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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / drivers / media / video / mt9m111.c
bloba357aa889fc6c07357b91c86877f8094db7d8539
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_RM_FULL_POWER_RD (0 << 10)
67 #define MT9M111_RM_LOW_POWER_RD (1 << 10)
68 #define MT9M111_RM_COL_SKIP_4X (1 << 5)
69 #define MT9M111_RM_ROW_SKIP_4X (1 << 4)
70 #define MT9M111_RM_COL_SKIP_2X (1 << 3)
71 #define MT9M111_RM_ROW_SKIP_2X (1 << 2)
72 #define MT9M111_RMB_MIRROR_COLS (1 << 1)
73 #define MT9M111_RMB_MIRROR_ROWS (1 << 0)
74 #define MT9M111_CTXT_CTRL_RESTART (1 << 15)
75 #define MT9M111_CTXT_CTRL_DEFECTCOR_B (1 << 12)
76 #define MT9M111_CTXT_CTRL_RESIZE_B (1 << 10)
77 #define MT9M111_CTXT_CTRL_CTRL2_B (1 << 9)
78 #define MT9M111_CTXT_CTRL_GAMMA_B (1 << 8)
79 #define MT9M111_CTXT_CTRL_XENON_EN (1 << 7)
80 #define MT9M111_CTXT_CTRL_READ_MODE_B (1 << 3)
81 #define MT9M111_CTXT_CTRL_LED_FLASH_EN (1 << 2)
82 #define MT9M111_CTXT_CTRL_VBLANK_SEL_B (1 << 1)
83 #define MT9M111_CTXT_CTRL_HBLANK_SEL_B (1 << 0)
84
85 /*
86 * Colorpipe register addresses (0x100..0x1ff)
87 */
88 #define MT9M111_OPER_MODE_CTRL 0x106
89 #define MT9M111_OUTPUT_FORMAT_CTRL 0x108
90 #define MT9M111_REDUCER_XZOOM_B 0x1a0
91 #define MT9M111_REDUCER_XSIZE_B 0x1a1
92 #define MT9M111_REDUCER_YZOOM_B 0x1a3
93 #define MT9M111_REDUCER_YSIZE_B 0x1a4
94 #define MT9M111_REDUCER_XZOOM_A 0x1a6
95 #define MT9M111_REDUCER_XSIZE_A 0x1a7
96 #define MT9M111_REDUCER_YZOOM_A 0x1a9
97 #define MT9M111_REDUCER_YSIZE_A 0x1aa
98
99 #define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a
100 #define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
101
102 #define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
103 #define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1)
104 #define MT9M111_OUTFMT_FLIP_BAYER_COL (1 << 9)
105 #define MT9M111_OUTFMT_FLIP_BAYER_ROW (1 << 8)
106 #define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14)
107 #define MT9M111_OUTFMT_BYPASS_IFP (1 << 10)
108 #define MT9M111_OUTFMT_INV_PIX_CLOCK (1 << 9)
109 #define MT9M111_OUTFMT_RGB (1 << 8)
110 #define MT9M111_OUTFMT_RGB565 (0 << 6)
111 #define MT9M111_OUTFMT_RGB555 (1 << 6)
112 #define MT9M111_OUTFMT_RGB444x (2 << 6)
113 #define MT9M111_OUTFMT_RGBx444 (3 << 6)
114 #define MT9M111_OUTFMT_TST_RAMP_OFF (0 << 4)
115 #define MT9M111_OUTFMT_TST_RAMP_COL (1 << 4)
116 #define MT9M111_OUTFMT_TST_RAMP_ROW (2 << 4)
117 #define MT9M111_OUTFMT_TST_RAMP_FRAME (3 << 4)
118 #define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3)
119 #define MT9M111_OUTFMT_AVG_CHROMA (1 << 2)
120 #define MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN (1 << 1)
121 #define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B (1 << 0)
122
123 /*
124 * Camera control register addresses (0x200..0x2ff not implemented)
125 */
126
127 #define reg_read(reg) mt9m111_reg_read(client, MT9M111_##reg)
128 #define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val))
129 #define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val))
130 #define reg_clear(reg, val) mt9m111_reg_clear(client, MT9M111_##reg, (val))
131 #define reg_mask(reg, val, mask) mt9m111_reg_mask(client, MT9M111_##reg, \
132 (val), (mask))
133
134 #define MT9M111_MIN_DARK_ROWS 8
135 #define MT9M111_MIN_DARK_COLS 26
136 #define MT9M111_MAX_HEIGHT 1024
137 #define MT9M111_MAX_WIDTH 1280
138
139 /* MT9M111 has only one fixed colorspace per pixelcode */
140 struct mt9m111_datafmt {
141 enum v4l2_mbus_pixelcode code;
142 enum v4l2_colorspace colorspace;
143 };
144
145 /* Find a data format by a pixel code in an array */
146 static const struct mt9m111_datafmt *mt9m111_find_datafmt(
147 enum v4l2_mbus_pixelcode code, const struct mt9m111_datafmt *fmt,
148 int n)
149 {
150 int i;
151 for (i = 0; i < n; i++)
152 if (fmt[i].code == code)
153 return fmt + i;
