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Merge branch 'v6v7' into devel
[linux/fpc-iii.git] / drivers / media / video / mt9m111.c
blob53fa2a7bf156a862383b84006ee2fd2663606df9
1 /*
2 * Driver for MT9M111/MT9M112/MT9M131 CMOS Image Sensor from Micron/Aptina
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, MT9M112 and MT9M131:
23 * i2c address is 0x48 or 0x5d (depending on SADDR pin)
24 * The platform has to define i2c_board_info and call i2c_register_board_info()
25 */
26
27 /*
28 * Sensor core register addresses (0x000..0x0ff)
29 */
30 #define MT9M111_CHIP_VERSION 0x000
31 #define MT9M111_ROW_START 0x001
32 #define MT9M111_COLUMN_START 0x002
33 #define MT9M111_WINDOW_HEIGHT 0x003
34 #define MT9M111_WINDOW_WIDTH 0x004
35 #define MT9M111_HORIZONTAL_BLANKING_B 0x005
36 #define MT9M111_VERTICAL_BLANKING_B 0x006
37 #define MT9M111_HORIZONTAL_BLANKING_A 0x007
38 #define MT9M111_VERTICAL_BLANKING_A 0x008
39 #define MT9M111_SHUTTER_WIDTH 0x009
40 #define MT9M111_ROW_SPEED 0x00a
41 #define MT9M111_EXTRA_DELAY 0x00b
42 #define MT9M111_SHUTTER_DELAY 0x00c
43 #define MT9M111_RESET 0x00d
44 #define MT9M111_READ_MODE_B 0x020
45 #define MT9M111_READ_MODE_A 0x021
46 #define MT9M111_FLASH_CONTROL 0x023
47 #define MT9M111_GREEN1_GAIN 0x02b
48 #define MT9M111_BLUE_GAIN 0x02c
49 #define MT9M111_RED_GAIN 0x02d
50 #define MT9M111_GREEN2_GAIN 0x02e
51 #define MT9M111_GLOBAL_GAIN 0x02f
52 #define MT9M111_CONTEXT_CONTROL 0x0c8
53 #define MT9M111_PAGE_MAP 0x0f0
54 #define MT9M111_BYTE_WISE_ADDR 0x0f1
55
56 #define MT9M111_RESET_SYNC_CHANGES (1 << 15)
57 #define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
58 #define MT9M111_RESET_SHOW_BAD_FRAMES (1 << 8)
59 #define MT9M111_RESET_RESET_SOC (1 << 5)
60 #define MT9M111_RESET_OUTPUT_DISABLE (1 << 4)
61 #define MT9M111_RESET_CHIP_ENABLE (1 << 3)
62 #define MT9M111_RESET_ANALOG_STANDBY (1 << 2)
63 #define MT9M111_RESET_RESTART_FRAME (1 << 1)
64 #define MT9M111_RESET_RESET_MODE (1 << 0)
65
66 #define MT9M111_RMB_MIRROR_COLS (1 << 1)
67 #define MT9M111_RMB_MIRROR_ROWS (1 << 0)
68 #define MT9M111_CTXT_CTRL_RESTART (1 << 15)
69 #define MT9M111_CTXT_CTRL_DEFECTCOR_B (1 << 12)
70 #define MT9M111_CTXT_CTRL_RESIZE_B (1 << 10)
71 #define MT9M111_CTXT_CTRL_CTRL2_B (1 << 9)
72 #define MT9M111_CTXT_CTRL_GAMMA_B (1 << 8)
73 #define MT9M111_CTXT_CTRL_XENON_EN (1 << 7)
74 #define MT9M111_CTXT_CTRL_READ_MODE_B (1 << 3)
75 #define MT9M111_CTXT_CTRL_LED_FLASH_EN (1 << 2)
76 #define MT9M111_CTXT_CTRL_VBLANK_SEL_B (1 << 1)
77 #define MT9M111_CTXT_CTRL_HBLANK_SEL_B (1 << 0)
78
79 /*
80 * Colorpipe register addresses (0x100..0x1ff)
81 */
82 #define MT9M111_OPER_MODE_CTRL 0x106
83 #define MT9M111_OUTPUT_FORMAT_CTRL 0x108
84 #define MT9M111_REDUCER_XZOOM_B 0x1a0
85 #define MT9M111_REDUCER_XSIZE_B 0x1a1
86 #define MT9M111_REDUCER_YZOOM_B 0x1a3
87 #define MT9M111_REDUCER_YSIZE_B 0x1a4
88 #define MT9M111_REDUCER_XZOOM_A 0x1a6
89 #define MT9M111_REDUCER_XSIZE_A 0x1a7
90 #define MT9M111_REDUCER_YZOOM_A 0x1a9
91 #define MT9M111_REDUCER_YSIZE_A 0x1aa
92
93 #define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a
94 #define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
95
96 #define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
97 #define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1)
98
99 #define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14)
100 #define MT9M111_OUTFMT_BYPASS_IFP (1 << 10)
101 #define MT9M111_OUTFMT_INV_PIX_CLOCK (1 << 9)
102 #define MT9M111_OUTFMT_RGB (1 << 8)
103 #define MT9M111_OUTFMT_RGB565 (0 << 6)
104 #define MT9M111_OUTFMT_RGB555 (1 << 6)
105 #define MT9M111_OUTFMT_RGB444x (2 << 6)
106 #define MT9M111_OUTFMT_RGBx444 (3 << 6)
107 #define MT9M111_OUTFMT_TST_RAMP_OFF (0 << 4)
108 #define MT9M111_OUTFMT_TST_RAMP_COL (1 << 4)
109 #define MT9M111_OUTFMT_TST_RAMP_ROW (2 << 4)
110 #define MT9M111_OUTFMT_TST_RAMP_FRAME (3 << 4)
111 #define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3)
112 #define MT9M111_OUTFMT_AVG_CHROMA (1 << 2)
