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-clk.h>
21 #include <media/v4l2-common.h>
22 #include <media/v4l2-ctrls.h>
25 * MT9M111, MT9M112 and MT9M131:
26 * i2c address is 0x48 or 0x5d (depending on SADDR pin)
27 * The platform has to define struct i2c_board_info objects and link to them
28 * from struct soc_camera_host_desc
32 * Sensor core register addresses (0x000..0x0ff)
34 #define MT9M111_CHIP_VERSION 0x000
35 #define MT9M111_ROW_START 0x001
36 #define MT9M111_COLUMN_START 0x002
37 #define MT9M111_WINDOW_HEIGHT 0x003
38 #define MT9M111_WINDOW_WIDTH 0x004
39 #define MT9M111_HORIZONTAL_BLANKING_B 0x005
40 #define MT9M111_VERTICAL_BLANKING_B 0x006
41 #define MT9M111_HORIZONTAL_BLANKING_A 0x007
42 #define MT9M111_VERTICAL_BLANKING_A 0x008
43 #define MT9M111_SHUTTER_WIDTH 0x009
44 #define MT9M111_ROW_SPEED 0x00a
45 #define MT9M111_EXTRA_DELAY 0x00b
46 #define MT9M111_SHUTTER_DELAY 0x00c
47 #define MT9M111_RESET 0x00d
48 #define MT9M111_READ_MODE_B 0x020
49 #define MT9M111_READ_MODE_A 0x021
50 #define MT9M111_FLASH_CONTROL 0x023
51 #define MT9M111_GREEN1_GAIN 0x02b
52 #define MT9M111_BLUE_GAIN 0x02c
53 #define MT9M111_RED_GAIN 0x02d
54 #define MT9M111_GREEN2_GAIN 0x02e
55 #define MT9M111_GLOBAL_GAIN 0x02f
56 #define MT9M111_CONTEXT_CONTROL 0x0c8
57 #define MT9M111_PAGE_MAP 0x0f0
58 #define MT9M111_BYTE_WISE_ADDR 0x0f1
60 #define MT9M111_RESET_SYNC_CHANGES (1 << 15)
61 #define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
62 #define MT9M111_RESET_SHOW_BAD_FRAMES (1 << 8)
63 #define MT9M111_RESET_RESET_SOC (1 << 5)
64 #define MT9M111_RESET_OUTPUT_DISABLE (1 << 4)
65 #define MT9M111_RESET_CHIP_ENABLE (1 << 3)
66 #define MT9M111_RESET_ANALOG_STANDBY (1 << 2)
67 #define MT9M111_RESET_RESTART_FRAME (1 << 1)
68 #define MT9M111_RESET_RESET_MODE (1 << 0)
70 #define MT9M111_RM_FULL_POWER_RD (0 << 10)
71 #define MT9M111_RM_LOW_POWER_RD (1 << 10)
72 #define MT9M111_RM_COL_SKIP_4X (1 << 5)
73 #define MT9M111_RM_ROW_SKIP_4X (1 << 4)
74 #define MT9M111_RM_COL_SKIP_2X (1 << 3)
75 #define MT9M111_RM_ROW_SKIP_2X (1 << 2)
76 #define MT9M111_RMB_MIRROR_COLS (1 << 1)
77 #define MT9M111_RMB_MIRROR_ROWS (1 << 0)
78 #define MT9M111_CTXT_CTRL_RESTART (1 << 15)
79 #define MT9M111_CTXT_CTRL_DEFECTCOR_B (1 << 12)
80 #define MT9M111_CTXT_CTRL_RESIZE_B (1 << 10)
81 #define MT9M111_CTXT_CTRL_CTRL2_B (1 << 9)
82 #define MT9M111_CTXT_CTRL_GAMMA_B (1 << 8)
83 #define MT9M111_CTXT_CTRL_XENON_EN (1 << 7)
84 #define MT9M111_CTXT_CTRL_READ_MODE_B (1 << 3)
85 #define MT9M111_CTXT_CTRL_LED_FLASH_EN (1 << 2)
86 #define MT9M111_CTXT_CTRL_VBLANK_SEL_B (1 << 1)
87 #define MT9M111_CTXT_CTRL_HBLANK_SEL_B (1 << 0)
90 * Colorpipe register addresses (0x100..0x1ff)
92 #define MT9M111_OPER_MODE_CTRL 0x106
93 #define MT9M111_OUTPUT_FORMAT_CTRL 0x108
94 #define MT9M111_REDUCER_XZOOM_B 0x1a0
95 #define MT9M111_REDUCER_XSIZE_B 0x1a1
96 #define MT9M111_REDUCER_YZOOM_B 0x1a3
97 #define MT9M111_REDUCER_YSIZE_B 0x1a4
98 #define MT9M111_REDUCER_XZOOM_A 0x1a6
99 #define MT9M111_REDUCER_XSIZE_A 0x1a7
100 #define MT9M111_REDUCER_YZOOM_A 0x1a9
101 #define MT9M111_REDUCER_YSIZE_A 0x1aa
103 #define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a
104 #define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
106 #define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
107 #define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1)
108 #define MT9M111_OUTFMT_FLIP_BAYER_COL (1 << 9)
109 #define MT9M111_OUTFMT_FLIP_BAYER_ROW (1 << 8)
110 #define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14)
111 #define MT9M111_OUTFMT_BYPASS_IFP (1 << 10)
112 #define MT9M111_OUTFMT_INV_PIX_CLOCK (1 << 9)
113 #define MT9M111_OUTFMT_RGB (1 << 8)
