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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 | ||
979ea1dd | 17 | #include <media/v4l2-subdev.h> |
7397bfbe GL |
18 | #include <media/v4l2-chip-ident.h> |
19 | #include <media/soc_camera.h> | |
20 | ||
5d28d525 GL |
21 | /* |
22 | * mt9v022 i2c address 0x48, 0x4c, 0x58, 0x5c | |
979ea1dd | 23 | * The platform has to define ctruct i2c_board_info objects and link to them |
5d28d525 GL |
24 | * from struct soc_camera_link |
25 | */ | |
7397bfbe GL |
26 | |
27 | static char *sensor_type; | |
28 | module_param(sensor_type, charp, S_IRUGO); | |
61a2d07d | 29 | MODULE_PARM_DESC(sensor_type, "Sensor type: \"colour\" or \"monochrome\""); |
7397bfbe GL |
30 | |
31 | /* mt9v022 selected register addresses */ | |
32 | #define MT9V022_CHIP_VERSION 0x00 | |
33 | #define MT9V022_COLUMN_START 0x01 | |
34 | #define MT9V022_ROW_START 0x02 | |
35 | #define MT9V022_WINDOW_HEIGHT 0x03 | |
36 | #define MT9V022_WINDOW_WIDTH 0x04 | |
37 | #define MT9V022_HORIZONTAL_BLANKING 0x05 | |
38 | #define MT9V022_VERTICAL_BLANKING 0x06 | |
39 | #define MT9V022_CHIP_CONTROL 0x07 | |
40 | #define MT9V022_SHUTTER_WIDTH1 0x08 | |
41 | #define MT9V022_SHUTTER_WIDTH2 0x09 | |
42 | #define MT9V022_SHUTTER_WIDTH_CTRL 0x0a | |
43 | #define MT9V022_TOTAL_SHUTTER_WIDTH 0x0b | |
44 | #define MT9V022_RESET 0x0c | |
45 | #define MT9V022_READ_MODE 0x0d | |
46 | #define MT9V022_MONITOR_MODE 0x0e | |
47 | #define MT9V022_PIXEL_OPERATION_MODE 0x0f | |
48 | #define MT9V022_LED_OUT_CONTROL 0x1b | |
49 | #define MT9V022_ADC_MODE_CONTROL 0x1c | |
96c75399 | 50 | #define MT9V022_ANALOG_GAIN 0x35 |
7397bfbe GL |
51 | #define MT9V022_BLACK_LEVEL_CALIB_CTRL 0x47 |
52 | #define MT9V022_PIXCLK_FV_LV 0x74 | |
53 | #define MT9V022_DIGITAL_TEST_PATTERN 0x7f | |
54 | #define MT9V022_AEC_AGC_ENABLE 0xAF | |
55 | #define MT9V022_MAX_TOTAL_SHUTTER_WIDTH 0xBD | |
56 | ||
57 | /* Progressive scan, master, defaults */ | |
58 | #define MT9V022_CHIP_CONTROL_DEFAULT 0x188 | |
59 | ||
6a6c8786 GL |
60 | #define MT9V022_MAX_WIDTH 752 |
61 | #define MT9V022_MAX_HEIGHT 480 | |
62 | #define MT9V022_MIN_WIDTH 48 | |
63 | #define MT9V022_MIN_HEIGHT 32 | |
64 | #define MT9V022_COLUMN_SKIP 1 | |
65 | #define MT9V022_ROW_SKIP 4 | |
66 | ||
760697be GL |
67 | /* MT9V022 has only one fixed colorspace per pixelcode */ |
68 | struct mt9v022_datafmt { | |
69 | enum v4l2_mbus_pixelcode code; | |
70 | enum v4l2_colorspace colorspace; | |
71 | }; | |
72 | ||
73 | /* Find a data format by a pixel code in an array */ | |
74 | static const struct mt9v022_datafmt *mt9v022_find_datafmt( | |
75 | enum v4l2_mbus_pixelcode code, const struct mt9v022_datafmt *fmt, | |
76 | int n) | |
77 | { | |
78 | int i; | |
79 | for (i = 0; i < n; i++) | |
80 | if (fmt[i].code == code) | |
81 | return fmt + i; | |
82 | ||
83 | return NULL; | |
84 | } | |
85 | ||
86 | static const struct mt9v022_datafmt mt9v022_colour_fmts[] = { | |
5d28d525 GL |
87 | /* |
88 | * Order important: first natively supported, | |
89 | * second supported with a GPIO extender | |
90 | */ | |
760697be GL |
91 | {V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB}, |
92 | {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB}, | |
bb55de3b GL |
93 | }; |
94 | ||
760697be | 95 | static const struct mt9v022_datafmt mt9v022_monochrome_fmts[] = { |
bb55de3b | 96 | /* Order important - see above */ |
760697be GL |
97 | {V4L2_MBUS_FMT_Y10_1X10, V4L2_COLORSPACE_JPEG}, |
98 | {V4L2_MBUS_FMT_GREY8_1X8, V4L2_COLORSPACE_JPEG}, | |
7397bfbe GL |
99 | }; |
100 | ||
101 | struct mt9v022 { | |
979ea1dd | 102 | struct v4l2_subdev subdev; |
6a6c8786 | 103 | struct v4l2_rect rect; /* Sensor window */ |
760697be GL |
104 | const struct mt9v022_datafmt *fmt; |
105 | const struct mt9v022_datafmt *fmts; | |
106 | int num_fmts; | |
7fb0fd05 | 107 | int model; /* V4L2_IDENT_MT9V022* codes from v4l2-chip-ident.h */ |
7397bfbe | 108 | u16 chip_control; |
32536108 | 109 | unsigned short y_skip_top; /* Lines to skip at the top */ |
7397bfbe GL |
110 | }; |
111 | ||
979ea1dd GL |
112 | static struct mt9v022 *to_mt9v022(const struct i2c_client *client) |
113 | { | |
114 | return container_of(i2c_get_clientdata(client), struct mt9v022, subdev); | |
115 | } | |
116 | ||
9538e1c2 | 117 | static int reg_read(struct i2c_client *client, const u8 reg) |
7397bfbe | 118 | { |
7397bfbe GL |
119 | s32 data = i2c_smbus_read_word_data(client, reg); |
120 | return data < 0 ? data : swab16(data); | |
121 | } | |
122 | ||
9538e1c2 | 123 | static int reg_write(struct i2c_client *client, const u8 reg, |
