1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * adv7183.c Analog Devices ADV7183 video decoder driver
4 *
5 * Copyright (c) 2011 Analog Devices Inc.
6 */
7
8 #include <linux/delay.h>
9 #include <linux/errno.h>
10 #include <linux/gpio/consumer.h>
11 #include <linux/i2c.h>
12 #include <linux/init.h>
13 #include <linux/module.h>
14 #include <linux/slab.h>
15 #include <linux/types.h>
16 #include <linux/videodev2.h>
17
18 #include <media/i2c/adv7183.h>
19 #include <media/v4l2-ctrls.h>
20 #include <media/v4l2-device.h>
21
22 #include "adv7183_regs.h"
23
24 struct adv7183 {
25 struct v4l2_subdev sd;
26 struct v4l2_ctrl_handler hdl;
27
28 v4l2_std_id std; /* Current set standard */
29 u32 input;
30 u32 output;
31 struct gpio_desc *reset_pin;
32 struct gpio_desc *oe_pin;
33 struct v4l2_mbus_framefmt fmt;
34 };
35
36 /* EXAMPLES USING 27 MHz CLOCK
37 * Mode 1 CVBS Input (Composite Video on AIN5)
38 * All standards are supported through autodetect, 8-bit, 4:2:2, ITU-R BT.656 output on P15 to P8.
39 */
40 static const unsigned char adv7183_init_regs[] = {
41 ADV7183_IN_CTRL, 0x04, /* CVBS input on AIN5 */
42 ADV7183_DIGI_CLAMP_CTRL_1, 0x00, /* Slow down digital clamps */
43 ADV7183_SHAP_FILT_CTRL, 0x41, /* Set CSFM to SH1 */
44 ADV7183_ADC_CTRL, 0x16, /* Power down ADC 1 and ADC 2 */
45 ADV7183_CTI_DNR_CTRL_4, 0x04, /* Set DNR threshold to 4 for flat response */
46 /* ADI recommended programming sequence */
47 ADV7183_ADI_CTRL, 0x80,
48 ADV7183_CTI_DNR_CTRL_4, 0x20,
49 0x52, 0x18,
50 0x58, 0xED,
51 0x77, 0xC5,
52 0x7C, 0x93,
53 0x7D, 0x00,
54 0xD0, 0x48,
55 0xD5, 0xA0,
56 0xD7, 0xEA,
57 ADV7183_SD_SATURATION_CR, 0x3E,
58 ADV7183_PAL_V_END, 0x3E,
59 ADV7183_PAL_F_TOGGLE, 0x0F,
60 ADV7183_ADI_CTRL, 0x00,
61 };
62
to_adv7183(struct v4l2_subdev * sd)63 static inline struct adv7183 *to_adv7183(struct v4l2_subdev *sd)
64 {
65 return container_of(sd, struct adv7183, sd);
66 }
to_sd(struct v4l2_ctrl * ctrl)67 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
68 {
69 return &container_of(ctrl->handler, struct adv7183, hdl)->sd;
70 }
71
adv7183_read(struct v4l2_subdev * sd,unsigned char reg)72 static inline int adv7183_read(struct v4l2_subdev *sd, unsigned char reg)
73 {
74 struct i2c_client *client = v4l2_get_subdevdata(sd);
75
76 return i2c_smbus_read_byte_data(client, reg);
77 }
78
adv7183_write(struct v4l2_subdev * sd,unsigned char reg,unsigned char value)79 static inline int adv7183_write(struct v4l2_subdev *sd, unsigned char reg,
80 unsigned char value)
81 {
82 struct i2c_client *client = v4l2_get_subdevdata(sd);
83
84 return i2c_smbus_write_byte_data(client, reg, value);
85 }
86
adv7183_writeregs(struct v4l2_subdev * sd,const unsigned char * regs,unsigned int num)87 static int adv7183_writeregs(struct v4l2_subdev *sd,