113 #define MT9M111_OUTFMT_SWAP_YCbCr_C_Y (1 << 1)
114 #define MT9M111_OUTFMT_SWAP_RGB_EVEN (1 << 1)
115 #define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr (1 << 0)
116
117 /*
118 * Camera control register addresses (0x200..0x2ff not implemented)
119 */
120
121 #define reg_read(reg) mt9m111_reg_read(client, MT9M111_##reg)
122 #define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val))
123 #define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val))
124 #define reg_clear(reg, val) mt9m111_reg_clear(client, MT9M111_##reg, (val))
125
126 #define MT9M111_MIN_DARK_ROWS 8
127 #define MT9M111_MIN_DARK_COLS 26
128 #define MT9M111_MAX_HEIGHT 1024
129 #define MT9M111_MAX_WIDTH 1280
130
131 /* MT9M111 has only one fixed colorspace per pixelcode */
132 struct mt9m111_datafmt {
133 enum v4l2_mbus_pixelcode code;
134 enum v4l2_colorspace colorspace;
135 };
136
137 /* Find a data format by a pixel code in an array */
138 static const struct mt9m111_datafmt *mt9m111_find_datafmt(
139 enum v4l2_mbus_pixelcode code, const struct mt9m111_datafmt *fmt,
140 int n)
141 {
142 int i;
143 for (i = 0; i < n; i++)
144 if (fmt[i].code == code)
145 return fmt + i;
146
147 return NULL;
148 }
149
150 static const struct mt9m111_datafmt mt9m111_colour_fmts[] = {
151 {V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG},
152 {V4L2_MBUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG},
153 {V4L2_MBUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG},
154 {V4L2_MBUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_JPEG},
155 {V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
156 {V4L2_MBUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
157 {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
158 {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
159 };
160
161 enum mt9m111_context {
162 HIGHPOWER = 0,
163 LOWPOWER,
164 };
165
166 struct mt9m111 {
167 struct v4l2_subdev subdev;
168 int model; /* V4L2_IDENT_MT9M111 or V4L2_IDENT_MT9M112 code
169 * from v4l2-chip-ident.h */
170 enum mt9m111_context context;
171 struct v4l2_rect rect;
172 const struct mt9m111_datafmt *fmt;
173 unsigned int gain;
174 unsigned char autoexposure;
175 unsigned char datawidth;
176 unsigned int powered:1;
177 unsigned int hflip:1;
178 unsigned int vflip:1;
179 unsigned int swap_rgb_even_odd:1;
180 unsigned int swap_rgb_red_blue:1;
181 unsigned int swap_yuv_y_chromas:1;
182 unsigned int swap_yuv_cb_cr:1;
183 unsigned int autowhitebalance:1;
184 };
185
186 static struct mt9m111 *to_mt9m111(const struct i2c_client *client)
187 {
188 return container_of(i2c_get_clientdata(client), struct mt9m111, subdev);
189 }
190
191 static int reg_page_map_set(struct i2c_client *client, const u16 reg)
192 {
193 int ret;
194 u16 page;
195 static int lastpage = -1; /* PageMap cache value */
196
197 page = (reg >> 8);
198 if (page == lastpage)
199 return 0;
200 if (page > 2)
201 return -EINVAL;
202
203 ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
204 if (!ret)
205 lastpage = page;
206 return ret;
207 }
208
209 static int mt9m111_reg_read(struct i2c_client *client, const u16 reg)
210 {
211 int ret;
212
213 ret = reg_page_map_set(client, reg);
214 if (!ret)
215 ret = swab16(i2c_smbus_read_word_data(client, reg & 0xff));
216
217 dev_dbg(&client->dev, "read reg.%03x -> %04x\n", reg, ret);
218 return ret;
219 }
220
221 static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
222 const u16 data)
223 {
224 int ret;
225
226 ret = reg_page_map_set(client, reg);
227 if (!ret)
228 ret = i2c_smbus_write_word_data(client, reg & 0xff,
229 swab16(data));
230 dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
231 return ret;
232 }
233
234 static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
235 const u16 data)
236 {
237 int ret;
238
239 ret = mt9m111_reg_read(client, reg);
240 if (ret >= 0)
241 ret = mt9m111_reg_write(client, reg, ret | data);
242 return ret;
243 }
244
245 static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