7397bfbe GL |
124 | const u16 data) |
125 | { | |
9538e1c2 | 126 | return i2c_smbus_write_word_data(client, reg, swab16(data)); |
7397bfbe GL |
127 | } |
128 | ||
9538e1c2 | 129 | static int reg_set(struct i2c_client *client, const u8 reg, |
7397bfbe GL |
130 | const u16 data) |
131 | { | |
132 | int ret; | |
133 | ||
9538e1c2 | 134 | ret = reg_read(client, reg); |
7397bfbe GL |
135 | if (ret < 0) |
136 | return ret; | |
9538e1c2 | 137 | return reg_write(client, reg, ret | data); |
7397bfbe GL |
138 | } |
139 | ||
9538e1c2 | 140 | static int reg_clear(struct i2c_client *client, const u8 reg, |
7397bfbe GL |
141 | const u16 data) |
142 | { | |
143 | int ret; | |
144 | ||
9538e1c2 | 145 | ret = reg_read(client, reg); |
7397bfbe GL |
146 | if (ret < 0) |
147 | return ret; | |
9538e1c2 | 148 | return reg_write(client, reg, ret & ~data); |
7397bfbe GL |
149 | } |
150 | ||
a4c56fd8 | 151 | static int mt9v022_init(struct i2c_client *client) |
7397bfbe | 152 | { |
979ea1dd | 153 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
7397bfbe GL |
154 | int ret; |
155 | ||
5d28d525 GL |
156 | /* |
157 | * Almost the default mode: master, parallel, simultaneous, and an | |
7397bfbe | 158 | * undocumented bit 0x200, which is present in table 7, but not in 8, |
5d28d525 GL |
159 | * plus snapshot mode to disable scan for now |
160 | */ | |
7397bfbe | 161 | mt9v022->chip_control |= 0x10; |
9538e1c2 | 162 | ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); |
11211641 | 163 | if (!ret) |
9538e1c2 | 164 | ret = reg_write(client, MT9V022_READ_MODE, 0x300); |
7397bfbe GL |
165 | |
166 | /* All defaults */ | |
11211641 | 167 | if (!ret) |
7397bfbe | 168 | /* AEC, AGC on */ |
9538e1c2 | 169 | ret = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x3); |
96c75399 GL |
170 | if (!ret) |
171 | ret = reg_write(client, MT9V022_ANALOG_GAIN, 16); | |
172 | if (!ret) | |
173 | ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, 480); | |
11211641 | 174 | if (!ret) |
9538e1c2 | 175 | ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480); |
11211641 | 176 | if (!ret) |
7397bfbe | 177 | /* default - auto */ |
9538e1c2 | 178 | ret = reg_clear(client, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1); |
11211641 | 179 | if (!ret) |
9538e1c2 | 180 | ret = reg_write(client, MT9V022_DIGITAL_TEST_PATTERN, 0); |
7397bfbe | 181 | |
11211641 | 182 | return ret; |
7397bfbe GL |
183 | } |
184 | ||
979ea1dd | 185 | static int mt9v022_s_stream(struct v4l2_subdev *sd, int enable) |
7397bfbe | 186 | { |
979ea1dd GL |
187 | struct i2c_client *client = sd->priv; |
188 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
81034663 | 189 | |
979ea1dd GL |
190 | if (enable) |
191 | /* Switch to master "normal" mode */ | |
192 | mt9v022->chip_control &= ~0x10; | |
193 | else | |
194 | /* Switch to snapshot mode */ | |
195 | mt9v022->chip_control |= 0x10; | |
7397bfbe | 196 | |
979ea1dd | 197 | if (reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control) < 0) |
7397bfbe GL |
198 | return -EIO; |
199 | return 0; | |
200 | } | |
201 | ||
ad5f2e85 GL |
202 | static int mt9v022_set_bus_param(struct soc_camera_device *icd, |
203 | unsigned long flags) | |
7397bfbe | 204 | { |
40e2e092 | 205 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); |
979ea1dd | 206 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
40e2e092 | 207 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
ad5f2e85 | 208 | unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK; |
7397bfbe | 209 | int ret; |
ad5f2e85 | 210 | u16 pixclk = 0; |
7397bfbe GL |
211 | |
212 | /* Only one width bit may be set */ | |
213 | if (!is_power_of_2(width_flag)) | |
214 | return -EINVAL; | |
215 | ||
e958e27a SH |
216 | if (icl->set_bus_param) { |
217 | ret = icl->set_bus_param(icl, width_flag); | |
218 | if (ret) | |
ad5f2e85 | 219 | return ret; |
e958e27a SH |
220 | } else { |
221 | /* | |
222 | * Without board specific bus width settings we only support the | |
223 | * sensors native bus width | |
224 | */ | |
225 | if (width_flag != SOCAM_DATAWIDTH_10) | |
226 | return -EINVAL; | |
ad5f2e85 GL |
227 | } |
228 | ||
bd73b36f GL |
229 | flags = soc_camera_apply_sensor_flags(icl, flags); |
230 | ||
ad5f2e85 GL |
231 | if (flags & SOCAM_PCLK_SAMPLE_RISING) |
232 | pixclk |= 0x10; | |
233 | ||
234 | if (!(flags & SOCAM_HSYNC_ACTIVE_HIGH)) | |
235 | pixclk |= 0x1; | |
236 | ||
237 | if (!(flags & SOCAM_VSYNC_ACTIVE_HIGH)) | |
238 | pixclk |= 0x2; | |
239 | ||
9538e1c2 | 240 | ret = reg_write(client, MT9V022_PIXCLK_FV_LV, pixclk); |
