diff options
author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
---|---|---|
committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /drivers/media/video/mt9v022.c | |
parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) |
Diffstat (limited to 'drivers/media/video/mt9v022.c')
-rw-r--r-- | drivers/media/video/mt9v022.c | 967 |
1 files changed, 967 insertions, 0 deletions
diff --git a/drivers/media/video/mt9v022.c b/drivers/media/video/mt9v022.c new file mode 100644 index 00000000000..51b0fccbfe7 --- /dev/null +++ b/drivers/media/video/mt9v022.c | |||
@@ -0,0 +1,967 @@ | |||
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-subdev.h> | ||
18 | #include <media/v4l2-chip-ident.h> | ||
19 | #include <media/soc_camera.h> | ||
20 | |||
21 | /* | ||
22 | * mt9v022 i2c address 0x48, 0x4c, 0x58, 0x5c | ||
23 | * The platform has to define ctruct i2c_board_info objects and link to them | ||
24 | * from struct soc_camera_link | ||
25 | */ | ||
26 | |||
27 | static char *sensor_type; | ||
28 | module_param(sensor_type, charp, S_IRUGO); | ||
29 | MODULE_PARM_DESC(sensor_type, "Sensor type: \"colour\" or \"monochrome\""); | ||
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 | ||
50 | #define MT9V022_ANALOG_GAIN 0x35 | ||
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 | |||
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 | |||
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[] = { | ||
87 | /* | ||
88 | * Order important: first natively supported, | ||
89 | * second supported with a GPIO extender | ||
90 | */ | ||
91 | {V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB}, | ||
92 | {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB}, | ||
93 | }; | ||
94 | |||
95 | static const struct mt9v022_datafmt mt9v022_monochrome_fmts[] = { | ||
96 | /* Order important - see above */ | ||
97 | {V4L2_MBUS_FMT_Y10_1X10, V4L2_COLORSPACE_JPEG}, | ||
98 | {V4L2_MBUS_FMT_Y8_1X8, V4L2_COLORSPACE_JPEG}, | ||
99 | }; | ||
100 | |||
101 | struct mt9v022 { | ||
102 | struct v4l2_subdev subdev; | ||
103 | struct v4l2_rect rect; /* Sensor window */ | ||
104 | const struct mt9v022_datafmt *fmt; | ||
105 | const struct mt9v022_datafmt *fmts; | ||
106 | int num_fmts; | ||
107 | int model; /* V4L2_IDENT_MT9V022* codes from v4l2-chip-ident.h */ | ||
108 | u16 chip_control; | ||
109 | unsigned short y_skip_top; /* Lines to skip at the top */ | ||
110 | }; | ||
111 | |||
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 | |||
117 | static int reg_read(struct i2c_client *client, const u8 reg) | ||
118 | { | ||
119 | s32 data = i2c_smbus_read_word_data(client, reg); | ||
120 | return data < 0 ? data : swab16(data); | ||
121 | } | ||
122 | |||
123 | static int reg_write(struct i2c_client *client, const u8 reg, | ||
124 | const u16 data) | ||
125 | { | ||
126 | return i2c_smbus_write_word_data(client, reg, swab16(data)); | ||
127 | } | ||
128 | |||
129 | static int reg_set(struct i2c_client *client, const u8 reg, | ||
130 | const u16 data) | ||
131 | { | ||
132 | int ret; | ||
133 | |||
134 | ret = reg_read(client, reg); | ||
135 | if (ret < 0) | ||
136 | return ret; | ||
137 | return reg_write(client, reg, ret | data); | ||
138 | } | ||
139 | |||
140 | static int reg_clear(struct i2c_client *client, const u8 reg, | ||
141 | const u16 data) | ||
142 | { | ||
143 | int ret; | ||
144 | |||
145 | ret = reg_read(client, reg); | ||
146 | if (ret < 0) | ||
147 | return ret; | ||
148 | return reg_write(client, reg, ret & ~data); | ||
149 | } | ||
150 | |||
151 | static int mt9v022_init(struct i2c_client *client) | ||
152 | { | ||
153 | struct mt9v022 *mt9v022 = to_mt9v022(client); | ||
154 | int ret; | ||
155 | |||
156 | /* | ||
157 | * Almost the default mode: master, parallel, simultaneous, and an | ||
158 | * undocumented bit 0x200, which is present in table 7, but not in 8, | ||
159 | * plus snapshot mode to disable scan for now | ||
