projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
V4L/DVB (12505): soc_camera_platform: pass device pointer from soc-camera core on...
[GitHub/moto-9609/android_kernel_motorola_exynos9610.git] / drivers / media / video / mt9v022.c
CommitLineData
7397bfbe
GL		 1/*
2 * Driver for MT9V022 CMOS Image Sensor from Micron
3 *
4 * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <linux/videodev2.h>
12#include <linux/slab.h>
13#include <linux/i2c.h>
14#include <linux/delay.h>
15#include <linux/log2.h>
16
17#include <media/v4l2-common.h>
18#include <media/v4l2-chip-ident.h>
19#include <media/soc_camera.h>
20
7397bfbe
GL		 21/* mt9v022 i2c address 0x48, 0x4c, 0x58, 0x5c
22 * The platform has to define i2c_board_info
23 * and call i2c_register_board_info() */
24
25static char *sensor_type;
26module_param(sensor_type, charp, S_IRUGO);
61a2d07d 27MODULE_PARM_DESC(sensor_type, "Sensor type: \"colour\" or \"monochrome\"");
7397bfbe
GL		 28
29/* mt9v022 selected register addresses */
30#define MT9V022_CHIP_VERSION 0x00
31#define MT9V022_COLUMN_START 0x01
32#define MT9V022_ROW_START 0x02
33#define MT9V022_WINDOW_HEIGHT 0x03
34#define MT9V022_WINDOW_WIDTH 0x04
35#define MT9V022_HORIZONTAL_BLANKING 0x05
36#define MT9V022_VERTICAL_BLANKING 0x06
37#define MT9V022_CHIP_CONTROL 0x07
38#define MT9V022_SHUTTER_WIDTH1 0x08
39#define MT9V022_SHUTTER_WIDTH2 0x09
40#define MT9V022_SHUTTER_WIDTH_CTRL 0x0a
41#define MT9V022_TOTAL_SHUTTER_WIDTH 0x0b
42#define MT9V022_RESET 0x0c
43#define MT9V022_READ_MODE 0x0d
44#define MT9V022_MONITOR_MODE 0x0e
45#define MT9V022_PIXEL_OPERATION_MODE 0x0f
46#define MT9V022_LED_OUT_CONTROL 0x1b
47#define MT9V022_ADC_MODE_CONTROL 0x1c
48#define MT9V022_ANALOG_GAIN 0x34
49#define MT9V022_BLACK_LEVEL_CALIB_CTRL 0x47
50#define MT9V022_PIXCLK_FV_LV 0x74
51#define MT9V022_DIGITAL_TEST_PATTERN 0x7f
52#define MT9V022_AEC_AGC_ENABLE 0xAF
53#define MT9V022_MAX_TOTAL_SHUTTER_WIDTH 0xBD
54
55/* Progressive scan, master, defaults */
56#define MT9V022_CHIP_CONTROL_DEFAULT 0x188
57
bb55de3b
GL		 58static const struct soc_camera_data_format mt9v022_colour_formats[] = {
59 /* Order important: first natively supported,
60 * second supported with a GPIO extender */
7397bfbe 61 {
bb55de3b 62 .name = "Bayer (sRGB) 10 bit",
7397bfbe
GL		 63 .depth = 10,
64 .fourcc = V4L2_PIX_FMT_SBGGR16,
65 .colorspace = V4L2_COLORSPACE_SRGB,
66 }, {
bb55de3b
GL		 67 .name = "Bayer (sRGB) 8 bit",
68 .depth = 8,
69 .fourcc = V4L2_PIX_FMT_SBGGR8,
70 .colorspace = V4L2_COLORSPACE_SRGB,
71 }
72};
73
74static const struct soc_camera_data_format mt9v022_monochrome_formats[] = {
75 /* Order important - see above */
76 {
7397bfbe
GL		 77 .name = "Monochrome 10 bit",
78 .depth = 10,
79 .fourcc = V4L2_PIX_FMT_Y16,
80 }, {
81 .name = "Monochrome 8 bit",
82 .depth = 8,
83 .fourcc = V4L2_PIX_FMT_GREY,
84 },
85};
86
87struct mt9v022 {
88 struct i2c_client *client;
89 struct soc_camera_device icd;
7fb0fd05 90 int model; /* V4L2_IDENT_MT9V022* codes from v4l2-chip-ident.h */
7397bfbe 91 u16 chip_control;
7397bfbe
GL		 92};
93
9538e1c2 94static int reg_read(struct i2c_client *client, const u8 reg)
7397bfbe 95{
7397bfbe
GL		 96 s32 data = i2c_smbus_read_word_data(client, reg);
97 return data < 0 ? data : swab16(data);
98}
99
9538e1c2 100static int reg_write(struct i2c_client *client, const u8 reg,
