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V4L/DVB (13656): tw9910: tw9910_set_hsync clean up
[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-subdev.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_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 */
159
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 */
184 #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 */
192
193 /* VBICNTL */
194
195 /* RTSEL : control the real time signal output from the MPOUT pin */
196 #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
210 struct regval_list {
211 unsigned char reg_num;
212 unsigned char value;
213 };
214
215 struct tw9910_scale_ctrl {
216 char *name;
217 unsigned short width;
218 unsigned short height;
219 u16 hscale;
220 u16 vscale;
221 };
222
223 struct tw9910_cropping_ctrl {
224 u16 vdelay;
225 u16 vactive;
226 u16 hdelay;
227 u16 hactive;
228 };
229
230 struct tw9910_hsync_ctrl {
231 u16 start;
232 u16 end;
233 };
234
235 struct tw9910_priv {
236 struct v4l2_subdev subdev;
237 struct tw9910_video_info *info;
238 const struct tw9910_scale_ctrl *scale;
239 u32 revision;
240 };
241
242 /*
243 * register settings
244 */
245
246 #define ENDMARKER { 0xff, 0xff }
247
248 static const struct regval_list tw9910_default_regs[] =
249 {
250 { OUTCTR1, VSP_LO | VSSL_VVALID | HSP_HI | HSSL_HSYNC },
251 ENDMARKER,
252 };
253
254 static const struct soc_camera_data_format tw9910_color_fmt[] = {
255 {
256 .name = "VYUY",
257 .fourcc = V4L2_PIX_FMT_VYUY,
258 .depth = 16,
259 .colorspace = V4L2_COLORSPACE_SMPTE170M,
260 }
261 };
262
263 static const struct tw9910_scale_ctrl tw9910_ntsc_scales[] = {
264 {
265 .name = "NTSC SQ",
266 .width = 640,
267 .height = 480,
268 .hscale = 0x0100,
269 .vscale = 0x0100,
270 },
271 {
272 .name = "NTSC CCIR601",
273 .width = 720,
274 .height = 480,
275 .hscale = 0x0100,
276 .vscale = 0x0100,
277 },
278 {
279 .name = "NTSC SQ (CIF)",
280 .width = 320,
281 .height = 240,
282 .hscale = 0x0200,
283 .vscale = 0x0200,
284 },
285 {
286 .name = "NTSC CCIR601 (CIF)",
287 .width = 360,
288 .height = 240,
289 .hscale = 0x0200,
290 .vscale = 0x0200,
291 },
292 {
293 .name = "NTSC SQ (QCIF)",
294 .width = 160,
295 .height = 120,
296 .hscale = 0x0400,
297 .vscale = 0x0400,
298 },
299 {
300 .name = "NTSC CCIR601 (QCIF)",
301 .width = 180,
302 .height = 120,
303 .hscale = 0x0400,
304 .vscale = 0x0400,
305 },
306 };
307
308 static const struct tw9910_scale_ctrl tw9910_pal_scales[] = {
309 {
310 .name = "PAL SQ",
311 .width = 768,
312 .height = 576,
313 .hscale = 0x0100,
314 .vscale = 0x0100,
315 },
316 {
317 .name = "PAL CCIR601",
318 .width = 720,
319 .height = 576,
320 .hscale = 0x0100,
321 .vscale = 0x0100,
322 },
323 {
324 .name = "PAL SQ (CIF)",
325 .width = 384,
326 .height = 288,
327 .hscale = 0x0200,
328 .vscale = 0x0200,
329 },
330 {
331 .name = "PAL CCIR601 (CIF)",
332 .width = 360,
333 .height = 288,
334 .hscale = 0x0200,
335 .vscale = 0x0200,
336 },
337 {
338 .name = "PAL SQ (QCIF)",
339 .width = 192,
340 .height = 144,
341 .hscale = 0x0400,
342 .vscale = 0x0400,
343 },
344 {
345 .name = "PAL CCIR601 (QCIF)",
346 .width = 180,
347 .height = 144,
348 .hscale = 0x0400,
349 .vscale = 0x0400,
350 },
351 };
352
353 static const struct tw9910_cropping_ctrl tw9910_cropping_ctrl = {
354 .vdelay = 0x0012,
