2 * Driver for MT9M111/MT9M112/MT9M131 CMOS Image Sensor from Micron/Aptina
4 * Copyright (C) 2008, Robert Jarzmik <robert.jarzmik@free.fr>
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.
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>
17 #include <media/v4l2-common.h>
18 #include <media/v4l2-chip-ident.h>
19 #include <media/soc_camera.h>
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()
28 * Sensor core register addresses (0x000..0x0ff)
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
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)
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)
80 * Colorpipe register addresses (0x100..0x1ff)
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
93 #define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a
94 #define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
96 #define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
97 #define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1)
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)
118 * Camera control register addresses (0x200..0x2ff not implemented)
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))
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
131 /* MT9M111 has only one fixed colorspace per pixelcode */
132 struct mt9m111_datafmt {
133 enum v4l2_mbus_pixelcode code;
134 enum v4l2_colorspace colorspace;
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,
143 for (i = 0; i < n; i++)
144 if (fmt[i].code == code)
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},
161 enum mt9m111_context {
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 struct mutex power_lock; /* lock to protect power_count */
174 const struct mt9m111_datafmt *fmt;
176 unsigned char autoexposure;
177 unsigned char datawidth;
178 unsigned int powered:1;
179 unsigned int hflip:1;
180 unsigned int vflip:1;
181 unsigned int swap_rgb_even_odd:1;
182 unsigned int swap_rgb_red_blue:1;
183 unsigned int swap_yuv_y_chromas:1;
184 unsigned int swap_yuv_cb_cr:1;
185 unsigned int autowhitebalance:1;
188 static struct mt9m111 *to_mt9m111(const struct i2c_client *client)
190 return container_of(i2c_get_clientdata(client), struct mt9m111, subdev);
193 static int reg_page_map_set(struct i2c_client *client, const u16 reg)
197 static int lastpage = -1; /* PageMap cache value */
200 if (page == lastpage)
205 ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
211 static int mt9m111_reg_read(struct i2c_client *client, const u16 reg)
215 ret = reg_page_map_set(client, reg);
217 ret = swab16(i2c_smbus_read_word_data(client, reg & 0xff));
219 dev_dbg(&client->dev, "read reg.%03x -> %04x\n", reg, ret);
223 static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
228 ret = reg_page_map_set(client, reg);
230 ret = i2c_smbus_write_word_data(client, reg & 0xff,
232 dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
236 static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
241 ret = mt9m111_reg_read(client, reg);
243 ret = mt9m111_reg_write(client, reg, ret | data);
247 static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
252 ret = mt9m111_reg_read(client, reg);
253 return mt9m111_reg_write(client, reg, ret & ~data);
256 static int mt9m111_set_context(struct mt9m111 *mt9m111,
257 enum mt9m111_context ctxt)
259 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
260 int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
261 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
262 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
263 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
264 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
265 int valA = MT9M111_CTXT_CTRL_RESTART;
267 if (ctxt == HIGHPOWER)
268 return reg_write(CONTEXT_CONTROL, valB);
270 return reg_write(CONTEXT_CONTROL, valA);
273 static int mt9m111_setup_rect(struct mt9m111 *mt9m111,
274 struct v4l2_rect *rect)
276 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
277 int ret, is_raw_format;
278 int width = rect->width;
279 int height = rect->height;