246 const u16 data)
247 {
248 int ret;
249
250 ret = mt9m111_reg_read(client, reg);
251 return mt9m111_reg_write(client, reg, ret & ~data);
252 }
253
254 static int mt9m111_set_context(struct i2c_client *client,
255 enum mt9m111_context ctxt)
256 {
257 int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
258 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
259 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
260 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
261 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
262 int valA = MT9M111_CTXT_CTRL_RESTART;
263
264 if (ctxt == HIGHPOWER)
265 return reg_write(CONTEXT_CONTROL, valB);
266 else
267 return reg_write(CONTEXT_CONTROL, valA);
268 }
269
270 static int mt9m111_setup_rect(struct i2c_client *client,
271 struct v4l2_rect *rect)
272 {
273 struct mt9m111 *mt9m111 = to_mt9m111(client);
274 int ret, is_raw_format;
275 int width = rect->width;
276 int height = rect->height;
277
278 if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
279 mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE)
280 is_raw_format = 1;
281 else
282 is_raw_format = 0;
283
284 ret = reg_write(COLUMN_START, rect->left);
285 if (!ret)
286 ret = reg_write(ROW_START, rect->top);
287
288 if (is_raw_format) {
289 if (!ret)
290 ret = reg_write(WINDOW_WIDTH, width);
291 if (!ret)
292 ret = reg_write(WINDOW_HEIGHT, height);
293 } else {
294 if (!ret)
295 ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
296 if (!ret)
297 ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
298 if (!ret)
299 ret = reg_write(REDUCER_XSIZE_B, width);
300 if (!ret)
301 ret = reg_write(REDUCER_YSIZE_B, height);
302 if (!ret)
303 ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
304 if (!ret)
305 ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
306 if (!ret)
307 ret = reg_write(REDUCER_XSIZE_A, width);
308 if (!ret)
309 ret = reg_write(REDUCER_YSIZE_A, height);
310 }
311
312 return ret;
313 }
314
315 static int mt9m111_setup_pixfmt(struct i2c_client *client, u16 outfmt)
316 {
317 int ret;
318
319 ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
320 if (!ret)
321 ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
322 return ret;
323 }
324
325 static int mt9m111_setfmt_bayer8(struct i2c_client *client)
326 {
327 return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_PROCESSED_BAYER |
328 MT9M111_OUTFMT_RGB);
329 }
330
331 static int mt9m111_setfmt_bayer10(struct i2c_client *client)
332 {
333 return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_BYPASS_IFP);
334 }
335
336 static int mt9m111_setfmt_rgb565(struct i2c_client *client)
337 {
338 struct mt9m111 *mt9m111 = to_mt9m111(client);
339 int val = 0;
340
341 if (mt9m111->swap_rgb_red_blue)
342 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
343 if (mt9m111->swap_rgb_even_odd)
344 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
345 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
346
347 return mt9m111_setup_pixfmt(client, val);
348 }
349
350 static int mt9m111_setfmt_rgb555(struct i2c_client *client)
351 {
352 struct mt9m111 *mt9m111 = to_mt9m111(client);
353 int val = 0;
354
355 if (mt9m111->swap_rgb_red_blue)
356 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
357 if (mt9m111->swap_rgb_even_odd)
358 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
359 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
360
361 return mt9m111_setup_pixfmt(client, val);
362 }
363
364 static int mt9m111_setfmt_yuv(struct i2c_client *client)
365 {
366 struct mt9m111 *mt9m111 = to_mt9m111(client);
367 int val = 0;
368
369 if (mt9m111->swap_yuv_cb_cr)
370 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
371 if (mt9m111->swap_yuv_y_chromas)
372 val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
373
374 return mt9m111_setup_pixfmt(client, val);
375 }
376
377 static int mt9m111_enable(struct i2c_client *client)
378 {
379 struct mt9m111 *mt9m111 = to_mt9m111(client);
