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Kuninori Morimotoed922a82008-12-29 06:04:06 -03001/*
2 * tw9910 Video Driver
3 *
4 * Copyright (C) 2008 Renesas Solutions Corp.
5 * Kuninori Morimoto <morimoto.kuninori@renesas.com>
6 *
7 * Based on ov772x driver,
8 *
9 * Copyright (C) 2008 Kuninori Morimoto <morimoto.kuninori@renesas.com>
10 * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
11 * Copyright (C) 2008 Magnus Damm
12 * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
17 */
18
19#include <linux/init.h>
20#include <linux/module.h>
21#include <linux/i2c.h>
22#include <linux/slab.h>
23#include <linux/kernel.h>
24#include <linux/delay.h>
25#include <linux/videodev2.h>
26#include <media/v4l2-chip-ident.h>
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -030027#include <media/v4l2-subdev.h>
Kuninori Morimotoed922a82008-12-29 06:04:06 -030028#include <media/soc_camera.h>
29#include <media/tw9910.h>
30
31#define GET_ID(val) ((val & 0xF8) >> 3)
Kuninori Morimoto6d74e5f2009-12-11 11:34:50 -030032#define GET_REV(val) (val & 0x07)
Kuninori Morimotoed922a82008-12-29 06:04:06 -030033
34/*
35 * register offset
36 */
37#define ID 0x00 /* Product ID Code Register */
38#define STATUS1 0x01 /* Chip Status Register I */
39#define INFORM 0x02 /* Input Format */
40#define OPFORM 0x03 /* Output Format Control Register */
41#define DLYCTR 0x04 /* Hysteresis and HSYNC Delay Control */
42#define OUTCTR1 0x05 /* Output Control I */
43#define ACNTL1 0x06 /* Analog Control Register 1 */
44#define CROP_HI 0x07 /* Cropping Register, High */
45#define VDELAY_LO 0x08 /* Vertical Delay Register, Low */
46#define VACTIVE_LO 0x09 /* Vertical Active Register, Low */
47#define HDELAY_LO 0x0A /* Horizontal Delay Register, Low */
48#define HACTIVE_LO 0x0B /* Horizontal Active Register, Low */
49#define CNTRL1 0x0C /* Control Register I */
50#define VSCALE_LO 0x0D /* Vertical Scaling Register, Low */
51#define SCALE_HI 0x0E /* Scaling Register, High */
52#define HSCALE_LO 0x0F /* Horizontal Scaling Register, Low */
53#define BRIGHT 0x10 /* BRIGHTNESS Control Register */
54#define CONTRAST 0x11 /* CONTRAST Control Register */
55#define SHARPNESS 0x12 /* SHARPNESS Control Register I */
56#define SAT_U 0x13 /* Chroma (U) Gain Register */
57#define SAT_V 0x14 /* Chroma (V) Gain Register */
58#define HUE 0x15 /* Hue Control Register */
59#define CORING1 0x17
60#define CORING2 0x18 /* Coring and IF compensation */
61#define VBICNTL 0x19 /* VBI Control Register */
62#define ACNTL2 0x1A /* Analog Control 2 */
63#define OUTCTR2 0x1B /* Output Control 2 */
64#define SDT 0x1C /* Standard Selection */
65#define SDTR 0x1D /* Standard Recognition */
66#define TEST 0x1F /* Test Control Register */
67#define CLMPG 0x20 /* Clamping Gain */
68#define IAGC 0x21 /* Individual AGC Gain */
69#define AGCGAIN 0x22 /* AGC Gain */
70#define PEAKWT 0x23 /* White Peak Threshold */
71#define CLMPL 0x24 /* Clamp level */
72#define SYNCT 0x25 /* Sync Amplitude */
73#define MISSCNT 0x26 /* Sync Miss Count Register */
74#define PCLAMP 0x27 /* Clamp Position Register */
75#define VCNTL1 0x28 /* Vertical Control I */
76#define VCNTL2 0x29 /* Vertical Control II */
77#define CKILL 0x2A /* Color Killer Level Control */
78#define COMB 0x2B /* Comb Filter Control */
79#define LDLY 0x2C /* Luma Delay and H Filter Control */
80#define MISC1 0x2D /* Miscellaneous Control I */
81#define LOOP 0x2E /* LOOP Control Register */
82#define MISC2 0x2F /* Miscellaneous Control II */
83#define MVSN 0x30 /* Macrovision Detection */
84#define STATUS2 0x31 /* Chip STATUS II */
85#define HFREF 0x32 /* H monitor */