281 if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
282 mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE)
287 ret = reg_write(COLUMN_START, rect->left);
289 ret = reg_write(ROW_START, rect->top);
293 ret = reg_write(WINDOW_WIDTH, width);
295 ret = reg_write(WINDOW_HEIGHT, height);
298 ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
300 ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
302 ret = reg_write(REDUCER_XSIZE_B, width);
304 ret = reg_write(REDUCER_YSIZE_B, height);
306 ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
308 ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
310 ret = reg_write(REDUCER_XSIZE_A, width);
312 ret = reg_write(REDUCER_YSIZE_A, height);
318 static int mt9m111_setup_pixfmt(struct i2c_client *client, u16 outfmt)
321 u16 mask = MT9M111_OUTFMT_PROCESSED_BAYER | MT9M111_OUTFMT_RGB |
322 MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_SWAP_RGB_EVEN |
323 MT9M111_OUTFMT_RGB565 | MT9M111_OUTFMT_RGB555 |
324 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr |
325 MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
327 ret = reg_read(OUTPUT_FORMAT_CTRL2_A);
329 ret = reg_write(OUTPUT_FORMAT_CTRL2_A, (ret & ~mask) | outfmt);
331 ret = reg_read(OUTPUT_FORMAT_CTRL2_B);
333 ret = reg_write(OUTPUT_FORMAT_CTRL2_B, (ret & ~mask) | outfmt);
338 static int mt9m111_setfmt_bayer8(struct mt9m111 *mt9m111)
340 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
342 return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_PROCESSED_BAYER |
346 static int mt9m111_setfmt_bayer10(struct mt9m111 *mt9m111)
348 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
350 return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_BYPASS_IFP);
353 static int mt9m111_setfmt_rgb565(struct mt9m111 *mt9m111)
355 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
356 int val = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
358 if (mt9m111->swap_rgb_red_blue)
359 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
360 if (mt9m111->swap_rgb_even_odd)
361 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
363 return mt9m111_setup_pixfmt(client, val);
366 static int mt9m111_setfmt_rgb555(struct mt9m111 *mt9m111)
368 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
369 int val = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
371 if (mt9m111->swap_rgb_red_blue)
372 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
373 if (mt9m111->swap_rgb_even_odd)
374 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
376 return mt9m111_setup_pixfmt(client, val);
379 static int mt9m111_setfmt_yuv(struct mt9m111 *mt9m111)
381 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
384 if (mt9m111->swap_yuv_cb_cr)
385 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
386 if (mt9m111->swap_yuv_y_chromas)
387 val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
389 return mt9m111_setup_pixfmt(client, val);
392 static int mt9m111_enable(struct mt9m111 *mt9m111)
394 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
397 ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
399 mt9m111->powered = 1;
403 static int mt9m111_reset(struct mt9m111 *mt9m111)
405 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
408 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
410 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
412 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
413 | MT9M111_RESET_RESET_SOC);
418 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
420 struct soc_camera_link *icl = to_soc_camera_link(icd);
421 unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
422 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
423 SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
425 return soc_camera_apply_sensor_flags(icl, flags);
428 static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
433 static int mt9m111_make_rect(struct mt9m111 *mt9m111,
434 struct v4l2_rect *rect)
436 if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
437 mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) {