ad5f2e85 GL |
241 | if (ret < 0) |
242 | return ret; | |
243 | ||
244 | if (!(flags & SOCAM_MASTER)) | |
245 | mt9v022->chip_control &= ~0x8; | |
246 | ||
9538e1c2 | 247 | ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); |
ad5f2e85 GL |
248 | if (ret < 0) |
249 | return ret; | |
250 | ||
85f8be68 | 251 | dev_dbg(&client->dev, "Calculated pixclk 0x%x, chip control 0x%x\n", |
ad5f2e85 GL |
252 | pixclk, mt9v022->chip_control); |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
257 | static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd) | |
258 | { | |
40e2e092 | 259 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
e958e27a | 260 | unsigned int width_flag; |
ad5f2e85 | 261 | |
e958e27a SH |
262 | if (icl->query_bus_param) |
263 | width_flag = icl->query_bus_param(icl) & | |
264 | SOCAM_DATAWIDTH_MASK; | |
265 | else | |
266 | width_flag = SOCAM_DATAWIDTH_10; | |
ad5f2e85 GL |
267 | |
268 | return SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING | | |
269 | SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW | | |
270 | SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW | | |
2d9329f3 | 271 | SOCAM_DATA_ACTIVE_HIGH | SOCAM_MASTER | SOCAM_SLAVE | |
ad5f2e85 GL |
272 | width_flag; |
273 | } | |
274 | ||
08590b96 | 275 | static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) |
ad5f2e85 | 276 | { |
08590b96 | 277 | struct i2c_client *client = sd->priv; |
6a6c8786 GL |
278 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
279 | struct v4l2_rect rect = a->c; | |
ad5f2e85 GL |
280 | int ret; |
281 | ||
6a6c8786 | 282 | /* Bayer format - even size lengths */ |
760697be | 283 | if (mt9v022->fmts == mt9v022_colour_fmts) { |
6a6c8786 GL |
284 | rect.width = ALIGN(rect.width, 2); |
285 | rect.height = ALIGN(rect.height, 2); | |
286 | /* Let the user play with the starting pixel */ | |
287 | } | |
288 | ||
289 | soc_camera_limit_side(&rect.left, &rect.width, | |
290 | MT9V022_COLUMN_SKIP, MT9V022_MIN_WIDTH, MT9V022_MAX_WIDTH); | |
291 | ||
292 | soc_camera_limit_side(&rect.top, &rect.height, | |
293 | MT9V022_ROW_SKIP, MT9V022_MIN_HEIGHT, MT9V022_MAX_HEIGHT); | |
294 | ||
7397bfbe | 295 | /* Like in example app. Contradicts the datasheet though */ |
9538e1c2 | 296 | ret = reg_read(client, MT9V022_AEC_AGC_ENABLE); |
7397bfbe GL |
297 | if (ret >= 0) { |
298 | if (ret & 1) /* Autoexposure */ | |
9538e1c2 | 299 | ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, |
32536108 | 300 | rect.height + mt9v022->y_skip_top + 43); |
7397bfbe | 301 | else |
9538e1c2 | 302 | ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, |
32536108 | 303 | rect.height + mt9v022->y_skip_top + 43); |
7397bfbe GL |
304 | } |
305 | /* Setup frame format: defaults apart from width and height */ | |
11211641 | 306 | if (!ret) |
6a6c8786 | 307 | ret = reg_write(client, MT9V022_COLUMN_START, rect.left); |
11211641 | 308 | if (!ret) |
6a6c8786 | 309 | ret = reg_write(client, MT9V022_ROW_START, rect.top); |
11211641 | 310 | if (!ret) |
5d28d525 GL |
311 | /* |
312 | * Default 94, Phytec driver says: | |
313 | * "width + horizontal blank >= 660" | |
314 | */ | |
9538e1c2 | 315 | ret = reg_write(client, MT9V022_HORIZONTAL_BLANKING, |
6a6c8786 GL |
316 | rect.width > 660 - 43 ? 43 : |
317 | 660 - rect.width); | |
11211641 | 318 | if (!ret) |
9538e1c2 | 319 | ret = reg_write(client, MT9V022_VERTICAL_BLANKING, 45); |
11211641 | 320 | if (!ret) |
6a6c8786 | 321 | ret = reg_write(client, MT9V022_WINDOW_WIDTH, rect.width); |
11211641 | 322 | if (!ret) |
9538e1c2 | 323 | ret = reg_write(client, MT9V022_WINDOW_HEIGHT, |
32536108 | 324 | rect.height + mt9v022->y_skip_top); |
7397bfbe GL |
325 | |
326 | if (ret < 0) | |
327 | return ret; | |
328 | ||
6a6c8786 GL |
329 | dev_dbg(&client->dev, "Frame %ux%u pixel\n", rect.width, rect.height); |
330 | ||
331 | mt9v022->rect = rect; | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
336 | static int mt9v022_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) | |
337 | { | |
338 | struct i2c_client *client = sd->priv; | |
339 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
340 | ||
341 | a->c = mt9v022->rect; | |
342 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
347 | static int mt9v022_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) | |
348 | { | |
349 | a->bounds.left = MT9V022_COLUMN_SKIP; | |
350 | a->bounds.top = MT9V022_ROW_SKIP; | |
351 | a->bounds.width = MT9V022_MAX_WIDTH; | |
352 | a->bounds.height = MT9V022_MAX_HEIGHT; | |
353 | a->defrect = a->bounds; | |
