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 | ||
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 | ||
9538e1c2 | 94 | static int reg_read(struct i2c_client *client, const u8 reg) |
7397bfbe | 95 | { |
7397bfbe GL |
96 | s32 data = i2c_smbus_read_word_data(client, reg); |
97 | return data < 0 ? data : swab16(data); | |
98 | } | |
99 | ||
9538e1c2 | 100 | static int reg_write(struct i2c_client *client, const u8 reg, |
7397bfbe GL |
101 | const u16 data) |
102 | { | |
9538e1c2 | 103 | return i2c_smbus_write_word_data(client, reg, swab16(data)); |
7397bfbe GL |
104 | } |
105 | ||
9538e1c2 | 106 | static int reg_set(struct i2c_client *client, const u8 reg, |
7397bfbe GL |
107 | const u16 data) |
108 | { | |
109 | int ret; | |
110 | ||
9538e1c2 | 111 | ret = reg_read(client, reg); |
7397bfbe GL |
112 | if (ret < 0) |
113 | return ret; | |
9538e1c2 | 114 | return reg_write(client, reg, ret | data); |
7397bfbe GL |
115 | } |
116 | ||
9538e1c2 | 117 | static int reg_clear(struct i2c_client *client, const u8 reg, |
7397bfbe GL |
118 | const u16 data) |
119 | { | |
120 | int ret; | |
121 | ||
9538e1c2 | 122 | ret = reg_read(client, reg); |
7397bfbe GL |
123 | if (ret < 0) |
124 | return ret; | |
9538e1c2 | 125 | return reg_write(client, reg, ret & ~data); |
7397bfbe GL |
126 | } |
127 | ||
128 | static int mt9v022_init(struct soc_camera_device *icd) | |
129 | { | |
9538e1c2 | 130 | struct i2c_client *client = to_i2c_client(icd->control); |
7397bfbe | 131 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
9538e1c2 | 132 | struct soc_camera_link *icl = client->dev.platform_data; |
7397bfbe GL |
133 | int ret; |
134 | ||
81034663 | 135 | if (icl->power) { |
9538e1c2 | 136 | ret = icl->power(&client->dev, 1); |
81034663 SH |
137 | if (ret < 0) { |
138 | dev_err(icd->vdev->parent, | |
139 | "Platform failed to power-on the camera.\n"); | |
140 | return ret; | |
141 | } | |
142 | } | |
143 | ||
144 | /* | |
145 | * The camera could have been already on, we hard-reset it additionally, | |
146 | * if available. Soft reset is done in video_probe(). | |
147 | */ | |
148 | if (icl->reset) | |
9538e1c2 | 149 | icl->reset(&client->dev); |
81034663 | 150 | |
7397bfbe GL |
151 | /* Almost the default mode: master, parallel, simultaneous, and an |
152 | * undocumented bit 0x200, which is present in table 7, but not in 8, | |
153 | * plus snapshot mode to disable scan for now */ | |
154 | mt9v022->chip_control |= 0x10; | |
9538e1c2 | 155 | ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); |
11211641 | 156 | if (!ret) |
9538e1c2 | 157 | ret = reg_write(client, MT9V022_READ_MODE, 0x300); |
7397bfbe GL |
158 | |
159 | /* All defaults */ | |
11211641 | 160 | if (!ret) |
7397bfbe | 161 | /* AEC, AGC on */ |
9538e1c2 | 162 | ret = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x3); |
11211641 | 163 | if (!ret) |
9538e1c2 | 164 | ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480); |
11211641 | 165 | if (!ret) |
7397bfbe | 166 | /* default - auto */ |
9538e1c2 | 167 | ret = reg_clear(client, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1); |
11211641 | 168 | if (!ret) |
9538e1c2 | 169 | ret = reg_write(client, MT9V022_DIGITAL_TEST_PATTERN, 0); |
7397bfbe | 170 | |
11211641 | 171 | return ret; |
7397bfbe GL |
172 | } |
173 | ||
174 | static int mt9v022_release(struct soc_camera_device *icd) | |
175 | { | |
81034663 SH |
176 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