7397bfbe
GL		 101 const u16 data)
102{
9538e1c2 103 return i2c_smbus_write_word_data(client, reg, swab16(data));
7397bfbe
GL		 104}
105
9538e1c2 106static int reg_set(struct i2c_client *client, const u8 reg,
7397bfbe
GL		 107 const u16 data)
108{
109 int ret;
110
9538e1c2 111 ret = reg_read(client, reg);
7397bfbe
GL		 112 if (ret < 0)
113 return ret;
9538e1c2 114 return reg_write(client, reg, ret | data);
7397bfbe
GL		 115}
116
9538e1c2 117static int reg_clear(struct i2c_client *client, const u8 reg,
7397bfbe
GL		 118 const u16 data)
119{
120 int ret;
121
9538e1c2 122 ret = reg_read(client, reg);
7397bfbe
GL		 123 if (ret < 0)
124 return ret;
9538e1c2 125 return reg_write(client, reg, ret & ~data);
7397bfbe
GL		 126}
127
128static int mt9v022_init(struct soc_camera_device *icd)
129{
9538e1c2 130 struct i2c_client *client = to_i2c_client(icd->control);
7397bfbe 131 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
9538e1c2 132 struct soc_camera_link *icl = client->dev.platform_data;
7397bfbe
GL		 133 int ret;
134
81034663 135 if (icl->power) {
9538e1c2 136 ret = icl->power(&client->dev, 1);
81034663
SH		 137 if (ret < 0) {
138 dev_err(icd->vdev->parent,
139 "Platform failed to power-on the camera.\n");
140 return ret;
141 }
142 }
143
144 /*
145 * The camera could have been already on, we hard-reset it additionally,
146 * if available. Soft reset is done in video_probe().
147 */
148 if (icl->reset)
9538e1c2 149 icl->reset(&client->dev);
81034663 150
7397bfbe
GL		 151 /* Almost the default mode: master, parallel, simultaneous, and an
152 * undocumented bit 0x200, which is present in table 7, but not in 8,
153 * plus snapshot mode to disable scan for now */
154 mt9v022->chip_control |= 0x10;
9538e1c2 155 ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control);
11211641 156 if (!ret)
9538e1c2 157 ret = reg_write(client, MT9V022_READ_MODE, 0x300);
7397bfbe
GL		 158
159 /* All defaults */
11211641 160 if (!ret)
7397bfbe 161 /* AEC, AGC on */
9538e1c2 162 ret = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x3);
11211641 163 if (!ret)
9538e1c2 164 ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480);
11211641 165 if (!ret)
7397bfbe 166 /* default - auto */
9538e1c2 167 ret = reg_clear(client, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1);
11211641 168 if (!ret)
9538e1c2 169 ret = reg_write(client, MT9V022_DIGITAL_TEST_PATTERN, 0);
7397bfbe 170
11211641 171 return ret;
7397bfbe
GL		 172}
173
174static int mt9v022_release(struct soc_camera_device *icd)
175{
81034663
SH		 176 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
177 struct soc_camera_link *icl = mt9v022->client->dev.platform_data;
178
179 if (icl->power)
180 icl->power(&mt9v022->client->dev, 0);
181
7397bfbe
GL		 182 return 0;
183}
184
185static int mt9v022_start_capture(struct soc_camera_device *icd)
186{
9538e1c2 187 struct i2c_client *client = to_i2c_client(icd->control);
7397bfbe
GL		 188 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
189 /* Switch to master "normal" mode */
190 mt9v022->chip_control &= ~0x10;
9538e1c2 191 if (reg_write(client, MT9V022_CHIP_CONTROL,
7397bfbe
GL		 192 mt9v022->chip_control) < 0)
193 return -EIO;
194 return 0;
195}
196
197static int mt9v022_stop_capture(struct soc_camera_device *icd)
