Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[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 = state->std;
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_LUMA8 ||
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)
527 {
528         struct cx25840_state *state = i2c_get_clientdata(client);
529         u8 fmt = 0;     /* zero is autodetect */
530         u8 pal_m = 0;
531
532         /* First tests should be against specific std */
533         if (state->std == V4L2_STD_NTSC_M_JP) {
534                 fmt = 0x2;
535         } else if (state->std == V4L2_STD_NTSC_443) {
536                 fmt = 0x3;
537         } else if (state->std == V4L2_STD_PAL_M) {
538                 pal_m = 1;
539                 fmt = 0x5;
540         } else if (state->std == V4L2_STD_PAL_N) {
541                 fmt = 0x6;
542         } else if (state->std == V4L2_STD_PAL_Nc) {
543                 fmt = 0x7;
544         } else if (state->std == V4L2_STD_PAL_60) {
545                 fmt = 0x8;
546         } else {
547                 /* Then, test against generic ones */
548                 if (state->std & V4L2_STD_NTSC)
549                         fmt = 0x1;
550                 else if (state->std & V4L2_STD_PAL)
551                         fmt = 0x4;
552                 else if (state->std & V4L2_STD_SECAM)
553                         fmt = 0xc;
554         }
555
556         v4l_dbg(1, cx25840_debug, client, "changing video std to fmt %i\n",fmt);
557
558         /* Follow step 9 of section 3.16 in the cx25840 datasheet.
559            Without this PAL may display a vertical ghosting effect.
560            This happens for example with the Yuan MPC622. */
561         if (fmt >= 4 && fmt < 8) {
562                 /* Set format to NTSC-M */
563                 cx25840_and_or(client, 0x400, ~0xf, 1);
564                 /* Turn off LCOMB */
565                 cx25840_and_or(client, 0x47b, ~6, 0);
566         }
567         cx25840_and_or(client, 0x400, ~0xf, fmt);
568         cx25840_and_or(client, 0x403, ~0x3, pal_m);
569         cx25840_vbi_setup(client);
570         if (!state->is_cx25836)
571                 input_change(client);
572         return 0;
573 }
574
575 /* ----------------------------------------------------------------------- */
576
577 static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
578 {
579         struct cx25840_state *state = i2c_get_clientdata(client);
580
581         switch (ctrl->id) {
582         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
583                 state->pvr150_workaround = ctrl->value;
584                 set_input(client, state->vid_input, state->aud_input);
585                 break;
586
587         case V4L2_CID_BRIGHTNESS:
588                 if (ctrl->value < 0 || ctrl->value > 255) {
589                         v4l_err(client, "invalid brightness setting %d\n",
590                                     ctrl->value);
591                         return -ERANGE;
592                 }
593
594                 cx25840_write(client, 0x414, ctrl->value - 128);
595                 break;
596
597         case V4L2_CID_CONTRAST:
598                 if (ctrl->value < 0 || ctrl->value > 127) {
599                         v4l_err(client, "invalid contrast setting %d\n",
600                                     ctrl->value);
601                         return -ERANGE;
602                 }
603
604                 cx25840_write(client, 0x415, ctrl->value << 1);
605                 break;
606
607         case V4L2_CID_SATURATION:
608                 if (ctrl->value < 0 || ctrl->value > 127) {
609                         v4l_err(client, "invalid saturation setting %d\n",
610                                     ctrl->value);
611                         return -ERANGE;
612                 }
613
614                 cx25840_write(client, 0x420, ctrl->value << 1);
615                 cx25840_write(client, 0x421, ctrl->value << 1);
616                 break;
617
618         case V4L2_CID_HUE:
619                 if (ctrl->value < -127 || ctrl->value > 127) {
620                         v4l_err(client, "invalid hue setting %d\n", ctrl->value);
621                         return -ERANGE;
622                 }
623
624                 cx25840_write(client, 0x422, ctrl->value);
625                 break;
626
627         case V4L2_CID_AUDIO_VOLUME:
628         case V4L2_CID_AUDIO_BASS:
629         case V4L2_CID_AUDIO_TREBLE:
630         case V4L2_CID_AUDIO_BALANCE:
631         case V4L2_CID_AUDIO_MUTE:
632                 if (state->is_cx25836)
633                         return -EINVAL;
