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ed3e12d2 VB |
1 | /* |
2 | * OKI Semiconductor ML86V7667 video decoder driver | |
3 | * | |
4 | * Author: Vladimir Barinov <source@cogentembedded.com> | |
5 | * Copyright (C) 2013 Cogent Embedded, Inc. | |
6 | * Copyright (C) 2013 Renesas Solutions Corp. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | */ | |
13 | ||
14 | #include <linux/init.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/i2c.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/videodev2.h> | |
19 | #include <media/v4l2-subdev.h> | |
20 | #include <media/v4l2-device.h> | |
21 | #include <media/v4l2-ioctl.h> | |
22 | #include <media/v4l2-ctrls.h> | |
23 | ||
24 | #define DRV_NAME "ml86v7667" | |
25 | ||
26 | /* Subaddresses */ | |
27 | #define MRA_REG 0x00 /* Mode Register A */ | |
28 | #define MRC_REG 0x02 /* Mode Register C */ | |
29 | #define LUMC_REG 0x0C /* Luminance Control */ | |
30 | #define CLC_REG 0x10 /* Contrast level control */ | |
31 | #define SSEPL_REG 0x11 /* Sync separation level */ | |
32 | #define CHRCA_REG 0x12 /* Chrominance Control A */ | |
33 | #define ACCC_REG 0x14 /* ACC Loop filter & Chrominance control */ | |
34 | #define ACCRC_REG 0x15 /* ACC Reference level control */ | |
35 | #define HUE_REG 0x16 /* Hue control */ | |
36 | #define ADC2_REG 0x1F /* ADC Register 2 */ | |
37 | #define PLLR1_REG 0x20 /* PLL Register 1 */ | |
38 | #define STATUS_REG 0x2C /* STATUS Register */ | |
39 | ||
40 | /* Mode Register A register bits */ | |
41 | #define MRA_OUTPUT_MODE_MASK (3 << 6) | |
42 | #define MRA_ITUR_BT601 (1 << 6) | |
43 | #define MRA_ITUR_BT656 (0 << 6) | |
44 | #define MRA_INPUT_MODE_MASK (7 << 3) | |
45 | #define MRA_PAL_BT601 (4 << 3) | |
46 | #define MRA_NTSC_BT601 (0 << 3) | |
47 | #define MRA_REGISTER_MODE (1 << 0) | |
48 | ||
49 | /* Mode Register C register bits */ | |
50 | #define MRC_AUTOSELECT (1 << 7) | |
51 | ||
52 | /* Luminance Control register bits */ | |
53 | #define LUMC_ONOFF_SHIFT 7 | |
54 | #define LUMC_ONOFF_MASK (1 << 7) | |
55 | ||
56 | /* Contrast level control register bits */ | |
57 | #define CLC_CONTRAST_ONOFF (1 << 7) | |
58 | #define CLC_CONTRAST_MASK 0x0F | |
59 | ||
60 | /* Sync separation level register bits */ | |
61 | #define SSEPL_LUMINANCE_ONOFF (1 << 7) | |
62 | #define SSEPL_LUMINANCE_MASK 0x7F | |
63 | ||
64 | /* Chrominance Control A register bits */ | |
65 | #define CHRCA_MODE_SHIFT 6 | |
66 | #define CHRCA_MODE_MASK (1 << 6) | |
67 | ||
68 | /* ACC Loop filter & Chrominance control register bits */ | |
69 | #define ACCC_CHROMA_CR_SHIFT 3 | |
70 | #define ACCC_CHROMA_CR_MASK (7 << 3) | |
71 | #define ACCC_CHROMA_CB_SHIFT 0 | |
72 | #define ACCC_CHROMA_CB_MASK (7 << 0) | |
73 | ||
74 | /* ACC Reference level control register bits */ | |
75 | #define ACCRC_CHROMA_MASK 0xfc | |
76 | #define ACCRC_CHROMA_SHIFT 2 | |
77 | ||
78 | /* ADC Register 2 register bits */ | |
79 | #define ADC2_CLAMP_VOLTAGE_MASK (7 << 1) | |
80 | #define ADC2_CLAMP_VOLTAGE(n) ((n & 7) << 1) | |
81 | ||