160 | */ | ||
161 | mt9v022->chip_control |= 0x10; | ||
162 | ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); | ||
163 | if (!ret) | ||
164 | ret = reg_write(client, MT9V022_READ_MODE, 0x300); | ||
165 | |||
166 | /* All defaults */ | ||
167 | if (!ret) | ||
168 | /* AEC, AGC on */ | ||
169 | ret = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x3); | ||
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); | ||
174 | if (!ret) | ||
175 | ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480); | ||
176 | if (!ret) | ||
177 | /* default - auto */ | ||
178 | ret = reg_clear(client, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1); | ||
179 | if (!ret) | ||
180 | ret = reg_write(client, MT9V022_DIGITAL_TEST_PATTERN, 0); | ||
181 | |||
182 | return ret; | ||
183 | } | ||
184 | |||
185 | static int mt9v022_s_stream(struct v4l2_subdev *sd, int enable) | ||
186 | { | ||
187 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
188 | struct mt9v022 *mt9v022 = to_mt9v022(client); | ||
189 | |||
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; | ||
196 | |||
197 | if (reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control) < 0) | ||
198 | return -EIO; | ||
199 | return 0; | ||
200 | } | ||
201 | |||
202 | static int mt9v022_set_bus_param(struct soc_camera_device *icd, | ||
203 | unsigned long flags) | ||
204 | { | ||
205 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); | ||
206 | struct mt9v022 *mt9v022 = to_mt9v022(client); | ||
207 | struct soc_camera_link *icl = to_soc_camera_link(icd); | ||
208 | unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK; | ||
209 | int ret; | ||
210 | u16 pixclk = 0; | ||
211 | |||
212 | /* Only one width bit may be set */ | ||
213 | if (!is_power_of_2(width_flag)) | ||
214 | return -EINVAL; | ||
215 | |||
216 | if (icl->set_bus_param) { | ||
217 | ret = icl->set_bus_param(icl, width_flag); | ||
218 | if (ret) | ||
219 | return ret; | ||
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; | ||
227 | } | ||
228 | |||
229 | flags = soc_camera_apply_sensor_flags(icl, flags); | ||
230 | |||
231 | if (flags & SOCAM_PCLK_SAMPLE_FALLING) | ||
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 | |||
240 | ret = reg_write(client, MT9V022_PIXCLK_FV_LV, pixclk); | ||
241 | if (ret < 0) | ||
242 | return ret; | ||
243 | |||
244 | if (!(flags & SOCAM_MASTER)) | ||
245 | mt9v022->chip_control &= ~0x8; | ||
246 | |||
247 | ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); | ||
248 | if (ret < 0) | ||
249 | return ret; | ||
250 | |||
251 | dev_dbg(&client->dev, "Calculated pixclk 0x%x, chip control 0x%x\n", | ||
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 | { | ||
259 | struct soc_camera_link *icl = to_soc_camera_link(icd); | ||
260 | unsigned int flags = SOCAM_MASTER | SOCAM_SLAVE | | ||
261 | SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING | | ||
262 | SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW | | ||
263 | SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW | | ||
264 | SOCAM_DATA_ACTIVE_HIGH; | ||
265 | |||
266 | if (icl->query_bus_param) | ||
267 | flags |= icl->query_bus_param(icl) & SOCAM_DATAWIDTH_MASK; | ||
268 | else | ||
269 | flags |= SOCAM_DATAWIDTH_10; | ||
270 | |||
271 | return soc_camera_apply_sensor_flags(icl, flags); | ||
272 | } | ||
273 | |||
274 | static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) | ||
275 | { | ||
276 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
277 | struct mt9v022 *mt9v022 = to_mt9v022(client); | ||
278 | struct v4l2_rect rect = a->c; | ||
279 | int ret; | ||
280 | |||
281 | /* Bayer format - even size lengths */ | ||
282 | if (mt9v022->fmts == mt9v022_colour_fmts) { | ||
283 | rect.width = ALIGN(rect.width, 2); | ||
284 | rect.height = ALIGN(rect.height, 2); | ||
285 | /* Let the user play with the starting pixel */ | ||
286 | } | ||
