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
484                         cx25840_and_or(client, 0x102, ~0x4, 4);
485                 else
486                         cx25840_and_or(client, 0x102, ~0x4, 0);
487         } else {
488                 if (is_composite)
489                         /* ADC2 input select channel 2 */
490                         cx25840_and_or(client, 0x102, ~0x2, 0);
491                 else
492                         /* ADC2 input select channel 3 */
493                         cx25840_and_or(client, 0x102, ~0x2, 2);
494         }
495
496         state->vid_input = vid_input;
497         state->aud_input = aud_input;
498         if (!state->is_cx25836) {
499                 cx25840_audio_set_path(client);
500                 input_change(client);
501         }
502
503         if (state->is_cx23885) {
504                 /* Audio channel 1 src : Parallel 1 */
505                 cx25840_write(client, 0x124, 0x03);
506
507                 /* Select AFE clock pad output source */
508                 cx25840_write(client, 0x144, 0x05);
509
510                 /* I2S_IN_CTL: I2S_IN_SONY_MODE, LEFT SAMPLE on WS=1 */
511                 cx25840_write(client, 0x914, 0xa0);
512
513                 /* I2S_OUT_CTL:
514                  * I2S_IN_SONY_MODE, LEFT SAMPLE on WS=1
515                  * I2S_OUT_MASTER_MODE = Master
516                  */
517                 cx25840_write(client, 0x918, 0xa0);
518                 cx25840_write(client, 0x919, 0x01);
519         }
520
521         return 0;
522 }
523
524 /* ----------------------------------------------------------------------- */
525
526 static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
527 {
528         u8 fmt=0;       /* zero is autodetect */
529
530         /* First tests should be against specific std */
531         if (std == V4L2_STD_NTSC_M_JP) {
532                 fmt=0x2;
533         } else if (std == V4L2_STD_NTSC_443) {
534                 fmt=0x3;
535         } else if (std == V4L2_STD_PAL_M) {
536                 fmt=0x5;
537         } else if (std == V4L2_STD_PAL_N) {
538                 fmt=0x6;
539         } else if (std == V4L2_STD_PAL_Nc) {
540                 fmt=0x7;
541         } else if (std == V4L2_STD_PAL_60) {
542                 fmt=0x8;
543         } else {
544                 /* Then, test against generic ones */
545                 if (std & V4L2_STD_NTSC) {
546                         fmt=0x1;
547                 } else if (std & V4L2_STD_PAL) {
548                         fmt=0x4;
549                 } else if (std & V4L2_STD_SECAM) {
550                         fmt=0xc;
551                 }
552         }
553
554         v4l_dbg(1, cx25840_debug, client, "changing video std to fmt %i\n",fmt);
555
556         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
557            Without this PAL may display a vertical ghosting effect.
558            This happens for example with the Yuan MPC622. */
559         if (fmt >= 4 && fmt < 8) {
560                 /* Set format to NTSC-M */
561                 cx25840_and_or(client, 0x400, ~0xf, 1);
562                 /* Turn off LCOMB */
563                 cx25840_and_or(client, 0x47b, ~6, 0);
564         }
565         cx25840_and_or(client, 0x400, ~0xf, fmt);
566         cx25840_vbi_setup(client);
567         return 0;
568 }
569
570 v4l2_std_id cx25840_get_v4lstd(struct i2c_client * client)
571 {
572         struct cx25840_state *state = i2c_get_clientdata(client);
573         /* check VID_FMT_SEL first */
574         u8 fmt = cx25840_read(client, 0x400) & 0xf;
575
576         if (!fmt) {
577                 /* check AFD_FMT_STAT if set to autodetect */
578                 fmt = cx25840_read(client, 0x40d) & 0xf;
579         }
580
581         switch (fmt) {
582         case 0x1:
583         {
584                 /* if the audio std is A2-M, then this is the South Korean
585                    NTSC standard */
586                 if (!state->is_cx25836 && cx25840_read(client, 0x805) == 2)
587                         return V4L2_STD_NTSC_M_KR;
588                 return V4L2_STD_NTSC_M;
589         }
590         case 0x2: return V4L2_STD_NTSC_M_JP;
591         case 0x3: return V4L2_STD_NTSC_443;
592         case 0x4: return V4L2_STD_PAL;
593         case 0x5: return V4L2_STD_PAL_M;
594         case 0x6: return V4L2_STD_PAL_N;
595         case 0x7: return V4L2_STD_PAL_Nc;
596         case 0x8: return V4L2_STD_PAL_60;
597         case 0xc: return V4L2_STD_SECAM;
598         default: return V4L2_STD_UNKNOWN;
599         }
600 }
601
602 /* ----------------------------------------------------------------------- */
603
604 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
605 {
606         struct cx25840_state *state = i2c_get_clientdata(client);
607
