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[deliverable/linux.git] / drivers / media / video / tw9910.c
1 /*
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>
27 #include <media/v4l2-common.h>
28 #include <media/soc_camera.h>
29 #include <media/tw9910.h>
30
31 #define GET_ID(val) ((val & 0xF8) >> 3)
32 #define GET_ReV(val) (val & 0x07)
33
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
120 #define HSGEGIN 0x6B
121 #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 */
155 #define OEN 0x04 /* Output Enable together with TRI_SEL. */
156
157 /* OUTCTR1 */
158 #define VSP_LO 0x00 /* 0 : VS pin output polarity is active low */
159 #define VSP_HI 0x80 /* 1 : VS pin output polarity is active high. */
160 /* VS pin output control */
161 #define VSSL_VSYNC 0x00 /* 0 : VSYNC */
162 #define VSSL_VACT 0x10 /* 1 : VACT */
163 #define VSSL_FIELD 0x20 /* 2 : FIELD */
164 #define VSSL_VVALID 0x30 /* 3 : VVALID */
165 #define VSSL_ZERO 0x70 /* 7 : 0 */
166 #define HSP_LOW 0x00 /* 0 : HS pin output polarity is active low */
167 #define HSP_HI 0x08 /* 1 : HS pin output polarity is active high.*/
168 /* HS pin output control */
169 #define HSSL_HACT 0x00 /* 0 : HACT */
170 #define HSSL_HSYNC 0x01 /* 1 : HSYNC */
171 #define HSSL_DVALID 0x02 /* 2 : DVALID */
172 #define HSSL_HLOCK 0x03 /* 3 : HLOCK */
173 #define HSSL_ASYNCW 0x04 /* 4 : ASYNCW */
174 #define HSSL_ZERO 0x07 /* 7 : 0 */
175
176 /* ACNTL1 */
177 #define SRESET 0x80 /* resets the device to its default state
178 * but all register content remain unchanged.
179 * This bit is self-resetting.
180 */
181
182 /* VBICNTL */
183 /* RTSEL : control the real time signal
184 * output from the MPOUT pin
185 */
186 #define RTSEL_MASK 0x07
187 #define RTSEL_VLOSS 0x00 /* 0000 = Video loss */
188 #define RTSEL_HLOCK 0x01 /* 0001 = H-lock */
189 #define RTSEL_SLOCK 0x02 /* 0010 = S-lock */
190 #define RTSEL_VLOCK 0x03 /* 0011 = V-lock */
191 #define RTSEL_MONO 0x04 /* 0100 = MONO */
192 #define RTSEL_DET50 0x05 /* 0101 = DET50 */
193 #define RTSEL_FIELD 0x06 /* 0110 = FIELD */
194 #define RTSEL_RTCO 0x07 /* 0111 = RTCO ( Real Time Control ) */
195
196 /*
197 * structure
198 */
199
200 struct regval_list {
201 unsigned char reg_num;
202 unsigned char value;
203 };
204
205 struct tw9910_scale_ctrl {
206 char *name;
207 unsigned short width;
208 unsigned short height;
209 u16 hscale;
210 u16 vscale;
211 };
212
213 struct tw9910_cropping_ctrl {
214 u16 vdelay;
215 u16 vactive;
216 u16 hdelay;
217 u16 hactive;
218 };
219
220 struct tw9910_hsync_ctrl {
221 u16 start;
222 u16 end;
223 };
224
225 struct tw9910_priv {
226 struct tw9910_video_info *info;
227 struct i2c_client *client;
228 struct soc_camera_device icd;
229 const struct tw9910_scale_ctrl *scale;
230 };
231
232 /*
233 * register settings
234 */
235
236 #define ENDMARKER { 0xff, 0xff }
237
238 static const struct regval_list tw9910_default_regs[] =
239 {
240 { OPFORM, 0x00 },
241 { OUTCTR1, VSP_LO | VSSL_VVALID | HSP_HI | HSSL_HSYNC },
242 ENDMARKER,
243 };
244
245 static const struct soc_camera_data_format tw9910_color_fmt[] = {
246 {
247 .name = "VYUY",
248 .fourcc = V4L2_PIX_FMT_VYUY,
249 .depth = 16,
250 .colorspace = V4L2_COLORSPACE_SMPTE170M,
251 }
252 };
253
254 static const struct tw9910_scale_ctrl tw9910_ntsc_scales[] = {