198{
9538e1c2 199 struct i2c_client *client = to_i2c_client(icd->control);
7397bfbe
GL		 200 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
201 /* Switch to snapshot mode */
202 mt9v022->chip_control |= 0x10;
9538e1c2 203 if (reg_write(client, MT9V022_CHIP_CONTROL,
7397bfbe
GL		 204 mt9v022->chip_control) < 0)
205 return -EIO;
206 return 0;
207}
208
ad5f2e85
GL		 209static int mt9v022_set_bus_param(struct soc_camera_device *icd,
210 unsigned long flags)
7397bfbe 211{
9538e1c2 212 struct i2c_client *client = to_i2c_client(icd->control);
7397bfbe 213 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
9538e1c2 214 struct soc_camera_link *icl = client->dev.platform_data;
ad5f2e85 215 unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK;
7397bfbe 216 int ret;
ad5f2e85 217 u16 pixclk = 0;
7397bfbe
GL		 218
219 /* Only one width bit may be set */
220 if (!is_power_of_2(width_flag))
221 return -EINVAL;
222
e958e27a
SH		 223 if (icl->set_bus_param) {
224 ret = icl->set_bus_param(icl, width_flag);
225 if (ret)
ad5f2e85 226 return ret;
e958e27a
SH		 227 } else {
228 /*
229 * Without board specific bus width settings we only support the
230 * sensors native bus width
231 */
232 if (width_flag != SOCAM_DATAWIDTH_10)
233 return -EINVAL;
ad5f2e85
GL		 234 }
235
bd73b36f
GL		 236 flags = soc_camera_apply_sensor_flags(icl, flags);
237
ad5f2e85
GL		 238 if (flags & SOCAM_PCLK_SAMPLE_RISING)
239 pixclk |= 0x10;
240
241 if (!(flags & SOCAM_HSYNC_ACTIVE_HIGH))
242 pixclk |= 0x1;
243
244 if (!(flags & SOCAM_VSYNC_ACTIVE_HIGH))
245 pixclk |= 0x2;
246
9538e1c2 247 ret = reg_write(client, MT9V022_PIXCLK_FV_LV, pixclk);
ad5f2e85
GL		 248 if (ret < 0)
249 return ret;
250
251 if (!(flags & SOCAM_MASTER))
252 mt9v022->chip_control &= ~0x8;
253
9538e1c2 254 ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control);
ad5f2e85
GL		 255 if (ret < 0)
256 return ret;
257
258 dev_dbg(&icd->dev, "Calculated pixclk 0x%x, chip control 0x%x\n",
259 pixclk, mt9v022->chip_control);
260
261 return 0;
262}
263
264static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd)
265{
266 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
e958e27a
SH		 267 struct soc_camera_link *icl = mt9v022->client->dev.platform_data;
268 unsigned int width_flag;
ad5f2e85 269
e958e27a
SH		 270 if (icl->query_bus_param)
271 width_flag = icl->query_bus_param(icl) &
272 SOCAM_DATAWIDTH_MASK;
273 else
274 width_flag = SOCAM_DATAWIDTH_10;
ad5f2e85
GL		 275
276 return SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING |
277 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW |
278 SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW |
2d9329f3 279 SOCAM_DATA_ACTIVE_HIGH | SOCAM_MASTER | SOCAM_SLAVE |
ad5f2e85
GL		 280 width_flag;
281}
282
09e231b3
GL		 283static int mt9v022_set_crop(struct soc_camera_device *icd,
284 struct v4l2_rect *rect)
ad5f2e85 285{
9538e1c2 286 struct i2c_client *client = to_i2c_client(icd->control);
ad5f2e85
GL		 287 int ret;
288
7397bfbe 289 /* Like in example app. Contradicts the datasheet though */
9538e1c2 290 ret = reg_read(client, MT9V022_AEC_AGC_ENABLE);
7397bfbe
GL		 291 if (ret >= 0) {
292 if (ret & 1) /* Autoexposure */
9538e1c2 293 ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH,
7397bfbe
