Commit | Line | Data |
---|---|---|
7397bfbe GL |
1 | /* |
2 | * Driver for MT9V022 CMOS Image Sensor from Micron | |
3 | * | |
4 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <linux/videodev2.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/i2c.h> | |
14 | #include <linux/delay.h> | |
15 | #include <linux/log2.h> | |
16 | ||
979ea1dd | 17 | #include <media/v4l2-subdev.h> |
7397bfbe GL |
18 | #include <media/v4l2-chip-ident.h> |
19 | #include <media/soc_camera.h> | |
20 | ||
7397bfbe | 21 | /* mt9v022 i2c address 0x48, 0x4c, 0x58, 0x5c |
979ea1dd GL |
22 | * The platform has to define ctruct i2c_board_info objects and link to them |
23 | * from struct soc_camera_link */ | |
7397bfbe GL |
24 | |
25 | static char *sensor_type; | |
26 | module_param(sensor_type, charp, S_IRUGO); | |
61a2d07d | 27 | MODULE_PARM_DESC(sensor_type, "Sensor type: \"colour\" or \"monochrome\""); |
7397bfbe GL |
28 | |
29 | /* mt9v022 selected register addresses */ | |
30 | #define MT9V022_CHIP_VERSION 0x00 | |
31 | #define MT9V022_COLUMN_START 0x01 | |
32 | #define MT9V022_ROW_START 0x02 | |
33 | #define MT9V022_WINDOW_HEIGHT 0x03 | |
34 | #define MT9V022_WINDOW_WIDTH 0x04 | |
35 | #define MT9V022_HORIZONTAL_BLANKING 0x05 | |
36 | #define MT9V022_VERTICAL_BLANKING 0x06 | |
37 | #define MT9V022_CHIP_CONTROL 0x07 | |
38 | #define MT9V022_SHUTTER_WIDTH1 0x08 | |
39 | #define MT9V022_SHUTTER_WIDTH2 0x09 | |
40 | #define MT9V022_SHUTTER_WIDTH_CTRL 0x0a | |
41 | #define MT9V022_TOTAL_SHUTTER_WIDTH 0x0b | |
42 | #define MT9V022_RESET 0x0c | |
43 | #define MT9V022_READ_MODE 0x0d | |
44 | #define MT9V022_MONITOR_MODE 0x0e | |
45 | #define MT9V022_PIXEL_OPERATION_MODE 0x0f | |
46 | #define MT9V022_LED_OUT_CONTROL 0x1b | |
47 | #define MT9V022_ADC_MODE_CONTROL 0x1c | |
48 | #define MT9V022_ANALOG_GAIN 0x34 | |
49 | #define MT9V022_BLACK_LEVEL_CALIB_CTRL 0x47 | |
50 | #define MT9V022_PIXCLK_FV_LV 0x74 | |
51 | #define MT9V022_DIGITAL_TEST_PATTERN 0x7f | |
52 | #define MT9V022_AEC_AGC_ENABLE 0xAF | |
53 | #define MT9V022_MAX_TOTAL_SHUTTER_WIDTH 0xBD | |
54 | ||
55 | /* Progressive scan, master, defaults */ | |
56 | #define MT9V022_CHIP_CONTROL_DEFAULT 0x188 | |
57 | ||
bb55de3b GL |
58 | static const struct soc_camera_data_format mt9v022_colour_formats[] = { |
59 | /* Order important: first natively supported, | |
60 | * second supported with a GPIO extender */ | |
7397bfbe | 61 | { |
bb55de3b | 62 | .name = "Bayer (sRGB) 10 bit", |
7397bfbe GL |
63 | .depth = 10, |
64 | .fourcc = V4L2_PIX_FMT_SBGGR16, | |
65 | .colorspace = V4L2_COLORSPACE_SRGB, | |
66 | }, { | |
bb55de3b GL |
67 | .name = "Bayer (sRGB) 8 bit", |
68 | .depth = 8, | |
69 | .fourcc = V4L2_PIX_FMT_SBGGR8, | |
70 | .colorspace = V4L2_COLORSPACE_SRGB, | |
71 | } | |
72 | }; | |
73 | ||
74 | static const struct soc_camera_data_format mt9v022_monochrome_formats[] = { | |
75 | /* Order important - see above */ | |
76 | { | |
7397bfbe GL |
77 | .name = "Monochrome 10 bit", |
78 | .depth = 10, | |
79 | .fourcc = V4L2_PIX_FMT_Y16, | |
80 | }, { | |
81 | .name = "Monochrome 8 bit", | |
82 | .depth = 8, | |
83 | .fourcc = V4L2_PIX_FMT_GREY, | |
84 | }, | |
85 | }; | |
86 | ||
87 | struct mt9v022 { | |
979ea1dd | 88 | struct v4l2_subdev subdev; |
7fb0fd05 | 89 | int model; /* V4L2_IDENT_MT9V022* codes from v4l2-chip-ident.h */ |
7397bfbe | 90 | u16 chip_control; |
7397bfbe GL |
91 | }; |
92 | ||
979ea1dd GL |
93 | static struct mt9v022 *to_mt9v022(const struct i2c_client *client) |
94 | { | |
95 | return container_of(i2c_get_clientdata(client), struct mt9v022, subdev); | |
96 | } | |
97 | ||
9538e1c2 | 98 | static int reg_read(struct i2c_client *client, const u8 reg) |
7397bfbe | 99 | { |
7397bfbe GL |
100 | s32 data = i2c_smbus_read_word_data(client, reg); |
101 | return data < 0 ? data : swab16(data); | |