634                 return cx25840_audio(client, VIDIOC_S_CTRL, ctrl);
635
636         default:
637                 return -EINVAL;
638         }
639
640         return 0;
641 }
642
643 static int get_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
644 {
645         struct cx25840_state *state = i2c_get_clientdata(client);
646
647         switch (ctrl->id) {
648         case CX25840_CID_ENABLE_PVR150_WORKAROUND:
649                 ctrl->value = state->pvr150_workaround;
650                 break;
651         case V4L2_CID_BRIGHTNESS:
652                 ctrl->value = (s8)cx25840_read(client, 0x414) + 128;
653                 break;
654         case V4L2_CID_CONTRAST:
655                 ctrl->value = cx25840_read(client, 0x415) >> 1;
656                 break;
657         case V4L2_CID_SATURATION:
658                 ctrl->value = cx25840_read(client, 0x420) >> 1;
659                 break;
660         case V4L2_CID_HUE:
661                 ctrl->value = (s8)cx25840_read(client, 0x422);
662                 break;
663         case V4L2_CID_AUDIO_VOLUME:
664         case V4L2_CID_AUDIO_BASS:
665         case V4L2_CID_AUDIO_TREBLE:
666         case V4L2_CID_AUDIO_BALANCE:
667         case V4L2_CID_AUDIO_MUTE:
668                 if (state->is_cx25836)
669                         return -EINVAL;
670                 return cx25840_audio(client, VIDIOC_G_CTRL, ctrl);
671         default:
672                 return -EINVAL;
673         }
674
675         return 0;
676 }
677
678 /* ----------------------------------------------------------------------- */
679
680 static int get_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
681 {
682         switch (fmt->type) {
683         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
684                 return cx25840_vbi(client, VIDIOC_G_FMT, fmt);
685         default:
686                 return -EINVAL;
687         }
688
689         return 0;
690 }
691
692 static int set_v4lfmt(struct i2c_client *client, struct v4l2_format *fmt)
693 {
694         struct cx25840_state *state = i2c_get_clientdata(client);
695         struct v4l2_pix_format *pix;
696         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
697         int is_50Hz = !(state->std & V4L2_STD_525_60);
698
699         switch (fmt->type) {
700         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
701                 pix = &(fmt->fmt.pix);
702
703                 Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
704                 Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
705
706                 Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
707                 Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
708
709                 Vlines = pix->height + (is_50Hz ? 4 : 7);
710
711                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
712                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
713                         v4l_err(client, "%dx%d is not a valid size!\n",
714                                     pix->width, pix->height);
715                         return -ERANGE;
716                 }
717
718                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
719                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
720                 VSC &= 0x1fff;
721
722                 if (pix->width >= 385)
723                         filter = 0;
724                 else if (pix->width > 192)
725                         filter = 1;
726                 else if (pix->width > 96)
727                         filter = 2;
728                 else
729                         filter = 3;
730
731                 v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale  %ux%u\n",
732                             pix->width, pix->height, HSC, VSC);
733
734                 /* HSCALE=HSC */
735                 cx25840_write(client, 0x418, HSC & 0xff);
736                 cx25840_write(client, 0x419, (HSC >> 8) & 0xff);
737                 cx25840_write(client, 0x41a, HSC >> 16);
738                 /* VSCALE=VSC */
739                 cx25840_write(client, 0x41c, VSC & 0xff);
740                 cx25840_write(client, 0x41d, VSC >> 8);
741                 /* VS_INTRLACE=1 VFILT=filter */
742                 cx25840_write(client, 0x41e, 0x8 | filter);
743                 break;
744
745         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
746                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
747
748         case V4L2_BUF_TYPE_VBI_CAPTURE:
749                 return cx25840_vbi(client, VIDIOC_S_FMT, fmt);