114 #define MT9M111_OUTFMT_RGB565 (0 << 6)
115 #define MT9M111_OUTFMT_RGB555 (1 << 6)
116 #define MT9M111_OUTFMT_RGB444x (2 << 6)
117 #define MT9M111_OUTFMT_RGBx444 (3 << 6)
118 #define MT9M111_OUTFMT_TST_RAMP_OFF (0 << 4)
119 #define MT9M111_OUTFMT_TST_RAMP_COL (1 << 4)
120 #define MT9M111_OUTFMT_TST_RAMP_ROW (2 << 4)
121 #define MT9M111_OUTFMT_TST_RAMP_FRAME (3 << 4)
122 #define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3)
123 #define MT9M111_OUTFMT_AVG_CHROMA (1 << 2)
124 #define MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN (1 << 1)
125 #define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B (1 << 0)
128 * Camera control register addresses (0x200..0x2ff not implemented)
131 #define reg_read(reg) mt9m111_reg_read(client, MT9M111_##reg)
132 #define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val))
133 #define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val))
134 #define reg_clear(reg, val) mt9m111_reg_clear(client, MT9M111_##reg, (val))
135 #define reg_mask(reg, val, mask) mt9m111_reg_mask(client, MT9M111_##reg, \
138 #define MT9M111_MIN_DARK_ROWS 8
139 #define MT9M111_MIN_DARK_COLS 26
140 #define MT9M111_MAX_HEIGHT 1024
141 #define MT9M111_MAX_WIDTH 1280
143 struct mt9m111_context {
151 u16 output_fmt_ctrl2;
155 static struct mt9m111_context context_a = {
156 .read_mode = MT9M111_READ_MODE_A,
157 .blanking_h = MT9M111_HORIZONTAL_BLANKING_A,
158 .blanking_v = MT9M111_VERTICAL_BLANKING_A,
159 .reducer_xzoom = MT9M111_REDUCER_XZOOM_A,
160 .reducer_yzoom = MT9M111_REDUCER_YZOOM_A,
161 .reducer_xsize = MT9M111_REDUCER_XSIZE_A,
162 .reducer_ysize = MT9M111_REDUCER_YSIZE_A,
163 .output_fmt_ctrl2 = MT9M111_OUTPUT_FORMAT_CTRL2_A,
164 .control = MT9M111_CTXT_CTRL_RESTART,
167 static struct mt9m111_context context_b = {
168 .read_mode = MT9M111_READ_MODE_B,
169 .blanking_h = MT9M111_HORIZONTAL_BLANKING_B,
170 .blanking_v = MT9M111_VERTICAL_BLANKING_B,
171 .reducer_xzoom = MT9M111_REDUCER_XZOOM_B,
172 .reducer_yzoom = MT9M111_REDUCER_YZOOM_B,
173 .reducer_xsize = MT9M111_REDUCER_XSIZE_B,
174 .reducer_ysize = MT9M111_REDUCER_YSIZE_B,
175 .output_fmt_ctrl2 = MT9M111_OUTPUT_FORMAT_CTRL2_B,
176 .control = MT9M111_CTXT_CTRL_RESTART |
177 MT9M111_CTXT_CTRL_DEFECTCOR_B | MT9M111_CTXT_CTRL_RESIZE_B |
178 MT9M111_CTXT_CTRL_CTRL2_B | MT9M111_CTXT_CTRL_GAMMA_B |
179 MT9M111_CTXT_CTRL_READ_MODE_B | MT9M111_CTXT_CTRL_VBLANK_SEL_B |
180 MT9M111_CTXT_CTRL_HBLANK_SEL_B,
183 /* MT9M111 has only one fixed colorspace per pixelcode */
184 struct mt9m111_datafmt {
186 enum v4l2_colorspace colorspace;
189 static const struct mt9m111_datafmt mt9m111_colour_fmts[] = {
190 {MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG},
191 {MEDIA_BUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG},
192 {MEDIA_BUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG},
193 {MEDIA_BUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_JPEG},
194 {MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
195 {MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB},
196 {MEDIA_BUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
197 {MEDIA_BUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB},
198 {MEDIA_BUS_FMT_BGR565_2X8_LE, V4L2_COLORSPACE_SRGB},
199 {MEDIA_BUS_FMT_BGR565_2X8_BE, V4L2_COLORSPACE_SRGB},
200 {MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
201 {MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
205 struct v4l2_subdev subdev;
206 struct v4l2_ctrl_handler hdl;
207 struct v4l2_ctrl *gain;
208 struct mt9m111_context *ctx;
209 struct v4l2_rect rect; /* cropping rectangle */
210 struct v4l2_clk *clk;
211 unsigned int width; /* output */
212 unsigned int height; /* sizes */