287 | |||
288 | soc_camera_limit_side(&rect.left, &rect.width, | ||
289 | MT9V022_COLUMN_SKIP, MT9V022_MIN_WIDTH, MT9V022_MAX_WIDTH); | ||
290 | |||
291 | soc_camera_limit_side(&rect.top, &rect.height, | ||
292 | MT9V022_ROW_SKIP, MT9V022_MIN_HEIGHT, MT9V022_MAX_HEIGHT); | ||
293 | |||
294 | /* Like in example app. Contradicts the datasheet though */ | ||
295 | ret = reg_read(client, MT9V022_AEC_AGC_ENABLE); | ||
296 | if (ret >= 0) { | ||
297 | if (ret & 1) /* Autoexposure */ | ||
298 | ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, | ||
299 | rect.height + mt9v022->y_skip_top + 43); | ||
300 | else | ||
301 | ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, | ||
302 | rect.height + mt9v022->y_skip_top + 43); | ||
303 | } | ||
304 | /* Setup frame format: defaults apart from width and height */ | ||
305 | if (!ret) | ||
306 | ret = reg_write(client, MT9V022_COLUMN_START, rect.left); | ||
307 | if (!ret) | ||
308 | ret = reg_write(client, MT9V022_ROW_START, rect.top); | ||
309 | if (!ret) | ||
310 | /* | ||
311 | * Default 94, Phytec driver says: | ||
312 | * "width + horizontal blank >= 660" | ||
313 | */ | ||
314 | ret = reg_write(client, MT9V022_HORIZONTAL_BLANKING, | ||
315 | rect.width > 660 - 43 ? 43 : | ||
316 | 660 - rect.width); | ||
317 | if (!ret) | ||
318 | ret = reg_write(client, MT9V022_VERTICAL_BLANKING, 45); | ||
319 | if (!ret) | ||
320 | ret = reg_write(client, MT9V022_WINDOW_WIDTH, rect.width); | ||
321 | if (!ret) | ||
322 | ret = reg_write(client, MT9V022_WINDOW_HEIGHT, | ||
323 | rect.height + mt9v022->y_skip_top); | ||
324 | |||
325 | if (ret < 0) | ||
326 | return ret; | ||
327 | |||
328 | dev_dbg(&client->dev, "Frame %dx%d pixel\n", rect.width, rect.height); | ||
329 | |||
330 | mt9v022->rect = rect; | ||
331 | |||
332 | return 0; | ||
333 | } | ||
334 | |||
335 | static int mt9v022_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) | ||
336 | { | ||
337 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
338 | struct mt9v022 *mt9v022 = to_mt9v022(client); | ||
339 | |||
340 | a->c = mt9v022->rect; | ||
341 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | ||
342 | |||
343 | return 0; | ||
344 | } | ||
345 | |||
346 | static int mt9v022_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) | ||
347 | { | ||
348 | a->bounds.left = MT9V022_COLUMN_SKIP; | ||
349 | a->bounds.top = MT9V022_ROW_SKIP; | ||
350 | a->bounds.width = MT9V022_MAX_WIDTH; | ||
351 | a->bounds.height = MT9V022_MAX_HEIGHT; | ||
352 | a->defrect = a->bounds; | ||
353 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | ||
354 | a->pixelaspect.numerator = 1; | ||
355 | a->pixelaspect.denominator = 1; | ||
356 | |||
357 | return 0; | ||
358 | } | ||
359 | |||
360 | static int mt9v022_g_fmt(struct v4l2_subdev *sd, | ||
361 | struct v4l2_mbus_framefmt *mf) | ||
362 | { | ||
363 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
364 | struct mt9v022 *mt9v022 = to_mt9v022(client); | ||
365 | |||
366 | mf->width = mt9v022->rect.width; | ||
367 | mf->height = mt9v022->rect.height; | ||
368 | mf->code = mt9v022->fmt->code; | ||
369 | mf->colorspace = mt9v022->fmt->colorspace; | ||
370 | mf->field = V4L2_FIELD_NONE; | ||
371 | |||
372 | return 0; | ||
373 | } | ||
374 | |||
375 | static int mt9v022_s_fmt(struct v4l2_subdev *sd, | ||
376 | struct v4l2_mbus_framefmt *mf) | ||
377 | { | ||
378 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
379 | struct mt9v022 *mt9v022 = to_mt9v022(client); | ||
380 | struct v4l2_crop a = { | ||
381 | .c = { | ||
382 | .left = mt9v022->rect.left, | ||
383 | .top = mt9v022->rect.top, | ||
384 | .width = mf->width, | ||
385 | .height = mf->height, | ||
386 | }, | ||
387 | }; | ||
388 | int ret; | ||
389 | |||
390 | /* | ||
391 | * The caller provides a supported format, as verified per call to | ||
392 | * icd->try_fmt(), datawidth is from our supported format list | ||