88 const unsigned char *regs, unsigned int num)
89 {
90 unsigned char reg, data;
91 unsigned int cnt = 0;
92
93 if (num & 0x1) {
94 v4l2_err(sd, "invalid regs array\n");
95 return -1;
96 }
97
98 while (cnt < num) {
99 reg = *regs++;
100 data = *regs++;
101 cnt += 2;
102
103 adv7183_write(sd, reg, data);
104 }
105 return 0;
106 }
107
adv7183_log_status(struct v4l2_subdev * sd)108 static int adv7183_log_status(struct v4l2_subdev *sd)
109 {
110 struct adv7183 *decoder = to_adv7183(sd);
111
112 v4l2_info(sd, "adv7183: Input control = 0x%02x\n",
113 adv7183_read(sd, ADV7183_IN_CTRL));
114 v4l2_info(sd, "adv7183: Video selection = 0x%02x\n",
115 adv7183_read(sd, ADV7183_VD_SEL));
116 v4l2_info(sd, "adv7183: Output control = 0x%02x\n",
117 adv7183_read(sd, ADV7183_OUT_CTRL));
118 v4l2_info(sd, "adv7183: Extended output control = 0x%02x\n",
119 adv7183_read(sd, ADV7183_EXT_OUT_CTRL));
120 v4l2_info(sd, "adv7183: Autodetect enable = 0x%02x\n",
121 adv7183_read(sd, ADV7183_AUTO_DET_EN));
122 v4l2_info(sd, "adv7183: Contrast = 0x%02x\n",
123 adv7183_read(sd, ADV7183_CONTRAST));
124 v4l2_info(sd, "adv7183: Brightness = 0x%02x\n",
125 adv7183_read(sd, ADV7183_BRIGHTNESS));
126 v4l2_info(sd, "adv7183: Hue = 0x%02x\n",
127 adv7183_read(sd, ADV7183_HUE));
128 v4l2_info(sd, "adv7183: Default value Y = 0x%02x\n",
129 adv7183_read(sd, ADV7183_DEF_Y));
130 v4l2_info(sd, "adv7183: Default value C = 0x%02x\n",
131 adv7183_read(sd, ADV7183_DEF_C));
132 v4l2_info(sd, "adv7183: ADI control = 0x%02x\n",
133 adv7183_read(sd, ADV7183_ADI_CTRL));
134 v4l2_info(sd, "adv7183: Power Management = 0x%02x\n",
135 adv7183_read(sd, ADV7183_POW_MANAGE));
136 v4l2_info(sd, "adv7183: Status 1 2 and 3 = 0x%02x 0x%02x 0x%02x\n",
137 adv7183_read(sd, ADV7183_STATUS_1),
138 adv7183_read(sd, ADV7183_STATUS_2),
139 adv7183_read(sd, ADV7183_STATUS_3));
140 v4l2_info(sd, "adv7183: Ident = 0x%02x\n",
141 adv7183_read(sd, ADV7183_IDENT));
142 v4l2_info(sd, "adv7183: Analog clamp control = 0x%02x\n",
143 adv7183_read(sd, ADV7183_ANAL_CLAMP_CTRL));
144 v4l2_info(sd, "adv7183: Digital clamp control 1 = 0x%02x\n",
145 adv7183_read(sd, ADV7183_DIGI_CLAMP_CTRL_1));
146 v4l2_info(sd, "adv7183: Shaping filter control 1 and 2 = 0x%02x 0x%02x\n",
147 adv7183_read(sd, ADV7183_SHAP_FILT_CTRL),
148 adv7183_read(sd, ADV7183_SHAP_FILT_CTRL_2));
149 v4l2_info(sd, "adv7183: Comb filter control = 0x%02x\n",
150 adv7183_read(sd, ADV7183_COMB_FILT_CTRL));
151 v4l2_info(sd, "adv7183: ADI control 2 = 0x%02x\n",
152 adv7183_read(sd, ADV7183_ADI_CTRL_2));
153 v4l2_info(sd, "adv7183: Pixel delay control = 0x%02x\n",
154 adv7183_read(sd, ADV7183_PIX_DELAY_CTRL));
155 v4l2_info(sd, "adv7183: Misc gain control = 0x%02x\n",
156 adv7183_read(sd, ADV7183_MISC_GAIN_CTRL));