354 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
355 | a->pixelaspect.numerator = 1; | |
356 | a->pixelaspect.denominator = 1; | |
357 | ||
358 | return 0; | |
359 | } | |
360 | ||
760697be GL |
361 | static int mt9v022_g_fmt(struct v4l2_subdev *sd, |
362 | struct v4l2_mbus_framefmt *mf) | |
6a6c8786 GL |
363 | { |
364 | struct i2c_client *client = sd->priv; | |
365 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
6a6c8786 | 366 | |
760697be GL |
367 | mf->width = mt9v022->rect.width; |
368 | mf->height = mt9v022->rect.height; | |
369 | mf->code = mt9v022->fmt->code; | |
370 | mf->colorspace = mt9v022->fmt->colorspace; | |
371 | mf->field = V4L2_FIELD_NONE; | |
7397bfbe | 372 | |
7397bfbe GL |
373 | return 0; |
374 | } | |
375 | ||
760697be GL |
376 | static int mt9v022_s_fmt(struct v4l2_subdev *sd, |
377 | struct v4l2_mbus_framefmt *mf) | |
09e231b3 | 378 | { |
979ea1dd GL |
379 | struct i2c_client *client = sd->priv; |
380 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
08590b96 GL |
381 | struct v4l2_crop a = { |
382 | .c = { | |
6a6c8786 GL |
383 | .left = mt9v022->rect.left, |
384 | .top = mt9v022->rect.top, | |
760697be GL |
385 | .width = mf->width, |
386 | .height = mf->height, | |
08590b96 | 387 | }, |
09e231b3 | 388 | }; |
6a6c8786 | 389 | int ret; |
09e231b3 | 390 | |
5d28d525 GL |
391 | /* |
392 | * The caller provides a supported format, as verified per call to | |
393 | * icd->try_fmt(), datawidth is from our supported format list | |
394 | */ | |
760697be GL |
395 | switch (mf->code) { |
396 | case V4L2_MBUS_FMT_GREY8_1X8: | |
397 | case V4L2_MBUS_FMT_Y10_1X10: | |
09e231b3 GL |
398 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM) |
399 | return -EINVAL; | |
400 | break; | |
760697be GL |
401 | case V4L2_MBUS_FMT_SBGGR8_1X8: |
402 | case V4L2_MBUS_FMT_SBGGR10_1X10: | |
09e231b3 GL |
403 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC) |
404 | return -EINVAL; | |
405 | break; | |
406 | case 0: | |
407 | /* No format change, only geometry */ | |
408 | break; | |
409 | default: | |
410 | return -EINVAL; | |
411 | } | |
412 | ||
413 | /* No support for scaling on this camera, just crop. */ | |
6a6c8786 GL |
414 | ret = mt9v022_s_crop(sd, &a); |
415 | if (!ret) { | |
760697be GL |
416 | mf->width = mt9v022->rect.width; |
417 | mf->height = mt9v022->rect.height; | |
418 | mt9v022->fmt = mt9v022_find_datafmt(mf->code, | |
419 | mt9v022->fmts, mt9v022->num_fmts); | |
420 | mf->colorspace = mt9v022->fmt->colorspace; | |
6a6c8786 GL |
421 | } |
422 | ||
423 | return ret; | |
09e231b3 GL |
424 | } |
425 | ||
760697be GL |
426 | static int mt9v022_try_fmt(struct v4l2_subdev *sd, |
427 | struct v4l2_mbus_framefmt *mf) | |
7397bfbe | 428 | { |
979ea1dd | 429 | struct i2c_client *client = sd->priv; |
32536108 | 430 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
760697be GL |
431 | const struct mt9v022_datafmt *fmt; |
432 | int align = mf->code == V4L2_MBUS_FMT_SBGGR8_1X8 || | |
433 | mf->code == V4L2_MBUS_FMT_SBGGR10_1X10; | |
64f5905e | 434 | |
760697be | 435 | v4l_bound_align_image(&mf->width, MT9V022_MIN_WIDTH, |
6a6c8786 | 436 | MT9V022_MAX_WIDTH, align, |
760697be | 437 | &mf->height, MT9V022_MIN_HEIGHT + mt9v022->y_skip_top, |
32536108 | 438 | MT9V022_MAX_HEIGHT + mt9v022->y_skip_top, align, 0); |
7397bfbe | 439 | |
760697be GL |
440 | fmt = mt9v022_find_datafmt(mf->code, mt9v022->fmts, |
441 | mt9v022->num_fmts); | |
442 | if (!fmt) { | |
443 | fmt = mt9v022->fmt; | |
444 | mf->code = fmt->code; | |
445 | } | |
446 | ||
447 | mf->colorspace = fmt->colorspace; | |
448 | ||
7397bfbe GL |
449 | return 0; |
450 | } | |
451 | ||
979ea1dd GL |
452 | static int mt9v022_g_chip_ident(struct v4l2_subdev *sd, |
453 | struct v4l2_dbg_chip_ident *id) | |
7397bfbe | 454 | { |
979ea1dd GL |
455 | struct i2c_client *client = sd->priv; |
456 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
7397bfbe | 457 | |
aecde8b5 | 458 | if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) |
7397bfbe GL |
459 | return -EINVAL; |
460 | ||
40e2e092 | 461 | if (id->match.addr != client->addr) |
7397bfbe GL |
462 | return -ENODEV; |
463 | ||
464 | id->ident = mt9v022->model; | |
465 | id->revision = 0; | |
466 | ||
467 | return 0; | |
468 | } | |
469 | ||
470 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
979ea1dd GL |
471 | static int mt9v022_g_register(struct v4l2_subdev *sd, |
472 | struct v4l2_dbg_register *reg) | |
7397bfbe | 473 | { |
979ea1dd | 474 | struct i2c_client *client = sd->priv; |
7397bfbe | 475 | |