86#define CLMD 0x33 /* CLAMP MODE */
87#define IDCNTL 0x34 /* ID Detection Control */
88#define CLCNTL1 0x35 /* Clamp Control I */
89#define ANAPLLCTL 0x4C
90#define VBIMIN 0x4D
91#define HSLOWCTL 0x4E
92#define WSS3 0x4F
93#define FILLDATA 0x50
94#define SDID 0x51
95#define DID 0x52
96#define WSS1 0x53
97#define WSS2 0x54
98#define VVBI 0x55
99#define LCTL6 0x56
100#define LCTL7 0x57
101#define LCTL8 0x58
102#define LCTL9 0x59
103#define LCTL10 0x5A
104#define LCTL11 0x5B
105#define LCTL12 0x5C
106#define LCTL13 0x5D
107#define LCTL14 0x5E
108#define LCTL15 0x5F
109#define LCTL16 0x60
110#define LCTL17 0x61
111#define LCTL18 0x62
112#define LCTL19 0x63
113#define LCTL20 0x64
114#define LCTL21 0x65
115#define LCTL22 0x66
116#define LCTL23 0x67
117#define LCTL24 0x68
118#define LCTL25 0x69
119#define LCTL26 0x6A
Kuninori Morimotofaa58262009-12-11 11:34:51 -0300120#define HSBEGIN 0x6B
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300121#define HSEND 0x6C
122#define OVSDLY 0x6D
123#define OVSEND 0x6E
124#define VBIDELAY 0x6F
125
126/*
127 * register detail
128 */
129
130/* INFORM */
131#define FC27_ON 0x40 /* 1 : Input crystal clock frequency is 27MHz */
132#define FC27_FF 0x00 /* 0 : Square pixel mode. */
133 /* Must use 24.54MHz for 60Hz field rate */
134 /* source or 29.5MHz for 50Hz field rate */
135#define IFSEL_S 0x10 /* 01 : S-video decoding */
136#define IFSEL_C 0x00 /* 00 : Composite video decoding */
137 /* Y input video selection */
138#define YSEL_M0 0x00 /* 00 : Mux0 selected */
139#define YSEL_M1 0x04 /* 01 : Mux1 selected */
140#define YSEL_M2 0x08 /* 10 : Mux2 selected */
141#define YSEL_M3 0x10 /* 11 : Mux3 selected */
142
143/* OPFORM */
144#define MODE 0x80 /* 0 : CCIR601 compatible YCrCb 4:2:2 format */
145 /* 1 : ITU-R-656 compatible data sequence format */
146#define LEN 0x40 /* 0 : 8-bit YCrCb 4:2:2 output format */
147 /* 1 : 16-bit YCrCb 4:2:2 output format.*/
148#define LLCMODE 0x20 /* 1 : LLC output mode. */
149 /* 0 : free-run output mode */
150#define AINC 0x10 /* Serial interface auto-indexing control */
151 /* 0 : auto-increment */
152 /* 1 : non-auto */
153#define VSCTL 0x08 /* 1 : Vertical out ctrl by DVALID */
154 /* 0 : Vertical out ctrl by HACTIVE and DVALID */
Kuninori Morimoto06f292e2009-12-11 11:34:50 -0300155#define OEN_TRI_SEL_MASK 0x07
156#define OEN_TRI_SEL_ALL_ON 0x00 /* Enable output for Rev0/Rev1 */
157#define OEN_TRI_SEL_ALL_OFF_r0 0x06 /* All tri-stated for Rev0 */
158#define OEN_TRI_SEL_ALL_OFF_r1 0x07 /* All tri-stated for Rev1 */
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300159
160/* OUTCTR1 */
161#define VSP_LO 0x00 /* 0 : VS pin output polarity is active low */
162#define VSP_HI 0x80 /* 1 : VS pin output polarity is active high. */
163 /* VS pin output control */
164#define VSSL_VSYNC 0x00 /* 0 : VSYNC */
165#define VSSL_VACT 0x10 /* 1 : VACT */
166#define VSSL_FIELD 0x20 /* 2 : FIELD */
167#define VSSL_VVALID 0x30 /* 3 : VVALID */
168#define VSSL_ZERO 0x70 /* 7 : 0 */
169#define HSP_LOW 0x00 /* 0 : HS pin output polarity is active low */
170#define HSP_HI 0x08 /* 1 : HS pin output polarity is active high.*/
171 /* HS pin output control */
172#define HSSL_HACT 0x00 /* 0 : HACT */
173#define HSSL_HSYNC 0x01 /* 1 : HSYNC */
174#define HSSL_DVALID 0x02 /* 2 : DVALID */
175#define HSSL_HLOCK 0x03 /* 3 : HLOCK */
176#define HSSL_ASYNCW 0x04 /* 4 : ASYNCW */
177#define HSSL_ZERO 0x07 /* 7 : 0 */
178
179/* ACNTL1 */
180#define SRESET 0x80 /* resets the device to its default state
181 * but all register content remain unchanged.
182 * This bit is self-resetting.