393 | */ | ||
394 | switch (mf->code) { | ||
395 | case V4L2_MBUS_FMT_Y8_1X8: | ||
396 | case V4L2_MBUS_FMT_Y10_1X10: | ||
397 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM) | ||
398 | return -EINVAL; | ||
399 | break; | ||
400 | case V4L2_MBUS_FMT_SBGGR8_1X8: | ||
401 | case V4L2_MBUS_FMT_SBGGR10_1X10: | ||
402 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC) | ||
403 | return -EINVAL; | ||
404 | break; | ||
405 | default: | ||
406 | return -EINVAL; | ||
407 | } | ||
408 | |||
409 | /* No support for scaling on this camera, just crop. */ | ||
410 | ret = mt9v022_s_crop(sd, &a); | ||
411 | if (!ret) { | ||
412 | mf->width = mt9v022->rect.width; | ||
413 | mf->height = mt9v022->rect.height; | ||
414 | mt9v022->fmt = mt9v022_find_datafmt(mf->code, | ||
415 | mt9v022->fmts, mt9v022->num_fmts); | ||
416 | mf->colorspace = mt9v022->fmt->colorspace; | ||
417 | } | ||
418 | |||
419 | return ret; | ||
420 | } | ||
421 | |||
422 | static int mt9v022_try_fmt(struct v4l2_subdev *sd, | ||
423 | struct v4l2_mbus_framefmt *mf) | ||
424 | { | ||
425 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
426 | struct mt9v022 *mt9v022 = to_mt9v022(client); | ||
427 | const struct mt9v022_datafmt *fmt; | ||
428 | int align = mf->code == V4L2_MBUS_FMT_SBGGR8_1X8 || | ||
429 | mf->code == V4L2_MBUS_FMT_SBGGR10_1X10; | ||
430 | |||
431 | v4l_bound_align_image(&mf->width, MT9V022_MIN_WIDTH, | ||
432 | MT9V022_MAX_WIDTH, align, | ||
433 | &mf->height, MT9V022_MIN_HEIGHT + mt9v022->y_skip_top, | ||
434 | MT9V022_MAX_HEIGHT + mt9v022->y_skip_top, align, 0); | ||
435 | |||
436 | fmt = mt9v022_find_datafmt(mf->code, mt9v022->fmts, | ||
437 | mt9v022->num_fmts); | ||
438 | if (!fmt) { | ||
439 | fmt = mt9v022->fmt; | ||
440 | mf->code = fmt->code; | ||
441 | } | ||
442 | |||
443 | mf->colorspace = fmt->colorspace; | ||
444 | |||
445 | return 0; | ||
446 | } | ||
447 | |||
448 | static int mt9v022_g_chip_ident(struct v4l2_subdev *sd, | ||
449 | struct v4l2_dbg_chip_ident *id) | ||
450 | { | ||
451 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
452 | struct mt9v022 *mt9v022 = to_mt9v022(client); | ||
453 | |||
454 | if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) | ||
455 | return -EINVAL; | ||
456 | |||
457 | if (id->match.addr != client->addr) | ||
458 | return -ENODEV; | ||
459 | |||
460 | id->ident = mt9v022->model; | ||
461 | id->revision = 0; | ||
462 | |||
463 | return 0; | ||
464 | } | ||
465 | |||
466 | #ifdef CONFIG_VIDEO_ADV_DEBUG | ||
467 | static int mt9v022_g_register(struct v4l2_subdev *sd, | ||
468 | struct v4l2_dbg_register *reg) | ||
469 | { | ||
470 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
471 | |||
472 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) | ||
473 | return -EINVAL; | ||
474 | |||
475 | if (reg->match.addr != client->addr) | ||
476 | return -ENODEV; | ||
477 | |||
478 | reg->size = 2; | ||
479 | reg->val = reg_read(client, reg->reg); | ||
480 | |||
481 | if (reg->val > 0xffff) | ||
482 | return -EIO; | ||
483 | |||
484 | return 0; | ||
485 | } | ||
486 | |||
487 | static int mt9v022_s_register(struct v4l2_subdev *sd, | ||
488 | struct v4l2_dbg_register *reg) | ||
489 | { | ||
490 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
491 | |||
492 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) | ||
493 | return -EINVAL; | ||
494 | |||
495 | if (reg->match.addr != client->addr) | ||
496 | return -ENODEV; | ||
497 | |||
498 | if (reg_write(client, reg->reg, reg->val) < 0) | ||
499 | return -EIO; | ||
500 | |||
501 | return 0; | ||
502 | } | ||
503 | #endif | ||
504 | |||
505 | static const struct v4l2_queryctrl mt9v022_controls[] = { | ||
506 | { | ||
507 | .id = V4L2_CID_VFLIP, | ||
508 | .type = V4L2_CTRL_TYPE_BOOLEAN, | ||
509 | .name = "Flip Vertically", | ||
510 | .minimum = 0, | ||
511 | .maximum = 1, | ||
512 | .step = 1, | ||
513 | .default_value = 0, | ||