750
751         default:
752                 return -EINVAL;
753         }
754
755         return 0;
756 }
757
758 /* ----------------------------------------------------------------------- */
759
760 static void log_video_status(struct i2c_client *client)
761 {
762         static const char *const fmt_strs[] = {
763                 "0x0",
764                 "NTSC-M", "NTSC-J", "NTSC-4.43",
765                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
766                 "0x9", "0xA", "0xB",
767                 "SECAM",
768                 "0xD", "0xE", "0xF"
769         };
770
771         struct cx25840_state *state = i2c_get_clientdata(client);
772         u8 vidfmt_sel = cx25840_read(client, 0x400) & 0xf;
773         u8 gen_stat1 = cx25840_read(client, 0x40d);
774         u8 gen_stat2 = cx25840_read(client, 0x40e);
775         int vid_input = state->vid_input;
776
777         v4l_info(client, "Video signal:              %spresent\n",
778                     (gen_stat2 & 0x20) ? "" : "not ");
779         v4l_info(client, "Detected format:           %s\n",
780                     fmt_strs[gen_stat1 & 0xf]);
781
782         v4l_info(client, "Specified standard:        %s\n",
783                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
784
785         if (vid_input >= CX25840_COMPOSITE1 &&
786             vid_input <= CX25840_COMPOSITE8) {
787                 v4l_info(client, "Specified video input:     Composite %d\n",
788                         vid_input - CX25840_COMPOSITE1 + 1);
789         } else {
790                 v4l_info(client, "Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
791                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
792         }
793
794         v4l_info(client, "Specified audioclock freq: %d Hz\n", state->audclk_freq);
795 }
796
797 /* ----------------------------------------------------------------------- */
798
799 static void log_audio_status(struct i2c_client *client)
800 {
801         struct cx25840_state *state = i2c_get_clientdata(client);
802         u8 download_ctl = cx25840_read(client, 0x803);
803         u8 mod_det_stat0 = cx25840_read(client, 0x804);
804         u8 mod_det_stat1 = cx25840_read(client, 0x805);
805         u8 audio_config = cx25840_read(client, 0x808);
806         u8 pref_mode = cx25840_read(client, 0x809);
807         u8 afc0 = cx25840_read(client, 0x80b);
808         u8 mute_ctl = cx25840_read(client, 0x8d3);
809         int aud_input = state->aud_input;
810         char *p;
811
812         switch (mod_det_stat0) {
813         case 0x00: p = "mono"; break;
814         case 0x01: p = "stereo"; break;
815         case 0x02: p = "dual"; break;
816         case 0x04: p = "tri"; break;
817         case 0x10: p = "mono with SAP"; break;
818         case 0x11: p = "stereo with SAP"; break;
819         case 0x12: p = "dual with SAP"; break;
820         case 0x14: p = "tri with SAP"; break;
821         case 0xfe: p = "forced mode"; break;
822         default: p = "not defined";
823         }
824         v4l_info(client, "Detected audio mode:       %s\n", p);
825
826         switch (mod_det_stat1) {
827         case 0x00: p = "not defined"; break;
828         case 0x01: p = "EIAJ"; break;
829         case 0x02: p = "A2-M"; break;
830         case 0x03: p = "A2-BG"; break;
831         case 0x04: p = "A2-DK1"; break;
832         case 0x05: p = "A2-DK2"; break;
833         case 0x06: p = "A2-DK3"; break;
834         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
835         case 0x08: p = "AM-L"; break;
836         case 0x09: p = "NICAM-BG"; break;
837         case 0x0a: p = "NICAM-DK"; break;
838         case 0x0b: p = "NICAM-I"; break;
839         case 0x0c: p = "NICAM-L"; break;
840         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
841         case 0x0e: p = "IF FM Radio"; break;
842         case 0x0f: p = "BTSC"; break;
843         case 0x10: p = "high-deviation FM"; break;
844         case 0x11: p = "very high-deviation FM"; break;
845         case 0xfd: p = "unknown audio standard"; break;
846         case 0xfe: p = "forced audio standard"; break;
847         case 0xff: p = "no detected audio standard"; break;
848         default: p = "not defined";
849         }
850         v4l_info(client, "Detected audio standard:   %s\n", p);
851         v4l_info(client, "Audio muted:               %s\n",
852                     (state->unmute_volume >= 0) ? "yes" : "no");
853         v4l_info(client, "Audio microcontroller:     %s\n",
854                     (download_ctl & 0x10) ?