183 */
Kuninori Morimoto607e5ad2009-12-11 11:34:50 -0300184#define ACNTL1_PDN_MASK 0x0e
185#define CLK_PDN 0x08 /* system clock power down */
186#define Y_PDN 0x04 /* Luma ADC power down */
187#define C_PDN 0x02 /* Chroma ADC power down */
188
189/* ACNTL2 */
190#define ACNTL2_PDN_MASK 0x40
191#define PLL_PDN 0x40 /* PLL power down */
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300192
193/* VBICNTL */
Guennadi Liakhovetski5d28d522009-12-11 11:15:05 -0300194
195/* RTSEL : control the real time signal output from the MPOUT pin */
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300196#define RTSEL_MASK 0x07
197#define RTSEL_VLOSS 0x00 /* 0000 = Video loss */
198#define RTSEL_HLOCK 0x01 /* 0001 = H-lock */
199#define RTSEL_SLOCK 0x02 /* 0010 = S-lock */
200#define RTSEL_VLOCK 0x03 /* 0011 = V-lock */
201#define RTSEL_MONO 0x04 /* 0100 = MONO */
202#define RTSEL_DET50 0x05 /* 0101 = DET50 */
203#define RTSEL_FIELD 0x06 /* 0110 = FIELD */
204#define RTSEL_RTCO 0x07 /* 0111 = RTCO ( Real Time Control ) */
205
206/*
207 * structure
208 */
209
210struct regval_list {
211 unsigned char reg_num;
212 unsigned char value;
213};
214
215struct tw9910_scale_ctrl {
216 char *name;
217 unsigned short width;
218 unsigned short height;
219 u16 hscale;
220 u16 vscale;
221};
222
223struct tw9910_cropping_ctrl {
224 u16 vdelay;
225 u16 vactive;
226 u16 hdelay;
227 u16 hactive;
228};
229
230struct tw9910_hsync_ctrl {
231 u16 start;
232 u16 end;
233};
234
235struct tw9910_priv {
Guennadi Liakhovetski906b1012010-02-04 11:24:00 +0100236 struct v4l2_subdev subdev;
237 struct tw9910_video_info *info;
238 const struct tw9910_scale_ctrl *scale;
239 u32 revision;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300240};
241
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300242static const struct tw9910_scale_ctrl tw9910_ntsc_scales[] = {
243 {
244 .name = "NTSC SQ",
245 .width = 640,
246 .height = 480,
247 .hscale = 0x0100,
248 .vscale = 0x0100,
249 },
250 {
251 .name = "NTSC CCIR601",
252 .width = 720,
253 .height = 480,
254 .hscale = 0x0100,
255 .vscale = 0x0100,
256 },
257 {
258 .name = "NTSC SQ (CIF)",
259 .width = 320,
260 .height = 240,
261 .hscale = 0x0200,
262 .vscale = 0x0200,
263 },
264 {
265 .name = "NTSC CCIR601 (CIF)",
266 .width = 360,
267 .height = 240,
268 .hscale = 0x0200,
269 .vscale = 0x0200,
270 },
271 {
272 .name = "NTSC SQ (QCIF)",
273 .width = 160,
274 .height = 120,
275 .hscale = 0x0400,
276 .vscale = 0x0400,
277 },
278 {
279 .name = "NTSC CCIR601 (QCIF)",
280 .width = 180,
281 .height = 120,
282 .hscale = 0x0400,
283 .vscale = 0x0400,
284 },
285};
286
287static const struct tw9910_scale_ctrl tw9910_pal_scales[] = {
288 {
289 .name = "PAL SQ",
290 .width = 768,
291 .height = 576,
292 .hscale = 0x0100,
293 .vscale = 0x0100,
294 },
295 {
296 .name = "PAL CCIR601",
297 .width = 720,
298 .height = 576,
299 .hscale = 0x0100,
300 .vscale = 0x0100,
301 },
302 {
303 .name = "PAL SQ (CIF)",
304 .width = 384,
305 .height = 288,
306 .hscale = 0x0200,
307 .vscale = 0x0200,
308 },
309 {
310 .name = "PAL CCIR601 (CIF)",
311 .width = 360,
312 .height = 288,
313 .hscale = 0x0200,
314 .vscale = 0x0200,
315 },
316 {
317 .name = "PAL SQ (QCIF)",
318 .width = 192,
319 .height = 144,
320 .hscale = 0x0400,
321 .vscale = 0x0400,
322 },
323 {
324 .name = "PAL CCIR601 (QCIF)",
325 .width = 180,
326 .height = 144,
327 .hscale = 0x0400,
328 .vscale = 0x0400,
329 },
330};
331
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300332static const struct tw9910_hsync_ctrl tw9910_hsync_ctrl = {
333 .start = 0x0260,
334 .end = 0x0300,
335};
336
337/*
338 * general function
339 */
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300340static struct tw9910_priv *to_tw9910(const struct i2c_client *client)
341{
Guennadi Liakhovetski96c75392009-08-25 11:53:23 -0300342 return container_of(i2c_get_clientdata(client), struct tw9910_priv,
343 subdev);
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300344}
345
Kuninori Morimoto20797082009-12-11 11:34:51 -0300346static int tw9910_mask_set(struct i2c_client *client, u8 command,
347 u8 mask, u8 set)
348{
349 s32 val = i2c_smbus_read_byte_data(client, command);
350 if (val < 0)
351 return val;
352
353 val &= ~mask;
354 val |= set & mask;
355
356 return i2c_smbus_write_byte_data(client, command, val);
357}
358
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300359static int tw9910_set_scale(struct i2c_client *client,
360 const struct tw9910_scale_ctrl *scale)
361{
362 int ret;
363
364 ret = i2c_smbus_write_byte_data(client, SCALE_HI,
365 (scale->vscale & 0x0F00) >> 4 |
366 (scale->hscale & 0x0F00) >> 8);
367 if (ret < 0)
368 return ret;
369
370 ret = i2c_smbus_write_byte_data(client, HSCALE_LO,
371 scale->hscale & 0x00FF);
372 if (ret < 0)
373 return ret;
374
375 ret = i2c_smbus_write_byte_data(client, VSCALE_LO,
376 scale->vscale & 0x00FF);
377
378 return ret;
379}
