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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 | ||
17 | #include <media/v4l2-common.h> | |
18 | #include <media/v4l2-chip-ident.h> | |
19 | #include <media/soc_camera.h> | |
20 | ||
7397bfbe GL |
21 | /* mt9v022 i2c address 0x48, 0x4c, 0x58, 0x5c |
22 | * The platform has to define i2c_board_info | |
23 | * and call i2c_register_board_info() */ | |
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 { | |
88 | struct i2c_client *client; | |
89 | struct soc_camera_device icd; | |
7fb0fd05 | 90 | int model; /* V4L2_IDENT_MT9V022* codes from v4l2-chip-ident.h */ |
7397bfbe | 91 | u16 chip_control; |
7397bfbe GL |
92 | }; |
93 | ||
94 | static int reg_read(struct soc_camera_device *icd, const u8 reg) | |
95 | { | |
96 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
97 | struct i2c_client *client = mt9v022->client; | |
98 | s32 data = i2c_smbus_read_word_data(client, reg); | |
99 | return data < 0 ? data : swab16(data); | |
100 | } | |
101 | ||
102 | static int reg_write(struct soc_camera_device *icd, const u8 reg, | |
103 | const u16 data) | |
104 | { | |
105 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
106 | return i2c_smbus_write_word_data(mt9v022->client, reg, swab16(data)); | |
107 | } | |
108 | ||
109 | static int reg_set(struct soc_camera_device *icd, const u8 reg, | |
110 | const u16 data) | |
111 | { | |
112 | int ret; | |
113 | ||
114 | ret = reg_read(icd, reg); | |
115 | if (ret < 0) | |
116 | return ret; | |
117 | return reg_write(icd, reg, ret | data); | |
118 | } | |
119 | ||
120 | static int reg_clear(struct soc_camera_device *icd, const u8 reg, | |
121 | const u16 data) | |
122 | { | |
123 | int ret; | |
124 | ||
125 | ret = reg_read(icd, reg); | |
126 | if (ret < 0) | |
127 | return ret; | |
128 | return reg_write(icd, reg, ret & ~data); | |
129 | } | |
130 | ||
131 | static int mt9v022_init(struct soc_camera_device *icd) | |
132 | { | |
133 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
81034663 | 134 | struct soc_camera_link *icl = mt9v022->client->dev.platform_data; |
7397bfbe GL |
135 | int ret; |
136 | ||
81034663 SH |
137 | if (icl->power) { |
138 | ret = icl->power(&mt9v022->client->dev, 1); | |
139 | if (ret < 0) { | |
140 | dev_err(icd->vdev->parent, | |
141 | "Platform failed to power-on the camera.\n"); | |
142 | return ret; | |
143 | } | |
144 | } | |
145 | ||
146 | /* | |
147 | * The camera could have been already on, we hard-reset it additionally, | |
148 | * if available. Soft reset is done in video_probe(). | |
149 | */ | |
150 | if (icl->reset) | |
151 | icl->reset(&mt9v022->client->dev); | |
152 | ||
7397bfbe GL |
153 | /* Almost the default mode: master, parallel, simultaneous, and an |
154 | * undocumented bit 0x200, which is present in table 7, but not in 8, | |
155 | * plus snapshot mode to disable scan for now */ | |
156 | mt9v022->chip_control |= 0x10; | |
157 | ret = reg_write(icd, MT9V022_CHIP_CONTROL, mt9v022->chip_control); | |
11211641 GL |
158 | if (!ret) |
159 | ret = reg_write(icd, MT9V022_READ_MODE, 0x300); | |
7397bfbe GL |
160 | |
161 | /* All defaults */ | |
11211641 | 162 | if (!ret) |
7397bfbe GL |
163 | /* AEC, AGC on */ |
164 | ret = reg_set(icd, MT9V022_AEC_AGC_ENABLE, 0x3); | |
11211641 | 165 | if (!ret) |
7397bfbe | 166 | ret = reg_write(icd, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480); |