514 | }, { | ||
515 | .id = V4L2_CID_HFLIP, | ||
516 | .type = V4L2_CTRL_TYPE_BOOLEAN, | ||
517 | .name = "Flip Horizontally", | ||
518 | .minimum = 0, | ||
519 | .maximum = 1, | ||
520 | .step = 1, | ||
521 | .default_value = 0, | ||
522 | }, { | ||
523 | .id = V4L2_CID_GAIN, | ||
524 | .type = V4L2_CTRL_TYPE_INTEGER, | ||
525 | .name = "Analog Gain", | ||
526 | .minimum = 64, | ||
527 | .maximum = 127, | ||
528 | .step = 1, | ||
529 | .default_value = 64, | ||
530 | .flags = V4L2_CTRL_FLAG_SLIDER, | ||
531 | }, { | ||
532 | .id = V4L2_CID_EXPOSURE, | ||
533 | .type = V4L2_CTRL_TYPE_INTEGER, | ||
534 | .name = "Exposure", | ||
535 | .minimum = 1, | ||
536 | .maximum = 255, | ||
537 | .step = 1, | ||
538 | .default_value = 255, | ||
539 | .flags = V4L2_CTRL_FLAG_SLIDER, | ||
540 | }, { | ||
541 | .id = V4L2_CID_AUTOGAIN, | ||
542 | .type = V4L2_CTRL_TYPE_BOOLEAN, | ||
543 | .name = "Automatic Gain", | ||
544 | .minimum = 0, | ||
545 | .maximum = 1, | ||
546 | .step = 1, | ||
547 | .default_value = 1, | ||
548 | }, { | ||
549 | .id = V4L2_CID_EXPOSURE_AUTO, | ||
550 | .type = V4L2_CTRL_TYPE_BOOLEAN, | ||
551 | .name = "Automatic Exposure", | ||
552 | .minimum = 0, | ||
553 | .maximum = 1, | ||
554 | .step = 1, | ||
555 | .default_value = 1, | ||
556 | } | ||
557 | }; | ||
558 | |||
559 | static struct soc_camera_ops mt9v022_ops = { | ||
560 | .set_bus_param = mt9v022_set_bus_param, | ||
561 | .query_bus_param = mt9v022_query_bus_param, | ||
562 | .controls = mt9v022_controls, | ||
563 | .num_controls = ARRAY_SIZE(mt9v022_controls), | ||
564 | }; | ||
565 | |||
566 | static int mt9v022_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) | ||
567 | { | ||
568 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
569 | const struct v4l2_queryctrl *qctrl; | ||
570 | unsigned long range; | ||
571 | int data; | ||
572 | |||
573 | qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id); | ||
574 | |||
575 | switch (ctrl->id) { | ||
576 | case V4L2_CID_VFLIP: | ||
577 | data = reg_read(client, MT9V022_READ_MODE); | ||
578 | if (data < 0) | ||
579 | return -EIO; | ||
580 | ctrl->value = !!(data & 0x10); | ||
581 | break; | ||
582 | case V4L2_CID_HFLIP: | ||
583 | data = reg_read(client, MT9V022_READ_MODE); | ||
584 | if (data < 0) | ||
585 | return -EIO; | ||
586 | ctrl->value = !!(data & 0x20); | ||
587 | break; | ||
588 | case V4L2_CID_EXPOSURE_AUTO: | ||
589 | data = reg_read(client, MT9V022_AEC_AGC_ENABLE); | ||
590 | if (data < 0) | ||
591 | return -EIO; | ||
592 | ctrl->value = !!(data & 0x1); | ||
593 | break; | ||
594 | case V4L2_CID_AUTOGAIN: | ||
595 | data = reg_read(client, MT9V022_AEC_AGC_ENABLE); | ||
596 | if (data < 0) | ||
597 | return -EIO; | ||
598 | ctrl->value = !!(data & 0x2); | ||
599 | break; | ||
600 | case V4L2_CID_GAIN: | ||
601 | data = reg_read(client, MT9V022_ANALOG_GAIN); | ||
602 | if (data < 0) | ||
603 | return -EIO; | ||
604 | |||
605 | range = qctrl->maximum - qctrl->minimum; | ||
606 | ctrl->value = ((data - 16) * range + 24) / 48 + qctrl->minimum; | ||
607 | |||
608 | break; | ||
609 | case V4L2_CID_EXPOSURE: | ||
610 | data = reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH); | ||
611 | if (data < 0) | ||
612 | return -EIO; | ||
613 | |||
614 | range = qctrl->maximum - qctrl->minimum; | ||
615 | ctrl->value = ((data - 1) * range + 239) / 479 + qctrl->minimum; | ||
616 | |||
617 | break; | ||
618 | } | ||
619 | return 0; | ||
620 | } | ||
621 | |||
622 | static int mt9v022_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) | ||
623 | { | ||
624 | int data; | ||
625 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
626 | const struct v4l2_queryctrl *qctrl; | ||
627 | |||
628 | qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id); | ||
629 | if (!qctrl) | ||
630 | return -EINVAL; | ||
631 | |||
632 | switch (ctrl->id) { | ||
633 | case V4L2_CID_VFLIP: | ||