608         switch (ctrl->id) {
609         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
610                 state->pvr150_workaround = ctrl->value;
611                 set_input(client, state->vid_input, state->aud_input);
612                 break;
613
614         case V4L2_CID_BRIGHTNESS:
615                 if (ctrl->value < 0 || ctrl->value > 255) {
616                         v4l_err(client, "invalid brightness setting %d\n",
617                                     ctrl->value);
618                         return -ERANGE;
619                 }
620
621                 cx25840_write(client, 0x414, ctrl->value - 128);
622                 break;
623
624         case V4L2_CID_CONTRAST:
625                 if (ctrl->value < 0 || ctrl->value > 127) {
626                         v4l_err(client, "invalid contrast setting %d\n",
627                                     ctrl->value);
628                         return -ERANGE;
629                 }
630
631                 cx25840_write(client, 0x415, ctrl->value << 1);
632                 break;
633
634         case V4L2_CID_SATURATION:
635                 if (ctrl->value < 0 || ctrl->value > 127) {
636                         v4l_err(client, "invalid saturation setting %d\n",
637                                     ctrl->value);
638                         return -ERANGE;
639                 }
640
641                 cx25840_write(client, 0x420, ctrl->value << 1);
642                 cx25840_write(client, 0x421, ctrl->value << 1);
643                 break;
644
645         case V4L2_CID_HUE:
646                 if (ctrl->value < -127 || ctrl->value > 127) {
647                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
648                         return -ERANGE;
649                 }
650
651                 cx25840_write(client, 0x422, ctrl->value);
652                 break;
653
654         case V4L2_CID_AUDIO_VOLUME:
655         case V4L2_CID_AUDIO_BASS:
656         case V4L2_CID_AUDIO_TREBLE:
657         case V4L2_CID_AUDIO_BALANCE:
658         case V4L2_CID_AUDIO_MUTE:
659                 if (state->is_cx25836)
660                         return -EINVAL;
661                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
662
663         default:
664                 return -EINVAL;
665         }
666
667         return 0;
668 }
669
670 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
671 {
672         struct cx25840_state *state = i2c_get_clientdata(client);
673
674         switch (ctrl->id) {
675         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
676                 ctrl->value = state->pvr150_workaround;
677                 break;
678         case V4L2_CID_BRIGHTNESS:
679                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
680                 break;
681         case V4L2_CID_CONTRAST:
682                 ctrl->value = cx25840_read(client, 0x415) >> 1;
683                 break;
684         case V4L2_CID_SATURATION:
685                 ctrl->value = cx25840_read(client, 0x420) >> 1;
686                 break;
687         case V4L2_CID_HUE:
688                 ctrl->value = (s8)cx25840_read(client, 0x422);
689                 break;
690         case V4L2_CID_AUDIO_VOLUME:
691         case V4L2_CID_AUDIO_BASS:
692         case V4L2_CID_AUDIO_TREBLE:
693         case V4L2_CID_AUDIO_BALANCE:
694         case V4L2_CID_AUDIO_MUTE:
695                 if (state->is_cx25836)
696                         return -EINVAL;
697                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
698         default:
699                 return -EINVAL;
700         }
701
702         return 0;
703 }
704
705 /* ----------------------------------------------------------------------- */
706
707 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
708 {
709         switch (fmt->type) {
710         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
711                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
712         default:
713                 return -EINVAL;
714         }
715
716         return 0;
717 }
718
719 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
720 {
721         struct v4l2_pix_format *pix;
722         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
723         int is_50Hz = !(cx25840_get_v4lstd(client) & V4L2_STD_525_60);
724
725         switch (fmt->type) {
726         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
727                 pix = &(fmt->fmt.pix);
728
729                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
730                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
731
732                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
733                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
734