177 | struct soc_camera_link *icl = mt9v022->client->dev.platform_data; | |
178 | ||
179 | if (icl->power) | |
180 | icl->power(&mt9v022->client->dev, 0); | |
181 | ||
7397bfbe GL |
182 | return 0; |
183 | } | |
184 | ||
185 | static int mt9v022_start_capture(struct soc_camera_device *icd) | |
186 | { | |
9538e1c2 | 187 | struct i2c_client *client = to_i2c_client(icd->control); |
7397bfbe GL |
188 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
189 | /* Switch to master "normal" mode */ | |
190 | mt9v022->chip_control &= ~0x10; | |
9538e1c2 | 191 | if (reg_write(client, MT9V022_CHIP_CONTROL, |
7397bfbe GL |
192 | mt9v022->chip_control) < 0) |
193 | return -EIO; | |
194 | return 0; | |
195 | } | |
196 | ||
197 | static int mt9v022_stop_capture(struct soc_camera_device *icd) | |
198 | { | |
9538e1c2 | 199 | struct i2c_client *client = to_i2c_client(icd->control); |
7397bfbe GL |
200 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
201 | /* Switch to snapshot mode */ | |
202 | mt9v022->chip_control |= 0x10; | |
9538e1c2 | 203 | if (reg_write(client, MT9V022_CHIP_CONTROL, |
7397bfbe GL |
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 | 211 | { |
9538e1c2 | 212 | struct i2c_client *client = to_i2c_client(icd->control); |
7397bfbe | 213 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
9538e1c2 | 214 | struct soc_camera_link *icl = client->dev.platform_data; |
ad5f2e85 | 215 | unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK; |
7397bfbe | 216 | int ret; |
ad5f2e85 | 217 | u16 pixclk = 0; |
7397bfbe GL |
218 | |
219 | /* Only one width bit may be set */ | |
220 | if (!is_power_of_2(width_flag)) | |
221 | return -EINVAL; | |
222 | ||
e958e27a SH |
223 | if (icl->set_bus_param) { |
224 | ret = icl->set_bus_param(icl, width_flag); | |
225 | if (ret) | |
ad5f2e85 | 226 | return ret; |
e958e27a SH |
227 | } else { |
228 | /* | |
229 | * Without board specific bus width settings we only support the | |
230 | * sensors native bus width | |
231 | */ | |
232 | if (width_flag != SOCAM_DATAWIDTH_10) | |
233 | return -EINVAL; | |
ad5f2e85 GL |
234 | } |
235 | ||
bd73b36f GL |
236 | flags = soc_camera_apply_sensor_flags(icl, flags); |
237 | ||
ad5f2e85 GL |
238 | if (flags & SOCAM_PCLK_SAMPLE_RISING) |
239 | pixclk |= 0x10; | |
240 | ||
241 | if (!(flags & SOCAM_HSYNC_ACTIVE_HIGH)) | |
242 | pixclk |= 0x1; | |
243 | ||
244 | if (!(flags & SOCAM_VSYNC_ACTIVE_HIGH)) | |
245 | pixclk |= 0x2; | |
246 | ||
9538e1c2 | 247 | ret = reg_write(client, MT9V022_PIXCLK_FV_LV, pixclk); |
ad5f2e85 GL |
248 | if (ret < 0) |
249 | return ret; | |
250 | ||
251 | if (!(flags & SOCAM_MASTER)) | |
252 | mt9v022->chip_control &= ~0x8; | |
253 | ||
9538e1c2 | 254 | ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); |
ad5f2e85 GL |
255 | if (ret < 0) |
256 | return ret; | |
257 | ||
258 | dev_dbg(&icd->dev, "Calculated pixclk 0x%x, chip control 0x%x\n", | |
259 | pixclk, mt9v022->chip_control); | |
260 | ||
261 | return 0; | |
262 | } | |
263 | ||
264 | static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd) | |
265 | { | |
266 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
e958e27a SH |
267 | struct soc_camera_link *icl = mt9v022->client->dev.platform_data; |
268 | unsigned int width_flag; | |
ad5f2e85 | 269 | |
e958e27a SH |
270 | if (icl->query_bus_param) |
271 | width_flag = icl->query_bus_param(icl) & | |
272 | SOCAM_DATAWIDTH_MASK; | |
273 | else | |
274 | width_flag = SOCAM_DATAWIDTH_10; | |
