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Merge branch 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / mt9m111.c
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 u16 mask = MT9M111_OUTFMT_PROCESSED_BAYER | MT9M111_OUTFMT_RGB |
319 MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_SWAP_RGB_EVEN |
320 MT9M111_OUTFMT_RGB565 | MT9M111_OUTFMT_RGB555 |
321 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr |
322 MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
323
324 ret = reg_read(OUTPUT_FORMAT_CTRL2_A);
325 if (ret >= 0)
326 ret = reg_write(OUTPUT_FORMAT_CTRL2_A, (ret & ~mask) | outfmt);
327 if (!ret)
328 ret = reg_read(OUTPUT_FORMAT_CTRL2_B);
329 if (ret >= 0)
330 ret = reg_write(OUTPUT_FORMAT_CTRL2_B, (ret & ~mask) | outfmt);
331
332 return ret;
333 }
334
335 static int mt9m111_setfmt_bayer8(struct i2c_client *client)
336 {
337 return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_PROCESSED_BAYER |
338 MT9M111_OUTFMT_RGB);
339 }
340
341 static int mt9m111_setfmt_bayer10(struct i2c_client *client)
342 {
343 return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_BYPASS_IFP);
344 }
345
346 static int mt9m111_setfmt_rgb565(struct i2c_client *client)
347 {
348 struct mt9m111 *mt9m111 = to_mt9m111(client);
349 int val = 0;
350
351 if (mt9m111->swap_rgb_red_blue)
352 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
353 if (mt9m111->swap_rgb_even_odd)
354 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
355 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
356
357 return mt9m111_setup_pixfmt(client, val);
358 }
359
360 static int mt9m111_setfmt_rgb555(struct i2c_client *client)
361 {
362 struct mt9m111 *mt9m111 = to_mt9m111(client);
363 int val = 0;
364
365 if (mt9m111->swap_rgb_red_blue)
366 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
367 if (mt9m111->swap_rgb_even_odd)
368 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
369 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
370
371 return mt9m111_setup_pixfmt(client, val);
372 }
373
374 static int mt9m111_setfmt_yuv(struct i2c_client *client)
375 {
376 struct mt9m111 *mt9m111 = to_mt9m111(client);
377 int val = 0;
378
379 if (mt9m111->swap_yuv_cb_cr)
380 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
381 if (mt9m111->swap_yuv_y_chromas)
382 val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
383
384 return mt9m111_setup_pixfmt(client, val);
385 }
386
387 static int mt9m111_enable(struct i2c_client *client)
388 {
389 struct mt9m111 *mt9m111 = to_mt9m111(client);
390 int ret;
391
392 ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
393 if (!ret)
394 mt9m111->powered = 1;
395 return ret;
396 }
397
398 static int mt9m111_reset(struct i2c_client *client)
399 {
400 int ret;
401
402 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
403 if (!ret)
404 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
405 if (!ret)
406 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
407 | MT9M111_RESET_RESET_SOC);
408
409 return ret;
410 }
411
412 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
413 {
414 struct soc_camera_link *icl = to_soc_camera_link(icd);
415 unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
416 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