735                 Vlines = pix->height + (is_50Hz ? 4 : 7);
736
737                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
738                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
739                         v4l_err(client, "%dx%d is not a valid size!\n",
740                                     pix->width, pix->height);
741                         return -ERANGE;
742                 }
743
744                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
745                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
746                 VSC &= 0x1fff;
747
748                 if (pix->width >= 385)
749                         filter = 0;
750                 else if (pix->width > 192)
751                         filter = 1;
752                 else if (pix->width > 96)
753                         filter = 2;
754                 else
755                         filter = 3;
756
757                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
758                             pix->width, pix->height, HSC, VSC);
759
760                 /* HSCALE=HSC */
761                 cx25840_write(client, 0x418, HSC & 0xff);
762                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
763                 cx25840_write(client, 0x41a, HSC >> 16);
764                 /* VSCALE=VSC */
765                 cx25840_write(client, 0x41c, VSC & 0xff);
766                 cx25840_write(client, 0x41d, VSC >> 8);
767                 /* VS_INTRLACE=1 VFILT=filter */
768                 cx25840_write(client, 0x41e, 0x8 | filter);
769                 break;
770
771         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
772                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
773
774         case V4L2_BUF_TYPE_VBI_CAPTURE:
775                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
776
777         default:
778                 return -EINVAL;
779         }
780
781         return 0;
782 }
783
784 /* ----------------------------------------------------------------------- */
785
786 static void log_video_status(struct i2c_client *client)
787 {
788         static const char *const fmt_strs[] = {
789                 "0x0",
790                 "NTSC-M", "NTSC-J", "NTSC-4.43",
791                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
792                 "0x9", "0xA", "0xB",
793                 "SECAM",
794                 "0xD", "0xE", "0xF"
795         };
796
797         struct cx25840_state *state = i2c_get_clientdata(client);
798         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
799         u8 gen_stat1 = cx25840_read(client, 0x40d);
800         u8 gen_stat2 = cx25840_read(client, 0x40e);
801         int vid_input = state->vid_input;
802
803         v4l_info(client, "Video signal:              %spresent\n",
804                     (gen_stat2 & 0x20) ? "" : "not ");
805         v4l_info(client, "Detected format:           %s\n",
806                     fmt_strs[gen_stat1 & 0xf]);
807
808         v4l_info(client, "Specified standard:        %s\n",
809                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
810
811         if (vid_input >= CX25840_COMPOSITE1 &&
812             vid_input <= CX25840_COMPOSITE8) {
813                 v4l_info(client, "Specified video input:     Composite %d\n",
814                         vid_input - CX25840_COMPOSITE1 + 1);
815         } else {
816                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
817                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
818         }
819
820         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
821 }
822
823 /* ----------------------------------------------------------------------- */
824
825 static void log_audio_status(struct i2c_client *client)
826 {
827         struct cx25840_state *state = i2c_get_clientdata(client);
828         u8 download_ctl = cx25840_read(client, 0x803);
829         u8 mod_det_stat0 = cx25840_read(client, 0x804);
830         u8 mod_det_stat1 = cx25840_read(client, 0x805);
831         u8 audio_config = cx25840_read(client, 0x808);
832         u8 pref_mode = cx25840_read(client, 0x809);
833         u8 afc0 = cx25840_read(client, 0x80b);
834         u8 mute_ctl = cx25840_read(client, 0x8d3);
835         int aud_input = state->aud_input;
836         char *p;
837
838         switch (mod_det_stat0) {
839         case 0x00: p = "mono"; break;
840         case 0x01: p = "stereo"; break;
841         case 0x02: p = "dual"; break;
842         case 0x04: p = "tri"; break;
843         case 0x10: p = "mono with SAP"; break;
844         case 0x11: p = "stereo with SAP"; break;
845         case 0x12: p = "dual with SAP"; break;
846         case 0x14: p = "tri with SAP"; break;
847         case 0xfe: p = "forced mode"; break;