ad5f2e85 GL |
275 | |
276 | return SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING | | |
277 | SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW | | |
278 | SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW | | |
2d9329f3 | 279 | SOCAM_DATA_ACTIVE_HIGH | SOCAM_MASTER | SOCAM_SLAVE | |
ad5f2e85 GL |
280 | width_flag; |
281 | } | |
282 | ||
09e231b3 GL |
283 | static int mt9v022_set_crop(struct soc_camera_device *icd, |
284 | struct v4l2_rect *rect) | |
ad5f2e85 | 285 | { |
9538e1c2 | 286 | struct i2c_client *client = to_i2c_client(icd->control); |
ad5f2e85 GL |
287 | int ret; |
288 | ||
7397bfbe | 289 | /* Like in example app. Contradicts the datasheet though */ |
9538e1c2 | 290 | ret = reg_read(client, MT9V022_AEC_AGC_ENABLE); |
7397bfbe GL |
291 | if (ret >= 0) { |
292 | if (ret & 1) /* Autoexposure */ | |
9538e1c2 | 293 | ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, |
7397bfbe GL |
294 | rect->height + icd->y_skip_top + 43); |
295 | else | |
9538e1c2 | 296 | ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, |
7397bfbe GL |
297 | rect->height + icd->y_skip_top + 43); |
298 | } | |
299 | /* Setup frame format: defaults apart from width and height */ | |
11211641 | 300 | if (!ret) |
9538e1c2 | 301 | ret = reg_write(client, MT9V022_COLUMN_START, rect->left); |
11211641 | 302 | if (!ret) |
9538e1c2 | 303 | ret = reg_write(client, MT9V022_ROW_START, rect->top); |
11211641 | 304 | if (!ret) |
7397bfbe GL |
305 | /* Default 94, Phytec driver says: |
306 | * "width + horizontal blank >= 660" */ | |
9538e1c2 | 307 | ret = reg_write(client, MT9V022_HORIZONTAL_BLANKING, |
7397bfbe GL |
308 | rect->width > 660 - 43 ? 43 : |
309 | 660 - rect->width); | |
11211641 | 310 | if (!ret) |
9538e1c2 | 311 | ret = reg_write(client, MT9V022_VERTICAL_BLANKING, 45); |
11211641 | 312 | if (!ret) |
9538e1c2 | 313 | ret = reg_write(client, MT9V022_WINDOW_WIDTH, rect->width); |
11211641 | 314 | if (!ret) |
9538e1c2 | 315 | ret = reg_write(client, MT9V022_WINDOW_HEIGHT, |
7397bfbe GL |
316 | rect->height + icd->y_skip_top); |
317 | ||
318 | if (ret < 0) | |
319 | return ret; | |
320 | ||
321 | dev_dbg(&icd->dev, "Frame %ux%u pixel\n", rect->width, rect->height); | |
322 | ||
7397bfbe GL |
323 | return 0; |
324 | } | |
325 | ||
09e231b3 GL |
326 | static int mt9v022_set_fmt(struct soc_camera_device *icd, |
327 | struct v4l2_format *f) | |
328 | { | |
329 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
330 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
331 | struct v4l2_rect rect = { | |
332 | .left = icd->x_current, | |
333 | .top = icd->y_current, | |
334 | .width = pix->width, | |
335 | .height = pix->height, | |
336 | }; | |
337 | ||
338 | /* The caller provides a supported format, as verified per call to | |
339 | * icd->try_fmt(), datawidth is from our supported format list */ | |
340 | switch (pix->pixelformat) { | |
341 | case V4L2_PIX_FMT_GREY: | |
342 | case V4L2_PIX_FMT_Y16: | |
343 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM) | |
344 | return -EINVAL; | |
345 | break; | |
346 | case V4L2_PIX_FMT_SBGGR8: | |
347 | case V4L2_PIX_FMT_SBGGR16: | |
348 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC) | |
349 | return -EINVAL; | |
350 | break; | |
351 | case 0: | |
352 | /* No format change, only geometry */ | |
353 | break; | |
354 | default: | |
355 | return -EINVAL; | |
356 | } | |
357 | ||
358 | /* No support for scaling on this camera, just crop. */ | |