154
155 return NULL;
156 }
157
158 static const struct mt9m111_datafmt mt9m111_colour_fmts[] = {
159 {V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG},
160 {V4L2_MBUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG},
161 {V4L2_MBUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG},
162 {V4L2_MBUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_JPEG},
163 {V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
164 {V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB},
165 {V4L2_MBUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
166 {V4L2_MBUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB},
167 {V4L2_MBUS_FMT_BGR565_2X8_LE, V4L2_COLORSPACE_SRGB},
168 {V4L2_MBUS_FMT_BGR565_2X8_BE, V4L2_COLORSPACE_SRGB},
169 {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
170 {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
171 };
172
173 enum mt9m111_context {
174 HIGHPOWER = 0,
175 LOWPOWER,
176 };
177
178 struct mt9m111 {
179 struct v4l2_subdev subdev;
180 int model; /* V4L2_IDENT_MT9M111 or V4L2_IDENT_MT9M112 code
181 * from v4l2-chip-ident.h */
182 enum mt9m111_context context;
183 struct v4l2_rect rect;
184 struct mutex power_lock; /* lock to protect power_count */
185 int power_count;
186 const struct mt9m111_datafmt *fmt;
187 unsigned int gain;
188 unsigned char autoexposure;
189 unsigned char datawidth;
190 unsigned int powered:1;
191 unsigned int hflip:1;
192 unsigned int vflip:1;
193 unsigned int autowhitebalance:1;
194 };
195
196 static struct mt9m111 *to_mt9m111(const struct i2c_client *client)
197 {
198 return container_of(i2c_get_clientdata(client), struct mt9m111, subdev);
199 }
200
201 static int reg_page_map_set(struct i2c_client *client, const u16 reg)
202 {
203 int ret;
204 u16 page;
205 static int lastpage = -1; /* PageMap cache value */
206
207 page = (reg >> 8);
208 if (page == lastpage)
209 return 0;
210 if (page > 2)
211 return -EINVAL;
212
213 ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
214 if (!ret)
215 lastpage = page;
216 return ret;
217 }
218
219 static int mt9m111_reg_read(struct i2c_client *client, const u16 reg)
220 {
221 int ret;
222
223 ret = reg_page_map_set(client, reg);
224 if (!ret)
225 ret = swab16(i2c_smbus_read_word_data(client, reg & 0xff));
226
227 dev_dbg(&client->dev, "read reg.%03x -> %04x\n", reg, ret);
228 return ret;
229 }
230
231 static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
232 const u16 data)
233 {
234 int ret;
235
236 ret = reg_page_map_set(client, reg);
237 if (!ret)
238 ret = i2c_smbus_write_word_data(client, reg & 0xff,
239 swab16(data));
240 dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
241 return ret;
242 }
243
244 static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
245 const u16 data)
246 {
247 int ret;
248
249 ret = mt9m111_reg_read(client, reg);
250 if (ret >= 0)
251 ret = mt9m111_reg_write(client, reg, ret | data);
252 return ret;
253 }
254
255 static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
256 const u16 data)
257 {
258 int ret;
259
260 ret = mt9m111_reg_read(client, reg);
261 if (ret >= 0)
262 ret = mt9m111_reg_write(client, reg, ret & ~data);
263 return ret;
264 }
265
266 static int mt9m111_reg_mask(struct i2c_client *client, const u16 reg,
267 const u16 data, const u16 mask)
268 {
269 int ret;
270
271 ret = mt9m111_reg_read(client, reg);
272 if (ret >= 0)
273 ret = mt9m111_reg_write(client, reg, (ret & ~mask) | data);
274 return ret;
275 }
276
277 static int mt9m111_set_context(struct mt9m111 *mt9m111,
278 enum mt9m111_context ctxt)
279 {
280 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
281 int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
282 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
283 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
284 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