417 SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
418
419 return soc_camera_apply_sensor_flags(icl, flags);
420 }
421
422 static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
423 {
424 return 0;
425 }
426
427 static int mt9m111_make_rect(struct i2c_client *client,
428 struct v4l2_rect *rect)
429 {
430 struct mt9m111 *mt9m111 = to_mt9m111(client);
431
432 if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
433 mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) {
434 /* Bayer format - even size lengths */
435 rect->width = ALIGN(rect->width, 2);
436 rect->height = ALIGN(rect->height, 2);
437 /* Let the user play with the starting pixel */
438 }
439
440 /* FIXME: the datasheet doesn't specify minimum sizes */
441 soc_camera_limit_side(&rect->left, &rect->width,
442 MT9M111_MIN_DARK_COLS, 2, MT9M111_MAX_WIDTH);
443
444 soc_camera_limit_side(&rect->top, &rect->height,
445 MT9M111_MIN_DARK_ROWS, 2, MT9M111_MAX_HEIGHT);
446
447 return mt9m111_setup_rect(client, rect);
448 }
449
450 static int mt9m111_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
451 {
452 struct v4l2_rect rect = a->c;
453 struct i2c_client *client = v4l2_get_subdevdata(sd);
454 struct mt9m111 *mt9m111 = to_mt9m111(client);
455 int ret;
456
457 dev_dbg(&client->dev, "%s left=%d, top=%d, width=%d, height=%d\n",
458 __func__, rect.left, rect.top, rect.width, rect.height);
459
460 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
461 return -EINVAL;
462
463 ret = mt9m111_make_rect(client, &rect);
464 if (!ret)
465 mt9m111->rect = rect;
466 return ret;
467 }
468
469 static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
470 {
471 struct i2c_client *client = v4l2_get_subdevdata(sd);
472 struct mt9m111 *mt9m111 = to_mt9m111(client);
473
474 a->c = mt9m111->rect;
475 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
476
477 return 0;
478 }
479
480 static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
481 {
482 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
483 return -EINVAL;
484
485 a->bounds.left = MT9M111_MIN_DARK_COLS;
486 a->bounds.top = MT9M111_MIN_DARK_ROWS;
487 a->bounds.width = MT9M111_MAX_WIDTH;
488 a->bounds.height = MT9M111_MAX_HEIGHT;
489 a->defrect = a->bounds;
490 a->pixelaspect.numerator = 1;
491 a->pixelaspect.denominator = 1;
492
493 return 0;
494 }
495
496 static int mt9m111_g_fmt(struct v4l2_subdev *sd,
497 struct v4l2_mbus_framefmt *mf)
498 {
499 struct i2c_client *client = v4l2_get_subdevdata(sd);
500 struct mt9m111 *mt9m111 = to_mt9m111(client);
501
502 mf->width = mt9m111->rect.width;
503 mf->height = mt9m111->rect.height;
504 mf->code = mt9m111->fmt->code;
505 mf->colorspace = mt9m111->fmt->colorspace;
506 mf->field = V4L2_FIELD_NONE;
507
508 return 0;
509 }
510
511 static int mt9m111_set_pixfmt(struct i2c_client *client,
512 enum v4l2_mbus_pixelcode code)
513 {
514 struct mt9m111 *mt9m111 = to_mt9m111(client);
515 int ret;
516
517 switch (code) {
518 case V4L2_MBUS_FMT_SBGGR8_1X8:
519 ret = mt9m111_setfmt_bayer8(client);
520 break;
521 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
522 ret = mt9m111_setfmt_bayer10(client);
523 break;
524 case V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE:
525 ret = mt9m111_setfmt_rgb555(client);