GL		 294 rect->height + icd->y_skip_top + 43);
295 else
9538e1c2 296 ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH,
7397bfbe
GL		 297 rect->height + icd->y_skip_top + 43);
298 }
299 /* Setup frame format: defaults apart from width and height */
11211641 300 if (!ret)
9538e1c2 301 ret = reg_write(client, MT9V022_COLUMN_START, rect->left);
11211641 302 if (!ret)
9538e1c2 303 ret = reg_write(client, MT9V022_ROW_START, rect->top);
11211641 304 if (!ret)
7397bfbe
GL		 305 /* Default 94, Phytec driver says:
306 * "width + horizontal blank >= 660" */
9538e1c2 307 ret = reg_write(client, MT9V022_HORIZONTAL_BLANKING,
7397bfbe
GL		 308 rect->width > 660 - 43 ? 43 :
309 660 - rect->width);
11211641 310 if (!ret)
9538e1c2 311 ret = reg_write(client, MT9V022_VERTICAL_BLANKING, 45);
11211641 312 if (!ret)
9538e1c2 313 ret = reg_write(client, MT9V022_WINDOW_WIDTH, rect->width);
11211641 314 if (!ret)
9538e1c2 315 ret = reg_write(client, MT9V022_WINDOW_HEIGHT,
7397bfbe
GL		 316 rect->height + icd->y_skip_top);
317
318 if (ret < 0)
319 return ret;
320
321 dev_dbg(&icd->dev, "Frame %ux%u pixel\n", rect->width, rect->height);
322
7397bfbe
GL		 323 return 0;
324}
325
09e231b3
GL		 326static int mt9v022_set_fmt(struct soc_camera_device *icd,
327 struct v4l2_format *f)
328{
329 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
330 struct v4l2_pix_format *pix = &f->fmt.pix;
331 struct v4l2_rect rect = {
332 .left = icd->x_current,
333 .top = icd->y_current,
334 .width = pix->width,
335 .height = pix->height,
336 };
337
338 /* The caller provides a supported format, as verified per call to
339 * icd->try_fmt(), datawidth is from our supported format list */
340 switch (pix->pixelformat) {
341 case V4L2_PIX_FMT_GREY:
342 case V4L2_PIX_FMT_Y16:
343 if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM)
344 return -EINVAL;
345 break;
346 case V4L2_PIX_FMT_SBGGR8:
347 case V4L2_PIX_FMT_SBGGR16:
348 if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC)
349 return -EINVAL;
350 break;
351 case 0:
352 /* No format change, only geometry */
353 break;
354 default:
355 return -EINVAL;
356 }
357
358 /* No support for scaling on this camera, just crop. */
359 return mt9v022_set_crop(icd, &rect);
360}
361
d8fac217
GL		 362static int mt9v022_try_fmt(struct soc_camera_device *icd,
363 struct v4l2_format *f)
7397bfbe 364{
64f5905e
GL		 365 struct v4l2_pix_format *pix = &f->fmt.pix;
366
653dc59b
TP		 367 v4l_bound_align_image(&pix->width, 48, 752, 2 /* ? */,
368 &pix->height, 32 + icd->y_skip_top,
369 480 + icd->y_skip_top, 0, 0);
7397bfbe
GL		 370
371 return 0;
372}
373
374static int mt9v022_get_chip_id(struct soc_camera_device *icd,
aecde8b5 375 struct v4l2_dbg_chip_ident *id)
7397bfbe
GL		 376{
377 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
378
aecde8b5 379 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
7397bfbe
GL		 380 return -EINVAL;
381
aecde8b5 382 if (id->match.addr != mt9v022->client->addr)
7397bfbe
GL		 383 return -ENODEV;
384
385 id->ident = mt9v022->model;
386 id->revision = 0;
387
388 return 0;
389}
390
391#ifdef CONFIG_VIDEO_ADV_DEBUG
392static int mt9v022_get_register(struct soc_camera_device *icd,
aecde8b5 393 struct v4l2_dbg_register *reg)
7397bfbe 394{
9538e1c2 395 struct i2c_client *client = to_i2c_client(icd->control);