855                                 ((mute_ctl & 0x2) ? "detecting" : "running") : "stopped");
856
857         switch (audio_config >> 4) {
858         case 0x00: p = "undefined"; break;
859         case 0x01: p = "BTSC"; break;
860         case 0x02: p = "EIAJ"; break;
861         case 0x03: p = "A2-M"; break;
862         case 0x04: p = "A2-BG"; break;
863         case 0x05: p = "A2-DK1"; break;
864         case 0x06: p = "A2-DK2"; break;
865         case 0x07: p = "A2-DK3"; break;
866         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
867         case 0x09: p = "AM-L"; break;
868         case 0x0a: p = "NICAM-BG"; break;
869         case 0x0b: p = "NICAM-DK"; break;
870         case 0x0c: p = "NICAM-I"; break;
871         case 0x0d: p = "NICAM-L"; break;
872         case 0x0e: p = "FM radio"; break;
873         case 0x0f: p = "automatic detection"; break;
874         default: p = "undefined";
875         }
876         v4l_info(client, "Configured audio standard: %s\n", p);
877
878         if ((audio_config >> 4) < 0xF) {
879                 switch (audio_config & 0xF) {
880                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
881                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
882                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
883                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
884                 case 0x04: p = "STEREO"; break;
885                 case 0x05: p = "DUAL1 (AB)"; break;
886                 case 0x06: p = "DUAL2 (AC) (FM)"; break;
887                 case 0x07: p = "DUAL3 (BC) (FM)"; break;
888                 case 0x08: p = "DUAL4 (AC) (AM)"; break;
889                 case 0x09: p = "DUAL5 (BC) (AM)"; break;
890                 case 0x0a: p = "SAP"; break;
891                 default: p = "undefined";
892                 }
893                 v4l_info(client, "Configured audio mode:     %s\n", p);
894         } else {
895                 switch (audio_config & 0xF) {
896                 case 0x00: p = "BG"; break;
897                 case 0x01: p = "DK1"; break;
898                 case 0x02: p = "DK2"; break;
899                 case 0x03: p = "DK3"; break;
900                 case 0x04: p = "I"; break;
901                 case 0x05: p = "L"; break;
902                 case 0x06: p = "BTSC"; break;
903                 case 0x07: p = "EIAJ"; break;
904                 case 0x08: p = "A2-M"; break;
905                 case 0x09: p = "FM Radio"; break;
906                 case 0x0f: p = "automatic standard and mode detection"; break;
907                 default: p = "undefined";
908                 }
909                 v4l_info(client, "Configured audio system:   %s\n", p);
910         }
911
912         if (aud_input) {
913                 v4l_info(client, "Specified audio input:     Tuner (In%d)\n", aud_input);
914         } else {
915                 v4l_info(client, "Specified audio input:     External\n");
916         }
917
918         switch (pref_mode & 0xf) {
919         case 0: p = "mono/language A"; break;
920         case 1: p = "language B"; break;
921         case 2: p = "language C"; break;
922         case 3: p = "analog fallback"; break;
923         case 4: p = "stereo"; break;
924         case 5: p = "language AC"; break;
925         case 6: p = "language BC"; break;
926         case 7: p = "language AB"; break;
927         default: p = "undefined";
928         }
929         v4l_info(client, "Preferred audio mode:      %s\n", p);
930
931         if ((audio_config & 0xf) == 0xf) {
932                 switch ((afc0 >> 3) & 0x3) {
933                 case 0: p = "system DK"; break;
934                 case 1: p = "system L"; break;
935                 case 2: p = "autodetect"; break;
936                 default: p = "undefined";
937                 }
938                 v4l_info(client, "Selected 65 MHz format:    %s\n", p);
939
940                 switch (afc0 & 0x7) {
941                 case 0: p = "chroma"; break;
942                 case 1: p = "BTSC"; break;
943                 case 2: p = "EIAJ"; break;
944                 case 3: p = "A2-M"; break;
945                 case 4: p = "autodetect"; break;
946                 default: p = "undefined";
947                 }
948                 v4l_info(client, "Selected 45 MHz format:    %s\n", p);
949         }
950 }
951
952 /* ----------------------------------------------------------------------- */
953
954 static int cx25840_command(struct i2c_client *client, unsigned int cmd,
955                            void *arg)
