[openembedded.git] / recipes / linux / linux-omap-2.6.39 / camera / 0002-v4l-Add-mt9v032-sensor-driver.patch
| blob | 66353eaabfb33e746aaa87b85bbbc8752212c998 |
1 From 55d8ca4b03eb04432adefa6fbf6e5f0197c7fb32 Mon Sep 17 00:00:00 2001
2 From: Detlev Casanova <detlev.casanova@gmail.com>
3 Date: Sun, 28 Nov 2010 19:07:20 +0100
4 Subject: [PATCH 2/3] v4l: Add mt9v032 sensor driver
6 The MT9V032 is a parallel wide VGA sensor from Aptina (formerly Micron)
7 controlled through I2C.
9 The driver creates a V4L2 subdevice. It currently supports binning and
10 cropping, and the gain, auto gain, exposure, auto exposure and test
11 pattern controls.
13 Signed-off-by: Detlev Casanova <detlev.casanova@gmail.com>
14 Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
15 ---
16 drivers/media/video/Kconfig | 7 +
17 drivers/media/video/Makefile | 1 +
18 drivers/media/video/mt9v032.c | 773 +++++++++++++++++++++++++++++++++++++++++
19 include/media/mt9v032.h | 12 +
20 4 files changed, 793 insertions(+), 0 deletions(-)
21 create mode 100644 drivers/media/video/mt9v032.c
22 create mode 100644 include/media/mt9v032.h
24 diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
25 index cb87e35..3a5bc57 100644
26 --- a/drivers/media/video/Kconfig
27 +++ b/drivers/media/video/Kconfig
28 @@ -344,6 +344,13 @@ config VIDEO_MT9V011
29 mt0v011 1.3 Mpixel camera. It currently only works with the
30 em28xx driver.
32 +config VIDEO_MT9V032
33 + tristate "Micron MT9V032 sensor support"
34 + depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
35 + ---help---
36 + This is a Video4Linux2 sensor-level driver for the Micron
37 + MT9V032 752x480 CMOS sensor.
38 +
39 config VIDEO_TCM825X
40 tristate "TCM825x camera sensor support"
41 depends on I2C && VIDEO_V4L2
42 diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
43 index 912b29b..6679c6a 100644
44 --- a/drivers/media/video/Makefile
45 +++ b/drivers/media/video/Makefile
46 @@ -67,6 +67,7 @@ obj-$(CONFIG_VIDEO_TCM825X) += tcm825x.o
47 obj-$(CONFIG_VIDEO_TVEEPROM) += tveeprom.o
48 obj-$(CONFIG_VIDEO_MT9P031) += mt9p031.o
49 obj-$(CONFIG_VIDEO_MT9V011) += mt9v011.o
50 +obj-$(CONFIG_VIDEO_MT9V032) += mt9v032.o
51 obj-$(CONFIG_VIDEO_SR030PC30) += sr030pc30.o
52 obj-$(CONFIG_VIDEO_NOON010PC30) += noon010pc30.o
54 diff --git a/drivers/media/video/mt9v032.c b/drivers/media/video/mt9v032.c
55 new file mode 100644
56 index 0000000..c64e1dc
57 --- /dev/null
58 +++ b/drivers/media/video/mt9v032.c
59 @@ -0,0 +1,773 @@
60 +/*
61 + * Driver for MT9V032 CMOS Image Sensor from Micron
62 + *
63 + * Copyright (C) 2010, Laurent Pinchart <laurent.pinchart@ideasonboard.com>
64 + *
65 + * Based on the MT9M001 driver,
66 + *
67 + * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
68 + *
69 + * This program is free software; you can redistribute it and/or modify
70 + * it under the terms of the GNU General Public License version 2 as
71 + * published by the Free Software Foundation.