7397bfbe 396
aecde8b5 397 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
7397bfbe
GL		 398 return -EINVAL;
399
9538e1c2 400 if (reg->match.addr != client->addr)
7397bfbe
GL		 401 return -ENODEV;
402
aecde8b5 403 reg->size = 2;
9538e1c2 404 reg->val = reg_read(client, reg->reg);
7397bfbe
GL		 405
406 if (reg->val > 0xffff)
407 return -EIO;
408
409 return 0;
410}
411
412static int mt9v022_set_register(struct soc_camera_device *icd,
aecde8b5 413 struct v4l2_dbg_register *reg)
7397bfbe 414{
9538e1c2 415 struct i2c_client *client = to_i2c_client(icd->control);
7397bfbe 416
aecde8b5 417 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
7397bfbe
GL		 418 return -EINVAL;
419
9538e1c2 420 if (reg->match.addr != client->addr)
7397bfbe
GL		 421 return -ENODEV;
422
9538e1c2 423 if (reg_write(client, reg->reg, reg->val) < 0)
7397bfbe
GL		 424 return -EIO;
425
426 return 0;
427}
428#endif
429
4407a463 430static const struct v4l2_queryctrl mt9v022_controls[] = {
7397bfbe
GL		 431 {
432 .id = V4L2_CID_VFLIP,
433 .type = V4L2_CTRL_TYPE_BOOLEAN,
434 .name = "Flip Vertically",
435 .minimum = 0,
436 .maximum = 1,
437 .step = 1,
438 .default_value = 0,
439 }, {
440 .id = V4L2_CID_HFLIP,
441 .type = V4L2_CTRL_TYPE_BOOLEAN,
442 .name = "Flip Horizontally",
443 .minimum = 0,
444 .maximum = 1,
445 .step = 1,
446 .default_value = 0,
447 }, {
448 .id = V4L2_CID_GAIN,
449 .type = V4L2_CTRL_TYPE_INTEGER,
450 .name = "Analog Gain",
451 .minimum = 64,
452 .maximum = 127,
453 .step = 1,
454 .default_value = 64,
455 .flags = V4L2_CTRL_FLAG_SLIDER,
456 }, {
457 .id = V4L2_CID_EXPOSURE,
458 .type = V4L2_CTRL_TYPE_INTEGER,
459 .name = "Exposure",
460 .minimum = 1,
461 .maximum = 255,
462 .step = 1,
463 .default_value = 255,
464 .flags = V4L2_CTRL_FLAG_SLIDER,
465 }, {
466 .id = V4L2_CID_AUTOGAIN,
467 .type = V4L2_CTRL_TYPE_BOOLEAN,
468 .name = "Automatic Gain",
469 .minimum = 0,
470 .maximum = 1,
471 .step = 1,
472 .default_value = 1,
473 }, {
474 .id = V4L2_CID_EXPOSURE_AUTO,
475 .type = V4L2_CTRL_TYPE_BOOLEAN,
476 .name = "Automatic Exposure",
477 .minimum = 0,
478 .maximum = 1,
479 .step = 1,
480 .default_value = 1,
481 }
482};
483
26f1b942
GL		 484static int mt9v022_video_probe(struct soc_camera_device *);
485static void mt9v022_video_remove(struct soc_camera_device *);
486static int mt9v022_get_control(struct soc_camera_device *, struct v4l2_control *);
487static int mt9v022_set_control(struct soc_camera_device *, struct v4l2_control *);
7397bfbe
GL		 488
489static struct soc_camera_ops mt9v022_ops = {
490 .owner = THIS_MODULE,
26f1b942
GL		 491 .probe = mt9v022_video_probe,
492 .remove = mt9v022_video_remove,
7397bfbe
GL		 493 .init = mt9v022_init,
494 .release = mt9v022_release,
495 .start_capture = mt9v022_start_capture,
496 .stop_capture = mt9v022_stop_capture,
09e231b3 497 .set_crop = mt9v022_set_crop,
d8fac217
GL		 498 .set_fmt = mt9v022_set_fmt,
499 .try_fmt = mt9v022_try_fmt,
ad5f2e85
GL		 500 .set_bus_param = mt9v022_set_bus_param,
501 .query_bus_param = mt9v022_query_bus_param,
7397bfbe
GL		 502 .controls = mt9v022_controls,
503 .num_controls = ARRAY_SIZE(mt9v022_controls),
504 .get_control = mt9v022_get_control,
505 .set_control = mt9v022_set_control,
506 .get_chip_id = mt9v022_get_chip_id,