82 | /* PLL Register 1 register bits */ | |
83 | #define PLLR1_FIXED_CLOCK (1 << 7) | |
84 | ||
85 | /* STATUS Register register bits */ | |
86 | #define STATUS_HLOCK_DETECT (1 << 3) | |
87 | #define STATUS_NTSCPAL (1 << 2) | |
88 | ||
89 | struct ml86v7667_priv { | |
90 | struct v4l2_subdev sd; | |
91 | struct v4l2_ctrl_handler hdl; | |
92 | v4l2_std_id std; | |
93 | }; | |
94 | ||
95 | static inline struct ml86v7667_priv *to_ml86v7667(struct v4l2_subdev *subdev) | |
96 | { | |
97 | return container_of(subdev, struct ml86v7667_priv, sd); | |
98 | } | |
99 | ||
100 | static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) | |
101 | { | |
102 | return &container_of(ctrl->handler, struct ml86v7667_priv, hdl)->sd; | |
103 | } | |
104 | ||
105 | static int ml86v7667_mask_set(struct i2c_client *client, const u8 reg, | |
106 | const u8 mask, const u8 data) | |
107 | { | |
108 | int val = i2c_smbus_read_byte_data(client, reg); | |
109 | if (val < 0) | |
110 | return val; | |
111 | ||
112 | val = (val & ~mask) | (data & mask); | |
113 | return i2c_smbus_write_byte_data(client, reg, val); | |
114 | } | |
115 | ||
116 | static int ml86v7667_s_ctrl(struct v4l2_ctrl *ctrl) | |
117 | { | |
118 | struct v4l2_subdev *sd = to_sd(ctrl); | |
119 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
2641ff99 | 120 | int ret; |
ed3e12d2 VB |
121 | |
122 | switch (ctrl->id) { | |
123 | case V4L2_CID_BRIGHTNESS: | |
124 | ret = ml86v7667_mask_set(client, SSEPL_REG, | |
125 | SSEPL_LUMINANCE_MASK, ctrl->val); | |
126 | break; | |
127 | case V4L2_CID_CONTRAST: | |
128 | ret = ml86v7667_mask_set(client, CLC_REG, | |
129 | CLC_CONTRAST_MASK, ctrl->val); | |
130 | break; | |
131 | case V4L2_CID_CHROMA_GAIN: | |
132 | ret = ml86v7667_mask_set(client, ACCRC_REG, ACCRC_CHROMA_MASK, | |
133 | ctrl->val << ACCRC_CHROMA_SHIFT); | |
134 | break; | |
135 | case V4L2_CID_HUE: | |
136 | ret = ml86v7667_mask_set(client, HUE_REG, ~0, ctrl->val); | |
137 | break; | |
138 | case V4L2_CID_RED_BALANCE: | |
139 | ret = ml86v7667_mask_set(client, ACCC_REG, | |
140 | ACCC_CHROMA_CR_MASK, | |
141 | ctrl->val << ACCC_CHROMA_CR_SHIFT); | |
142 | break; | |
143 | case V4L2_CID_BLUE_BALANCE: | |
144 | ret = ml86v7667_mask_set(client, ACCC_REG, | |
145 | ACCC_CHROMA_CB_MASK, | |
146 | ctrl->val << ACCC_CHROMA_CB_SHIFT); | |
147 | break; | |
148 | case V4L2_CID_SHARPNESS: | |
149 | ret = ml86v7667_mask_set(client, LUMC_REG, | |
150 | LUMC_ONOFF_MASK, | |
151 | ctrl->val << LUMC_ONOFF_SHIFT); | |
152 | break; | |
153 | case V4L2_CID_COLOR_KILLER: | |
154 | ret = ml86v7667_mask_set(client, CHRCA_REG, | |
155 | CHRCA_MODE_MASK, | |
156 | ctrl->val << CHRCA_MODE_SHIFT); | |
157 | break; | |
158 | } | |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
163 | static int ml86v7667_querystd(struct v4l2_subdev *sd, v4l2_std_id *std) | |
164 | { | |
165 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
166 | int status; | |
167 | ||
168 | status = i2c_smbus_read_byte_data(client, STATUS_REG); | |
169 | if (status < 0) | |
170 | return status; | |
