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[mirror_ubuntu-artful-kernel.git] / drivers / media / video / mt9m111.c
1 /*
2 * Driver for MT9M111/MT9M112 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 and mt9m112 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 #define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1)
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(client, MT9M111_##reg)
117 #define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val))
118 #define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val))
119 #define reg_clear(reg, val) mt9m111_reg_clear(client, 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 #define JPG_FMT(_name, _depth, _fourcc) \
132 COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_JPEG)
133
134 static const struct soc_camera_data_format mt9m111_colour_formats[] = {
135 JPG_FMT("CbYCrY 16 bit", 16, V4L2_PIX_FMT_UYVY),
136 JPG_FMT("CrYCbY 16 bit", 16, V4L2_PIX_FMT_VYUY),
137 JPG_FMT("YCbYCr 16 bit", 16, V4L2_PIX_FMT_YUYV),
138 JPG_FMT("YCrYCb 16 bit", 16, V4L2_PIX_FMT_YVYU),
139 RGB_FMT("RGB 565", 16, V4L2_PIX_FMT_RGB565),
140 RGB_FMT("RGB 555", 16, V4L2_PIX_FMT_RGB555),
141 RGB_FMT("Bayer (sRGB) 10 bit", 10, V4L2_PIX_FMT_SBGGR16),
142 RGB_FMT("Bayer (sRGB) 8 bit", 8, V4L2_PIX_FMT_SBGGR8),
143 };
144
145 enum mt9m111_context {
146 HIGHPOWER = 0,
147 LOWPOWER,
148 };
149
150 struct mt9m111 {
151 struct v4l2_subdev subdev;
152 int model; /* V4L2_IDENT_MT9M11x* codes from v4l2-chip-ident.h */
153 enum mt9m111_context context;
154 struct v4l2_rect rect;
155 u32 pixfmt;
156 unsigned char autoexposure;
157 unsigned char datawidth;
158 unsigned int powered:1;
159 unsigned int hflip:1;
160 unsigned int vflip:1;
161 unsigned int swap_rgb_even_odd:1;
162 unsigned int swap_rgb_red_blue:1;
163 unsigned int swap_yuv_y_chromas:1;
164 unsigned int swap_yuv_cb_cr:1;
165 unsigned int autowhitebalance:1;
166 };
167
168 static struct mt9m111 *to_mt9m111(const struct i2c_client *client)
169 {
170 return container_of(i2c_get_clientdata(client), struct mt9m111, subdev);
171 }
172
173 static int reg_page_map_set(struct i2c_client *client, const u16 reg)
174 {
175 int ret;
176 u16 page;
177 static int lastpage = -1; /* PageMap cache value */
178
179 page = (reg >> 8);
180 if (page == lastpage)
181 return 0;
182 if (page > 2)
183 return -EINVAL;
184
185 ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
186 if (!ret)
187 lastpage = page;
188 return ret;
189 }
190
191 static int mt9m111_reg_read(struct i2c_client *client, const u16 reg)
192 {
193 int ret;
194
195 ret = reg_page_map_set(client, reg);
196 if (!ret)
197 ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff)));
198
199 dev_dbg(&client->dev, "read reg.%03x -> %04x\n", reg, ret);
200 return ret;
201 }
202
203 static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
204 const u16 data)
205 {
206 int ret;
207
208 ret = reg_page_map_set(client, reg);
209 if (!ret)
210 ret = i2c_smbus_write_word_data(client, reg & 0xff,
211 swab16(data));
212 dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
213 return ret;
214 }
215
216 static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
217 const u16 data)
218 {
219 int ret;
220
221 ret = mt9m111_reg_read(client, reg);
222 if (ret >= 0)
223 ret = mt9m111_reg_write(client, reg, ret | data);
224 return ret;
225 }
226
227 static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