359 | return mt9v022_set_crop(icd, &rect); | |
360 | } | |
361 | ||
d8fac217 GL |
362 | static int mt9v022_try_fmt(struct soc_camera_device *icd, |
363 | struct v4l2_format *f) | |
7397bfbe | 364 | { |
64f5905e GL |
365 | struct v4l2_pix_format *pix = &f->fmt.pix; |
366 | ||
653dc59b TP |
367 | v4l_bound_align_image(&pix->width, 48, 752, 2 /* ? */, |
368 | &pix->height, 32 + icd->y_skip_top, | |
369 | 480 + icd->y_skip_top, 0, 0); | |
7397bfbe GL |
370 | |
371 | return 0; | |
372 | } | |
373 | ||
374 | static int mt9v022_get_chip_id(struct soc_camera_device *icd, | |
aecde8b5 | 375 | struct v4l2_dbg_chip_ident *id) |
7397bfbe GL |
376 | { |
377 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
378 | ||
aecde8b5 | 379 | if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) |
7397bfbe GL |
380 | return -EINVAL; |
381 | ||
aecde8b5 | 382 | if (id->match.addr != mt9v022->client->addr) |
7397bfbe GL |
383 | return -ENODEV; |
384 | ||
385 | id->ident = mt9v022->model; | |
386 | id->revision = 0; | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
391 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
392 | static int mt9v022_get_register(struct soc_camera_device *icd, | |
aecde8b5 | 393 | struct v4l2_dbg_register *reg) |
7397bfbe | 394 | { |
9538e1c2 | 395 | struct i2c_client *client = to_i2c_client(icd->control); |
7397bfbe | 396 | |
aecde8b5 | 397 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
7397bfbe GL |
398 | return -EINVAL; |
399 | ||
9538e1c2 | 400 | if (reg->match.addr != client->addr) |
7397bfbe GL |
401 | return -ENODEV; |
402 | ||
aecde8b5 | 403 | reg->size = 2; |
9538e1c2 | 404 | reg->val = reg_read(client, reg->reg); |
7397bfbe GL |
405 | |
406 | if (reg->val > 0xffff) | |
407 | return -EIO; | |
408 | ||
409 | return 0; | |
410 | } | |
411 | ||
412 | static int mt9v022_set_register(struct soc_camera_device *icd, | |
aecde8b5 | 413 | struct v4l2_dbg_register *reg) |
7397bfbe | 414 | { |
9538e1c2 | 415 | struct i2c_client *client = to_i2c_client(icd->control); |
7397bfbe | 416 | |
aecde8b5 | 417 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
7397bfbe GL |
418 | return -EINVAL; |
419 | ||
9538e1c2 | 420 | if (reg->match.addr != client->addr) |
7397bfbe GL |
421 | return -ENODEV; |
422 | ||
9538e1c2 | 423 | if (reg_write(client, reg->reg, reg->val) < 0) |
7397bfbe GL |
424 | return -EIO; |
425 | ||
426 | return 0; | |
427 | } | |
428 | #endif | |
429 | ||
4407a463 | 430 | static const struct v4l2_queryctrl mt9v022_controls[] = { |
7397bfbe GL |
431 | { |
432 | .id = V4L2_CID_VFLIP, | |
433 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
434 | .name = "Flip Vertically", | |
435 | .minimum = 0, | |
436 | .maximum = 1, | |
437 | .step = 1, | |
438 | .default_value = 0, | |
439 | }, { | |
440 | .id = V4L2_CID_HFLIP, | |
441 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
442 | .name = "Flip Horizontally", | |
443 | .minimum = 0, | |
444 | .maximum = 1, | |
445 | .step = 1, | |
446 | .default_value = 0, | |
447 | }, { | |
448 | .id = V4L2_CID_GAIN, | |
449 | .type = V4L2_CTRL_TYPE_INTEGER, | |
450 | .name = "Analog Gain", | |
451 | .minimum = 64, | |
452 | .maximum = 127, | |
453 | .step = 1, | |
454 | .default_value = 64, | |
455 | .flags = V4L2_CTRL_FLAG_SLIDER, | |
456 | }, { | |
457 | .id = V4L2_CID_EXPOSURE, | |
458 | .type = V4L2_CTRL_TYPE_INTEGER, | |
459 | .name = "Exposure", | |
460 | .minimum = 1, | |
461 | .maximum = 255, | |