171 | ||
d13ac96f HV |
172 | if (status & STATUS_HLOCK_DETECT) |
173 | *std &= status & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60; | |
174 | else | |
175 | *std = V4L2_STD_UNKNOWN; | |
ed3e12d2 VB |
176 | |
177 | return 0; | |
178 | } | |
179 | ||
180 | static int ml86v7667_g_input_status(struct v4l2_subdev *sd, u32 *status) | |
181 | { | |
182 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
183 | int status_reg; | |
184 | ||
185 | status_reg = i2c_smbus_read_byte_data(client, STATUS_REG); | |
186 | if (status_reg < 0) | |
187 | return status_reg; | |
188 | ||
189 | *status = status_reg & STATUS_HLOCK_DETECT ? 0 : V4L2_IN_ST_NO_SIGNAL; | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
194 | static int ml86v7667_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index, | |
195 | enum v4l2_mbus_pixelcode *code) | |
196 | { | |
197 | if (index > 0) | |
198 | return -EINVAL; | |
199 | ||
200 | *code = V4L2_MBUS_FMT_YUYV8_2X8; | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
205 | static int ml86v7667_mbus_fmt(struct v4l2_subdev *sd, | |
206 | struct v4l2_mbus_framefmt *fmt) | |
207 | { | |
208 | struct ml86v7667_priv *priv = to_ml86v7667(sd); | |
209 | ||
210 | fmt->code = V4L2_MBUS_FMT_YUYV8_2X8; | |
211 | fmt->colorspace = V4L2_COLORSPACE_SMPTE170M; | |
212 | fmt->field = V4L2_FIELD_INTERLACED; | |
213 | fmt->width = 720; | |
214 | fmt->height = priv->std & V4L2_STD_525_60 ? 480 : 576; | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
219 | static int ml86v7667_g_mbus_config(struct v4l2_subdev *sd, | |
220 | struct v4l2_mbus_config *cfg) | |
221 | { | |
222 | cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING | | |
223 | V4L2_MBUS_DATA_ACTIVE_HIGH; | |
224 | cfg->type = V4L2_MBUS_BT656; | |
225 | ||
226 | return 0; | |
227 | } | |
228 | ||
229 | static int ml86v7667_s_std(struct v4l2_subdev *sd, v4l2_std_id std) | |
230 | { | |
231 | struct ml86v7667_priv *priv = to_ml86v7667(sd); | |
232 | struct i2c_client *client = v4l2_get_subdevdata(&priv->sd); | |
233 | int ret; | |
234 | u8 mode; | |
235 | ||
236 | /* PAL/NTSC ITU-R BT.601 input mode */ | |
237 | mode = std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601; | |
238 | ret = ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, mode); | |
239 | if (ret < 0) | |
240 | return ret; | |
241 | ||
242 | priv->std = std; | |
243 | ||
244 | return 0; | |
245 | } | |
246 | ||
247 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
248 | static int ml86v7667_g_register(struct v4l2_subdev *sd, | |
249 | struct v4l2_dbg_register *reg) | |
250 | { | |
251 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
252 | int ret; | |
253 | ||
254 | ret = i2c_smbus_read_byte_data(client, (u8)reg->reg); | |
255 | if (ret < 0) | |
256 | return ret; | |
257 | ||
258 | reg->val = ret; | |
259 | reg->size = sizeof(u8); | |
260 | ||
261 | return 0; | |
262 | } | |
263 | ||
264 | static int ml86v7667_s_register(struct v4l2_subdev *sd, | |
265 | const struct v4l2_dbg_register *reg) | |
266 | { | |