848         default: p = "not defined";
849         }
850         v4l_info(client, "Detected audio mode:       %s\n", p);
851
852         switch (mod_det_stat1) {
853         case 0x00: p = "not defined"; break;
854         case 0x01: p = "EIAJ"; break;
855         case 0x02: p = "A2-M"; break;
856         case 0x03: p = "A2-BG"; break;
857         case 0x04: p = "A2-DK1"; break;
858         case 0x05: p = "A2-DK2"; break;
859         case 0x06: p = "A2-DK3"; break;
860         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
861         case 0x08: p = "AM-L"; break;
862         case 0x09: p = "NICAM-BG"; break;
863         case 0x0a: p = "NICAM-DK"; break;
864         case 0x0b: p = "NICAM-I"; break;
865         case 0x0c: p = "NICAM-L"; break;
866         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
867         case 0x0e: p = "IF FM Radio"; break;
868         case 0x0f: p = "BTSC"; break;
869         case 0x10: p = "high-deviation FM"; break;
870         case 0x11: p = "very high-deviation FM"; break;
871         case 0xfd: p = "unknown audio standard"; break;
872         case 0xfe: p = "forced audio standard"; break;
873         case 0xff: p = "no detected audio standard"; break;
874         default: p = "not defined";
875         }
876         v4l_info(client, "Detected audio standard:   %s\n", p);
877         v4l_info(client, "Audio muted:               %s\n",
878                     (state->unmute_volume >= 0) ? "yes" : "no");
879         v4l_info(client, "Audio microcontroller:     %s\n",
880                     (download_ctl & 0x10) ?
881                                 ((mute_ctl & 0x2) ? "detecting" : "running") : "stopped");
882
883         switch (audio_config >> 4) {
884         case 0x00: p = "undefined"; break;
885         case 0x01: p = "BTSC"; break;
886         case 0x02: p = "EIAJ"; break;
887         case 0x03: p = "A2-M"; break;
888         case 0x04: p = "A2-BG"; break;
889         case 0x05: p = "A2-DK1"; break;
890         case 0x06: p = "A2-DK2"; break;
891         case 0x07: p = "A2-DK3"; break;
892         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
893         case 0x09: p = "AM-L"; break;
894         case 0x0a: p = "NICAM-BG"; break;
895         case 0x0b: p = "NICAM-DK"; break;
896         case 0x0c: p = "NICAM-I"; break;
897         case 0x0d: p = "NICAM-L"; break;
898         case 0x0e: p = "FM radio"; break;
899         case 0x0f: p = "automatic detection"; break;
900         default: p = "undefined";
901         }
902         v4l_info(client, "Configured audio standard: %s\n", p);
903
904         if ((audio_config >> 4) < 0xF) {
905                 switch (audio_config & 0xF) {
906                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
907                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
908                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
909                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
910                 case 0x04: p = "STEREO"; break;
911                 case 0x05: p = "DUAL1 (AB)"; break;
912                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
913                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
914                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
915                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
916                 case 0x0a: p = "SAP"; break;
917                 default: p = "undefined";
918                 }
919                 v4l_info(client, "Configured audio mode:     %s\n", p);
920         } else {
921                 switch (audio_config & 0xF) {
922                 case 0x00: p = "BG"; break;
923                 case 0x01: p = "DK1"; break;
924                 case 0x02: p = "DK2"; break;
925                 case 0x03: p = "DK3"; break;
926                 case 0x04: p = "I"; break;
927                 case 0x05: p = "L"; break;
928                 case 0x06: p = "BTSC"; break;
929                 case 0x07: p = "EIAJ"; break;
930                 case 0x08: p = "A2-M"; break;
931                 case 0x09: p = "FM Radio"; break;
932                 case 0x0f: p = "automatic standard and mode detection"; break;
933                 default: p = "undefined";
934                 }
935                 v4l_info(client, "Configured audio system:   %s\n", p);
936         }
937
938         if (aud_input) {
939                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
940         } else {
941                 v4l_info(client, "Specified audio input:     External\n");
942         }
943
944         switch (pref_mode & 0xf) {
945         case 0: p = "mono/language A"; break;
946         case 1: p = "language B"; break;
947         case 2: p = "language C"; break;
948         case 3: p = "analog fallback"; break;