462 | .step = 1, | |
463 | .default_value = 255, | |
464 | .flags = V4L2_CTRL_FLAG_SLIDER, | |
465 | }, { | |
466 | .id = V4L2_CID_AUTOGAIN, | |
467 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
468 | .name = "Automatic Gain", | |
469 | .minimum = 0, | |
470 | .maximum = 1, | |
471 | .step = 1, | |
472 | .default_value = 1, | |
473 | }, { | |
474 | .id = V4L2_CID_EXPOSURE_AUTO, | |
475 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
476 | .name = "Automatic Exposure", | |
477 | .minimum = 0, | |
478 | .maximum = 1, | |
479 | .step = 1, | |
480 | .default_value = 1, | |
481 | } | |
482 | }; | |
483 | ||
26f1b942 GL |
484 | static int mt9v022_video_probe(struct soc_camera_device *); |
485 | static void mt9v022_video_remove(struct soc_camera_device *); | |
486 | static int mt9v022_get_control(struct soc_camera_device *, struct v4l2_control *); | |
487 | static int mt9v022_set_control(struct soc_camera_device *, struct v4l2_control *); | |
7397bfbe GL |
488 | |
489 | static struct soc_camera_ops mt9v022_ops = { | |
490 | .owner = THIS_MODULE, | |
26f1b942 GL |
491 | .probe = mt9v022_video_probe, |
492 | .remove = mt9v022_video_remove, | |
7397bfbe GL |
493 | .init = mt9v022_init, |
494 | .release = mt9v022_release, | |
495 | .start_capture = mt9v022_start_capture, | |
496 | .stop_capture = mt9v022_stop_capture, | |
09e231b3 | 497 | .set_crop = mt9v022_set_crop, |
d8fac217 GL |
498 | .set_fmt = mt9v022_set_fmt, |
499 | .try_fmt = mt9v022_try_fmt, | |
ad5f2e85 GL |
500 | .set_bus_param = mt9v022_set_bus_param, |
501 | .query_bus_param = mt9v022_query_bus_param, | |
7397bfbe GL |
502 | .controls = mt9v022_controls, |
503 | .num_controls = ARRAY_SIZE(mt9v022_controls), | |
504 | .get_control = mt9v022_get_control, | |
505 | .set_control = mt9v022_set_control, | |
506 | .get_chip_id = mt9v022_get_chip_id, | |
507 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
508 | .get_register = mt9v022_get_register, | |
509 | .set_register = mt9v022_set_register, | |
510 | #endif | |
511 | }; | |
512 | ||
513 | static int mt9v022_get_control(struct soc_camera_device *icd, | |
514 | struct v4l2_control *ctrl) | |
515 | { | |
9538e1c2 | 516 | struct i2c_client *client = to_i2c_client(icd->control); |
7397bfbe GL |
517 | int data; |
518 | ||
519 | switch (ctrl->id) { | |
520 | case V4L2_CID_VFLIP: | |
9538e1c2 | 521 | data = reg_read(client, MT9V022_READ_MODE); |
7397bfbe GL |
522 | if (data < 0) |
523 | return -EIO; | |
524 | ctrl->value = !!(data & 0x10); | |
525 | break; | |
526 | case V4L2_CID_HFLIP: | |
9538e1c2 | 527 | data = reg_read(client, MT9V022_READ_MODE); |
7397bfbe GL |
528 | if (data < 0) |
529 | return -EIO; | |
530 | ctrl->value = !!(data & 0x20); | |
531 | break; | |
532 | case V4L2_CID_EXPOSURE_AUTO: | |
9538e1c2 | 533 | data = reg_read(client, MT9V022_AEC_AGC_ENABLE); |
7397bfbe GL |
534 | if (data < 0) |
535 | return -EIO; | |
536 | ctrl->value = !!(data & 0x1); | |
537 | break; | |
538 | case V4L2_CID_AUTOGAIN: | |
9538e1c2 | 539 | data = reg_read(client, MT9V022_AEC_AGC_ENABLE); |
7397bfbe GL |
540 | if (data < 0) |
541 | return -EIO; | |
542 | ctrl->value = !!(data & 0x2); | |
543 | break; | |
544 | } | |
545 | return 0; | |
546 | } | |
547 | ||
548 | static int mt9v022_set_control(struct soc_camera_device *icd, | |
549 | struct v4l2_control *ctrl) | |
550 | { | |
551 | int data; | |
9538e1c2 | 552 | struct i2c_client *client = to_i2c_client(icd->control); |
7397bfbe GL |