380 int ret;
381
382 ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
383 if (!ret)
384 mt9m111->powered = 1;
385 return ret;
386 }
387
388 static int mt9m111_reset(struct i2c_client *client)
389 {
390 int ret;
391
392 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
393 if (!ret)
394 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
395 if (!ret)
396 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
397 | MT9M111_RESET_RESET_SOC);
398
399 return ret;
400 }
401
402 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
403 {
404 struct soc_camera_link *icl = to_soc_camera_link(icd);
405 unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
406 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
407 SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
408
409 return soc_camera_apply_sensor_flags(icl, flags);
410 }
411
412 static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
413 {
414 return 0;
415 }
416
417 static int mt9m111_make_rect(struct i2c_client *client,
418 struct v4l2_rect *rect)
419 {
420 struct mt9m111 *mt9m111 = to_mt9m111(client);
421
422 if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
423 mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) {
424 /* Bayer format - even size lengths */
425 rect->width = ALIGN(rect->width, 2);
426 rect->height = ALIGN(rect->height, 2);
427 /* Let the user play with the starting pixel */
428 }
429
430 /* FIXME: the datasheet doesn't specify minimum sizes */
431 soc_camera_limit_side(&rect->left, &rect->width,
432 MT9M111_MIN_DARK_COLS, 2, MT9M111_MAX_WIDTH);
433
434 soc_camera_limit_side(&rect->top, &rect->height,
435 MT9M111_MIN_DARK_ROWS, 2, MT9M111_MAX_HEIGHT);
436
437 return mt9m111_setup_rect(client, rect);
438 }
439
440 static int mt9m111_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
441 {
442 struct v4l2_rect rect = a->c;
443 struct i2c_client *client = v4l2_get_subdevdata(sd);
444 struct mt9m111 *mt9m111 = to_mt9m111(client);
445 int ret;
446
447 dev_dbg(&client->dev, "%s left=%d, top=%d, width=%d, height=%d\n",
448 __func__, rect.left, rect.top, rect.width, rect.height);
449
450 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
451 return -EINVAL;
452
453 ret = mt9m111_make_rect(client, &rect);
454 if (!ret)
455 mt9m111->rect = rect;
456 return ret;
457 }
458
459 static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
460 {
461 struct i2c_client *client = v4l2_get_subdevdata(sd);
462 struct mt9m111 *mt9m111 = to_mt9m111(client);
463
464 a->c = mt9m111->rect;
465 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
466
467 return 0;
468 }
469
470 static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
471 {
472 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
473 return -EINVAL;
474
475 a->bounds.left = MT9M111_MIN_DARK_COLS;
476 a->bounds.top = MT9M111_MIN_DARK_ROWS;
477 a->bounds.width = MT9M111_MAX_WIDTH;
478 a->bounds.height = MT9M111_MAX_HEIGHT;
479 a->defrect = a->bounds;
480 a->pixelaspect.numerator = 1;
481 a->pixelaspect.denominator = 1;
482
483 return 0;
484 }
485
486 static int mt9m111_g_fmt(struct v4l2_subdev *sd,
487 struct v4l2_mbus_framefmt *mf)
488 {
489 struct i2c_client *client = v4l2_get_subdevdata(sd);
490 struct mt9m111 *mt9m111 = to_mt9m111(client);
491
492 mf->width = mt9m111->rect.width;
493 mf->height = mt9m111->rect.height;
494 mf->code = mt9m111->fmt->code;
495 mf->colorspace = mt9m111->fmt->colorspace;
496 mf->field = V4L2_FIELD_NONE;
497
498 return 0;
499 }
500
501 static int mt9m111_set_pixfmt(struct i2c_client *client,
502 enum v4l2_mbus_pixelcode code)
503 {
504 struct mt9m111 *mt9m111 = to_mt9m111(client);
505 int ret;
506
507 switch (code) {
508 case V4L2_MBUS_FMT_SBGGR8_1X8:
509 ret = mt9m111_setfmt_bayer8(client);
510 break;
511 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
512 ret = mt9m111_setfmt_bayer10(client);
513 break;
514 case V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE:
515 ret = mt9m111_setfmt_rgb555(client);
516 break;