255 {
256 .name = "NTSC SQ",
257 .width = 640,
258 .height = 480,
259 .hscale = 0x0100,
260 .vscale = 0x0100,
261 },
262 {
263 .name = "NTSC CCIR601",
264 .width = 720,
265 .height = 480,
266 .hscale = 0x0100,
267 .vscale = 0x0100,
268 },
269 {
270 .name = "NTSC SQ (CIF)",
271 .width = 320,
272 .height = 240,
273 .hscale = 0x0200,
274 .vscale = 0x0200,
275 },
276 {
277 .name = "NTSC CCIR601 (CIF)",
278 .width = 360,
279 .height = 240,
280 .hscale = 0x0200,
281 .vscale = 0x0200,
282 },
283 {
284 .name = "NTSC SQ (QCIF)",
285 .width = 160,
286 .height = 120,
287 .hscale = 0x0400,
288 .vscale = 0x0400,
289 },
290 {
291 .name = "NTSC CCIR601 (QCIF)",
292 .width = 180,
293 .height = 120,
294 .hscale = 0x0400,
295 .vscale = 0x0400,
296 },
297 };
298
299 static const struct tw9910_scale_ctrl tw9910_pal_scales[] = {
300 {
301 .name = "PAL SQ",
302 .width = 768,
303 .height = 576,
304 .hscale = 0x0100,
305 .vscale = 0x0100,
306 },
307 {
308 .name = "PAL CCIR601",
309 .width = 720,
310 .height = 576,
311 .hscale = 0x0100,
312 .vscale = 0x0100,
313 },
314 {
315 .name = "PAL SQ (CIF)",
316 .width = 384,
317 .height = 288,
318 .hscale = 0x0200,
319 .vscale = 0x0200,
320 },
321 {
322 .name = "PAL CCIR601 (CIF)",
323 .width = 360,
324 .height = 288,
325 .hscale = 0x0200,
326 .vscale = 0x0200,
327 },
328 {
329 .name = "PAL SQ (QCIF)",
330 .width = 192,
331 .height = 144,
332 .hscale = 0x0400,
333 .vscale = 0x0400,
334 },
335 {
336 .name = "PAL CCIR601 (QCIF)",
337 .width = 180,
338 .height = 144,
339 .hscale = 0x0400,
340 .vscale = 0x0400,
341 },
342 };
343
344 static const struct tw9910_cropping_ctrl tw9910_cropping_ctrl = {
345 .vdelay = 0x0012,
346 .vactive = 0x00F0,
347 .hdelay = 0x0010,
348 .hactive = 0x02D0,
349 };
350
351 static const struct tw9910_hsync_ctrl tw9910_hsync_ctrl = {
352 .start = 0x0260,
353 .end = 0x0300,
354 };
355
356 /*
357 * general function
358 */
359 static 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
381 static int tw9910_set_cropping(struct i2c_client *client,
382 const struct tw9910_cropping_ctrl *cropping)
383 {
384 int ret;
385
386 ret = i2c_smbus_write_byte_data(client, CROP_HI,
387 (cropping->vdelay & 0x0300) >> 2 |
388 (cropping->vactive & 0x0300) >> 4 |
389 (cropping->hdelay & 0x0300) >> 6 |
390 (cropping->hactive & 0x0300) >> 8);
391 if (ret < 0)
392 return ret;
393
394 ret = i2c_smbus_write_byte_data(client, VDELAY_LO,
395 cropping->vdelay & 0x00FF);
396 if (ret < 0)
397 return ret;
398
399 ret = i2c_smbus_write_byte_data(client, VACTIVE_LO,
400 cropping->vactive & 0x00FF);
401 if (ret < 0)
402 return ret;
403
404 ret = i2c_smbus_write_byte_data(client, HDELAY_LO,
405 cropping->hdelay & 0x00FF);
406 if (ret < 0)
407 return ret;
408
409 ret = i2c_smbus_write_byte_data(client, HACTIVE_LO,
410 cropping->hactive & 0x00FF);
411
412 return ret;
413 }
414
415 static int tw9910_set_hsync(struct i2c_client *client,
416 const struct tw9910_hsync_ctrl *hsync)
417 {
418 int ret;
419
420 /* bit 10 - 3 */
421 ret = i2c_smbus_write_byte_data(client, HSGEGIN,
422 (hsync->start & 0x07F8) >> 3);
423 if (ret < 0)
424 return ret;
425
426 /* bit 10 - 3 */
427 ret = i2c_smbus_write_byte_data(client, HSEND,
428 (hsync->end & 0x07F8) >> 3);
429 if (ret < 0)
430 return ret;
431
432 /* bit 2 - 0 */