526 break;
527 case V4L2_MBUS_FMT_RGB565_2X8_LE:
528 ret = mt9m111_setfmt_rgb565(client);
529 break;
530 case V4L2_MBUS_FMT_UYVY8_2X8:
531 mt9m111->swap_yuv_y_chromas = 0;
532 mt9m111->swap_yuv_cb_cr = 0;
533 ret = mt9m111_setfmt_yuv(client);
534 break;
535 case V4L2_MBUS_FMT_VYUY8_2X8:
536 mt9m111->swap_yuv_y_chromas = 0;
537 mt9m111->swap_yuv_cb_cr = 1;
538 ret = mt9m111_setfmt_yuv(client);
539 break;
540 case V4L2_MBUS_FMT_YUYV8_2X8:
541 mt9m111->swap_yuv_y_chromas = 1;
542 mt9m111->swap_yuv_cb_cr = 0;
543 ret = mt9m111_setfmt_yuv(client);
544 break;
545 case V4L2_MBUS_FMT_YVYU8_2X8:
546 mt9m111->swap_yuv_y_chromas = 1;
547 mt9m111->swap_yuv_cb_cr = 1;
548 ret = mt9m111_setfmt_yuv(client);
549 break;
550 default:
551 dev_err(&client->dev, "Pixel format not handled : %x\n",
552 code);
553 ret = -EINVAL;
554 }
555
556 return ret;
557 }
558
559 static int mt9m111_s_fmt(struct v4l2_subdev *sd,
560 struct v4l2_mbus_framefmt *mf)
561 {
562 struct i2c_client *client = v4l2_get_subdevdata(sd);
563 const struct mt9m111_datafmt *fmt;
564 struct mt9m111 *mt9m111 = to_mt9m111(client);
565 struct v4l2_rect rect = {
566 .left = mt9m111->rect.left,
567 .top = mt9m111->rect.top,
568 .width = mf->width,
569 .height = mf->height,
570 };
571 int ret;
572
573 fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
574 ARRAY_SIZE(mt9m111_colour_fmts));
575 if (!fmt)
576 return -EINVAL;
577
578 dev_dbg(&client->dev,
579 "%s code=%x left=%d, top=%d, width=%d, height=%d\n", __func__,
580 mf->code, rect.left, rect.top, rect.width, rect.height);
581
582 ret = mt9m111_make_rect(client, &rect);
583 if (!ret)
584 ret = mt9m111_set_pixfmt(client, mf->code);
585 if (!ret) {
586 mt9m111->rect = rect;
587 mt9m111->fmt = fmt;
588 mf->colorspace = fmt->colorspace;
589 }
590
591 return ret;
592 }
593
594 static int mt9m111_try_fmt(struct v4l2_subdev *sd,
595 struct v4l2_mbus_framefmt *mf)
596 {
597 struct i2c_client *client = v4l2_get_subdevdata(sd);
598 struct mt9m111 *mt9m111 = to_mt9m111(client);
599 const struct mt9m111_datafmt *fmt;
600 bool bayer = mf->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
601 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE;
602
603 fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
604 ARRAY_SIZE(mt9m111_colour_fmts));
605 if (!fmt) {
606 fmt = mt9m111->fmt;
607 mf->code = fmt->code;
608 }
609
610 /*
611 * With Bayer format enforce even side lengths, but let the user play
612 * with the starting pixel
613 */
614
615 if (mf->height > MT9M111_MAX_HEIGHT)
616 mf->height = MT9M111_MAX_HEIGHT;
617 else if (mf->height < 2)
618 mf->height = 2;
619 else if (bayer)
620 mf->height = ALIGN(mf->height, 2);
621
622 if (mf->width > MT9M111_MAX_WIDTH)
623 mf->width = MT9M111_MAX_WIDTH;
624 else if (mf->width < 2)
625 mf->width = 2;
626 else if (bayer)
627 mf->width = ALIGN(mf->width, 2);
628
629 mf->colorspace = fmt->colorspace;
630
631 return 0;
632 }
633
634 static int mt9m111_g_chip_ident(struct v4l2_subdev *sd,
635 struct v4l2_dbg_chip_ident *id)
636 {
637 struct i2c_client *client = v4l2_get_subdevdata(sd);
638 struct mt9m111 *mt9m111 = to_mt9m111(client);
639
640 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
641 return -EINVAL;
642
643 if (id->match.addr != client->addr)