213 struct mutex power_lock; /* lock to protect power_count */
215 const struct mt9m111_datafmt *fmt;
216 int lastpage; /* PageMap cache value */
219 /* Find a data format by a pixel code */
220 static const struct mt9m111_datafmt *mt9m111_find_datafmt(struct mt9m111 *mt9m111,
224 for (i = 0; i < ARRAY_SIZE(mt9m111_colour_fmts); i++)
225 if (mt9m111_colour_fmts[i].code == code)
226 return mt9m111_colour_fmts + i;
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 mt9m111_context *ctx, struct v4l2_rect *rect,
320 unsigned int width, unsigned int height)
322 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
323 int ret = mt9m111_reg_write(client, ctx->reducer_xzoom, rect->width);
325 ret = mt9m111_reg_write(client, ctx->reducer_yzoom, rect->height);
327 ret = mt9m111_reg_write(client, ctx->reducer_xsize, width);
329 ret = mt9m111_reg_write(client, ctx->reducer_ysize, height);
333 static int mt9m111_setup_geometry(struct mt9m111 *mt9m111, struct v4l2_rect *rect,
334 int width, int height, u32 code)
336 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
339 ret = reg_write(COLUMN_START, rect->left);
341 ret = reg_write(ROW_START, rect->top);
344 ret = reg_write(WINDOW_WIDTH, rect->width);
346 ret = reg_write(WINDOW_HEIGHT, rect->height);
348 if (code != MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE) {
349 /* IFP in use, down-scaling possible */
351 ret = mt9m111_setup_rect_ctx(mt9m111, &context_b,
352 rect, width, height);
354 ret = mt9m111_setup_rect_ctx(mt9m111, &context_a,
355 rect, width, height);
358 dev_dbg(&client->dev, "%s(%x): %ux%u@%u:%u -> %ux%u = %d\n",
359 __func__, code, rect->width, rect->height, rect->left, rect->top,
365 static int mt9m111_enable(struct mt9m111 *mt9m111)
367 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
368 return reg_write(RESET, MT9M111_RESET_CHIP_ENABLE);
371 static int mt9m111_reset(struct mt9m111 *mt9m111)
373 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
376 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
378 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
380 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
381 | MT9M111_RESET_RESET_SOC);
386 static int mt9m111_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a)
388 struct v4l2_rect rect = a->c;
389 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
393 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
396 if (mt9m111->fmt->code == MEDIA_BUS_FMT_SBGGR8_1X8 ||
397 mt9m111->fmt->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE) {
398 /* Bayer format - even size lengths */
399 rect.width = ALIGN(rect.width, 2);
400 rect.height = ALIGN(rect.height, 2);
401 /* Let the user play with the starting pixel */
404 /* FIXME: the datasheet doesn't specify minimum sizes */
405 soc_camera_limit_side(&rect.left, &rect.width,
406 MT9M111_MIN_DARK_COLS, 2, MT9M111_MAX_WIDTH);
408 soc_camera_limit_side(&rect.top, &rect.height,
409 MT9M111_MIN_DARK_ROWS, 2, MT9M111_MAX_HEIGHT);
411 width = min(mt9m111->width, rect.width);
412 height = min(mt9m111->height, rect.height);
414 ret = mt9m111_setup_geometry(mt9m111, &rect, width, height, mt9m111->fmt->code);
416 mt9m111->rect = rect;
417 mt9m111->width = width;
418 mt9m111->height = height;
424 static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
426 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
428 a->c = mt9m111->rect;
429 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
434 static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
436 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
439 a->bounds.left = MT9M111_MIN_DARK_COLS;
440 a->bounds.top = MT9M111_MIN_DARK_ROWS;