438 /* Bayer format - even size lengths */
439 rect->width = ALIGN(rect->width, 2);
440 rect->height = ALIGN(rect->height, 2);
441 /* Let the user play with the starting pixel */
444 /* FIXME: the datasheet doesn't specify minimum sizes */
445 soc_camera_limit_side(&rect->left, &rect->width,
446 MT9M111_MIN_DARK_COLS, 2, MT9M111_MAX_WIDTH);
448 soc_camera_limit_side(&rect->top, &rect->height,
449 MT9M111_MIN_DARK_ROWS, 2, MT9M111_MAX_HEIGHT);
451 return mt9m111_setup_rect(mt9m111, rect);
454 static int mt9m111_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
456 struct v4l2_rect rect = a->c;
457 struct i2c_client *client = v4l2_get_subdevdata(sd);
458 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
461 dev_dbg(&client->dev, "%s left=%d, top=%d, width=%d, height=%d\n",
462 __func__, rect.left, rect.top, rect.width, rect.height);
464 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
467 ret = mt9m111_make_rect(mt9m111, &rect);
469 mt9m111->rect = rect;
473 static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
475 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
477 a->c = mt9m111->rect;
478 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
483 static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
485 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
488 a->bounds.left = MT9M111_MIN_DARK_COLS;
489 a->bounds.top = MT9M111_MIN_DARK_ROWS;
490 a->bounds.width = MT9M111_MAX_WIDTH;
491 a->bounds.height = MT9M111_MAX_HEIGHT;
492 a->defrect = a->bounds;
493 a->pixelaspect.numerator = 1;
494 a->pixelaspect.denominator = 1;
499 static int mt9m111_g_fmt(struct v4l2_subdev *sd,
500 struct v4l2_mbus_framefmt *mf)
502 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
504 mf->width = mt9m111->rect.width;
505 mf->height = mt9m111->rect.height;
506 mf->code = mt9m111->fmt->code;
507 mf->colorspace = mt9m111->fmt->colorspace;
508 mf->field = V4L2_FIELD_NONE;
513 static int mt9m111_set_pixfmt(struct mt9m111 *mt9m111,
514 enum v4l2_mbus_pixelcode code)
516 struct i2c_client *client;
520 case V4L2_MBUS_FMT_SBGGR8_1X8:
521 ret = mt9m111_setfmt_bayer8(mt9m111);
523 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
524 ret = mt9m111_setfmt_bayer10(mt9m111);
526 case V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE:
527 ret = mt9m111_setfmt_rgb555(mt9m111);
529 case V4L2_MBUS_FMT_RGB565_2X8_LE:
530 ret = mt9m111_setfmt_rgb565(mt9m111);
532 case V4L2_MBUS_FMT_UYVY8_2X8:
533 mt9m111->swap_yuv_y_chromas = 0;
534 mt9m111->swap_yuv_cb_cr = 0;
535 ret = mt9m111_setfmt_yuv(mt9m111);
537 case V4L2_MBUS_FMT_VYUY8_2X8:
538 mt9m111->swap_yuv_y_chromas = 0;
539 mt9m111->swap_yuv_cb_cr = 1;
540 ret = mt9m111_setfmt_yuv(mt9m111);
542 case V4L2_MBUS_FMT_YUYV8_2X8:
543 mt9m111->swap_yuv_y_chromas = 1;
544 mt9m111->swap_yuv_cb_cr = 0;
545 ret = mt9m111_setfmt_yuv(mt9m111);
547 case V4L2_MBUS_FMT_YVYU8_2X8:
548 mt9m111->swap_yuv_y_chromas = 1;
549 mt9m111->swap_yuv_cb_cr = 1;
550 ret = mt9m111_setfmt_yuv(mt9m111);
553 client = v4l2_get_subdevdata(&mt9m111->subdev);
554 dev_err(&client->dev, "Pixel format not handled : %x\n",
562 static int mt9m111_s_fmt(struct v4l2_subdev *sd,
563 struct v4l2_mbus_framefmt *mf)
565 struct i2c_client *client = v4l2_get_subdevdata(sd);
566 const struct mt9m111_datafmt *fmt;
567 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
568 struct v4l2_rect rect = {
569 .left = mt9m111->rect.left,
570 .top = mt9m111->rect.top,
572 .height = mf->height,
576 fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
577 ARRAY_SIZE(mt9m111_colour_fmts));
581 dev_dbg(&client->dev,
582 "%s code=%x left=%d, top=%d, width=%d, height=%d\n", __func__,
583 mf->code, rect.left, rect.top, rect.width, rect.height);
585 ret = mt9m111_make_rect(mt9m111, &rect);
587 ret = mt9m111_set_pixfmt(mt9m111, mf->code);
589 mt9m111->rect = rect;
591 mf->colorspace = fmt->colorspace;
597 static int mt9m111_try_fmt(struct v4l2_subdev *sd,
598 struct v4l2_mbus_framefmt *mf)
600 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