507#ifdef CONFIG_VIDEO_ADV_DEBUG
508 .get_register = mt9v022_get_register,
509 .set_register = mt9v022_set_register,
510#endif
511};
512
513static int mt9v022_get_control(struct soc_camera_device *icd,
514 struct v4l2_control *ctrl)
515{
9538e1c2 516 struct i2c_client *client = to_i2c_client(icd->control);
7397bfbe
GL		 517 int data;
518
519 switch (ctrl->id) {
520 case V4L2_CID_VFLIP:
9538e1c2 521 data = reg_read(client, MT9V022_READ_MODE);
7397bfbe
GL		 522 if (data < 0)
523 return -EIO;
524 ctrl->value = !!(data & 0x10);
525 break;
526 case V4L2_CID_HFLIP:
9538e1c2 527 data = reg_read(client, MT9V022_READ_MODE);
7397bfbe
GL		 528 if (data < 0)
529 return -EIO;
530 ctrl->value = !!(data & 0x20);
531 break;
532 case V4L2_CID_EXPOSURE_AUTO:
9538e1c2 533 data = reg_read(client, MT9V022_AEC_AGC_ENABLE);
7397bfbe
GL		 534 if (data < 0)
535 return -EIO;
536 ctrl->value = !!(data & 0x1);
537 break;
538 case V4L2_CID_AUTOGAIN:
9538e1c2 539 data = reg_read(client, MT9V022_AEC_AGC_ENABLE);
7397bfbe
GL		 540 if (data < 0)
541 return -EIO;
542 ctrl->value = !!(data & 0x2);
543 break;
544 }
545 return 0;
546}
547
548static int mt9v022_set_control(struct soc_camera_device *icd,
549 struct v4l2_control *ctrl)
550{
551 int data;
9538e1c2 552 struct i2c_client *client = to_i2c_client(icd->control);
7397bfbe
GL		 553 const struct v4l2_queryctrl *qctrl;
554
555 qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id);
556
557 if (!qctrl)
558 return -EINVAL;
559
560 switch (ctrl->id) {
561 case V4L2_CID_VFLIP:
562 if (ctrl->value)
9538e1c2 563 data = reg_set(client, MT9V022_READ_MODE, 0x10);
7397bfbe 564 else
9538e1c2 565 data = reg_clear(client, MT9V022_READ_MODE, 0x10);
7397bfbe
GL		 566 if (data < 0)
567 return -EIO;
568 break;
569 case V4L2_CID_HFLIP:
570 if (ctrl->value)
9538e1c2 571 data = reg_set(client, MT9V022_READ_MODE, 0x20);
7397bfbe 572 else
9538e1c2 573 data = reg_clear(client, MT9V022_READ_MODE, 0x20);
7397bfbe
GL		 574 if (data < 0)
575 return -EIO;
576 break;
577 case V4L2_CID_GAIN:
578 /* mt9v022 has minimum == default */
579 if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
580 return -EINVAL;
581 else {
582 unsigned long range = qctrl->maximum - qctrl->minimum;
583 /* Datasheet says 16 to 64. autogain only works properly
584 * after setting gain to maximum 14. Larger values
585 * produce "white fly" noise effect. On the whole,
586 * manually setting analog gain does no good. */
587 unsigned long gain = ((ctrl->value - qctrl->minimum) *
588 10 + range / 2) / range + 4;
589 if (gain >= 32)
590 gain &= ~1;
591 /* The user wants to set gain manually, hope, she
592 * knows, what she's doing... Switch AGC off. */
593
9538e1c2 594 if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2) < 0)
7397bfbe
GL		 595 return -EIO;
596
597 dev_info(&icd->dev, "Setting gain from %d to %lu\n",
9538e1c2
GL		 598 reg_read(client, MT9V022_ANALOG_GAIN), gain);
599 if (reg_write(client, MT9V022_ANALOG_GAIN, gain) < 0)
7397bfbe
GL		 600 return -EIO;
601 icd->gain = ctrl->value;
602 }
603 break;
604 case V4L2_CID_EXPOSURE:
605 /* mt9v022 has maximum == default */
606 if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum)
607 return -EINVAL;
608 else {
609 unsigned long range = qctrl->maximum - qctrl->minimum;
610 unsigned long shutter = ((ctrl->value - qctrl->minimum) *