285 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
286 int valA = MT9M111_CTXT_CTRL_RESTART;
287
288 if (ctxt == HIGHPOWER)
289 return reg_write(CONTEXT_CONTROL, valB);
290 else
291 return reg_write(CONTEXT_CONTROL, valA);
292 }
293
294 static int mt9m111_setup_rect(struct mt9m111 *mt9m111,
295 struct v4l2_rect *rect)
296 {
297 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
298 int ret, is_raw_format;
299 int width = rect->width;
300 int height = rect->height;
301
302 if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
303 mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE)
304 is_raw_format = 1;
305 else
306 is_raw_format = 0;
307
308 ret = reg_write(COLUMN_START, rect->left);
309 if (!ret)
310 ret = reg_write(ROW_START, rect->top);
311
312 if (is_raw_format) {
313 if (!ret)
314 ret = reg_write(WINDOW_WIDTH, width);
315 if (!ret)
316 ret = reg_write(WINDOW_HEIGHT, height);
317 } else {
318 if (!ret)
319 ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
320 if (!ret)
321 ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
322 if (!ret)
323 ret = reg_write(REDUCER_XSIZE_B, width);
324 if (!ret)
325 ret = reg_write(REDUCER_YSIZE_B, height);
326 if (!ret)
327 ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
328 if (!ret)
329 ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
330 if (!ret)
331 ret = reg_write(REDUCER_XSIZE_A, width);
332 if (!ret)
333 ret = reg_write(REDUCER_YSIZE_A, height);
334 }
335
336 return ret;
337 }
338
339 static int mt9m111_enable(struct mt9m111 *mt9m111)
340 {
341 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
342 int ret;
343
344 ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
345 if (!ret)
346 mt9m111->powered = 1;
347 return ret;
348 }
349
350 static int mt9m111_reset(struct mt9m111 *mt9m111)
351 {
352 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
353 int ret;
354
355 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
356 if (!ret)
357 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
358 if (!ret)
359 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
360 | MT9M111_RESET_RESET_SOC);
361
362 return ret;
363 }
364
365 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
366 {
367 struct soc_camera_link *icl = to_soc_camera_link(icd);
368 unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
369 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
370 SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
371
372 return soc_camera_apply_sensor_flags(icl, flags);
373 }
374
375 static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
376 {
377 return 0;
378 }
379
380 static int mt9m111_make_rect(struct mt9m111 *mt9m111,
381 struct v4l2_rect *rect)
382 {
383 if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
384 mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) {
385 /* Bayer format - even size lengths */
386 rect->width = ALIGN(rect->width, 2);
387 rect->height = ALIGN(rect->height, 2);
388 /* Let the user play with the starting pixel */
389 }
390
391 /* FIXME: the datasheet doesn't specify minimum sizes */
392 soc_camera_limit_side(&rect->left, &rect->width,
393 MT9M111_MIN_DARK_COLS, 2, MT9M111_MAX_WIDTH);
394
395 soc_camera_limit_side(&rect->top, &rect->height,
396 MT9M111_MIN_DARK_ROWS, 2, MT9M111_MAX_HEIGHT);
397
398 return mt9m111_setup_rect(mt9m111, rect);
399 }
400
401 static int mt9m111_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
402 {
403 struct v4l2_rect rect = a->c;
404 struct i2c_client *client = v4l2_get_subdevdata(sd);
405 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
406 int ret;
407
408 dev_dbg(&client->dev, "%s left=%d, top=%d, width=%d, height=%d\n",
409 __func__, rect.left, rect.top, rect.width, rect.height);
410
411 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
412 return -EINVAL;
413
414 ret = mt9m111_make_rect(mt9m111, &rect);