355 .vactive = 0x00F0,
356 .hdelay = 0x0010,
357 .hactive = 0x02D0,
358 };
359
360 static const struct tw9910_hsync_ctrl tw9910_hsync_ctrl = {
361 .start = 0x0260,
362 .end = 0x0300,
363 };
364
365 /*
366 * general function
367 */
368 static struct tw9910_priv *to_tw9910(const struct i2c_client *client)
369 {
370 return container_of(i2c_get_clientdata(client), struct tw9910_priv,
371 subdev);
372 }
373
374 static int tw9910_mask_set(struct i2c_client *client, u8 command,
375 u8 mask, u8 set)
376 {
377 s32 val = i2c_smbus_read_byte_data(client, command);
378 if (val < 0)
379 return val;
380
381 val &= ~mask;
382 val |= set & mask;
383
384 return i2c_smbus_write_byte_data(client, command, val);
385 }
386
387 static int tw9910_set_scale(struct i2c_client *client,
388 const struct tw9910_scale_ctrl *scale)
389 {
390 int ret;
391
392 ret = i2c_smbus_write_byte_data(client, SCALE_HI,
393 (scale->vscale & 0x0F00) >> 4 |
394 (scale->hscale & 0x0F00) >> 8);
395 if (ret < 0)
396 return ret;
397
398 ret = i2c_smbus_write_byte_data(client, HSCALE_LO,
399 scale->hscale & 0x00FF);
400 if (ret < 0)
401 return ret;
402
403 ret = i2c_smbus_write_byte_data(client, VSCALE_LO,
404 scale->vscale & 0x00FF);
405
406 return ret;
407 }
408
409 static int tw9910_set_cropping(struct i2c_client *client,
410 const struct tw9910_cropping_ctrl *cropping)
411 {
412 int ret;
413
414 ret = i2c_smbus_write_byte_data(client, CROP_HI,
415 (cropping->vdelay & 0x0300) >> 2 |
416 (cropping->vactive & 0x0300) >> 4 |
417 (cropping->hdelay & 0x0300) >> 6 |
418 (cropping->hactive & 0x0300) >> 8);
419 if (ret < 0)
420 return ret;
421
422 ret = i2c_smbus_write_byte_data(client, VDELAY_LO,
423 cropping->vdelay & 0x00FF);
424 if (ret < 0)
425 return ret;
426
427 ret = i2c_smbus_write_byte_data(client, VACTIVE_LO,
428 cropping->vactive & 0x00FF);
429 if (ret < 0)
430 return ret;
431
432 ret = i2c_smbus_write_byte_data(client, HDELAY_LO,
433 cropping->hdelay & 0x00FF);
434 if (ret < 0)
435 return ret;
436
437 ret = i2c_smbus_write_byte_data(client, HACTIVE_LO,
438 cropping->hactive & 0x00FF);
439
440 return ret;
441 }
442
443 static int tw9910_set_hsync(struct i2c_client *client,
444 const struct tw9910_hsync_ctrl *hsync)
445 {
446 int ret;
447
448 /* bit 10 - 3 */
449 ret = i2c_smbus_write_byte_data(client, HSGEGIN,
450 (hsync->start & 0x07F8) >> 3);
451 if (ret < 0)
452 return ret;
453
454 /* bit 10 - 3 */
455 ret = i2c_smbus_write_byte_data(client, HSEND,
456 (hsync->end & 0x07F8) >> 3);
457 if (ret < 0)
458 return ret;
459
460 /* bit 2 - 0 */
461 ret = tw9910_mask_set(client, HSLOWCTL, 0x77,
462 (hsync->start & 0x0007) << 4 |
463 (hsync->end & 0x0007));
464
465 return ret;
466 }
467
468 static int tw9910_write_array(struct i2c_client *client,
469 const struct regval_list *vals)
470 {
471 while (vals->reg_num != 0xff) {
472 int ret = i2c_smbus_write_byte_data(client,
473 vals->reg_num,
474 vals->value);
475 if (ret < 0)
476 return ret;
477 vals++;
478 }
479 return 0;
480 }
481
482 static void tw9910_reset(struct i2c_client *client)
483 {
484 tw9910_mask_set(client, ACNTL1, SRESET, SRESET);
485 msleep(1);
486 }
487
488 static int tw9910_power(struct i2c_client *client, int enable)
489 {
490 int ret;
491 u8 acntl1;
492 u8 acntl2;
493
494 if (enable) {
495 acntl1 = 0;
496 acntl2 = 0;
497 } else {