553 | const struct v4l2_queryctrl *qctrl; |
554 | ||
555 | qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id); | |
556 | ||
557 | if (!qctrl) | |
558 | return -EINVAL; | |
559 | ||
560 | switch (ctrl->id) { | |
561 | case V4L2_CID_VFLIP: | |
562 | if (ctrl->value) | |
9538e1c2 | 563 | data = reg_set(client, MT9V022_READ_MODE, 0x10); |
7397bfbe | 564 | else |
9538e1c2 | 565 | data = reg_clear(client, MT9V022_READ_MODE, 0x10); |
7397bfbe GL |
566 | if (data < 0) |
567 | return -EIO; | |
568 | break; | |
569 | case V4L2_CID_HFLIP: | |
570 | if (ctrl->value) | |
9538e1c2 | 571 | data = reg_set(client, MT9V022_READ_MODE, 0x20); |
7397bfbe | 572 | else |
9538e1c2 | 573 | data = reg_clear(client, MT9V022_READ_MODE, 0x20); |
7397bfbe GL |
574 | if (data < 0) |
575 | return -EIO; | |
576 | break; | |
577 | case V4L2_CID_GAIN: | |
578 | /* mt9v022 has minimum == default */ | |
579 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) | |
580 | return -EINVAL; | |
581 | else { | |
582 | unsigned long range = qctrl->maximum - qctrl->minimum; | |
583 | /* Datasheet says 16 to 64. autogain only works properly | |
584 | * after setting gain to maximum 14. Larger values | |
585 | * produce "white fly" noise effect. On the whole, | |
586 | * manually setting analog gain does no good. */ | |
587 | unsigned long gain = ((ctrl->value - qctrl->minimum) * | |
588 | 10 + range / 2) / range + 4; | |
589 | if (gain >= 32) | |
590 | gain &= ~1; | |
591 | /* The user wants to set gain manually, hope, she | |
592 | * knows, what she's doing... Switch AGC off. */ | |
593 | ||
9538e1c2 | 594 | if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2) < 0) |
7397bfbe GL |
595 | return -EIO; |
596 | ||
597 | dev_info(&icd->dev, "Setting gain from %d to %lu\n", | |
9538e1c2 GL |
598 | reg_read(client, MT9V022_ANALOG_GAIN), gain); |
599 | if (reg_write(client, MT9V022_ANALOG_GAIN, gain) < 0) | |
7397bfbe GL |
600 | return -EIO; |
601 | icd->gain = ctrl->value; | |
602 | } | |
603 | break; | |
604 | case V4L2_CID_EXPOSURE: | |
605 | /* mt9v022 has maximum == default */ | |
606 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) | |
607 | return -EINVAL; | |
608 | else { | |
609 | unsigned long range = qctrl->maximum - qctrl->minimum; | |
610 | unsigned long shutter = ((ctrl->value - qctrl->minimum) * | |
611 | 479 + range / 2) / range + 1; | |
612 | /* The user wants to set shutter width manually, hope, | |
613 | * she knows, what she's doing... Switch AEC off. */ | |
614 | ||
9538e1c2 | 615 | if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1) < 0) |
7397bfbe GL |
616 | return -EIO; |
617 | ||
618 | dev_dbg(&icd->dev, "Shutter width from %d to %lu\n", | |
9538e1c2 | 619 | reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH), |
7397bfbe | 620 | shutter); |
9538e1c2 | 621 | if (reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, |
7397bfbe GL |
622 | shutter) < 0) |
623 | return -EIO; | |
624 | icd->exposure = ctrl->value; | |
625 | } | |
626 | break; | |
627 | case V4L2_CID_AUTOGAIN: | |
628 | if (ctrl->value) | |
9538e1c2 | 629 | data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x2); |
7397bfbe | 630 | else |
9538e1c2 | 631 | data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2); |
7397bfbe GL |
632 | if (data < 0) |
633 | return -EIO; | |
634 | break; | |
635 | case V4L2_CID_EXPOSURE_AUTO: | |
636 | if (ctrl->value) | |
9538e1c2 | 637 | data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x1); |