157 v4l2_info(sd, "adv7183: AGC mode control = 0x%02x\n",
158 adv7183_read(sd, ADV7183_AGC_MODE_CTRL));
159 v4l2_info(sd, "adv7183: Chroma gain control 1 and 2 = 0x%02x 0x%02x\n",
160 adv7183_read(sd, ADV7183_CHRO_GAIN_CTRL_1),
161 adv7183_read(sd, ADV7183_CHRO_GAIN_CTRL_2));
162 v4l2_info(sd, "adv7183: Luma gain control 1 and 2 = 0x%02x 0x%02x\n",
163 adv7183_read(sd, ADV7183_LUMA_GAIN_CTRL_1),
164 adv7183_read(sd, ADV7183_LUMA_GAIN_CTRL_2));
165 v4l2_info(sd, "adv7183: Vsync field control 1 2 and 3 = 0x%02x 0x%02x 0x%02x\n",
166 adv7183_read(sd, ADV7183_VS_FIELD_CTRL_1),
167 adv7183_read(sd, ADV7183_VS_FIELD_CTRL_2),
168 adv7183_read(sd, ADV7183_VS_FIELD_CTRL_3));
169 v4l2_info(sd, "adv7183: Hsync position control 1 2 and 3 = 0x%02x 0x%02x 0x%02x\n",
170 adv7183_read(sd, ADV7183_HS_POS_CTRL_1),
171 adv7183_read(sd, ADV7183_HS_POS_CTRL_2),
172 adv7183_read(sd, ADV7183_HS_POS_CTRL_3));
173 v4l2_info(sd, "adv7183: Polarity = 0x%02x\n",
174 adv7183_read(sd, ADV7183_POLARITY));
175 v4l2_info(sd, "adv7183: ADC control = 0x%02x\n",
176 adv7183_read(sd, ADV7183_ADC_CTRL));
177 v4l2_info(sd, "adv7183: SD offset Cb and Cr = 0x%02x 0x%02x\n",
178 adv7183_read(sd, ADV7183_SD_OFFSET_CB),
179 adv7183_read(sd, ADV7183_SD_OFFSET_CR));
180 v4l2_info(sd, "adv7183: SD saturation Cb and Cr = 0x%02x 0x%02x\n",
181 adv7183_read(sd, ADV7183_SD_SATURATION_CB),
182 adv7183_read(sd, ADV7183_SD_SATURATION_CR));
183 v4l2_info(sd, "adv7183: Drive strength = 0x%02x\n",
184 adv7183_read(sd, ADV7183_DRIVE_STR));
185 v4l2_ctrl_handler_log_status(&decoder->hdl, sd->name);
186 return 0;
187 }
188
adv7183_g_std(struct v4l2_subdev * sd,v4l2_std_id * std)189 static int adv7183_g_std(struct v4l2_subdev *sd, v4l2_std_id *std)
190 {
191 struct adv7183 *decoder = to_adv7183(sd);
192
193 *std = decoder->std;
194 return 0;
195 }
196
adv7183_s_std(struct v4l2_subdev * sd,v4l2_std_id std)197 static int adv7183_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
198 {
199 struct adv7183 *decoder = to_adv7183(sd);
200 int reg;
201
202 reg = adv7183_read(sd, ADV7183_IN_CTRL) & 0xF;
203 if (std == V4L2_STD_PAL_60)
204 reg |= 0x60;
205 else if (std == V4L2_STD_NTSC_443)
206 reg |= 0x70;
207 else if (std == V4L2_STD_PAL_N)
208 reg |= 0x90;
209 else if (std == V4L2_STD_PAL_M)
210 reg |= 0xA0;
211 else if (std == V4L2_STD_PAL_Nc)
212 reg |= 0xC0;
213 else if (std & V4L2_STD_PAL)
214 reg |= 0x80;
215 else if (std & V4L2_STD_NTSC)
216 reg |= 0x50;
217 else if (std & V4L2_STD_SECAM)
218 reg |= 0xE0;
219 else
220 return -EINVAL;
221 adv7183_write(sd, ADV7183_IN_CTRL, reg);
222
223 decoder->std = std;
224
225 return 0;
226 }
227
adv7183_reset(struct v4l2_subdev * sd,u32 val)228 static int adv7183_reset(struct v4l2_subdev *sd, u32 val)
229 {
230 int reg;
231
