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V4L/DVB (8685): mt9m001, mt9v022: Simplify return code checking
[net-next-2.6.git] / drivers / media / video / mt9m111.c
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77110abb
RJ		 1/*
2 * Driver for MT9M111 CMOS Image Sensor from Micron
3 *
4 * Copyright (C) 2008, Robert Jarzmik <robert.jarzmik@free.fr>
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#include <linux/videodev2.h>
11#include <linux/slab.h>
12#include <linux/i2c.h>
13#include <linux/log2.h>
14#include <linux/gpio.h>
15#include <linux/delay.h>
16
17#include <media/v4l2-common.h>
18#include <media/v4l2-chip-ident.h>
19#include <media/soc_camera.h>
20
21/*
22 * mt9m111 i2c address is 0x5d or 0x48 (depending on SAddr pin)
23 * The platform has to define i2c_board_info and call i2c_register_board_info()
24 */
25
26/* mt9m111: Sensor register addresses */
27#define MT9M111_CHIP_VERSION 0x000
28#define MT9M111_ROW_START 0x001
29#define MT9M111_COLUMN_START 0x002
30#define MT9M111_WINDOW_HEIGHT 0x003
31#define MT9M111_WINDOW_WIDTH 0x004
32#define MT9M111_HORIZONTAL_BLANKING_B 0x005
33#define MT9M111_VERTICAL_BLANKING_B 0x006
34#define MT9M111_HORIZONTAL_BLANKING_A 0x007
35#define MT9M111_VERTICAL_BLANKING_A 0x008
36#define MT9M111_SHUTTER_WIDTH 0x009
37#define MT9M111_ROW_SPEED 0x00a
38#define MT9M111_EXTRA_DELAY 0x00b
39#define MT9M111_SHUTTER_DELAY 0x00c
40#define MT9M111_RESET 0x00d
41#define MT9M111_READ_MODE_B 0x020
42#define MT9M111_READ_MODE_A 0x021
43#define MT9M111_FLASH_CONTROL 0x023
44#define MT9M111_GREEN1_GAIN 0x02b
45#define MT9M111_BLUE_GAIN 0x02c
46#define MT9M111_RED_GAIN 0x02d
47#define MT9M111_GREEN2_GAIN 0x02e
48#define MT9M111_GLOBAL_GAIN 0x02f
49#define MT9M111_CONTEXT_CONTROL 0x0c8
50#define MT9M111_PAGE_MAP 0x0f0
51#define MT9M111_BYTE_WISE_ADDR 0x0f1
52
53#define MT9M111_RESET_SYNC_CHANGES (1 << 15)
54#define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
55#define MT9M111_RESET_SHOW_BAD_FRAMES (1 << 8)
56#define MT9M111_RESET_RESET_SOC (1 << 5)
57#define MT9M111_RESET_OUTPUT_DISABLE (1 << 4)
58#define MT9M111_RESET_CHIP_ENABLE (1 << 3)
59#define MT9M111_RESET_ANALOG_STANDBY (1 << 2)
60#define MT9M111_RESET_RESTART_FRAME (1 << 1)
61#define MT9M111_RESET_RESET_MODE (1 << 0)
62
63#define MT9M111_RMB_MIRROR_COLS (1 << 1)
64#define MT9M111_RMB_MIRROR_ROWS (1 << 0)
65#define MT9M111_CTXT_CTRL_RESTART (1 << 15)
66#define MT9M111_CTXT_CTRL_DEFECTCOR_B (1 << 12)
67#define MT9M111_CTXT_CTRL_RESIZE_B (1 << 10)
68#define MT9M111_CTXT_CTRL_CTRL2_B (1 << 9)
69#define MT9M111_CTXT_CTRL_GAMMA_B (1 << 8)
70#define MT9M111_CTXT_CTRL_XENON_EN (1 << 7)
71#define MT9M111_CTXT_CTRL_READ_MODE_B (1 << 3)
72#define MT9M111_CTXT_CTRL_LED_FLASH_EN (1 << 2)
73#define MT9M111_CTXT_CTRL_VBLANK_SEL_B (1 << 1)
74#define MT9M111_CTXT_CTRL_HBLANK_SEL_B (1 << 0)
75/*
76 * mt9m111: Colorpipe register addresses (0x100..0x1ff)
77 */
78#define MT9M111_OPER_MODE_CTRL 0x106
79#define MT9M111_OUTPUT_FORMAT_CTRL 0x108
80#define MT9M111_REDUCER_XZOOM_B 0x1a0
81#define MT9M111_REDUCER_XSIZE_B 0x1a1
82#define MT9M111_REDUCER_YZOOM_B 0x1a3
83#define MT9M111_REDUCER_YSIZE_B 0x1a4
84#define MT9M111_REDUCER_XZOOM_A 0x1a6
85#define MT9M111_REDUCER_XSIZE_A 0x1a7
86#define MT9M111_REDUCER_YZOOM_A 0x1a9
87#define MT9M111_REDUCER_YSIZE_A 0x1aa
88
89#define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a