380
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300381static int tw9910_set_hsync(struct i2c_client *client,
382 const struct tw9910_hsync_ctrl *hsync)
383{
Kuninori Morimotofaa58262009-12-11 11:34:51 -0300384 struct tw9910_priv *priv = to_tw9910(client);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300385 int ret;
386
387 /* bit 10 - 3 */
Kuninori Morimotofaa58262009-12-11 11:34:51 -0300388 ret = i2c_smbus_write_byte_data(client, HSBEGIN,
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300389 (hsync->start & 0x07F8) >> 3);
390 if (ret < 0)
391 return ret;
392
393 /* bit 10 - 3 */
394 ret = i2c_smbus_write_byte_data(client, HSEND,
395 (hsync->end & 0x07F8) >> 3);
396 if (ret < 0)
397 return ret;
398
Kuninori Morimotofaa58262009-12-11 11:34:51 -0300399 /* So far only revisions 0 and 1 have been seen */
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300400 /* bit 2 - 0 */
Kuninori Morimotofaa58262009-12-11 11:34:51 -0300401 if (1 == priv->revision)
402 ret = tw9910_mask_set(client, HSLOWCTL, 0x77,
403 (hsync->start & 0x0007) << 4 |
404 (hsync->end & 0x0007));
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300405
406 return ret;
407}
408
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300409static void tw9910_reset(struct i2c_client *client)
410{
Kuninori Morimoto607e5ad2009-12-11 11:34:50 -0300411 tw9910_mask_set(client, ACNTL1, SRESET, SRESET);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300412 msleep(1);
413}
414
Kuninori Morimoto607e5ad2009-12-11 11:34:50 -0300415static int tw9910_power(struct i2c_client *client, int enable)
416{
417 int ret;
418 u8 acntl1;
419 u8 acntl2;
420
421 if (enable) {
422 acntl1 = 0;
423 acntl2 = 0;
424 } else {
425 acntl1 = CLK_PDN | Y_PDN | C_PDN;
426 acntl2 = PLL_PDN;
427 }
428
429 ret = tw9910_mask_set(client, ACNTL1, ACNTL1_PDN_MASK, acntl1);
430 if (ret < 0)
431 return ret;
432
433 return tw9910_mask_set(client, ACNTL2, ACNTL2_PDN_MASK, acntl2);
434}
435
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300436static const struct tw9910_scale_ctrl*
437tw9910_select_norm(struct soc_camera_device *icd, u32 width, u32 height)
438{
439 const struct tw9910_scale_ctrl *scale;
440 const struct tw9910_scale_ctrl *ret = NULL;
441 v4l2_std_id norm = icd->vdev->current_norm;
442 __u32 diff = 0xffffffff, tmp;
443 int size, i;
444
445 if (norm & V4L2_STD_NTSC) {
446 scale = tw9910_ntsc_scales;
447 size = ARRAY_SIZE(tw9910_ntsc_scales);
448 } else if (norm & V4L2_STD_PAL) {
449 scale = tw9910_pal_scales;
450 size = ARRAY_SIZE(tw9910_pal_scales);
451 } else {
452 return NULL;
453 }
454
455 for (i = 0; i < size; i++) {
456 tmp = abs(width - scale[i].width) +
457 abs(height - scale[i].height);
458 if (tmp < diff) {
459 diff = tmp;
460 ret = scale + i;
461 }
462 }
463
464 return ret;
465}
466
467/*
468 * soc_camera_ops function
469 */
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300470static int tw9910_s_stream(struct v4l2_subdev *sd, int enable)
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300471{
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300472 struct i2c_client *client = sd->priv;
473 struct tw9910_priv *priv = to_tw9910(client);
Kuninori Morimoto06f292e2009-12-11 11:34:50 -0300474 u8 val;
Kuninori Morimoto607e5ad2009-12-11 11:34:50 -0300475 int ret;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300476
Kuninori Morimoto06f292e2009-12-11 11:34:50 -0300477 if (!enable) {
478 switch (priv->revision) {
479 case 0:
480 val = OEN_TRI_SEL_ALL_OFF_r0;
481 break;
482 case 1:
483 val = OEN_TRI_SEL_ALL_OFF_r1;
484 break;
485 default:
486 dev_err(&client->dev, "un-supported revision\n");
487 return -EINVAL;
488 }
489 } else {
490 val = OEN_TRI_SEL_ALL_ON;
491
492 if (!priv->scale) {
493 dev_err(&client->dev, "norm select error\n");
494 return -EPERM;
495 }
496
497 dev_dbg(&client->dev, "%s %dx%d\n",
498 priv->scale->name,
499 priv->scale->width,
500 priv->scale->height);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300501 }
502
Kuninori Morimoto607e5ad2009-12-11 11:34:50 -0300503 ret = tw9910_mask_set(client, OPFORM, OEN_TRI_SEL_MASK, val);
504 if (ret < 0)
505 return ret;
506
507 return tw9910_power(client, enable);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300508}
509
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300510static int tw9910_set_bus_param(struct soc_camera_device *icd,
511 unsigned long flags)
512{
Kuninori Morimoto398994c2009-12-11 11:53:54 -0300513 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
514 struct i2c_client *client = sd->priv;
Kuninori Morimoto70da92e2009-12-11 11:53:55 -0300515 u8 val = VSSL_VVALID | HSSL_DVALID;
Kuninori Morimoto398994c2009-12-11 11:53:54 -0300516
517 /*
518 * set OUTCTR1
Kuninori Morimoto70da92e2009-12-11 11:53:55 -0300519 *
520 * We use VVALID and DVALID signals to control VSYNC and HSYNC
521 * outputs, in this mode their polarity is inverted.