267 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
268 | ||
269 | return i2c_smbus_write_byte_data(client, (u8)reg->reg, (u8)reg->val); | |
270 | } | |
271 | #endif | |
272 | ||
273 | static const struct v4l2_ctrl_ops ml86v7667_ctrl_ops = { | |
274 | .s_ctrl = ml86v7667_s_ctrl, | |
275 | }; | |
276 | ||
277 | static struct v4l2_subdev_video_ops ml86v7667_subdev_video_ops = { | |
278 | .querystd = ml86v7667_querystd, | |
279 | .g_input_status = ml86v7667_g_input_status, | |
280 | .enum_mbus_fmt = ml86v7667_enum_mbus_fmt, | |
281 | .try_mbus_fmt = ml86v7667_mbus_fmt, | |
282 | .g_mbus_fmt = ml86v7667_mbus_fmt, | |
283 | .s_mbus_fmt = ml86v7667_mbus_fmt, | |
284 | .g_mbus_config = ml86v7667_g_mbus_config, | |
285 | }; | |
286 | ||
287 | static struct v4l2_subdev_core_ops ml86v7667_subdev_core_ops = { | |
288 | .s_std = ml86v7667_s_std, | |
289 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
290 | .g_register = ml86v7667_g_register, | |
291 | .s_register = ml86v7667_s_register, | |
292 | #endif | |
293 | }; | |
294 | ||
295 | static struct v4l2_subdev_ops ml86v7667_subdev_ops = { | |
296 | .core = &ml86v7667_subdev_core_ops, | |
297 | .video = &ml86v7667_subdev_video_ops, | |
298 | }; | |
299 | ||
300 | static int ml86v7667_init(struct ml86v7667_priv *priv) | |
301 | { | |
302 | struct i2c_client *client = v4l2_get_subdevdata(&priv->sd); | |
303 | int val; | |
304 | int ret; | |
305 | ||
306 | /* BT.656-4 output mode, register mode */ | |
307 | ret = ml86v7667_mask_set(client, MRA_REG, | |
308 | MRA_OUTPUT_MODE_MASK | MRA_REGISTER_MODE, | |
309 | MRA_ITUR_BT656 | MRA_REGISTER_MODE); | |
310 | ||
311 | /* PLL circuit fixed clock, 32MHz */ | |
312 | ret |= ml86v7667_mask_set(client, PLLR1_REG, PLLR1_FIXED_CLOCK, | |
313 | PLLR1_FIXED_CLOCK); | |
314 | ||
315 | /* ADC2 clamping voltage maximum */ | |
316 | ret |= ml86v7667_mask_set(client, ADC2_REG, ADC2_CLAMP_VOLTAGE_MASK, | |
317 | ADC2_CLAMP_VOLTAGE(7)); | |
318 | ||
319 | /* enable luminance function */ | |
320 | ret |= ml86v7667_mask_set(client, SSEPL_REG, SSEPL_LUMINANCE_ONOFF, | |
321 | SSEPL_LUMINANCE_ONOFF); | |
322 | ||
323 | /* enable contrast function */ | |
324 | ret |= ml86v7667_mask_set(client, CLC_REG, CLC_CONTRAST_ONOFF, 0); | |
325 | ||
326 | /* | |
327 | * PAL/NTSC autodetection is enabled after reset, | |
328 | * set the autodetected std in manual std mode and | |
329 | * disable autodetection | |
330 | */ | |
331 | val = i2c_smbus_read_byte_data(client, STATUS_REG); | |
332 | if (val < 0) | |
333 | return val; | |
334 | ||
335 | priv->std = val & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60; | |
336 | ret |= ml86v7667_mask_set(client, MRC_REG, MRC_AUTOSELECT, 0); | |
337 | ||
338 | val = priv->std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601; | |
339 | ret |= ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, val); | |
340 | ||
341 | return ret; | |
342 | } | |
343 | ||
344 | static int ml86v7667_probe(struct i2c_client *client, | |
345 | const struct i2c_device_id *did) | |
346 | { | |
