1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * OKI Semiconductor ML86V7667 video decoder driver
5 * Author: Vladimir Barinov <source@cogentembedded.com>
6 * Copyright (C) 2013 Cogent Embedded, Inc.
7 * Copyright (C) 2013 Renesas Solutions Corp.
10 #include <linux/init.h>
11 #include <linux/module.h>
12 #include <linux/i2c.h>
13 #include <linux/slab.h>
14 #include <linux/videodev2.h>
15 #include <media/v4l2-subdev.h>
16 #include <media/v4l2-device.h>
17 #include <media/v4l2-ioctl.h>
18 #include <media/v4l2-ctrls.h>
20 #define DRV_NAME "ml86v7667"
23 #define MRA_REG 0x00 /* Mode Register A */
24 #define MRC_REG 0x02 /* Mode Register C */
25 #define LUMC_REG 0x0C /* Luminance Control */
26 #define CLC_REG 0x10 /* Contrast level control */
27 #define SSEPL_REG 0x11 /* Sync separation level */
28 #define CHRCA_REG 0x12 /* Chrominance Control A */
29 #define ACCC_REG 0x14 /* ACC Loop filter & Chrominance control */
30 #define ACCRC_REG 0x15 /* ACC Reference level control */
31 #define HUE_REG 0x16 /* Hue control */
32 #define ADC2_REG 0x1F /* ADC Register 2 */
33 #define PLLR1_REG 0x20 /* PLL Register 1 */
34 #define STATUS_REG 0x2C /* STATUS Register */
36 /* Mode Register A register bits */
37 #define MRA_OUTPUT_MODE_MASK (3 << 6)
38 #define MRA_ITUR_BT601 (1 << 6)
39 #define MRA_ITUR_BT656 (0 << 6)
40 #define MRA_INPUT_MODE_MASK (7 << 3)
41 #define MRA_PAL_BT601 (4 << 3)
42 #define MRA_NTSC_BT601 (0 << 3)
43 #define MRA_REGISTER_MODE (1 << 0)
45 /* Mode Register C register bits */
46 #define MRC_AUTOSELECT (1 << 7)
48 /* Luminance Control register bits */
49 #define LUMC_ONOFF_SHIFT 7
50 #define LUMC_ONOFF_MASK (1 << 7)
52 /* Contrast level control register bits */
53 #define CLC_CONTRAST_ONOFF (1 << 7)
54 #define CLC_CONTRAST_MASK 0x0F
56 /* Sync separation level register bits */
57 #define SSEPL_LUMINANCE_ONOFF (1 << 7)
58 #define SSEPL_LUMINANCE_MASK 0x7F
60 /* Chrominance Control A register bits */
61 #define CHRCA_MODE_SHIFT 6
62 #define CHRCA_MODE_MASK (1 << 6)
64 /* ACC Loop filter & Chrominance control register bits */
65 #define ACCC_CHROMA_CR_SHIFT 3
66 #define ACCC_CHROMA_CR_MASK (7 << 3)
67 #define ACCC_CHROMA_CB_SHIFT 0
68 #define ACCC_CHROMA_CB_MASK (7 << 0)
70 /* ACC Reference level control register bits */
71 #define ACCRC_CHROMA_MASK 0xfc
72 #define ACCRC_CHROMA_SHIFT 2
74 /* ADC Register 2 register bits */
75 #define ADC2_CLAMP_VOLTAGE_MASK (7 << 1)
76 #define ADC2_CLAMP_VOLTAGE(n) ((n & 7) << 1)
78 /* PLL Register 1 register bits */
79 #define PLLR1_FIXED_CLOCK (1 << 7)
81 /* STATUS Register register bits */
82 #define STATUS_HLOCK_DETECT (1 << 3)
83 #define STATUS_NTSCPAL (1 << 2)
85 struct ml86v7667_priv {
86 struct v4l2_subdev sd;
87 struct v4l2_ctrl_handler hdl;
91 static inline struct ml86v7667_priv *to_ml86v7667(struct v4l2_subdev *subdev)
93 return container_of(subdev, struct ml86v7667_priv, sd);
96 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
98 return &container_of(ctrl->handler, struct ml86v7667_priv, hdl)->sd;
101 static int ml86v7667_mask_set(struct i2c_client *client, const u8 reg,
102 const u8 mask, const u8 data)
104 int val = i2c_smbus_read_byte_data(client, reg);
108 val = (val & ~mask) | (data & mask);
109 return i2c_smbus_write_byte_data(client, reg, val);
112 static int ml86v7667_s_ctrl(struct v4l2_ctrl *ctrl)
114 struct v4l2_subdev *sd = to_sd(ctrl);
115 struct i2c_client *client = v4l2_get_subdevdata(sd);
119 case V4L2_CID_BRIGHTNESS:
120 ret = ml86v7667_mask_set(client, SSEPL_REG,
121 SSEPL_LUMINANCE_MASK, ctrl->val);
123 case V4L2_CID_CONTRAST:
124 ret = ml86v7667_mask_set(client, CLC_REG,
125 CLC_CONTRAST_MASK, ctrl->val);
127 case V4L2_CID_CHROMA_GAIN:
128 ret = ml86v7667_mask_set(client, ACCRC_REG, ACCRC_CHROMA_MASK,
129 ctrl->val << ACCRC_CHROMA_SHIFT);