72 + */
73 +
74 +#include <linux/delay.h>
75 +#include <linux/i2c.h>
76 +#include <linux/log2.h>
77 +#include <linux/mutex.h>
78 +#include <linux/slab.h>
79 +#include <linux/videodev2.h>
80 +#include <linux/v4l2-mediabus.h>
81 +
82 +#include <media/mt9v032.h>
83 +#include <media/v4l2-ctrls.h>
84 +#include <media/v4l2-device.h>
85 +#include <media/v4l2-subdev.h>
86 +
87 +#define MT9V032_PIXEL_ARRAY_HEIGHT 492
88 +#define MT9V032_PIXEL_ARRAY_WIDTH 782
89 +
90 +#define MT9V032_CHIP_VERSION 0x00
91 +#define MT9V032_CHIP_ID_REV1 0x1311
92 +#define MT9V032_CHIP_ID_REV3 0x1313
93 +#define MT9V032_COLUMN_START 0x01
94 +#define MT9V032_COLUMN_START_MIN 1
95 +#define MT9V032_COLUMN_START_DEF 1
96 +#define MT9V032_COLUMN_START_MAX 752
97 +#define MT9V032_ROW_START 0x02
98 +#define MT9V032_ROW_START_MIN 4
99 +#define MT9V032_ROW_START_DEF 5
100 +#define MT9V032_ROW_START_MAX 482
101 +#define MT9V032_WINDOW_HEIGHT 0x03
102 +#define MT9V032_WINDOW_HEIGHT_MIN 1
103 +#define MT9V032_WINDOW_HEIGHT_DEF 480
104 +#define MT9V032_WINDOW_HEIGHT_MAX 480
105 +#define MT9V032_WINDOW_WIDTH 0x04
106 +#define MT9V032_WINDOW_WIDTH_MIN 1
107 +#define MT9V032_WINDOW_WIDTH_DEF 752
108 +#define MT9V032_WINDOW_WIDTH_MAX 752
109 +#define MT9V032_HORIZONTAL_BLANKING 0x05
110 +#define MT9V032_HORIZONTAL_BLANKING_MIN 43
111 +#define MT9V032_HORIZONTAL_BLANKING_MAX 1023
112 +#define MT9V032_VERTICAL_BLANKING 0x06
113 +#define MT9V032_VERTICAL_BLANKING_MIN 4
114 +#define MT9V032_VERTICAL_BLANKING_MAX 3000
115 +#define MT9V032_CHIP_CONTROL 0x07
116 +#define MT9V032_CHIP_CONTROL_MASTER_MODE (1 << 3)
117 +#define MT9V032_CHIP_CONTROL_DOUT_ENABLE (1 << 7)
118 +#define MT9V032_CHIP_CONTROL_SEQUENTIAL (1 << 8)
119 +#define MT9V032_SHUTTER_WIDTH1 0x08
120 +#define MT9V032_SHUTTER_WIDTH2 0x09
121 +#define MT9V032_SHUTTER_WIDTH_CONTROL 0x0a
122 +#define MT9V032_TOTAL_SHUTTER_WIDTH 0x0b
123 +#define MT9V032_TOTAL_SHUTTER_WIDTH_MIN 1
124 +#define MT9V032_TOTAL_SHUTTER_WIDTH_DEF 480
125 +#define MT9V032_TOTAL_SHUTTER_WIDTH_MAX 32767
126 +#define MT9V032_RESET 0x0c
127 +#define MT9V032_READ_MODE 0x0d
128 +#define MT9V032_READ_MODE_ROW_BIN_MASK (3 << 0)
129 +#define MT9V032_READ_MODE_ROW_BIN_SHIFT 0
130 +#define MT9V032_READ_MODE_COLUMN_BIN_MASK (3 << 2)
131 +#define MT9V032_READ_MODE_COLUMN_BIN_SHIFT 2
132 +#define MT9V032_READ_MODE_ROW_FLIP (1 << 4)
133 +#define MT9V032_READ_MODE_COLUMN_FLIP (1 << 5)
134 +#define MT9V032_READ_MODE_DARK_COLUMNS (1 << 6)
135 +#define MT9V032_READ_MODE_DARK_ROWS (1 << 7)
136 +#define MT9V032_PIXEL_OPERATION_MODE 0x0f
137 +#define MT9V032_PIXEL_OPERATION_MODE_COLOR (1 << 2)
138 +#define MT9V032_PIXEL_OPERATION_MODE_HDR (1 << 6)
139 +#define MT9V032_ANALOG_GAIN 0x35
140 +#define MT9V032_ANALOG_GAIN_MIN 16
141 +#define MT9V032_ANALOG_GAIN_DEF 16
142 +#define MT9V032_ANALOG_GAIN_MAX 64
143 +#define MT9V032_MAX_ANALOG_GAIN 0x36
144 +#define MT9V032_MAX_ANALOG_GAIN_MAX 127
145 +#define MT9V032_FRAME_DARK_AVERAGE 0x42
146 +#define MT9V032_DARK_AVG_THRESH 0x46
147 +#define MT9V032_DARK_AVG_LOW_THRESH_MASK (255 << 0)
148 +#define MT9V032_DARK_AVG_LOW_THRESH_SHIFT 0
149 +#define MT9V032_DARK_AVG_HIGH_THRESH_MASK (255 << 8)
150 +#define MT9V032_DARK_AVG_HIGH_THRESH_SHIFT 8
151 +#define MT9V032_ROW_NOISE_CORR_CONTROL 0x70
152 +#define MT9V032_ROW_NOISE_CORR_ENABLE (1 << 5)
153 +#define MT9V032_ROW_NOISE_CORR_USE_BLK_AVG (1 << 7)
154 +#define MT9V032_PIXEL_CLOCK 0x74
155 +#define MT9V032_PIXEL_CLOCK_INV_LINE (1 << 0)
156 +#define MT9V032_PIXEL_CLOCK_INV_FRAME (1 << 1)
157 +#define MT9V032_PIXEL_CLOCK_XOR_LINE (1 << 2)
158 +#define MT9V032_PIXEL_CLOCK_CONT_LINE (1 << 3)
159 +#define MT9V032_PIXEL_CLOCK_INV_PXL_CLK (1 << 4)