517 case V4L2_MBUS_FMT_RGB565_2X8_LE:
518 ret = mt9m111_setfmt_rgb565(client);
519 break;
520 case V4L2_MBUS_FMT_UYVY8_2X8:
521 mt9m111->swap_yuv_y_chromas = 0;
522 mt9m111->swap_yuv_cb_cr = 0;
523 ret = mt9m111_setfmt_yuv(client);
524 break;
525 case V4L2_MBUS_FMT_VYUY8_2X8:
526 mt9m111->swap_yuv_y_chromas = 0;
527 mt9m111->swap_yuv_cb_cr = 1;
528 ret = mt9m111_setfmt_yuv(client);
529 break;
530 case V4L2_MBUS_FMT_YUYV8_2X8:
531 mt9m111->swap_yuv_y_chromas = 1;
532 mt9m111->swap_yuv_cb_cr = 0;
533 ret = mt9m111_setfmt_yuv(client);
534 break;
535 case V4L2_MBUS_FMT_YVYU8_2X8:
536 mt9m111->swap_yuv_y_chromas = 1;
537 mt9m111->swap_yuv_cb_cr = 1;
538 ret = mt9m111_setfmt_yuv(client);
539 break;
540 default:
541 dev_err(&client->dev, "Pixel format not handled : %x\n",
542 code);
543 ret = -EINVAL;
544 }
545
546 return ret;
547 }
548
549 static int mt9m111_s_fmt(struct v4l2_subdev *sd,
550 struct v4l2_mbus_framefmt *mf)
551 {
552 struct i2c_client *client = v4l2_get_subdevdata(sd);
553 const struct mt9m111_datafmt *fmt;
554 struct mt9m111 *mt9m111 = to_mt9m111(client);
555 struct v4l2_rect rect = {
556 .left = mt9m111->rect.left,
557 .top = mt9m111->rect.top,
558 .width = mf->width,
559 .height = mf->height,
560 };
561 int ret;
562
563 fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
564 ARRAY_SIZE(mt9m111_colour_fmts));
565 if (!fmt)
566 return -EINVAL;
567
568 dev_dbg(&client->dev,
569 "%s code=%x left=%d, top=%d, width=%d, height=%d\n", __func__,
570 mf->code, rect.left, rect.top, rect.width, rect.height);
571
572 ret = mt9m111_make_rect(client, &rect);
573 if (!ret)
574 ret = mt9m111_set_pixfmt(client, mf->code);
575 if (!ret) {
576 mt9m111->rect = rect;
577 mt9m111->fmt = fmt;
578 mf->colorspace = fmt->colorspace;
579 }
580
581 return ret;
582 }
583
584 static int mt9m111_try_fmt(struct v4l2_subdev *sd,
585 struct v4l2_mbus_framefmt *mf)
586 {
587 struct i2c_client *client = v4l2_get_subdevdata(sd);
588 struct mt9m111 *mt9m111 = to_mt9m111(client);
589 const struct mt9m111_datafmt *fmt;
590 bool bayer = mf->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
591 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE;
592
593 fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
594 ARRAY_SIZE(mt9m111_colour_fmts));
595 if (!fmt) {
596 fmt = mt9m111->fmt;
597 mf->code = fmt->code;
598 }
599
600 /*
601 * With Bayer format enforce even side lengths, but let the user play
602 * with the starting pixel
603 */
604
605 if (mf->height > MT9M111_MAX_HEIGHT)
606 mf->height = MT9M111_MAX_HEIGHT;
607 else if (mf->height < 2)
608 mf->height = 2;
609 else if (bayer)
610 mf->height = ALIGN(mf->height, 2);
611
612 if (mf->width > MT9M111_MAX_WIDTH)
613 mf->width = MT9M111_MAX_WIDTH;
614 else if (mf->width < 2)
615 mf->width = 2;
616 else if (bayer)
617 mf->width = ALIGN(mf->width, 2);
618
619 mf->colorspace = fmt->colorspace;
620
621 return 0;
622 }
623
624 static int mt9m111_g_chip_ident(struct v4l2_subdev *sd,
625 struct v4l2_dbg_chip_ident *id)
626 {
627 struct i2c_client *client = v4l2_get_subdevdata(sd);
628 struct mt9m111 *mt9m111 = to_mt9m111(client);
629
630 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
631 return -EINVAL;
632
633 if (id->match.addr != client->addr)
634 return -ENODEV;
635
636 id->ident = mt9m111->model;
637 id->revision = 0;
638
639 return 0;
640 }
641
642 #ifdef CONFIG_VIDEO_ADV_DEBUG
643 static int mt9m111_g_register(struct v4l2_subdev *sd,
644 struct v4l2_dbg_register *reg)
645 {
646 struct i2c_client *client = v4l2_get_subdevdata(sd);
647 int val;
648
649 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
650 return -EINVAL;
651 if (reg->match.addr != client->addr)
652 return -ENODEV;
653
654 val = mt9m111_reg_read(client, reg->reg);
655 reg->size = 2;
656 reg->val = (u64)val;
657
658 if (reg->val > 0xffff)
659 return -EIO;
660
661 return 0;
662 }
663
664 static int mt9m111_s_register(struct v4l2_subdev *sd,
665 struct v4l2_dbg_register *reg)
666 {