102 | } | |
103 | ||
9538e1c2 | 104 | static int reg_write(struct i2c_client *client, const u8 reg, |
7397bfbe GL |
105 | const u16 data) |
106 | { | |
9538e1c2 | 107 | return i2c_smbus_write_word_data(client, reg, swab16(data)); |
7397bfbe GL |
108 | } |
109 | ||
9538e1c2 | 110 | static int reg_set(struct i2c_client *client, const u8 reg, |
7397bfbe GL |
111 | const u16 data) |
112 | { | |
113 | int ret; | |
114 | ||
9538e1c2 | 115 | ret = reg_read(client, reg); |
7397bfbe GL |
116 | if (ret < 0) |
117 | return ret; | |
9538e1c2 | 118 | return reg_write(client, reg, ret | data); |
7397bfbe GL |
119 | } |
120 | ||
9538e1c2 | 121 | static int reg_clear(struct i2c_client *client, const u8 reg, |
7397bfbe GL |
122 | const u16 data) |
123 | { | |
124 | int ret; | |
125 | ||
9538e1c2 | 126 | ret = reg_read(client, reg); |
7397bfbe GL |
127 | if (ret < 0) |
128 | return ret; | |
9538e1c2 | 129 | return reg_write(client, reg, ret & ~data); |
7397bfbe GL |
130 | } |
131 | ||
132 | static int mt9v022_init(struct soc_camera_device *icd) | |
133 | { | |
40e2e092 | 134 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); |
979ea1dd | 135 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
7397bfbe GL |
136 | int ret; |
137 | ||
138 | /* Almost the default mode: master, parallel, simultaneous, and an | |
139 | * undocumented bit 0x200, which is present in table 7, but not in 8, | |
140 | * plus snapshot mode to disable scan for now */ | |
141 | mt9v022->chip_control |= 0x10; | |
9538e1c2 | 142 | ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); |
11211641 | 143 | if (!ret) |
9538e1c2 | 144 | ret = reg_write(client, MT9V022_READ_MODE, 0x300); |
7397bfbe GL |
145 | |
146 | /* All defaults */ | |
11211641 | 147 | if (!ret) |
7397bfbe | 148 | /* AEC, AGC on */ |
9538e1c2 | 149 | ret = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x3); |
11211641 | 150 | if (!ret) |
9538e1c2 | 151 | ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480); |
11211641 | 152 | if (!ret) |
7397bfbe | 153 | /* default - auto */ |
9538e1c2 | 154 | ret = reg_clear(client, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1); |
11211641 | 155 | if (!ret) |
9538e1c2 | 156 | ret = reg_write(client, MT9V022_DIGITAL_TEST_PATTERN, 0); |
7397bfbe | 157 | |
11211641 | 158 | return ret; |
7397bfbe GL |
159 | } |
160 | ||
979ea1dd | 161 | static int mt9v022_s_stream(struct v4l2_subdev *sd, int enable) |
7397bfbe | 162 | { |
979ea1dd GL |
163 | struct i2c_client *client = sd->priv; |
164 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
81034663 | 165 | |
979ea1dd GL |
166 | if (enable) |
167 | /* Switch to master "normal" mode */ | |
168 | mt9v022->chip_control &= ~0x10; | |
169 | else | |
170 | /* Switch to snapshot mode */ | |
171 | mt9v022->chip_control |= 0x10; | |
7397bfbe | 172 | |
979ea1dd | 173 | if (reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control) < 0) |
7397bfbe GL |
174 | return -EIO; |
175 | return 0; | |
176 | } | |
177 | ||
ad5f2e85 GL |
178 | static int mt9v022_set_bus_param(struct soc_camera_device *icd, |
179 | unsigned long flags) | |
7397bfbe | 180 | { |
40e2e092 | 181 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); |
979ea1dd | 182 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
40e2e092 | 183 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
ad5f2e85 | 184 | unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK; |
7397bfbe | 185 | int ret; |
ad5f2e85 | 186 | u16 pixclk = 0; |
7397bfbe GL |
187 | |
188 | /* Only one width bit may be set */ | |
189 | if (!is_power_of_2(width_flag)) | |
190 | return -EINVAL; | |
191 | ||
e958e27a SH |
192 | if (icl->set_bus_param) { |
193 | ret = icl->set_bus_param(icl, width_flag); | |
194 | if (ret) | |
ad5f2e85 | 195 | return ret; |