160 +#define MT9V032_TEST_PATTERN 0x7f
161 +#define MT9V032_TEST_PATTERN_DATA_MASK (1023 << 0)
162 +#define MT9V032_TEST_PATTERN_DATA_SHIFT 0
163 +#define MT9V032_TEST_PATTERN_USE_DATA (1 << 10)
164 +#define MT9V032_TEST_PATTERN_GRAY_MASK (3 << 11)
165 +#define MT9V032_TEST_PATTERN_GRAY_NONE (0 << 11)
166 +#define MT9V032_TEST_PATTERN_GRAY_VERTICAL (1 << 11)
167 +#define MT9V032_TEST_PATTERN_GRAY_HORIZONTAL (2 << 11)
168 +#define MT9V032_TEST_PATTERN_GRAY_DIAGONAL (3 << 11)
169 +#define MT9V032_TEST_PATTERN_ENABLE (1 << 13)
170 +#define MT9V032_TEST_PATTERN_FLIP (1 << 14)
171 +#define MT9V032_AEC_AGC_ENABLE 0xaf
172 +#define MT9V032_AEC_ENABLE (1 << 0)
173 +#define MT9V032_AGC_ENABLE (1 << 1)
174 +#define MT9V032_THERMAL_INFO 0xc1
175 +
176 +struct mt9v032 {
177 + struct v4l2_subdev subdev;
178 + struct media_pad pad;
179 +
180 + struct v4l2_mbus_framefmt format;
181 + struct v4l2_rect crop;
182 +
183 + struct v4l2_ctrl_handler ctrls;
184 +
185 + struct mutex power_lock;
186 + int power_count;
187 +
188 + struct mt9v032_platform_data *pdata;
189 + u16 chip_control;
190 + u16 aec_agc;
191 +};
192 +
193 +static struct mt9v032 *to_mt9v032(struct v4l2_subdev *sd)
194 +{
195 + return container_of(sd, struct mt9v032, subdev);
196 +}
197 +
198 +static int mt9v032_read(struct i2c_client *client, const u8 reg)
199 +{
200 + s32 data = i2c_smbus_read_word_data(client, reg);
201 + dev_dbg(&client->dev, "%s: read 0x%04x from 0x%02x\n", __func__,
202 + swab16(data), reg);
203 + return data < 0 ? data : swab16(data);
204 +}
205 +
206 +static int mt9v032_write(struct i2c_client *client, const u8 reg,
207 + const u16 data)
208 +{
209 + dev_dbg(&client->dev, "%s: writing 0x%04x to 0x%02x\n", __func__,
210 + data, reg);
211 + return i2c_smbus_write_word_data(client, reg, swab16(data));
212 +}
213 +
214 +static int mt9v032_set_chip_control(struct mt9v032 *mt9v032, u16 clear, u16 set)
215 +{
216 + struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
217 + u16 value = (mt9v032->chip_control & ~clear) | set;
218 + int ret;
219 +
220 + ret = mt9v032_write(client, MT9V032_CHIP_CONTROL, value);
221 + if (ret < 0)
222 + return ret;
223 +
224 + mt9v032->chip_control = value;
225 + return 0;
226 +}
227 +
228 +static int
229 +mt9v032_update_aec_agc(struct mt9v032 *mt9v032, u16 which, int enable)
230 +{
231 + struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
232 + u16 value = mt9v032->aec_agc;
233 + int ret;
234 +
235 + if (enable)
236 + value |= which;
237 + else
238 + value &= ~which;
239 +
240 + ret = mt9v032_write(client, MT9V032_AEC_AGC_ENABLE, value);
241 + if (ret < 0)
242 + return ret;
243 +
244 + mt9v032->aec_agc = value;
245 + return 0;
246 +}
247 +
248 +static int mt9v032_power_on(struct mt9v032 *mt9v032)
249 +{
250 + struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
251 + int ret;
252 +
253 + if (mt9v032->pdata->set_clock) {
254 + mt9v032->pdata->set_clock(&mt9v032->subdev, 25000000);
255 + udelay(1);
256 + }
257 +
258 + /* Reset the chip and stop data read out */
259 + ret = mt9v032_write(client, MT9V032_RESET, 1);
260 + if (ret < 0)
261 + return ret;
262 +
263 + ret = mt9v032_write(client, MT9V032_RESET, 0);
264 + if (ret < 0)
265 + return ret;
266 +
267 + return mt9v032_write(client, MT9V032_CHIP_CONTROL, 0);
268 +}
269 +
270 +static void mt9v032_power_off(struct mt9v032 *mt9v032)
271 +{
272 + if (mt9v032->pdata->set_clock)
273 + mt9v032->pdata->set_clock(&mt9v032->subdev, 0);
274 +}
275 +
276 +static int __mt9v032_set_power(struct mt9v032 *mt9v032, bool on)
277 +{
278 + struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
279 + int ret;
280 +
281 + if (!on) {