667 struct i2c_client *client = v4l2_get_subdevdata(sd);
668
669 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
670 return -EINVAL;
671
672 if (reg->match.addr != client->addr)
673 return -ENODEV;
674
675 if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
676 return -EIO;
677
678 return 0;
679 }
680 #endif
681
682 static const struct v4l2_queryctrl mt9m111_controls[] = {
683 {
684 .id = V4L2_CID_VFLIP,
685 .type = V4L2_CTRL_TYPE_BOOLEAN,
686 .name = "Flip Verticaly",
687 .minimum = 0,
688 .maximum = 1,
689 .step = 1,
690 .default_value = 0,
691 }, {
692 .id = V4L2_CID_HFLIP,
693 .type = V4L2_CTRL_TYPE_BOOLEAN,
694 .name = "Flip Horizontaly",
695 .minimum = 0,
696 .maximum = 1,
697 .step = 1,
698 .default_value = 0,
699 }, { /* gain = 1/32*val (=>gain=1 if val==32) */
700 .id = V4L2_CID_GAIN,
701 .type = V4L2_CTRL_TYPE_INTEGER,
702 .name = "Gain",
703 .minimum = 0,
704 .maximum = 63 * 2 * 2,
705 .step = 1,
706 .default_value = 32,
707 .flags = V4L2_CTRL_FLAG_SLIDER,
708 }, {
709 .id = V4L2_CID_EXPOSURE_AUTO,
710 .type = V4L2_CTRL_TYPE_BOOLEAN,
711 .name = "Auto Exposure",
712 .minimum = 0,
713 .maximum = 1,
714 .step = 1,
715 .default_value = 1,
716 }
717 };
718
719 static int mt9m111_resume(struct soc_camera_device *icd);
720 static int mt9m111_suspend(struct soc_camera_device *icd, pm_message_t state);
721
722 static struct soc_camera_ops mt9m111_ops = {
723 .suspend = mt9m111_suspend,
724 .resume = mt9m111_resume,
725 .query_bus_param = mt9m111_query_bus_param,
726 .set_bus_param = mt9m111_set_bus_param,
727 .controls = mt9m111_controls,
728 .num_controls = ARRAY_SIZE(mt9m111_controls),
729 };
730
731 static int mt9m111_set_flip(struct i2c_client *client, int flip, int mask)
732 {
733 struct mt9m111 *mt9m111 = to_mt9m111(client);
734 int ret;
735
736 if (mt9m111->context == HIGHPOWER) {
737 if (flip)
738 ret = reg_set(READ_MODE_B, mask);
739 else
740 ret = reg_clear(READ_MODE_B, mask);
741 } else {
742 if (flip)
743 ret = reg_set(READ_MODE_A, mask);
744 else
745 ret = reg_clear(READ_MODE_A, mask);
746 }
747
748 return ret;
749 }
750
751 static int mt9m111_get_global_gain(struct i2c_client *client)
752 {
753 int data;
754
755 data = reg_read(GLOBAL_GAIN);
756 if (data >= 0)
757 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
758 (1 << ((data >> 9) & 1));
759 return data;
760 }
761
762 static int mt9m111_set_global_gain(struct i2c_client *client, int gain)
763 {
764 struct mt9m111 *mt9m111 = to_mt9m111(client);
765 u16 val;
766
767 if (gain > 63 * 2 * 2)
768 return -EINVAL;
769
770 mt9m111->gain = gain;
771 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
772 val = (1 << 10) | (1 << 9) | (gain / 4);
773 else if ((gain >= 64) && (gain < 64 * 2))
774 val = (1 << 9) | (gain / 2);
775 else
776 val = gain;
777
778 return reg_write(GLOBAL_GAIN, val);
779 }
780
781 static int mt9m111_set_autoexposure(struct i2c_client *client, int on)
782 {
783 struct mt9m111 *mt9m111 = to_mt9m111(client);
784 int ret;
785
786 if (on)
787 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
788 else
789 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
790
791 if (!ret)
792 mt9m111->autoexposure = on;
793
794 return ret;
795 }
796
797 static int mt9m111_set_autowhitebalance(struct i2c_client *client, int on)
798 {
799 struct mt9m111 *mt9m111 = to_mt9m111(client);
800 int ret;
801
802 if (on)
803 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
804 else
805 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
806
807 if (!ret)
808 mt9m111->autowhitebalance = on;
809
810 return ret;
811 }
812
813 static int mt9m111_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
814 {
815 struct i2c_client *client = v4l2_get_subdevdata(sd);
816 struct mt9m111 *mt9m111 = to_mt9m111(client);
817 int data;
818
819 switch (ctrl->id) {
820 case V4L2_CID_VFLIP:
821 if (mt9m111->context == HIGHPOWER)
822 data = reg_read(READ_MODE_B);
823 else
824 data = reg_read(READ_MODE_A);
825
826 if (data < 0)
827 return -EIO;