232 reg = adv7183_read(sd, ADV7183_POW_MANAGE) | 0x80;
233 adv7183_write(sd, ADV7183_POW_MANAGE, reg);
234 /* wait 5ms before any further i2c writes are performed */
235 usleep_range(5000, 10000);
236 return 0;
237 }
238
adv7183_s_routing(struct v4l2_subdev * sd,u32 input,u32 output,u32 config)239 static int adv7183_s_routing(struct v4l2_subdev *sd,
240 u32 input, u32 output, u32 config)
241 {
242 struct adv7183 *decoder = to_adv7183(sd);
243 int reg;
244
245 if ((input > ADV7183_COMPONENT1) || (output > ADV7183_16BIT_OUT))
246 return -EINVAL;
247
248 if (input != decoder->input) {
249 decoder->input = input;
250 reg = adv7183_read(sd, ADV7183_IN_CTRL) & 0xF0;
251 switch (input) {
252 case ADV7183_COMPOSITE1:
253 reg |= 0x1;
254 break;
255 case ADV7183_COMPOSITE2:
256 reg |= 0x2;
257 break;
258 case ADV7183_COMPOSITE3:
259 reg |= 0x3;
260 break;
261 case ADV7183_COMPOSITE4:
262 reg |= 0x4;
263 break;
264 case ADV7183_COMPOSITE5:
265 reg |= 0x5;
266 break;
267 case ADV7183_COMPOSITE6:
268 reg |= 0xB;
269 break;
270 case ADV7183_COMPOSITE7:
271 reg |= 0xC;
272 break;
273 case ADV7183_COMPOSITE8:
274 reg |= 0xD;
275 break;
276 case ADV7183_COMPOSITE9:
277 reg |= 0xE;
278 break;
279 case ADV7183_COMPOSITE10:
280 reg |= 0xF;
281 break;
282 case ADV7183_SVIDEO0:
283 reg |= 0x6;
284 break;
285 case ADV7183_SVIDEO1:
286 reg |= 0x7;
287 break;
288 case ADV7183_SVIDEO2:
289 reg |= 0x8;
290 break;
291 case ADV7183_COMPONENT0:
292 reg |= 0x9;
293 break;
294 case ADV7183_COMPONENT1:
295 reg |= 0xA;
296 break;
297 default:
298 break;
299 }
300 adv7183_write(sd, ADV7183_IN_CTRL, reg);
301 }
302
303 if (output != decoder->output) {
304 decoder->output = output;
305 reg = adv7183_read(sd, ADV7183_OUT_CTRL) & 0xC0;
306 switch (output) {
307 case ADV7183_16BIT_OUT:
308 reg |= 0x9;
309 break;
310 default:
311 reg |= 0xC;
312 break;
313 }
314 adv7183_write(sd, ADV7183_OUT_CTRL, reg);
315 }
316
317 return 0;
318 }
319
adv7183_s_ctrl(struct v4l2_ctrl * ctrl)320 static int adv7183_s_ctrl(struct v4l2_ctrl *ctrl)
321 {
322 struct v4l2_subdev *sd = to_sd(ctrl);
323 int val = ctrl->val;
324
325 switch (ctrl->id) {
326 case V4L2_CID_BRIGHTNESS:
327 if (val < 0)
328 val = 127 - val;
329 adv7183_write(sd, ADV7183_BRIGHTNESS, val);
330 break;
331 case V4L2_CID_CONTRAST:
332 adv7183_write(sd, ADV7183_CONTRAST, val);
333 break;
334 case V4L2_CID_SATURATION:
335 adv7183_write(sd, ADV7183_SD_SATURATION_CB, val >> 8);
336 adv7183_write(sd, ADV7183_SD_SATURATION_CR, (val & 0xFF));
337 break;
338 case V4L2_CID_HUE:
339 adv7183_write(sd, ADV7183_SD_OFFSET_CB, val >> 8);
340 adv7183_write(sd, ADV7183_SD_OFFSET_CR, (val & 0xFF));
341 break;
342 default:
343 return -EINVAL;
344 }
345
346 return 0;
347 }
348
adv7183_querystd(struct v4l2_subdev * sd,v4l2_std_id * std)349 static int adv7183_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