Kuninori Morimoto398994c2009-12-11 11:53:54 -0300522 */
Kuninori Morimoto70da92e2009-12-11 11:53:55 -0300523 if (flags & SOCAM_HSYNC_ACTIVE_LOW)
524 val |= HSP_HI;
525
526 if (flags & SOCAM_VSYNC_ACTIVE_LOW)
527 val |= VSP_HI;
528
529 return i2c_smbus_write_byte_data(client, OUTCTR1, val);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300530}
531
532static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
533{
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300534 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300535 struct tw9910_priv *priv = to_tw9910(client);
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300536 struct soc_camera_link *icl = to_soc_camera_link(icd);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300537 unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
538 SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
Kuninori Morimoto70da92e2009-12-11 11:53:55 -0300539 SOCAM_VSYNC_ACTIVE_LOW | SOCAM_HSYNC_ACTIVE_LOW |
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300540 SOCAM_DATA_ACTIVE_HIGH | priv->info->buswidth;
541
542 return soc_camera_apply_sensor_flags(icl, flags);
543}
544
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300545static int tw9910_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300546{
547 int ret = -EINVAL;
548
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300549 if (norm & (V4L2_STD_NTSC | V4L2_STD_PAL))
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300550 ret = 0;
551
552 return ret;
553}
554
555static int tw9910_enum_input(struct soc_camera_device *icd,
556 struct v4l2_input *inp)
557{
558 inp->type = V4L2_INPUT_TYPE_TUNER;
559 inp->std = V4L2_STD_UNKNOWN;
560 strcpy(inp->name, "Video");
561
562 return 0;
563}
564
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300565static int tw9910_g_chip_ident(struct v4l2_subdev *sd,
566 struct v4l2_dbg_chip_ident *id)
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300567{
Kuninori Morimoto6d74e5f2009-12-11 11:34:50 -0300568 struct i2c_client *client = sd->priv;
569 struct tw9910_priv *priv = to_tw9910(client);
570
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300571 id->ident = V4L2_IDENT_TW9910;
Kuninori Morimoto6d74e5f2009-12-11 11:34:50 -0300572 id->revision = priv->revision;
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300573
574 return 0;
575}
576
577#ifdef CONFIG_VIDEO_ADV_DEBUG
578static int tw9910_g_register(struct v4l2_subdev *sd,
579 struct v4l2_dbg_register *reg)
580{
581 struct i2c_client *client = sd->priv;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300582 int ret;
583
584 if (reg->reg > 0xff)
585 return -EINVAL;
586
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300587 ret = i2c_smbus_read_byte_data(client, reg->reg);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300588 if (ret < 0)
589 return ret;
590
Guennadi Liakhovetski5d28d522009-12-11 11:15:05 -0300591 /*
592 * ret = int
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300593 * reg->val = __u64
594 */
595 reg->val = (__u64)ret;
596
597 return 0;
598}
599
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300600static int tw9910_s_register(struct v4l2_subdev *sd,
601 struct v4l2_dbg_register *reg)
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300602{
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300603 struct i2c_client *client = sd->priv;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300604
605 if (reg->reg > 0xff ||
606 reg->val > 0xff)
607 return -EINVAL;
608
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300609 return i2c_smbus_write_byte_data(client, reg->reg, reg->val);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300610}
611#endif
612
Guennadi Liakhovetski08590b92009-08-25 11:46:54 -0300613static int tw9910_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300614{
Guennadi Liakhovetski08590b92009-08-25 11:46:54 -0300615 struct v4l2_rect *rect = &a->c;
616 struct i2c_client *client = sd->priv;
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300617 struct tw9910_priv *priv = to_tw9910(client);
Guennadi Liakhovetski08590b92009-08-25 11:46:54 -0300618 struct soc_camera_device *icd = client->dev.platform_data;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300619 int ret = -EINVAL;
620 u8 val;
621
622 /*
623 * select suitable norm
624 */
625 priv->scale = tw9910_select_norm(icd, rect->width, rect->height);
626 if (!priv->scale)
Kuninori Morimoto6d756112008-12-29 06:04:16 -0300627 goto tw9910_set_fmt_error;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300628
629 /*
630 * reset hardware
631 */
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300632 tw9910_reset(client);
Kuninori Morimoto6d756112008-12-29 06:04:16 -0300633
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300634 /*
635 * set bus width
636 */
637 val = 0x00;
638 if (SOCAM_DATAWIDTH_16 == priv->info->buswidth)
639 val = LEN;
640
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300641 ret = tw9910_mask_set(client, OPFORM, LEN, val);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300642 if (ret < 0)
Kuninori Morimoto6d756112008-12-29 06:04:16 -0300643 goto tw9910_set_fmt_error;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300644