11211641 | 167 | if (!ret) |
7397bfbe GL |
168 | /* default - auto */ |
169 | ret = reg_clear(icd, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1); | |
11211641 | 170 | if (!ret) |
7397bfbe GL |
171 | ret = reg_write(icd, MT9V022_DIGITAL_TEST_PATTERN, 0); |
172 | ||
11211641 | 173 | return ret; |
7397bfbe GL |
174 | } |
175 | ||
176 | static int mt9v022_release(struct soc_camera_device *icd) | |
177 | { | |
81034663 SH |
178 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
179 | struct soc_camera_link *icl = mt9v022->client->dev.platform_data; | |
180 | ||
181 | if (icl->power) | |
182 | icl->power(&mt9v022->client->dev, 0); | |
183 | ||
7397bfbe GL |
184 | return 0; |
185 | } | |
186 | ||
187 | static int mt9v022_start_capture(struct soc_camera_device *icd) | |
188 | { | |
189 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
190 | /* Switch to master "normal" mode */ | |
191 | mt9v022->chip_control &= ~0x10; | |
192 | if (reg_write(icd, MT9V022_CHIP_CONTROL, | |
193 | mt9v022->chip_control) < 0) | |
194 | return -EIO; | |
195 | return 0; | |
196 | } | |
197 | ||
198 | static int mt9v022_stop_capture(struct soc_camera_device *icd) | |
199 | { | |
200 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
201 | /* Switch to snapshot mode */ | |
202 | mt9v022->chip_control |= 0x10; | |
203 | if (reg_write(icd, MT9V022_CHIP_CONTROL, | |
204 | mt9v022->chip_control) < 0) | |
205 | return -EIO; | |
206 | return 0; | |
207 | } | |
208 | ||
ad5f2e85 GL |
209 | static int mt9v022_set_bus_param(struct soc_camera_device *icd, |
210 | unsigned long flags) | |
7397bfbe GL |
211 | { |
212 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
bd73b36f | 213 | struct soc_camera_link *icl = mt9v022->client->dev.platform_data; |
ad5f2e85 | 214 | unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK; |
7397bfbe | 215 | int ret; |
ad5f2e85 | 216 | u16 pixclk = 0; |
7397bfbe GL |
217 | |
218 | /* Only one width bit may be set */ | |
219 | if (!is_power_of_2(width_flag)) | |
220 | return -EINVAL; | |
221 | ||
e958e27a SH |
222 | if (icl->set_bus_param) { |
223 | ret = icl->set_bus_param(icl, width_flag); | |
224 | if (ret) | |
ad5f2e85 | 225 | return ret; |
e958e27a SH |
226 | } else { |
227 | /* | |
228 | * Without board specific bus width settings we only support the | |
229 | * sensors native bus width | |
230 | */ | |
231 | if (width_flag != SOCAM_DATAWIDTH_10) | |
232 | return -EINVAL; | |
ad5f2e85 GL |
233 | } |
234 | ||
bd73b36f GL |
235 | flags = soc_camera_apply_sensor_flags(icl, flags); |
236 | ||
ad5f2e85 GL |
237 | if (flags & SOCAM_PCLK_SAMPLE_RISING) |
238 | pixclk |= 0x10; | |
239 | ||
240 | if (!(flags & SOCAM_HSYNC_ACTIVE_HIGH)) | |
241 | pixclk |= 0x1; | |
242 | ||
243 | if (!(flags & SOCAM_VSYNC_ACTIVE_HIGH)) | |
244 | pixclk |= 0x2; | |
245 | ||
246 | ret = reg_write(icd, MT9V022_PIXCLK_FV_LV, pixclk); | |
247 | if (ret < 0) | |
248 | return ret; | |
249 | ||
250 | if (!(flags & SOCAM_MASTER)) | |
251 | mt9v022->chip_control &= ~0x8; | |
252 | ||
253 | ret = reg_write(icd, MT9V022_CHIP_CONTROL, mt9v022->chip_control); | |
254 | if (ret < 0) | |
255 | return ret; | |
256 | ||
257 | dev_dbg(&icd->dev, "Calculated pixclk 0x%x, chip control 0x%x\n", | |
258 | pixclk, mt9v022->chip_control); | |
259 | ||
260 | return 0; | |
261 | } | |
262 | ||
263 | static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd) | |