634 | if (ctrl->value) | ||
635 | data = reg_set(client, MT9V022_READ_MODE, 0x10); | ||
636 | else | ||
637 | data = reg_clear(client, MT9V022_READ_MODE, 0x10); | ||
638 | if (data < 0) | ||
639 | return -EIO; | ||
640 | break; | ||
641 | case V4L2_CID_HFLIP: | ||
642 | if (ctrl->value) | ||
643 | data = reg_set(client, MT9V022_READ_MODE, 0x20); | ||
644 | else | ||
645 | data = reg_clear(client, MT9V022_READ_MODE, 0x20); | ||
646 | if (data < 0) | ||
647 | return -EIO; | ||
648 | break; | ||
649 | case V4L2_CID_GAIN: | ||
650 | /* mt9v022 has minimum == default */ | ||
651 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) | ||
652 | return -EINVAL; | ||
653 | else { | ||
654 | unsigned long range = qctrl->maximum - qctrl->minimum; | ||
655 | /* Valid values 16 to 64, 32 to 64 must be even. */ | ||
656 | unsigned long gain = ((ctrl->value - qctrl->minimum) * | ||
657 | 48 + range / 2) / range + 16; | ||
658 | if (gain >= 32) | ||
659 | gain &= ~1; | ||
660 | /* | ||
661 | * The user wants to set gain manually, hope, she | ||
662 | * knows, what she's doing... Switch AGC off. | ||
663 | */ | ||
664 | |||
665 | if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2) < 0) | ||
666 | return -EIO; | ||
667 | |||
668 | dev_dbg(&client->dev, "Setting gain from %d to %lu\n", | ||
669 | reg_read(client, MT9V022_ANALOG_GAIN), gain); | ||
670 | if (reg_write(client, MT9V022_ANALOG_GAIN, gain) < 0) | ||
671 | return -EIO; | ||
672 | } | ||
673 | break; | ||
674 | case V4L2_CID_EXPOSURE: | ||
675 | /* mt9v022 has maximum == default */ | ||
676 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) | ||
677 | return -EINVAL; | ||
678 | else { | ||
679 | unsigned long range = qctrl->maximum - qctrl->minimum; | ||
680 | unsigned long shutter = ((ctrl->value - qctrl->minimum) * | ||
681 | 479 + range / 2) / range + 1; | ||
682 | /* | ||
683 | * The user wants to set shutter width manually, hope, | ||
684 | * she knows, what she's doing... Switch AEC off. | ||
685 | */ | ||
686 | |||
687 | if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1) < 0) | ||
688 | return -EIO; | ||
689 | |||
690 | dev_dbg(&client->dev, "Shutter width from %d to %lu\n", | ||
691 | reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH), | ||
692 | shutter); | ||
693 | if (reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, | ||
694 | shutter) < 0) | ||
695 | return -EIO; | ||
696 | } | ||
697 | break; | ||
698 | case V4L2_CID_AUTOGAIN: | ||
699 | if (ctrl->value) | ||
700 | data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x2); | ||
701 | else | ||
702 | data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2); | ||
703 | if (data < 0) | ||
704 | return -EIO; | ||
705 | break; | ||
706 | case V4L2_CID_EXPOSURE_AUTO: | ||
707 | if (ctrl->value) | ||
708 | data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x1); | ||
709 | else | ||
710 | data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1); | ||
711 | if (data < 0) | ||
712 | return -EIO; | ||
713 | break; | ||
714 | } | ||
715 | return 0; | ||
716 | } | ||
717 | |||
718 | /* | ||
719 | * Interface active, can use i2c. If it fails, it can indeed mean, that | ||
720 | * this wasn't our capture interface, so, we wait for the right one | ||
721 | */ | ||
722 | static int mt9v022_video_probe(struct soc_camera_device *icd, | ||
723 | struct i2c_client *client) | ||
724 | { | ||
725 | struct mt9v022 *mt9v022 = to_mt9v022(client); | ||
726 | struct soc_camera_link *icl = to_soc_camera_link(icd); | ||
727 | s32 data; | ||
728 | int ret; | ||
729 | unsigned long flags; | ||
730 | |||
731 | /* We must have a parent by now. And it cannot be a wrong one. */ | ||
732 | BUG_ON(!icd->parent || | ||
733 | to_soc_camera_host(icd->parent)->nr != icd->iface); | ||
734 | |||
735 | /* Read out the chip version register */ | ||
736 | data = reg_read(client, MT9V022_CHIP_VERSION); | ||
737 | |||