828 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
829 break;
830 case V4L2_CID_HFLIP:
831 if (mt9m111->context == HIGHPOWER)
832 data = reg_read(READ_MODE_B);
833 else
834 data = reg_read(READ_MODE_A);
835
836 if (data < 0)
837 return -EIO;
838 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
839 break;
840 case V4L2_CID_GAIN:
841 data = mt9m111_get_global_gain(client);
842 if (data < 0)
843 return data;
844 ctrl->value = data;
845 break;
846 case V4L2_CID_EXPOSURE_AUTO:
847 ctrl->value = mt9m111->autoexposure;
848 break;
849 case V4L2_CID_AUTO_WHITE_BALANCE:
850 ctrl->value = mt9m111->autowhitebalance;
851 break;
852 }
853 return 0;
854 }
855
856 static int mt9m111_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
857 {
858 struct i2c_client *client = v4l2_get_subdevdata(sd);
859 struct mt9m111 *mt9m111 = to_mt9m111(client);
860 const struct v4l2_queryctrl *qctrl;
861 int ret;
862
863 qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
864 if (!qctrl)
865 return -EINVAL;
866
867 switch (ctrl->id) {
868 case V4L2_CID_VFLIP:
869 mt9m111->vflip = ctrl->value;
870 ret = mt9m111_set_flip(client, ctrl->value,
871 MT9M111_RMB_MIRROR_ROWS);
872 break;
873 case V4L2_CID_HFLIP:
874 mt9m111->hflip = ctrl->value;
875 ret = mt9m111_set_flip(client, ctrl->value,
876 MT9M111_RMB_MIRROR_COLS);
877 break;
878 case V4L2_CID_GAIN:
879 ret = mt9m111_set_global_gain(client, ctrl->value);
880 break;
881 case V4L2_CID_EXPOSURE_AUTO:
882 ret = mt9m111_set_autoexposure(client, ctrl->value);
883 break;
884 case V4L2_CID_AUTO_WHITE_BALANCE:
885 ret = mt9m111_set_autowhitebalance(client, ctrl->value);
886 break;
887 default:
888 ret = -EINVAL;
889 }
890
891 return ret;
892 }
893
894 static int mt9m111_suspend(struct soc_camera_device *icd, pm_message_t state)
895 {
896 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
897 struct mt9m111 *mt9m111 = to_mt9m111(client);
898
899 mt9m111->gain = mt9m111_get_global_gain(client);
900
901 return 0;
902 }
903
904 static int mt9m111_restore_state(struct i2c_client *client)
905 {
906 struct mt9m111 *mt9m111 = to_mt9m111(client);
907
908 mt9m111_set_context(client, mt9m111->context);
909 mt9m111_set_pixfmt(client, mt9m111->fmt->code);
910 mt9m111_setup_rect(client, &mt9m111->rect);
911 mt9m111_set_flip(client, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
912 mt9m111_set_flip(client, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
913 mt9m111_set_global_gain(client, mt9m111->gain);
914 mt9m111_set_autoexposure(client, mt9m111->autoexposure);
915 mt9m111_set_autowhitebalance(client, mt9m111->autowhitebalance);
916 return 0;
917 }
918
919 static int mt9m111_resume(struct soc_camera_device *icd)
920 {
921 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
922 struct mt9m111 *mt9m111 = to_mt9m111(client);
923 int ret = 0;
924
925 if (mt9m111->powered) {
926 ret = mt9m111_enable(client);
927 if (!ret)
928 ret = mt9m111_reset(client);
929 if (!ret)
930 ret = mt9m111_restore_state(client);
931 }
932 return ret;
933 }
934
935 static int mt9m111_init(struct i2c_client *client)
936 {
937 struct mt9m111 *mt9m111 = to_mt9m111(client);
938 int ret;
939
940 mt9m111->context = HIGHPOWER;
941 ret = mt9m111_enable(client);
942 if (!ret)
943 ret = mt9m111_reset(client);
944 if (!ret)
945 ret = mt9m111_set_context(client, mt9m111->context);
946 if (!ret)
947 ret = mt9m111_set_autoexposure(client, mt9m111->autoexposure);
948 if (ret)
949 dev_err(&client->dev, "mt9m111 init failed: %d\n", ret);
950 return ret;
951 }
952
953 /*
954 * Interface active, can use i2c. If it fails, it can indeed mean, that
955 * this wasn't our capture interface, so, we wait for the right one
956 */
957 static int mt9m111_video_probe(struct soc_camera_device *icd,
958 struct i2c_client *client)
959 {
960 struct mt9m111 *mt9m111 = to_mt9m111(client);
961 s32 data;
962 int ret;
963
964 /*
965 * We must have a parent by now. And it cannot be a wrong one.
966 * So this entire test is completely redundant.