aecde8b5 | 476 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
7397bfbe GL |
477 | return -EINVAL; |
478 | ||
9538e1c2 | 479 | if (reg->match.addr != client->addr) |
7397bfbe GL |
480 | return -ENODEV; |
481 | ||
aecde8b5 | 482 | reg->size = 2; |
9538e1c2 | 483 | reg->val = reg_read(client, reg->reg); |
7397bfbe GL |
484 | |
485 | if (reg->val > 0xffff) | |
486 | return -EIO; | |
487 | ||
488 | return 0; | |
489 | } | |
490 | ||
979ea1dd GL |
491 | static int mt9v022_s_register(struct v4l2_subdev *sd, |
492 | struct v4l2_dbg_register *reg) | |
7397bfbe | 493 | { |
979ea1dd | 494 | struct i2c_client *client = sd->priv; |
7397bfbe | 495 | |
aecde8b5 | 496 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
7397bfbe GL |
497 | return -EINVAL; |
498 | ||
9538e1c2 | 499 | if (reg->match.addr != client->addr) |
7397bfbe GL |
500 | return -ENODEV; |
501 | ||
9538e1c2 | 502 | if (reg_write(client, reg->reg, reg->val) < 0) |
7397bfbe GL |
503 | return -EIO; |
504 | ||
505 | return 0; | |
506 | } | |
507 | #endif | |
508 | ||
4407a463 | 509 | static const struct v4l2_queryctrl mt9v022_controls[] = { |
7397bfbe GL |
510 | { |
511 | .id = V4L2_CID_VFLIP, | |
512 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
513 | .name = "Flip Vertically", | |
514 | .minimum = 0, | |
515 | .maximum = 1, | |
516 | .step = 1, | |
517 | .default_value = 0, | |
518 | }, { | |
519 | .id = V4L2_CID_HFLIP, | |
520 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
521 | .name = "Flip Horizontally", | |
522 | .minimum = 0, | |
523 | .maximum = 1, | |
524 | .step = 1, | |
525 | .default_value = 0, | |
526 | }, { | |
527 | .id = V4L2_CID_GAIN, | |
528 | .type = V4L2_CTRL_TYPE_INTEGER, | |
529 | .name = "Analog Gain", | |
530 | .minimum = 64, | |
531 | .maximum = 127, | |
532 | .step = 1, | |
533 | .default_value = 64, | |
534 | .flags = V4L2_CTRL_FLAG_SLIDER, | |
535 | }, { | |
536 | .id = V4L2_CID_EXPOSURE, | |
537 | .type = V4L2_CTRL_TYPE_INTEGER, | |
538 | .name = "Exposure", | |
539 | .minimum = 1, | |
540 | .maximum = 255, | |
541 | .step = 1, | |
542 | .default_value = 255, | |
543 | .flags = V4L2_CTRL_FLAG_SLIDER, | |
544 | }, { | |
545 | .id = V4L2_CID_AUTOGAIN, | |
546 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
547 | .name = "Automatic Gain", | |
548 | .minimum = 0, | |
549 | .maximum = 1, | |
550 | .step = 1, | |
551 | .default_value = 1, | |
552 | }, { | |
553 | .id = V4L2_CID_EXPOSURE_AUTO, | |
554 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
555 | .name = "Automatic Exposure", | |
556 | .minimum = 0, | |
557 | .maximum = 1, | |
558 | .step = 1, | |
559 | .default_value = 1, | |
560 | } | |
561 | }; | |
562 | ||
7397bfbe | 563 | static struct soc_camera_ops mt9v022_ops = { |
ad5f2e85 GL |
564 | .set_bus_param = mt9v022_set_bus_param, |
565 | .query_bus_param = mt9v022_query_bus_param, | |
7397bfbe GL |
566 | .controls = mt9v022_controls, |
567 | .num_controls = ARRAY_SIZE(mt9v022_controls), | |
7397bfbe GL |
568 | }; |
569 | ||
979ea1dd | 570 | static int mt9v022_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
7397bfbe | 571 | { |
979ea1dd | 572 | struct i2c_client *client = sd->priv; |
96c75399 GL |
573 | const struct v4l2_queryctrl *qctrl; |
574 | unsigned long range; | |
7397bfbe GL |
575 | int data; |
576 | ||
96c75399 GL |
577 | qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id); |
578 | ||
7397bfbe GL |
579 | switch (ctrl->id) { |
580 | case V4L2_CID_VFLIP: | |
9538e1c2 | 581 | data = reg_read(client, MT9V022_READ_MODE); |
7397bfbe GL |
582 | if (data < 0) |
583 | return -EIO; | |
584 | ctrl->value = !!(data & 0x10); | |
585 | break; | |
586 | case V4L2_CID_HFLIP: | |
9538e1c2 | 587 | data = reg_read(client, MT9V022_READ_MODE); |
7397bfbe GL |
588 | if (data < 0) |
589 | return -EIO; | |
590 | ctrl->value = !!(data & 0x20); | |
591 | break; | |
592 | case V4L2_CID_EXPOSURE_AUTO: | |
9538e1c2 | 593 | data = reg_read(client, MT9V022_AEC_AGC_ENABLE); |
7397bfbe GL |
594 | if (data < 0) |
595 | return -EIO; | |
596 | ctrl->value = !!(data & 0x1); | |
597 | break; | |
598 | case V4L2_CID_AUTOGAIN: | |
9538e1c2 | 599 | data = reg_read(client, MT9V022_AEC_AGC_ENABLE); |
7397bfbe GL |
600 | if (data < 0) |
601 | return -EIO; | |
602 | ctrl->value = !!(data & 0x2); | |
96c75399 GL |
603 | break; |
604 | case V4L2_CID_GAIN: | |
605 | data = reg_read(client, MT9V022_ANALOG_GAIN); | |
606 | if (data < 0) | |
607 | return -EIO; | |
608 | ||
609 | range = qctrl->maximum - qctrl->minimum; | |
610 | ctrl->value = ((data - 16) * range + 24) / 48 + qctrl->minimum; | |