498 acntl1 = CLK_PDN | Y_PDN | C_PDN;
499 acntl2 = PLL_PDN;
500 }
501
502 ret = tw9910_mask_set(client, ACNTL1, ACNTL1_PDN_MASK, acntl1);
503 if (ret < 0)
504 return ret;
505
506 return tw9910_mask_set(client, ACNTL2, ACNTL2_PDN_MASK, acntl2);
507 }
508
509 static const struct tw9910_scale_ctrl*
510 tw9910_select_norm(struct soc_camera_device *icd, u32 width, u32 height)
511 {
512 const struct tw9910_scale_ctrl *scale;
513 const struct tw9910_scale_ctrl *ret = NULL;
514 v4l2_std_id norm = icd->vdev->current_norm;
515 __u32 diff = 0xffffffff, tmp;
516 int size, i;
517
518 if (norm & V4L2_STD_NTSC) {
519 scale = tw9910_ntsc_scales;
520 size = ARRAY_SIZE(tw9910_ntsc_scales);
521 } else if (norm & V4L2_STD_PAL) {
522 scale = tw9910_pal_scales;
523 size = ARRAY_SIZE(tw9910_pal_scales);
524 } else {
525 return NULL;
526 }
527
528 for (i = 0; i < size; i++) {
529 tmp = abs(width - scale[i].width) +
530 abs(height - scale[i].height);
531 if (tmp < diff) {
532 diff = tmp;
533 ret = scale + i;
534 }
535 }
536
537 return ret;
538 }
539
540 /*
541 * soc_camera_ops function
542 */
543 static int tw9910_s_stream(struct v4l2_subdev *sd, int enable)
544 {
545 struct i2c_client *client = sd->priv;
546 struct tw9910_priv *priv = to_tw9910(client);
547 u8 val;
548 int ret;
549
550 if (!enable) {
551 switch (priv->revision) {
552 case 0:
553 val = OEN_TRI_SEL_ALL_OFF_r0;
554 break;
555 case 1:
556 val = OEN_TRI_SEL_ALL_OFF_r1;
557 break;
558 default:
559 dev_err(&client->dev, "un-supported revision\n");
560 return -EINVAL;
561 }
562 } else {
563 val = OEN_TRI_SEL_ALL_ON;
564
565 if (!priv->scale) {
566 dev_err(&client->dev, "norm select error\n");
567 return -EPERM;
568 }
569
570 dev_dbg(&client->dev, "%s %dx%d\n",
571 priv->scale->name,
572 priv->scale->width,
573 priv->scale->height);
574 }
575
576 ret = tw9910_mask_set(client, OPFORM, OEN_TRI_SEL_MASK, val);
577 if (ret < 0)
578 return ret;
579
580 return tw9910_power(client, enable);
581 }
582
583 static int tw9910_set_bus_param(struct soc_camera_device *icd,
584 unsigned long flags)
585 {
586 return 0;
587 }
588
589 static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
590 {
591 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
592 struct tw9910_priv *priv = to_tw9910(client);
593 struct soc_camera_link *icl = to_soc_camera_link(icd);
594 unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
595 SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
596 SOCAM_DATA_ACTIVE_HIGH | priv->info->buswidth;
597
598 return soc_camera_apply_sensor_flags(icl, flags);
599 }
600
601 static int tw9910_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
602 {
603 int ret = -EINVAL;
604
605 if (norm & (V4L2_STD_NTSC | V4L2_STD_PAL))
606 ret = 0;
607
608 return ret;
609 }
610
611 static int tw9910_enum_input(struct soc_camera_device *icd,
612 struct v4l2_input *inp)
613 {
614 inp->type = V4L2_INPUT_TYPE_TUNER;
615 inp->std = V4L2_STD_UNKNOWN;
616 strcpy(inp->name, "Video");
617
618 return 0;
619 }
620
621 static int tw9910_g_chip_ident(struct v4l2_subdev *sd,
622 struct v4l2_dbg_chip_ident *id)
623 {
624 struct i2c_client *client = sd->priv;
625 struct tw9910_priv *priv = to_tw9910(client);
626
627 id->ident = V4L2_IDENT_TW9910;
628 id->revision = priv->revision;
629
630 return 0;
631 }
632
633 #ifdef CONFIG_VIDEO_ADV_DEBUG