949         case 4: p = "stereo"; break;
950         case 5: p = "language AC"; break;
951         case 6: p = "language BC"; break;
952         case 7: p = "language AB"; break;
953         default: p = "undefined";
954         }
955         v4l_info(client, "Preferred audio mode:      %s\n", p);
956
957         if ((audio_config & 0xf) == 0xf) {
958                 switch ((afc0 >> 3) & 0x3) {
959                 case 0: p = "system DK"; break;
960                 case 1: p = "system L"; break;
961                 case 2: p = "autodetect"; break;
962                 default: p = "undefined";
963                 }
964                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
965
966                 switch (afc0 & 0x7) {
967                 case 0: p = "chroma"; break;
968                 case 1: p = "BTSC"; break;
969                 case 2: p = "EIAJ"; break;
970                 case 3: p = "A2-M"; break;
971                 case 4: p = "autodetect"; break;
972                 default: p = "undefined";
973                 }
974                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
975         }
976 }
977
978 /* ----------------------------------------------------------------------- */
979
980 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
981                            void *arg)
982 {
983         struct cx25840_state *state = i2c_get_clientdata(client);
984         struct v4l2_tuner *vt = arg;
985         struct v4l2_routing *route = arg;
986
987         /* ignore these commands */
988         switch (cmd) {
989                 case TUNER_SET_TYPE_ADDR:
990                         return 0;
991         }
992
993         if (!state->is_initialized) {
994                 v4l_dbg(1, cx25840_debug, client, "cmd %08x triggered fw load\n", cmd);
995                 /* initialize on first use */
996                 state->is_initialized = 1;
997                 if (state->is_cx25836)
998                         cx25836_initialize(client);
999                 else if (state->is_cx23885)
1000                         cx23885_initialize(client);
1001                 else
1002                         cx25840_initialize(client);
1003         }
1004
1005         switch (cmd) {
1006 #ifdef CONFIG_VIDEO_ADV_DEBUG
1007         /* ioctls to allow direct access to the
1008          * cx25840 registers for testing */
1009         case VIDIOC_DBG_G_REGISTER:
1010         case VIDIOC_DBG_S_REGISTER:
1011         {
1012                 struct v4l2_register *reg = arg;
1013
1014                 if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
1015                         return -EINVAL;
1016                 if (!capable(CAP_SYS_ADMIN))
1017                         return -EPERM;
1018
1019                 if (cmd == VIDIOC_DBG_G_REGISTER)
1020                         reg->val = cx25840_read(client, reg->reg & 0x0fff);
1021                 else
1022                         cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
1023                 break;
1024         }
1025 #endif
1026
1027         case VIDIOC_INT_DECODE_VBI_LINE:
1028                 return cx25840_vbi(client, cmd, arg);
1029
1030         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
1031                 return cx25840_audio(client, cmd, arg);
1032
1033         case VIDIOC_STREAMON:
1034                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
1035                 if (state->is_cx23885) {
1036                         u8 v = (cx25840_read(client, 0x421) | 0x0b);
1037                         cx25840_write(client, 0x421, v);
1038                 } else {
1039                         cx25840_write(client, 0x115,
1040                                 state->is_cx25836 ? 0x0c : 0x8c);
1041                         cx25840_write(client, 0x116,
1042                                 state->is_cx25836 ? 0x04 : 0x07);
1043                 }
1044                 break;
1045
1046         case VIDIOC_STREAMOFF:
1047                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
1048                 if (state->is_cx23885) {
1049                         u8 v = cx25840_read(client, 0x421) & ~(0x0b);
1050                         cx25840_write(client, 0x421, v);
1051                 } else {
1052                         cx25840_write(client, 0x115, 0x00);
1053                         cx25840_write(client, 0x116, 0x00);
1054                 }
1055                 break;
1056
1057         case VIDIOC_LOG_STATUS:
1058                 log_video_status(client);
1059                 if (!state->is_cx25836)
1060                         log_audio_status(client);
1061                 break;
1062
1063         case VIDIOC_G_CTRL:
1064                 return get_v4lctrl(client, (struct v4l2_control *)arg);
1065
1066         case VIDIOC_S_CTRL:
1067                 return set_v4lctrl(client, (struct v4l2_control *)arg);
1068
1069         case VIDIOC_QUERYCTRL:
1070         {
1071                 struct v4l2_queryctrl *qc = arg;
1072
1073                 switch (qc->id) {
1074                         case V4L2_CID_BRIGHTNESS:
1075                         case V4L2_CID_CONTRAST:
1076                         case V4L2_CID_SATURATION:
1077                         case V4L2_CID_HUE:
1078                                 return v4l2_ctrl_query_fill_std(qc);
1079                         default:
1080                                 break;
1081                 }
1082                 if (state->is_cx25836)
1083                         return -EINVAL;
1084
1085                 switch (qc->id) {
1086                         case V4L2_CID_AUDIO_VOLUME:
1087                         case V4L2_CID_AUDIO_MUTE:
1088                         case V4L2_CID_AUDIO_BALANCE:
1089                         case V4L2_CID_AUDIO_BASS:
1090                         case V4L2_CID_AUDIO_TREBLE:
1091                                 return v4l2_ctrl_query_fill_std(qc);
1092                         default:
1093                                 return -EINVAL;
1094                 }
1095                 return -EINVAL;
1096         }
1097
1098         case VIDIOC_G_STD:
1099                 *(v4l2_std_id *)arg = cx25840_get_v4lstd(client);
1100                 break;
1101
1102         case VIDIOC_S_STD:
1103                 state->radio = 0;
1104                 return set_v4lstd(client, *(v4l2_std_id *)arg);
1105
1106         case AUDC_SET_RADIO:
1107                 state->radio = 1;
1108                 break;
1109
1110         case VIDIOC_INT_G_VIDEO_ROUTING:
1111                 route->input = state->vid_input;
1112                 route->output = 0;
1113                 break;
1114
1115         case VIDIOC_INT_S_VIDEO_ROUTING:
1116                 return set_input(client, route->input, state->aud_input);
1117
1118         case VIDIOC_INT_G_AUDIO_ROUTING:
1119                 if (state->is_cx25836)
1120                         return -EINVAL;
1121                 route->input = state->aud_input;
1122                 route->output = 0;
1123                 break;
1124
1125         case VIDIOC_INT_S_AUDIO_ROUTING:
1126                 if (state->is_cx25836)
1127                         return -EINVAL;
1128                 return set_input(client, state->vid_input, route->input);
1129
1130         case VIDIOC_S_FREQUENCY:
1131                 if (!state->is_cx25836) {
1132                         input_change(client);
1133                 }
1134                 break;
1135
1136         case VIDIOC_G_TUNER:
1137         {
1138                 u8 vpres = cx25840_read(client, 0x40e) & 0x20;
1139                 u8 mode;
1140                 int val = 0;
1141
1142                 if (state->radio)
1143                         break;
1144
1145                 vt->signal = vpres ? 0xffff : 0x0;
1146                 if (state->is_cx25836)
1147                         break;
1148
1149                 vt->capability |=
1150                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
1151                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
1152
1153                 mode = cx25840_read(client, 0x804);
1154
1155                 /* get rxsubchans and audmode */
1156                 if ((mode & 0xf) == 1)
1157                         val |= V4L2_TUNER_SUB_STEREO;
1158                 else
1159                         val |= V4L2_TUNER_SUB_MONO;
1160
1161                 if (mode == 2 || mode == 4)
1162                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1163
1164                 if (mode & 0x10)
1165                         val |= V4L2_TUNER_SUB_SAP;
1166
1167                 vt->rxsubchans = val;
1168                 vt->audmode = state->audmode;
1169                 break;
1170         }
1171
1172         case VIDIOC_S_TUNER:
1173                 if (state->radio || state->is_cx25836)
1174                         break;
1175
1176                 switch (vt->audmode) {
1177                 case V4L2_TUNER_MODE_MONO:
1178                         /* mono      -> mono
1179                            stereo    -> mono
1180                            bilingual -> lang1 */
1181                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
1182                         break;
1183                 case V4L2_TUNER_MODE_STEREO:
1184                 case V4L2_TUNER_MODE_LANG1:
1185                         /* mono      -> mono
1186                            stereo    -> stereo
1187                            bilingual -> lang1 */
1188                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
1189                         break;