228 const u16 data)
229 {
230 int ret;
231
232 ret = mt9m111_reg_read(client, reg);
233 return mt9m111_reg_write(client, reg, ret & ~data);
234 }
235
236 static int mt9m111_set_context(struct i2c_client *client,
237 enum mt9m111_context ctxt)
238 {
239 int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
240 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
241 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
242 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
243 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
244 int valA = MT9M111_CTXT_CTRL_RESTART;
245
246 if (ctxt == HIGHPOWER)
247 return reg_write(CONTEXT_CONTROL, valB);
248 else
249 return reg_write(CONTEXT_CONTROL, valA);
250 }
251
252 static int mt9m111_setup_rect(struct i2c_client *client,
253 struct v4l2_rect *rect)
254 {
255 struct mt9m111 *mt9m111 = to_mt9m111(client);
256 int ret, is_raw_format;
257 int width = rect->width;
258 int height = rect->height;
259
260 if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8)
261 || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16))
262 is_raw_format = 1;
263 else
264 is_raw_format = 0;
265
266 ret = reg_write(COLUMN_START, rect->left);
267 if (!ret)
268 ret = reg_write(ROW_START, rect->top);
269
270 if (is_raw_format) {
271 if (!ret)
272 ret = reg_write(WINDOW_WIDTH, width);
273 if (!ret)
274 ret = reg_write(WINDOW_HEIGHT, height);
275 } else {
276 if (!ret)
277 ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
278 if (!ret)
279 ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
280 if (!ret)
281 ret = reg_write(REDUCER_XSIZE_B, width);
282 if (!ret)
283 ret = reg_write(REDUCER_YSIZE_B, height);
284 if (!ret)
285 ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
286 if (!ret)
287 ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
288 if (!ret)
289 ret = reg_write(REDUCER_XSIZE_A, width);
290 if (!ret)
291 ret = reg_write(REDUCER_YSIZE_A, height);
292 }
293
294 return ret;
295 }
296
297 static int mt9m111_setup_pixfmt(struct i2c_client *client, u16 outfmt)
298 {
299 int ret;
300
301 ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
302 if (!ret)
303 ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
304 return ret;
305 }
306
307 static int mt9m111_setfmt_bayer8(struct i2c_client *client)
308 {
309 return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_PROCESSED_BAYER);
310 }
311
312 static int mt9m111_setfmt_bayer10(struct i2c_client *client)
313 {
314 return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_BYPASS_IFP);
315 }
316
317 static int mt9m111_setfmt_rgb565(struct i2c_client *client)
318 {
319 struct mt9m111 *mt9m111 = to_mt9m111(client);
320 int val = 0;
321
322 if (mt9m111->swap_rgb_red_blue)
323 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
324 if (mt9m111->swap_rgb_even_odd)
325 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
326 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
327
328 return mt9m111_setup_pixfmt(client, val);
329 }
330
331 static int mt9m111_setfmt_rgb555(struct i2c_client *client)
332 {
333 struct mt9m111 *mt9m111 = to_mt9m111(client);
334 int val = 0;
335
336 if (mt9m111->swap_rgb_red_blue)
337 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
338 if (mt9m111->swap_rgb_even_odd)
339 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
340 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
341