441 a->bounds.width = MT9M111_MAX_WIDTH;
442 a->bounds.height = MT9M111_MAX_HEIGHT;
443 a->defrect = a->bounds;
444 a->pixelaspect.numerator = 1;
445 a->pixelaspect.denominator = 1;
450 static int mt9m111_g_fmt(struct v4l2_subdev *sd,
451 struct v4l2_mbus_framefmt *mf)
453 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
455 mf->width = mt9m111->width;
456 mf->height = mt9m111->height;
457 mf->code = mt9m111->fmt->code;
458 mf->colorspace = mt9m111->fmt->colorspace;
459 mf->field = V4L2_FIELD_NONE;
464 static int mt9m111_set_pixfmt(struct mt9m111 *mt9m111,
467 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
468 u16 data_outfmt2, mask_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
469 MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB |
470 MT9M111_OUTFMT_RGB565 | MT9M111_OUTFMT_RGB555 |
471 MT9M111_OUTFMT_RGB444x | MT9M111_OUTFMT_RGBx444 |
472 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
473 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
477 case MEDIA_BUS_FMT_SBGGR8_1X8:
478 data_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
481 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE:
482 data_outfmt2 = MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB;
484 case MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE:
485 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555 |
486 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
488 case MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE:
489 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
491 case MEDIA_BUS_FMT_RGB565_2X8_LE:
492 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
493 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
495 case MEDIA_BUS_FMT_RGB565_2X8_BE:
496 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
498 case MEDIA_BUS_FMT_BGR565_2X8_BE:
499 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
500 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
502 case MEDIA_BUS_FMT_BGR565_2X8_LE:
503 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
504 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
505 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
507 case MEDIA_BUS_FMT_UYVY8_2X8:
510 case MEDIA_BUS_FMT_VYUY8_2X8:
511 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
513 case MEDIA_BUS_FMT_YUYV8_2X8:
514 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
516 case MEDIA_BUS_FMT_YVYU8_2X8:
517 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
518 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
521 dev_err(&client->dev, "Pixel format not handled: %x\n", code);
525 ret = mt9m111_reg_mask(client, context_a.output_fmt_ctrl2,
526 data_outfmt2, mask_outfmt2);
528 ret = mt9m111_reg_mask(client, context_b.output_fmt_ctrl2,
529 data_outfmt2, mask_outfmt2);
534 static int mt9m111_try_fmt(struct v4l2_subdev *sd,
535 struct v4l2_mbus_framefmt *mf)
537 struct i2c_client *client = v4l2_get_subdevdata(sd);
538 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
539 const struct mt9m111_datafmt *fmt;
540 struct v4l2_rect *rect = &mt9m111->rect;
543 fmt = mt9m111_find_datafmt(mt9m111, mf->code);
545 bayer = fmt->code == MEDIA_BUS_FMT_SBGGR8_1X8 ||
546 fmt->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE;
549 * With Bayer format enforce even side lengths, but let the user play
550 * with the starting pixel
553 rect->width = ALIGN(rect->width, 2);
554 rect->height = ALIGN(rect->height, 2);
557 if (fmt->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE) {
558 /* IFP bypass mode, no scaling */
559 mf->width = rect->width;
560 mf->height = rect->height;
563 if (mf->width > rect->width)
564 mf->width = rect->width;