350 {
351 struct adv7183 *decoder = to_adv7183(sd);
352 int reg;
353
354 /* enable autodetection block */
355 reg = adv7183_read(sd, ADV7183_IN_CTRL) & 0xF;
356 adv7183_write(sd, ADV7183_IN_CTRL, reg);
357
358 /* wait autodetection switch */
359 mdelay(10);
360
361 /* get autodetection result */
362 reg = adv7183_read(sd, ADV7183_STATUS_1);
363 switch ((reg >> 0x4) & 0x7) {
364 case 0:
365 *std &= V4L2_STD_NTSC;
366 break;
367 case 1:
368 *std &= V4L2_STD_NTSC_443;
369 break;
370 case 2:
371 *std &= V4L2_STD_PAL_M;
372 break;
373 case 3:
374 *std &= V4L2_STD_PAL_60;
375 break;
376 case 4:
377 *std &= V4L2_STD_PAL;
378 break;
379 case 5:
380 *std &= V4L2_STD_SECAM;
381 break;
382 case 6:
383 *std &= V4L2_STD_PAL_Nc;
384 break;
385 case 7:
386 *std &= V4L2_STD_SECAM;
387 break;
388 default:
389 *std = V4L2_STD_UNKNOWN;
390 break;
391 }
392
393 /* after std detection, write back user set std */
394 adv7183_s_std(sd, decoder->std);
395 return 0;
396 }
397
adv7183_g_input_status(struct v4l2_subdev * sd,u32 * status)398 static int adv7183_g_input_status(struct v4l2_subdev *sd, u32 *status)
399 {
400 int reg;
401
402 *status = V4L2_IN_ST_NO_SIGNAL;
403 reg = adv7183_read(sd, ADV7183_STATUS_1);
404 if (reg < 0)
405 return reg;
406 if (reg & 0x1)
407 *status = 0;
408 return 0;
409 }
410
adv7183_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)411 static int adv7183_enum_mbus_code(struct v4l2_subdev *sd,
412 struct v4l2_subdev_state *sd_state,
413 struct v4l2_subdev_mbus_code_enum *code)
414 {
415 if (code->pad || code->index > 0)
416 return -EINVAL;
417
418 code->code = MEDIA_BUS_FMT_UYVY8_2X8;
419 return 0;
420 }
421
adv7183_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * format)422 static int adv7183_set_fmt(struct v4l2_subdev *sd,
423 struct v4l2_subdev_state *sd_state,
424 struct v4l2_subdev_format *format)
425 {
426 struct adv7183 *decoder = to_adv7183(sd);
427 struct v4l2_mbus_framefmt *fmt = &format->format;
428
429 if (format->pad)
430 return -EINVAL;
431
432 fmt->code = MEDIA_BUS_FMT_UYVY8_2X8;
433 fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
434 if (decoder->std & V4L2_STD_525_60) {
435 fmt->field = V4L2_FIELD_SEQ_TB;
436 fmt->width = 720;
437 fmt->height = 480;
438 } else {
439 fmt->field = V4L2_FIELD_SEQ_BT;
440 fmt->width = 720;
441 fmt->height = 576;
442 }
443 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
444 decoder->fmt = *fmt;
445 return 0;
446 }
447
adv7183_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * format)448 static int adv7183_get_fmt(struct v4l2_subdev *sd,
449 struct v4l2_subdev_state *sd_state,
450 struct v4l2_subdev_format *format)
451 {
452 struct adv7183 *decoder = to_adv7183(sd);
453