342 return mt9m111_setup_pixfmt(client, val);
343 }
344
345 static int mt9m111_setfmt_yuv(struct i2c_client *client)
346 {
347 struct mt9m111 *mt9m111 = to_mt9m111(client);
348 int val = 0;
349
350 if (mt9m111->swap_yuv_cb_cr)
351 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
352 if (mt9m111->swap_yuv_y_chromas)
353 val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
354
355 return mt9m111_setup_pixfmt(client, val);
356 }
357
358 static int mt9m111_enable(struct i2c_client *client)
359 {
360 struct mt9m111 *mt9m111 = to_mt9m111(client);
361 int ret;
362
363 ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
364 if (!ret)
365 mt9m111->powered = 1;
366 return ret;
367 }
368
369 static int mt9m111_reset(struct i2c_client *client)
370 {
371 int ret;
372
373 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
374 if (!ret)
375 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
376 if (!ret)
377 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
378 | MT9M111_RESET_RESET_SOC);
379
380 return ret;
381 }
382
383 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
384 {
385 struct soc_camera_link *icl = to_soc_camera_link(icd);
386 unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
387 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
388 SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
389
390 return soc_camera_apply_sensor_flags(icl, flags);
391 }
392
393 static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
394 {
395 return 0;
396 }
397
398 static int mt9m111_set_crop(struct soc_camera_device *icd,
399 struct v4l2_rect *rect)
400 {
401 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
402 struct mt9m111 *mt9m111 = to_mt9m111(client);
403 int ret;
404
405 dev_dbg(&icd->dev, "%s left=%d, top=%d, width=%d, height=%d\n",
406 __func__, rect->left, rect->top, rect->width,
407 rect->height);
408
409 ret = mt9m111_setup_rect(client, rect);
410 if (!ret)
411 mt9m111->rect = *rect;
412 return ret;
413 }
414
415 static int mt9m111_set_pixfmt(struct i2c_client *client, u32 pixfmt)
416 {
417 struct mt9m111 *mt9m111 = to_mt9m111(client);
418 int ret;
419
420 switch (pixfmt) {
421 case V4L2_PIX_FMT_SBGGR8:
422 ret = mt9m111_setfmt_bayer8(client);
423 break;
424 case V4L2_PIX_FMT_SBGGR16:
425 ret = mt9m111_setfmt_bayer10(client);
426 break;
427 case V4L2_PIX_FMT_RGB555:
428 ret = mt9m111_setfmt_rgb555(client);
429 break;
430 case V4L2_PIX_FMT_RGB565:
431 ret = mt9m111_setfmt_rgb565(client);
432 break;
433 case V4L2_PIX_FMT_UYVY:
434 mt9m111->swap_yuv_y_chromas = 0;
435 mt9m111->swap_yuv_cb_cr = 0;
436 ret = mt9m111_setfmt_yuv(client);
437 break;
438 case V4L2_PIX_FMT_VYUY:
439 mt9m111->swap_yuv_y_chromas = 0;
440 mt9m111->swap_yuv_cb_cr = 1;
441 ret = mt9m111_setfmt_yuv(client);
442 break;
443 case V4L2_PIX_FMT_YUYV:
444 mt9m111->swap_yuv_y_chromas = 1;
445 mt9m111->swap_yuv_cb_cr = 0;
446 ret = mt9m111_setfmt_yuv(client);
447 break;
448 case V4L2_PIX_FMT_YVYU:
449 mt9m111->swap_yuv_y_chromas = 1;
450 mt9m111->swap_yuv_cb_cr = 1;
451 ret = mt9m111_setfmt_yuv(client);
452 break;
453 default:
454 dev_err(&client->dev, "Pixel format not handled : %x\n", pixfmt);
455 ret = -EINVAL;
456 }
457
458 if (!ret)
459 mt9m111->pixfmt = pixfmt;
460
461 return ret;
462 }
463
464 static int mt9m111_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
465 {
466 struct i2c_client *client = sd->priv;
467 struct mt9m111 *mt9m111 = to_mt9m111(client);
