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/v4l2-mediabus.h>
26 #include <linux/videodev2.h>
27
28 #include <media/soc_camera.h>
29 #include <media/tw9910.h>
30 #include <media/v4l2-chip-ident.h>
31 #include <media/v4l2-subdev.h>
32
33 #define GET_ID(val) ((val & 0xF8) >> 3)
34 #define GET_REV(val) (val & 0x07)
35
36 /*
37 * register offset
38 */
39 #define ID 0x00 /* Product ID Code Register */
40 #define STATUS1 0x01 /* Chip Status Register I */
41 #define INFORM 0x02 /* Input Format */
42 #define OPFORM 0x03 /* Output Format Control Register */
43 #define DLYCTR 0x04 /* Hysteresis and HSYNC Delay Control */
44 #define OUTCTR1 0x05 /* Output Control I */
45 #define ACNTL1 0x06 /* Analog Control Register 1 */
46 #define CROP_HI 0x07 /* Cropping Register, High */
47 #define VDELAY_LO 0x08 /* Vertical Delay Register, Low */
48 #define VACTIVE_LO 0x09 /* Vertical Active Register, Low */
49 #define HDELAY_LO 0x0A /* Horizontal Delay Register, Low */
50 #define HACTIVE_LO 0x0B /* Horizontal Active Register, Low */
51 #define CNTRL1 0x0C /* Control Register I */
52 #define VSCALE_LO 0x0D /* Vertical Scaling Register, Low */
53 #define SCALE_HI 0x0E /* Scaling Register, High */
54 #define HSCALE_LO 0x0F /* Horizontal Scaling Register, Low */
55 #define BRIGHT 0x10 /* BRIGHTNESS Control Register */
56 #define CONTRAST 0x11 /* CONTRAST Control Register */
57 #define SHARPNESS 0x12 /* SHARPNESS Control Register I */
58 #define SAT_U 0x13 /* Chroma (U) Gain Register */
59 #define SAT_V 0x14 /* Chroma (V) Gain Register */
60 #define HUE 0x15 /* Hue Control Register */
61 #define CORING1 0x17
62 #define CORING2 0x18 /* Coring and IF compensation */
63 #define VBICNTL 0x19 /* VBI Control Register */
64 #define ACNTL2 0x1A /* Analog Control 2 */
65 #define OUTCTR2 0x1B /* Output Control 2 */
66 #define SDT 0x1C /* Standard Selection */
67 #define SDTR 0x1D /* Standard Recognition */
68 #define TEST 0x1F /* Test Control Register */
69 #define CLMPG 0x20 /* Clamping Gain */
70 #define IAGC 0x21 /* Individual AGC Gain */
71 #define AGCGAIN 0x22 /* AGC Gain */
72 #define PEAKWT 0x23 /* White Peak Threshold */
73 #define CLMPL 0x24 /* Clamp level */
74 #define SYNCT 0x25 /* Sync Amplitude */
75 #define MISSCNT 0x26 /* Sync Miss Count Register */
76 #define PCLAMP 0x27 /* Clamp Position Register */
77 #define VCNTL1 0x28 /* Vertical Control I */
78 #define VCNTL2 0x29 /* Vertical Control II */
79 #define CKILL 0x2A /* Color Killer Level Control */
80 #define COMB 0x2B /* Comb Filter Control */
81 #define LDLY 0x2C /* Luma Delay and H Filter Control */
82 #define MISC1 0x2D /* Miscellaneous Control I */
83 #define LOOP 0x2E /* LOOP Control Register */
84 #define MISC2 0x2F /* Miscellaneous Control II */
85 #define MVSN 0x30 /* Macrovision Detection */
86 #define STATUS2 0x31 /* Chip STATUS II */
87 #define HFREF 0x32 /* H monitor */
88 #define CLMD 0x33 /* CLAMP MODE */
89 #define IDCNTL 0x34 /* ID Detection Control */
90 #define CLCNTL1 0x35 /* Clamp Control I */
91 #define ANAPLLCTL 0x4C
92 #define VBIMIN 0x4D
93 #define HSLOWCTL 0x4E
94 #define WSS3 0x4F
95 #define FILLDATA 0x50
96 #define SDID 0x51
97 #define DID 0x52