282 + mt9v032_power_off(mt9v032);
283 + return 0;
284 + }
285 +
286 + ret = mt9v032_power_on(mt9v032);
287 + if (ret < 0)
288 + return ret;
289 +
290 + /* Configure the pixel clock polarity */
291 + if (mt9v032->pdata && mt9v032->pdata->clk_pol) {
292 + ret = mt9v032_write(client, MT9V032_PIXEL_CLOCK,
293 + MT9V032_PIXEL_CLOCK_INV_PXL_CLK);
294 + if (ret < 0)
295 + return ret;
296 + }
297 +
298 + /* Disable the noise correction algorithm and restore the controls. */
299 + ret = mt9v032_write(client, MT9V032_ROW_NOISE_CORR_CONTROL, 0);
300 + if (ret < 0)
301 + return ret;
302 +
303 + return v4l2_ctrl_handler_setup(&mt9v032->ctrls);
304 +}
305 +
306 +/* -----------------------------------------------------------------------------
307 + * V4L2 subdev video operations
308 + */
309 +
310 +static struct v4l2_mbus_framefmt *
311 +__mt9v032_get_pad_format(struct mt9v032 *mt9v032, struct v4l2_subdev_fh *fh,
312 + unsigned int pad, enum v4l2_subdev_format_whence which)
313 +{
314 + switch (which) {
315 + case V4L2_SUBDEV_FORMAT_TRY:
316 + return v4l2_subdev_get_try_format(fh, pad);
317 + case V4L2_SUBDEV_FORMAT_ACTIVE:
318 + return &mt9v032->format;
319 + default:
320 + return NULL;
321 + }
322 +}
323 +
324 +static struct v4l2_rect *
325 +__mt9v032_get_pad_crop(struct mt9v032 *mt9v032, struct v4l2_subdev_fh *fh,
326 + unsigned int pad, enum v4l2_subdev_format_whence which)
327 +{
328 + switch (which) {
329 + case V4L2_SUBDEV_FORMAT_TRY:
330 + return v4l2_subdev_get_try_crop(fh, pad);
331 + case V4L2_SUBDEV_FORMAT_ACTIVE:
332 + return &mt9v032->crop;
333 + default:
334 + return NULL;
335 + }
336 +}
337 +
338 +static int mt9v032_s_stream(struct v4l2_subdev *subdev, int enable)
339 +{
340 + const u16 mode = MT9V032_CHIP_CONTROL_MASTER_MODE
341 + | MT9V032_CHIP_CONTROL_DOUT_ENABLE
342 + | MT9V032_CHIP_CONTROL_SEQUENTIAL;
343 + struct i2c_client *client = v4l2_get_subdevdata(subdev);
344 + struct mt9v032 *mt9v032 = to_mt9v032(subdev);
345 + struct v4l2_mbus_framefmt *format = &mt9v032->format;
346 + struct v4l2_rect *crop = &mt9v032->crop;
347 + unsigned int hratio;
348 + unsigned int vratio;
349 + int ret;
350 +
351 + if (!enable)
352 + return mt9v032_set_chip_control(mt9v032, mode, 0);
353 +
354 + /* Configure the window size and row/column bin */
355 + hratio = DIV_ROUND_CLOSEST(crop->width, format->width);
356 + vratio = DIV_ROUND_CLOSEST(crop->height, format->height);
357 +
358 + ret = mt9v032_write(client, MT9V032_READ_MODE,
359 + (hratio - 1) << MT9V032_READ_MODE_ROW_BIN_SHIFT |
360 + (vratio - 1) << MT9V032_READ_MODE_COLUMN_BIN_SHIFT);
361 + if (ret < 0)
362 + return ret;
363 +
364 + ret = mt9v032_write(client, MT9V032_COLUMN_START, crop->left);
365 + if (ret < 0)
366 + return ret;
367 +
368 + ret = mt9v032_write(client, MT9V032_ROW_START, crop->top);
369 + if (ret < 0)
370 + return ret;
371 +
372 + ret = mt9v032_write(client, MT9V032_WINDOW_WIDTH, crop->width);
373 + if (ret < 0)
374 + return ret;
375 +
376 + ret = mt9v032_write(client, MT9V032_WINDOW_HEIGHT, crop->height);
377 + if (ret < 0)
378 + return ret;
379 +
380 + ret = mt9v032_write(client, MT9V032_HORIZONTAL_BLANKING,
381 + max(43, 660 - crop->width));
382 + if (ret < 0)
383 + return ret;
384 +
385 + /* Switch to master "normal" mode */
386 + return mt9v032_set_chip_control(mt9v032, 0, mode);
387 +}
388 +
389 +static int mt9v032_enum_mbus_code(struct v4l2_subdev *subdev,
390 + struct v4l2_subdev_fh *fh,
391 + struct v4l2_subdev_mbus_code_enum *code)
392 +{
393 + if (code->index > 0)
394 + return -EINVAL;
395 +
396 + code->code = V4L2_MBUS_FMT_SGRBG10_1X10;
397 + return 0;
398 +}
399 +
400 +static int mt9v032_enum_frame_size(struct v4l2_subdev *subdev,