264 | { | |
265 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
e958e27a SH |
266 | struct soc_camera_link *icl = mt9v022->client->dev.platform_data; |
267 | unsigned int width_flag; | |
ad5f2e85 | 268 | |
e958e27a SH |
269 | if (icl->query_bus_param) |
270 | width_flag = icl->query_bus_param(icl) & | |
271 | SOCAM_DATAWIDTH_MASK; | |
272 | else | |
273 | width_flag = SOCAM_DATAWIDTH_10; | |
ad5f2e85 GL |
274 | |
275 | return SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING | | |
276 | SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW | | |
277 | SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW | | |
2d9329f3 | 278 | SOCAM_DATA_ACTIVE_HIGH | SOCAM_MASTER | SOCAM_SLAVE | |
ad5f2e85 GL |
279 | width_flag; |
280 | } | |
281 | ||
09e231b3 GL |
282 | static int mt9v022_set_crop(struct soc_camera_device *icd, |
283 | struct v4l2_rect *rect) | |
ad5f2e85 | 284 | { |
ad5f2e85 GL |
285 | int ret; |
286 | ||
7397bfbe GL |
287 | /* Like in example app. Contradicts the datasheet though */ |
288 | ret = reg_read(icd, MT9V022_AEC_AGC_ENABLE); | |
289 | if (ret >= 0) { | |
290 | if (ret & 1) /* Autoexposure */ | |
291 | ret = reg_write(icd, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, | |
292 | rect->height + icd->y_skip_top + 43); | |
293 | else | |
294 | ret = reg_write(icd, MT9V022_TOTAL_SHUTTER_WIDTH, | |
295 | rect->height + icd->y_skip_top + 43); | |
296 | } | |
297 | /* Setup frame format: defaults apart from width and height */ | |
11211641 | 298 | if (!ret) |
7397bfbe | 299 | ret = reg_write(icd, MT9V022_COLUMN_START, rect->left); |
11211641 | 300 | if (!ret) |
7397bfbe | 301 | ret = reg_write(icd, MT9V022_ROW_START, rect->top); |
11211641 | 302 | if (!ret) |
7397bfbe GL |
303 | /* Default 94, Phytec driver says: |
304 | * "width + horizontal blank >= 660" */ | |
305 | ret = reg_write(icd, MT9V022_HORIZONTAL_BLANKING, | |
306 | rect->width > 660 - 43 ? 43 : | |
307 | 660 - rect->width); | |
11211641 | 308 | if (!ret) |
7397bfbe | 309 | ret = reg_write(icd, MT9V022_VERTICAL_BLANKING, 45); |
11211641 | 310 | if (!ret) |
7397bfbe | 311 | ret = reg_write(icd, MT9V022_WINDOW_WIDTH, rect->width); |
11211641 | 312 | if (!ret) |
7397bfbe GL |
313 | ret = reg_write(icd, MT9V022_WINDOW_HEIGHT, |
314 | rect->height + icd->y_skip_top); | |
315 | ||
316 | if (ret < 0) | |
317 | return ret; | |
318 | ||
319 | dev_dbg(&icd->dev, "Frame %ux%u pixel\n", rect->width, rect->height); | |
320 | ||
7397bfbe GL |
321 | return 0; |
322 | } | |
323 | ||
09e231b3 GL |
324 | static int mt9v022_set_fmt(struct soc_camera_device *icd, |
325 | struct v4l2_format *f) | |
326 | { | |
327 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
328 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
329 | struct v4l2_rect rect = { | |
330 | .left = icd->x_current, | |
331 | .top = icd->y_current, | |
332 | .width = pix->width, | |
333 | .height = pix->height, | |
334 | }; | |
335 | ||
336 | /* The caller provides a supported format, as verified per call to | |
337 | * icd->try_fmt(), datawidth is from our supported format list */ | |
338 | switch (pix->pixelformat) { | |
339 | case V4L2_PIX_FMT_GREY: | |
340 | case V4L2_PIX_FMT_Y16: | |
341 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM) | |
342 | return -EINVAL; | |
343 | break; | |
344 | case V4L2_PIX_FMT_SBGGR8: | |
345 | case V4L2_PIX_FMT_SBGGR16: | |