e958e27a SH |
196 | } else { |
197 | /* | |
198 | * Without board specific bus width settings we only support the | |
199 | * sensors native bus width | |
200 | */ | |
201 | if (width_flag != SOCAM_DATAWIDTH_10) | |
202 | return -EINVAL; | |
ad5f2e85 GL |
203 | } |
204 | ||
bd73b36f GL |
205 | flags = soc_camera_apply_sensor_flags(icl, flags); |
206 | ||
ad5f2e85 GL |
207 | if (flags & SOCAM_PCLK_SAMPLE_RISING) |
208 | pixclk |= 0x10; | |
209 | ||
210 | if (!(flags & SOCAM_HSYNC_ACTIVE_HIGH)) | |
211 | pixclk |= 0x1; | |
212 | ||
213 | if (!(flags & SOCAM_VSYNC_ACTIVE_HIGH)) | |
214 | pixclk |= 0x2; | |
215 | ||
9538e1c2 | 216 | ret = reg_write(client, MT9V022_PIXCLK_FV_LV, pixclk); |
ad5f2e85 GL |
217 | if (ret < 0) |
218 | return ret; | |
219 | ||
220 | if (!(flags & SOCAM_MASTER)) | |
221 | mt9v022->chip_control &= ~0x8; | |
222 | ||
9538e1c2 | 223 | ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); |
ad5f2e85 GL |
224 | if (ret < 0) |
225 | return ret; | |
226 | ||
227 | dev_dbg(&icd->dev, "Calculated pixclk 0x%x, chip control 0x%x\n", | |
228 | pixclk, mt9v022->chip_control); | |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
233 | static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd) | |
234 | { | |
40e2e092 | 235 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
e958e27a | 236 | unsigned int width_flag; |
ad5f2e85 | 237 | |
e958e27a SH |
238 | if (icl->query_bus_param) |
239 | width_flag = icl->query_bus_param(icl) & | |
240 | SOCAM_DATAWIDTH_MASK; | |
241 | else | |
242 | width_flag = SOCAM_DATAWIDTH_10; | |
ad5f2e85 GL |
243 | |
244 | return SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING | | |
245 | SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW | | |
246 | SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW | | |
2d9329f3 | 247 | SOCAM_DATA_ACTIVE_HIGH | SOCAM_MASTER | SOCAM_SLAVE | |
ad5f2e85 GL |
248 | width_flag; |
249 | } | |
250 | ||
09e231b3 GL |
251 | static int mt9v022_set_crop(struct soc_camera_device *icd, |
252 | struct v4l2_rect *rect) | |
ad5f2e85 | 253 | { |
40e2e092 | 254 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); |
ad5f2e85 GL |
255 | int ret; |
256 | ||
7397bfbe | 257 | /* Like in example app. Contradicts the datasheet though */ |
9538e1c2 | 258 | ret = reg_read(client, MT9V022_AEC_AGC_ENABLE); |
7397bfbe GL |
259 | if (ret >= 0) { |
260 | if (ret & 1) /* Autoexposure */ | |
9538e1c2 | 261 | ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, |
7397bfbe GL |
262 | rect->height + icd->y_skip_top + 43); |
263 | else | |
9538e1c2 | 264 | ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, |
7397bfbe GL |
265 | rect->height + icd->y_skip_top + 43); |
266 | } | |
267 | /* Setup frame format: defaults apart from width and height */ | |
11211641 | 268 | if (!ret) |
9538e1c2 | 269 | ret = reg_write(client, MT9V022_COLUMN_START, rect->left); |
11211641 | 270 | if (!ret) |
9538e1c2 | 271 | ret = reg_write(client, MT9V022_ROW_START, rect->top); |
11211641 | 272 | if (!ret) |
7397bfbe GL |
273 | /* Default 94, Phytec driver says: |
274 | * "width + horizontal blank >= 660" */ | |
9538e1c2 | 275 | ret = reg_write(client, MT9V022_HORIZONTAL_BLANKING, |
7397bfbe GL |
276 | rect->width > 660 - 43 ? 43 : |
277 | 660 - rect->width); | |
11211641 | 278 | if (!ret) |
9538e1c2 | 279 | ret = reg_write(client, MT9V022_VERTICAL_BLANKING, 45); |
11211641 | 280 | if (!ret) |
9538e1c2 | 281 | ret = reg_write(client, MT9V022_WINDOW_WIDTH, rect->width); |
11211641 | 282 | if (!ret) |
9538e1c2 | 283 | ret = reg_write(client, MT9V022_WINDOW_HEIGHT, |
7397bfbe GL |
284 | rect->height + icd->y_skip_top); |
285 | ||
286 | if (ret < 0) | |
287 | return ret; | |
288 | ||
289 | dev_dbg(&icd->dev, "Frame %ux%u pixel\n", rect->width, rect->height); | |