401 + struct v4l2_subdev_fh *fh,
402 + struct v4l2_subdev_frame_size_enum *fse)
403 +{
404 + if (fse->index >= 8 || fse->code != V4L2_MBUS_FMT_SGRBG10_1X10)
405 + return -EINVAL;
406 +
407 + fse->min_width = MT9V032_WINDOW_WIDTH_DEF / fse->index;
408 + fse->max_width = fse->min_width;
409 + fse->min_height = MT9V032_WINDOW_HEIGHT_DEF / fse->index;
410 + fse->max_height = fse->min_height;
411 +
412 + return 0;
413 +}
414 +
415 +static int mt9v032_get_format(struct v4l2_subdev *subdev,
416 + struct v4l2_subdev_fh *fh,
417 + struct v4l2_subdev_format *format)
418 +{
419 + struct mt9v032 *mt9v032 = to_mt9v032(subdev);
420 +
421 + format->format = *__mt9v032_get_pad_format(mt9v032, fh, format->pad,
422 + format->which);
423 + return 0;
424 +}
425 +
426 +static int mt9v032_set_format(struct v4l2_subdev *subdev,
427 + struct v4l2_subdev_fh *fh,
428 + struct v4l2_subdev_format *format)
429 +{
430 + struct mt9v032 *mt9v032 = to_mt9v032(subdev);
431 + struct v4l2_mbus_framefmt *__format;
432 + struct v4l2_rect *__crop;
433 + unsigned int width;
434 + unsigned int height;
435 + unsigned int hratio;
436 + unsigned int vratio;
437 +
438 + __crop = __mt9v032_get_pad_crop(mt9v032, fh, format->pad,
439 + format->which);
440 +
441 + /* Clamp the width and height to avoid dividing by zero. */
442 + width = clamp_t(unsigned int, ALIGN(format->format.width, 2),
443 + max(__crop->width / 8, MT9V032_WINDOW_WIDTH_MIN),
444 + __crop->width);
445 + height = clamp_t(unsigned int, ALIGN(format->format.height, 2),
446 + max(__crop->height / 8, MT9V032_WINDOW_HEIGHT_MIN),
447 + __crop->height);
448 +
449 + hratio = DIV_ROUND_CLOSEST(__crop->width, width);
450 + vratio = DIV_ROUND_CLOSEST(__crop->height, height);
451 +
452 + __format = __mt9v032_get_pad_format(mt9v032, fh, format->pad,
453 + format->which);
454 + __format->width = __crop->width / hratio;
455 + __format->height = __crop->height / vratio;
456 +
457 + format->format = *__format;
458 +
459 + return 0;
460 +}
461 +
462 +static int mt9v032_get_crop(struct v4l2_subdev *subdev,
463 + struct v4l2_subdev_fh *fh,
464 + struct v4l2_subdev_crop *crop)
465 +{
466 + struct mt9v032 *mt9v032 = to_mt9v032(subdev);
467 +
468 + crop->rect = *__mt9v032_get_pad_crop(mt9v032, fh, crop->pad,
469 + crop->which);
470 + return 0;
471 +}
472 +
473 +static int mt9v032_set_crop(struct v4l2_subdev *subdev,
474 + struct v4l2_subdev_fh *fh,
475 + struct v4l2_subdev_crop *crop)
476 +{
477 + struct mt9v032 *mt9v032 = to_mt9v032(subdev);
478 + struct v4l2_mbus_framefmt *__format;
479 + struct v4l2_rect *__crop;
480 + struct v4l2_rect rect;
481 +
482 + /* Clamp the crop rectangle boundaries and align them to a non multiple
483 + * of 2 pixels to ensure a GRBG Bayer pattern.
484 + */
485 + rect.left = clamp(ALIGN(crop->rect.left + 1, 2) - 1,
486 + MT9V032_COLUMN_START_MIN,
487 + MT9V032_COLUMN_START_MAX);
488 + rect.top = clamp(ALIGN(crop->rect.top + 1, 2) - 1,
489 + MT9V032_ROW_START_MIN,
490 + MT9V032_ROW_START_MAX);
491 + rect.width = clamp(ALIGN(crop->rect.width, 2),
492 + MT9V032_WINDOW_WIDTH_MIN,
493 + MT9V032_WINDOW_WIDTH_MAX);
494 + rect.height = clamp(ALIGN(crop->rect.height, 2),
495 + MT9V032_WINDOW_HEIGHT_MIN,
496 + MT9V032_WINDOW_HEIGHT_MAX);
497 +
498 + rect.width = min(rect.width, MT9V032_PIXEL_ARRAY_WIDTH - rect.left);
499 + rect.height = min(rect.height, MT9V032_PIXEL_ARRAY_HEIGHT - rect.top);
500 +
501 + __crop = __mt9v032_get_pad_crop(mt9v032, fh, crop->pad, crop->which);
502 +
503 + if (rect.width != __crop->width || rect.height != __crop->height) {
504 + /* Reset the output image size if the crop rectangle size has
505 + * been modified.