644 return -ENODEV;
645
646 id->ident = mt9m111->model;
647 id->revision = 0;
648
649 return 0;
650 }
651
652 #ifdef CONFIG_VIDEO_ADV_DEBUG
653 static int mt9m111_g_register(struct v4l2_subdev *sd,
654 struct v4l2_dbg_register *reg)
655 {
656 struct i2c_client *client = v4l2_get_subdevdata(sd);
657 int val;
658
659 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
660 return -EINVAL;
661 if (reg->match.addr != client->addr)
662 return -ENODEV;
663
664 val = mt9m111_reg_read(client, reg->reg);
665 reg->size = 2;
666 reg->val = (u64)val;
667
668 if (reg->val > 0xffff)
669 return -EIO;
670
671 return 0;
672 }
673
674 static int mt9m111_s_register(struct v4l2_subdev *sd,
675 struct v4l2_dbg_register *reg)
676 {
677 struct i2c_client *client = v4l2_get_subdevdata(sd);
678
679 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
680 return -EINVAL;
681
682 if (reg->match.addr != client->addr)
683 return -ENODEV;
684
685 if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
686 return -EIO;
687
688 return 0;
689 }
690 #endif
691
692 static const struct v4l2_queryctrl mt9m111_controls[] = {
693 {
694 .id = V4L2_CID_VFLIP,
695 .type = V4L2_CTRL_TYPE_BOOLEAN,
696 .name = "Flip Verticaly",
697 .minimum = 0,
698 .maximum = 1,
699 .step = 1,
700 .default_value = 0,
701 }, {
702 .id = V4L2_CID_HFLIP,
703 .type = V4L2_CTRL_TYPE_BOOLEAN,
704 .name = "Flip Horizontaly",
705 .minimum = 0,
706 .maximum = 1,
707 .step = 1,
708 .default_value = 0,
709 }, { /* gain = 1/32*val (=>gain=1 if val==32) */
710 .id = V4L2_CID_GAIN,
711 .type = V4L2_CTRL_TYPE_INTEGER,
712 .name = "Gain",
713 .minimum = 0,
714 .maximum = 63 * 2 * 2,
715 .step = 1,
716 .default_value = 32,
717 .flags = V4L2_CTRL_FLAG_SLIDER,
718 }, {
719 .id = V4L2_CID_EXPOSURE_AUTO,
720 .type = V4L2_CTRL_TYPE_BOOLEAN,
721 .name = "Auto Exposure",
722 .minimum = 0,
723 .maximum = 1,
724 .step = 1,
725 .default_value = 1,
726 }
727 };
728
729 static int mt9m111_resume(struct soc_camera_device *icd);
730 static int mt9m111_suspend(struct soc_camera_device *icd, pm_message_t state);
731
732 static struct soc_camera_ops mt9m111_ops = {
733 .suspend = mt9m111_suspend,
734 .resume = mt9m111_resume,
735 .query_bus_param = mt9m111_query_bus_param,
736 .set_bus_param = mt9m111_set_bus_param,
737 .controls = mt9m111_controls,
738 .num_controls = ARRAY_SIZE(mt9m111_controls),
739 };
740
741 static int mt9m111_set_flip(struct i2c_client *client, int flip, int mask)
742 {
743 struct mt9m111 *mt9m111 = to_mt9m111(client);
744 int ret;
745
746 if (mt9m111->context == HIGHPOWER) {
747 if (flip)
748 ret = reg_set(READ_MODE_B, mask);
749 else
750 ret = reg_clear(READ_MODE_B, mask);
751 } else {
752 if (flip)
753 ret = reg_set(READ_MODE_A, mask);
754 else
755 ret = reg_clear(READ_MODE_A, mask);
756 }
757
758 return ret;
759 }
760
761 static int mt9m111_get_global_gain(struct i2c_client *client)
762 {
763 int data;
764
765 data = reg_read(GLOBAL_GAIN);
766 if (data >= 0)
767 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
768 (1 << ((data >> 9) & 1));
769 return data;
770 }
771
772 static int mt9m111_set_global_gain(struct i2c_client *client, int gain)
773 {
774 struct mt9m111 *mt9m111 = to_mt9m111(client);
775 u16 val;
776
777 if (gain > 63 * 2 * 2)