611 479 + range / 2) / range + 1;
612 /* The user wants to set shutter width manually, hope,
613 * she knows, what she's doing... Switch AEC off. */
614
9538e1c2 615 if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1) < 0)
7397bfbe
GL		 616 return -EIO;
617
618 dev_dbg(&icd->dev, "Shutter width from %d to %lu\n",
9538e1c2 619 reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH),
7397bfbe 620 shutter);
9538e1c2 621 if (reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH,
7397bfbe
GL		 622 shutter) < 0)
623 return -EIO;
624 icd->exposure = ctrl->value;
625 }
626 break;
627 case V4L2_CID_AUTOGAIN:
628 if (ctrl->value)
9538e1c2 629 data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x2);
7397bfbe 630 else
9538e1c2 631 data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2);
7397bfbe
GL		 632 if (data < 0)
633 return -EIO;
634 break;
635 case V4L2_CID_EXPOSURE_AUTO:
636 if (ctrl->value)
9538e1c2 637 data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x1);
7397bfbe 638 else
9538e1c2 639 data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1);
7397bfbe
GL		 640 if (data < 0)
641 return -EIO;
642 break;
643 }
644 return 0;
645}
646
647/* Interface active, can use i2c. If it fails, it can indeed mean, that
648 * this wasn't our capture interface, so, we wait for the right one */
649static int mt9v022_video_probe(struct soc_camera_device *icd)
650{
9538e1c2 651 struct i2c_client *client = to_i2c_client(icd->control);
7397bfbe 652 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
9538e1c2 653 struct soc_camera_link *icl = client->dev.platform_data;
7397bfbe
GL		 654 s32 data;
655 int ret;
e958e27a 656 unsigned long flags;
7397bfbe
GL		 657
658 if (!icd->dev.parent ||
659 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
660 return -ENODEV;
661
662 /* Read out the chip version register */
9538e1c2 663 data = reg_read(client, MT9V022_CHIP_VERSION);
7397bfbe
GL		 664
665 /* must be 0x1311 or 0x1313 */
666 if (data != 0x1311 && data != 0x1313) {
667 ret = -ENODEV;
668 dev_info(&icd->dev, "No MT9V022 detected, ID register 0x%x\n",
669 data);
670 goto ei2c;
671 }
672
673 /* Soft reset */
9538e1c2 674 ret = reg_write(client, MT9V022_RESET, 1);
7397bfbe
GL		 675 if (ret < 0)
676 goto ei2c;
677 /* 15 clock cycles */
678 udelay(200);
9538e1c2 679 if (reg_read(client, MT9V022_RESET)) {
7397bfbe
GL		 680 dev_err(&icd->dev, "Resetting MT9V022 failed!\n");
681 goto ei2c;
682 }
683
684 /* Set monochrome or colour sensor type */
685 if (sensor_type && (!strcmp("colour", sensor_type) ||
686 !strcmp("color", sensor_type))) {
9538e1c2 687 ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11);
7397bfbe 688 mt9v022->model = V4L2_IDENT_MT9V022IX7ATC;
26f1b942 689 icd->formats = mt9v022_colour_formats;
7397bfbe 690 } else {
9538e1c2 691 ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 0x11);
7397bfbe 692 mt9v022->model = V4L2_IDENT_MT9V022IX7ATM;
26f1b942 693 icd->formats = mt9v022_monochrome_formats;
7397bfbe
GL		 694 }
695
e958e27a
SH		 696 if (ret < 0)
697 goto eisis;
698
699 icd->num_formats = 0;
700
701 /*
702 * This is a 10bit sensor, so by default we only allow 10bit.
703 * The platform may support different bus widths due to
704 * different routing of the data lines.