645 /*
646 * select MPOUT behavior
647 */
648 switch (priv->info->mpout) {
649 case TW9910_MPO_VLOSS:
650 val = RTSEL_VLOSS; break;
651 case TW9910_MPO_HLOCK:
652 val = RTSEL_HLOCK; break;
653 case TW9910_MPO_SLOCK:
654 val = RTSEL_SLOCK; break;
655 case TW9910_MPO_VLOCK:
656 val = RTSEL_VLOCK; break;
657 case TW9910_MPO_MONO:
658 val = RTSEL_MONO; break;
659 case TW9910_MPO_DET50:
660 val = RTSEL_DET50; break;
661 case TW9910_MPO_FIELD:
662 val = RTSEL_FIELD; break;
663 case TW9910_MPO_RTCO:
664 val = RTSEL_RTCO; break;
665 default:
666 val = 0;
667 }
668
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300669 ret = tw9910_mask_set(client, VBICNTL, RTSEL_MASK, val);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300670 if (ret < 0)
Kuninori Morimoto6d756112008-12-29 06:04:16 -0300671 goto tw9910_set_fmt_error;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300672
673 /*
674 * set scale
675 */
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300676 ret = tw9910_set_scale(client, priv->scale);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300677 if (ret < 0)
Kuninori Morimoto6d756112008-12-29 06:04:16 -0300678 goto tw9910_set_fmt_error;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300679
680 /*
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300681 * set hsync
682 */
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300683 ret = tw9910_set_hsync(client, &tw9910_hsync_ctrl);
Kuninori Morimoto6d756112008-12-29 06:04:16 -0300684 if (ret < 0)
685 goto tw9910_set_fmt_error;
686
Guennadi Liakhovetski123ab622009-08-25 11:46:52 -0300687 rect->width = priv->scale->width;
688 rect->height = priv->scale->height;
689 rect->left = 0;
690 rect->top = 0;
691
Kuninori Morimoto6d756112008-12-29 06:04:16 -0300692 return ret;
693
694tw9910_set_fmt_error:
695
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300696 tw9910_reset(client);
Kuninori Morimoto6d756112008-12-29 06:04:16 -0300697 priv->scale = NULL;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300698
699 return ret;
700}
701
Guennadi Liakhovetski6a6c8782009-08-25 11:50:46 -0300702static int tw9910_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
703{
704 struct i2c_client *client = sd->priv;
705 struct tw9910_priv *priv = to_tw9910(client);
706
707 if (!priv->scale) {
708 int ret;
709 struct v4l2_crop crop = {
710 .c = {
711 .left = 0,
712 .top = 0,
713 .width = 640,
714 .height = 480,
715 },
716 };
717 ret = tw9910_s_crop(sd, &crop);
718 if (ret < 0)
719 return ret;
720 }
721
722 a->c.left = 0;
723 a->c.top = 0;
724 a->c.width = priv->scale->width;
725 a->c.height = priv->scale->height;
726 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
727
728 return 0;
729}
730
731static int tw9910_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
732{
733 a->bounds.left = 0;
734 a->bounds.top = 0;
735 a->bounds.width = 768;
736 a->bounds.height = 576;
737 a->defrect.left = 0;
738 a->defrect.top = 0;
739 a->defrect.width = 640;
740 a->defrect.height = 480;
741 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
742 a->pixelaspect.numerator = 1;
743 a->pixelaspect.denominator = 1;
744
745 return 0;
746}
747
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300748static int tw9910_g_fmt(struct v4l2_subdev *sd,
749 struct v4l2_mbus_framefmt *mf)
Guennadi Liakhovetski6a6c8782009-08-25 11:50:46 -0300750{
751 struct i2c_client *client = sd->priv;
752 struct tw9910_priv *priv = to_tw9910(client);
Guennadi Liakhovetski6a6c8782009-08-25 11:50:46 -0300753
754 if (!priv->scale) {
755 int ret;
756 struct v4l2_crop crop = {
757 .c = {
758 .left = 0,
759 .top = 0,
760 .width = 640,
761 .height = 480,
762 },
763 };
764 ret = tw9910_s_crop(sd, &crop);
765 if (ret < 0)
766 return ret;
767 }
768
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300769 mf->width = priv->scale->width;
770 mf->height = priv->scale->height;
Guennadi Liakhovetskiace6e972010-07-22 16:52:51 -0300771 mf->code = V4L2_MBUS_FMT_UYVY8_2X8;
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300772 mf->colorspace = V4L2_COLORSPACE_JPEG;
Kuninori Morimoto34cae302009-12-11 11:53:53 -0300773 mf->field = V4L2_FIELD_INTERLACED_BT;
Guennadi Liakhovetski6a6c8782009-08-25 11:50:46 -0300774
775 return 0;
776}
777
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300778static int tw9910_s_fmt(struct v4l2_subdev *sd,
779 struct v4l2_mbus_framefmt *mf)
Guennadi Liakhovetski09e231b2009-03-13 06:08:20 -0300780{
Guennadi Liakhovetski6a6c8782009-08-25 11:50:46 -0300781 struct i2c_client *client = sd->priv;
782 struct tw9910_priv *priv = to_tw9910(client);
Guennadi Liakhovetski08590b92009-08-25 11:46:54 -0300783 /* See tw9910_s_crop() - no proper cropping support */
784 struct v4l2_crop a = {
785 .c = {
786 .left = 0,
787 .top = 0,
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300788 .width = mf->width,
789 .height = mf->height,
Guennadi Liakhovetski08590b92009-08-25 11:46:54 -0300790 },
Guennadi Liakhovetski09e231b2009-03-13 06:08:20 -0300791 };
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300792 int ret;
793
794 WARN_ON(mf->field != V4L2_FIELD_ANY &&
Kuninori Morimoto34cae302009-12-11 11:53:53 -0300795 mf->field != V4L2_FIELD_INTERLACED_BT);
Guennadi Liakhovetski09e231b2009-03-13 06:08:20 -0300796