778 return -EINVAL;
779
780 mt9m111->gain = gain;
781 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
782 val = (1 << 10) | (1 << 9) | (gain / 4);
783 else if ((gain >= 64) && (gain < 64 * 2))
784 val = (1 << 9) | (gain / 2);
785 else
786 val = gain;
787
788 return reg_write(GLOBAL_GAIN, val);
789 }
790
791 static int mt9m111_set_autoexposure(struct i2c_client *client, int on)
792 {
793 struct mt9m111 *mt9m111 = to_mt9m111(client);
794 int ret;
795
796 if (on)
797 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
798 else
799 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
800
801 if (!ret)
802 mt9m111->autoexposure = on;
803
804 return ret;
805 }
806
807 static int mt9m111_set_autowhitebalance(struct i2c_client *client, int on)
808 {
809 struct mt9m111 *mt9m111 = to_mt9m111(client);
810 int ret;
811
812 if (on)
813 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
814 else
815 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
816
817 if (!ret)
818 mt9m111->autowhitebalance = on;
819
820 return ret;
821 }
822
823 static int mt9m111_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
824 {
825 struct i2c_client *client = v4l2_get_subdevdata(sd);
826 struct mt9m111 *mt9m111 = to_mt9m111(client);
827 int data;
828
829 switch (ctrl->id) {
830 case V4L2_CID_VFLIP:
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_ROWS);
839 break;
840 case V4L2_CID_HFLIP:
841 if (mt9m111->context == HIGHPOWER)
842 data = reg_read(READ_MODE_B);
843 else
844 data = reg_read(READ_MODE_A);
845
846 if (data < 0)
847 return -EIO;
848 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
849 break;
850 case V4L2_CID_GAIN:
851 data = mt9m111_get_global_gain(client);
852 if (data < 0)
853 return data;
854 ctrl->value = data;
855 break;
856 case V4L2_CID_EXPOSURE_AUTO:
857 ctrl->value = mt9m111->autoexposure;
858 break;
859 case V4L2_CID_AUTO_WHITE_BALANCE:
860 ctrl->value = mt9m111->autowhitebalance;
861 break;
862 }
863 return 0;
864 }
865
866 static int mt9m111_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
867 {
868 struct i2c_client *client = v4l2_get_subdevdata(sd);
869 struct mt9m111 *mt9m111 = to_mt9m111(client);
870 const struct v4l2_queryctrl *qctrl;
871 int ret;
872
873 qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
874 if (!qctrl)
875 return -EINVAL;
876
877 switch (ctrl->id) {
878 case V4L2_CID_VFLIP:
879 mt9m111->vflip = ctrl->value;
880 ret = mt9m111_set_flip(client, ctrl->value,
881 MT9M111_RMB_MIRROR_ROWS);
882 break;
883 case V4L2_CID_HFLIP:
884 mt9m111->hflip = ctrl->value;
885 ret = mt9m111_set_flip(client, ctrl->value,
886 MT9M111_RMB_MIRROR_COLS);
887 break;
888 case V4L2_CID_GAIN:
889 ret = mt9m111_set_global_gain(client, ctrl->value);
890 break;
891 case V4L2_CID_EXPOSURE_AUTO:
892 ret = mt9m111_set_autoexposure(client, ctrl->value);
893 break;
894 case V4L2_CID_AUTO_WHITE_BALANCE:
895 ret = mt9m111_set_autowhitebalance(client, ctrl->value);
896 break;
897 default:
898 ret = -EINVAL;
899 }
900
901 return ret;
902 }
903
904 static int mt9m111_suspend(struct soc_camera_device *icd, pm_message_t state)
905 {
906 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
907 struct mt9m111 *mt9m111 = to_mt9m111(client);
908
909 mt9m111->gain = mt9m111_get_global_gain(client);