601 const struct mt9m111_datafmt *fmt;
602 bool bayer = mf->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
603 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE;
605 fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
606 ARRAY_SIZE(mt9m111_colour_fmts));
609 mf->code = fmt->code;
613 * With Bayer format enforce even side lengths, but let the user play
614 * with the starting pixel
617 if (mf->height > MT9M111_MAX_HEIGHT)
618 mf->height = MT9M111_MAX_HEIGHT;
619 else if (mf->height < 2)
622 mf->height = ALIGN(mf->height, 2);
624 if (mf->width > MT9M111_MAX_WIDTH)
625 mf->width = MT9M111_MAX_WIDTH;
626 else if (mf->width < 2)
629 mf->width = ALIGN(mf->width, 2);
631 mf->colorspace = fmt->colorspace;
636 static int mt9m111_g_chip_ident(struct v4l2_subdev *sd,
637 struct v4l2_dbg_chip_ident *id)
639 struct i2c_client *client = v4l2_get_subdevdata(sd);
640 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
642 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
645 if (id->match.addr != client->addr)
648 id->ident = mt9m111->model;
654 #ifdef CONFIG_VIDEO_ADV_DEBUG
655 static int mt9m111_g_register(struct v4l2_subdev *sd,
656 struct v4l2_dbg_register *reg)
658 struct i2c_client *client = v4l2_get_subdevdata(sd);
661 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
663 if (reg->match.addr != client->addr)
666 val = mt9m111_reg_read(client, reg->reg);
670 if (reg->val > 0xffff)
676 static int mt9m111_s_register(struct v4l2_subdev *sd,
677 struct v4l2_dbg_register *reg)
679 struct i2c_client *client = v4l2_get_subdevdata(sd);
681 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
684 if (reg->match.addr != client->addr)
687 if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
694 static const struct v4l2_queryctrl mt9m111_controls[] = {
696 .id = V4L2_CID_VFLIP,
697 .type = V4L2_CTRL_TYPE_BOOLEAN,
698 .name = "Flip Verticaly",
704 .id = V4L2_CID_HFLIP,
705 .type = V4L2_CTRL_TYPE_BOOLEAN,
706 .name = "Flip Horizontaly",
711 }, { /* gain = 1/32*val (=>gain=1 if val==32) */
713 .type = V4L2_CTRL_TYPE_INTEGER,
716 .maximum = 63 * 2 * 2,
719 .flags = V4L2_CTRL_FLAG_SLIDER,
721 .id = V4L2_CID_EXPOSURE_AUTO,
722 .type = V4L2_CTRL_TYPE_BOOLEAN,
723 .name = "Auto Exposure",
731 static struct soc_camera_ops mt9m111_ops = {
732 .query_bus_param = mt9m111_query_bus_param,
733 .set_bus_param = mt9m111_set_bus_param,
734 .controls = mt9m111_controls,
735 .num_controls = ARRAY_SIZE(mt9m111_controls),
738 static int mt9m111_set_flip(struct mt9m111 *mt9m111, int flip, int mask)
740 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
743 if (mt9m111->context == HIGHPOWER) {
745 ret = reg_set(READ_MODE_B, mask);
747 ret = reg_clear(READ_MODE_B, mask);
750 ret = reg_set(READ_MODE_A, mask);
752 ret = reg_clear(READ_MODE_A, mask);
758 static int mt9m111_get_global_gain(struct mt9m111 *mt9m111)
760 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
763 data = reg_read(GLOBAL_GAIN);
765 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
766 (1 << ((data >> 9) & 1));
770 static int mt9m111_set_global_gain(struct mt9m111 *mt9m111, int gain)
772 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
775 if (gain > 63 * 2 * 2)
778 mt9m111->gain = gain;
779 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
780 val = (1 << 10) | (1 << 9) | (gain / 4);
781 else if ((gain >= 64) && (gain < 64 * 2))
782 val = (1 << 9) | (gain / 2);
786 return reg_write(GLOBAL_GAIN, val);
789 static int mt9m111_set_autoexposure(struct mt9m111 *mt9m111, int on)
791 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
795 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
797 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
800 mt9m111->autoexposure = on;
805 static int mt9m111_set_autowhitebalance(struct mt9m111 *mt9m111, int on)
807 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
811 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
813 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
816 mt9m111->autowhitebalance = on;