433 ret = i2c_smbus_read_byte_data(client, HSLOWCTL);
434 if (ret < 0)
435 return ret;
436
437 ret = i2c_smbus_write_byte_data(client, HSLOWCTL,
438 (ret & 0x88) |
439 (hsync->start & 0x0007) << 4 |
440 (hsync->end & 0x0007));
441
442 return ret;
443 }
444
445 static int tw9910_write_array(struct i2c_client *client,
446 const struct regval_list *vals)
447 {
448 while (vals->reg_num != 0xff) {
449 int ret = i2c_smbus_write_byte_data(client,
450 vals->reg_num,
451 vals->value);
452 if (ret < 0)
453 return ret;
454 vals++;
455 }
456 return 0;
457 }
458
459 static int tw9910_mask_set(struct i2c_client *client, u8 command,
460 u8 mask, u8 set)
461 {
462 s32 val = i2c_smbus_read_byte_data(client, command);
463
464 val &= ~mask;
465 val |= set;
466
467 return i2c_smbus_write_byte_data(client, command, val);
468 }
469
470 static void tw9910_reset(struct i2c_client *client)
471 {
472 i2c_smbus_write_byte_data(client, ACNTL1, SRESET);
473 msleep(1);
474 }
475
476 static const struct tw9910_scale_ctrl*
477 tw9910_select_norm(struct soc_camera_device *icd, u32 width, u32 height)
478 {
479 const struct tw9910_scale_ctrl *scale;
480 const struct tw9910_scale_ctrl *ret = NULL;
481 v4l2_std_id norm = icd->vdev->current_norm;
482 __u32 diff = 0xffffffff, tmp;
483 int size, i;
484
485 if (norm & V4L2_STD_NTSC) {
486 scale = tw9910_ntsc_scales;
487 size = ARRAY_SIZE(tw9910_ntsc_scales);
488 } else if (norm & V4L2_STD_PAL) {
489 scale = tw9910_pal_scales;
490 size = ARRAY_SIZE(tw9910_pal_scales);
491 } else {
492 return NULL;
493 }
494
495 for (i = 0; i < size; i++) {
496 tmp = abs(width - scale[i].width) +
497 abs(height - scale[i].height);
498 if (tmp < diff) {
499 diff = tmp;
500 ret = scale + i;
501 }
502 }
503
504 return ret;
505 }
506
507 /*
508 * soc_camera_ops function
509 */
510 static int tw9910_init(struct soc_camera_device *icd)
511 {
512 struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
513 int ret = 0;
514
515 if (priv->info->link.power) {
516 ret = priv->info->link.power(&priv->client->dev, 1);
517 if (ret < 0)
518 return ret;
519 }
520
521 if (priv->info->link.reset)
522 ret = priv->info->link.reset(&priv->client->dev);
523
524 return ret;
525 }
526
527 static int tw9910_release(struct soc_camera_device *icd)
528 {
529 struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
530 int ret = 0;
531
532 if (priv->info->link.power)
533 ret = priv->info->link.power(&priv->client->dev, 0);
534
535 return ret;
536 }
537
538 static int tw9910_start_capture(struct soc_camera_device *icd)
539 {
540 struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
541
542 if (!priv->scale) {
543 dev_err(&icd->dev, "norm select error\n");
544 return -EPERM;
545 }
546
547 dev_dbg(&icd->dev, "%s %dx%d\n",
548 priv->scale->name,
549 priv->scale->width,
550 priv->scale->height);
551
552 return 0;
553 }
554
555 static int tw9910_stop_capture(struct soc_camera_device *icd)
556 {
557 return 0;
558 }
559
560 static int tw9910_set_bus_param(struct soc_camera_device *icd,
561 unsigned long flags)
562 {
563 return 0;
564 }
565
566 static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
567 {
568 struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
569 struct soc_camera_link *icl = priv->client->dev.platform_data;