910
911 return 0;
912 }
913
914 static int mt9m111_restore_state(struct i2c_client *client)
915 {
916 struct mt9m111 *mt9m111 = to_mt9m111(client);
917
918 mt9m111_set_context(client, mt9m111->context);
919 mt9m111_set_pixfmt(client, mt9m111->fmt->code);
920 mt9m111_setup_rect(client, &mt9m111->rect);
921 mt9m111_set_flip(client, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
922 mt9m111_set_flip(client, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
923 mt9m111_set_global_gain(client, mt9m111->gain);
924 mt9m111_set_autoexposure(client, mt9m111->autoexposure);
925 mt9m111_set_autowhitebalance(client, mt9m111->autowhitebalance);
926 return 0;
927 }
928
929 static int mt9m111_resume(struct soc_camera_device *icd)
930 {
931 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
932 struct mt9m111 *mt9m111 = to_mt9m111(client);
933 int ret = 0;
934
935 if (mt9m111->powered) {
936 ret = mt9m111_enable(client);
937 if (!ret)
938 ret = mt9m111_reset(client);
939 if (!ret)
940 ret = mt9m111_restore_state(client);
941 }
942 return ret;
943 }
944
945 static int mt9m111_init(struct i2c_client *client)
946 {
947 struct mt9m111 *mt9m111 = to_mt9m111(client);
948 int ret;
949
950 mt9m111->context = HIGHPOWER;
951 ret = mt9m111_enable(client);
952 if (!ret)
953 ret = mt9m111_reset(client);
954 if (!ret)
955 ret = mt9m111_set_context(client, mt9m111->context);
956 if (!ret)
957 ret = mt9m111_set_autoexposure(client, mt9m111->autoexposure);
958 if (ret)
959 dev_err(&client->dev, "mt9m111 init failed: %d\n", ret);
960 return ret;
961 }
962
963 /*
964 * Interface active, can use i2c. If it fails, it can indeed mean, that
965 * this wasn't our capture interface, so, we wait for the right one
966 */
967 static int mt9m111_video_probe(struct soc_camera_device *icd,
968 struct i2c_client *client)
969 {
970 struct mt9m111 *mt9m111 = to_mt9m111(client);
971 s32 data;
972 int ret;
973
974 /*
975 * We must have a parent by now. And it cannot be a wrong one.
976 * So this entire test is completely redundant.
977 */
978 if (!icd->dev.parent ||
979 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
980 return -ENODEV;
981
982 mt9m111->autoexposure = 1;
983 mt9m111->autowhitebalance = 1;
984
985 mt9m111->swap_rgb_even_odd = 1;
986 mt9m111->swap_rgb_red_blue = 1;
987
988 data = reg_read(CHIP_VERSION);
989
990 switch (data) {
991 case 0x143a: /* MT9M111 or MT9M131 */
992 mt9m111->model = V4L2_IDENT_MT9M111;
993 dev_info(&client->dev,
994 "Detected a MT9M111/MT9M131 chip ID %x\n", data);
995 break;
996 case 0x148c: /* MT9M112 */
997 mt9m111->model = V4L2_IDENT_MT9M112;
998 dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data);
999 break;
1000 default:
1001 ret = -ENODEV;
1002 dev_err(&client->dev,
1003 "No MT9M111/MT9M112/MT9M131 chip detected register read %x\n",
1004 data);
1005 goto ei2c;
1006 }
1007
1008 ret = mt9m111_init(client);
1009
1010 ei2c:
1011 return ret;
1012 }
1013
1014 static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
1015 .g_ctrl = mt9m111_g_ctrl,
1016 .s_ctrl = mt9m111_s_ctrl,
1017 .g_chip_ident = mt9m111_g_chip_ident,
1018 #ifdef CONFIG_VIDEO_ADV_DEBUG
1019 .g_register = mt9m111_g_register,
1020 .s_register = mt9m111_s_register,
1021 #endif
1022 };
1023