7397bfbe | 638 | else |
9538e1c2 | 639 | data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1); |
7397bfbe GL |
640 | if (data < 0) |
641 | return -EIO; | |
642 | break; | |
643 | } | |
644 | return 0; | |
645 | } | |
646 | ||
647 | /* Interface active, can use i2c. If it fails, it can indeed mean, that | |
648 | * this wasn't our capture interface, so, we wait for the right one */ | |
649 | static int mt9v022_video_probe(struct soc_camera_device *icd) | |
650 | { | |
9538e1c2 | 651 | struct i2c_client *client = to_i2c_client(icd->control); |
7397bfbe | 652 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
9538e1c2 | 653 | struct soc_camera_link *icl = client->dev.platform_data; |
7397bfbe GL |
654 | s32 data; |
655 | int ret; | |
e958e27a | 656 | unsigned long flags; |
7397bfbe GL |
657 | |
658 | if (!icd->dev.parent || | |
659 | to_soc_camera_host(icd->dev.parent)->nr != icd->iface) | |
660 | return -ENODEV; | |
661 | ||
662 | /* Read out the chip version register */ | |
9538e1c2 | 663 | data = reg_read(client, MT9V022_CHIP_VERSION); |
7397bfbe GL |
664 | |
665 | /* must be 0x1311 or 0x1313 */ | |
666 | if (data != 0x1311 && data != 0x1313) { | |
667 | ret = -ENODEV; | |
668 | dev_info(&icd->dev, "No MT9V022 detected, ID register 0x%x\n", | |
669 | data); | |
670 | goto ei2c; | |
671 | } | |
672 | ||
673 | /* Soft reset */ | |
9538e1c2 | 674 | ret = reg_write(client, MT9V022_RESET, 1); |
7397bfbe GL |
675 | if (ret < 0) |
676 | goto ei2c; | |
677 | /* 15 clock cycles */ | |
678 | udelay(200); | |
9538e1c2 | 679 | if (reg_read(client, MT9V022_RESET)) { |
7397bfbe GL |
680 | dev_err(&icd->dev, "Resetting MT9V022 failed!\n"); |
681 | goto ei2c; | |
682 | } | |
683 | ||
684 | /* Set monochrome or colour sensor type */ | |
685 | if (sensor_type && (!strcmp("colour", sensor_type) || | |
686 | !strcmp("color", sensor_type))) { | |
9538e1c2 | 687 | ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11); |
7397bfbe | 688 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATC; |
26f1b942 | 689 | icd->formats = mt9v022_colour_formats; |
7397bfbe | 690 | } else { |
9538e1c2 | 691 | ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 0x11); |
7397bfbe | 692 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATM; |
26f1b942 | 693 | icd->formats = mt9v022_monochrome_formats; |
7397bfbe GL |
694 | } |
695 | ||
e958e27a SH |
696 | if (ret < 0) |
697 | goto eisis; | |
698 | ||
699 | icd->num_formats = 0; | |
700 | ||
701 | /* | |
702 | * This is a 10bit sensor, so by default we only allow 10bit. | |
703 | * The platform may support different bus widths due to | |
704 | * different routing of the data lines. | |
705 | */ | |
706 | if (icl->query_bus_param) | |
707 | flags = icl->query_bus_param(icl); | |
708 | else | |
709 | flags = SOCAM_DATAWIDTH_10; | |
710 | ||
711 | if (flags & SOCAM_DATAWIDTH_10) | |
712 | icd->num_formats++; | |
713 | else | |
714 | icd->formats++; | |
715 | ||
716 | if (flags & SOCAM_DATAWIDTH_8) | |
717 | icd->num_formats++; | |
718 | ||
719 | ret = soc_camera_video_start(icd); | |
7397bfbe GL |
720 | if (ret < 0) |
721 | goto eisis; | |
722 | ||
723 | dev_info(&icd->dev, "Detected a MT9V022 chip ID %x, %s sensor\n", | |
724 | data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ? | |
725 | "monochrome" : "colour"); | |
726 | ||
727 | return 0; | |
728 | ||
729 | eisis: | |
730 | ei2c: | |
731 | return ret; | |
732 | } | |
733 | ||