797 /*
798 * check color format
799 */
Guennadi Liakhovetskiace6e972010-07-22 16:52:51 -0300800 if (mf->code != V4L2_MBUS_FMT_UYVY8_2X8)
Guennadi Liakhovetski09e231b2009-03-13 06:08:20 -0300801 return -EINVAL;
802
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300803 mf->colorspace = V4L2_COLORSPACE_JPEG;
804
Guennadi Liakhovetski08590b92009-08-25 11:46:54 -0300805 ret = tw9910_s_crop(sd, &a);
Guennadi Liakhovetski123ab622009-08-25 11:46:52 -0300806 if (!ret) {
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300807 mf->width = priv->scale->width;
808 mf->height = priv->scale->height;
Guennadi Liakhovetski123ab622009-08-25 11:46:52 -0300809 }
810 return ret;
Guennadi Liakhovetski09e231b2009-03-13 06:08:20 -0300811}
812
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300813static int tw9910_try_fmt(struct v4l2_subdev *sd,
814 struct v4l2_mbus_framefmt *mf)
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300815{
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300816 struct i2c_client *client = sd->priv;
817 struct soc_camera_device *icd = client->dev.platform_data;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300818 const struct tw9910_scale_ctrl *scale;
819
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300820 if (V4L2_FIELD_ANY == mf->field) {
Kuninori Morimoto34cae302009-12-11 11:53:53 -0300821 mf->field = V4L2_FIELD_INTERLACED_BT;
822 } else if (V4L2_FIELD_INTERLACED_BT != mf->field) {
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300823 dev_err(&client->dev, "Field type %d invalid.\n", mf->field);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300824 return -EINVAL;
825 }
826
Guennadi Liakhovetskiace6e972010-07-22 16:52:51 -0300827 mf->code = V4L2_MBUS_FMT_UYVY8_2X8;
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300828 mf->colorspace = V4L2_COLORSPACE_JPEG;
829
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300830 /*
831 * select suitable norm
832 */
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300833 scale = tw9910_select_norm(icd, mf->width, mf->height);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300834 if (!scale)
835 return -EINVAL;
836
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300837 mf->width = scale->width;
838 mf->height = scale->height;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300839
840 return 0;
841}
842
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300843static int tw9910_video_probe(struct soc_camera_device *icd,
844 struct i2c_client *client)
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300845{
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300846 struct tw9910_priv *priv = to_tw9910(client);
Kuninori Morimoto88a67c52009-12-11 11:34:50 -0300847 s32 id;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300848
849 /*
850 * We must have a parent by now. And it cannot be a wrong one.
851 * So this entire test is completely redundant.
852 */
853 if (!icd->dev.parent ||
854 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
855 return -ENODEV;
856
857 /*
858 * tw9910 only use 8 or 16 bit bus width
859 */
860 if (SOCAM_DATAWIDTH_16 != priv->info->buswidth &&
861 SOCAM_DATAWIDTH_8 != priv->info->buswidth) {
Guennadi Liakhovetski85f8be62009-08-25 11:47:00 -0300862 dev_err(&client->dev, "bus width error\n");
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300863 return -ENODEV;
864 }
865
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300866 /*
867 * check and show Product ID
Kuninori Morimoto4a4bc5e2009-12-11 11:06:00 -0300868 * So far only revisions 0 and 1 have been seen
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300869 */
Kuninori Morimoto88a67c52009-12-11 11:34:50 -0300870 id = i2c_smbus_read_byte_data(client, ID);
871 priv->revision = GET_REV(id);
872 id = GET_ID(id);
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300873
Kuninori Morimoto88a67c52009-12-11 11:34:50 -0300874 if (0x0B != id ||
Kuninori Morimoto6d74e5f2009-12-11 11:34:50 -0300875 0x01 < priv->revision) {
Guennadi Liakhovetski85f8be62009-08-25 11:47:00 -0300876 dev_err(&client->dev,
Kuninori Morimoto6d74e5f2009-12-11 11:34:50 -0300877 "Product ID error %x:%x\n",
Kuninori Morimoto88a67c52009-12-11 11:34:50 -0300878 id, priv->revision);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300879 return -ENODEV;
880 }
881
Guennadi Liakhovetski85f8be62009-08-25 11:47:00 -0300882 dev_info(&client->dev,
Kuninori Morimoto88a67c52009-12-11 11:34:50 -0300883 "tw9910 Product ID %0x:%0x\n", id, priv->revision);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300884
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300885 icd->vdev->tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL;
886 icd->vdev->current_norm = V4L2_STD_NTSC;
887
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300888 return 0;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300889}
890
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300891static struct soc_camera_ops tw9910_ops = {
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300892 .set_bus_param = tw9910_set_bus_param,
893 .query_bus_param = tw9910_query_bus_param,
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300894 .enum_input = tw9910_enum_input,