634 static int tw9910_g_register(struct v4l2_subdev *sd,
635 struct v4l2_dbg_register *reg)
636 {
637 struct i2c_client *client = sd->priv;
638 int ret;
639
640 if (reg->reg > 0xff)
641 return -EINVAL;
642
643 ret = i2c_smbus_read_byte_data(client, reg->reg);
644 if (ret < 0)
645 return ret;
646
647 /*
648 * ret = int
649 * reg->val = __u64
650 */
651 reg->val = (__u64)ret;
652
653 return 0;
654 }
655
656 static int tw9910_s_register(struct v4l2_subdev *sd,
657 struct v4l2_dbg_register *reg)
658 {
659 struct i2c_client *client = sd->priv;
660
661 if (reg->reg > 0xff ||
662 reg->val > 0xff)
663 return -EINVAL;
664
665 return i2c_smbus_write_byte_data(client, reg->reg, reg->val);
666 }
667 #endif
668
669 static int tw9910_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
670 {
671 struct v4l2_rect *rect = &a->c;
672 struct i2c_client *client = sd->priv;
673 struct tw9910_priv *priv = to_tw9910(client);
674 struct soc_camera_device *icd = client->dev.platform_data;
675 int ret = -EINVAL;
676 u8 val;
677
678 /*
679 * select suitable norm
680 */
681 priv->scale = tw9910_select_norm(icd, rect->width, rect->height);
682 if (!priv->scale)
683 goto tw9910_set_fmt_error;
684
685 /*
686 * reset hardware
687 */
688 tw9910_reset(client);
689 ret = tw9910_write_array(client, tw9910_default_regs);
690 if (ret < 0)
691 goto tw9910_set_fmt_error;
692
693 /*
694 * set bus width
695 */
696 val = 0x00;
697 if (SOCAM_DATAWIDTH_16 == priv->info->buswidth)
698 val = LEN;
699
700 ret = tw9910_mask_set(client, OPFORM, LEN, val);
701 if (ret < 0)
702 goto tw9910_set_fmt_error;
703
704 /*
705 * select MPOUT behavior
706 */
707 switch (priv->info->mpout) {
708 case TW9910_MPO_VLOSS:
709 val = RTSEL_VLOSS; break;
710 case TW9910_MPO_HLOCK:
711 val = RTSEL_HLOCK; break;
712 case TW9910_MPO_SLOCK:
713 val = RTSEL_SLOCK; break;
714 case TW9910_MPO_VLOCK:
715 val = RTSEL_VLOCK; break;
716 case TW9910_MPO_MONO:
717 val = RTSEL_MONO; break;
718 case TW9910_MPO_DET50:
719 val = RTSEL_DET50; break;
720 case TW9910_MPO_FIELD:
721 val = RTSEL_FIELD; break;
722 case TW9910_MPO_RTCO:
723 val = RTSEL_RTCO; break;
724 default:
725 val = 0;
726 }
727
728 ret = tw9910_mask_set(client, VBICNTL, RTSEL_MASK, val);
729 if (ret < 0)
730 goto tw9910_set_fmt_error;
731
732 /*
733 * set scale
734 */
735 ret = tw9910_set_scale(client, priv->scale);
736 if (ret < 0)
737 goto tw9910_set_fmt_error;
738
739 /*
740 * set cropping
741 */
742 ret = tw9910_set_cropping(client, &tw9910_cropping_ctrl);
743 if (ret < 0)
744 goto tw9910_set_fmt_error;
745
746 /*
747 * set hsync
748 */
749 ret = tw9910_set_hsync(client, &tw9910_hsync_ctrl);
750 if (ret < 0)
751 goto tw9910_set_fmt_error;
752
753 rect->width = priv->scale->width;
754 rect->height = priv->scale->height;
755 rect->left = 0;
756 rect->top = 0;
757
758 return ret;
759
760 tw9910_set_fmt_error:
761
762 tw9910_reset(client);
763 priv->scale = NULL;
764
765 return ret;
766 }
767
768 static int tw9910_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
769 {
770 struct i2c_client *client = sd->priv;
771 struct tw9910_priv *priv = to_tw9910(client);
772
773 if (!priv->scale) {
774 int ret;
775 struct v4l2_crop crop = {
776 .c = {
777 .left = 0,
778 .top = 0,
779 .width = 640,
780 .height = 480,
781 },
782 };
783 ret = tw9910_s_crop(sd, &crop);