346 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC) | |
347 | return -EINVAL; | |
348 | break; | |
349 | case 0: | |
350 | /* No format change, only geometry */ | |
351 | break; | |
352 | default: | |
353 | return -EINVAL; | |
354 | } | |
355 | ||
356 | /* No support for scaling on this camera, just crop. */ | |
357 | return mt9v022_set_crop(icd, &rect); | |
358 | } | |
359 | ||
d8fac217 GL |
360 | static int mt9v022_try_fmt(struct soc_camera_device *icd, |
361 | struct v4l2_format *f) | |
7397bfbe | 362 | { |
64f5905e GL |
363 | struct v4l2_pix_format *pix = &f->fmt.pix; |
364 | ||
365 | if (pix->height < 32 + icd->y_skip_top) | |
366 | pix->height = 32 + icd->y_skip_top; | |
367 | if (pix->height > 480 + icd->y_skip_top) | |
368 | pix->height = 480 + icd->y_skip_top; | |
369 | if (pix->width < 48) | |
370 | pix->width = 48; | |
371 | if (pix->width > 752) | |
372 | pix->width = 752; | |
373 | pix->width &= ~0x03; /* ? */ | |
7397bfbe GL |
374 | |
375 | return 0; | |
376 | } | |
377 | ||
378 | static int mt9v022_get_chip_id(struct soc_camera_device *icd, | |
aecde8b5 | 379 | struct v4l2_dbg_chip_ident *id) |
7397bfbe GL |
380 | { |
381 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
382 | ||
aecde8b5 | 383 | if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) |
7397bfbe GL |
384 | return -EINVAL; |
385 | ||
aecde8b5 | 386 | if (id->match.addr != mt9v022->client->addr) |
7397bfbe GL |
387 | return -ENODEV; |
388 | ||
389 | id->ident = mt9v022->model; | |
390 | id->revision = 0; | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
395 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
396 | static int mt9v022_get_register(struct soc_camera_device *icd, | |
aecde8b5 | 397 | struct v4l2_dbg_register *reg) |
7397bfbe GL |
398 | { |
399 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
400 | ||
aecde8b5 | 401 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
7397bfbe GL |
402 | return -EINVAL; |
403 | ||
aecde8b5 | 404 | if (reg->match.addr != mt9v022->client->addr) |
7397bfbe GL |
405 | return -ENODEV; |
406 | ||
aecde8b5 | 407 | reg->size = 2; |
7397bfbe GL |
408 | reg->val = reg_read(icd, reg->reg); |
409 | ||
410 | if (reg->val > 0xffff) | |
411 | return -EIO; | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | static int mt9v022_set_register(struct soc_camera_device *icd, | |
aecde8b5 | 417 | struct v4l2_dbg_register *reg) |
7397bfbe GL |
418 | { |
419 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
420 | ||
aecde8b5 | 421 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
7397bfbe GL |
422 | return -EINVAL; |
423 | ||
aecde8b5 | 424 | if (reg->match.addr != mt9v022->client->addr) |
7397bfbe GL |
425 | return -ENODEV; |
426 | ||
427 | if (reg_write(icd, reg->reg, reg->val) < 0) | |
428 | return -EIO; | |
429 | ||
430 | return 0; | |
431 | } | |
432 | #endif | |
433 | ||
4407a463 | 434 | static const struct v4l2_queryctrl mt9v022_controls[] = { |
7397bfbe GL |
435 | { |
436 | .id = V4L2_CID_VFLIP, | |
437 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
438 | .name = "Flip Vertically", | |
439 | .minimum = 0, | |
440 | .maximum = 1, | |
441 | .step = 1, | |
442 | .default_value = 0, | |
443 | }, { | |
444 | .id = V4L2_CID_HFLIP, | |
445 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
446 | .name = "Flip Horizontally", | |
447 | .minimum = 0, | |
448 | .maximum = 1, | |