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300895};
896
897static struct v4l2_subdev_core_ops tw9910_subdev_core_ops = {
898 .g_chip_ident = tw9910_g_chip_ident,
899 .s_std = tw9910_s_std,
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300900#ifdef CONFIG_VIDEO_ADV_DEBUG
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300901 .g_register = tw9910_g_register,
902 .s_register = tw9910_s_register,
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300903#endif
904};
905
Hans Verkuil3805f202010-05-08 17:55:00 -0300906static int tw9910_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300907 enum v4l2_mbus_pixelcode *code)
908{
909 if (index)
910 return -EINVAL;
911
Guennadi Liakhovetskiace6e972010-07-22 16:52:51 -0300912 *code = V4L2_MBUS_FMT_UYVY8_2X8;
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300913 return 0;
914}
915
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300916static struct v4l2_subdev_video_ops tw9910_subdev_video_ops = {
917 .s_stream = tw9910_s_stream,
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300918 .g_mbus_fmt = tw9910_g_fmt,
919 .s_mbus_fmt = tw9910_s_fmt,
920 .try_mbus_fmt = tw9910_try_fmt,
Guennadi Liakhovetski6a6c8782009-08-25 11:50:46 -0300921 .cropcap = tw9910_cropcap,
922 .g_crop = tw9910_g_crop,
Guennadi Liakhovetski08590b92009-08-25 11:46:54 -0300923 .s_crop = tw9910_s_crop,
Guennadi Liakhovetski760697b2009-12-11 11:46:49 -0300924 .enum_mbus_fmt = tw9910_enum_fmt,
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300925};
926
927static struct v4l2_subdev_ops tw9910_subdev_ops = {
928 .core = &tw9910_subdev_core_ops,
929 .video = &tw9910_subdev_video_ops,
930};
931
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300932/*
933 * i2c_driver function
934 */
935
936static int tw9910_probe(struct i2c_client *client,
937 const struct i2c_device_id *did)
938
939{
940 struct tw9910_priv *priv;
941 struct tw9910_video_info *info;
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300942 struct soc_camera_device *icd = client->dev.platform_data;
943 struct i2c_adapter *adapter =
944 to_i2c_adapter(client->dev.parent);
945 struct soc_camera_link *icl;
Guennadi Liakhovetski6a6c8782009-08-25 11:50:46 -0300946 int ret;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300947
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300948 if (!icd) {
949 dev_err(&client->dev, "TW9910: missing soc-camera data!\n");
950 return -EINVAL;
951 }
952
953 icl = to_soc_camera_link(icd);
Guennadi Liakhovetski0f448292009-12-11 11:31:35 -0300954 if (!icl || !icl->priv)
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300955 return -EINVAL;
956
Guennadi Liakhovetski0f448292009-12-11 11:31:35 -0300957 info = icl->priv;
Guennadi Liakhovetski0a861e92009-05-12 15:13:32 +0000958
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300959 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300960 dev_err(&client->dev,
961 "I2C-Adapter doesn't support "
962 "I2C_FUNC_SMBUS_BYTE_DATA\n");
963 return -EIO;
964 }
965
966 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
967 if (!priv)
968 return -ENOMEM;
969
970 priv->info = info;
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300971
972 v4l2_i2c_subdev_init(&priv->subdev, client, &tw9910_subdev_ops);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300973
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300974 icd->ops = &tw9910_ops;
Guennadi Liakhovetski0f448292009-12-11 11:31:35 -0300975 icd->iface = icl->bus_id;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300976
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300977 ret = tw9910_video_probe(icd, client);
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300978 if (ret) {
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300979 icd->ops = NULL;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300980 kfree(priv);
981 }
982
983 return ret;
984}
985
986static int tw9910_remove(struct i2c_client *client)
987{
Guennadi Liakhovetski979ea1d2009-08-25 11:43:33 -0300988 struct tw9910_priv *priv = to_tw9910(client);
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300989 struct soc_camera_device *icd = client->dev.platform_data;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300990
Guennadi Liakhovetski40e2e092009-08-25 11:28:22 -0300991 icd->ops = NULL;
Kuninori Morimotoed922a82008-12-29 06:04:06 -0300992 kfree(priv);
993 return 0;
994}
995
996static const struct i2c_device_id tw9910_id[] = {
997 { "tw9910", 0 },
998 { }
999};
1000MODULE_DEVICE_TABLE(i2c, tw9910_id);
1001
1002static struct i2c_driver tw9910_i2c_driver = {
1003 .driver = {
1004 .name = "tw9910",
1005 },
1006 .probe = tw9910_probe,
1007 .remove = tw9910_remove,
1008 .id_table = tw9910_id,
1009};
1010
1011/*
1012 * module function
1013 */
1014static int __init tw9910_module_init(void)
1015{
1016 return i2c_add_driver(&tw9910_i2c_driver);
1017}
1018
1019static void __exit tw9910_module_exit(void)
1020{
1021 i2c_del_driver(&tw9910_i2c_driver);
1022}
1023
1024module_init(tw9910_module_init);
1025module_exit(tw9910_module_exit);
1026
1027MODULE_DESCRIPTION("SoC Camera driver for tw9910");
1028MODULE_AUTHOR("Kuninori Morimoto");
1029MODULE_LICENSE("GPL v2");