90#define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
91
92#define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
93
94
95#define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14)
96#define MT9M111_OUTFMT_BYPASS_IFP (1 << 10)
97#define MT9M111_OUTFMT_INV_PIX_CLOCK (1 << 9)
98#define MT9M111_OUTFMT_RGB (1 << 8)
99#define MT9M111_OUTFMT_RGB565 (0x0 << 6)
100#define MT9M111_OUTFMT_RGB555 (0x1 << 6)
101#define MT9M111_OUTFMT_RGB444x (0x2 << 6)
102#define MT9M111_OUTFMT_RGBx444 (0x3 << 6)
103#define MT9M111_OUTFMT_TST_RAMP_OFF (0x0 << 4)
104#define MT9M111_OUTFMT_TST_RAMP_COL (0x1 << 4)
105#define MT9M111_OUTFMT_TST_RAMP_ROW (0x2 << 4)
106#define MT9M111_OUTFMT_TST_RAMP_FRAME (0x3 << 4)
107#define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3)
108#define MT9M111_OUTFMT_AVG_CHROMA (1 << 2)
109#define MT9M111_OUTFMT_SWAP_YCbCr_C_Y (1 << 1)
110#define MT9M111_OUTFMT_SWAP_RGB_EVEN (1 << 1)
111#define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr (1 << 0)
112/*
113 * mt9m111: Camera control register addresses (0x200..0x2ff not implemented)
114 */
115
116#define reg_read(reg) mt9m111_reg_read(icd, MT9M111_##reg)
117#define reg_write(reg, val) mt9m111_reg_write(icd, MT9M111_##reg, (val))
118#define reg_set(reg, val) mt9m111_reg_set(icd, MT9M111_##reg, (val))
119#define reg_clear(reg, val) mt9m111_reg_clear(icd, MT9M111_##reg, (val))
120
121#define MT9M111_MIN_DARK_ROWS 8
122#define MT9M111_MIN_DARK_COLS 24
123#define MT9M111_MAX_HEIGHT 1024
124#define MT9M111_MAX_WIDTH 1280
125
126#define COL_FMT(_name, _depth, _fourcc, _colorspace) \
127 { .name = _name, .depth = _depth, .fourcc = _fourcc, \
128 .colorspace = _colorspace }
129#define RGB_FMT(_name, _depth, _fourcc) \
130 COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_SRGB)
131
132static const struct soc_camera_data_format mt9m111_colour_formats[] = {
133 COL_FMT("YCrYCb 8 bit", 8, V4L2_PIX_FMT_YUYV, V4L2_COLORSPACE_JPEG),
134 RGB_FMT("RGB 565", 16, V4L2_PIX_FMT_RGB565),
135 RGB_FMT("RGB 555", 16, V4L2_PIX_FMT_RGB555),
136 RGB_FMT("Bayer (sRGB) 10 bit", 10, V4L2_PIX_FMT_SBGGR16),
137 RGB_FMT("Bayer (sRGB) 8 bit", 8, V4L2_PIX_FMT_SBGGR8),
138};
139
140enum mt9m111_context {
141 HIGHPOWER = 0,
142 LOWPOWER,
143};
144
145struct mt9m111 {
146 struct i2c_client *client;
147 struct soc_camera_device icd;
148 int model; /* V4L2_IDENT_MT9M111* codes from v4l2-chip-ident.h */
149 enum mt9m111_context context;
150 unsigned int left, top, width, height;
151 u32 pixfmt;
152 unsigned char autoexposure;
153 unsigned char datawidth;
154 unsigned int powered:1;
155 unsigned int hflip:1;
156 unsigned int vflip:1;
157 unsigned int swap_rgb_even_odd:1;
158 unsigned int swap_rgb_red_blue:1;
159 unsigned int swap_yuv_y_chromas:1;
160 unsigned int swap_yuv_cb_cr:1;
161};
162
163static int reg_page_map_set(struct i2c_client *client, const u16 reg)
164{
165 int ret;
166 u16 page;
167 static int lastpage = -1; /* PageMap cache value */
168
169 page = (reg >> 8);
170 if (page == lastpage)
171 return 0;
172 if (page > 2)
173 return -EINVAL;
174
175 ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
176 if (ret >= 0)
177 lastpage = page;
178 return ret;
179}
180
181static int mt9m111_reg_read(struct soc_camera_device *icd, const u16 reg)
182{
183 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
184 struct i2c_client *client = mt9m111->client;
185 int ret;
186
187 ret = reg_page_map_set(client, reg);