98 #define WSS1 0x53
99 #define WSS2 0x54
100 #define VVBI 0x55
101 #define LCTL6 0x56
102 #define LCTL7 0x57
103 #define LCTL8 0x58
104 #define LCTL9 0x59
105 #define LCTL10 0x5A
106 #define LCTL11 0x5B
107 #define LCTL12 0x5C
108 #define LCTL13 0x5D
109 #define LCTL14 0x5E
110 #define LCTL15 0x5F
111 #define LCTL16 0x60
112 #define LCTL17 0x61
113 #define LCTL18 0x62
114 #define LCTL19 0x63
115 #define LCTL20 0x64
116 #define LCTL21 0x65
117 #define LCTL22 0x66
118 #define LCTL23 0x67
119 #define LCTL24 0x68
120 #define LCTL25 0x69
121 #define LCTL26 0x6A
122 #define HSBEGIN 0x6B
123 #define HSEND 0x6C
124 #define OVSDLY 0x6D
125 #define OVSEND 0x6E
126 #define VBIDELAY 0x6F
127
128 /*
129 * register detail
130 */
131
132 /* INFORM */
133 #define FC27_ON 0x40 /* 1 : Input crystal clock frequency is 27MHz */
134 #define FC27_FF 0x00 /* 0 : Square pixel mode. */
135 /* Must use 24.54MHz for 60Hz field rate */
136 /* source or 29.5MHz for 50Hz field rate */
137 #define IFSEL_S 0x10 /* 01 : S-video decoding */
138 #define IFSEL_C 0x00 /* 00 : Composite video decoding */
139 /* Y input video selection */
140 #define YSEL_M0 0x00 /* 00 : Mux0 selected */
141 #define YSEL_M1 0x04 /* 01 : Mux1 selected */
142 #define YSEL_M2 0x08 /* 10 : Mux2 selected */
143 #define YSEL_M3 0x10 /* 11 : Mux3 selected */
144
145 /* OPFORM */
146 #define MODE 0x80 /* 0 : CCIR601 compatible YCrCb 4:2:2 format */
147 /* 1 : ITU-R-656 compatible data sequence format */
148 #define LEN 0x40 /* 0 : 8-bit YCrCb 4:2:2 output format */
149 /* 1 : 16-bit YCrCb 4:2:2 output format.*/
150 #define LLCMODE 0x20 /* 1 : LLC output mode. */
151 /* 0 : free-run output mode */
152 #define AINC 0x10 /* Serial interface auto-indexing control */
153 /* 0 : auto-increment */
154 /* 1 : non-auto */
155 #define VSCTL 0x08 /* 1 : Vertical out ctrl by DVALID */
156 /* 0 : Vertical out ctrl by HACTIVE and DVALID */
157 #define OEN_TRI_SEL_MASK 0x07
158 #define OEN_TRI_SEL_ALL_ON 0x00 /* Enable output for Rev0/Rev1 */
159 #define OEN_TRI_SEL_ALL_OFF_r0 0x06 /* All tri-stated for Rev0 */
160 #define OEN_TRI_SEL_ALL_OFF_r1 0x07 /* All tri-stated for Rev1 */
161
162 /* OUTCTR1 */
163 #define VSP_LO 0x00 /* 0 : VS pin output polarity is active low */
164 #define VSP_HI 0x80 /* 1 : VS pin output polarity is active high. */
165 /* VS pin output control */
166 #define VSSL_VSYNC 0x00 /* 0 : VSYNC */
167 #define VSSL_VACT 0x10 /* 1 : VACT */
168 #define VSSL_FIELD 0x20 /* 2 : FIELD */
169 #define VSSL_VVALID 0x30 /* 3 : VVALID */
170 #define VSSL_ZERO 0x70 /* 7 : 0 */
171 #define HSP_LOW 0x00 /* 0 : HS pin output polarity is active low */
172 #define HSP_HI 0x08 /* 1 : HS pin output polarity is active high.*/
173 /* HS pin output control */
174 #define HSSL_HACT 0x00 /* 0 : HACT */
175 #define HSSL_HSYNC 0x01 /* 1 : HSYNC */
176 #define HSSL_DVALID 0x02 /* 2 : DVALID */
177 #define HSSL_HLOCK 0x03 /* 3 : HLOCK */
178 #define HSSL_ASYNCW 0x04 /* 4 : ASYNCW */
179 #define HSSL_ZERO 0x07 /* 7 : 0 */
180
181 /* ACNTL1 */
182 #define SRESET 0x80 /* resets the device to its default state
183 * but all register content remain unchanged.
184 * This bit is self-resetting.
