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>
16 #include <linux/v4l2-mediabus.h>
17 #include <linux/module.h>
19 #include <media/soc_camera.h>
20 #include <media/v4l2-common.h>
21 #include <media/v4l2-ctrls.h>
22 #include <media/v4l2-chip-ident.h>
25 * MT9M111, MT9M112 and MT9M131:
26 * i2c address is 0x48 or 0x5d (depending on SADDR pin)
27 * The platform has to define i2c_board_info and call i2c_register_board_info()
31 * Sensor core register addresses (0x000..0x0ff)
33 #define MT9M111_CHIP_VERSION 0x000
34 #define MT9M111_ROW_START 0x001
35 #define MT9M111_COLUMN_START 0x002
36 #define MT9M111_WINDOW_HEIGHT 0x003
37 #define MT9M111_WINDOW_WIDTH 0x004
38 #define MT9M111_HORIZONTAL_BLANKING_B 0x005
39 #define MT9M111_VERTICAL_BLANKING_B 0x006
40 #define MT9M111_HORIZONTAL_BLANKING_A 0x007
41 #define MT9M111_VERTICAL_BLANKING_A 0x008
42 #define MT9M111_SHUTTER_WIDTH 0x009
43 #define MT9M111_ROW_SPEED 0x00a
44 #define MT9M111_EXTRA_DELAY 0x00b
45 #define MT9M111_SHUTTER_DELAY 0x00c
46 #define MT9M111_RESET 0x00d
47 #define MT9M111_READ_MODE_B 0x020
48 #define MT9M111_READ_MODE_A 0x021
49 #define MT9M111_FLASH_CONTROL 0x023
50 #define MT9M111_GREEN1_GAIN 0x02b
51 #define MT9M111_BLUE_GAIN 0x02c
52 #define MT9M111_RED_GAIN 0x02d
53 #define MT9M111_GREEN2_GAIN 0x02e
54 #define MT9M111_GLOBAL_GAIN 0x02f
55 #define MT9M111_CONTEXT_CONTROL 0x0c8
56 #define MT9M111_PAGE_MAP 0x0f0
57 #define MT9M111_BYTE_WISE_ADDR 0x0f1
59 #define MT9M111_RESET_SYNC_CHANGES (1 << 15)
60 #define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
61 #define MT9M111_RESET_SHOW_BAD_FRAMES (1 << 8)
62 #define MT9M111_RESET_RESET_SOC (1 << 5)
63 #define MT9M111_RESET_OUTPUT_DISABLE (1 << 4)
64 #define MT9M111_RESET_CHIP_ENABLE (1 << 3)
65 #define MT9M111_RESET_ANALOG_STANDBY (1 << 2)
66 #define MT9M111_RESET_RESTART_FRAME (1 << 1)
67 #define MT9M111_RESET_RESET_MODE (1 << 0)
69 #define MT9M111_RM_FULL_POWER_RD (0 << 10)
70 #define MT9M111_RM_LOW_POWER_RD (1 << 10)
71 #define MT9M111_RM_COL_SKIP_4X (1 << 5)
72 #define MT9M111_RM_ROW_SKIP_4X (1 << 4)
73 #define MT9M111_RM_COL_SKIP_2X (1 << 3)
74 #define MT9M111_RM_ROW_SKIP_2X (1 << 2)
75 #define MT9M111_RMB_MIRROR_COLS (1 << 1)
76 #define MT9M111_RMB_MIRROR_ROWS (1 << 0)
77 #define MT9M111_CTXT_CTRL_RESTART (1 << 15)
78 #define MT9M111_CTXT_CTRL_DEFECTCOR_B (1 << 12)
79 #define MT9M111_CTXT_CTRL_RESIZE_B (1 << 10)
80 #define MT9M111_CTXT_CTRL_CTRL2_B (1 << 9)
81 #define MT9M111_CTXT_CTRL_GAMMA_B (1 << 8)
82 #define MT9M111_CTXT_CTRL_XENON_EN (1 << 7)
83 #define MT9M111_CTXT_CTRL_READ_MODE_B (1 << 3)
84 #define MT9M111_CTXT_CTRL_LED_FLASH_EN (1 << 2)
85 #define MT9M111_CTXT_CTRL_VBLANK_SEL_B (1 << 1)
86 #define MT9M111_CTXT_CTRL_HBLANK_SEL_B (1 << 0)
89 * Colorpipe register addresses (0x100..0x1ff)
91 #define MT9M111_OPER_MODE_CTRL 0x106
92 #define MT9M111_OUTPUT_FORMAT_CTRL 0x108
93 #define MT9M111_REDUCER_XZOOM_B 0x1a0
94 #define MT9M111_REDUCER_XSIZE_B 0x1a1
95 #define MT9M111_REDUCER_YZOOM_B 0x1a3
96 #define MT9M111_REDUCER_YSIZE_B 0x1a4
97 #define MT9M111_REDUCER_XZOOM_A 0x1a6
98 #define MT9M111_REDUCER_XSIZE_A 0x1a7
99 #define MT9M111_REDUCER_YZOOM_A 0x1a9
100 #define MT9M111_REDUCER_YSIZE_A 0x1aa
102 #define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a
103 #define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