188 if (!ret)
189 ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff)));
190
191 dev_dbg(&icd->dev, "read reg.%03x -> %04x\n", reg, ret);
192 return ret;
193}
194
195static int mt9m111_reg_write(struct soc_camera_device *icd, const u16 reg,
196 const u16 data)
197{
198 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
199 struct i2c_client *client = mt9m111->client;
200 int ret;
201
202 ret = reg_page_map_set(client, reg);
203 if (ret >= 0)
204 ret = i2c_smbus_write_word_data(mt9m111->client, (reg & 0xff),
205 swab16(data));
206 dev_dbg(&icd->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
207 return ret;
208}
209
210static int mt9m111_reg_set(struct soc_camera_device *icd, const u16 reg,
211 const u16 data)
212{
213 int ret;
214
215 ret = mt9m111_reg_read(icd, reg);
216 if (ret >= 0)
217 ret = mt9m111_reg_write(icd, reg, ret | data);
218 return ret;
219}
220
221static int mt9m111_reg_clear(struct soc_camera_device *icd, const u16 reg,
222 const u16 data)
223{
224 int ret;
225
226 ret = mt9m111_reg_read(icd, reg);
227 return mt9m111_reg_write(icd, reg, ret & ~data);
228}
229
230static int mt9m111_set_context(struct soc_camera_device *icd,
231 enum mt9m111_context ctxt)
232{
233 int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
234 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
235 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
236 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
237 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
238 int valA = MT9M111_CTXT_CTRL_RESTART;
239
240 if (ctxt == HIGHPOWER)
241 return reg_write(CONTEXT_CONTROL, valB);
242 else
243 return reg_write(CONTEXT_CONTROL, valA);
244}
245
246static int mt9m111_setup_rect(struct soc_camera_device *icd)
247{
248 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
249 int ret = 0, is_raw_format;
250 int width = mt9m111->width;
251 int height = mt9m111->height;
252
253 if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8)
254 || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16))
255 is_raw_format = 1;
256 else
257 is_raw_format = 0;
258
259 if (ret >= 0)
260 ret = reg_write(COLUMN_START, mt9m111->left);
261 if (ret >= 0)
262 ret = reg_write(ROW_START, mt9m111->top);
263
264 if (is_raw_format) {
265 if (ret >= 0)
266 ret = reg_write(WINDOW_WIDTH, width);
267 if (ret >= 0)
268 ret = reg_write(WINDOW_HEIGHT, height);
269 } else {
270 if (ret >= 0)
271 ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
272 if (ret >= 0)
273 ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
274 if (ret >= 0)
275 ret = reg_write(REDUCER_XSIZE_B, width);
276 if (ret >= 0)
277 ret = reg_write(REDUCER_YSIZE_B, height);
278 if (ret >= 0)
279 ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
280 if (ret >= 0)
281 ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
282 if (ret >= 0)
283 ret = reg_write(REDUCER_XSIZE_A, width);
284 if (ret >= 0)
285 ret = reg_write(REDUCER_YSIZE_A, height);
286 }
287
288 return ret;
289}
290
291static int mt9m111_setup_pixfmt(struct soc_camera_device *icd, u16 outfmt)
292{
293 int ret;
294
295 ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
296 if (ret >= 0)
297 ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
298 return ret;
299}
300
301static int mt9m111_setfmt_bayer8(struct soc_camera_device *icd)
302{
303 return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_PROCESSED_BAYER);