611 | ||
612 | break; | |
613 | case V4L2_CID_EXPOSURE: | |
614 | data = reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH); | |
615 | if (data < 0) | |
616 | return -EIO; | |
617 | ||
618 | range = qctrl->maximum - qctrl->minimum; | |
619 | ctrl->value = ((data - 1) * range + 239) / 479 + qctrl->minimum; | |
620 | ||
7397bfbe GL |
621 | break; |
622 | } | |
623 | return 0; | |
624 | } | |
625 | ||
979ea1dd | 626 | static int mt9v022_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
7397bfbe GL |
627 | { |
628 | int data; | |
979ea1dd | 629 | struct i2c_client *client = sd->priv; |
7397bfbe GL |
630 | const struct v4l2_queryctrl *qctrl; |
631 | ||
632 | qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id); | |
7397bfbe GL |
633 | if (!qctrl) |
634 | return -EINVAL; | |
635 | ||
636 | switch (ctrl->id) { | |
637 | case V4L2_CID_VFLIP: | |
638 | if (ctrl->value) | |
9538e1c2 | 639 | data = reg_set(client, MT9V022_READ_MODE, 0x10); |
7397bfbe | 640 | else |
9538e1c2 | 641 | data = reg_clear(client, MT9V022_READ_MODE, 0x10); |
7397bfbe GL |
642 | if (data < 0) |
643 | return -EIO; | |
644 | break; | |
645 | case V4L2_CID_HFLIP: | |
646 | if (ctrl->value) | |
9538e1c2 | 647 | data = reg_set(client, MT9V022_READ_MODE, 0x20); |
7397bfbe | 648 | else |
9538e1c2 | 649 | data = reg_clear(client, MT9V022_READ_MODE, 0x20); |
7397bfbe GL |
650 | if (data < 0) |
651 | return -EIO; | |
652 | break; | |
653 | case V4L2_CID_GAIN: | |
654 | /* mt9v022 has minimum == default */ | |
655 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) | |
656 | return -EINVAL; | |
657 | else { | |
658 | unsigned long range = qctrl->maximum - qctrl->minimum; | |
96c75399 | 659 | /* Valid values 16 to 64, 32 to 64 must be even. */ |
7397bfbe | 660 | unsigned long gain = ((ctrl->value - qctrl->minimum) * |
96c75399 | 661 | 48 + range / 2) / range + 16; |
7397bfbe GL |
662 | if (gain >= 32) |
663 | gain &= ~1; | |
5d28d525 GL |
664 | /* |
665 | * The user wants to set gain manually, hope, she | |
666 | * knows, what she's doing... Switch AGC off. | |
667 | */ | |
7397bfbe | 668 | |
9538e1c2 | 669 | if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2) < 0) |
7397bfbe GL |
670 | return -EIO; |
671 | ||
96c75399 GL |
672 | dev_dbg(&client->dev, "Setting gain from %d to %lu\n", |
673 | reg_read(client, MT9V022_ANALOG_GAIN), gain); | |
9538e1c2 | 674 | if (reg_write(client, MT9V022_ANALOG_GAIN, gain) < 0) |
7397bfbe | 675 | return -EIO; |
7397bfbe GL |
676 | } |
677 | break; | |
678 | case V4L2_CID_EXPOSURE: | |
679 | /* mt9v022 has maximum == default */ | |
680 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) | |
681 | return -EINVAL; | |
682 | else { | |
683 | unsigned long range = qctrl->maximum - qctrl->minimum; | |
684 | unsigned long shutter = ((ctrl->value - qctrl->minimum) * | |
685 | 479 + range / 2) / range + 1; | |
5d28d525 GL |
686 | /* |
687 | * The user wants to set shutter width manually, hope, | |
688 | * she knows, what she's doing... Switch AEC off. | |
689 | */ | |
7397bfbe | 690 | |
9538e1c2 | 691 | if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1) < 0) |
7397bfbe GL |
692 | return -EIO; |
693 | ||
85f8be68 | 694 | dev_dbg(&client->dev, "Shutter width from %d to %lu\n", |
9538e1c2 | 695 | reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH), |
7397bfbe | 696 | shutter); |
9538e1c2 | 697 | if (reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, |
7397bfbe GL |
698 | shutter) < 0) |
699 | return -EIO; | |
7397bfbe GL |
700 | } |
701 | break; | |
702 | case V4L2_CID_AUTOGAIN: | |
703 | if (ctrl->value) | |
9538e1c2 | 704 | data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x2); |
7397bfbe | 705 | else |
9538e1c2 | 706 | data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2); |
7397bfbe GL |
707 | if (data < 0) |
708 | return -EIO; | |
709 | break; | |
710 | case V4L2_CID_EXPOSURE_AUTO: | |
711 | if (ctrl->value) | |
9538e1c2 | 712 | data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x1); |
7397bfbe | 713 | else |
9538e1c2 | 714 | data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1); |
7397bfbe GL |
715 | if (data < 0) |
716 | return -EIO; | |
717 | break; | |
718 | } | |
719 | return 0; | |
720 | } | |
721 | ||
5d28d525 GL |
722 | /* |
723 | * Interface active, can use i2c. If it fails, it can indeed mean, that | |
724 | * this wasn't our capture interface, so, we wait for the right one | |
725 | */ | |
40e2e092 GL |
726 | static int mt9v022_video_probe(struct soc_camera_device *icd, |