705 */
706 if (icl->query_bus_param)
707 flags = icl->query_bus_param(icl);
708 else
709 flags = SOCAM_DATAWIDTH_10;
710
711 if (flags & SOCAM_DATAWIDTH_10)
712 icd->num_formats++;
713 else
714 icd->formats++;
715
716 if (flags & SOCAM_DATAWIDTH_8)
717 icd->num_formats++;
718
719 ret = soc_camera_video_start(icd);
7397bfbe
GL		 720 if (ret < 0)
721 goto eisis;
722
723 dev_info(&icd->dev, "Detected a MT9V022 chip ID %x, %s sensor\n",
724 data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ?
725 "monochrome" : "colour");
726
727 return 0;
728
729eisis:
730ei2c:
731 return ret;
732}
733
734static void mt9v022_video_remove(struct soc_camera_device *icd)
735{
736 struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd);
594bb46d 737 struct soc_camera_link *icl = mt9v022->client->dev.platform_data;
7397bfbe
GL		 738
739 dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9v022->client->addr,
a85bdace
GL		 740 icd->dev.parent, icd->vdev);
741 soc_camera_video_stop(icd);
594bb46d
GL		 742 if (icl->free_bus)
743 icl->free_bus(icl);
7397bfbe
GL		 744}
745
d2653e92
JD		 746static int mt9v022_probe(struct i2c_client *client,
747 const struct i2c_device_id *did)
7397bfbe
GL		 748{
749 struct mt9v022 *mt9v022;
750 struct soc_camera_device *icd;
751 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
752 struct soc_camera_link *icl = client->dev.platform_data;
753 int ret;
754
755 if (!icl) {
756 dev_err(&client->dev, "MT9V022 driver needs platform data\n");
757 return -EINVAL;
758 }
759
760 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
761 dev_warn(&adapter->dev,
762 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
763 return -EIO;
764 }
765
766 mt9v022 = kzalloc(sizeof(struct mt9v022), GFP_KERNEL);
767 if (!mt9v022)
768 return -ENOMEM;
769
770 mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT;
771 mt9v022->client = client;
772 i2c_set_clientdata(client, mt9v022);
773
774 icd = &mt9v022->icd;
7397bfbe
GL		 775 icd->ops = &mt9v022_ops;
776 icd->control = &client->dev;
777 icd->x_min = 1;
778 icd->y_min = 4;
779 icd->x_current = 1;
780 icd->y_current = 4;
781 icd->width_min = 48;
782 icd->width_max = 752;
783 icd->height_min = 32;
784 icd->height_max = 480;
785 icd->y_skip_top = 1;
786 icd->iface = icl->bus_id;
7397bfbe
GL		 787
788 ret = soc_camera_device_register(icd);
789 if (ret)
790 goto eisdr;
791
792 return 0;
793
794eisdr:
7397bfbe
GL		 795 kfree(mt9v022);
796 return ret;
797}
798
799static int mt9v022_remove(struct i2c_client *client)
800{
801 struct mt9v022 *mt9v022 = i2c_get_clientdata(client);
802
803 soc_camera_device_unregister(&mt9v022->icd);
7397bfbe
GL		 804 kfree(mt9v022);
805
806 return 0;
807}
3760f736
JD		 808static const struct i2c_device_id mt9v022_id[] = {
809 { "mt9v022", 0 },
810 { }
811};
812MODULE_DEVICE_TABLE(i2c, mt9v022_id);
813
7397bfbe
GL		 814static struct i2c_driver mt9v022_i2c_driver = {
815 .driver = {
816 .name = "mt9v022",
817 },
818 .probe = mt9v022_probe,
819 .remove = mt9v022_remove,
3760f736 820 .id_table = mt9v022_id,
7397bfbe
GL		 821};
822
823static int __init mt9v022_mod_init(void)
824{
825 return i2c_add_driver(&mt9v022_i2c_driver);
826}
827
828static void __exit mt9v022_mod_exit(void)
829{
830 i2c_del_driver(&mt9v022_i2c_driver);
831}
832
833module_init(mt9v022_mod_init);
834module_exit(mt9v022_mod_exit);
835
836MODULE_DESCRIPTION("Micron MT9V022 Camera driver");
837MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>");
838MODULE_LICENSE("GPL");