570 unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
571 SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
572 SOCAM_DATA_ACTIVE_HIGH | priv->info->buswidth;
573
574 return soc_camera_apply_sensor_flags(icl, flags);
575 }
576
577 static int tw9910_get_chip_id(struct soc_camera_device *icd,
578 struct v4l2_dbg_chip_ident *id)
579 {
580 id->ident = V4L2_IDENT_TW9910;
581 id->revision = 0;
582
583 return 0;
584 }
585
586 static int tw9910_set_std(struct soc_camera_device *icd,
587 v4l2_std_id *a)
588 {
589 int ret = -EINVAL;
590
591 if (*a & (V4L2_STD_NTSC | V4L2_STD_PAL))
592 ret = 0;
593
594 return ret;
595 }
596
597 static int tw9910_enum_input(struct soc_camera_device *icd,
598 struct v4l2_input *inp)
599 {
600 inp->type = V4L2_INPUT_TYPE_TUNER;
601 inp->std = V4L2_STD_UNKNOWN;
602 strcpy(inp->name, "Video");
603
604 return 0;
605 }
606
607 #ifdef CONFIG_VIDEO_ADV_DEBUG
608 static int tw9910_get_register(struct soc_camera_device *icd,
609 struct v4l2_dbg_register *reg)
610 {
611 struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
612 int ret;
613
614 if (reg->reg > 0xff)
615 return -EINVAL;
616
617 ret = i2c_smbus_read_byte_data(priv->client, reg->reg);
618 if (ret < 0)
619 return ret;
620
621 /* ret = int
622 * reg->val = __u64
623 */
624 reg->val = (__u64)ret;
625
626 return 0;
627 }
628
629 static int tw9910_set_register(struct soc_camera_device *icd,
630 struct v4l2_dbg_register *reg)
631 {
632 struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
633
634 if (reg->reg > 0xff ||
635 reg->val > 0xff)
636 return -EINVAL;
637
638 return i2c_smbus_write_byte_data(priv->client, reg->reg, reg->val);
639 }
640 #endif
641
642 static int tw9910_set_fmt(struct soc_camera_device *icd, __u32 pixfmt,
643 struct v4l2_rect *rect)
644 {
645 struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
646 int ret = -EINVAL;
647 u8 val;
648 int i;
649
650 /*
651 * check color format
652 */
653 for (i = 0 ; i < ARRAY_SIZE(tw9910_color_fmt) ; i++) {
654 if (pixfmt == tw9910_color_fmt[i].fourcc) {
655 ret = 0;
656 break;
657 }
658 }
659 if (ret < 0)
660 goto tw9910_set_fmt_error;
661
662 /*
663 * select suitable norm
664 */
665 priv->scale = tw9910_select_norm(icd, rect->width, rect->height);
666 if (!priv->scale)
667 goto tw9910_set_fmt_error;
668
669 /*
670 * reset hardware
671 */
672 tw9910_reset(priv->client);
673 ret = tw9910_write_array(priv->client, tw9910_default_regs);
674 if (ret < 0)
675 goto tw9910_set_fmt_error;
676
677 /*
678 * set bus width
679 */
680 val = 0x00;
681 if (SOCAM_DATAWIDTH_16 == priv->info->buswidth)
682 val = LEN;
683
684 ret = tw9910_mask_set(priv->client, OPFORM, LEN, val);
685 if (ret < 0)
686 goto tw9910_set_fmt_error;
687
688 /*
689 * select MPOUT behavior
690 */
691 switch (priv->info->mpout) {
692 case TW9910_MPO_VLOSS:
693 val = RTSEL_VLOSS; break;
694 case TW9910_MPO_HLOCK:
695 val = RTSEL_HLOCK; break;
696 case TW9910_MPO_SLOCK:
697 val = RTSEL_SLOCK; break;
698 case TW9910_MPO_VLOCK:
699 val = RTSEL_VLOCK; break;
700 case TW9910_MPO_MONO:
701 val = RTSEL_MONO; break;
702 case TW9910_MPO_DET50:
703 val = RTSEL_DET50; break;
704 case TW9910_MPO_FIELD:
705 val = RTSEL_FIELD; break;
706 case TW9910_MPO_RTCO:
707 val = RTSEL_RTCO; break;
708 default:
709 val = 0;
710 }
711