415 if (!ret)
416 mt9m111->rect = rect;
417 return ret;
418 }
419
420 static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
421 {
422 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
423
424 a->c = mt9m111->rect;
425 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
426
427 return 0;
428 }
429
430 static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
431 {
432 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
433 return -EINVAL;
434
435 a->bounds.left = MT9M111_MIN_DARK_COLS;
436 a->bounds.top = MT9M111_MIN_DARK_ROWS;
437 a->bounds.width = MT9M111_MAX_WIDTH;
438 a->bounds.height = MT9M111_MAX_HEIGHT;
439 a->defrect = a->bounds;
440 a->pixelaspect.numerator = 1;
441 a->pixelaspect.denominator = 1;
442
443 return 0;
444 }
445
446 static int mt9m111_g_fmt(struct v4l2_subdev *sd,
447 struct v4l2_mbus_framefmt *mf)
448 {
449 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
450
451 mf->width = mt9m111->rect.width;
452 mf->height = mt9m111->rect.height;
453 mf->code = mt9m111->fmt->code;
454 mf->colorspace = mt9m111->fmt->colorspace;
455 mf->field = V4L2_FIELD_NONE;
456
457 return 0;
458 }
459
460 static int mt9m111_set_pixfmt(struct mt9m111 *mt9m111,
461 enum v4l2_mbus_pixelcode code)
462 {
463 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
464 u16 data_outfmt2, mask_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
465 MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB |
466 MT9M111_OUTFMT_RGB565 | MT9M111_OUTFMT_RGB555 |
467 MT9M111_OUTFMT_RGB444x | MT9M111_OUTFMT_RGBx444 |
468 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
469 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
470 int ret;
471
472 switch (code) {
473 case V4L2_MBUS_FMT_SBGGR8_1X8:
474 data_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
475 MT9M111_OUTFMT_RGB;
476 break;
477 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
478 data_outfmt2 = MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB;
479 break;
480 case V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE:
481 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555 |
482 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
483 break;
484 case V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE:
485 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
486 break;
487 case V4L2_MBUS_FMT_RGB565_2X8_LE:
488 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
489 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
490 break;
491 case V4L2_MBUS_FMT_RGB565_2X8_BE:
492 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
493 break;
494 case V4L2_MBUS_FMT_BGR565_2X8_BE:
495 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
496 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
497 break;
498 case V4L2_MBUS_FMT_BGR565_2X8_LE:
499 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
500 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
501 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
502 break;
503 case V4L2_MBUS_FMT_UYVY8_2X8:
504 data_outfmt2 = 0;
505 break;
506 case V4L2_MBUS_FMT_VYUY8_2X8:
507 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
508 break;
509 case V4L2_MBUS_FMT_YUYV8_2X8:
510 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
511 break;
512 case V4L2_MBUS_FMT_YVYU8_2X8:
513 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
514 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
515 break;
516 default:
517 dev_err(&client->dev, "Pixel format not handled: %x\n", code);
518 return -EINVAL;
519 }
520
521 ret = reg_mask(OUTPUT_FORMAT_CTRL2_A, data_outfmt2,
522 mask_outfmt2);
523 if (!ret)
524 ret = reg_mask(OUTPUT_FORMAT_CTRL2_B, data_outfmt2,
525 mask_outfmt2);
526
527 return ret;
528 }
529
530 static int mt9m111_s_fmt(struct v4l2_subdev *sd,
531 struct v4l2_mbus_framefmt *mf)
532 {