734 | static void mt9v022_video_remove(struct soc_camera_device *icd) | |
735 | { | |
736 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); | |
594bb46d | 737 | struct soc_camera_link *icl = mt9v022->client->dev.platform_data; |
7397bfbe GL |
738 | |
739 | dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9v022->client->addr, | |
a85bdace GL |
740 | icd->dev.parent, icd->vdev); |
741 | soc_camera_video_stop(icd); | |
594bb46d GL |
742 | if (icl->free_bus) |
743 | icl->free_bus(icl); | |
7397bfbe GL |
744 | } |
745 | ||
d2653e92 JD |
746 | static int mt9v022_probe(struct i2c_client *client, |
747 | const struct i2c_device_id *did) | |
7397bfbe GL |
748 | { |
749 | struct mt9v022 *mt9v022; | |
750 | struct soc_camera_device *icd; | |
751 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); | |
752 | struct soc_camera_link *icl = client->dev.platform_data; | |
753 | int ret; | |
754 | ||
755 | if (!icl) { | |
756 | dev_err(&client->dev, "MT9V022 driver needs platform data\n"); | |
757 | return -EINVAL; | |
758 | } | |
759 | ||
760 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { | |
761 | dev_warn(&adapter->dev, | |
762 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); | |
763 | return -EIO; | |
764 | } | |
765 | ||
766 | mt9v022 = kzalloc(sizeof(struct mt9v022), GFP_KERNEL); | |
767 | if (!mt9v022) | |
768 | return -ENOMEM; | |
769 | ||
770 | mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT; | |
771 | mt9v022->client = client; | |
772 | i2c_set_clientdata(client, mt9v022); | |
773 | ||
774 | icd = &mt9v022->icd; | |
7397bfbe GL |
775 | icd->ops = &mt9v022_ops; |
776 | icd->control = &client->dev; | |
777 | icd->x_min = 1; | |
778 | icd->y_min = 4; | |
779 | icd->x_current = 1; | |
780 | icd->y_current = 4; | |
781 | icd->width_min = 48; | |
782 | icd->width_max = 752; | |
783 | icd->height_min = 32; | |
784 | icd->height_max = 480; | |
785 | icd->y_skip_top = 1; | |
786 | icd->iface = icl->bus_id; | |
7397bfbe GL |
787 | |
788 | ret = soc_camera_device_register(icd); | |
789 | if (ret) | |
790 | goto eisdr; | |
791 | ||
792 | return 0; | |
793 | ||
794 | eisdr: | |
7397bfbe GL |
795 | kfree(mt9v022); |
796 | return ret; | |
797 | } | |
798 | ||
799 | static int mt9v022_remove(struct i2c_client *client) | |
800 | { | |
801 | struct mt9v022 *mt9v022 = i2c_get_clientdata(client); | |
802 | ||
803 | soc_camera_device_unregister(&mt9v022->icd); | |
7397bfbe GL |
804 | kfree(mt9v022); |
805 | ||
806 | return 0; | |
807 | } | |
3760f736 JD |
808 | static const struct i2c_device_id mt9v022_id[] = { |
809 | { "mt9v022", 0 }, | |
810 | { } | |
811 | }; | |
812 | MODULE_DEVICE_TABLE(i2c, mt9v022_id); | |
813 | ||
7397bfbe GL |
814 | static struct i2c_driver mt9v022_i2c_driver = { |
815 | .driver = { | |
816 | .name = "mt9v022", | |
817 | }, | |
818 | .probe = mt9v022_probe, | |
819 | .remove = mt9v022_remove, | |
3760f736 | 820 | .id_table = mt9v022_id, |
7397bfbe GL |
821 | }; |
822 | ||
823 | static int __init mt9v022_mod_init(void) | |
824 | { | |
825 | return i2c_add_driver(&mt9v022_i2c_driver); | |
826 | } | |
827 | ||
828 | static void __exit mt9v022_mod_exit(void) | |
829 | { | |
830 | i2c_del_driver(&mt9v022_i2c_driver); | |
831 | } | |
832 | ||
833 | module_init(mt9v022_mod_init); | |
834 | module_exit(mt9v022_mod_exit); | |
835 | ||
836 | MODULE_DESCRIPTION("Micron MT9V022 Camera driver"); | |
837 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | |
838 | MODULE_LICENSE("GPL"); |