738 | /* must be 0x1311 or 0x1313 */ | ||
739 | if (data != 0x1311 && data != 0x1313) { | ||
740 | ret = -ENODEV; | ||
741 | dev_info(&client->dev, "No MT9V022 found, ID register 0x%x\n", | ||
742 | data); | ||
743 | goto ei2c; | ||
744 | } | ||
745 | |||
746 | /* Soft reset */ | ||
747 | ret = reg_write(client, MT9V022_RESET, 1); | ||
748 | if (ret < 0) | ||
749 | goto ei2c; | ||
750 | /* 15 clock cycles */ | ||
751 | udelay(200); | ||
752 | if (reg_read(client, MT9V022_RESET)) { | ||
753 | dev_err(&client->dev, "Resetting MT9V022 failed!\n"); | ||
754 | if (ret > 0) | ||
755 | ret = -EIO; | ||
756 | goto ei2c; | ||
757 | } | ||
758 | |||
759 | /* Set monochrome or colour sensor type */ | ||
760 | if (sensor_type && (!strcmp("colour", sensor_type) || | ||
761 | !strcmp("color", sensor_type))) { | ||
762 | ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11); | ||
763 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATC; | ||
764 | mt9v022->fmts = mt9v022_colour_fmts; | ||
765 | } else { | ||
766 | ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 0x11); | ||
767 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATM; | ||
768 | mt9v022->fmts = mt9v022_monochrome_fmts; | ||
769 | } | ||
770 | |||
771 | if (ret < 0) | ||
772 | goto ei2c; | ||
773 | |||
774 | mt9v022->num_fmts = 0; | ||
775 | |||
776 | /* | ||
777 | * This is a 10bit sensor, so by default we only allow 10bit. | ||
778 | * The platform may support different bus widths due to | ||
779 | * different routing of the data lines. | ||
780 | */ | ||
781 | if (icl->query_bus_param) | ||
782 | flags = icl->query_bus_param(icl); | ||
783 | else | ||
784 | flags = SOCAM_DATAWIDTH_10; | ||
785 | |||
786 | if (flags & SOCAM_DATAWIDTH_10) | ||
787 | mt9v022->num_fmts++; | ||
788 | else | ||
789 | mt9v022->fmts++; | ||
790 | |||
791 | if (flags & SOCAM_DATAWIDTH_8) | ||
792 | mt9v022->num_fmts++; | ||
793 | |||
794 | mt9v022->fmt = &mt9v022->fmts[0]; | ||
795 | |||
796 | dev_info(&client->dev, "Detected a MT9V022 chip ID %x, %s sensor\n", | ||
797 | data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ? | ||
798 | "monochrome" : "colour"); | ||
799 | |||
800 | ret = mt9v022_init(client); | ||
801 | if (ret < 0) | ||
802 | dev_err(&client->dev, "Failed to initialise the camera\n"); | ||
803 | |||
804 | ei2c: | ||
805 | return ret; | ||
806 | } | ||
807 | |||
808 | static void mt9v022_video_remove(struct soc_camera_device *icd) | ||
809 | { | ||
810 | struct soc_camera_link *icl = to_soc_camera_link(icd); | ||
811 | |||
812 | dev_dbg(icd->pdev, "Video removed: %p, %p\n", | ||
813 | icd->parent, icd->vdev); | ||
814 | if (icl->free_bus) | ||
815 | icl->free_bus(icl); | ||
816 | } | ||
817 | |||
818 | static int mt9v022_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines) | ||
819 | { | ||
820 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
821 | struct mt9v022 *mt9v022 = to_mt9v022(client); | ||
822 | |||
823 | *lines = mt9v022->y_skip_top; | ||
824 | |||
825 | return 0; | ||
826 | } | ||
827 | |||
828 | static struct v4l2_subdev_core_ops mt9v022_subdev_core_ops = { | ||
829 | .g_ctrl = mt9v022_g_ctrl, | ||
830 | .s_ctrl = mt9v022_s_ctrl, | ||
831 | .g_chip_ident = mt9v022_g_chip_ident, | ||
832 | #ifdef CONFIG_VIDEO_ADV_DEBUG | ||
833 | .g_register = mt9v022_g_register, | ||
834 | .s_register = mt9v022_s_register, | ||
835 | #endif | ||
836 | }; | ||
837 | |||
838 | static int mt9v022_enum_fmt(struct v4l2_subdev *sd, unsigned int index, | ||
839 | enum v4l2_mbus_pixelcode *code) | ||
840 | { | ||
841 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
842 | struct mt9v022 *mt9v022 = to_mt9v022(client); | ||
843 | |||
844 | if (index >= mt9v022->num_fmts) | ||
845 | return -EINVAL; | ||
846 | |||
847 | *code = mt9v022->fmts[index].code; | ||
848 | return 0; | ||
849 | } | ||
850 | |||
851 | static struct v4l2_subdev_video_ops mt9v022_subdev_video_ops = { | ||