712 ret = tw9910_mask_set(priv->client, VBICNTL, RTSEL_MASK, val);
713 if (ret < 0)
714 goto tw9910_set_fmt_error;
715
716 /*
717 * set scale
718 */
719 ret = tw9910_set_scale(priv->client, priv->scale);
720 if (ret < 0)
721 goto tw9910_set_fmt_error;
722
723 /*
724 * set cropping
725 */
726 ret = tw9910_set_cropping(priv->client, &tw9910_cropping_ctrl);
727 if (ret < 0)
728 goto tw9910_set_fmt_error;
729
730 /*
731 * set hsync
732 */
733 ret = tw9910_set_hsync(priv->client, &tw9910_hsync_ctrl);
734 if (ret < 0)
735 goto tw9910_set_fmt_error;
736
737 return ret;
738
739 tw9910_set_fmt_error:
740
741 tw9910_reset(priv->client);
742 priv->scale = NULL;
743
744 return ret;
745 }
746
747 static int tw9910_try_fmt(struct soc_camera_device *icd,
748 struct v4l2_format *f)
749 {
750 struct v4l2_pix_format *pix = &f->fmt.pix;
751 const struct tw9910_scale_ctrl *scale;
752
753 if (V4L2_FIELD_ANY == pix->field) {
754 pix->field = V4L2_FIELD_INTERLACED;
755 } else if (V4L2_FIELD_INTERLACED != pix->field) {
756 dev_err(&icd->dev, "Field type invalid.\n");
757 return -EINVAL;
758 }
759
760 /*
761 * select suitable norm
762 */
763 scale = tw9910_select_norm(icd, pix->width, pix->height);
764 if (!scale)
765 return -EINVAL;
766
767 pix->width = scale->width;
768 pix->height = scale->height;
769
770 return 0;
771 }
772
773 static int tw9910_video_probe(struct soc_camera_device *icd)
774 {
775 struct tw9910_priv *priv = container_of(icd, struct tw9910_priv, icd);
776 s32 val;
777 int ret;
778
779 /*
780 * We must have a parent by now. And it cannot be a wrong one.
781 * So this entire test is completely redundant.
782 */
783 if (!icd->dev.parent ||
784 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
785 return -ENODEV;
786
787 /*
788 * tw9910 only use 8 or 16 bit bus width
789 */
790 if (SOCAM_DATAWIDTH_16 != priv->info->buswidth &&
791 SOCAM_DATAWIDTH_8 != priv->info->buswidth) {
792 dev_err(&icd->dev, "bus width error\n");
793 return -ENODEV;
794 }
795
796 icd->formats = tw9910_color_fmt;
797 icd->num_formats = ARRAY_SIZE(tw9910_color_fmt);
798
799 /*
800 * check and show Product ID
801 */
802 val = i2c_smbus_read_byte_data(priv->client, ID);
803 if (0x0B != GET_ID(val) ||
804 0x00 != GET_ReV(val)) {
805 dev_err(&icd->dev,
806 "Product ID error %x:%x\n", GET_ID(val), GET_ReV(val));
807 return -ENODEV;
808 }
809
810 dev_info(&icd->dev,
811 "tw9910 Product ID %0x:%0x\n", GET_ID(val), GET_ReV(val));
812
813 ret = soc_camera_video_start(icd);
814 if (ret < 0)
815 return ret;
816
817 icd->vdev->tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL;
818 icd->vdev->current_norm = V4L2_STD_NTSC;
819
820 return ret;
821 }
822
823 static void tw9910_video_remove(struct soc_camera_device *icd)
824 {
825 soc_camera_video_stop(icd);
826 }
827
828 static struct soc_camera_ops tw9910_ops = {
829 .owner = THIS_MODULE,
830 .probe = tw9910_video_probe,
831 .remove = tw9910_video_remove,
832 .init = tw9910_init,
833 .release = tw9910_release,
834 .start_capture = tw9910_start_capture,
835 .stop_capture = tw9910_stop_capture,
836 .set_fmt = tw9910_set_fmt,
837 .try_fmt = tw9910_try_fmt,
838 .set_bus_param = tw9910_set_bus_param,
839 .query_bus_param = tw9910_query_bus_param,
840 .get_chip_id = tw9910_get_chip_id,
841 .set_std = tw9910_set_std,
842 .enum_input = tw9910_enum_input,