468 struct v4l2_pix_format *pix = &f->fmt.pix;
469 struct v4l2_rect rect = {
470 .left = mt9m111->rect.left,
471 .top = mt9m111->rect.top,
472 .width = pix->width,
473 .height = pix->height,
474 };
475 int ret;
476
477 dev_dbg(&client->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n",
478 __func__, pix->pixelformat, rect.left, rect.top, rect.width,
479 rect.height);
480
481 ret = mt9m111_setup_rect(client, &rect);
482 if (!ret)
483 ret = mt9m111_set_pixfmt(client, pix->pixelformat);
484 if (!ret)
485 mt9m111->rect = rect;
486 return ret;
487 }
488
489 static int mt9m111_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
490 {
491 struct v4l2_pix_format *pix = &f->fmt.pix;
492
493 if (pix->height > MT9M111_MAX_HEIGHT)
494 pix->height = MT9M111_MAX_HEIGHT;
495 if (pix->width > MT9M111_MAX_WIDTH)
496 pix->width = MT9M111_MAX_WIDTH;
497
498 return 0;
499 }
500
501 static int mt9m111_g_chip_ident(struct v4l2_subdev *sd,
502 struct v4l2_dbg_chip_ident *id)
503 {
504 struct i2c_client *client = sd->priv;
505 struct mt9m111 *mt9m111 = to_mt9m111(client);
506
507 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
508 return -EINVAL;
509
510 if (id->match.addr != client->addr)
511 return -ENODEV;
512
513 id->ident = mt9m111->model;
514 id->revision = 0;
515
516 return 0;
517 }
518
519 #ifdef CONFIG_VIDEO_ADV_DEBUG
520 static int mt9m111_g_register(struct v4l2_subdev *sd,
521 struct v4l2_dbg_register *reg)
522 {
523 struct i2c_client *client = sd->priv;
524 int val;
525
526 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
527 return -EINVAL;
528 if (reg->match.addr != client->addr)
529 return -ENODEV;
530
531 val = mt9m111_reg_read(client, reg->reg);
532 reg->size = 2;
533 reg->val = (u64)val;
534
535 if (reg->val > 0xffff)
536 return -EIO;
537
538 return 0;
539 }
540
541 static int mt9m111_s_register(struct v4l2_subdev *sd,
542 struct v4l2_dbg_register *reg)
543 {
544 struct i2c_client *client = sd->priv;
545
546 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
547 return -EINVAL;
548
549 if (reg->match.addr != client->addr)
550 return -ENODEV;
551
552 if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
553 return -EIO;
554
555 return 0;
556 }
557 #endif
558
559 static const struct v4l2_queryctrl mt9m111_controls[] = {
560 {
561 .id = V4L2_CID_VFLIP,
562 .type = V4L2_CTRL_TYPE_BOOLEAN,
563 .name = "Flip Verticaly",
564 .minimum = 0,
565 .maximum = 1,
566 .step = 1,
567 .default_value = 0,
568 }, {
569 .id = V4L2_CID_HFLIP,
570 .type = V4L2_CTRL_TYPE_BOOLEAN,
571 .name = "Flip Horizontaly",
572 .minimum = 0,
573 .maximum = 1,
574 .step = 1,
575 .default_value = 0,
576 }, { /* gain = 1/32*val (=>gain=1 if val==32) */
577 .id = V4L2_CID_GAIN,
578 .type = V4L2_CTRL_TYPE_INTEGER,
579 .name = "Gain",
580 .minimum = 0,
581 .maximum = 63 * 2 * 2,
582 .step = 1,
583 .default_value = 32,
584 .flags = V4L2_CTRL_FLAG_SLIDER,
585 }, {
586 .id = V4L2_CID_EXPOSURE_AUTO,
587 .type = V4L2_CTRL_TYPE_BOOLEAN,
588 .name = "Auto Exposure",
589 .minimum = 0,
590 .maximum = 1,
591 .step = 1,
592 .default_value = 1,
593 }
594 };
595
596 static int mt9m111_resume(struct soc_camera_device *icd);
597 static int mt9m111_init(struct soc_camera_device *icd);
598 static int mt9m111_release(struct soc_camera_device *icd);
599
600 static struct soc_camera_ops mt9m111_ops = {
601 .init = mt9m111_init,
602 .resume = mt9m111_resume,