304}
305
306static int mt9m111_setfmt_bayer10(struct soc_camera_device *icd)
307{
308
309 return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_BYPASS_IFP);
310}
311
312static int mt9m111_setfmt_rgb565(struct soc_camera_device *icd)
313{
314 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
315 int val = 0;
316
317 if (mt9m111->swap_rgb_red_blue)
318 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
319 if (mt9m111->swap_rgb_even_odd)
320 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
321 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
322
323 return mt9m111_setup_pixfmt(icd, val);
324}
325
326static int mt9m111_setfmt_rgb555(struct soc_camera_device *icd)
327{
328 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
329 int val = 0;
330
331 if (mt9m111->swap_rgb_red_blue)
332 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
333 if (mt9m111->swap_rgb_even_odd)
334 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
335 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
336
337 return mt9m111_setup_pixfmt(icd, val);
338}
339
340static int mt9m111_setfmt_yuv(struct soc_camera_device *icd)
341{
342 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
343 int val = 0;
344
345 if (mt9m111->swap_yuv_cb_cr)
346 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
347 if (mt9m111->swap_yuv_y_chromas)
348 val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
349
350 return mt9m111_setup_pixfmt(icd, val);
351}
352
353static int mt9m111_enable(struct soc_camera_device *icd)
354{
355 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
356 int ret;
357
358 ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
359 if (ret >= 0)
360 mt9m111->powered = 1;
361 return ret;
362}
363
364static int mt9m111_disable(struct soc_camera_device *icd)
365{
366 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
367 int ret;
368
369 ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
370 if (ret >= 0)
371 mt9m111->powered = 0;
372 return ret;
373}
374
375static int mt9m111_reset(struct soc_camera_device *icd)
376{
377 int ret;
378
379 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
380 if (ret >= 0)
381 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
382 if (ret >= 0)
383 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
384 | MT9M111_RESET_RESET_SOC);
385 return ret;
386}
387
388static int mt9m111_start_capture(struct soc_camera_device *icd)
389{
390 return 0;
391}
392
393static int mt9m111_stop_capture(struct soc_camera_device *icd)
394{
395 return 0;
396}
397
398static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
399{
400 return SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
401 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
402 SOCAM_DATAWIDTH_8;
403}
404
405static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
406{
407 return 0;
408}
409
410static int mt9m111_set_pixfmt(struct soc_camera_device *icd, u32 pixfmt)
411{
412 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
413 int ret = 0;
414
415 switch (pixfmt) {
416 case V4L2_PIX_FMT_SBGGR8:
417 ret = mt9m111_setfmt_bayer8(icd);
418 break;
419 case V4L2_PIX_FMT_SBGGR16:
420 ret = mt9m111_setfmt_bayer10(icd);
421 break;
422 case V4L2_PIX_FMT_RGB555:
423 ret = mt9m111_setfmt_rgb555(icd);
424 break;
425 case V4L2_PIX_FMT_RGB565:
426 ret = mt9m111_setfmt_rgb565(icd);
427 break;