449 | .step = 1, | |
450 | .default_value = 0, | |
451 | }, { | |
452 | .id = V4L2_CID_GAIN, | |
453 | .type = V4L2_CTRL_TYPE_INTEGER, | |
454 | .name = "Analog Gain", | |
455 | .minimum = 64, | |
456 | .maximum = 127, | |
457 | .step = 1, | |
458 | .default_value = 64, | |
459 | .flags = V4L2_CTRL_FLAG_SLIDER, | |
460 | }, { | |
461 | .id = V4L2_CID_EXPOSURE, | |
462 | .type = V4L2_CTRL_TYPE_INTEGER, | |
463 | .name = "Exposure", | |
464 | .minimum = 1, | |
465 | .maximum = 255, | |
466 | .step = 1, | |
467 | .default_value = 255, | |
468 | .flags = V4L2_CTRL_FLAG_SLIDER, | |
469 | }, { | |
470 | .id = V4L2_CID_AUTOGAIN, | |
471 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
472 | .name = "Automatic Gain", | |
473 | .minimum = 0, | |
474 | .maximum = 1, | |
475 | .step = 1, | |
476 | .default_value = 1, | |
477 | }, { | |
478 | .id = V4L2_CID_EXPOSURE_AUTO, | |
479 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
480 | .name = "Automatic Exposure", | |
481 | .minimum = 0, | |
482 | .maximum = 1, | |
483 | .step = 1, | |
484 | .default_value = 1, | |
485 | } | |
486 | }; | |
487 | ||
26f1b942 GL |
488 | static int mt9v022_video_probe(struct soc_camera_device *); |
489 | static void mt9v022_video_remove(struct soc_camera_device *); | |
490 | static int mt9v022_get_control(struct soc_camera_device *, struct v4l2_control *); | |
491 | static int mt9v022_set_control(struct soc_camera_device *, struct v4l2_control *); | |
7397bfbe GL |
492 | |
493 | static struct soc_camera_ops mt9v022_ops = { | |
494 | .owner = THIS_MODULE, | |
26f1b942 GL |
495 | .probe = mt9v022_video_probe, |
496 | .remove = mt9v022_video_remove, | |
7397bfbe GL |
497 | .init = mt9v022_init, |
498 | .release = mt9v022_release, | |
499 | .start_capture = mt9v022_start_capture, | |
500 | .stop_capture = mt9v022_stop_capture, | |
09e231b3 | 501 | .set_crop = mt9v022_set_crop, |
d8fac217 GL |
502 | .set_fmt = mt9v022_set_fmt, |
503 | .try_fmt = mt9v022_try_fmt, | |
ad5f2e85 GL |
504 | .set_bus_param = mt9v022_set_bus_param, |
505 | .query_bus_param = mt9v022_query_bus_param, | |
7397bfbe GL |
506 | .controls = mt9v022_controls, |
507 | .num_controls = ARRAY_SIZE(mt9v022_controls), | |
508 | .get_control = mt9v022_get_control, | |
509 | .set_control = mt9v022_set_control, | |
510 | .get_chip_id = mt9v022_get_chip_id, | |
511 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
512 | .get_register = mt9v022_get_register, | |
513 | .set_register = mt9v022_set_register, | |
514 | #endif | |
515 | }; | |
516 | ||
517 | static int mt9v022_get_control(struct soc_camera_device *icd, | |
518 | struct v4l2_control *ctrl) | |
519 | { | |
520 | int data; | |
521 | ||
522 | switch (ctrl->id) { | |
523 | case V4L2_CID_VFLIP: | |
524 | data = reg_read(icd, MT9V022_READ_MODE); | |
525 | if (data < 0) | |
526 | return -EIO; | |
527 | ctrl->value = !!(data & 0x10); | |
528 | break; | |
529 | case V4L2_CID_HFLIP: | |
530 | data = reg_read(icd, MT9V022_READ_MODE); | |
531 | if (data < 0) | |
532 | return -EIO; | |
533 | ctrl->value = !!(data & 0x20); | |
534 | break; | |
535 | case V4L2_CID_EXPOSURE_AUTO: | |
536 | data = reg_read(icd, MT9V022_AEC_AGC_ENABLE); | |
537 | if (data < 0) | |
538 | return -EIO; | |
539 | ctrl->value = !!(data & 0x1); | |
540 | break; | |
541 | case V4L2_CID_AUTOGAIN: | |
542 | data = reg_read(icd, MT9V022_AEC_AGC_ENABLE); | |
543 | if (data < 0) | |