105 #define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
106 #define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1)
107 #define MT9M111_OUTFMT_FLIP_BAYER_COL (1 << 9)
108 #define MT9M111_OUTFMT_FLIP_BAYER_ROW (1 << 8)
109 #define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14)
110 #define MT9M111_OUTFMT_BYPASS_IFP (1 << 10)
111 #define MT9M111_OUTFMT_INV_PIX_CLOCK (1 << 9)
112 #define MT9M111_OUTFMT_RGB (1 << 8)
113 #define MT9M111_OUTFMT_RGB565 (0 << 6)
114 #define MT9M111_OUTFMT_RGB555 (1 << 6)
115 #define MT9M111_OUTFMT_RGB444x (2 << 6)
116 #define MT9M111_OUTFMT_RGBx444 (3 << 6)
117 #define MT9M111_OUTFMT_TST_RAMP_OFF (0 << 4)
118 #define MT9M111_OUTFMT_TST_RAMP_COL (1 << 4)
119 #define MT9M111_OUTFMT_TST_RAMP_ROW (2 << 4)
120 #define MT9M111_OUTFMT_TST_RAMP_FRAME (3 << 4)
121 #define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3)
122 #define MT9M111_OUTFMT_AVG_CHROMA (1 << 2)
123 #define MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN (1 << 1)
124 #define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B (1 << 0)
127 * Camera control register addresses (0x200..0x2ff not implemented)
130 #define reg_read(reg) mt9m111_reg_read(client, MT9M111_##reg)
131 #define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val))
132 #define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val))
133 #define reg_clear(reg, val) mt9m111_reg_clear(client, MT9M111_##reg, (val))
134 #define reg_mask(reg, val, mask) mt9m111_reg_mask(client, MT9M111_##reg, \
137 #define MT9M111_MIN_DARK_ROWS 8
138 #define MT9M111_MIN_DARK_COLS 26
139 #define MT9M111_MAX_HEIGHT 1024
140 #define MT9M111_MAX_WIDTH 1280
142 struct mt9m111_context {
150 u16 output_fmt_ctrl2;
154 static struct mt9m111_context context_a = {
155 .read_mode = MT9M111_READ_MODE_A,
156 .blanking_h = MT9M111_HORIZONTAL_BLANKING_A,
157 .blanking_v = MT9M111_VERTICAL_BLANKING_A,
158 .reducer_xzoom = MT9M111_REDUCER_XZOOM_A,
159 .reducer_yzoom = MT9M111_REDUCER_YZOOM_A,
160 .reducer_xsize = MT9M111_REDUCER_XSIZE_A,
161 .reducer_ysize = MT9M111_REDUCER_YSIZE_A,
162 .output_fmt_ctrl2 = MT9M111_OUTPUT_FORMAT_CTRL2_A,
163 .control = MT9M111_CTXT_CTRL_RESTART,
166 static struct mt9m111_context context_b = {
167 .read_mode = MT9M111_READ_MODE_B,
168 .blanking_h = MT9M111_HORIZONTAL_BLANKING_B,
169 .blanking_v = MT9M111_VERTICAL_BLANKING_B,
170 .reducer_xzoom = MT9M111_REDUCER_XZOOM_B,
171 .reducer_yzoom = MT9M111_REDUCER_YZOOM_B,
172 .reducer_xsize = MT9M111_REDUCER_XSIZE_B,
173 .reducer_ysize = MT9M111_REDUCER_YSIZE_B,
174 .output_fmt_ctrl2 = MT9M111_OUTPUT_FORMAT_CTRL2_B,
175 .control = MT9M111_CTXT_CTRL_RESTART |
176 MT9M111_CTXT_CTRL_DEFECTCOR_B | MT9M111_CTXT_CTRL_RESIZE_B |
177 MT9M111_CTXT_CTRL_CTRL2_B | MT9M111_CTXT_CTRL_GAMMA_B |
178 MT9M111_CTXT_CTRL_READ_MODE_B | MT9M111_CTXT_CTRL_VBLANK_SEL_B |
179 MT9M111_CTXT_CTRL_HBLANK_SEL_B,
182 /* MT9M111 has only one fixed colorspace per pixelcode */
183 struct mt9m111_datafmt {
184 enum v4l2_mbus_pixelcode code;
185 enum v4l2_colorspace colorspace;
188 /* Find a data format by a pixel code in an array */
189 static const struct mt9m111_datafmt *mt9m111_find_datafmt(
190 enum v4l2_mbus_pixelcode code, const struct mt9m111_datafmt *fmt,
194 for (i = 0; i < n; i++)
195 if (fmt[i].code == code)
201 static const struct mt9m111_datafmt mt9m111_colour_fmts[] = {