185 */
186 #define ACNTL1_PDN_MASK 0x0e
187 #define CLK_PDN 0x08 /* system clock power down */
188 #define Y_PDN 0x04 /* Luma ADC power down */
189 #define C_PDN 0x02 /* Chroma ADC power down */
190
191 /* ACNTL2 */
192 #define ACNTL2_PDN_MASK 0x40
193 #define PLL_PDN 0x40 /* PLL power down */
194
195 /* VBICNTL */
196
197 /* RTSEL : control the real time signal output from the MPOUT pin */
198 #define RTSEL_MASK 0x07
199 #define RTSEL_VLOSS 0x00 /* 0000 = Video loss */
200 #define RTSEL_HLOCK 0x01 /* 0001 = H-lock */
201 #define RTSEL_SLOCK 0x02 /* 0010 = S-lock */
202 #define RTSEL_VLOCK 0x03 /* 0011 = V-lock */
203 #define RTSEL_MONO 0x04 /* 0100 = MONO */
204 #define RTSEL_DET50 0x05 /* 0101 = DET50 */
205 #define RTSEL_FIELD 0x06 /* 0110 = FIELD */
206 #define RTSEL_RTCO 0x07 /* 0111 = RTCO ( Real Time Control ) */
207
208 /* HSYNC start and end are constant for now */
209 #define HSYNC_START 0x0260
210 #define HSYNC_END 0x0300
211
212 /*
213 * structure
214 */
215
216 struct regval_list {
217 unsigned char reg_num;
218 unsigned char value;
219 };
220
221 struct tw9910_scale_ctrl {
222 char *name;
223 unsigned short width;
224 unsigned short height;
225 u16 hscale;
226 u16 vscale;
227 };
228
229 struct tw9910_priv {
230 struct v4l2_subdev subdev;
231 struct tw9910_video_info *info;
232 const struct tw9910_scale_ctrl *scale;
233 v4l2_std_id norm;
234 u32 revision;
235 };
236
237 static const struct tw9910_scale_ctrl tw9910_ntsc_scales[] = {
238 {
239 .name = "NTSC SQ",
240 .width = 640,
241 .height = 480,
242 .hscale = 0x0100,
243 .vscale = 0x0100,
244 },
245 {
246 .name = "NTSC CCIR601",
247 .width = 720,
248 .height = 480,
249 .hscale = 0x0100,
250 .vscale = 0x0100,
251 },
252 {
253 .name = "NTSC SQ (CIF)",
254 .width = 320,
255 .height = 240,
256 .hscale = 0x0200,
257 .vscale = 0x0200,
258 },
259 {
260 .name = "NTSC CCIR601 (CIF)",
261 .width = 360,
262 .height = 240,
263 .hscale = 0x0200,
264 .vscale = 0x0200,
265 },
266 {
267 .name = "NTSC SQ (QCIF)",
268 .width = 160,
269 .height = 120,
270 .hscale = 0x0400,
271 .vscale = 0x0400,
272 },
273 {
274 .name = "NTSC CCIR601 (QCIF)",
275 .width = 180,
276 .height = 120,
277 .hscale = 0x0400,
278 .vscale = 0x0400,
279 },
280 };
281
282 static const struct tw9910_scale_ctrl tw9910_pal_scales[] = {
283 {
284 .name = "PAL SQ",
285 .width = 768,
286 .height = 576,
287 .hscale = 0x0100,
288 .vscale = 0x0100,
289 },
290 {
291 .name = "PAL CCIR601",
292 .width = 720,
293 .height = 576,
294 .hscale = 0x0100,
295 .vscale = 0x0100,
296 },
297 {
298 .name = "PAL SQ (CIF)",
299 .width = 384,
300 .height = 288,
301 .hscale = 0x0200,
302 .vscale = 0x0200,
303 },
304 {
305 .name = "PAL CCIR601 (CIF)",
306 .width = 360,
307 .height = 288,
308 .hscale = 0x0200,
309 .vscale = 0x0200,
310 },
311 {
312 .name = "PAL SQ (QCIF)",
313 .width = 192,
314 .height = 144,
315 .hscale = 0x0400,
316 .vscale = 0x0400,
317 },
318 {
319 .name = "PAL CCIR601 (QCIF)",
320 .width = 180,
321 .height = 144,
322 .hscale = 0x0400,
323 .vscale = 0x0400,
324 },
325 };
326
327 /*
328 * general function
329 */
to_tw9910(const struct i2c_client * client)330 static struct tw9910_priv *to_tw9910(const struct i2c_client *client)
331 {
332 return container_of(i2c_get_clientdata(client), struct tw9910_priv,
333 subdev);
334 }
335
tw9910_mask_set(struct i2c_client * client,u8 command,u8 mask,u8 set)336 static int tw9910_mask_set(struct i2c_client *client, u8 command,
337 u8 mask, u8 set)
338 {