544 | return -EIO; | |
545 | ctrl->value = !!(data & 0x2); | |
546 | break; | |
547 | } | |
548 | return 0; | |
549 | } | |
550 | ||
551 | static int mt9v022_set_control(struct soc_camera_device *icd, | |
552 | struct v4l2_control *ctrl) | |
553 | { | |
554 | int data; | |
555 | const struct v4l2_queryctrl *qctrl; | |
556 | ||
557 | qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id); | |
558 | ||
559 | if (!qctrl) | |
560 | return -EINVAL; | |
561 | ||
562 | switch (ctrl->id) { | |
563 | case V4L2_CID_VFLIP: | |
564 | if (ctrl->value) | |
565 | data = reg_set(icd, MT9V022_READ_MODE, 0x10); | |
566 | else | |
567 | data = reg_clear(icd, MT9V022_READ_MODE, 0x10); | |
568 | if (data < 0) | |
569 | return -EIO; | |
570 | break; | |
571 | case V4L2_CID_HFLIP: | |
572 | if (ctrl->value) | |
573 | data = reg_set(icd, MT9V022_READ_MODE, 0x20); | |
574 | else | |
575 | data = reg_clear(icd, MT9V022_READ_MODE, 0x20); | |
576 | if (data < 0) | |
577 | return -EIO; | |
578 | break; | |
579 | case V4L2_CID_GAIN: | |
580 | /* mt9v022 has minimum == default */ | |
581 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) | |
582 | return -EINVAL; | |
583 | else { | |
584 | unsigned long range = qctrl->maximum - qctrl->minimum; | |
585 | /* Datasheet says 16 to 64. autogain only works properly | |
586 | * after setting gain to maximum 14. Larger values | |
587 | * produce "white fly" noise effect. On the whole, | |
588 | * manually setting analog gain does no good. */ | |
589 | unsigned long gain = ((ctrl->value - qctrl->minimum) * | |
590 | 10 + range / 2) / range + 4; | |
591 | if (gain >= 32) | |
592 | gain &= ~1; | |
593 | /* The user wants to set gain manually, hope, she | |
594 | * knows, what she's doing... Switch AGC off. */ | |
595 | ||
596 | if (reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x2) < 0) | |
597 | return -EIO; | |
598 | ||
599 | dev_info(&icd->dev, "Setting gain from %d to %lu\n", | |
600 | reg_read(icd, MT9V022_ANALOG_GAIN), gain); | |
601 | if (reg_write(icd, MT9V022_ANALOG_GAIN, gain) < 0) | |
602 | return -EIO; | |
603 | icd->gain = ctrl->value; | |
604 | } | |
605 | break; | |
606 | case V4L2_CID_EXPOSURE: | |
607 | /* mt9v022 has maximum == default */ | |
608 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) | |
609 | return -EINVAL; | |
610 | else { | |
611 | unsigned long range = qctrl->maximum - qctrl->minimum; | |
612 | unsigned long shutter = ((ctrl->value - qctrl->minimum) * | |
613 | 479 + range / 2) / range + 1; | |
614 | /* The user wants to set shutter width manually, hope, | |
615 | * she knows, what she's doing... Switch AEC off. */ | |
616 | ||
617 | if (reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x1) < 0) | |
618 | return -EIO; | |
619 | ||
620 | dev_dbg(&icd->dev, "Shutter width from %d to %lu\n", | |
621 | reg_read(icd, MT9V022_TOTAL_SHUTTER_WIDTH), | |
622 | shutter); | |
623 | if (reg_write(icd, MT9V022_TOTAL_SHUTTER_WIDTH, | |
624 | shutter) < 0) | |
625 | return -EIO; | |
626 | icd->exposure = ctrl->value; | |
627 | } | |
628 | break; | |
629 | case V4L2_CID_AUTOGAIN: | |
630 | if (ctrl->value) | |
631 | data = reg_set(icd, MT9V022_AEC_AGC_ENABLE, 0x2); | |
632 | else | |
633 | data = reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x2); | |
634 | if (data < 0) | |
635 | return -EIO; | |
636 | break; | |
637 | case V4L2_CID_EXPOSURE_AUTO: | |