428 case V4L2_PIX_FMT_YUYV:
429 ret = mt9m111_setfmt_yuv(icd);
430 break;
431 default:
432 dev_err(&icd->dev, "Pixel format not handled : %x\n", pixfmt);
433 ret = -EINVAL;
434 }
435
436 if (ret >= 0)
437 mt9m111->pixfmt = pixfmt;
438
439 return ret;
440}
441
442static int mt9m111_set_fmt_cap(struct soc_camera_device *icd,
443 __u32 pixfmt, struct v4l2_rect *rect)
444{
445 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
446 int ret = 0;
447
448 mt9m111->left = rect->left;
449 mt9m111->top = rect->top;
450 mt9m111->width = rect->width;
451 mt9m111->height = rect->height;
452
453 dev_dbg(&icd->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n",
454 __func__, pixfmt, mt9m111->left, mt9m111->top, mt9m111->width,
455 mt9m111->height);
456
457 ret = mt9m111_setup_rect(icd);
458 if (ret >= 0)
459 ret = mt9m111_set_pixfmt(icd, pixfmt);
460 return ret < 0 ? ret : 0;
461}
462
463static int mt9m111_try_fmt_cap(struct soc_camera_device *icd,
464 struct v4l2_format *f)
465{
466 if (f->fmt.pix.height > MT9M111_MAX_HEIGHT)
467 f->fmt.pix.height = MT9M111_MAX_HEIGHT;
468 if (f->fmt.pix.width > MT9M111_MAX_WIDTH)
469 f->fmt.pix.width = MT9M111_MAX_WIDTH;
470
471 return 0;
472}
473
474static int mt9m111_get_chip_id(struct soc_camera_device *icd,
475 struct v4l2_chip_ident *id)
476{
477 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
478
479 if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR)
480 return -EINVAL;
481
482 if (id->match_chip != mt9m111->client->addr)
483 return -ENODEV;
484
485 id->ident = mt9m111->model;
486 id->revision = 0;
487
488 return 0;
489}
490
491#ifdef CONFIG_VIDEO_ADV_DEBUG
492static int mt9m111_get_register(struct soc_camera_device *icd,
493 struct v4l2_register *reg)
494{
495 int val;
496
497 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
498
499 if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
500 return -EINVAL;
501 if (reg->match_chip != mt9m111->client->addr)
502 return -ENODEV;
503
504 val = mt9m111_reg_read(icd, reg->reg);
505 reg->val = (u64)val;
506
507 if (reg->val > 0xffff)
508 return -EIO;
509
510 return 0;
511}
512
513static int mt9m111_set_register(struct soc_camera_device *icd,
514 struct v4l2_register *reg)
515{
516 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
517
518 if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
519 return -EINVAL;
520
521 if (reg->match_chip != mt9m111->client->addr)
522 return -ENODEV;
523
524 if (mt9m111_reg_write(icd, reg->reg, reg->val) < 0)
525 return -EIO;
526
527 return 0;
528}
529#endif
530
531static const struct v4l2_queryctrl mt9m111_controls[] = {
532 {
533 .id = V4L2_CID_VFLIP,
534 .type = V4L2_CTRL_TYPE_BOOLEAN,
535 .name = "Flip Verticaly",
536 .minimum = 0,
537 .maximum = 1,
538 .step = 1,
539 .default_value = 0,
540 }, {
541 .id = V4L2_CID_HFLIP,
542 .type = V4L2_CTRL_TYPE_BOOLEAN,
543 .name = "Flip Horizontaly",
544 .minimum = 0,
545 .maximum = 1,
546 .step = 1,
547 .default_value = 0,
548 }, { /* gain = 1/32*val (=>gain=1 if val==32) */
549 .id = V4L2_CID_GAIN,
550 .type = V4L2_CTRL_TYPE_INTEGER,
551 .name = "Gain",
552 .minimum = 0,
553 .maximum = 63 * 2 * 2,
554 .step = 1,
555 .default_value = 32,
556 .flags = V4L2_CTRL_FLAG_SLIDER,
557 }, {
558 .id = V4L2_CID_EXPOSURE_AUTO,
559 .type = V4L2_CTRL_TYPE_BOOLEAN,
560 .name = "Auto Exposure",
561 .minimum = 0,
562 .maximum = 1,
563 .step = 1,
564 .default_value = 1,
565 }