565 if (mf->height > rect->height)
566 mf->height = rect->height;
569 dev_dbg(&client->dev, "%s(): %ux%u, code=%x\n", __func__,
570 mf->width, mf->height, fmt->code);
572 mf->code = fmt->code;
573 mf->colorspace = fmt->colorspace;
578 static int mt9m111_s_fmt(struct v4l2_subdev *sd,
579 struct v4l2_mbus_framefmt *mf)
581 const struct mt9m111_datafmt *fmt;
582 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
583 struct v4l2_rect *rect = &mt9m111->rect;
586 mt9m111_try_fmt(sd, mf);
587 fmt = mt9m111_find_datafmt(mt9m111, mf->code);
588 /* try_fmt() guarantees fmt != NULL && fmt->code == mf->code */
590 ret = mt9m111_setup_geometry(mt9m111, rect, mf->width, mf->height, mf->code);
592 ret = mt9m111_set_pixfmt(mt9m111, mf->code);
594 mt9m111->width = mf->width;
595 mt9m111->height = mf->height;
602 #ifdef CONFIG_VIDEO_ADV_DEBUG
603 static int mt9m111_g_register(struct v4l2_subdev *sd,
604 struct v4l2_dbg_register *reg)
606 struct i2c_client *client = v4l2_get_subdevdata(sd);
609 if (reg->reg > 0x2ff)
612 val = mt9m111_reg_read(client, reg->reg);
616 if (reg->val > 0xffff)
622 static int mt9m111_s_register(struct v4l2_subdev *sd,
623 const struct v4l2_dbg_register *reg)
625 struct i2c_client *client = v4l2_get_subdevdata(sd);
627 if (reg->reg > 0x2ff)
630 if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
637 static int mt9m111_set_flip(struct mt9m111 *mt9m111, int flip, int mask)
639 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
643 ret = mt9m111_reg_set(client, mt9m111->ctx->read_mode, mask);
645 ret = mt9m111_reg_clear(client, mt9m111->ctx->read_mode, mask);
650 static int mt9m111_get_global_gain(struct mt9m111 *mt9m111)
652 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
655 data = reg_read(GLOBAL_GAIN);
657 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
658 (1 << ((data >> 9) & 1));
662 static int mt9m111_set_global_gain(struct mt9m111 *mt9m111, int gain)
664 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
667 if (gain > 63 * 2 * 2)
670 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
671 val = (1 << 10) | (1 << 9) | (gain / 4);
672 else if ((gain >= 64) && (gain < 64 * 2))
673 val = (1 << 9) | (gain / 2);
677 return reg_write(GLOBAL_GAIN, val);
680 static int mt9m111_set_autoexposure(struct mt9m111 *mt9m111, int val)
682 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
684 if (val == V4L2_EXPOSURE_AUTO)
685 return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
686 return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
689 static int mt9m111_set_autowhitebalance(struct mt9m111 *mt9m111, int on)
691 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
694 return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
695 return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
698 static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl)
700 struct mt9m111 *mt9m111 = container_of(ctrl->handler,
701 struct mt9m111, hdl);
705 return mt9m111_set_flip(mt9m111, ctrl->val,
706 MT9M111_RMB_MIRROR_ROWS);
708 return mt9m111_set_flip(mt9m111, ctrl->val,
709 MT9M111_RMB_MIRROR_COLS);
711 return mt9m111_set_global_gain(mt9m111, ctrl->val);
712 case V4L2_CID_EXPOSURE_AUTO:
713 return mt9m111_set_autoexposure(mt9m111, ctrl->val);
714 case V4L2_CID_AUTO_WHITE_BALANCE:
715 return mt9m111_set_autowhitebalance(mt9m111, ctrl->val);
721 static int mt9m111_suspend(struct mt9m111 *mt9m111)
723 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
726 v4l2_ctrl_s_ctrl(mt9m111->gain, mt9m111_get_global_gain(mt9m111));
728 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
730 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC |
731 MT9M111_RESET_OUTPUT_DISABLE |