347 | struct ml86v7667_priv *priv; | |
348 | int ret; | |
349 | ||
350 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
351 | return -EIO; | |
352 | ||
353 | priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL); | |
354 | if (!priv) | |
355 | return -ENOMEM; | |
356 | ||
357 | v4l2_i2c_subdev_init(&priv->sd, client, &ml86v7667_subdev_ops); | |
358 | ||
359 | v4l2_ctrl_handler_init(&priv->hdl, 8); | |
360 | v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops, | |
361 | V4L2_CID_BRIGHTNESS, -64, 63, 1, 0); | |
362 | v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops, | |
363 | V4L2_CID_CONTRAST, -8, 7, 1, 0); | |
364 | v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops, | |
365 | V4L2_CID_CHROMA_GAIN, -32, 31, 1, 0); | |
366 | v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops, | |
367 | V4L2_CID_HUE, -128, 127, 1, 0); | |
368 | v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops, | |
369 | V4L2_CID_RED_BALANCE, -4, 3, 1, 0); | |
370 | v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops, | |
371 | V4L2_CID_BLUE_BALANCE, -4, 3, 1, 0); | |
372 | v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops, | |
373 | V4L2_CID_SHARPNESS, 0, 1, 1, 0); | |
374 | v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops, | |
375 | V4L2_CID_COLOR_KILLER, 0, 1, 1, 0); | |
376 | priv->sd.ctrl_handler = &priv->hdl; | |
377 | ||
378 | ret = priv->hdl.error; | |
379 | if (ret) | |
380 | goto cleanup; | |
381 | ||
382 | v4l2_ctrl_handler_setup(&priv->hdl); | |
383 | ||
384 | ret = ml86v7667_init(priv); | |
385 | if (ret) | |
386 | goto cleanup; | |
387 | ||
388 | v4l_info(client, "chip found @ 0x%02x (%s)\n", | |
389 | client->addr, client->adapter->name); | |
390 | return 0; | |
391 | ||
392 | cleanup: | |
393 | v4l2_ctrl_handler_free(&priv->hdl); | |
394 | v4l2_device_unregister_subdev(&priv->sd); | |
395 | v4l_err(client, "failed to probe @ 0x%02x (%s)\n", | |
396 | client->addr, client->adapter->name); | |
397 | return ret; | |
398 | } | |
399 | ||
400 | static int ml86v7667_remove(struct i2c_client *client) | |
401 | { | |
402 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | |
403 | struct ml86v7667_priv *priv = to_ml86v7667(sd); | |
404 | ||
405 | v4l2_ctrl_handler_free(&priv->hdl); | |
406 | v4l2_device_unregister_subdev(&priv->sd); | |
407 | ||
408 | return 0; | |
409 | } | |
410 | ||
411 | static const struct i2c_device_id ml86v7667_id[] = { | |
412 | {DRV_NAME, 0}, | |
413 | {}, | |
414 | }; | |
415 | MODULE_DEVICE_TABLE(i2c, ml86v7667_id); | |
416 | ||
417 | static struct i2c_driver ml86v7667_i2c_driver = { | |
418 | .driver = { | |
419 | .name = DRV_NAME, | |
420 | .owner = THIS_MODULE, | |
421 | }, | |
422 | .probe = ml86v7667_probe, | |
423 | .remove = ml86v7667_remove, | |
424 | .id_table = ml86v7667_id, | |
425 | }; | |
426 | ||
427 | module_i2c_driver(ml86v7667_i2c_driver); | |
428 | ||
429 | MODULE_DESCRIPTION("OKI Semiconductor ML86V7667 video decoder driver"); | |
430 | MODULE_AUTHOR("Vladimir Barinov"); | |
431 | MODULE_LICENSE("GPL"); |