566};
567
568static int mt9m111_video_probe(struct soc_camera_device *);
569static void mt9m111_video_remove(struct soc_camera_device *);
570static int mt9m111_get_control(struct soc_camera_device *,
571 struct v4l2_control *);
572static int mt9m111_set_control(struct soc_camera_device *,
573 struct v4l2_control *);
574static int mt9m111_resume(struct soc_camera_device *icd);
575static int mt9m111_init(struct soc_camera_device *icd);
576static int mt9m111_release(struct soc_camera_device *icd);
577
578static struct soc_camera_ops mt9m111_ops = {
579 .owner = THIS_MODULE,
580 .probe = mt9m111_video_probe,
581 .remove = mt9m111_video_remove,
582 .init = mt9m111_init,
583 .resume = mt9m111_resume,
584 .release = mt9m111_release,
585 .start_capture = mt9m111_start_capture,
586 .stop_capture = mt9m111_stop_capture,
587 .set_fmt_cap = mt9m111_set_fmt_cap,
588 .try_fmt_cap = mt9m111_try_fmt_cap,
589 .query_bus_param = mt9m111_query_bus_param,
590 .set_bus_param = mt9m111_set_bus_param,
591 .controls = mt9m111_controls,
592 .num_controls = ARRAY_SIZE(mt9m111_controls),
593 .get_control = mt9m111_get_control,
594 .set_control = mt9m111_set_control,
595 .get_chip_id = mt9m111_get_chip_id,
596#ifdef CONFIG_VIDEO_ADV_DEBUG
597 .get_register = mt9m111_get_register,
598 .set_register = mt9m111_set_register,
599#endif
600};
601
602static int mt9m111_set_flip(struct soc_camera_device *icd, int flip, int mask)
603{
604 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
605 int ret;
606
607 if (mt9m111->context == HIGHPOWER) {
608 if (flip)
609 ret = reg_set(READ_MODE_B, mask);
610 else
611 ret = reg_clear(READ_MODE_B, mask);
612 } else {
613 if (flip)
614 ret = reg_set(READ_MODE_A, mask);
615 else
616 ret = reg_clear(READ_MODE_A, mask);
617 }
618
619 return ret;
620}
621
622static int mt9m111_get_global_gain(struct soc_camera_device *icd)
623{
624 unsigned int data, gain;
625
626 data = reg_read(GLOBAL_GAIN);
627 if (data >= 0)
628 gain = ((data & (1 << 10)) * 2)
629 | ((data & (1 << 9)) * 2)
630 | (data & 0x2f);
631 else
632 gain = data;
633
634 return gain;
635}
636static int mt9m111_set_global_gain(struct soc_camera_device *icd, int gain)
637{
638 u16 val;
639
640 if (gain > 63 * 2 * 2)
641 return -EINVAL;
642
643 icd->gain = gain;
644 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
645 val = (1 << 10) | (1 << 9) | (gain / 4);
646 else if ((gain >= 64) && (gain < 64 * 2))
647 val = (1<<9) | (gain / 2);
648 else
649 val = gain;
650
651 return reg_write(GLOBAL_GAIN, val);
652}
653
654static int mt9m111_set_autoexposure(struct soc_camera_device *icd, int on)
655{
656 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
657 int ret;
658
659 if (on)
660 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
661 else
662 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
663
664 if (ret >= 0)
665 mt9m111->autoexposure = on;
666
667 return ret;
668}
669static int mt9m111_get_control(struct soc_camera_device *icd,
670 struct v4l2_control *ctrl)
671{
672 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
673 int data;
674
675 switch (ctrl->id) {
676 case V4L2_CID_VFLIP:
677 if (mt9m111->context == HIGHPOWER)
678 data = reg_read(READ_MODE_B);
679 else
680 data = reg_read(READ_MODE_A);
681
682 if (data < 0)
683 return -EIO;
684 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
685 break;
686 case V4L2_CID_HFLIP:
687 if (mt9m111->context == HIGHPOWER)