732 MT9M111_RESET_ANALOG_STANDBY);
734 ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
739 static void mt9m111_restore_state(struct mt9m111 *mt9m111)
741 mt9m111_set_context(mt9m111, mt9m111->ctx);
742 mt9m111_set_pixfmt(mt9m111, mt9m111->fmt->code);
743 mt9m111_setup_geometry(mt9m111, &mt9m111->rect,
744 mt9m111->width, mt9m111->height, mt9m111->fmt->code);
745 v4l2_ctrl_handler_setup(&mt9m111->hdl);
748 static int mt9m111_resume(struct mt9m111 *mt9m111)
750 int ret = mt9m111_enable(mt9m111);
752 ret = mt9m111_reset(mt9m111);
754 mt9m111_restore_state(mt9m111);
759 static int mt9m111_init(struct mt9m111 *mt9m111)
761 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
764 ret = mt9m111_enable(mt9m111);
766 ret = mt9m111_reset(mt9m111);
768 ret = mt9m111_set_context(mt9m111, mt9m111->ctx);
770 dev_err(&client->dev, "mt9m111 init failed: %d\n", ret);
774 static int mt9m111_power_on(struct mt9m111 *mt9m111)
776 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
777 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
780 ret = soc_camera_power_on(&client->dev, ssdd, mt9m111->clk);
784 ret = mt9m111_resume(mt9m111);
786 dev_err(&client->dev, "Failed to resume the sensor: %d\n", ret);
787 soc_camera_power_off(&client->dev, ssdd, mt9m111->clk);
793 static void mt9m111_power_off(struct mt9m111 *mt9m111)
795 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
796 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
798 mt9m111_suspend(mt9m111);
799 soc_camera_power_off(&client->dev, ssdd, mt9m111->clk);
802 static int mt9m111_s_power(struct v4l2_subdev *sd, int on)
804 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
807 mutex_lock(&mt9m111->power_lock);
810 * If the power count is modified from 0 to != 0 or from != 0 to 0,
811 * update the power state.
813 if (mt9m111->power_count == !on) {
815 ret = mt9m111_power_on(mt9m111);
817 mt9m111_power_off(mt9m111);
821 /* Update the power count. */
822 mt9m111->power_count += on ? 1 : -1;
823 WARN_ON(mt9m111->power_count < 0);
826 mutex_unlock(&mt9m111->power_lock);
830 static const struct v4l2_ctrl_ops mt9m111_ctrl_ops = {
831 .s_ctrl = mt9m111_s_ctrl,
834 static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
835 .s_power = mt9m111_s_power,
836 #ifdef CONFIG_VIDEO_ADV_DEBUG
837 .g_register = mt9m111_g_register,
838 .s_register = mt9m111_s_register,
842 static int mt9m111_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
845 if (index >= ARRAY_SIZE(mt9m111_colour_fmts))
848 *code = mt9m111_colour_fmts[index].code;
852 static int mt9m111_g_mbus_config(struct v4l2_subdev *sd,
853 struct v4l2_mbus_config *cfg)
855 struct i2c_client *client = v4l2_get_subdevdata(sd);
856 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
858 cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
859 V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH |
860 V4L2_MBUS_DATA_ACTIVE_HIGH;
861 cfg->type = V4L2_MBUS_PARALLEL;
862 cfg->flags = soc_camera_apply_board_flags(ssdd, cfg);
867 static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
868 .s_mbus_fmt = mt9m111_s_fmt,
869 .g_mbus_fmt = mt9m111_g_fmt,
870 .try_mbus_fmt = mt9m111_try_fmt,
871 .s_crop = mt9m111_s_crop,
872 .g_crop = mt9m111_g_crop,
873 .cropcap = mt9m111_cropcap,
874 .enum_mbus_fmt = mt9m111_enum_fmt,
875 .g_mbus_config = mt9m111_g_mbus_config,
878 static struct v4l2_subdev_ops mt9m111_subdev_ops = {
879 .core = &mt9m111_subdev_core_ops,
880 .video = &mt9m111_subdev_video_ops,
884 * Interface active, can use i2c. If it fails, it can indeed mean, that
885 * this wasn't our capture interface, so, we wait for the right one
887 static int mt9m111_video_probe(struct i2c_client *client)