506 + */
507 + __format = __mt9v032_get_pad_format(mt9v032, fh, crop->pad,
508 + crop->which);
509 + __format->width = rect.width;
510 + __format->height = rect.height;
511 + }
512 +
513 + *__crop = rect;
514 + crop->rect = rect;
515 +
516 + return 0;
517 +}
518 +
519 +/* -----------------------------------------------------------------------------
520 + * V4L2 subdev control operations
521 + */
522 +
523 +#define V4L2_CID_TEST_PATTERN (V4L2_CID_USER_BASE | 0x1001)
524 +
525 +static int mt9v032_s_ctrl(struct v4l2_ctrl *ctrl)
526 +{
527 + struct mt9v032 *mt9v032 =
528 + container_of(ctrl->handler, struct mt9v032, ctrls);
529 + struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
530 + u16 data;
531 +
532 + switch (ctrl->id) {
533 + case V4L2_CID_AUTOGAIN:
534 + return mt9v032_update_aec_agc(mt9v032, MT9V032_AGC_ENABLE,
535 + ctrl->val);
536 +
537 + case V4L2_CID_GAIN:
538 + return mt9v032_write(client, MT9V032_ANALOG_GAIN, ctrl->val);
539 +
540 + case V4L2_CID_EXPOSURE_AUTO:
541 + return mt9v032_update_aec_agc(mt9v032, MT9V032_AEC_ENABLE,
542 + ctrl->val);
543 +
544 + case V4L2_CID_EXPOSURE:
545 + return mt9v032_write(client, MT9V032_TOTAL_SHUTTER_WIDTH,
546 + ctrl->val);
547 +
548 + case V4L2_CID_TEST_PATTERN:
549 + switch (ctrl->val) {
550 + case 0:
551 + data = 0;
552 + break;
553 + case 1:
554 + data = MT9V032_TEST_PATTERN_GRAY_VERTICAL
555 + | MT9V032_TEST_PATTERN_ENABLE;
556 + break;
557 + case 2:
558 + data = MT9V032_TEST_PATTERN_GRAY_HORIZONTAL
559 + | MT9V032_TEST_PATTERN_ENABLE;
560 + break;
561 + case 3:
562 + data = MT9V032_TEST_PATTERN_GRAY_DIAGONAL
563 + | MT9V032_TEST_PATTERN_ENABLE;
564 + break;
565 + default:
566 + data = (ctrl->val << MT9V032_TEST_PATTERN_DATA_SHIFT)
567 + | MT9V032_TEST_PATTERN_USE_DATA
568 + | MT9V032_TEST_PATTERN_ENABLE
569 + | MT9V032_TEST_PATTERN_FLIP;
570 + break;
571 + }
572 +
573 + return mt9v032_write(client, MT9V032_TEST_PATTERN, data);
574 + }
575 +
576 + return 0;
577 +}
578 +
579 +static struct v4l2_ctrl_ops mt9v032_ctrl_ops = {
580 + .s_ctrl = mt9v032_s_ctrl,
581 +};
582 +
583 +static const struct v4l2_ctrl_config mt9v032_ctrls[] = {
584 + {
585 + .ops = &mt9v032_ctrl_ops,
586 + .id = V4L2_CID_TEST_PATTERN,
587 + .type = V4L2_CTRL_TYPE_INTEGER,
588 + .name = "Test pattern",
589 + .min = 0,
590 + .max = 1023,
591 + .step = 1,
592 + .def = 0,
593 + .flags = 0,
594 + }
595 +};
596 +
597 +/* -----------------------------------------------------------------------------
598 + * V4L2 subdev core operations
599 + */
600 +
601 +static int mt9v032_set_power(struct v4l2_subdev *subdev, int on)
602 +{
603 + struct mt9v032 *mt9v032 = to_mt9v032(subdev);
604 + int ret = 0;
605 +
606 + mutex_lock(&mt9v032->power_lock);
607 +
608 + /* If the power count is modified from 0 to != 0 or from != 0 to 0,
609 + * update the power state.