533 struct i2c_client *client = v4l2_get_subdevdata(sd);
534 const struct mt9m111_datafmt *fmt;
535 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
536 struct v4l2_rect rect = {
537 .left = mt9m111->rect.left,
538 .top = mt9m111->rect.top,
539 .width = mf->width,
540 .height = mf->height,
541 };
542 int ret;
543
544 fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
545 ARRAY_SIZE(mt9m111_colour_fmts));
546 if (!fmt)
547 return -EINVAL;
548
549 dev_dbg(&client->dev,
550 "%s code=%x left=%d, top=%d, width=%d, height=%d\n", __func__,
551 mf->code, rect.left, rect.top, rect.width, rect.height);
552
553 ret = mt9m111_make_rect(mt9m111, &rect);
554 if (!ret)
555 ret = mt9m111_set_pixfmt(mt9m111, mf->code);
556 if (!ret) {
557 mt9m111->rect = rect;
558 mt9m111->fmt = fmt;
559 mf->colorspace = fmt->colorspace;
560 }
561
562 return ret;
563 }
564
565 static int mt9m111_try_fmt(struct v4l2_subdev *sd,
566 struct v4l2_mbus_framefmt *mf)
567 {
568 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
569 const struct mt9m111_datafmt *fmt;
570 bool bayer = mf->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
571 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE;
572
573 fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
574 ARRAY_SIZE(mt9m111_colour_fmts));
575 if (!fmt) {
576 fmt = mt9m111->fmt;
577 mf->code = fmt->code;
578 }
579
580 /*
581 * With Bayer format enforce even side lengths, but let the user play
582 * with the starting pixel
583 */
584
585 if (mf->height > MT9M111_MAX_HEIGHT)
586 mf->height = MT9M111_MAX_HEIGHT;
587 else if (mf->height < 2)
588 mf->height = 2;
589 else if (bayer)
590 mf->height = ALIGN(mf->height, 2);
591
592 if (mf->width > MT9M111_MAX_WIDTH)
593 mf->width = MT9M111_MAX_WIDTH;
594 else if (mf->width < 2)
595 mf->width = 2;
596 else if (bayer)
597 mf->width = ALIGN(mf->width, 2);
598
599 mf->colorspace = fmt->colorspace;
600
601 return 0;
602 }
603
604 static int mt9m111_g_chip_ident(struct v4l2_subdev *sd,
605 struct v4l2_dbg_chip_ident *id)
606 {
607 struct i2c_client *client = v4l2_get_subdevdata(sd);
608 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
609
610 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
611 return -EINVAL;
612
613 if (id->match.addr != client->addr)
614 return -ENODEV;
615
616 id->ident = mt9m111->model;
617 id->revision = 0;
618
619 return 0;
620 }
621
622 #ifdef CONFIG_VIDEO_ADV_DEBUG
623 static int mt9m111_g_register(struct v4l2_subdev *sd,
624 struct v4l2_dbg_register *reg)
625 {
626 struct i2c_client *client = v4l2_get_subdevdata(sd);
627 int val;
628
629 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
630 return -EINVAL;
631 if (reg->match.addr != client->addr)
632 return -ENODEV;
633
634 val = mt9m111_reg_read(client, reg->reg);
635 reg->size = 2;
636 reg->val = (u64)val;
637
638 if (reg->val > 0xffff)
639 return -EIO;
640
641 return 0;
642 }
643
644 static int mt9m111_s_register(struct v4l2_subdev *sd,
645 struct v4l2_dbg_register *reg)
646 {
647 struct i2c_client *client = v4l2_get_subdevdata(sd);
648
649 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
650 return -EINVAL;
651
652 if (reg->match.addr != client->addr)
653 return -ENODEV;
654
655 if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
656 return -EIO;
657
658 return 0;
659 }
660 #endif
661
662 static const struct v4l2_queryctrl mt9m111_controls[] = {
663 {
664 .id = V4L2_CID_VFLIP,
665 .type = V4L2_CTRL_TYPE_BOOLEAN,
666 .name = "Flip Verticaly",
667 .minimum = 0,
668 .maximum = 1,
669 .step = 1,
670 .default_value = 0,
671 }, {
672 .id = V4L2_CID_HFLIP,
673 .type = V4L2_CTRL_TYPE_BOOLEAN,
674 .name = "Flip Horizontaly",
675 .minimum = 0,
676 .maximum = 1,
677 .step = 1,
678 .default_value = 0,
679 }, { /* gain = 1/32*val (=>gain=1 if val==32) */
680 .id = V4L2_CID_GAIN,
681 .type = V4L2_CTRL_TYPE_INTEGER,
682 .name = "Gain",