290 | ||
7397bfbe GL |
291 | return 0; |
292 | } | |
293 | ||
979ea1dd | 294 | static int mt9v022_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) |
09e231b3 | 295 | { |
979ea1dd GL |
296 | struct i2c_client *client = sd->priv; |
297 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
298 | struct soc_camera_device *icd = client->dev.platform_data; | |
09e231b3 GL |
299 | struct v4l2_pix_format *pix = &f->fmt.pix; |
300 | struct v4l2_rect rect = { | |
a0705b07 GL |
301 | .left = icd->rect_current.left, |
302 | .top = icd->rect_current.top, | |
09e231b3 GL |
303 | .width = pix->width, |
304 | .height = pix->height, | |
305 | }; | |
306 | ||
307 | /* The caller provides a supported format, as verified per call to | |
308 | * icd->try_fmt(), datawidth is from our supported format list */ | |
309 | switch (pix->pixelformat) { | |
310 | case V4L2_PIX_FMT_GREY: | |
311 | case V4L2_PIX_FMT_Y16: | |
312 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM) | |
313 | return -EINVAL; | |
314 | break; | |
315 | case V4L2_PIX_FMT_SBGGR8: | |
316 | case V4L2_PIX_FMT_SBGGR16: | |
317 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC) | |
318 | return -EINVAL; | |
319 | break; | |
320 | case 0: | |
321 | /* No format change, only geometry */ | |
322 | break; | |
323 | default: | |
324 | return -EINVAL; | |
325 | } | |
326 | ||
327 | /* No support for scaling on this camera, just crop. */ | |
328 | return mt9v022_set_crop(icd, &rect); | |
329 | } | |
330 | ||
979ea1dd | 331 | static int mt9v022_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) |
7397bfbe | 332 | { |
979ea1dd GL |
333 | struct i2c_client *client = sd->priv; |
334 | struct soc_camera_device *icd = client->dev.platform_data; | |
64f5905e GL |
335 | struct v4l2_pix_format *pix = &f->fmt.pix; |
336 | ||
653dc59b TP |
337 | v4l_bound_align_image(&pix->width, 48, 752, 2 /* ? */, |
338 | &pix->height, 32 + icd->y_skip_top, | |
339 | 480 + icd->y_skip_top, 0, 0); | |
7397bfbe GL |
340 | |
341 | return 0; | |
342 | } | |
343 | ||
979ea1dd GL |
344 | static int mt9v022_g_chip_ident(struct v4l2_subdev *sd, |
345 | struct v4l2_dbg_chip_ident *id) | |
7397bfbe | 346 | { |
979ea1dd GL |
347 | struct i2c_client *client = sd->priv; |
348 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
7397bfbe | 349 | |
aecde8b5 | 350 | if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) |
7397bfbe GL |
351 | return -EINVAL; |
352 | ||
40e2e092 | 353 | if (id->match.addr != client->addr) |
7397bfbe GL |
354 | return -ENODEV; |
355 | ||
356 | id->ident = mt9v022->model; | |
357 | id->revision = 0; | |
358 | ||
359 | return 0; | |
360 | } | |
361 | ||
362 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
979ea1dd GL |
363 | static int mt9v022_g_register(struct v4l2_subdev *sd, |
364 | struct v4l2_dbg_register *reg) | |
7397bfbe | 365 | { |
979ea1dd | 366 | struct i2c_client *client = sd->priv; |
7397bfbe | 367 | |
aecde8b5 | 368 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
7397bfbe GL |
369 | return -EINVAL; |
370 | ||
9538e1c2 | 371 | if (reg->match.addr != client->addr) |
7397bfbe GL |
372 | return -ENODEV; |
373 | ||
aecde8b5 | 374 | reg->size = 2; |
9538e1c2 | 375 | reg->val = reg_read(client, reg->reg); |
7397bfbe GL |
376 | |
377 | if (reg->val > 0xffff) | |
378 | return -EIO; | |
379 | ||
380 | return 0; | |
381 | } | |
382 | ||
979ea1dd GL |
383 | static int mt9v022_s_register(struct v4l2_subdev *sd, |
384 | struct v4l2_dbg_register *reg) | |
7397bfbe | 385 | { |
979ea1dd | 386 | struct i2c_client *client = sd->priv; |
7397bfbe | 387 | |
aecde8b5 | 388 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
7397bfbe GL |
389 | return -EINVAL; |
390 | ||
9538e1c2 | 391 | if (reg->match.addr != client->addr) |
7397bfbe GL |
392 | return -ENODEV; |