727 | struct i2c_client *client) | |
7397bfbe | 728 | { |
979ea1dd | 729 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
40e2e092 | 730 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
7397bfbe GL |
731 | s32 data; |
732 | int ret; | |
e958e27a | 733 | unsigned long flags; |
7397bfbe GL |
734 | |
735 | if (!icd->dev.parent || | |
736 | to_soc_camera_host(icd->dev.parent)->nr != icd->iface) | |
737 | return -ENODEV; | |
738 | ||
739 | /* Read out the chip version register */ | |
9538e1c2 | 740 | data = reg_read(client, MT9V022_CHIP_VERSION); |
7397bfbe GL |
741 | |
742 | /* must be 0x1311 or 0x1313 */ | |
743 | if (data != 0x1311 && data != 0x1313) { | |
744 | ret = -ENODEV; | |
85f8be68 | 745 | dev_info(&client->dev, "No MT9V022 found, ID register 0x%x\n", |
7397bfbe GL |
746 | data); |
747 | goto ei2c; | |
748 | } | |
749 | ||
750 | /* Soft reset */ | |
9538e1c2 | 751 | ret = reg_write(client, MT9V022_RESET, 1); |
7397bfbe GL |
752 | if (ret < 0) |
753 | goto ei2c; | |
754 | /* 15 clock cycles */ | |
755 | udelay(200); | |
9538e1c2 | 756 | if (reg_read(client, MT9V022_RESET)) { |
85f8be68 | 757 | dev_err(&client->dev, "Resetting MT9V022 failed!\n"); |
40e2e092 GL |
758 | if (ret > 0) |
759 | ret = -EIO; | |
7397bfbe GL |
760 | goto ei2c; |
761 | } | |
762 | ||
763 | /* Set monochrome or colour sensor type */ | |
764 | if (sensor_type && (!strcmp("colour", sensor_type) || | |
765 | !strcmp("color", sensor_type))) { | |
9538e1c2 | 766 | ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11); |
7397bfbe | 767 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATC; |
760697be | 768 | mt9v022->fmts = mt9v022_colour_fmts; |
7397bfbe | 769 | } else { |
9538e1c2 | 770 | ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 0x11); |
7397bfbe | 771 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATM; |
760697be | 772 | mt9v022->fmts = mt9v022_monochrome_fmts; |
7397bfbe GL |
773 | } |
774 | ||
e958e27a | 775 | if (ret < 0) |
40e2e092 | 776 | goto ei2c; |
e958e27a | 777 | |
760697be | 778 | mt9v022->num_fmts = 0; |
e958e27a SH |
779 | |
780 | /* | |
781 | * This is a 10bit sensor, so by default we only allow 10bit. | |
782 | * The platform may support different bus widths due to | |
783 | * different routing of the data lines. | |
784 | */ | |
785 | if (icl->query_bus_param) | |
786 | flags = icl->query_bus_param(icl); | |
787 | else | |
788 | flags = SOCAM_DATAWIDTH_10; | |
789 | ||
790 | if (flags & SOCAM_DATAWIDTH_10) | |
760697be | 791 | mt9v022->num_fmts++; |
e958e27a | 792 | else |
760697be | 793 | mt9v022->fmts++; |
e958e27a SH |
794 | |
795 | if (flags & SOCAM_DATAWIDTH_8) | |
760697be | 796 | mt9v022->num_fmts++; |
e958e27a | 797 | |
760697be | 798 | mt9v022->fmt = &mt9v022->fmts[0]; |
6a6c8786 | 799 | |
85f8be68 | 800 | dev_info(&client->dev, "Detected a MT9V022 chip ID %x, %s sensor\n", |
7397bfbe GL |
801 | data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ? |
802 | "monochrome" : "colour"); | |
803 | ||
a4c56fd8 GL |
804 | ret = mt9v022_init(client); |
805 | if (ret < 0) | |
806 | dev_err(&client->dev, "Failed to initialise the camera\n"); | |
807 | ||
7397bfbe GL |
808 | ei2c: |
809 | return ret; | |
810 | } | |
811 | ||
812 | static void mt9v022_video_remove(struct soc_camera_device *icd) | |
813 | { | |
40e2e092 | 814 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
7397bfbe | 815 | |
6a6c8786 | 816 | dev_dbg(&icd->dev, "Video removed: %p, %p\n", |
a85bdace | 817 | icd->dev.parent, icd->vdev); |
594bb46d GL |
818 | if (icl->free_bus) |
819 | icl->free_bus(icl); | |
7397bfbe GL |
820 | } |
821 | ||
32536108 GL |
822 | static int mt9v022_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines) |
823 | { | |
824 | struct i2c_client *client = sd->priv; | |
825 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
826 | ||
827 | *lines = mt9v022->y_skip_top; | |
828 | ||
829 | return 0; | |
830 | } | |
831 | ||
979ea1dd GL |
832 | static struct v4l2_subdev_core_ops mt9v022_subdev_core_ops = { |
833 | .g_ctrl = mt9v022_g_ctrl, | |
834 | .s_ctrl = mt9v022_s_ctrl, | |
835 | .g_chip_ident = mt9v022_g_chip_ident, | |
836 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
837 | .g_register = mt9v022_g_register, | |
838 | .s_register = mt9v022_s_register, | |
839 | #endif | |
840 | }; | |
841 | ||
760697be GL |
842 | static int mt9v022_enum_fmt(struct v4l2_subdev *sd, int index, |
843 | enum v4l2_mbus_pixelcode *code) | |
844 | { | |
845 | struct i2c_client *client = sd->priv; | |
846 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