339 s32 val = i2c_smbus_read_byte_data(client, command);
340 if (val < 0)
341 return val;
342
343 val &= ~mask;
344 val |= set & mask;
345
346 return i2c_smbus_write_byte_data(client, command, val);
347 }
348
tw9910_set_scale(struct i2c_client * client,const struct tw9910_scale_ctrl * scale)349 static int tw9910_set_scale(struct i2c_client *client,
350 const struct tw9910_scale_ctrl *scale)
351 {
352 int ret;
353
354 ret = i2c_smbus_write_byte_data(client, SCALE_HI,
355 (scale->vscale & 0x0F00) >> 4 |
356 (scale->hscale & 0x0F00) >> 8);
357 if (ret < 0)
358 return ret;
359
360 ret = i2c_smbus_write_byte_data(client, HSCALE_LO,
361 scale->hscale & 0x00FF);
362 if (ret < 0)
363 return ret;
364
365 ret = i2c_smbus_write_byte_data(client, VSCALE_LO,
366 scale->vscale & 0x00FF);
367
368 return ret;
369 }
370
tw9910_set_hsync(struct i2c_client * client)371 static int tw9910_set_hsync(struct i2c_client *client)
372 {
373 struct tw9910_priv *priv = to_tw9910(client);
374 int ret;
375
376 /* bit 10 - 3 */
377 ret = i2c_smbus_write_byte_data(client, HSBEGIN,
378 (HSYNC_START & 0x07F8) >> 3);
379 if (ret < 0)
380 return ret;
381
382 /* bit 10 - 3 */
383 ret = i2c_smbus_write_byte_data(client, HSEND,
384 (HSYNC_END & 0x07F8) >> 3);
385 if (ret < 0)
386 return ret;
387
388 /* So far only revisions 0 and 1 have been seen */
389 /* bit 2 - 0 */
390 if (1 == priv->revision)
391 ret = tw9910_mask_set(client, HSLOWCTL, 0x77,
392 (HSYNC_START & 0x0007) << 4 |
393 (HSYNC_END & 0x0007));
394
395 return ret;
396 }
397
tw9910_reset(struct i2c_client * client)398 static void tw9910_reset(struct i2c_client *client)
399 {
400 tw9910_mask_set(client, ACNTL1, SRESET, SRESET);
401 msleep(1);
402 }
403
tw9910_power(struct i2c_client * client,int enable)404 static int tw9910_power(struct i2c_client *client, int enable)
405 {
406 int ret;
407 u8 acntl1;
408 u8 acntl2;
409
410 if (enable) {
411 acntl1 = 0;
412 acntl2 = 0;
413 } else {
414 acntl1 = CLK_PDN | Y_PDN | C_PDN;
415 acntl2 = PLL_PDN;
416 }
417
418 ret = tw9910_mask_set(client, ACNTL1, ACNTL1_PDN_MASK, acntl1);
419 if (ret < 0)
420 return ret;
421
422 return tw9910_mask_set(client, ACNTL2, ACNTL2_PDN_MASK, acntl2);
423 }
424
tw9910_select_norm(v4l2_std_id norm,u32 width,u32 height)425 static const struct tw9910_scale_ctrl *tw9910_select_norm(v4l2_std_id norm,
426 u32 width, u32 height)
427 {
428 const struct tw9910_scale_ctrl *scale;
429 const struct tw9910_scale_ctrl *ret = NULL;
430 __u32 diff = 0xffffffff, tmp;
431 int size, i;
432
433 if (norm & V4L2_STD_NTSC) {
434 scale = tw9910_ntsc_scales;
435 size = ARRAY_SIZE(tw9910_ntsc_scales);
436 } else if (norm & V4L2_STD_PAL) {
437 scale = tw9910_pal_scales;
438 size = ARRAY_SIZE(tw9910_pal_scales);
439 } else {
440 return NULL;
441 }
442
443 for (i = 0; i < size; i++) {
444 tmp = abs(width - scale[i].width) +
445 abs(height - scale[i].height);
446 if (tmp < diff) {
447 diff = tmp;
448 ret = scale + i;
449 }
450 }
451
452 return ret;
453 }
454
455 /*
456 * subdevice operations
457 */
tw9910_s_stream(struct v4l2_subdev * sd,int enable)458 static int tw9910_s_stream(struct v4l2_subdev *sd, int enable)
459 {
460 struct i2c_client *client = v4l2_get_subdevdata(sd);
461 struct tw9910_priv *priv = to_tw9910(client);
462 u8 val;
463 int ret;
464
465 if (!enable) {
466 switch (priv->revision) {
467 case 0:
468 val = OEN_TRI_SEL_ALL_OFF_r0;
469 break;
470 case 1:
471 val = OEN_TRI_SEL_ALL_OFF_r1;
472 break;
473 default:
474 dev_err(&client->dev, "un-supported revision\n");