688 data = reg_read(READ_MODE_B);
689 else
690 data = reg_read(READ_MODE_A);
691
692 if (data < 0)
693 return -EIO;
694 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
695 break;
696 case V4L2_CID_GAIN:
697 data = mt9m111_get_global_gain(icd);
698 if (data < 0)
699 return data;
700 ctrl->value = data;
701 break;
702 case V4L2_CID_EXPOSURE_AUTO:
703 ctrl->value = mt9m111->autoexposure;
704 break;
705 }
706 return 0;
707}
708
709static int mt9m111_set_control(struct soc_camera_device *icd,
710 struct v4l2_control *ctrl)
711{
712 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
713 const struct v4l2_queryctrl *qctrl;
714 int ret = 0;
715
716 qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
717
718 if (!qctrl)
719 return -EINVAL;
720
721 switch (ctrl->id) {
722 case V4L2_CID_VFLIP:
723 mt9m111->vflip = ctrl->value;
724 ret = mt9m111_set_flip(icd, ctrl->value,
725 MT9M111_RMB_MIRROR_ROWS);
726 break;
727 case V4L2_CID_HFLIP:
728 mt9m111->hflip = ctrl->value;
729 ret = mt9m111_set_flip(icd, ctrl->value,
730 MT9M111_RMB_MIRROR_COLS);
731 break;
732 case V4L2_CID_GAIN:
733 ret = mt9m111_set_global_gain(icd, ctrl->value);
734 break;
735 case V4L2_CID_EXPOSURE_AUTO:
736 ret = mt9m111_set_autoexposure(icd, ctrl->value);
737 break;
738 default:
739 ret = -EINVAL;
740 }
741
742 return ret < 0 ? -EIO : 0;
743}
744
745int mt9m111_restore_state(struct soc_camera_device *icd)
746{
747 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
748
749 mt9m111_set_context(icd, mt9m111->context);
750 mt9m111_set_pixfmt(icd, mt9m111->pixfmt);
751 mt9m111_setup_rect(icd);
752 mt9m111_set_flip(icd, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
753 mt9m111_set_flip(icd, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
754 mt9m111_set_global_gain(icd, icd->gain);
755 mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
756 return 0;
757}
758
759static int mt9m111_resume(struct soc_camera_device *icd)
760{
761 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
762 int ret = 0;
763
764 if (mt9m111->powered) {
765 ret = mt9m111_enable(icd);
766 if (ret >= 0)
767 mt9m111_reset(icd);
768 if (ret >= 0)
769 mt9m111_restore_state(icd);
770 }
771 return ret;
772}
773
774static int mt9m111_init(struct soc_camera_device *icd)
775{
776 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
777 int ret;
778
779 mt9m111->context = HIGHPOWER;
780 ret = mt9m111_enable(icd);
781 if (ret >= 0)
782 mt9m111_reset(icd);
783 if (ret >= 0)
784 mt9m111_set_context(icd, mt9m111->context);
785 if (ret >= 0)
786 mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
787 if (ret < 0)
788 dev_err(&icd->dev, "mt9m111 init failed: %d\n", ret);
789 return ret ? -EIO : 0;
790}
791
792static int mt9m111_release(struct soc_camera_device *icd)
793{
794 int ret;
795
796 ret = mt9m111_disable(icd);
797 if (ret < 0)
798 dev_err(&icd->dev, "mt9m111 release failed: %d\n", ret);
799
800 return ret ? -EIO : 0;
801}
802
803/*
804 * Interface active, can use i2c. If it fails, it can indeed mean, that
805 * this wasn't our capture interface, so, we wait for the right one
806 */
807static int mt9m111_video_probe(struct soc_camera_device *icd)
808{
809 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
810 s32 data;
811 int ret;
812
813 /*
814 * We must have a parent by now. And it cannot be a wrong one.
815 * So this entire test is completely redundant.