889 struct mt9m111 *mt9m111 = to_mt9m111(client);
893 ret = mt9m111_s_power(&mt9m111->subdev, 1);
897 data = reg_read(CHIP_VERSION);
900 case 0x143a: /* MT9M111 or MT9M131 */
901 dev_info(&client->dev,
902 "Detected a MT9M111/MT9M131 chip ID %x\n", data);
904 case 0x148c: /* MT9M112 */
905 dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data);
908 dev_err(&client->dev,
909 "No MT9M111/MT9M112/MT9M131 chip detected register read %x\n",
915 ret = mt9m111_init(mt9m111);
919 ret = v4l2_ctrl_handler_setup(&mt9m111->hdl);
922 mt9m111_s_power(&mt9m111->subdev, 0);
926 static int mt9m111_probe(struct i2c_client *client,
927 const struct i2c_device_id *did)
929 struct mt9m111 *mt9m111;
930 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
931 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
934 if (client->dev.of_node) {
935 ssdd = devm_kzalloc(&client->dev, sizeof(*ssdd), GFP_KERNEL);
938 client->dev.platform_data = ssdd;
941 dev_err(&client->dev, "mt9m111: driver needs platform data\n");
945 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
946 dev_warn(&adapter->dev,
947 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
951 mt9m111 = devm_kzalloc(&client->dev, sizeof(struct mt9m111), GFP_KERNEL);
955 mt9m111->clk = v4l2_clk_get(&client->dev, "mclk");
956 if (IS_ERR(mt9m111->clk))
957 return -EPROBE_DEFER;
959 /* Default HIGHPOWER context */
960 mt9m111->ctx = &context_b;
962 v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
963 v4l2_ctrl_handler_init(&mt9m111->hdl, 5);
964 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
965 V4L2_CID_VFLIP, 0, 1, 1, 0);
966 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
967 V4L2_CID_HFLIP, 0, 1, 1, 0);
968 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
969 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
970 mt9m111->gain = v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
971 V4L2_CID_GAIN, 0, 63 * 2 * 2, 1, 32);
972 v4l2_ctrl_new_std_menu(&mt9m111->hdl,
973 &mt9m111_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0,
975 mt9m111->subdev.ctrl_handler = &mt9m111->hdl;
976 if (mt9m111->hdl.error) {
977 ret = mt9m111->hdl.error;
981 /* Second stage probe - when a capture adapter is there */
982 mt9m111->rect.left = MT9M111_MIN_DARK_COLS;
983 mt9m111->rect.top = MT9M111_MIN_DARK_ROWS;
984 mt9m111->rect.width = MT9M111_MAX_WIDTH;
985 mt9m111->rect.height = MT9M111_MAX_HEIGHT;
986 mt9m111->fmt = &mt9m111_colour_fmts[0];
987 mt9m111->lastpage = -1;
988 mutex_init(&mt9m111->power_lock);
990 ret = soc_camera_power_init(&client->dev, ssdd);
994 ret = mt9m111_video_probe(client);
998 mt9m111->subdev.dev = &client->dev;
999 ret = v4l2_async_register_subdev(&mt9m111->subdev);
1006 v4l2_ctrl_handler_free(&mt9m111->hdl);
1008 v4l2_clk_put(mt9m111->clk);
1013 static int mt9m111_remove(struct i2c_client *client)
1015 struct mt9m111 *mt9m111 = to_mt9m111(client);
1017 v4l2_async_unregister_subdev(&mt9m111->subdev);
1018 v4l2_clk_put(mt9m111->clk);
1019 v4l2_ctrl_handler_free(&mt9m111->hdl);
1023 static const struct of_device_id mt9m111_of_match[] = {
1024 { .compatible = "micron,mt9m111", },
1027 MODULE_DEVICE_TABLE(of, mt9m111_of_match);
1029 static const struct i2c_device_id mt9m111_id[] = {
1033 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1035 static struct i2c_driver mt9m111_i2c_driver = {
1038 .of_match_table = of_match_ptr(mt9m111_of_match),
1040 .probe = mt9m111_probe,
1041 .remove = mt9m111_remove,
1042 .id_table = mt9m111_id,
1045 module_i2c_driver(mt9m111_i2c_driver);
1047 MODULE_DESCRIPTION("Micron/Aptina MT9M111/MT9M112/MT9M131 Camera driver");
1048 MODULE_AUTHOR("Robert Jarzmik");
1049 MODULE_LICENSE("GPL");