454 if (format->pad)
455 return -EINVAL;
456
457 format->format = decoder->fmt;
458 return 0;
459 }
460
adv7183_s_stream(struct v4l2_subdev * sd,int enable)461 static int adv7183_s_stream(struct v4l2_subdev *sd, int enable)
462 {
463 struct adv7183 *decoder = to_adv7183(sd);
464
465 if (enable)
466 gpiod_set_value(decoder->oe_pin, 1);
467 else
468 gpiod_set_value(decoder->oe_pin, 0);
469 udelay(1);
470 return 0;
471 }
472
473 #ifdef CONFIG_VIDEO_ADV_DEBUG
adv7183_g_register(struct v4l2_subdev * sd,struct v4l2_dbg_register * reg)474 static int adv7183_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
475 {
476 reg->val = adv7183_read(sd, reg->reg & 0xff);
477 reg->size = 1;
478 return 0;
479 }
480
adv7183_s_register(struct v4l2_subdev * sd,const struct v4l2_dbg_register * reg)481 static int adv7183_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
482 {
483 adv7183_write(sd, reg->reg & 0xff, reg->val & 0xff);
484 return 0;
485 }
486 #endif
487
488 static const struct v4l2_ctrl_ops adv7183_ctrl_ops = {
489 .s_ctrl = adv7183_s_ctrl,
490 };
491
492 static const struct v4l2_subdev_core_ops adv7183_core_ops = {
493 .log_status = adv7183_log_status,
494 .reset = adv7183_reset,
495 #ifdef CONFIG_VIDEO_ADV_DEBUG
496 .g_register = adv7183_g_register,
497 .s_register = adv7183_s_register,
498 #endif
499 };
500
501 static const struct v4l2_subdev_video_ops adv7183_video_ops = {
502 .g_std = adv7183_g_std,
503 .s_std = adv7183_s_std,
504 .s_routing = adv7183_s_routing,
505 .querystd = adv7183_querystd,
506 .g_input_status = adv7183_g_input_status,
507 .s_stream = adv7183_s_stream,
508 };
509
510 static const struct v4l2_subdev_pad_ops adv7183_pad_ops = {
511 .enum_mbus_code = adv7183_enum_mbus_code,
512 .get_fmt = adv7183_get_fmt,
513 .set_fmt = adv7183_set_fmt,
514 };
515
516 static const struct v4l2_subdev_ops adv7183_ops = {
517 .core = &adv7183_core_ops,
518 .video = &adv7183_video_ops,
519 .pad = &adv7183_pad_ops,
520 };
521
adv7183_probe(struct i2c_client * client)522 static int adv7183_probe(struct i2c_client *client)
523 {
524 struct adv7183 *decoder;
525 struct v4l2_subdev *sd;
526 struct v4l2_ctrl_handler *hdl;
527 int ret;
528 struct v4l2_subdev_format fmt = {
529 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
530 };
531
532 /* Check if the adapter supports the needed features */
533 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
534 return -EIO;
535
536 v4l_info(client, "chip found @ 0x%02x (%s)\n",
537 client->addr << 1, client->adapter->name);
538
539 decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
540 if (decoder == NULL)
541 return -ENOMEM;
542
543 /*
544 * Requesting high will assert reset, the line should be
545 * flagged as active low in descriptor table or machine description.