393 | ||
9538e1c2 | 394 | if (reg_write(client, reg->reg, reg->val) < 0) |
7397bfbe GL |
395 | return -EIO; |
396 | ||
397 | return 0; | |
398 | } | |
399 | #endif | |
400 | ||
4407a463 | 401 | static const struct v4l2_queryctrl mt9v022_controls[] = { |
7397bfbe GL |
402 | { |
403 | .id = V4L2_CID_VFLIP, | |
404 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
405 | .name = "Flip Vertically", | |
406 | .minimum = 0, | |
407 | .maximum = 1, | |
408 | .step = 1, | |
409 | .default_value = 0, | |
410 | }, { | |
411 | .id = V4L2_CID_HFLIP, | |
412 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
413 | .name = "Flip Horizontally", | |
414 | .minimum = 0, | |
415 | .maximum = 1, | |
416 | .step = 1, | |
417 | .default_value = 0, | |
418 | }, { | |
419 | .id = V4L2_CID_GAIN, | |
420 | .type = V4L2_CTRL_TYPE_INTEGER, | |
421 | .name = "Analog Gain", | |
422 | .minimum = 64, | |
423 | .maximum = 127, | |
424 | .step = 1, | |
425 | .default_value = 64, | |
426 | .flags = V4L2_CTRL_FLAG_SLIDER, | |
427 | }, { | |
428 | .id = V4L2_CID_EXPOSURE, | |
429 | .type = V4L2_CTRL_TYPE_INTEGER, | |
430 | .name = "Exposure", | |
431 | .minimum = 1, | |
432 | .maximum = 255, | |
433 | .step = 1, | |
434 | .default_value = 255, | |
435 | .flags = V4L2_CTRL_FLAG_SLIDER, | |
436 | }, { | |
437 | .id = V4L2_CID_AUTOGAIN, | |
438 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
439 | .name = "Automatic Gain", | |
440 | .minimum = 0, | |
441 | .maximum = 1, | |
442 | .step = 1, | |
443 | .default_value = 1, | |
444 | }, { | |
445 | .id = V4L2_CID_EXPOSURE_AUTO, | |
446 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
447 | .name = "Automatic Exposure", | |
448 | .minimum = 0, | |
449 | .maximum = 1, | |
450 | .step = 1, | |
451 | .default_value = 1, | |
452 | } | |
453 | }; | |
454 | ||
7397bfbe | 455 | static struct soc_camera_ops mt9v022_ops = { |
7397bfbe | 456 | .init = mt9v022_init, |
09e231b3 | 457 | .set_crop = mt9v022_set_crop, |
ad5f2e85 GL |
458 | .set_bus_param = mt9v022_set_bus_param, |
459 | .query_bus_param = mt9v022_query_bus_param, | |
7397bfbe GL |
460 | .controls = mt9v022_controls, |
461 | .num_controls = ARRAY_SIZE(mt9v022_controls), | |
7397bfbe GL |
462 | }; |
463 | ||
979ea1dd | 464 | static int mt9v022_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
7397bfbe | 465 | { |
979ea1dd | 466 | struct i2c_client *client = sd->priv; |
7397bfbe GL |
467 | int data; |
468 | ||
469 | switch (ctrl->id) { | |
470 | case V4L2_CID_VFLIP: | |
9538e1c2 | 471 | data = reg_read(client, MT9V022_READ_MODE); |
7397bfbe GL |
472 | if (data < 0) |
473 | return -EIO; | |
474 | ctrl->value = !!(data & 0x10); | |
475 | break; | |
476 | case V4L2_CID_HFLIP: | |
9538e1c2 | 477 | data = reg_read(client, MT9V022_READ_MODE); |
7397bfbe GL |
478 | if (data < 0) |
479 | return -EIO; | |
480 | ctrl->value = !!(data & 0x20); | |
481 | break; | |
482 | case V4L2_CID_EXPOSURE_AUTO: | |
9538e1c2 | 483 | data = reg_read(client, MT9V022_AEC_AGC_ENABLE); |
7397bfbe GL |
484 | if (data < 0) |
485 | return -EIO; | |
486 | ctrl->value = !!(data & 0x1); | |
487 | break; | |
488 | case V4L2_CID_AUTOGAIN: | |
9538e1c2 | 489 | data = reg_read(client, MT9V022_AEC_AGC_ENABLE); |
7397bfbe GL |
490 | if (data < 0) |
491 | return -EIO; | |
492 | ctrl->value = !!(data & 0x2); | |
493 | break; | |
494 | } | |
495 | return 0; | |
496 | } | |
497 | ||
979ea1dd | 498 | static int mt9v022_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
7397bfbe GL |
499 | { |
500 | int data; | |
979ea1dd GL |
501 | struct i2c_client *client = sd->priv; |
502 | struct soc_camera_device *icd = client->dev.platform_data; | |
7397bfbe GL |
503 | const struct v4l2_queryctrl *qctrl; |
504 | ||
505 | qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id); | |