638 | if (ctrl->value) | |
639 | data = reg_set(icd, MT9V022_AEC_AGC_ENABLE, 0x1); | |
640 | else | |
641 | data = reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x1); | |
642 | if (data < 0) | |
643 | return -EIO; | |
644 | break; | |
645 | } | |
646 | return 0; | |
647 | } | |
648 | ||
649 | /* Interface active, can use i2c. If it fails, it can indeed mean, that | |
650 | * this wasn't our capture interface, so, we wait for the right one */ | |
651 | static int mt9v022_video_probe(struct soc_camera_device *icd) | |
652 | { | |
653 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
297a7ef7 | 654 | struct soc_camera_link *icl = mt9v022->client->dev.platform_data; |
7397bfbe GL |
655 | s32 data; |
656 | int ret; | |
e958e27a | 657 | unsigned long flags; |
7397bfbe GL |
658 | |
659 | if (!icd->dev.parent || | |
660 | to_soc_camera_host(icd->dev.parent)->nr != icd->iface) | |
661 | return -ENODEV; | |
662 | ||
663 | /* Read out the chip version register */ | |
664 | data = reg_read(icd, MT9V022_CHIP_VERSION); | |
665 | ||
666 | /* must be 0x1311 or 0x1313 */ | |
667 | if (data != 0x1311 && data != 0x1313) { | |
668 | ret = -ENODEV; | |
669 | dev_info(&icd->dev, "No MT9V022 detected, ID register 0x%x\n", | |
670 | data); | |
671 | goto ei2c; | |
672 | } | |
673 | ||
674 | /* Soft reset */ | |
675 | ret = reg_write(icd, MT9V022_RESET, 1); | |
676 | if (ret < 0) | |
677 | goto ei2c; | |
678 | /* 15 clock cycles */ | |
679 | udelay(200); | |
680 | if (reg_read(icd, MT9V022_RESET)) { | |
681 | dev_err(&icd->dev, "Resetting MT9V022 failed!\n"); | |
682 | goto ei2c; | |
683 | } | |
684 | ||
685 | /* Set monochrome or colour sensor type */ | |
686 | if (sensor_type && (!strcmp("colour", sensor_type) || | |
687 | !strcmp("color", sensor_type))) { | |
688 | ret = reg_write(icd, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11); | |
689 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATC; | |
26f1b942 | 690 | icd->formats = mt9v022_colour_formats; |
7397bfbe GL |
691 | } else { |
692 | ret = reg_write(icd, MT9V022_PIXEL_OPERATION_MODE, 0x11); | |
693 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATM; | |
26f1b942 | 694 | icd->formats = mt9v022_monochrome_formats; |
7397bfbe GL |
695 | } |
696 | ||
e958e27a SH |
697 | if (ret < 0) |
698 | goto eisis; | |
699 | ||
700 | icd->num_formats = 0; | |
701 | ||
702 | /* | |
703 | * This is a 10bit sensor, so by default we only allow 10bit. | |
704 | * The platform may support different bus widths due to | |
705 | * different routing of the data lines. | |
706 | */ | |
707 | if (icl->query_bus_param) | |
708 | flags = icl->query_bus_param(icl); | |
709 | else | |
710 | flags = SOCAM_DATAWIDTH_10; | |
711 | ||
712 | if (flags & SOCAM_DATAWIDTH_10) | |
713 | icd->num_formats++; | |
714 | else | |
715 | icd->formats++; | |
716 | ||
717 | if (flags & SOCAM_DATAWIDTH_8) | |
718 | icd->num_formats++; | |
719 | ||
720 | ret = soc_camera_video_start(icd); | |
7397bfbe GL |
721 | if (ret < 0) |
722 | goto eisis; | |
723 | ||
724 | dev_info(&icd->dev, "Detected a MT9V022 chip ID %x, %s sensor\n", | |
725 | data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ? | |
726 | "monochrome" : "colour"); | |
727 | ||
728 | return 0; | |
729 | ||
730 | eisis: | |
731 | ei2c: | |
732 | return ret; | |
733 | } | |
734 | ||
735 | static void mt9v022_video_remove(struct soc_camera_device *icd) | |
736 | { | |