546 */
547 decoder->reset_pin = devm_gpiod_get(&client->dev, "reset",
548 GPIOD_OUT_HIGH);
549 if (IS_ERR(decoder->reset_pin))
550 return PTR_ERR(decoder->reset_pin);
551 gpiod_set_consumer_name(decoder->reset_pin, "ADV7183 Reset");
552 /*
553 * Requesting low will start with output disabled, the line should be
554 * flagged as active low in descriptor table or machine description.
555 */
556 decoder->oe_pin = devm_gpiod_get(&client->dev, "oe",
557 GPIOD_OUT_LOW);
558 if (IS_ERR(decoder->oe_pin))
559 return PTR_ERR(decoder->oe_pin);
560 gpiod_set_consumer_name(decoder->reset_pin, "ADV7183 Output Enable");
561
562 sd = &decoder->sd;
563 v4l2_i2c_subdev_init(sd, client, &adv7183_ops);
564
565 hdl = &decoder->hdl;
566 v4l2_ctrl_handler_init(hdl, 4);
567 v4l2_ctrl_new_std(hdl, &adv7183_ctrl_ops,
568 V4L2_CID_BRIGHTNESS, -128, 127, 1, 0);
569 v4l2_ctrl_new_std(hdl, &adv7183_ctrl_ops,
570 V4L2_CID_CONTRAST, 0, 0xFF, 1, 0x80);
571 v4l2_ctrl_new_std(hdl, &adv7183_ctrl_ops,
572 V4L2_CID_SATURATION, 0, 0xFFFF, 1, 0x8080);
573 v4l2_ctrl_new_std(hdl, &adv7183_ctrl_ops,
574 V4L2_CID_HUE, 0, 0xFFFF, 1, 0x8080);
575 /* hook the control handler into the driver */
576 sd->ctrl_handler = hdl;
577 if (hdl->error) {
578 ret = hdl->error;
579
580 v4l2_ctrl_handler_free(hdl);
581 return ret;
582 }
583
584 /* v4l2 doesn't support an autodetect standard, pick PAL as default */
585 decoder->std = V4L2_STD_PAL;
586 decoder->input = ADV7183_COMPOSITE4;
587 decoder->output = ADV7183_8BIT_OUT;
588
589 /* reset chip */
590 /* reset pulse width at least 5ms */
591 mdelay(10);
592 /* De-assert reset line (descriptor tagged active low) */
593 gpiod_set_value(decoder->reset_pin, 0);
594 /* wait 5ms before any further i2c writes are performed */
595 mdelay(5);
596
597 adv7183_writeregs(sd, adv7183_init_regs, ARRAY_SIZE(adv7183_init_regs));
598 adv7183_s_std(sd, decoder->std);
599 fmt.format.width = 720;
600 fmt.format.height = 576;
601 adv7183_set_fmt(sd, NULL, &fmt);
602
603 /* initialize the hardware to the default control values */
604 ret = v4l2_ctrl_handler_setup(hdl);
605 if (ret) {
606 v4l2_ctrl_handler_free(hdl);
607 return ret;
608 }
609
610 return 0;
611 }
612
adv7183_remove(struct i2c_client * client)613 static void adv7183_remove(struct i2c_client *client)
614 {
615 struct v4l2_subdev *sd = i2c_get_clientdata(client);
616
617 v4l2_device_unregister_subdev(sd);
618 v4l2_ctrl_handler_free(sd->ctrl_handler);
619 }
620
621 static const struct i2c_device_id adv7183_id[] = {
622 { "adv7183" },
623 {}
624 };
625
626 MODULE_DEVICE_TABLE(i2c, adv7183_id);
627
628 static struct i2c_driver adv7183_driver = {
629 .driver = {
630 .name = "adv7183",
631 },
632 .probe = adv7183_probe,
633 .remove = adv7183_remove,
634 .id_table = adv7183_id,
635 };
636
637 module_i2c_driver(adv7183_driver);
638
639 MODULE_DESCRIPTION("Analog Devices ADV7183 video decoder driver");
640 MODULE_AUTHOR("Scott Jiang <Scott.Jiang.Linux@gmail.com>");
641 MODULE_LICENSE("GPL v2");
642