603 .release = mt9m111_release,
604 .set_crop = mt9m111_set_crop,
605 .query_bus_param = mt9m111_query_bus_param,
606 .set_bus_param = mt9m111_set_bus_param,
607 .controls = mt9m111_controls,
608 .num_controls = ARRAY_SIZE(mt9m111_controls),
609 };
610
611 static int mt9m111_set_flip(struct i2c_client *client, int flip, int mask)
612 {
613 struct mt9m111 *mt9m111 = to_mt9m111(client);
614 int ret;
615
616 if (mt9m111->context == HIGHPOWER) {
617 if (flip)
618 ret = reg_set(READ_MODE_B, mask);
619 else
620 ret = reg_clear(READ_MODE_B, mask);
621 } else {
622 if (flip)
623 ret = reg_set(READ_MODE_A, mask);
624 else
625 ret = reg_clear(READ_MODE_A, mask);
626 }
627
628 return ret;
629 }
630
631 static int mt9m111_get_global_gain(struct i2c_client *client)
632 {
633 int data;
634
635 data = reg_read(GLOBAL_GAIN);
636 if (data >= 0)
637 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
638 (1 << ((data >> 9) & 1));
639 return data;
640 }
641
642 static int mt9m111_set_global_gain(struct i2c_client *client, int gain)
643 {
644 struct soc_camera_device *icd = client->dev.platform_data;
645 u16 val;
646
647 if (gain > 63 * 2 * 2)
648 return -EINVAL;
649
650 icd->gain = gain;
651 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
652 val = (1 << 10) | (1 << 9) | (gain / 4);
653 else if ((gain >= 64) && (gain < 64 * 2))
654 val = (1 << 9) | (gain / 2);
655 else
656 val = gain;
657
658 return reg_write(GLOBAL_GAIN, val);
659 }
660
661 static int mt9m111_set_autoexposure(struct i2c_client *client, int on)
662 {
663 struct mt9m111 *mt9m111 = to_mt9m111(client);
664 int ret;
665
666 if (on)
667 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
668 else
669 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
670
671 if (!ret)
672 mt9m111->autoexposure = on;
673
674 return ret;
675 }
676
677 static int mt9m111_set_autowhitebalance(struct i2c_client *client, int on)
678 {
679 struct mt9m111 *mt9m111 = to_mt9m111(client);
680 int ret;
681
682 if (on)
683 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
684 else
685 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
686
687 if (!ret)
688 mt9m111->autowhitebalance = on;
689
690 return ret;
691 }
692
693 static int mt9m111_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
694 {
695 struct i2c_client *client = sd->priv;
696 struct mt9m111 *mt9m111 = to_mt9m111(client);
697 int data;
698
699 switch (ctrl->id) {
700 case V4L2_CID_VFLIP:
701 if (mt9m111->context == HIGHPOWER)
702 data = reg_read(READ_MODE_B);
703 else
704 data = reg_read(READ_MODE_A);
705
706 if (data < 0)
707 return -EIO;
708 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
709 break;
710 case V4L2_CID_HFLIP:
711 if (mt9m111->context == HIGHPOWER)
712 data = reg_read(READ_MODE_B);
713 else
714 data = reg_read(READ_MODE_A);
715
716 if (data < 0)
717 return -EIO;
718 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
719 break;
720 case V4L2_CID_GAIN:
721 data = mt9m111_get_global_gain(client);
722 if (data < 0)
723 return data;
724 ctrl->value = data;
725 break;
726 case V4L2_CID_EXPOSURE_AUTO:
727 ctrl->value = mt9m111->autoexposure;
728 break;
729 case V4L2_CID_AUTO_WHITE_BALANCE:
730 ctrl->value = mt9m111->autowhitebalance;
731 break;
732 }
733 return 0;
734 }
735
736 static int mt9m111_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
737 {
738 struct i2c_client *client = sd->priv;