956 {
957         struct cx25840_state *state = i2c_get_clientdata(client);
958         struct v4l2_tuner *vt = arg;
959         struct v4l2_routing *route = arg;
960
961         /* ignore these commands */
962         switch (cmd) {
963                 case TUNER_SET_TYPE_ADDR:
964                         return 0;
965         }
966
967         if (!state->is_initialized) {
968                 v4l_dbg(1, cx25840_debug, client, "cmd %08x triggered fw load\n", cmd);
969                 /* initialize on first use */
970                 state->is_initialized = 1;
971                 if (state->is_cx25836)
972                         cx25836_initialize(client);
973                 else if (state->is_cx23885)
974                         cx23885_initialize(client);
975                 else
976                         cx25840_initialize(client);
977         }
978
979         switch (cmd) {
980 #ifdef CONFIG_VIDEO_ADV_DEBUG
981         /* ioctls to allow direct access to the
982          * cx25840 registers for testing */
983         case VIDIOC_DBG_G_REGISTER:
984         case VIDIOC_DBG_S_REGISTER:
985         {
986                 struct v4l2_register *reg = arg;
987
988                 if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
989                         return -EINVAL;
990                 if (!capable(CAP_SYS_ADMIN))
991                         return -EPERM;
992
993                 if (cmd == VIDIOC_DBG_G_REGISTER)
994                         reg->val = cx25840_read(client, reg->reg & 0x0fff);
995                 else
996                         cx25840_write(client, reg->reg & 0x0fff, reg->val & 0xff);
997                 break;
998         }
999 #endif
1000
1001         case VIDIOC_INT_DECODE_VBI_LINE:
1002                 return cx25840_vbi(client, cmd, arg);
1003
1004         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
1005                 return cx25840_audio(client, cmd, arg);
1006
1007         case VIDIOC_STREAMON:
1008                 v4l_dbg(1, cx25840_debug, client, "enable output\n");
1009                 if (state->is_cx23885) {
1010                         u8 v = (cx25840_read(client, 0x421) | 0x0b);
1011                         cx25840_write(client, 0x421, v);
1012                 } else {
1013                         cx25840_write(client, 0x115,
1014                                 state->is_cx25836 ? 0x0c : 0x8c);
1015                         cx25840_write(client, 0x116,
1016                                 state->is_cx25836 ? 0x04 : 0x07);
1017                 }
1018                 break;
1019
1020         case VIDIOC_STREAMOFF:
1021                 v4l_dbg(1, cx25840_debug, client, "disable output\n");
1022                 if (state->is_cx23885) {
1023                         u8 v = cx25840_read(client, 0x421) & ~(0x0b);
1024                         cx25840_write(client, 0x421, v);
1025                 } else {
1026                         cx25840_write(client, 0x115, 0x00);
1027                         cx25840_write(client, 0x116, 0x00);
1028                 }
1029                 break;
1030
1031         case VIDIOC_LOG_STATUS:
1032                 log_video_status(client);
1033                 if (!state->is_cx25836)
1034                         log_audio_status(client);
1035                 break;
1036
1037         case VIDIOC_G_CTRL:
1038                 return get_v4lctrl(client, (struct v4l2_control *)arg);
1039
1040         case VIDIOC_S_CTRL:
1041                 return set_v4lctrl(client, (struct v4l2_control *)arg);
1042
1043         case VIDIOC_QUERYCTRL:
1044         {
1045                 struct v4l2_queryctrl *qc = arg;
1046
1047                 switch (qc->id) {
1048                         case V4L2_CID_BRIGHTNESS:
1049                         case V4L2_CID_CONTRAST:
1050                         case V4L2_CID_SATURATION:
1051                         case V4L2_CID_HUE:
1052                                 return v4l2_ctrl_query_fill_std(qc);
1053                         default:
1054                                 break;
1055                 }
1056                 if (state->is_cx25836)
1057                         return -EINVAL;
1058
1059                 switch (qc->id) {
1060                         case V4L2_CID_AUDIO_VOLUME:
1061                         case V4L2_CID_AUDIO_MUTE:
1062                         case V4L2_CID_AUDIO_BALANCE:
1063                         case V4L2_CID_AUDIO_BASS:
1064                         case V4L2_CID_AUDIO_TREBLE:
1065                                 return v4l2_ctrl_query_fill_std(qc);