816 */
817 if (!icd->dev.parent ||
818 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
819 return -ENODEV;
820
821 ret = mt9m111_enable(icd);
822 if (ret)
823 goto ei2c;
824 ret = mt9m111_reset(icd);
825 if (ret)
826 goto ei2c;
827
828 data = reg_read(CHIP_VERSION);
829
830 switch (data) {
831 case 0x143a:
832 mt9m111->model = V4L2_IDENT_MT9M111;
833 icd->formats = mt9m111_colour_formats;
834 icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);
835 break;
836 default:
837 ret = -ENODEV;
838 dev_err(&icd->dev,
839 "No MT9M111 chip detected, register read %x\n", data);
840 goto ei2c;
841 }
842
843 dev_info(&icd->dev, "Detected a MT9M111 chip ID 0x143a\n");
844
845 ret = soc_camera_video_start(icd);
846 if (ret)
847 goto eisis;
848
849 mt9m111->autoexposure = 1;
850
851 mt9m111->swap_rgb_even_odd = 1;
852 mt9m111->swap_rgb_red_blue = 1;
853
854 return 0;
855eisis:
856ei2c:
857 return ret;
858}
859
860static void mt9m111_video_remove(struct soc_camera_device *icd)
861{
862 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
863
864 dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9m111->client->addr,
865 mt9m111->icd.dev.parent, mt9m111->icd.vdev);
866 soc_camera_video_stop(&mt9m111->icd);
867}
868
869static int mt9m111_probe(struct i2c_client *client,
870 const struct i2c_device_id *did)
871{
872 struct mt9m111 *mt9m111;
873 struct soc_camera_device *icd;
874 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
875 struct soc_camera_link *icl = client->dev.platform_data;
876 int ret;
877
878 if (!icl) {
879 dev_err(&client->dev, "MT9M111 driver needs platform data\n");
880 return -EINVAL;
881 }
882
883 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
884 dev_warn(&adapter->dev,
885 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
886 return -EIO;
887 }
888
889 mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
890 if (!mt9m111)
891 return -ENOMEM;
892
893 mt9m111->client = client;
894 i2c_set_clientdata(client, mt9m111);
895
896 /* Second stage probe - when a capture adapter is there */
897 icd = &mt9m111->icd;
898 icd->ops = &mt9m111_ops;
899 icd->control = &client->dev;
900 icd->x_min = MT9M111_MIN_DARK_COLS;
901 icd->y_min = MT9M111_MIN_DARK_ROWS;
902 icd->x_current = icd->x_min;
903 icd->y_current = icd->y_min;
904 icd->width_min = MT9M111_MIN_DARK_ROWS;
905 icd->width_max = MT9M111_MAX_WIDTH;
906 icd->height_min = MT9M111_MIN_DARK_COLS;
907 icd->height_max = MT9M111_MAX_HEIGHT;
908 icd->y_skip_top = 0;
909 icd->iface = icl->bus_id;
910
911 ret = soc_camera_device_register(icd);
912 if (ret)
913 goto eisdr;
914 return 0;
915
916eisdr:
917 kfree(mt9m111);
918 return ret;
919}
920
921static int mt9m111_remove(struct i2c_client *client)
922{
923 struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
924 soc_camera_device_unregister(&mt9m111->icd);
925 kfree(mt9m111);
926
927 return 0;
928}
929
930static const struct i2c_device_id mt9m111_id[] = {
931 { "mt9m111", 0 },
932 { }
933};
934MODULE_DEVICE_TABLE(i2c, mt9m111_id);
935
936static struct i2c_driver mt9m111_i2c_driver = {
937 .driver = {
938 .name = "mt9m111",
939 },
940 .probe = mt9m111_probe,
941 .remove = mt9m111_remove,
942 .id_table = mt9m111_id,
943};
944
945static int __init mt9m111_mod_init(void)
946{
947 return i2c_add_driver(&mt9m111_i2c_driver);
948}
949
950static void __exit mt9m111_mod_exit(void)
951{
952 i2c_del_driver(&mt9m111_i2c_driver);
953}
954
955module_init(mt9m111_mod_init);
956module_exit(mt9m111_mod_exit);
957
958MODULE_DESCRIPTION("Micron MT9M111 Camera driver");
959MODULE_AUTHOR("Robert Jarzmik");
960MODULE_LICENSE("GPL");
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