739 struct mt9m111 *mt9m111 = to_mt9m111(client);
740 const struct v4l2_queryctrl *qctrl;
741 int ret;
742
743 qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
744 if (!qctrl)
745 return -EINVAL;
746
747 switch (ctrl->id) {
748 case V4L2_CID_VFLIP:
749 mt9m111->vflip = ctrl->value;
750 ret = mt9m111_set_flip(client, ctrl->value,
751 MT9M111_RMB_MIRROR_ROWS);
752 break;
753 case V4L2_CID_HFLIP:
754 mt9m111->hflip = ctrl->value;
755 ret = mt9m111_set_flip(client, ctrl->value,
756 MT9M111_RMB_MIRROR_COLS);
757 break;
758 case V4L2_CID_GAIN:
759 ret = mt9m111_set_global_gain(client, ctrl->value);
760 break;
761 case V4L2_CID_EXPOSURE_AUTO:
762 ret = mt9m111_set_autoexposure(client, ctrl->value);
763 break;
764 case V4L2_CID_AUTO_WHITE_BALANCE:
765 ret = mt9m111_set_autowhitebalance(client, ctrl->value);
766 break;
767 default:
768 ret = -EINVAL;
769 }
770
771 return ret;
772 }
773
774 static int mt9m111_restore_state(struct i2c_client *client)
775 {
776 struct mt9m111 *mt9m111 = to_mt9m111(client);
777 struct soc_camera_device *icd = client->dev.platform_data;
778
779 mt9m111_set_context(client, mt9m111->context);
780 mt9m111_set_pixfmt(client, mt9m111->pixfmt);
781 mt9m111_setup_rect(client, &mt9m111->rect);
782 mt9m111_set_flip(client, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
783 mt9m111_set_flip(client, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
784 mt9m111_set_global_gain(client, icd->gain);
785 mt9m111_set_autoexposure(client, mt9m111->autoexposure);
786 mt9m111_set_autowhitebalance(client, mt9m111->autowhitebalance);
787 return 0;
788 }
789
790 static int mt9m111_resume(struct soc_camera_device *icd)
791 {
792 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
793 struct mt9m111 *mt9m111 = to_mt9m111(client);
794 int ret = 0;
795
796 if (mt9m111->powered) {
797 ret = mt9m111_enable(client);
798 if (!ret)
799 ret = mt9m111_reset(client);
800 if (!ret)
801 ret = mt9m111_restore_state(client);
802 }
803 return ret;
804 }
805
806 static int mt9m111_init(struct soc_camera_device *icd)
807 {
808 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
809 struct mt9m111 *mt9m111 = to_mt9m111(client);
810 int ret;
811
812 mt9m111->context = HIGHPOWER;
813 ret = mt9m111_enable(client);
814 if (!ret)
815 ret = mt9m111_reset(client);
816 if (!ret)
817 ret = mt9m111_set_context(client, mt9m111->context);
818 if (!ret)
819 ret = mt9m111_set_autoexposure(client, mt9m111->autoexposure);
820 if (ret)
821 dev_err(&icd->dev, "mt9m11x init failed: %d\n", ret);
822 return ret;
823 }
824
825 static int mt9m111_release(struct soc_camera_device *icd)
826 {
827 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
828 struct mt9m111 *mt9m111 = to_mt9m111(client);
829 int ret;
830
831 ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
832 if (!ret)
833 mt9m111->powered = 0;
834
835 if (ret < 0)
836 dev_err(&icd->dev, "mt9m11x release failed: %d\n", ret);
837
838 return ret;
839 }
840
841 /*
842 * Interface active, can use i2c. If it fails, it can indeed mean, that
843 * this wasn't our capture interface, so, we wait for the right one
844 */
845 static int mt9m111_video_probe(struct soc_camera_device *icd,
846 struct i2c_client *client)
847 {
848 struct mt9m111 *mt9m111 = to_mt9m111(client);
849 s32 data;
850 int ret;
851
852 /*
853 * We must have a parent by now. And it cannot be a wrong one.
854 * So this entire test is completely redundant.