852 | .s_stream = mt9v022_s_stream, | ||
853 | .s_mbus_fmt = mt9v022_s_fmt, | ||
854 | .g_mbus_fmt = mt9v022_g_fmt, | ||
855 | .try_mbus_fmt = mt9v022_try_fmt, | ||
856 | .s_crop = mt9v022_s_crop, | ||
857 | .g_crop = mt9v022_g_crop, | ||
858 | .cropcap = mt9v022_cropcap, | ||
859 | .enum_mbus_fmt = mt9v022_enum_fmt, | ||
860 | }; | ||
861 | |||
862 | static struct v4l2_subdev_sensor_ops mt9v022_subdev_sensor_ops = { | ||
863 | .g_skip_top_lines = mt9v022_g_skip_top_lines, | ||
864 | }; | ||
865 | |||
866 | static struct v4l2_subdev_ops mt9v022_subdev_ops = { | ||
867 | .core = &mt9v022_subdev_core_ops, | ||
868 | .video = &mt9v022_subdev_video_ops, | ||
869 | .sensor = &mt9v022_subdev_sensor_ops, | ||
870 | }; | ||
871 | |||
872 | static int mt9v022_probe(struct i2c_client *client, | ||
873 | const struct i2c_device_id *did) | ||
874 | { | ||
875 | struct mt9v022 *mt9v022; | ||
876 | struct soc_camera_device *icd = client->dev.platform_data; | ||
877 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); | ||
878 | struct soc_camera_link *icl; | ||
879 | int ret; | ||
880 | |||
881 | if (!icd) { | ||
882 | dev_err(&client->dev, "MT9V022: missing soc-camera data!\n"); | ||
883 | return -EINVAL; | ||
884 | } | ||
885 | |||
886 | icl = to_soc_camera_link(icd); | ||
887 | if (!icl) { | ||
888 | dev_err(&client->dev, "MT9V022 driver needs platform data\n"); | ||
889 | return -EINVAL; | ||
890 | } | ||
891 | |||
892 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { | ||
893 | dev_warn(&adapter->dev, | ||
894 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); | ||
895 | return -EIO; | ||
896 | } | ||
897 | |||
898 | mt9v022 = kzalloc(sizeof(struct mt9v022), GFP_KERNEL); | ||
899 | if (!mt9v022) | ||
900 | return -ENOMEM; | ||
901 | |||
902 | v4l2_i2c_subdev_init(&mt9v022->subdev, client, &mt9v022_subdev_ops); | ||
903 | |||
904 | mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT; | ||
905 | |||
906 | icd->ops = &mt9v022_ops; | ||
907 | /* | ||
908 | * MT9V022 _really_ corrupts the first read out line. | ||
909 | * TODO: verify on i.MX31 | ||
910 | */ | ||
911 | mt9v022->y_skip_top = 1; | ||
912 | mt9v022->rect.left = MT9V022_COLUMN_SKIP; | ||
913 | mt9v022->rect.top = MT9V022_ROW_SKIP; | ||
914 | mt9v022->rect.width = MT9V022_MAX_WIDTH; | ||
915 | mt9v022->rect.height = MT9V022_MAX_HEIGHT; | ||
916 | |||
917 | ret = mt9v022_video_probe(icd, client); | ||
918 | if (ret) { | ||
919 | icd->ops = NULL; | ||
920 | kfree(mt9v022); | ||
921 | } | ||
922 | |||
923 | return ret; | ||
924 | } | ||
925 | |||
926 | static int mt9v022_remove(struct i2c_client *client) | ||
927 | { | ||
928 | struct mt9v022 *mt9v022 = to_mt9v022(client); | ||
929 | struct soc_camera_device *icd = client->dev.platform_data; | ||
930 | |||
931 | icd->ops = NULL; | ||
932 | mt9v022_video_remove(icd); | ||
933 | kfree(mt9v022); | ||
934 | |||
935 | return 0; | ||
936 | } | ||
937 | static const struct i2c_device_id mt9v022_id[] = { | ||
938 | { "mt9v022", 0 }, | ||
939 | { } | ||
940 | }; | ||
941 | MODULE_DEVICE_TABLE(i2c, mt9v022_id); | ||
942 | |||
943 | static struct i2c_driver mt9v022_i2c_driver = { | ||
944 | .driver = { | ||
945 | .name = "mt9v022", | ||
946 | }, | ||
947 | .probe = mt9v022_probe, | ||
948 | .remove = mt9v022_remove, | ||
949 | .id_table = mt9v022_id, | ||
950 | }; | ||
951 | |||
952 | static int __init mt9v022_mod_init(void) | ||
953 | { | ||
954 | return i2c_add_driver(&mt9v022_i2c_driver); | ||
955 | } | ||
956 | |||
957 | static void __exit mt9v022_mod_exit(void) | ||
958 | { | ||
959 | i2c_del_driver(&mt9v022_i2c_driver); | ||
960 | } | ||
961 | |||
962 | module_init(mt9v022_mod_init); | ||
963 | module_exit(mt9v022_mod_exit); | ||
964 | |||
965 | MODULE_DESCRIPTION("Micron MT9V022 Camera driver"); | ||
966 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | ||
967 | MODULE_LICENSE("GPL"); | ||