7397bfbe GL |
506 | if (!qctrl) |
507 | return -EINVAL; | |
508 | ||
509 | switch (ctrl->id) { | |
510 | case V4L2_CID_VFLIP: | |
511 | if (ctrl->value) | |
9538e1c2 | 512 | data = reg_set(client, MT9V022_READ_MODE, 0x10); |
7397bfbe | 513 | else |
9538e1c2 | 514 | data = reg_clear(client, MT9V022_READ_MODE, 0x10); |
7397bfbe GL |
515 | if (data < 0) |
516 | return -EIO; | |
517 | break; | |
518 | case V4L2_CID_HFLIP: | |
519 | if (ctrl->value) | |
9538e1c2 | 520 | data = reg_set(client, MT9V022_READ_MODE, 0x20); |
7397bfbe | 521 | else |
9538e1c2 | 522 | data = reg_clear(client, MT9V022_READ_MODE, 0x20); |
7397bfbe GL |
523 | if (data < 0) |
524 | return -EIO; | |
525 | break; | |
526 | case V4L2_CID_GAIN: | |
527 | /* mt9v022 has minimum == default */ | |
528 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) | |
529 | return -EINVAL; | |
530 | else { | |
531 | unsigned long range = qctrl->maximum - qctrl->minimum; | |
532 | /* Datasheet says 16 to 64. autogain only works properly | |
533 | * after setting gain to maximum 14. Larger values | |
534 | * produce "white fly" noise effect. On the whole, | |
535 | * manually setting analog gain does no good. */ | |
536 | unsigned long gain = ((ctrl->value - qctrl->minimum) * | |
537 | 10 + range / 2) / range + 4; | |
538 | if (gain >= 32) | |
539 | gain &= ~1; | |
540 | /* The user wants to set gain manually, hope, she | |
541 | * knows, what she's doing... Switch AGC off. */ | |
542 | ||
9538e1c2 | 543 | if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2) < 0) |
7397bfbe GL |
544 | return -EIO; |
545 | ||
546 | dev_info(&icd->dev, "Setting gain from %d to %lu\n", | |
9538e1c2 GL |
547 | reg_read(client, MT9V022_ANALOG_GAIN), gain); |
548 | if (reg_write(client, MT9V022_ANALOG_GAIN, gain) < 0) | |
7397bfbe GL |
549 | return -EIO; |
550 | icd->gain = ctrl->value; | |
551 | } | |
552 | break; | |
553 | case V4L2_CID_EXPOSURE: | |
554 | /* mt9v022 has maximum == default */ | |
555 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) | |
556 | return -EINVAL; | |
557 | else { | |
558 | unsigned long range = qctrl->maximum - qctrl->minimum; | |
559 | unsigned long shutter = ((ctrl->value - qctrl->minimum) * | |
560 | 479 + range / 2) / range + 1; | |
561 | /* The user wants to set shutter width manually, hope, | |
562 | * she knows, what she's doing... Switch AEC off. */ | |
563 | ||
9538e1c2 | 564 | if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1) < 0) |
7397bfbe GL |
565 | return -EIO; |
566 | ||
567 | dev_dbg(&icd->dev, "Shutter width from %d to %lu\n", | |
9538e1c2 | 568 | reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH), |
7397bfbe | 569 | shutter); |
9538e1c2 | 570 | if (reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, |
7397bfbe GL |
571 | shutter) < 0) |
572 | return -EIO; | |
573 | icd->exposure = ctrl->value; | |
574 | } | |
575 | break; | |
576 | case V4L2_CID_AUTOGAIN: | |
577 | if (ctrl->value) | |
9538e1c2 | 578 | data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x2); |
7397bfbe | 579 | else |
9538e1c2 | 580 | data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2); |
7397bfbe GL |
581 | if (data < 0) |
582 | return -EIO; | |
583 | break; | |
584 | case V4L2_CID_EXPOSURE_AUTO: | |
585 | if (ctrl->value) | |
9538e1c2 | 586 | data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x1); |
7397bfbe | 587 | else |
9538e1c2 | 588 | data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1); |
7397bfbe GL |
589 | if (data < 0) |
590 | return -EIO; | |
591 | break; | |
592 | } | |
593 | return 0; | |
594 | } | |
595 | ||
596 | /* Interface active, can use i2c. If it fails, it can indeed mean, that | |
597 | * this wasn't our capture interface, so, we wait for the right one */ | |
40e2e092 GL |