475 return -EINVAL;
476 }
477 } else {
478 val = OEN_TRI_SEL_ALL_ON;
479
480 if (!priv->scale) {
481 dev_err(&client->dev, "norm select error\n");
482 return -EPERM;
483 }
484
485 dev_dbg(&client->dev, "%s %dx%d\n",
486 priv->scale->name,
487 priv->scale->width,
488 priv->scale->height);
489 }
490
491 ret = tw9910_mask_set(client, OPFORM, OEN_TRI_SEL_MASK, val);
492 if (ret < 0)
493 return ret;
494
495 return tw9910_power(client, enable);
496 }
497
tw9910_g_std(struct v4l2_subdev * sd,v4l2_std_id * norm)498 static int tw9910_g_std(struct v4l2_subdev *sd, v4l2_std_id *norm)
499 {
500 struct i2c_client *client = v4l2_get_subdevdata(sd);
501 struct tw9910_priv *priv = to_tw9910(client);
502
503 *norm = priv->norm;
504
505 return 0;
506 }
507
tw9910_s_std(struct v4l2_subdev * sd,v4l2_std_id norm)508 static int tw9910_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
509 {
510 struct i2c_client *client = v4l2_get_subdevdata(sd);
511 struct tw9910_priv *priv = to_tw9910(client);
512
513 if (!(norm & (V4L2_STD_NTSC | V4L2_STD_PAL)))
514 return -EINVAL;
515
516 priv->norm = norm;
517
518 return 0;
519 }
520
tw9910_g_chip_ident(struct v4l2_subdev * sd,struct v4l2_dbg_chip_ident * id)521 static int tw9910_g_chip_ident(struct v4l2_subdev *sd,
522 struct v4l2_dbg_chip_ident *id)
523 {
524 struct i2c_client *client = v4l2_get_subdevdata(sd);
525 struct tw9910_priv *priv = to_tw9910(client);
526
527 id->ident = V4L2_IDENT_TW9910;
528 id->revision = priv->revision;
529
530 return 0;
531 }
532
533 #ifdef CONFIG_VIDEO_ADV_DEBUG
tw9910_g_register(struct v4l2_subdev * sd,struct v4l2_dbg_register * reg)534 static int tw9910_g_register(struct v4l2_subdev *sd,
535 struct v4l2_dbg_register *reg)
536 {
537 struct i2c_client *client = v4l2_get_subdevdata(sd);
538 int ret;
539
540 if (reg->reg > 0xff)
541 return -EINVAL;
542
543 ret = i2c_smbus_read_byte_data(client, reg->reg);
544 if (ret < 0)
545 return ret;
546
547 /*
548 * ret = int
549 * reg->val = __u64
550 */
551 reg->val = (__u64)ret;
552
553 return 0;
554 }
555
tw9910_s_register(struct v4l2_subdev * sd,struct v4l2_dbg_register * reg)556 static int tw9910_s_register(struct v4l2_subdev *sd,
557 struct v4l2_dbg_register *reg)
558 {
559 struct i2c_client *client = v4l2_get_subdevdata(sd);
560
561 if (reg->reg > 0xff ||
562 reg->val > 0xff)
563 return -EINVAL;
564
565 return i2c_smbus_write_byte_data(client, reg->reg, reg->val);
566 }
567 #endif
568
tw9910_set_frame(struct v4l2_subdev * sd,u32 * width,u32 * height)569 static int tw9910_set_frame(struct v4l2_subdev *sd, u32 *width, u32 *height)
570 {
571 struct i2c_client *client = v4l2_get_subdevdata(sd);
572 struct tw9910_priv *priv = to_tw9910(client);
573 int ret = -EINVAL;
574 u8 val;
575
576 /*
577 * select suitable norm
578 */
579 priv->scale = tw9910_select_norm(priv->norm, *width, *height);
580 if (!priv->scale)
581 goto tw9910_set_fmt_error;
582
583 /*
584 * reset hardware
585 */
586 tw9910_reset(client);
587
588 /*
589 * set bus width
590 */
591 val = 0x00;
592 if (SOCAM_DATAWIDTH_16 == priv->info->buswidth)
593 val = LEN;
594
595 ret = tw9910_mask_set(client, OPFORM, LEN, val);
596 if (ret < 0)
597 goto tw9910_set_fmt_error;
598
599 /*
600 * select MPOUT behavior
601 */
602 switch (priv->info->mpout) {
603 case TW9910_MPO_VLOSS:
604 val = RTSEL_VLOSS; break;
605 case TW9910_MPO_HLOCK:
606 val = RTSEL_HLOCK; break;
607 case TW9910_MPO_SLOCK:
608 val = RTSEL_SLOCK; break;
609 case TW9910_MPO_VLOCK:
610 val = RTSEL_VLOCK; break;
611 case TW9910_MPO_MONO:
612 val = RTSEL_MONO; break;
613 case TW9910_MPO_DET50:
614 val = RTSEL_DET50; break;
615 case TW9910_MPO_FIELD:
616 val = RTSEL_FIELD; break;
617 case TW9910_MPO_RTCO:
618 val = RTSEL_RTCO; break;
619 default:
620 val = 0;
621 }
622
623 ret = tw9910_mask_set(client, VBICNTL, RTSEL_MASK, val);
624 if (ret < 0)
625 goto tw9910_set_fmt_error;
626
627 /*
628 * set scale
629 */
630 ret = tw9910_set_scale(client, priv->scale);
631 if (ret < 0)
632 goto tw9910_set_fmt_error;
633
634 /*
635 * set hsync
636 */
637 ret = tw9910_set_hsync(client);
638 if (ret < 0)
639 goto tw9910_set_fmt_error;
640
641 *width = priv->scale->width;
642 *height = priv->scale->height;
643
644 return ret;
645
646 tw9910_set_fmt_error:
647
648 tw9910_reset(client);
649 priv->scale = NULL;
650
651 return ret;
652 }
653
tw9910_g_crop(struct v4l2_subdev * sd,struct v4l2_crop * a)654 static int tw9910_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
655 {
656 struct i2c_client *client = v4l2_get_subdevdata(sd);
657 struct tw9910_priv *priv = to_tw9910(client);
658
659 a->c.left = 0;
660 a->c.top = 0;
661 if (priv->norm & V4L2_STD_NTSC) {
662 a->c.width = 640;
663 a->c.height = 480;
664 } else {
665 a->c.width = 768;
666 a->c.height = 576;
667 }
668 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
669
670 return 0;
671 }
672
tw9910_cropcap(struct v4l2_subdev * sd,struct v4l2_cropcap * a)673 static int tw9910_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
674 {
675 struct i2c_client *client = v4l2_get_subdevdata(sd);
676 struct tw9910_priv *priv = to_tw9910(client);
677
678 a->bounds.left = 0;
679 a->bounds.top = 0;
680 if (priv->norm & V4L2_STD_NTSC) {
681 a->bounds.width = 640;
682 a->bounds.height = 480;
683 } else {
684 a->bounds.width = 768;
685 a->bounds.height = 576;
686 }
687 a->defrect = a->bounds;
688 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
689 a->pixelaspect.numerator = 1;
690 a->pixelaspect.denominator = 1;
691
692 return 0;
693 }
694
tw9910_g_fmt(struct v4l2_subdev * sd,struct v4l2_mbus_framefmt * mf)695 static int tw9910_g_fmt(struct v4l2_subdev *sd,
696 struct v4l2_mbus_framefmt *mf)
697 {
698 struct i2c_client *client = v4l2_get_subdevdata(sd);
699 struct tw9910_priv *priv = to_tw9910(client);
700
701 if (!priv->scale) {
702 int ret;
703 u32 width = 640, height = 480;
704 ret = tw9910_set_frame(sd, &width, &height);
705 if (ret < 0)
706 return ret;
707 }
708
709 mf->width = priv->scale->width;
710 mf->height = priv->scale->height;
711 mf->code = V4L2_MBUS_FMT_UYVY8_2X8;
712 mf->colorspace = V4L2_COLORSPACE_JPEG;
713 mf->field = V4L2_FIELD_INTERLACED_BT;
714
715 return 0;
716 }
717
tw9910_s_fmt(struct v4l2_subdev * sd,struct v4l2_mbus_framefmt * mf)718 static int tw9910_s_fmt(struct v4l2_subdev *sd,
719 struct v4l2_mbus_framefmt *mf)
720 {
721 u32 width = mf->width, height = mf->height;
722 int ret;
723
724 WARN_ON(mf->field != V4L2_FIELD_ANY &&
725 mf->field != V4L2_FIELD_INTERLACED_BT);
726
727 /*
728 * check color format
729 */
730 if (mf->code != V4L2_MBUS_FMT_UYVY8_2X8)
731 return -EINVAL;
732
733 mf->colorspace = V4L2_COLORSPACE_JPEG;
734
735 ret = tw9910_set_frame(sd, &width, &height);
736 if (!ret) {
737 mf->width = width;
738 mf->height = height;
739 }
740 return ret;
741 }
742
tw9910_try_fmt(struct v4l2_subdev * sd,struct v4l2_mbus_framefmt * mf)743 static int tw9910_try_fmt(struct v4l2_subdev *sd,
744 struct v4l2_mbus_framefmt *mf)