847 | ||
848 | if ((unsigned int)index >= mt9v022->num_fmts) | |
849 | return -EINVAL; | |
850 | ||
851 | *code = mt9v022->fmts[index].code; | |
852 | return 0; | |
853 | } | |
854 | ||
979ea1dd GL |
855 | static struct v4l2_subdev_video_ops mt9v022_subdev_video_ops = { |
856 | .s_stream = mt9v022_s_stream, | |
760697be GL |
857 | .s_mbus_fmt = mt9v022_s_fmt, |
858 | .g_mbus_fmt = mt9v022_g_fmt, | |
859 | .try_mbus_fmt = mt9v022_try_fmt, | |
08590b96 | 860 | .s_crop = mt9v022_s_crop, |
6a6c8786 GL |
861 | .g_crop = mt9v022_g_crop, |
862 | .cropcap = mt9v022_cropcap, | |
760697be | 863 | .enum_mbus_fmt = mt9v022_enum_fmt, |
979ea1dd GL |
864 | }; |
865 | ||
32536108 GL |
866 | static struct v4l2_subdev_sensor_ops mt9v022_subdev_sensor_ops = { |
867 | .g_skip_top_lines = mt9v022_g_skip_top_lines, | |
868 | }; | |
869 | ||
979ea1dd GL |
870 | static struct v4l2_subdev_ops mt9v022_subdev_ops = { |
871 | .core = &mt9v022_subdev_core_ops, | |
872 | .video = &mt9v022_subdev_video_ops, | |
32536108 | 873 | .sensor = &mt9v022_subdev_sensor_ops, |
979ea1dd GL |
874 | }; |
875 | ||
d2653e92 JD |
876 | static int mt9v022_probe(struct i2c_client *client, |
877 | const struct i2c_device_id *did) | |
7397bfbe GL |
878 | { |
879 | struct mt9v022 *mt9v022; | |
40e2e092 | 880 | struct soc_camera_device *icd = client->dev.platform_data; |
7397bfbe | 881 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); |
40e2e092 | 882 | struct soc_camera_link *icl; |
7397bfbe GL |
883 | int ret; |
884 | ||
40e2e092 GL |
885 | if (!icd) { |
886 | dev_err(&client->dev, "MT9V022: missing soc-camera data!\n"); | |
887 | return -EINVAL; | |
888 | } | |
889 | ||
890 | icl = to_soc_camera_link(icd); | |
7397bfbe GL |
891 | if (!icl) { |
892 | dev_err(&client->dev, "MT9V022 driver needs platform data\n"); | |
893 | return -EINVAL; | |
894 | } | |
895 | ||
896 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { | |
897 | dev_warn(&adapter->dev, | |
898 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); | |
899 | return -EIO; | |
900 | } | |
901 | ||
902 | mt9v022 = kzalloc(sizeof(struct mt9v022), GFP_KERNEL); | |
903 | if (!mt9v022) | |
904 | return -ENOMEM; | |
905 | ||
979ea1dd GL |
906 | v4l2_i2c_subdev_init(&mt9v022->subdev, client, &mt9v022_subdev_ops); |
907 | ||
7397bfbe | 908 | mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT; |
7397bfbe | 909 | |
a0705b07 | 910 | icd->ops = &mt9v022_ops; |
96c75399 GL |
911 | /* |
912 | * MT9V022 _really_ corrupts the first read out line. | |
913 | * TODO: verify on i.MX31 | |
914 | */ | |
32536108 | 915 | mt9v022->y_skip_top = 1; |
6a6c8786 GL |
916 | mt9v022->rect.left = MT9V022_COLUMN_SKIP; |
917 | mt9v022->rect.top = MT9V022_ROW_SKIP; | |
918 | mt9v022->rect.width = MT9V022_MAX_WIDTH; | |
919 | mt9v022->rect.height = MT9V022_MAX_HEIGHT; | |
920 | ||
40e2e092 GL |
921 | ret = mt9v022_video_probe(icd, client); |
922 | if (ret) { | |
923 | icd->ops = NULL; | |
924 | i2c_set_clientdata(client, NULL); | |
925 | kfree(mt9v022); | |
926 | } | |
7397bfbe | 927 | |
7397bfbe GL |
928 | return ret; |
929 | } | |
930 | ||
931 | static int mt9v022_remove(struct i2c_client *client) | |
932 | { | |
979ea1dd | 933 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
40e2e092 | 934 | struct soc_camera_device *icd = client->dev.platform_data; |
7397bfbe | 935 | |
40e2e092 GL |
936 | icd->ops = NULL; |
937 | mt9v022_video_remove(icd); | |
938 | i2c_set_clientdata(client, NULL); | |
939 | client->driver = NULL; | |
7397bfbe GL |
940 | kfree(mt9v022); |
941 | ||
942 | return 0; | |
943 | } | |
3760f736 JD |
944 | static const struct i2c_device_id mt9v022_id[] = { |
945 | { "mt9v022", 0 }, | |
946 | { } | |
947 | }; | |
948 | MODULE_DEVICE_TABLE(i2c, mt9v022_id); | |
949 | ||
7397bfbe GL |
950 | static struct i2c_driver mt9v022_i2c_driver = { |
951 | .driver = { | |
952 | .name = "mt9v022", | |
953 | }, | |
954 | .probe = mt9v022_probe, | |
955 | .remove = mt9v022_remove, | |
3760f736 | 956 | .id_table = mt9v022_id, |
7397bfbe GL |
957 | }; |
958 | ||
959 | static int __init mt9v022_mod_init(void) | |
960 | { | |
961 | return i2c_add_driver(&mt9v022_i2c_driver); | |
962 | } | |
963 | ||
964 | static void __exit mt9v022_mod_exit(void) | |
965 | { | |
966 | i2c_del_driver(&mt9v022_i2c_driver); | |
967 | } | |
968 | ||
969 | module_init(mt9v022_mod_init); | |
970 | module_exit(mt9v022_mod_exit); | |
971 | ||
972 | MODULE_DESCRIPTION("Micron MT9V022 Camera driver"); | |
973 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | |
974 | MODULE_LICENSE("GPL"); |