683 .minimum = 0,
684 .maximum = 63 * 2 * 2,
685 .step = 1,
686 .default_value = 32,
687 .flags = V4L2_CTRL_FLAG_SLIDER,
688 }, {
689 .id = V4L2_CID_EXPOSURE_AUTO,
690 .type = V4L2_CTRL_TYPE_BOOLEAN,
691 .name = "Auto Exposure",
692 .minimum = 0,
693 .maximum = 1,
694 .step = 1,
695 .default_value = 1,
696 }
697 };
698
699 static struct soc_camera_ops mt9m111_ops = {
700 .query_bus_param = mt9m111_query_bus_param,
701 .set_bus_param = mt9m111_set_bus_param,
702 .controls = mt9m111_controls,
703 .num_controls = ARRAY_SIZE(mt9m111_controls),
704 };
705
706 static int mt9m111_set_flip(struct mt9m111 *mt9m111, int flip, int mask)
707 {
708 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
709 int ret;
710
711 if (mt9m111->context == HIGHPOWER) {
712 if (flip)
713 ret = reg_set(READ_MODE_B, mask);
714 else
715 ret = reg_clear(READ_MODE_B, mask);
716 } else {
717 if (flip)
718 ret = reg_set(READ_MODE_A, mask);
719 else
720 ret = reg_clear(READ_MODE_A, mask);
721 }
722
723 return ret;
724 }
725
726 static int mt9m111_get_global_gain(struct mt9m111 *mt9m111)
727 {
728 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
729 int data;
730
731 data = reg_read(GLOBAL_GAIN);
732 if (data >= 0)
733 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
734 (1 << ((data >> 9) & 1));
735 return data;
736 }
737
738 static int mt9m111_set_global_gain(struct mt9m111 *mt9m111, int gain)
739 {
740 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
741 u16 val;
742
743 if (gain > 63 * 2 * 2)
744 return -EINVAL;
745
746 mt9m111->gain = gain;
747 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
748 val = (1 << 10) | (1 << 9) | (gain / 4);
749 else if ((gain >= 64) && (gain < 64 * 2))
750 val = (1 << 9) | (gain / 2);
751 else
752 val = gain;
753
754 return reg_write(GLOBAL_GAIN, val);
755 }
756
757 static int mt9m111_set_autoexposure(struct mt9m111 *mt9m111, int on)
758 {
759 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
760 int ret;
761
762 if (on)
763 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
764 else
765 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
766
767 if (!ret)
768 mt9m111->autoexposure = on;
769
770 return ret;
771 }
772
773 static int mt9m111_set_autowhitebalance(struct mt9m111 *mt9m111, int on)
774 {
775 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
776 int ret;
777
778 if (on)
779 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
780 else
781 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
782
783 if (!ret)
784 mt9m111->autowhitebalance = on;
785
786 return ret;
787 }
788
789 static int mt9m111_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
790 {
791 struct i2c_client *client = v4l2_get_subdevdata(sd);
792 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
793 int data;
794
795 switch (ctrl->id) {
796 case V4L2_CID_VFLIP:
797 if (mt9m111->context == HIGHPOWER)
798 data = reg_read(READ_MODE_B);
799 else
800 data = reg_read(READ_MODE_A);
801
802 if (data < 0)
803 return -EIO;
804 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
805 break;
806 case V4L2_CID_HFLIP:
807 if (mt9m111->context == HIGHPOWER)
808 data = reg_read(READ_MODE_B);
809 else
810 data = reg_read(READ_MODE_A);
811
812 if (data < 0)
813 return -EIO;
814 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
815 break;
816 case V4L2_CID_GAIN:
817 data = mt9m111_get_global_gain(mt9m111);
818 if (data < 0)
819 return data;
820 ctrl->value = data;
821 break;
822 case V4L2_CID_EXPOSURE_AUTO:
823 ctrl->value = mt9m111->autoexposure;
824 break;
825 case V4L2_CID_AUTO_WHITE_BALANCE:
826 ctrl->value = mt9m111->autowhitebalance;
827 break;
828 }
829 return 0;
830 }
831
832 static int mt9m111_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
833 {
834 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
835 const struct v4l2_queryctrl *qctrl;
836 int ret;
837