967 */
968 if (!icd->dev.parent ||
969 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
970 return -ENODEV;
971
972 mt9m111->autoexposure = 1;
973 mt9m111->autowhitebalance = 1;
974
975 mt9m111->swap_rgb_even_odd = 1;
976 mt9m111->swap_rgb_red_blue = 1;
977
978 data = reg_read(CHIP_VERSION);
979
980 switch (data) {
981 case 0x143a: /* MT9M111 or MT9M131 */
982 mt9m111->model = V4L2_IDENT_MT9M111;
983 dev_info(&client->dev,
984 "Detected a MT9M111/MT9M131 chip ID %x\n", data);
985 break;
986 case 0x148c: /* MT9M112 */
987 mt9m111->model = V4L2_IDENT_MT9M112;
988 dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data);
989 break;
990 default:
991 ret = -ENODEV;
992 dev_err(&client->dev,
993 "No MT9M111/MT9M112/MT9M131 chip detected register read %x\n",
994 data);
995 goto ei2c;
996 }
997
998 ret = mt9m111_init(client);
999
1000 ei2c:
1001 return ret;
1002 }
1003
1004 static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
1005 .g_ctrl = mt9m111_g_ctrl,
1006 .s_ctrl = mt9m111_s_ctrl,
1007 .g_chip_ident = mt9m111_g_chip_ident,
1008 #ifdef CONFIG_VIDEO_ADV_DEBUG
1009 .g_register = mt9m111_g_register,
1010 .s_register = mt9m111_s_register,
1011 #endif
1012 };
1013
1014 static int mt9m111_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
1015 enum v4l2_mbus_pixelcode *code)
1016 {
1017 if (index >= ARRAY_SIZE(mt9m111_colour_fmts))
1018 return -EINVAL;
1019
1020 *code = mt9m111_colour_fmts[index].code;
1021 return 0;
1022 }
1023
1024 static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
1025 .s_mbus_fmt = mt9m111_s_fmt,
1026 .g_mbus_fmt = mt9m111_g_fmt,
1027 .try_mbus_fmt = mt9m111_try_fmt,
1028 .s_crop = mt9m111_s_crop,
1029 .g_crop = mt9m111_g_crop,
1030 .cropcap = mt9m111_cropcap,
1031 .enum_mbus_fmt = mt9m111_enum_fmt,
1032 };
1033
1034 static struct v4l2_subdev_ops mt9m111_subdev_ops = {
1035 .core = &mt9m111_subdev_core_ops,
1036 .video = &mt9m111_subdev_video_ops,
1037 };
1038
1039 static int mt9m111_probe(struct i2c_client *client,
1040 const struct i2c_device_id *did)
1041 {
1042 struct mt9m111 *mt9m111;
1043 struct soc_camera_device *icd = client->dev.platform_data;
1044 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
1045 struct soc_camera_link *icl;
1046 int ret;
1047
1048 if (!icd) {
1049 dev_err(&client->dev, "mt9m111: soc-camera data missing!\n");
1050 return -EINVAL;
1051 }
1052
1053 icl = to_soc_camera_link(icd);
1054 if (!icl) {
1055 dev_err(&client->dev, "mt9m111: driver needs platform data\n");
1056 return -EINVAL;
1057 }
1058
1059 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
1060 dev_warn(&adapter->dev,
1061 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
1062 return -EIO;
1063 }
1064
1065 mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
1066 if (!mt9m111)
1067 return -ENOMEM;
1068
1069 v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
1070
1071 /* Second stage probe - when a capture adapter is there */
1072 icd->ops = &mt9m111_ops;
1073
1074 mt9m111->rect.left = MT9M111_MIN_DARK_COLS;
1075 mt9m111->rect.top = MT9M111_MIN_DARK_ROWS;
1076 mt9m111->rect.width = MT9M111_MAX_WIDTH;
1077 mt9m111->rect.height = MT9M111_MAX_HEIGHT;
1078 mt9m111->fmt = &mt9m111_colour_fmts[0];
1079
1080 ret = mt9m111_video_probe(icd, client);
1081 if (ret) {
1082 icd->ops = NULL;
1083 kfree(mt9m111);
1084 }
1085
1086 return ret;
1087 }
1088
1089 static int mt9m111_remove(struct i2c_client *client)
1090 {
1091 struct mt9m111 *mt9m111 = to_mt9m111(client);
1092 struct soc_camera_device *icd = client->dev.platform_data;
1093
1094 icd->ops = NULL;
1095 kfree(mt9m111);
1096
1097 return 0;
1098 }
1099
1100 static const struct i2c_device_id mt9m111_id[] = {
1101 { "mt9m111", 0 },
1102 { }
1103 };
1104 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1105
1106 static struct i2c_driver mt9m111_i2c_driver = {
1107 .driver = {
1108 .name = "mt9m111",
1109 },
1110 .probe = mt9m111_probe,
1111 .remove = mt9m111_remove,
1112 .id_table = mt9m111_id,
1113 };
1114
1115 static int __init mt9m111_mod_init(void)
1116 {
1117 return i2c_add_driver(&mt9m111_i2c_driver);
1118 }
1119
1120 static void __exit mt9m111_mod_exit(void)
1121 {
1122 i2c_del_driver(&mt9m111_i2c_driver);
1123 }
1124
1125 module_init(mt9m111_mod_init);
1126 module_exit(mt9m111_mod_exit);
1127
1128 MODULE_DESCRIPTION("Micron/Aptina MT9M111/MT9M112/MT9M131 Camera driver");
1129 MODULE_AUTHOR("Robert Jarzmik");
1130 MODULE_LICENSE("GPL");
Linux with added FPC-III support