202 {V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG},
203 {V4L2_MBUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG},
204 {V4L2_MBUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG},
205 {V4L2_MBUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_JPEG},
206 {V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
207 {V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB},
208 {V4L2_MBUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
209 {V4L2_MBUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB},
210 {V4L2_MBUS_FMT_BGR565_2X8_LE, V4L2_COLORSPACE_SRGB},
211 {V4L2_MBUS_FMT_BGR565_2X8_BE, V4L2_COLORSPACE_SRGB},
212 {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
213 {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
217 struct v4l2_subdev subdev;
218 struct v4l2_ctrl_handler hdl;
219 struct v4l2_ctrl *gain;
220 int model; /* V4L2_IDENT_MT9M111 or V4L2_IDENT_MT9M112 code
221 * from v4l2-chip-ident.h */
222 struct mt9m111_context *ctx;
223 struct v4l2_rect rect;
224 struct mutex power_lock; /* lock to protect power_count */
226 const struct mt9m111_datafmt *fmt;
227 int lastpage; /* PageMap cache value */
228 unsigned char datawidth;
231 static struct mt9m111 *to_mt9m111(const struct i2c_client *client)
233 return container_of(i2c_get_clientdata(client), struct mt9m111, subdev);
236 static int reg_page_map_set(struct i2c_client *client, const u16 reg)
240 struct mt9m111 *mt9m111 = to_mt9m111(client);
243 if (page == mt9m111->lastpage)
248 ret = i2c_smbus_write_word_swapped(client, MT9M111_PAGE_MAP, page);
250 mt9m111->lastpage = page;
254 static int mt9m111_reg_read(struct i2c_client *client, const u16 reg)
258 ret = reg_page_map_set(client, reg);
260 ret = i2c_smbus_read_word_swapped(client, reg & 0xff);
262 dev_dbg(&client->dev, "read reg.%03x -> %04x\n", reg, ret);
266 static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
271 ret = reg_page_map_set(client, reg);
273 ret = i2c_smbus_write_word_swapped(client, reg & 0xff, data);
274 dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
278 static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
283 ret = mt9m111_reg_read(client, reg);
285 ret = mt9m111_reg_write(client, reg, ret | data);
289 static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
294 ret = mt9m111_reg_read(client, reg);
296 ret = mt9m111_reg_write(client, reg, ret & ~data);
300 static int mt9m111_reg_mask(struct i2c_client *client, const u16 reg,
301 const u16 data, const u16 mask)
305 ret = mt9m111_reg_read(client, reg);
307 ret = mt9m111_reg_write(client, reg, (ret & ~mask) | data);
311 static int mt9m111_set_context(struct mt9m111 *mt9m111,
312 struct mt9m111_context *ctx)
314 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
315 return reg_write(CONTEXT_CONTROL, ctx->control);
318 static int mt9m111_setup_rect_ctx(struct mt9m111 *mt9m111,
319 struct v4l2_rect *rect, struct mt9m111_context *ctx)
321 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
322 int ret = mt9m111_reg_write(client, ctx->reducer_xzoom, MT9M111_MAX_WIDTH);
324 ret = mt9m111_reg_write(client, ctx->reducer_yzoom, MT9M111_MAX_HEIGHT);
326 ret = mt9m111_reg_write(client, ctx->reducer_xsize, rect->width);
328 ret = mt9m111_reg_write(client, ctx->reducer_ysize, rect->height);
332 static int mt9m111_setup_rect(struct mt9m111 *mt9m111,
333 struct v4l2_rect *rect)