745 {
746 struct i2c_client *client = v4l2_get_subdevdata(sd);
747 struct tw9910_priv *priv = to_tw9910(client);
748 const struct tw9910_scale_ctrl *scale;
749
750 if (V4L2_FIELD_ANY == mf->field) {
751 mf->field = V4L2_FIELD_INTERLACED_BT;
752 } else if (V4L2_FIELD_INTERLACED_BT != mf->field) {
753 dev_err(&client->dev, "Field type %d invalid.\n", mf->field);
754 return -EINVAL;
755 }
756
757 mf->code = V4L2_MBUS_FMT_UYVY8_2X8;
758 mf->colorspace = V4L2_COLORSPACE_JPEG;
759
760 /*
761 * select suitable norm
762 */
763 scale = tw9910_select_norm(priv->norm, mf->width, mf->height);
764 if (!scale)
765 return -EINVAL;
766
767 mf->width = scale->width;
768 mf->height = scale->height;
769
770 return 0;
771 }
772
tw9910_video_probe(struct i2c_client * client)773 static int tw9910_video_probe(struct i2c_client *client)
774 {
775 struct tw9910_priv *priv = to_tw9910(client);
776 s32 id;
777
778 /*
779 * tw9910 only use 8 or 16 bit bus width
780 */
781 if (SOCAM_DATAWIDTH_16 != priv->info->buswidth &&
782 SOCAM_DATAWIDTH_8 != priv->info->buswidth) {
783 dev_err(&client->dev, "bus width error\n");
784 return -ENODEV;
785 }
786
787 /*
788 * check and show Product ID
789 * So far only revisions 0 and 1 have been seen
790 */
791 id = i2c_smbus_read_byte_data(client, ID);
792 priv->revision = GET_REV(id);
793 id = GET_ID(id);
794
795 if (0x0B != id ||
796 0x01 < priv->revision) {
797 dev_err(&client->dev,
798 "Product ID error %x:%x\n",
799 id, priv->revision);
800 return -ENODEV;
801 }
802
803 dev_info(&client->dev,
804 "tw9910 Product ID %0x:%0x\n", id, priv->revision);
805
806 priv->norm = V4L2_STD_NTSC;
807
808 return 0;
809 }
810
811 static struct v4l2_subdev_core_ops tw9910_subdev_core_ops = {
812 .g_chip_ident = tw9910_g_chip_ident,
813 .s_std = tw9910_s_std,
814 .g_std = tw9910_g_std,
815 #ifdef CONFIG_VIDEO_ADV_DEBUG
816 .g_register = tw9910_g_register,
817 .s_register = tw9910_s_register,
818 #endif
819 };
820
tw9910_enum_fmt(struct v4l2_subdev * sd,unsigned int index,enum v4l2_mbus_pixelcode * code)821 static int tw9910_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
822 enum v4l2_mbus_pixelcode *code)
823 {
824 if (index)
825 return -EINVAL;
826
827 *code = V4L2_MBUS_FMT_UYVY8_2X8;
828 return 0;
829 }
830
tw9910_g_mbus_config(struct v4l2_subdev * sd,struct v4l2_mbus_config * cfg)831 static int tw9910_g_mbus_config(struct v4l2_subdev *sd,
832 struct v4l2_mbus_config *cfg)
833 {
834 struct i2c_client *client = v4l2_get_subdevdata(sd);
835 struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
836
837 cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_MASTER |
838 V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW |
839 V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW |
840 V4L2_MBUS_DATA_ACTIVE_HIGH;
841 cfg->type = V4L2_MBUS_PARALLEL;
842 cfg->flags = soc_camera_apply_board_flags(icl, cfg);
843
844 return 0;
845 }
846
tw9910_s_mbus_config(struct v4l2_subdev * sd,const struct v4l2_mbus_config * cfg)847 static int tw9910_s_mbus_config(struct v4l2_subdev *sd,
848 const struct v4l2_mbus_config *cfg)
849 {
850 struct i2c_client *client = v4l2_get_subdevdata(sd);
851 struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
852 u8 val = VSSL_VVALID | HSSL_DVALID;
853 unsigned long flags = soc_camera_apply_board_flags(icl, cfg);
854
855 /*
856 * set OUTCTR1
857 *
858 * We use VVALID and DVALID signals to control VSYNC and HSYNC
859 * outputs, in this mode their polarity is inverted.