838 qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
839 if (!qctrl)
840 return -EINVAL;
841
842 switch (ctrl->id) {
843 case V4L2_CID_VFLIP:
844 mt9m111->vflip = ctrl->value;
845 ret = mt9m111_set_flip(mt9m111, ctrl->value,
846 MT9M111_RMB_MIRROR_ROWS);
847 break;
848 case V4L2_CID_HFLIP:
849 mt9m111->hflip = ctrl->value;
850 ret = mt9m111_set_flip(mt9m111, ctrl->value,
851 MT9M111_RMB_MIRROR_COLS);
852 break;
853 case V4L2_CID_GAIN:
854 ret = mt9m111_set_global_gain(mt9m111, ctrl->value);
855 break;
856 case V4L2_CID_EXPOSURE_AUTO:
857 ret = mt9m111_set_autoexposure(mt9m111, ctrl->value);
858 break;
859 case V4L2_CID_AUTO_WHITE_BALANCE:
860 ret = mt9m111_set_autowhitebalance(mt9m111, ctrl->value);
861 break;
862 default:
863 ret = -EINVAL;
864 }
865
866 return ret;
867 }
868
869 static int mt9m111_suspend(struct mt9m111 *mt9m111)
870 {
871 mt9m111->gain = mt9m111_get_global_gain(mt9m111);
872
873 return 0;
874 }
875
876 static void mt9m111_restore_state(struct mt9m111 *mt9m111)
877 {
878 mt9m111_set_context(mt9m111, mt9m111->context);
879 mt9m111_set_pixfmt(mt9m111, mt9m111->fmt->code);
880 mt9m111_setup_rect(mt9m111, &mt9m111->rect);
881 mt9m111_set_flip(mt9m111, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
882 mt9m111_set_flip(mt9m111, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
883 mt9m111_set_global_gain(mt9m111, mt9m111->gain);
884 mt9m111_set_autoexposure(mt9m111, mt9m111->autoexposure);
885 mt9m111_set_autowhitebalance(mt9m111, mt9m111->autowhitebalance);
886 }
887
888 static int mt9m111_resume(struct mt9m111 *mt9m111)
889 {
890 int ret = 0;
891
892 if (mt9m111->powered) {
893 ret = mt9m111_enable(mt9m111);
894 if (!ret)
895 ret = mt9m111_reset(mt9m111);
896 if (!ret)
897 mt9m111_restore_state(mt9m111);
898 }
899 return ret;
900 }
901
902 static int mt9m111_init(struct mt9m111 *mt9m111)
903 {
904 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
905 int ret;
906
907 mt9m111->context = HIGHPOWER;
908 ret = mt9m111_enable(mt9m111);
909 if (!ret)
910 ret = mt9m111_reset(mt9m111);
911 if (!ret)
912 ret = mt9m111_set_context(mt9m111, mt9m111->context);
913 if (!ret)
914 ret = mt9m111_set_autoexposure(mt9m111, mt9m111->autoexposure);
915 if (ret)
916 dev_err(&client->dev, "mt9m111 init failed: %d\n", ret);
917 return ret;
918 }
919
920 /*
921 * Interface active, can use i2c. If it fails, it can indeed mean, that
922 * this wasn't our capture interface, so, we wait for the right one
923 */
924 static int mt9m111_video_probe(struct soc_camera_device *icd,
925 struct i2c_client *client)
926 {
927 struct mt9m111 *mt9m111 = to_mt9m111(client);
928 s32 data;
929 int ret;
930
931 /* We must have a parent by now. And it cannot be a wrong one. */
932 BUG_ON(!icd->parent ||
933 to_soc_camera_host(icd->parent)->nr != icd->iface);
934
935 mt9m111->autoexposure = 1;
936 mt9m111->autowhitebalance = 1;
937
938 data = reg_read(CHIP_VERSION);
939
940 switch (data) {
941 case 0x143a: /* MT9M111 or MT9M131 */
942 mt9m111->model = V4L2_IDENT_MT9M111;
943 dev_info(&client->dev,
944 "Detected a MT9M111/MT9M131 chip ID %x\n", data);
945 break;
946 case 0x148c: /* MT9M112 */
947 mt9m111->model = V4L2_IDENT_MT9M112;
948 dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data);
949 break;
950 default:
951 ret = -ENODEV;
952 dev_err(&client->dev,
953 "No MT9M111/MT9M112/MT9M131 chip detected register read %x\n",
954 data);
955 goto ei2c;
956 }
957
958 ret = mt9m111_init(mt9m111);
959
960 ei2c:
961 return ret;
962 }
963
964 static int mt9m111_s_power(struct v4l2_subdev *sd, int on)
965 {
966 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
967 struct i2c_client *client = v4l2_get_subdevdata(sd);
968 int ret = 0;
969
970 mutex_lock(&mt9m111->power_lock);
971
972 /*
973 * If the power count is modified from 0 to != 0 or from != 0 to 0,
974 * update the power state.