821 static int mt9m111_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
823 struct i2c_client *client = v4l2_get_subdevdata(sd);
824 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
829 if (mt9m111->context == HIGHPOWER)
830 data = reg_read(READ_MODE_B);
832 data = reg_read(READ_MODE_A);
836 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
839 if (mt9m111->context == HIGHPOWER)
840 data = reg_read(READ_MODE_B);
842 data = reg_read(READ_MODE_A);
846 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
849 data = mt9m111_get_global_gain(mt9m111);
854 case V4L2_CID_EXPOSURE_AUTO:
855 ctrl->value = mt9m111->autoexposure;
857 case V4L2_CID_AUTO_WHITE_BALANCE:
858 ctrl->value = mt9m111->autowhitebalance;
864 static int mt9m111_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
866 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
867 const struct v4l2_queryctrl *qctrl;
870 qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
876 mt9m111->vflip = ctrl->value;
877 ret = mt9m111_set_flip(mt9m111, ctrl->value,
878 MT9M111_RMB_MIRROR_ROWS);
881 mt9m111->hflip = ctrl->value;
882 ret = mt9m111_set_flip(mt9m111, ctrl->value,
883 MT9M111_RMB_MIRROR_COLS);
886 ret = mt9m111_set_global_gain(mt9m111, ctrl->value);
888 case V4L2_CID_EXPOSURE_AUTO:
889 ret = mt9m111_set_autoexposure(mt9m111, ctrl->value);
891 case V4L2_CID_AUTO_WHITE_BALANCE:
892 ret = mt9m111_set_autowhitebalance(mt9m111, ctrl->value);
901 static int mt9m111_suspend(struct mt9m111 *mt9m111)
903 mt9m111->gain = mt9m111_get_global_gain(mt9m111);
908 static void mt9m111_restore_state(struct mt9m111 *mt9m111)
910 mt9m111_set_context(mt9m111, mt9m111->context);
911 mt9m111_set_pixfmt(mt9m111, mt9m111->fmt->code);
912 mt9m111_setup_rect(mt9m111, &mt9m111->rect);
913 mt9m111_set_flip(mt9m111, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
914 mt9m111_set_flip(mt9m111, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
915 mt9m111_set_global_gain(mt9m111, mt9m111->gain);
916 mt9m111_set_autoexposure(mt9m111, mt9m111->autoexposure);
917 mt9m111_set_autowhitebalance(mt9m111, mt9m111->autowhitebalance);
920 static int mt9m111_resume(struct mt9m111 *mt9m111)
924 if (mt9m111->powered) {
925 ret = mt9m111_enable(mt9m111);
927 ret = mt9m111_reset(mt9m111);
929 mt9m111_restore_state(mt9m111);
934 static int mt9m111_init(struct mt9m111 *mt9m111)
936 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
939 mt9m111->context = HIGHPOWER;
940 ret = mt9m111_enable(mt9m111);
942 ret = mt9m111_reset(mt9m111);
944 ret = mt9m111_set_context(mt9m111, mt9m111->context);
946 ret = mt9m111_set_autoexposure(mt9m111, mt9m111->autoexposure);
948 dev_err(&client->dev, "mt9m111 init failed: %d\n", ret);
953 * Interface active, can use i2c. If it fails, it can indeed mean, that
954 * this wasn't our capture interface, so, we wait for the right one
956 static int mt9m111_video_probe(struct soc_camera_device *icd,
957 struct i2c_client *client)
959 struct mt9m111 *mt9m111 = to_mt9m111(client);
963 /* We must have a parent by now. And it cannot be a wrong one. */
964 BUG_ON(!icd->parent ||
965 to_soc_camera_host(icd->parent)->nr != icd->iface);
967 mt9m111->autoexposure = 1;
968 mt9m111->autowhitebalance = 1;
970 mt9m111->swap_rgb_even_odd = 1;
971 mt9m111->swap_rgb_red_blue = 1;
973 data = reg_read(CHIP_VERSION);
976 case 0x143a: /* MT9M111 or MT9M131 */
977 mt9m111->model = V4L2_IDENT_MT9M111;
978 dev_info(&client->dev,
979 "Detected a MT9M111/MT9M131 chip ID %x\n", data);
981 case 0x148c: /* MT9M112 */
982 mt9m111->model = V4L2_IDENT_MT9M112;
983 dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data);
987 dev_err(&client->dev,
988 "No MT9M111/MT9M112/MT9M131 chip detected register read %x\n",
993 ret = mt9m111_init(mt9m111);
999 static int mt9m111_s_power(struct v4l2_subdev *sd, int on)
1001 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
1002 struct i2c_client *client = v4l2_get_subdevdata(sd);
1005 mutex_lock(&mt9m111->power_lock);
1008 * If the power count is modified from 0 to != 0 or from != 0 to 0,
1009 * update the power state.