855 */
856 if (!icd->dev.parent ||
857 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
858 return -ENODEV;
859
860 ret = mt9m111_enable(client);
861 if (ret)
862 goto ei2c;
863 ret = mt9m111_reset(client);
864 if (ret)
865 goto ei2c;
866
867 data = reg_read(CHIP_VERSION);
868
869 switch (data) {
870 case 0x143a: /* MT9M111 */
871 mt9m111->model = V4L2_IDENT_MT9M111;
872 break;
873 case 0x148c: /* MT9M112 */
874 mt9m111->model = V4L2_IDENT_MT9M112;
875 break;
876 default:
877 ret = -ENODEV;
878 dev_err(&icd->dev,
879 "No MT9M11x chip detected, register read %x\n", data);
880 goto ei2c;
881 }
882
883 icd->formats = mt9m111_colour_formats;
884 icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);
885
886 dev_info(&icd->dev, "Detected a MT9M11x chip ID %x\n", data);
887
888 mt9m111->autoexposure = 1;
889 mt9m111->autowhitebalance = 1;
890
891 mt9m111->swap_rgb_even_odd = 1;
892 mt9m111->swap_rgb_red_blue = 1;
893
894 ei2c:
895 return ret;
896 }
897
898 static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
899 .g_ctrl = mt9m111_g_ctrl,
900 .s_ctrl = mt9m111_s_ctrl,
901 .g_chip_ident = mt9m111_g_chip_ident,
902 #ifdef CONFIG_VIDEO_ADV_DEBUG
903 .g_register = mt9m111_g_register,
904 .s_register = mt9m111_s_register,
905 #endif
906 };
907
908 static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
909 .s_fmt = mt9m111_s_fmt,
910 .try_fmt = mt9m111_try_fmt,
911 };
912
913 static struct v4l2_subdev_ops mt9m111_subdev_ops = {
914 .core = &mt9m111_subdev_core_ops,
915 .video = &mt9m111_subdev_video_ops,
916 };
917
918 static int mt9m111_probe(struct i2c_client *client,
919 const struct i2c_device_id *did)
920 {
921 struct mt9m111 *mt9m111;
922 struct soc_camera_device *icd = client->dev.platform_data;
923 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
924 struct soc_camera_link *icl;
925 int ret;
926
927 if (!icd) {
928 dev_err(&client->dev, "MT9M11x: missing soc-camera data!\n");
929 return -EINVAL;
930 }
931
932 icl = to_soc_camera_link(icd);
933 if (!icl) {
934 dev_err(&client->dev, "MT9M11x driver needs platform data\n");
935 return -EINVAL;
936 }
937
938 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
939 dev_warn(&adapter->dev,
940 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
941 return -EIO;
942 }
943
944 mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
945 if (!mt9m111)
946 return -ENOMEM;
947
948 v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
949
950 /* Second stage probe - when a capture adapter is there */
951 icd->ops = &mt9m111_ops;
952 icd->rect_max.left = MT9M111_MIN_DARK_COLS;
953 icd->rect_max.top = MT9M111_MIN_DARK_ROWS;
954 icd->rect_max.width = MT9M111_MAX_WIDTH;
955 icd->rect_max.height = MT9M111_MAX_HEIGHT;
956 icd->rect_current.left = icd->rect_max.left;
957 icd->rect_current.top = icd->rect_max.top;
958 icd->width_min = MT9M111_MIN_DARK_ROWS;
959 icd->height_min = MT9M111_MIN_DARK_COLS;
960 icd->y_skip_top = 0;
961
962 ret = mt9m111_video_probe(icd, client);
963 if (ret) {
964 icd->ops = NULL;
965 i2c_set_clientdata(client, NULL);
966 kfree(mt9m111);
967 }
968
969 return ret;
970 }
971
972 static int mt9m111_remove(struct i2c_client *client)
973 {
974 struct mt9m111 *mt9m111 = to_mt9m111(client);
975 struct soc_camera_device *icd = client->dev.platform_data;
976
977 icd->ops = NULL;
978 i2c_set_clientdata(client, NULL);
979 client->driver = NULL;
980 kfree(mt9m111);
981
982 return 0;
983 }
984
985 static const struct i2c_device_id mt9m111_id[] = {
986 { "mt9m111", 0 },
987 { }
988 };
989 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
990
991 static struct i2c_driver mt9m111_i2c_driver = {
992 .driver = {
993 .name = "mt9m111",
994 },
995 .probe = mt9m111_probe,
996 .remove = mt9m111_remove,
997 .id_table = mt9m111_id,
998 };
999
1000 static int __init mt9m111_mod_init(void)
1001 {
1002 return i2c_add_driver(&mt9m111_i2c_driver);
1003 }
1004
1005 static void __exit mt9m111_mod_exit(void)
1006 {
1007 i2c_del_driver(&mt9m111_i2c_driver);
1008 }
1009
1010 module_init(mt9m111_mod_init);
1011 module_exit(mt9m111_mod_exit);
1012
1013 MODULE_DESCRIPTION("Micron MT9M111/MT9M112 Camera driver");
1014 MODULE_AUTHOR("Robert Jarzmik");
1015 MODULE_LICENSE("GPL");
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