610 + */
611 + if (mt9v032->power_count == !on) {
612 + ret = __mt9v032_set_power(mt9v032, !!on);
613 + if (ret < 0)
614 + goto done;
615 + }
616 +
617 + /* Update the power count. */
618 + mt9v032->power_count += on ? 1 : -1;
619 + WARN_ON(mt9v032->power_count < 0);
620 +
621 +done:
622 + mutex_unlock(&mt9v032->power_lock);
623 + return ret;
624 +}
625 +
626 +/* -----------------------------------------------------------------------------
627 + * V4L2 subdev internal operations
628 + */
629 +
630 +static int mt9v032_registered(struct v4l2_subdev *subdev)
631 +{
632 + struct i2c_client *client = v4l2_get_subdevdata(subdev);
633 + struct mt9v032 *mt9v032 = to_mt9v032(subdev);
634 + s32 data;
635 + int ret;
636 +
637 + dev_info(&client->dev, "Probing MT9V032 at address 0x%02x\n",
638 + client->addr);
639 +
640 + ret = mt9v032_power_on(mt9v032);
641 + if (ret < 0) {
642 + dev_err(&client->dev, "MT9V032 power up failed\n");
643 + return ret;
644 + }
645 +
646 + /* Read and check the sensor version */
647 + data = mt9v032_read(client, MT9V032_CHIP_VERSION);
648 + if (data != MT9V032_CHIP_ID_REV1 && data != MT9V032_CHIP_ID_REV3) {
649 + dev_err(&client->dev, "MT9V032 not detected, wrong version "
650 + "0x%04x\n", data);
651 + return -ENODEV;
652 + }
653 +
654 + mt9v032_power_off(mt9v032);
655 +
656 + dev_info(&client->dev, "MT9V032 detected at address 0x%02x\n",
657 + client->addr);
658 +
659 + return ret;
660 +}
661 +
662 +static int mt9v032_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
663 +{
664 + struct v4l2_mbus_framefmt *format;
665 + struct v4l2_rect *crop;
666 +
667 + crop = v4l2_subdev_get_try_crop(fh, 0);
668 + crop->left = MT9V032_COLUMN_START_DEF;
669 + crop->top = MT9V032_ROW_START_DEF;
670 + crop->width = MT9V032_WINDOW_WIDTH_DEF;
671 + crop->height = MT9V032_WINDOW_HEIGHT_DEF;
672 +
673 + format = v4l2_subdev_get_try_format(fh, 0);
674 + format->code = V4L2_MBUS_FMT_SGRBG10_1X10;
675 + format->width = MT9V032_WINDOW_WIDTH_DEF;
676 + format->height = MT9V032_WINDOW_HEIGHT_DEF;
677 + format->field = V4L2_FIELD_NONE;
678 + format->colorspace = V4L2_COLORSPACE_SRGB;
679 +
680 + return mt9v032_set_power(subdev, 1);
681 +}
682 +
683 +static int mt9v032_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
684 +{
685 + return mt9v032_set_power(subdev, 0);
686 +}
687 +
688 +static struct v4l2_subdev_core_ops mt9v032_subdev_core_ops = {
689 + .s_power = mt9v032_set_power,
690 +};
691 +
692 +static struct v4l2_subdev_video_ops mt9v032_subdev_video_ops = {
693 + .s_stream = mt9v032_s_stream,
694 +};
695 +
696 +static struct v4l2_subdev_pad_ops mt9v032_subdev_pad_ops = {
697 + .enum_mbus_code = mt9v032_enum_mbus_code,
698 + .enum_frame_size = mt9v032_enum_frame_size,
699 + .get_fmt = mt9v032_get_format,
700 + .set_fmt = mt9v032_set_format,
701 + .get_crop = mt9v032_get_crop,
702 + .set_crop = mt9v032_set_crop,
703 +};
704 +
705 +static struct v4l2_subdev_ops mt9v032_subdev_ops = {
706 + .core = &mt9v032_subdev_core_ops,
707 + .video = &mt9v032_subdev_video_ops,
708 + .pad = &mt9v032_subdev_pad_ops,
709 +};
710 +
711 +static const struct v4l2_subdev_internal_ops mt9v032_subdev_internal_ops = {
712 + .registered = mt9v032_registered,
713 + .open = mt9v032_open,
714 + .close = mt9v032_close,
715 +};
716 +
717 +/* -----------------------------------------------------------------------------
718 + * Driver initialization and probing
719 + */
720 +
721 +static int mt9v032_probe(struct i2c_client *client,
722 + const struct i2c_device_id *did)
723 +{
724 + struct mt9v032 *mt9v032;
725 + unsigned int i;
726 + int ret;
727 +
728 + if (!i2c_check_functionality(client->adapter,
729 + I2C_FUNC_SMBUS_WORD_DATA)) {
730 + dev_warn(&client->adapter->dev,
731 + "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
732 + return -EIO;
733 + }
734 +