1011 if (mt9m111->power_count == !on) {
1013 ret = mt9m111_resume(mt9m111);
1015 dev_err(&client->dev,
1016 "Failed to resume the sensor: %d\n", ret);
1020 mt9m111_suspend(mt9m111);
1024 /* Update the power count. */
1025 mt9m111->power_count += on ? 1 : -1;
1026 WARN_ON(mt9m111->power_count < 0);
1029 mutex_unlock(&mt9m111->power_lock);
1033 static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
1034 .g_ctrl = mt9m111_g_ctrl,
1035 .s_ctrl = mt9m111_s_ctrl,
1036 .g_chip_ident = mt9m111_g_chip_ident,
1037 .s_power = mt9m111_s_power,
1038 #ifdef CONFIG_VIDEO_ADV_DEBUG
1039 .g_register = mt9m111_g_register,
1040 .s_register = mt9m111_s_register,
1044 static int mt9m111_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
1045 enum v4l2_mbus_pixelcode *code)
1047 if (index >= ARRAY_SIZE(mt9m111_colour_fmts))
1050 *code = mt9m111_colour_fmts[index].code;
1054 static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
1055 .s_mbus_fmt = mt9m111_s_fmt,
1056 .g_mbus_fmt = mt9m111_g_fmt,
1057 .try_mbus_fmt = mt9m111_try_fmt,
1058 .s_crop = mt9m111_s_crop,
1059 .g_crop = mt9m111_g_crop,
1060 .cropcap = mt9m111_cropcap,
1061 .enum_mbus_fmt = mt9m111_enum_fmt,
1064 static struct v4l2_subdev_ops mt9m111_subdev_ops = {
1065 .core = &mt9m111_subdev_core_ops,
1066 .video = &mt9m111_subdev_video_ops,
1069 static int mt9m111_probe(struct i2c_client *client,
1070 const struct i2c_device_id *did)
1072 struct mt9m111 *mt9m111;
1073 struct soc_camera_device *icd = client->dev.platform_data;
1074 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
1075 struct soc_camera_link *icl;
1079 dev_err(&client->dev, "mt9m111: soc-camera data missing!\n");
1083 icl = to_soc_camera_link(icd);
1085 dev_err(&client->dev, "mt9m111: driver needs platform data\n");
1089 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
1090 dev_warn(&adapter->dev,
1091 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
1095 mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
1099 v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
1101 /* Second stage probe - when a capture adapter is there */
1102 icd->ops = &mt9m111_ops;
1104 mt9m111->rect.left = MT9M111_MIN_DARK_COLS;
1105 mt9m111->rect.top = MT9M111_MIN_DARK_ROWS;
1106 mt9m111->rect.width = MT9M111_MAX_WIDTH;
1107 mt9m111->rect.height = MT9M111_MAX_HEIGHT;
1108 mt9m111->fmt = &mt9m111_colour_fmts[0];
1110 ret = mt9m111_video_probe(icd, client);
1119 static int mt9m111_remove(struct i2c_client *client)
1121 struct mt9m111 *mt9m111 = to_mt9m111(client);
1122 struct soc_camera_device *icd = client->dev.platform_data;
1130 static const struct i2c_device_id mt9m111_id[] = {
1134 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1136 static struct i2c_driver mt9m111_i2c_driver = {
1140 .probe = mt9m111_probe,
1141 .remove = mt9m111_remove,
1142 .id_table = mt9m111_id,
1145 static int __init mt9m111_mod_init(void)
1147 return i2c_add_driver(&mt9m111_i2c_driver);
1150 static void __exit mt9m111_mod_exit(void)
1152 i2c_del_driver(&mt9m111_i2c_driver);
1155 module_init(mt9m111_mod_init);
1156 module_exit(mt9m111_mod_exit);
1158 MODULE_DESCRIPTION("Micron/Aptina MT9M111/MT9M112/MT9M131 Camera driver");
1159 MODULE_AUTHOR("Robert Jarzmik");
1160 MODULE_LICENSE("GPL");