975 */
976 if (mt9m111->power_count == !on) {
977 if (on) {
978 ret = mt9m111_resume(mt9m111);
979 if (ret) {
980 dev_err(&client->dev,
981 "Failed to resume the sensor: %d\n", ret);
982 goto out;
983 }
984 } else {
985 mt9m111_suspend(mt9m111);
986 }
987 }
988
989 /* Update the power count. */
990 mt9m111->power_count += on ? 1 : -1;
991 WARN_ON(mt9m111->power_count < 0);
992
993 out:
994 mutex_unlock(&mt9m111->power_lock);
995 return ret;
996 }
997
998 static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
999 .g_ctrl = mt9m111_g_ctrl,
1000 .s_ctrl = mt9m111_s_ctrl,
1001 .g_chip_ident = mt9m111_g_chip_ident,
1002 .s_power = mt9m111_s_power,
1003 #ifdef CONFIG_VIDEO_ADV_DEBUG
1004 .g_register = mt9m111_g_register,
1005 .s_register = mt9m111_s_register,
1006 #endif
1007 };
1008
1009 static int mt9m111_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
1010 enum v4l2_mbus_pixelcode *code)
1011 {
1012 if (index >= ARRAY_SIZE(mt9m111_colour_fmts))
1013 return -EINVAL;
1014
1015 *code = mt9m111_colour_fmts[index].code;
1016 return 0;
1017 }
1018
1019 static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
1020 .s_mbus_fmt = mt9m111_s_fmt,
1021 .g_mbus_fmt = mt9m111_g_fmt,
1022 .try_mbus_fmt = mt9m111_try_fmt,
1023 .s_crop = mt9m111_s_crop,
1024 .g_crop = mt9m111_g_crop,
1025 .cropcap = mt9m111_cropcap,
1026 .enum_mbus_fmt = mt9m111_enum_fmt,
1027 };
1028
1029 static struct v4l2_subdev_ops mt9m111_subdev_ops = {
1030 .core = &mt9m111_subdev_core_ops,
1031 .video = &mt9m111_subdev_video_ops,
1032 };
1033
1034 static int mt9m111_probe(struct i2c_client *client,
1035 const struct i2c_device_id *did)
1036 {
1037 struct mt9m111 *mt9m111;
1038 struct soc_camera_device *icd = client->dev.platform_data;
1039 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
1040 struct soc_camera_link *icl;
1041 int ret;
1042
1043 if (!icd) {
1044 dev_err(&client->dev, "mt9m111: soc-camera data missing!\n");
1045 return -EINVAL;
1046 }
1047
1048 icl = to_soc_camera_link(icd);
1049 if (!icl) {
1050 dev_err(&client->dev, "mt9m111: driver needs platform data\n");
1051 return -EINVAL;
1052 }
1053
1054 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
1055 dev_warn(&adapter->dev,
1056 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
1057 return -EIO;
1058 }
1059
1060 mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
1061 if (!mt9m111)
1062 return -ENOMEM;
1063
1064 v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
1065
1066 /* Second stage probe - when a capture adapter is there */
1067 icd->ops = &mt9m111_ops;
1068
1069 mt9m111->rect.left = MT9M111_MIN_DARK_COLS;
1070 mt9m111->rect.top = MT9M111_MIN_DARK_ROWS;
1071 mt9m111->rect.width = MT9M111_MAX_WIDTH;
1072 mt9m111->rect.height = MT9M111_MAX_HEIGHT;
1073 mt9m111->fmt = &mt9m111_colour_fmts[0];
1074
1075 ret = mt9m111_video_probe(icd, client);
1076 if (ret) {
1077 icd->ops = NULL;
1078 kfree(mt9m111);
1079 }
1080
1081 return ret;
1082 }
1083
1084 static int mt9m111_remove(struct i2c_client *client)
1085 {
1086 struct mt9m111 *mt9m111 = to_mt9m111(client);
1087 struct soc_camera_device *icd = client->dev.platform_data;
1088
1089 icd->ops = NULL;
1090 kfree(mt9m111);
1091
1092 return 0;
1093 }
1094
1095 static const struct i2c_device_id mt9m111_id[] = {
1096 { "mt9m111", 0 },
1097 { }
1098 };
1099 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1100
1101 static struct i2c_driver mt9m111_i2c_driver = {
1102 .driver = {
1103 .name = "mt9m111",
1104 },
1105 .probe = mt9m111_probe,
1106 .remove = mt9m111_remove,
1107 .id_table = mt9m111_id,
1108 };
1109
1110 static int __init mt9m111_mod_init(void)
1111 {
1112 return i2c_add_driver(&mt9m111_i2c_driver);
1113 }
1114
1115 static void __exit mt9m111_mod_exit(void)
1116 {
1117 i2c_del_driver(&mt9m111_i2c_driver);
1118 }
1119
1120 module_init(mt9m111_mod_init);
1121 module_exit(mt9m111_mod_exit);
1122
1123 MODULE_DESCRIPTION("Micron/Aptina MT9M111/MT9M112/MT9M131 Camera driver");
1124 MODULE_AUTHOR("Robert Jarzmik");
1125 MODULE_LICENSE("GPL");
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