335 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
337 bool is_raw_format = mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
338 mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE;
340 ret = reg_write(COLUMN_START, rect->left);
342 ret = reg_write(ROW_START, rect->top);
346 ret = reg_write(WINDOW_WIDTH, rect->width);
348 ret = reg_write(WINDOW_HEIGHT, rect->height);
351 ret = mt9m111_setup_rect_ctx(mt9m111, rect, &context_b);
353 ret = mt9m111_setup_rect_ctx(mt9m111, rect, &context_a);
359 static int mt9m111_enable(struct mt9m111 *mt9m111)
361 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
362 return reg_write(RESET, MT9M111_RESET_CHIP_ENABLE);
365 static int mt9m111_reset(struct mt9m111 *mt9m111)
367 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
370 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
372 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
374 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
375 | MT9M111_RESET_RESET_SOC);
380 static int mt9m111_make_rect(struct mt9m111 *mt9m111,
381 struct v4l2_rect *rect)
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 */
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);
395 soc_camera_limit_side(&rect->top, &rect->height,
396 MT9M111_MIN_DARK_ROWS, 2, MT9M111_MAX_HEIGHT);
398 return mt9m111_setup_rect(mt9m111, rect);
401 static int mt9m111_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
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);
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);
411 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
414 ret = mt9m111_make_rect(mt9m111, &rect);
416 mt9m111->rect = rect;
420 static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
422 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
424 a->c = mt9m111->rect;
425 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
430 static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
432 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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;
446 static int mt9m111_g_fmt(struct v4l2_subdev *sd,
447 struct v4l2_mbus_framefmt *mf)
449 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
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;
460 static int mt9m111_set_pixfmt(struct mt9m111 *mt9m111,
461 enum v4l2_mbus_pixelcode code)
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;
473 case V4L2_MBUS_FMT_SBGGR8_1X8:
474 data_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
477 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
478 data_outfmt2 = MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB;
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;
484 case V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE:
485 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
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;
491 case V4L2_MBUS_FMT_RGB565_2X8_BE:
492 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
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;
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;
503 case V4L2_MBUS_FMT_UYVY8_2X8:
506 case V4L2_MBUS_FMT_VYUY8_2X8:
507 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
509 case V4L2_MBUS_FMT_YUYV8_2X8:
510 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
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;