1066                         default:
1067                                 return -EINVAL;
1068                 }
1069                 return -EINVAL;
1070         }
1071
1072         case VIDIOC_G_STD:
1073                 *(v4l2_std_id *)arg = state->std;
1074                 break;
1075
1076         case VIDIOC_S_STD:
1077                 if (state->radio == 0 && state->std == *(v4l2_std_id *)arg)
1078                         return 0;
1079                 state->radio = 0;
1080                 state->std = *(v4l2_std_id *)arg;
1081                 return set_v4lstd(client);
1082
1083         case AUDC_SET_RADIO:
1084                 state->radio = 1;
1085                 break;
1086
1087         case VIDIOC_INT_G_VIDEO_ROUTING:
1088                 route->input = state->vid_input;
1089                 route->output = 0;
1090                 break;
1091
1092         case VIDIOC_INT_S_VIDEO_ROUTING:
1093                 return set_input(client, route->input, state->aud_input);
1094
1095         case VIDIOC_INT_G_AUDIO_ROUTING:
1096                 if (state->is_cx25836)
1097                         return -EINVAL;
1098                 route->input = state->aud_input;
1099                 route->output = 0;
1100                 break;
1101
1102         case VIDIOC_INT_S_AUDIO_ROUTING:
1103                 if (state->is_cx25836)
1104                         return -EINVAL;
1105                 return set_input(client, state->vid_input, route->input);
1106
1107         case VIDIOC_S_FREQUENCY:
1108                 if (!state->is_cx25836) {
1109                         input_change(client);
1110                 }
1111                 break;
1112
1113         case VIDIOC_G_TUNER:
1114         {
1115                 u8 vpres = cx25840_read(client, 0x40e) & 0x20;
1116                 u8 mode;
1117                 int val = 0;
1118
1119                 if (state->radio)
1120                         break;
1121
1122                 vt->signal = vpres ? 0xffff : 0x0;
1123                 if (state->is_cx25836)
1124                         break;
1125
1126                 vt->capability |=
1127                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
1128                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
1129
1130                 mode = cx25840_read(client, 0x804);
1131
1132                 /* get rxsubchans and audmode */
1133                 if ((mode & 0xf) == 1)
1134                         val |= V4L2_TUNER_SUB_STEREO;
1135                 else
1136                         val |= V4L2_TUNER_SUB_MONO;
1137
1138                 if (mode == 2 || mode == 4)
1139                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
1140
1141                 if (mode & 0x10)
1142                         val |= V4L2_TUNER_SUB_SAP;
1143
1144                 vt->rxsubchans = val;
1145                 vt->audmode = state->audmode;
1146                 break;
1147         }
1148
1149         case VIDIOC_S_TUNER:
1150                 if (state->radio || state->is_cx25836)
1151                         break;
1152
1153                 switch (vt->audmode) {
1154                 case V4L2_TUNER_MODE_MONO:
1155                         /* mono      -> mono
1156                            stereo    -> mono
1157                            bilingual -> lang1 */
1158                         cx25840_and_or(client, 0x809, ~0xf, 0x00);
1159                         break;
1160                 case V4L2_TUNER_MODE_STEREO:
1161                 case V4L2_TUNER_MODE_LANG1:
1162                         /* mono      -> mono
1163                            stereo    -> stereo
1164                            bilingual -> lang1 */
1165                         cx25840_and_or(client, 0x809, ~0xf, 0x04);
1166                         break;
1167                 case V4L2_TUNER_MODE_LANG1_LANG2:
1168                         /* mono      -> mono
1169                            stereo    -> stereo
1170                            bilingual -> lang1/lang2 */
1171                         cx25840_and_or(client, 0x809, ~0xf, 0x07);
1172                         break;
1173                 case V4L2_TUNER_MODE_LANG2:
1174                         /* mono      -> mono
1175                            stereo    -> stereo
1176                            bilingual -> lang2 */
1177                         cx25840_and_or(client, 0x809, ~0xf, 0x01);
1178                         break;
1179                 default:
1180                         return -EINVAL;
1181                 }
1182                 state->audmode = vt->audmode;