1190                 case V4L2_TUNER_MODE_LANG1_LANG2:
1191                         /* mono      -> mono
1192                            stereo    -> stereo
1193                            bilingual -> lang1/lang2 */
1194                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
1195                         break;
1196                 case V4L2_TUNER_MODE_LANG2:
1197                         /* mono      -> mono
1198                            stereo    -> stereo
1199                            bilingual -> lang2 */
1200                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
1201                         break;
1202                 default:
1203                         return -EINVAL;
1204                 }
1205                 state->audmode = vt->audmode;
1206                 break;
1207
1208         case VIDIOC_G_FMT:
1209                 return get_v4lfmt(client, (struct v4l2_format *)arg);
1210
1211         case VIDIOC_S_FMT:
1212                 return set_v4lfmt(client, (struct v4l2_format *)arg);
1213
1214         case VIDIOC_INT_RESET:
1215                 if (state->is_cx25836)
1216                         cx25836_initialize(client);
1217                 else if (state->is_cx23885)
1218                         cx23885_initialize(client);
1219                 else
1220                         cx25840_initialize(client);
1221                 break;
1222
1223         case VIDIOC_G_CHIP_IDENT:
1224                 return v4l2_chip_ident_i2c_client(client, arg, state->id, state->rev);
1225
1226         default:
1227                 return -EINVAL;
1228         }
1229
1230         return 0;
1231 }
1232
1233 /* ----------------------------------------------------------------------- */
1234
1235 static int cx25840_probe(struct i2c_client *client)
1236 {
1237         struct cx25840_state *state;
1238         u32 id;
1239         u16 device_id;
1240
1241         /* Check if the adapter supports the needed features */
1242         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1243                 return -EIO;
1244
1245         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", client->addr << 1);
1246
1247         device_id = cx25840_read(client, 0x101) << 8;
1248         device_id |= cx25840_read(client, 0x100);
1249         v4l_dbg(1, cx25840_debug, client, "device_id = 0x%04x\n", device_id);
1250
1251         /* The high byte of the device ID should be
1252          * 0x83 for the cx2583x and 0x84 for the cx2584x */
1253         if ((device_id & 0xff00) == 0x8300) {
1254                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1255         }
1256         else if ((device_id & 0xff00) == 0x8400) {
1257                 id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
1258         } else if (device_id == 0x0000) {
1259                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1260         } else if (device_id == 0x1313) {
1261                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1262         }
1263         else {
1264                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
1265                 return -ENODEV;
1266         }
1267
1268         state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
1269         if (state == NULL) {
1270                 return -ENOMEM;
1271         }
1272
1273         /* Note: revision '(device_id & 0x0f) == 2' was never built. The
1274            marking skips from 0x1 == 22 to 0x3 == 23. */
1275         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
1276                     (device_id & 0xfff0) >> 4,
1277                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : (device_id & 0x0f),
1278                     client->addr << 1, client->adapter->name);
1279
1280         i2c_set_clientdata(client, state);
1281         state->c = client;
1282         state->is_cx25836 = ((device_id & 0xff00) == 0x8300);
1283         state->is_cx23885 = (device_id == 0x0000) || (device_id == 0x1313);
1284         state->vid_input = CX25840_COMPOSITE7;
1285         state->aud_input = CX25840_AUDIO8;
1286         state->audclk_freq = 48000;
1287         state->pvr150_workaround = 0;
1288         state->audmode = V4L2_TUNER_MODE_LANG1;
1289         state->unmute_volume = -1;
1290         state->vbi_line_offset = 8;
1291         state->id = id;
1292         state->rev = device_id;
1293
1294         return 0;
1295 }
1296
1297 static int cx25840_remove(struct i2c_client *client)
1298 {
1299         kfree(i2c_get_clientdata(client));
1300         return 0;
1301 }
1302
1303 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
1304         .name = "cx25840",
1305         .driverid = I2C_DRIVERID_CX25840,
1306         .command = cx25840_command,
1307         .probe = cx25840_probe,
1308         .remove = cx25840_remove,
1309 };