843 #ifdef CONFIG_VIDEO_ADV_DEBUG
844 .get_register = tw9910_get_register,
845 .set_register = tw9910_set_register,
846 #endif
847 };
848
849 /*
850 * i2c_driver function
851 */
852
853 static int tw9910_probe(struct i2c_client *client,
854 const struct i2c_device_id *did)
855
856 {
857 struct tw9910_priv *priv;
858 struct tw9910_video_info *info;
859 struct soc_camera_device *icd;
860 const struct tw9910_scale_ctrl *scale;
861 int i, ret;
862
863 info = client->dev.platform_data;
864 if (!info)
865 return -EINVAL;
866
867 if (!i2c_check_functionality(to_i2c_adapter(client->dev.parent),
868 I2C_FUNC_SMBUS_BYTE_DATA)) {
869 dev_err(&client->dev,
870 "I2C-Adapter doesn't support "
871 "I2C_FUNC_SMBUS_BYTE_DATA\n");
872 return -EIO;
873 }
874
875 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
876 if (!priv)
877 return -ENOMEM;
878
879 priv->info = info;
880 priv->client = client;
881 i2c_set_clientdata(client, priv);
882
883 icd = &priv->icd;
884 icd->ops = &tw9910_ops;
885 icd->control = &client->dev;
886 icd->iface = info->link.bus_id;
887
888 /*
889 * set width and height
890 */
891 icd->width_max = tw9910_ntsc_scales[0].width; /* set default */
892 icd->width_min = tw9910_ntsc_scales[0].width;
893 icd->height_max = tw9910_ntsc_scales[0].height;
894 icd->height_min = tw9910_ntsc_scales[0].height;
895
896 scale = tw9910_ntsc_scales;
897 for (i = 0; i < ARRAY_SIZE(tw9910_ntsc_scales); i++) {
898 icd->width_max = max(scale[i].width, icd->width_max);
899 icd->width_min = min(scale[i].width, icd->width_min);
900 icd->height_max = max(scale[i].height, icd->height_max);
901 icd->height_min = min(scale[i].height, icd->height_min);
902 }
903 scale = tw9910_pal_scales;
904 for (i = 0; i < ARRAY_SIZE(tw9910_pal_scales); i++) {
905 icd->width_max = max(scale[i].width, icd->width_max);
906 icd->width_min = min(scale[i].width, icd->width_min);
907 icd->height_max = max(scale[i].height, icd->height_max);
908 icd->height_min = min(scale[i].height, icd->height_min);
909 }
910
911 ret = soc_camera_device_register(icd);
912
913 if (ret) {
914 i2c_set_clientdata(client, NULL);
915 kfree(priv);
916 }
917
918 return ret;
919 }
920
921 static int tw9910_remove(struct i2c_client *client)
922 {
923 struct tw9910_priv *priv = i2c_get_clientdata(client);
924
925 soc_camera_device_unregister(&priv->icd);
926 i2c_set_clientdata(client, NULL);
927 kfree(priv);
928 return 0;
929 }
930
931 static const struct i2c_device_id tw9910_id[] = {
932 { "tw9910", 0 },
933 { }
934 };
935 MODULE_DEVICE_TABLE(i2c, tw9910_id);
936
937 static struct i2c_driver tw9910_i2c_driver = {
938 .driver = {
939 .name = "tw9910",
940 },
941 .probe = tw9910_probe,
942 .remove = tw9910_remove,
943 .id_table = tw9910_id,
944 };
945
946 /*
947 * module function
948 */
949 static int __init tw9910_module_init(void)
950 {
951 return i2c_add_driver(&tw9910_i2c_driver);
952 }
953
954 static void __exit tw9910_module_exit(void)
955 {
956 i2c_del_driver(&tw9910_i2c_driver);
957 }
958
959 module_init(tw9910_module_init);
960 module_exit(tw9910_module_exit);
961
962 MODULE_DESCRIPTION("SoC Camera driver for tw9910");
963 MODULE_AUTHOR("Kuninori Morimoto");
964 MODULE_LICENSE("GPL v2");
Linux kernel - Deliverables
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