784 if (ret < 0)
785 return ret;
786 }
787
788 a->c.left = 0;
789 a->c.top = 0;
790 a->c.width = priv->scale->width;
791 a->c.height = priv->scale->height;
792 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
793
794 return 0;
795 }
796
797 static int tw9910_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
798 {
799 a->bounds.left = 0;
800 a->bounds.top = 0;
801 a->bounds.width = 768;
802 a->bounds.height = 576;
803 a->defrect.left = 0;
804 a->defrect.top = 0;
805 a->defrect.width = 640;
806 a->defrect.height = 480;
807 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
808 a->pixelaspect.numerator = 1;
809 a->pixelaspect.denominator = 1;
810
811 return 0;
812 }
813
814 static int tw9910_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
815 {
816 struct i2c_client *client = sd->priv;
817 struct tw9910_priv *priv = to_tw9910(client);
818 struct v4l2_pix_format *pix = &f->fmt.pix;
819
820 if (!priv->scale) {
821 int ret;
822 struct v4l2_crop crop = {
823 .c = {
824 .left = 0,
825 .top = 0,
826 .width = 640,
827 .height = 480,
828 },
829 };
830 ret = tw9910_s_crop(sd, &crop);
831 if (ret < 0)
832 return ret;
833 }
834
835 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
836
837 pix->width = priv->scale->width;
838 pix->height = priv->scale->height;
839 pix->pixelformat = V4L2_PIX_FMT_VYUY;
840 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
841 pix->field = V4L2_FIELD_INTERLACED;
842
843 return 0;
844 }
845
846 static int tw9910_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
847 {
848 struct i2c_client *client = sd->priv;
849 struct tw9910_priv *priv = to_tw9910(client);
850 struct v4l2_pix_format *pix = &f->fmt.pix;
851 /* See tw9910_s_crop() - no proper cropping support */
852 struct v4l2_crop a = {
853 .c = {
854 .left = 0,
855 .top = 0,
856 .width = pix->width,
857 .height = pix->height,
858 },
859 };
860 int i, ret;
861
862 /*
863 * check color format
864 */
865 for (i = 0; i < ARRAY_SIZE(tw9910_color_fmt); i++)
866 if (pix->pixelformat == tw9910_color_fmt[i].fourcc)
867 break;
868
869 if (i == ARRAY_SIZE(tw9910_color_fmt))
870 return -EINVAL;
871
872 ret = tw9910_s_crop(sd, &a);
873 if (!ret) {
874 pix->width = priv->scale->width;
875 pix->height = priv->scale->height;
876 }
877 return ret;
878 }
879
880 static int tw9910_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
881 {
882 struct i2c_client *client = sd->priv;
883 struct soc_camera_device *icd = client->dev.platform_data;
884 struct v4l2_pix_format *pix = &f->fmt.pix;
885 const struct tw9910_scale_ctrl *scale;
886
887 if (V4L2_FIELD_ANY == pix->field) {
888 pix->field = V4L2_FIELD_INTERLACED;
889 } else if (V4L2_FIELD_INTERLACED != pix->field) {
890 dev_err(&client->dev, "Field type invalid.\n");
891 return -EINVAL;
892 }
893
894 /*
895 * select suitable norm
896 */
897 scale = tw9910_select_norm(icd, pix->width, pix->height);
898 if (!scale)
899 return -EINVAL;
900
901 pix->width = scale->width;
902 pix->height = scale->height;
903
904 return 0;
905 }
906
907 static int tw9910_video_probe(struct soc_camera_device *icd,
908 struct i2c_client *client)
909 {
910 struct tw9910_priv *priv = to_tw9910(client);
911 s32 id;
912
913 /*
914 * We must have a parent by now. And it cannot be a wrong one.
915 * So this entire test is completely redundant.