1024 static int mt9m111_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
1025 enum v4l2_mbus_pixelcode *code)
1026 {
1027 if (index >= ARRAY_SIZE(mt9m111_colour_fmts))
1028 return -EINVAL;
1029
1030 *code = mt9m111_colour_fmts[index].code;
1031 return 0;
1032 }
1033
1034 static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
1035 .s_mbus_fmt = mt9m111_s_fmt,
1036 .g_mbus_fmt = mt9m111_g_fmt,
1037 .try_mbus_fmt = mt9m111_try_fmt,
1038 .s_crop = mt9m111_s_crop,
1039 .g_crop = mt9m111_g_crop,
1040 .cropcap = mt9m111_cropcap,
1041 .enum_mbus_fmt = mt9m111_enum_fmt,
1042 };
1043
1044 static struct v4l2_subdev_ops mt9m111_subdev_ops = {
1045 .core = &mt9m111_subdev_core_ops,
1046 .video = &mt9m111_subdev_video_ops,
1047 };
1048
1049 static int mt9m111_probe(struct i2c_client *client,
1050 const struct i2c_device_id *did)
1051 {
1052 struct mt9m111 *mt9m111;
1053 struct soc_camera_device *icd = client->dev.platform_data;
1054 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
1055 struct soc_camera_link *icl;
1056 int ret;
1057
1058 if (!icd) {
1059 dev_err(&client->dev, "mt9m111: soc-camera data missing!\n");
1060 return -EINVAL;
1061 }
1062
1063 icl = to_soc_camera_link(icd);
1064 if (!icl) {
1065 dev_err(&client->dev, "mt9m111: driver needs platform data\n");
1066 return -EINVAL;
1067 }
1068
1069 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
1070 dev_warn(&adapter->dev,
1071 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
1072 return -EIO;
1073 }
1074
1075 mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
1076 if (!mt9m111)
1077 return -ENOMEM;
1078
1079 v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
1080
1081 /* Second stage probe - when a capture adapter is there */
1082 icd->ops = &mt9m111_ops;
1083
1084 mt9m111->rect.left = MT9M111_MIN_DARK_COLS;
1085 mt9m111->rect.top = MT9M111_MIN_DARK_ROWS;
1086 mt9m111->rect.width = MT9M111_MAX_WIDTH;
1087 mt9m111->rect.height = MT9M111_MAX_HEIGHT;
1088 mt9m111->fmt = &mt9m111_colour_fmts[0];
1089
1090 ret = mt9m111_video_probe(icd, client);
1091 if (ret) {
1092 icd->ops = NULL;
1093 kfree(mt9m111);
1094 }
1095
1096 return ret;
1097 }
1098
1099 static int mt9m111_remove(struct i2c_client *client)
1100 {
1101 struct mt9m111 *mt9m111 = to_mt9m111(client);
1102 struct soc_camera_device *icd = client->dev.platform_data;
1103
1104 icd->ops = NULL;
1105 kfree(mt9m111);
1106
1107 return 0;
1108 }
1109
1110 static const struct i2c_device_id mt9m111_id[] = {
1111 { "mt9m111", 0 },
1112 { }
1113 };
1114 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1115
1116 static struct i2c_driver mt9m111_i2c_driver = {
1117 .driver = {
1118 .name = "mt9m111",
1119 },
1120 .probe = mt9m111_probe,
1121 .remove = mt9m111_remove,
1122 .id_table = mt9m111_id,
1123 };
1124
1125 static int __init mt9m111_mod_init(void)
1126 {
1127 return i2c_add_driver(&mt9m111_i2c_driver);
1128 }
1129
1130 static void __exit mt9m111_mod_exit(void)
1131 {
1132 i2c_del_driver(&mt9m111_i2c_driver);
1133 }
1134
1135 module_init(mt9m111_mod_init);
1136 module_exit(mt9m111_mod_exit);
1137
1138 MODULE_DESCRIPTION("Micron/Aptina MT9M111/MT9M112/MT9M131 Camera driver");
1139 MODULE_AUTHOR("Robert Jarzmik");
1140 MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)