1183                 break;
1184
1185         case VIDIOC_G_FMT:
1186                 return get_v4lfmt(client, (struct v4l2_format *)arg);
1187
1188         case VIDIOC_S_FMT:
1189                 return set_v4lfmt(client, (struct v4l2_format *)arg);
1190
1191         case VIDIOC_INT_RESET:
1192                 if (state->is_cx25836)
1193                         cx25836_initialize(client);
1194                 else if (state->is_cx23885)
1195                         cx23885_initialize(client);
1196                 else
1197                         cx25840_initialize(client);
1198                 break;
1199
1200         case VIDIOC_G_CHIP_IDENT:
1201                 return v4l2_chip_ident_i2c_client(client, arg, state->id, state->rev);
1202
1203         default:
1204                 return -EINVAL;
1205         }
1206
1207         return 0;
1208 }
1209
1210 /* ----------------------------------------------------------------------- */
1211
1212 static int cx25840_probe(struct i2c_client *client,
1213                          const struct i2c_device_id *did)
1214 {
1215         struct cx25840_state *state;
1216         u32 id;
1217         u16 device_id;
1218
1219         /* Check if the adapter supports the needed features */
1220         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1221                 return -EIO;
1222
1223         v4l_dbg(1, cx25840_debug, client, "detecting cx25840 client on address 0x%x\n", client->addr << 1);
1224
1225         device_id = cx25840_read(client, 0x101) << 8;
1226         device_id |= cx25840_read(client, 0x100);
1227         v4l_dbg(1, cx25840_debug, client, "device_id = 0x%04x\n", device_id);
1228
1229         /* The high byte of the device ID should be
1230          * 0x83 for the cx2583x and 0x84 for the cx2584x */
1231         if ((device_id & 0xff00) == 0x8300) {
1232                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1233         }
1234         else if ((device_id & 0xff00) == 0x8400) {
1235                 id = V4L2_IDENT_CX25840 + ((device_id >> 4) & 0xf);
1236         } else if (device_id == 0x0000) {
1237                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1238         } else if (device_id == 0x1313) {
1239                 id = V4L2_IDENT_CX25836 + ((device_id >> 4) & 0xf) - 6;
1240         }
1241         else {
1242                 v4l_dbg(1, cx25840_debug, client, "cx25840 not found\n");
1243                 return -ENODEV;
1244         }
1245
1246         state = kzalloc(sizeof(struct cx25840_state), GFP_KERNEL);
1247         if (state == NULL) {
1248                 return -ENOMEM;
1249         }
1250
1251         /* Note: revision '(device_id & 0x0f) == 2' was never built. The
1252            marking skips from 0x1 == 22 to 0x3 == 23. */
1253         v4l_info(client, "cx25%3x-2%x found @ 0x%x (%s)\n",
1254                     (device_id & 0xfff0) >> 4,
1255                     (device_id & 0x0f) < 3 ? (device_id & 0x0f) + 1 : (device_id & 0x0f),
1256                     client->addr << 1, client->adapter->name);
1257
1258         i2c_set_clientdata(client, state);
1259         state->c = client;
1260         state->is_cx25836 = ((device_id & 0xff00) == 0x8300);
1261         state->is_cx23885 = (device_id == 0x0000) || (device_id == 0x1313);
1262         state->vid_input = CX25840_COMPOSITE7;
1263         state->aud_input = CX25840_AUDIO8;
1264         state->audclk_freq = 48000;
1265         state->pvr150_workaround = 0;
1266         state->audmode = V4L2_TUNER_MODE_LANG1;
1267         state->unmute_volume = -1;
1268         state->vbi_line_offset = 8;
1269         state->id = id;
1270         state->rev = device_id;
1271
1272         if (state->is_cx23885) {
1273                 /* Drive GPIO2 direction and values */
1274                 cx25840_write(client, 0x160, 0x1d);
1275                 cx25840_write(client, 0x164, 0x00);
1276         }
1277
1278         return 0;
1279 }
1280
1281 static int cx25840_remove(struct i2c_client *client)
1282 {
1283         kfree(i2c_get_clientdata(client));
1284         return 0;
1285 }
1286
1287 static const struct i2c_device_id cx25840_id[] = {
1288         { "cx25840", 0 },
1289         { }
1290 };
1291 MODULE_DEVICE_TABLE(i2c, cx25840_id);
1292
1293 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
1294         .name = "cx25840",
1295         .driverid = I2C_DRIVERID_CX25840,
1296         .command = cx25840_command,
1297         .probe = cx25840_probe,
1298         .remove = cx25840_remove,
1299         .id_table = cx25840_id,
1300 };