517 dev_err(&client->dev, "Pixel format not handled: %x\n", code);
521 ret = mt9m111_reg_mask(client, context_a.output_fmt_ctrl2,
522 data_outfmt2, mask_outfmt2);
524 ret = mt9m111_reg_mask(client, context_b.output_fmt_ctrl2,
525 data_outfmt2, mask_outfmt2);
530 static int mt9m111_s_fmt(struct v4l2_subdev *sd,
531 struct v4l2_mbus_framefmt *mf)
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,
540 .height = mf->height,
544 fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
545 ARRAY_SIZE(mt9m111_colour_fmts));
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);
553 ret = mt9m111_make_rect(mt9m111, &rect);
555 ret = mt9m111_set_pixfmt(mt9m111, mf->code);
557 mt9m111->rect = rect;
559 mf->colorspace = fmt->colorspace;
565 static int mt9m111_try_fmt(struct v4l2_subdev *sd,
566 struct v4l2_mbus_framefmt *mf)
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;
573 fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
574 ARRAY_SIZE(mt9m111_colour_fmts));
577 mf->code = fmt->code;
581 * With Bayer format enforce even side lengths, but let the user play
582 * with the starting pixel
585 if (mf->height > MT9M111_MAX_HEIGHT)
586 mf->height = MT9M111_MAX_HEIGHT;
587 else if (mf->height < 2)
590 mf->height = ALIGN(mf->height, 2);
592 if (mf->width > MT9M111_MAX_WIDTH)
593 mf->width = MT9M111_MAX_WIDTH;
594 else if (mf->width < 2)
597 mf->width = ALIGN(mf->width, 2);
599 mf->colorspace = fmt->colorspace;
604 static int mt9m111_g_chip_ident(struct v4l2_subdev *sd,
605 struct v4l2_dbg_chip_ident *id)
607 struct i2c_client *client = v4l2_get_subdevdata(sd);
608 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
610 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
613 if (id->match.addr != client->addr)
616 id->ident = mt9m111->model;
622 #ifdef CONFIG_VIDEO_ADV_DEBUG
623 static int mt9m111_g_register(struct v4l2_subdev *sd,
624 struct v4l2_dbg_register *reg)
626 struct i2c_client *client = v4l2_get_subdevdata(sd);
629 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
631 if (reg->match.addr != client->addr)
634 val = mt9m111_reg_read(client, reg->reg);
638 if (reg->val > 0xffff)
644 static int mt9m111_s_register(struct v4l2_subdev *sd,
645 struct v4l2_dbg_register *reg)
647 struct i2c_client *client = v4l2_get_subdevdata(sd);
649 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
652 if (reg->match.addr != client->addr)
655 if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
662 static int mt9m111_set_flip(struct mt9m111 *mt9m111, int flip, int mask)
664 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
668 ret = mt9m111_reg_set(client, mt9m111->ctx->read_mode, mask);
670 ret = mt9m111_reg_clear(client, mt9m111->ctx->read_mode, mask);
675 static int mt9m111_get_global_gain(struct mt9m111 *mt9m111)
677 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
680 data = reg_read(GLOBAL_GAIN);
682 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
683 (1 << ((data >> 9) & 1));
687 static int mt9m111_set_global_gain(struct mt9m111 *mt9m111, int gain)
689 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
692 if (gain > 63 * 2 * 2)
695 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
696 val = (1 << 10) | (1 << 9) | (gain / 4);
697 else if ((gain >= 64) && (gain < 64 * 2))
698 val = (1 << 9) | (gain / 2);
702 return reg_write(GLOBAL_GAIN, val);