737 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
594bb46d | 738 | struct soc_camera_link *icl = mt9v022->client->dev.platform_data; |
7397bfbe GL |
739 | |
740 | dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9v022->client->addr, | |
a85bdace GL |
741 | icd->dev.parent, icd->vdev); |
742 | soc_camera_video_stop(icd); | |
594bb46d GL |
743 | if (icl->free_bus) |
744 | icl->free_bus(icl); | |
7397bfbe GL |
745 | } |
746 | ||
d2653e92 JD |
747 | static int mt9v022_probe(struct i2c_client *client, |
748 | const struct i2c_device_id *did) | |
7397bfbe GL |
749 | { |
750 | struct mt9v022 *mt9v022; | |
751 | struct soc_camera_device *icd; | |
752 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); | |
753 | struct soc_camera_link *icl = client->dev.platform_data; | |
754 | int ret; | |
755 | ||
756 | if (!icl) { | |
757 | dev_err(&client->dev, "MT9V022 driver needs platform data\n"); | |
758 | return -EINVAL; | |
759 | } | |
760 | ||
761 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { | |
762 | dev_warn(&adapter->dev, | |
763 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); | |
764 | return -EIO; | |
765 | } | |
766 | ||
767 | mt9v022 = kzalloc(sizeof(struct mt9v022), GFP_KERNEL); | |
768 | if (!mt9v022) | |
769 | return -ENOMEM; | |
770 | ||
771 | mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT; | |
772 | mt9v022->client = client; | |
773 | i2c_set_clientdata(client, mt9v022); | |
774 | ||
775 | icd = &mt9v022->icd; | |
7397bfbe GL |
776 | icd->ops = &mt9v022_ops; |
777 | icd->control = &client->dev; | |
778 | icd->x_min = 1; | |
779 | icd->y_min = 4; | |
780 | icd->x_current = 1; | |
781 | icd->y_current = 4; | |
782 | icd->width_min = 48; | |
783 | icd->width_max = 752; | |
784 | icd->height_min = 32; | |
785 | icd->height_max = 480; | |
786 | icd->y_skip_top = 1; | |
787 | icd->iface = icl->bus_id; | |
7397bfbe GL |
788 | |
789 | ret = soc_camera_device_register(icd); | |
790 | if (ret) | |
791 | goto eisdr; | |
792 | ||
793 | return 0; | |
794 | ||
795 | eisdr: | |
7397bfbe GL |
796 | kfree(mt9v022); |
797 | return ret; | |
798 | } | |
799 | ||
800 | static int mt9v022_remove(struct i2c_client *client) | |
801 | { | |
802 | struct mt9v022 *mt9v022 = i2c_get_clientdata(client); | |
803 | ||
804 | soc_camera_device_unregister(&mt9v022->icd); | |
7397bfbe GL |
805 | kfree(mt9v022); |
806 | ||
807 | return 0; | |
808 | } | |
3760f736 JD |
809 | static const struct i2c_device_id mt9v022_id[] = { |
810 | { "mt9v022", 0 }, | |
811 | { } | |
812 | }; | |
813 | MODULE_DEVICE_TABLE(i2c, mt9v022_id); | |
814 | ||
7397bfbe GL |
815 | static struct i2c_driver mt9v022_i2c_driver = { |
816 | .driver = { | |
817 | .name = "mt9v022", | |
818 | }, | |
819 | .probe = mt9v022_probe, | |
820 | .remove = mt9v022_remove, | |
3760f736 | 821 | .id_table = mt9v022_id, |
7397bfbe GL |
822 | }; |
823 | ||
824 | static int __init mt9v022_mod_init(void) | |
825 | { | |
826 | return i2c_add_driver(&mt9v022_i2c_driver); | |
827 | } | |
828 | ||
829 | static void __exit mt9v022_mod_exit(void) | |
830 | { | |
831 | i2c_del_driver(&mt9v022_i2c_driver); | |
832 | } | |
833 | ||
834 | module_init(mt9v022_mod_init); | |
835 | module_exit(mt9v022_mod_exit); | |
836 | ||
837 | MODULE_DESCRIPTION("Micron MT9V022 Camera driver"); | |
838 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | |
839 | MODULE_LICENSE("GPL"); |