916 */
917 if (!icd->dev.parent ||
918 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
919 return -ENODEV;
920
921 /*
922 * tw9910 only use 8 or 16 bit bus width
923 */
924 if (SOCAM_DATAWIDTH_16 != priv->info->buswidth &&
925 SOCAM_DATAWIDTH_8 != priv->info->buswidth) {
926 dev_err(&client->dev, "bus width error\n");
927 return -ENODEV;
928 }
929
930 icd->formats = tw9910_color_fmt;
931 icd->num_formats = ARRAY_SIZE(tw9910_color_fmt);
932
933 /*
934 * check and show Product ID
935 * So far only revisions 0 and 1 have been seen
936 */
937 id = i2c_smbus_read_byte_data(client, ID);
938 priv->revision = GET_REV(id);
939 id = GET_ID(id);
940
941 if (0x0B != id ||
942 0x01 < priv->revision) {
943 dev_err(&client->dev,
944 "Product ID error %x:%x\n",
945 id, priv->revision);
946 return -ENODEV;
947 }
948
949 dev_info(&client->dev,
950 "tw9910 Product ID %0x:%0x\n", id, priv->revision);
951
952 icd->vdev->tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL;
953 icd->vdev->current_norm = V4L2_STD_NTSC;
954
955 return 0;
956 }
957
958 static struct soc_camera_ops tw9910_ops = {
959 .set_bus_param = tw9910_set_bus_param,
960 .query_bus_param = tw9910_query_bus_param,
961 .enum_input = tw9910_enum_input,
962 };
963
964 static struct v4l2_subdev_core_ops tw9910_subdev_core_ops = {
965 .g_chip_ident = tw9910_g_chip_ident,
966 .s_std = tw9910_s_std,
967 #ifdef CONFIG_VIDEO_ADV_DEBUG
968 .g_register = tw9910_g_register,
969 .s_register = tw9910_s_register,
970 #endif
971 };
972
973 static struct v4l2_subdev_video_ops tw9910_subdev_video_ops = {
974 .s_stream = tw9910_s_stream,
975 .g_fmt = tw9910_g_fmt,
976 .s_fmt = tw9910_s_fmt,
977 .try_fmt = tw9910_try_fmt,
978 .cropcap = tw9910_cropcap,
979 .g_crop = tw9910_g_crop,
980 .s_crop = tw9910_s_crop,
981 };
982
983 static struct v4l2_subdev_ops tw9910_subdev_ops = {
984 .core = &tw9910_subdev_core_ops,
985 .video = &tw9910_subdev_video_ops,
986 };
987
988 /*
989 * i2c_driver function
990 */
991
992 static int tw9910_probe(struct i2c_client *client,
993 const struct i2c_device_id *did)
994
995 {
996 struct tw9910_priv *priv;
997 struct tw9910_video_info *info;
998 struct soc_camera_device *icd = client->dev.platform_data;
999 struct i2c_adapter *adapter =
1000 to_i2c_adapter(client->dev.parent);
1001 struct soc_camera_link *icl;
1002 int ret;
1003
1004 if (!icd) {
1005 dev_err(&client->dev, "TW9910: missing soc-camera data!\n");
1006 return -EINVAL;
1007 }
1008
1009 icl = to_soc_camera_link(icd);
1010 if (!icl || !icl->priv)
1011 return -EINVAL;
1012
1013 info = icl->priv;
1014
1015 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1016 dev_err(&client->dev,
1017 "I2C-Adapter doesn't support "
1018 "I2C_FUNC_SMBUS_BYTE_DATA\n");
1019 return -EIO;
1020 }
1021
1022 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1023 if (!priv)
1024 return -ENOMEM;
1025
1026 priv->info = info;
1027
1028 v4l2_i2c_subdev_init(&priv->subdev, client, &tw9910_subdev_ops);
1029
1030 icd->ops = &tw9910_ops;
1031 icd->iface = icl->bus_id;
1032
1033 ret = tw9910_video_probe(icd, client);
1034 if (ret) {
1035 icd->ops = NULL;
1036 i2c_set_clientdata(client, NULL);
1037 kfree(priv);
1038 }
1039
1040 return ret;
1041 }
1042
1043 static int tw9910_remove(struct i2c_client *client)
1044 {
1045 struct tw9910_priv *priv = to_tw9910(client);
1046 struct soc_camera_device *icd = client->dev.platform_data;
1047
1048 icd->ops = NULL;
1049 i2c_set_clientdata(client, NULL);
1050 kfree(priv);
1051 return 0;
1052 }
1053
1054 static const struct i2c_device_id tw9910_id[] = {
1055 { "tw9910", 0 },
1056 { }
1057 };
1058 MODULE_DEVICE_TABLE(i2c, tw9910_id);
1059
1060 static struct i2c_driver tw9910_i2c_driver = {
1061 .driver = {
1062 .name = "tw9910",
1063 },
1064 .probe = tw9910_probe,
1065 .remove = tw9910_remove,
1066 .id_table = tw9910_id,
1067 };
1068
1069 /*
1070 * module function
1071 */
1072 static int __init tw9910_module_init(void)
1073 {
1074 return i2c_add_driver(&tw9910_i2c_driver);
1075 }
1076
1077 static void __exit tw9910_module_exit(void)
1078 {
1079 i2c_del_driver(&tw9910_i2c_driver);
1080 }
1081
1082 module_init(tw9910_module_init);
1083 module_exit(tw9910_module_exit);
1084
1085 MODULE_DESCRIPTION("SoC Camera driver for tw9910");
1086 MODULE_AUTHOR("Kuninori Morimoto");
1087 MODULE_LICENSE("GPL v2");
Linux kernel - Deliverables
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