705 static int mt9m111_set_autoexposure(struct mt9m111 *mt9m111, int on)
707 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
710 return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
711 return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
714 static int mt9m111_set_autowhitebalance(struct mt9m111 *mt9m111, int on)
716 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
719 return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
720 return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
723 static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl)
725 struct mt9m111 *mt9m111 = container_of(ctrl->handler,
726 struct mt9m111, hdl);
730 return mt9m111_set_flip(mt9m111, ctrl->val,
731 MT9M111_RMB_MIRROR_ROWS);
733 return mt9m111_set_flip(mt9m111, ctrl->val,
734 MT9M111_RMB_MIRROR_COLS);
736 return mt9m111_set_global_gain(mt9m111, ctrl->val);
737 case V4L2_CID_EXPOSURE_AUTO:
738 return mt9m111_set_autoexposure(mt9m111, ctrl->val);
739 case V4L2_CID_AUTO_WHITE_BALANCE:
740 return mt9m111_set_autowhitebalance(mt9m111, ctrl->val);
746 static int mt9m111_suspend(struct mt9m111 *mt9m111)
748 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
751 v4l2_ctrl_s_ctrl(mt9m111->gain, mt9m111_get_global_gain(mt9m111));
753 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
755 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC |
756 MT9M111_RESET_OUTPUT_DISABLE |
757 MT9M111_RESET_ANALOG_STANDBY);
759 ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
764 static void mt9m111_restore_state(struct mt9m111 *mt9m111)
766 mt9m111_set_context(mt9m111, mt9m111->ctx);
767 mt9m111_set_pixfmt(mt9m111, mt9m111->fmt->code);
768 mt9m111_setup_rect(mt9m111, &mt9m111->rect);
769 v4l2_ctrl_handler_setup(&mt9m111->hdl);
772 static int mt9m111_resume(struct mt9m111 *mt9m111)
774 int ret = mt9m111_enable(mt9m111);
776 ret = mt9m111_reset(mt9m111);
778 mt9m111_restore_state(mt9m111);
783 static int mt9m111_init(struct mt9m111 *mt9m111)
785 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
788 /* Default HIGHPOWER context */
789 mt9m111->ctx = &context_b;
790 ret = mt9m111_enable(mt9m111);
792 ret = mt9m111_reset(mt9m111);
794 ret = mt9m111_set_context(mt9m111, mt9m111->ctx);
796 dev_err(&client->dev, "mt9m111 init failed: %d\n", ret);
801 * Interface active, can use i2c. If it fails, it can indeed mean, that
802 * this wasn't our capture interface, so, we wait for the right one
804 static int mt9m111_video_probe(struct i2c_client *client)
806 struct mt9m111 *mt9m111 = to_mt9m111(client);
810 data = reg_read(CHIP_VERSION);
813 case 0x143a: /* MT9M111 or MT9M131 */
814 mt9m111->model = V4L2_IDENT_MT9M111;
815 dev_info(&client->dev,
816 "Detected a MT9M111/MT9M131 chip ID %x\n", data);
818 case 0x148c: /* MT9M112 */
819 mt9m111->model = V4L2_IDENT_MT9M112;
820 dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data);
823 dev_err(&client->dev,
824 "No MT9M111/MT9M112/MT9M131 chip detected register read %x\n",
829 ret = mt9m111_init(mt9m111);
832 return v4l2_ctrl_handler_setup(&mt9m111->hdl);
835 static int mt9m111_s_power(struct v4l2_subdev *sd, int on)
837 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
838 struct i2c_client *client = v4l2_get_subdevdata(sd);
841 mutex_lock(&mt9m111->power_lock);
844 * If the power count is modified from 0 to != 0 or from != 0 to 0,
845 * update the power state.