132 ret = ml86v7667_mask_set(client, HUE_REG, ~0, ctrl->val);
134 case V4L2_CID_RED_BALANCE:
135 ret = ml86v7667_mask_set(client, ACCC_REG,
137 ctrl->val << ACCC_CHROMA_CR_SHIFT);
139 case V4L2_CID_BLUE_BALANCE:
140 ret = ml86v7667_mask_set(client, ACCC_REG,
142 ctrl->val << ACCC_CHROMA_CB_SHIFT);
144 case V4L2_CID_SHARPNESS:
145 ret = ml86v7667_mask_set(client, LUMC_REG,
147 ctrl->val << LUMC_ONOFF_SHIFT);
149 case V4L2_CID_COLOR_KILLER:
150 ret = ml86v7667_mask_set(client, CHRCA_REG,
152 ctrl->val << CHRCA_MODE_SHIFT);
159 static int ml86v7667_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
161 struct i2c_client *client = v4l2_get_subdevdata(sd);
164 status = i2c_smbus_read_byte_data(client, STATUS_REG);
168 if (status & STATUS_HLOCK_DETECT)
169 *std &= status & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60;
171 *std = V4L2_STD_UNKNOWN;
176 static int ml86v7667_g_input_status(struct v4l2_subdev *sd, u32 *status)
178 struct i2c_client *client = v4l2_get_subdevdata(sd);
181 status_reg = i2c_smbus_read_byte_data(client, STATUS_REG);
185 *status = status_reg & STATUS_HLOCK_DETECT ? 0 : V4L2_IN_ST_NO_SIGNAL;
190 static int ml86v7667_enum_mbus_code(struct v4l2_subdev *sd,
191 struct v4l2_subdev_state *sd_state,
192 struct v4l2_subdev_mbus_code_enum *code)
194 if (code->pad || code->index > 0)
197 code->code = MEDIA_BUS_FMT_YUYV8_2X8;
202 static int ml86v7667_fill_fmt(struct v4l2_subdev *sd,
203 struct v4l2_subdev_state *sd_state,
204 struct v4l2_subdev_format *format)
206 struct ml86v7667_priv *priv = to_ml86v7667(sd);
207 struct v4l2_mbus_framefmt *fmt = &format->format;
212 fmt->code = MEDIA_BUS_FMT_YUYV8_2X8;
213 fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
214 /* The top field is always transferred first by the chip */
215 fmt->field = V4L2_FIELD_INTERLACED_TB;
217 fmt->height = priv->std & V4L2_STD_525_60 ? 480 : 576;
222 static int ml86v7667_get_mbus_config(struct v4l2_subdev *sd,
224 struct v4l2_mbus_config *cfg)
226 cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
227 V4L2_MBUS_DATA_ACTIVE_HIGH;
228 cfg->type = V4L2_MBUS_BT656;
233 static int ml86v7667_g_std(struct v4l2_subdev *sd, v4l2_std_id *std)
235 struct ml86v7667_priv *priv = to_ml86v7667(sd);
242 static int ml86v7667_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
244 struct ml86v7667_priv *priv = to_ml86v7667(sd);
245 struct i2c_client *client = v4l2_get_subdevdata(&priv->sd);
249 /* PAL/NTSC ITU-R BT.601 input mode */
250 mode = std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601;
251 ret = ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, mode);
260 #ifdef CONFIG_VIDEO_ADV_DEBUG
261 static int ml86v7667_g_register(struct v4l2_subdev *sd,
262 struct v4l2_dbg_register *reg)
264 struct i2c_client *client = v4l2_get_subdevdata(sd);
267 ret = i2c_smbus_read_byte_data(client, (u8)reg->reg);
272 reg->size = sizeof(u8);
277 static int ml86v7667_s_register(struct v4l2_subdev *sd,
278 const struct v4l2_dbg_register *reg)
280 struct i2c_client *client = v4l2_get_subdevdata(sd);
282 return i2c_smbus_write_byte_data(client, (u8)reg->reg, (u8)reg->val);
286 static const struct v4l2_ctrl_ops ml86v7667_ctrl_ops = {
287 .s_ctrl = ml86v7667_s_ctrl,
290 static const struct v4l2_subdev_video_ops ml86v7667_subdev_video_ops = {
291 .g_std = ml86v7667_g_std,
292 .s_std = ml86v7667_s_std,
293 .querystd = ml86v7667_querystd,
294 .g_input_status = ml86v7667_g_input_status,
297 static const struct v4l2_subdev_pad_ops ml86v7667_subdev_pad_ops = {
298 .enum_mbus_code = ml86v7667_enum_mbus_code,
299 .get_fmt = ml86v7667_fill_fmt,
300 .set_fmt = ml86v7667_fill_fmt,
301 .get_mbus_config = ml86v7667_get_mbus_config,
304 static const struct v4l2_subdev_core_ops ml86v7667_subdev_core_ops = {
305 #ifdef CONFIG_VIDEO_ADV_DEBUG