598 | static int mt9v022_video_probe(struct soc_camera_device *icd, |
599 | struct i2c_client *client) | |
7397bfbe | 600 | { |
979ea1dd | 601 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
40e2e092 | 602 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
7397bfbe GL |
603 | s32 data; |
604 | int ret; | |
e958e27a | 605 | unsigned long flags; |
7397bfbe GL |
606 | |
607 | if (!icd->dev.parent || | |
608 | to_soc_camera_host(icd->dev.parent)->nr != icd->iface) | |
609 | return -ENODEV; | |
610 | ||
611 | /* Read out the chip version register */ | |
9538e1c2 | 612 | data = reg_read(client, MT9V022_CHIP_VERSION); |
7397bfbe GL |
613 | |
614 | /* must be 0x1311 or 0x1313 */ | |
615 | if (data != 0x1311 && data != 0x1313) { | |
616 | ret = -ENODEV; | |
617 | dev_info(&icd->dev, "No MT9V022 detected, ID register 0x%x\n", | |
618 | data); | |
619 | goto ei2c; | |
620 | } | |
621 | ||
622 | /* Soft reset */ | |
9538e1c2 | 623 | ret = reg_write(client, MT9V022_RESET, 1); |
7397bfbe GL |
624 | if (ret < 0) |
625 | goto ei2c; | |
626 | /* 15 clock cycles */ | |
627 | udelay(200); | |
9538e1c2 | 628 | if (reg_read(client, MT9V022_RESET)) { |
7397bfbe | 629 | dev_err(&icd->dev, "Resetting MT9V022 failed!\n"); |
40e2e092 GL |
630 | if (ret > 0) |
631 | ret = -EIO; | |
7397bfbe GL |
632 | goto ei2c; |
633 | } | |
634 | ||
635 | /* Set monochrome or colour sensor type */ | |
636 | if (sensor_type && (!strcmp("colour", sensor_type) || | |
637 | !strcmp("color", sensor_type))) { | |
9538e1c2 | 638 | ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11); |
7397bfbe | 639 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATC; |
26f1b942 | 640 | icd->formats = mt9v022_colour_formats; |
7397bfbe | 641 | } else { |
9538e1c2 | 642 | ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 0x11); |
7397bfbe | 643 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATM; |
26f1b942 | 644 | icd->formats = mt9v022_monochrome_formats; |
7397bfbe GL |
645 | } |
646 | ||
e958e27a | 647 | if (ret < 0) |
40e2e092 | 648 | goto ei2c; |
e958e27a SH |
649 | |
650 | icd->num_formats = 0; | |
651 | ||
652 | /* | |
653 | * This is a 10bit sensor, so by default we only allow 10bit. | |
654 | * The platform may support different bus widths due to | |
655 | * different routing of the data lines. | |
656 | */ | |
657 | if (icl->query_bus_param) | |
658 | flags = icl->query_bus_param(icl); | |
659 | else | |
660 | flags = SOCAM_DATAWIDTH_10; | |
661 | ||
662 | if (flags & SOCAM_DATAWIDTH_10) | |
663 | icd->num_formats++; | |
664 | else | |
665 | icd->formats++; | |
666 | ||
667 | if (flags & SOCAM_DATAWIDTH_8) | |
668 | icd->num_formats++; | |
669 | ||
7397bfbe GL |
670 | dev_info(&icd->dev, "Detected a MT9V022 chip ID %x, %s sensor\n", |
671 | data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ? | |
672 | "monochrome" : "colour"); | |
673 | ||
7397bfbe GL |
674 | ei2c: |
675 | return ret; | |
676 | } | |
677 | ||
678 | static void mt9v022_video_remove(struct soc_camera_device *icd) | |
679 | { | |
40e2e092 GL |
680 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); |
681 | struct soc_camera_link *icl = to_soc_camera_link(icd); | |
7397bfbe | 682 | |
40e2e092 | 683 | dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", client->addr, |
a85bdace | 684 | icd->dev.parent, icd->vdev); |
594bb46d GL |
685 | if (icl->free_bus) |
686 | icl->free_bus(icl); | |
7397bfbe GL |
687 | } |
688 | ||
979ea1dd GL |
689 | static struct v4l2_subdev_core_ops mt9v022_subdev_core_ops = { |
690 | .g_ctrl = mt9v022_g_ctrl, | |
691 | .s_ctrl = mt9v022_s_ctrl, | |
692 | .g_chip_ident = mt9v022_g_chip_ident, | |
693 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
694 | .g_register = mt9v022_g_register, | |
695 | .s_register = mt9v022_s_register, | |
696 | #endif | |
697 | }; | |