847 if (mt9m111->power_count == !on) {
849 ret = mt9m111_resume(mt9m111);
851 dev_err(&client->dev,
852 "Failed to resume the sensor: %d\n", ret);
856 mt9m111_suspend(mt9m111);
860 /* Update the power count. */
861 mt9m111->power_count += on ? 1 : -1;
862 WARN_ON(mt9m111->power_count < 0);
865 mutex_unlock(&mt9m111->power_lock);
869 static const struct v4l2_ctrl_ops mt9m111_ctrl_ops = {
870 .s_ctrl = mt9m111_s_ctrl,
873 static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
874 .g_chip_ident = mt9m111_g_chip_ident,
875 .s_power = mt9m111_s_power,
876 #ifdef CONFIG_VIDEO_ADV_DEBUG
877 .g_register = mt9m111_g_register,
878 .s_register = mt9m111_s_register,
882 static int mt9m111_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
883 enum v4l2_mbus_pixelcode *code)
885 if (index >= ARRAY_SIZE(mt9m111_colour_fmts))
888 *code = mt9m111_colour_fmts[index].code;
892 static int mt9m111_g_mbus_config(struct v4l2_subdev *sd,
893 struct v4l2_mbus_config *cfg)
895 struct i2c_client *client = v4l2_get_subdevdata(sd);
896 struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
898 cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
899 V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH |
900 V4L2_MBUS_DATA_ACTIVE_HIGH;
901 cfg->type = V4L2_MBUS_PARALLEL;
902 cfg->flags = soc_camera_apply_board_flags(icl, cfg);
907 static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
908 .s_mbus_fmt = mt9m111_s_fmt,
909 .g_mbus_fmt = mt9m111_g_fmt,
910 .try_mbus_fmt = mt9m111_try_fmt,
911 .s_crop = mt9m111_s_crop,
912 .g_crop = mt9m111_g_crop,
913 .cropcap = mt9m111_cropcap,
914 .enum_mbus_fmt = mt9m111_enum_fmt,
915 .g_mbus_config = mt9m111_g_mbus_config,
918 static struct v4l2_subdev_ops mt9m111_subdev_ops = {
919 .core = &mt9m111_subdev_core_ops,
920 .video = &mt9m111_subdev_video_ops,
923 static int mt9m111_probe(struct i2c_client *client,
924 const struct i2c_device_id *did)
926 struct mt9m111 *mt9m111;
927 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
928 struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
932 dev_err(&client->dev, "mt9m111: driver needs platform data\n");
936 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
937 dev_warn(&adapter->dev,
938 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
942 mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
946 v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
947 v4l2_ctrl_handler_init(&mt9m111->hdl, 5);
948 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
949 V4L2_CID_VFLIP, 0, 1, 1, 0);
950 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
951 V4L2_CID_HFLIP, 0, 1, 1, 0);
952 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
953 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
954 mt9m111->gain = v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
955 V4L2_CID_GAIN, 0, 63 * 2 * 2, 1, 32);
956 v4l2_ctrl_new_std_menu(&mt9m111->hdl,
957 &mt9m111_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0,
959 mt9m111->subdev.ctrl_handler = &mt9m111->hdl;
960 if (mt9m111->hdl.error) {
961 int err = mt9m111->hdl.error;
967 /* Second stage probe - when a capture adapter is there */
968 mt9m111->rect.left = MT9M111_MIN_DARK_COLS;
969 mt9m111->rect.top = MT9M111_MIN_DARK_ROWS;
970 mt9m111->rect.width = MT9M111_MAX_WIDTH;
971 mt9m111->rect.height = MT9M111_MAX_HEIGHT;
972 mt9m111->fmt = &mt9m111_colour_fmts[0];
973 mt9m111->lastpage = -1;
974 mutex_init(&mt9m111->power_lock);
976 ret = mt9m111_video_probe(client);
978 v4l2_ctrl_handler_free(&mt9m111->hdl);
985 static int mt9m111_remove(struct i2c_client *client)
987 struct mt9m111 *mt9m111 = to_mt9m111(client);
989 v4l2_device_unregister_subdev(&mt9m111->subdev);
990 v4l2_ctrl_handler_free(&mt9m111->hdl);
996 static const struct i2c_device_id mt9m111_id[] = {
1000 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1002 static struct i2c_driver mt9m111_i2c_driver = {
1006 .probe = mt9m111_probe,
1007 .remove = mt9m111_remove,
1008 .id_table = mt9m111_id,
1011 static int __init mt9m111_mod_init(void)
1013 return i2c_add_driver(&mt9m111_i2c_driver);
1016 static void __exit mt9m111_mod_exit(void)
1018 i2c_del_driver(&mt9m111_i2c_driver);
1021 module_init(mt9m111_mod_init);
1022 module_exit(mt9m111_mod_exit);
1024 MODULE_DESCRIPTION("Micron/Aptina MT9M111/MT9M112/MT9M131 Camera driver");
1025 MODULE_AUTHOR("Robert Jarzmik");
1026 MODULE_LICENSE("GPL");