860 */
861 if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
862 val |= HSP_HI;
863
864 if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
865 val |= VSP_HI;
866
867 return i2c_smbus_write_byte_data(client, OUTCTR1, val);
868 }
869
870 static struct v4l2_subdev_video_ops tw9910_subdev_video_ops = {
871 .s_stream = tw9910_s_stream,
872 .g_mbus_fmt = tw9910_g_fmt,
873 .s_mbus_fmt = tw9910_s_fmt,
874 .try_mbus_fmt = tw9910_try_fmt,
875 .cropcap = tw9910_cropcap,
876 .g_crop = tw9910_g_crop,
877 .enum_mbus_fmt = tw9910_enum_fmt,
878 .g_mbus_config = tw9910_g_mbus_config,
879 .s_mbus_config = tw9910_s_mbus_config,
880 };
881
882 static struct v4l2_subdev_ops tw9910_subdev_ops = {
883 .core = &tw9910_subdev_core_ops,
884 .video = &tw9910_subdev_video_ops,
885 };
886
887 /*
888 * i2c_driver function
889 */
890
tw9910_probe(struct i2c_client * client,const struct i2c_device_id * did)891 static int tw9910_probe(struct i2c_client *client,
892 const struct i2c_device_id *did)
893
894 {
895 struct tw9910_priv *priv;
896 struct tw9910_video_info *info;
897 struct i2c_adapter *adapter =
898 to_i2c_adapter(client->dev.parent);
899 struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
900 int ret;
901
902 if (!icl || !icl->priv) {
903 dev_err(&client->dev, "TW9910: missing platform data!\n");
904 return -EINVAL;
905 }
906
907 info = icl->priv;
908
909 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
910 dev_err(&client->dev,
911 "I2C-Adapter doesn't support "
912 "I2C_FUNC_SMBUS_BYTE_DATA\n");
913 return -EIO;
914 }
915
916 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
917 if (!priv)
918 return -ENOMEM;
919
920 priv->info = info;
921
922 v4l2_i2c_subdev_init(&priv->subdev, client, &tw9910_subdev_ops);
923
924 ret = tw9910_video_probe(client);
925 if (ret)
926 kfree(priv);
927
928 return ret;
929 }
930
tw9910_remove(struct i2c_client * client)931 static int tw9910_remove(struct i2c_client *client)
932 {
933 struct tw9910_priv *priv = to_tw9910(client);
934
935 kfree(priv);
936 return 0;
937 }
938
939 static const struct i2c_device_id tw9910_id[] = {
940 { "tw9910", 0 },
941 { }
942 };
943 MODULE_DEVICE_TABLE(i2c, tw9910_id);
944
945 static struct i2c_driver tw9910_i2c_driver = {
946 .driver = {
947 .name = "tw9910",
948 },
949 .probe = tw9910_probe,
950 .remove = tw9910_remove,
951 .id_table = tw9910_id,
952 };
953
954 /*
955 * module function
956 */
tw9910_module_init(void)957 static int __init tw9910_module_init(void)
958 {
959 return i2c_add_driver(&tw9910_i2c_driver);
960 }
961
tw9910_module_exit(void)962 static void __exit tw9910_module_exit(void)
963 {
964 i2c_del_driver(&tw9910_i2c_driver);
965 }
966
967 module_init(tw9910_module_init);
968 module_exit(tw9910_module_exit);
969
970 MODULE_DESCRIPTION("SoC Camera driver for tw9910");
971 MODULE_AUTHOR("Kuninori Morimoto");
972 MODULE_LICENSE("GPL v2");
973