698 | ||
699 | static struct v4l2_subdev_video_ops mt9v022_subdev_video_ops = { | |
700 | .s_stream = mt9v022_s_stream, | |
701 | .s_fmt = mt9v022_s_fmt, | |
702 | .try_fmt = mt9v022_try_fmt, | |
703 | }; | |
704 | ||
705 | static struct v4l2_subdev_ops mt9v022_subdev_ops = { | |
706 | .core = &mt9v022_subdev_core_ops, | |
707 | .video = &mt9v022_subdev_video_ops, | |
708 | }; | |
709 | ||
d2653e92 JD |
710 | static int mt9v022_probe(struct i2c_client *client, |
711 | const struct i2c_device_id *did) | |
7397bfbe GL |
712 | { |
713 | struct mt9v022 *mt9v022; | |
40e2e092 | 714 | struct soc_camera_device *icd = client->dev.platform_data; |
7397bfbe | 715 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); |
40e2e092 | 716 | struct soc_camera_link *icl; |
7397bfbe GL |
717 | int ret; |
718 | ||
40e2e092 GL |
719 | if (!icd) { |
720 | dev_err(&client->dev, "MT9V022: missing soc-camera data!\n"); | |
721 | return -EINVAL; | |
722 | } | |
723 | ||
724 | icl = to_soc_camera_link(icd); | |
7397bfbe GL |
725 | if (!icl) { |
726 | dev_err(&client->dev, "MT9V022 driver needs platform data\n"); | |
727 | return -EINVAL; | |
728 | } | |
729 | ||
730 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { | |
731 | dev_warn(&adapter->dev, | |
732 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); | |
733 | return -EIO; | |
734 | } | |
735 | ||
736 | mt9v022 = kzalloc(sizeof(struct mt9v022), GFP_KERNEL); | |
737 | if (!mt9v022) | |
738 | return -ENOMEM; | |
739 | ||
979ea1dd GL |
740 | v4l2_i2c_subdev_init(&mt9v022->subdev, client, &mt9v022_subdev_ops); |
741 | ||
7397bfbe | 742 | mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT; |
7397bfbe | 743 | |
a0705b07 GL |
744 | icd->ops = &mt9v022_ops; |
745 | icd->rect_max.left = 1; | |
746 | icd->rect_max.top = 4; | |
747 | icd->rect_max.width = 752; | |
748 | icd->rect_max.height = 480; | |
749 | icd->rect_current.left = 1; | |
750 | icd->rect_current.top = 4; | |
751 | icd->width_min = 48; | |
752 | icd->height_min = 32; | |
753 | icd->y_skip_top = 1; | |
7397bfbe | 754 | |
40e2e092 GL |
755 | ret = mt9v022_video_probe(icd, client); |
756 | if (ret) { | |
757 | icd->ops = NULL; | |
758 | i2c_set_clientdata(client, NULL); | |
759 | kfree(mt9v022); | |
760 | } | |
7397bfbe | 761 | |
7397bfbe GL |
762 | return ret; |
763 | } | |
764 | ||
765 | static int mt9v022_remove(struct i2c_client *client) | |
766 | { | |
979ea1dd | 767 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
40e2e092 | 768 | struct soc_camera_device *icd = client->dev.platform_data; |
7397bfbe | 769 | |
40e2e092 GL |
770 | icd->ops = NULL; |
771 | mt9v022_video_remove(icd); | |
772 | i2c_set_clientdata(client, NULL); | |
773 | client->driver = NULL; | |
7397bfbe GL |
774 | kfree(mt9v022); |
775 | ||
776 | return 0; | |
777 | } | |
3760f736 JD |
778 | static const struct i2c_device_id mt9v022_id[] = { |
779 | { "mt9v022", 0 }, | |
780 | { } | |
781 | }; | |
782 | MODULE_DEVICE_TABLE(i2c, mt9v022_id); | |
783 | ||
7397bfbe GL |
784 | static struct i2c_driver mt9v022_i2c_driver = { |
785 | .driver = { | |
786 | .name = "mt9v022", | |
787 | }, | |
788 | .probe = mt9v022_probe, | |
789 | .remove = mt9v022_remove, | |
3760f736 | 790 | .id_table = mt9v022_id, |
7397bfbe GL |
791 | }; |
792 | ||
793 | static int __init mt9v022_mod_init(void) | |
794 | { | |
795 | return i2c_add_driver(&mt9v022_i2c_driver); | |
796 | } | |
797 | ||
798 | static void __exit mt9v022_mod_exit(void) | |
799 | { | |
800 | i2c_del_driver(&mt9v022_i2c_driver); | |
801 | } | |
802 | ||
803 | module_init(mt9v022_mod_init); | |
804 | module_exit(mt9v022_mod_exit); | |
805 | ||
806 | MODULE_DESCRIPTION("Micron MT9V022 Camera driver"); | |
807 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | |
808 | MODULE_LICENSE("GPL"); |