306 .g_register = ml86v7667_g_register,
307 .s_register = ml86v7667_s_register,
311 static const struct v4l2_subdev_ops ml86v7667_subdev_ops = {
312 .core = &ml86v7667_subdev_core_ops,
313 .video = &ml86v7667_subdev_video_ops,
314 .pad = &ml86v7667_subdev_pad_ops,
317 static int ml86v7667_init(struct ml86v7667_priv *priv)
319 struct i2c_client *client = v4l2_get_subdevdata(&priv->sd);
323 /* BT.656-4 output mode, register mode */
324 ret = ml86v7667_mask_set(client, MRA_REG,
325 MRA_OUTPUT_MODE_MASK | MRA_REGISTER_MODE,
326 MRA_ITUR_BT656 | MRA_REGISTER_MODE);
328 /* PLL circuit fixed clock, 32MHz */
329 ret |= ml86v7667_mask_set(client, PLLR1_REG, PLLR1_FIXED_CLOCK,
332 /* ADC2 clamping voltage maximum */
333 ret |= ml86v7667_mask_set(client, ADC2_REG, ADC2_CLAMP_VOLTAGE_MASK,
334 ADC2_CLAMP_VOLTAGE(7));
336 /* enable luminance function */
337 ret |= ml86v7667_mask_set(client, SSEPL_REG, SSEPL_LUMINANCE_ONOFF,
338 SSEPL_LUMINANCE_ONOFF);
340 /* enable contrast function */
341 ret |= ml86v7667_mask_set(client, CLC_REG, CLC_CONTRAST_ONOFF, 0);
344 * PAL/NTSC autodetection is enabled after reset,
345 * set the autodetected std in manual std mode and
346 * disable autodetection
348 val = i2c_smbus_read_byte_data(client, STATUS_REG);
352 priv->std = val & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60;
353 ret |= ml86v7667_mask_set(client, MRC_REG, MRC_AUTOSELECT, 0);
355 val = priv->std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601;
356 ret |= ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, val);
361 static int ml86v7667_probe(struct i2c_client *client,
362 const struct i2c_device_id *did)
364 struct ml86v7667_priv *priv;
367 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
370 priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
374 v4l2_i2c_subdev_init(&priv->sd, client, &ml86v7667_subdev_ops);
376 v4l2_ctrl_handler_init(&priv->hdl, 8);
377 v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
378 V4L2_CID_BRIGHTNESS, -64, 63, 1, 0);
379 v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
380 V4L2_CID_CONTRAST, -8, 7, 1, 0);
381 v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
382 V4L2_CID_CHROMA_GAIN, -32, 31, 1, 0);
383 v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
384 V4L2_CID_HUE, -128, 127, 1, 0);
385 v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
386 V4L2_CID_RED_BALANCE, -4, 3, 1, 0);
387 v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
388 V4L2_CID_BLUE_BALANCE, -4, 3, 1, 0);
389 v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
390 V4L2_CID_SHARPNESS, 0, 1, 1, 0);
391 v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
392 V4L2_CID_COLOR_KILLER, 0, 1, 1, 0);
393 priv->sd.ctrl_handler = &priv->hdl;
395 ret = priv->hdl.error;
399 v4l2_ctrl_handler_setup(&priv->hdl);
401 ret = ml86v7667_init(priv);
405 v4l_info(client, "chip found @ 0x%02x (%s)\n",
406 client->addr, client->adapter->name);
410 v4l2_ctrl_handler_free(&priv->hdl);
411 v4l2_device_unregister_subdev(&priv->sd);
412 v4l_err(client, "failed to probe @ 0x%02x (%s)\n",
413 client->addr, client->adapter->name);
417 static int ml86v7667_remove(struct i2c_client *client)
419 struct v4l2_subdev *sd = i2c_get_clientdata(client);
420 struct ml86v7667_priv *priv = to_ml86v7667(sd);
422 v4l2_ctrl_handler_free(&priv->hdl);
423 v4l2_device_unregister_subdev(&priv->sd);
428 static const struct i2c_device_id ml86v7667_id[] = {
432 MODULE_DEVICE_TABLE(i2c, ml86v7667_id);
434 static struct i2c_driver ml86v7667_i2c_driver = {
438 .probe = ml86v7667_probe,
439 .remove = ml86v7667_remove,
440 .id_table = ml86v7667_id,
443 module_i2c_driver(ml86v7667_i2c_driver);
445 MODULE_DESCRIPTION("OKI Semiconductor ML86V7667 video decoder driver");
446 MODULE_AUTHOR("Vladimir Barinov");
447 MODULE_LICENSE("GPL");