735 + mt9v032 = kzalloc(sizeof(*mt9v032), GFP_KERNEL);
736 + if (!mt9v032)
737 + return -ENOMEM;
738 +
739 + mutex_init(&mt9v032->power_lock);
740 + mt9v032->pdata = client->dev.platform_data;
741 +
742 + v4l2_ctrl_handler_init(&mt9v032->ctrls, ARRAY_SIZE(mt9v032_ctrls) + 4);
743 +
744 + v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
745 + V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
746 + v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
747 + V4L2_CID_GAIN, MT9V032_ANALOG_GAIN_MIN,
748 + MT9V032_ANALOG_GAIN_MAX, 1, MT9V032_ANALOG_GAIN_DEF);
749 + v4l2_ctrl_new_std_menu(&mt9v032->ctrls, &mt9v032_ctrl_ops,
750 + V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL, 0,
751 + V4L2_EXPOSURE_AUTO);
752 + v4l2_ctrl_new_std(&mt9v032->ctrls, &mt9v032_ctrl_ops,
753 + V4L2_CID_EXPOSURE, MT9V032_TOTAL_SHUTTER_WIDTH_MIN,
754 + MT9V032_TOTAL_SHUTTER_WIDTH_MAX, 1,
755 + MT9V032_TOTAL_SHUTTER_WIDTH_DEF);
756 +
757 + for (i = 0; i < ARRAY_SIZE(mt9v032_ctrls); ++i)
758 + v4l2_ctrl_new_custom(&mt9v032->ctrls, &mt9v032_ctrls[i], NULL);
759 +
760 + mt9v032->subdev.ctrl_handler = &mt9v032->ctrls;
761 +
762 + if (mt9v032->ctrls.error)
763 + printk(KERN_INFO "%s: control initialization error %d\n",
764 + __func__, mt9v032->ctrls.error);
765 +
766 + mt9v032->crop.left = MT9V032_COLUMN_START_DEF;
767 + mt9v032->crop.top = MT9V032_ROW_START_DEF;
768 + mt9v032->crop.width = MT9V032_WINDOW_WIDTH_DEF;
769 + mt9v032->crop.height = MT9V032_WINDOW_HEIGHT_DEF;
770 +
771 + mt9v032->format.code = V4L2_MBUS_FMT_SGRBG10_1X10;
772 + mt9v032->format.width = MT9V032_WINDOW_WIDTH_DEF;
773 + mt9v032->format.height = MT9V032_WINDOW_HEIGHT_DEF;
774 + mt9v032->format.field = V4L2_FIELD_NONE;
775 + mt9v032->format.colorspace = V4L2_COLORSPACE_SRGB;
776 +
777 + mt9v032->aec_agc = MT9V032_AEC_ENABLE | MT9V032_AGC_ENABLE;
778 +
779 + v4l2_i2c_subdev_init(&mt9v032->subdev, client, &mt9v032_subdev_ops);
780 + mt9v032->subdev.internal_ops = &mt9v032_subdev_internal_ops;
781 + mt9v032->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
782 +
783 + mt9v032->pad.flags = MEDIA_PAD_FL_SOURCE;
784 + ret = media_entity_init(&mt9v032->subdev.entity, 1, &mt9v032->pad, 0);
785 + if (ret < 0)
786 + kfree(mt9v032);
787 +
788 + return ret;
789 +}
790 +
791 +static int mt9v032_remove(struct i2c_client *client)
792 +{
793 + struct v4l2_subdev *subdev = i2c_get_clientdata(client);
794 + struct mt9v032 *mt9v032 = to_mt9v032(subdev);
795 +
796 + v4l2_device_unregister_subdev(subdev);
797 + media_entity_cleanup(&subdev->entity);
798 + kfree(mt9v032);
799 + return 0;
800 +}
801 +
802 +static const struct i2c_device_id mt9v032_id[] = {
803 + { "mt9v032", 0 },
804 + { }
805 +};
806 +MODULE_DEVICE_TABLE(i2c, mt9v032_id);
807 +
808 +static struct i2c_driver mt9v032_driver = {
809 + .driver = {
810 + .name = "mt9v032",
811 + },
812 + .probe = mt9v032_probe,
813 + .remove = mt9v032_remove,
814 + .id_table = mt9v032_id,
815 +};
816 +
817 +static int __init mt9v032_init(void)
818 +{
819 + return i2c_add_driver(&mt9v032_driver);
820 +}
821 +
822 +static void __exit mt9v032_exit(void)
823 +{
824 + i2c_del_driver(&mt9v032_driver);
825 +}
826 +
827 +module_init(mt9v032_init);
828 +module_exit(mt9v032_exit);
829 +
830 +MODULE_DESCRIPTION("Aptina MT9V032 Camera driver");
831 +MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
832 +MODULE_LICENSE("GPL");
833 diff --git a/include/media/mt9v032.h b/include/media/mt9v032.h
834 new file mode 100644
835 index 0000000..5e27f9b
836 --- /dev/null
837 +++ b/include/media/mt9v032.h
838 @@ -0,0 +1,12 @@
839 +#ifndef _MEDIA_MT9V032_H
840 +#define _MEDIA_MT9V032_H
841 +
842 +struct v4l2_subdev;
843 +
844 +struct mt9v032_platform_data {
845 + unsigned int clk_pol:1;
846 +
847 + void (*set_clock)(struct v4l2_subdev *subdev, unsigned int rate);
848 +};
849 +
850 +#endif
851 --
852 1.6.6.1