2 * Driver for MT9M111/MT9M112 CMOS Image Sensor from Micron
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 and mt9m112 i2c address is 0x5d or 0x48 (depending on SAddr pin)
23 * The platform has to define i2c_board_info and call i2c_register_board_info()
26 /* mt9m111: Sensor register addresses */
27 #define MT9M111_CHIP_VERSION 0x000
28 #define MT9M111_ROW_START 0x001
29 #define MT9M111_COLUMN_START 0x002
30 #define MT9M111_WINDOW_HEIGHT 0x003
31 #define MT9M111_WINDOW_WIDTH 0x004
32 #define MT9M111_HORIZONTAL_BLANKING_B 0x005
33 #define MT9M111_VERTICAL_BLANKING_B 0x006
34 #define MT9M111_HORIZONTAL_BLANKING_A 0x007
35 #define MT9M111_VERTICAL_BLANKING_A 0x008
36 #define MT9M111_SHUTTER_WIDTH 0x009
37 #define MT9M111_ROW_SPEED 0x00a
38 #define MT9M111_EXTRA_DELAY 0x00b
39 #define MT9M111_SHUTTER_DELAY 0x00c
40 #define MT9M111_RESET 0x00d
41 #define MT9M111_READ_MODE_B 0x020
42 #define MT9M111_READ_MODE_A 0x021
43 #define MT9M111_FLASH_CONTROL 0x023
44 #define MT9M111_GREEN1_GAIN 0x02b
45 #define MT9M111_BLUE_GAIN 0x02c
46 #define MT9M111_RED_GAIN 0x02d
47 #define MT9M111_GREEN2_GAIN 0x02e
48 #define MT9M111_GLOBAL_GAIN 0x02f
49 #define MT9M111_CONTEXT_CONTROL 0x0c8
50 #define MT9M111_PAGE_MAP 0x0f0
51 #define MT9M111_BYTE_WISE_ADDR 0x0f1
53 #define MT9M111_RESET_SYNC_CHANGES (1 << 15)
54 #define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
55 #define MT9M111_RESET_SHOW_BAD_FRAMES (1 << 8)
56 #define MT9M111_RESET_RESET_SOC (1 << 5)
57 #define MT9M111_RESET_OUTPUT_DISABLE (1 << 4)
58 #define MT9M111_RESET_CHIP_ENABLE (1 << 3)
59 #define MT9M111_RESET_ANALOG_STANDBY (1 << 2)
60 #define MT9M111_RESET_RESTART_FRAME (1 << 1)
61 #define MT9M111_RESET_RESET_MODE (1 << 0)
63 #define MT9M111_RMB_MIRROR_COLS (1 << 1)
64 #define MT9M111_RMB_MIRROR_ROWS (1 << 0)
65 #define MT9M111_CTXT_CTRL_RESTART (1 << 15)
66 #define MT9M111_CTXT_CTRL_DEFECTCOR_B (1 << 12)
67 #define MT9M111_CTXT_CTRL_RESIZE_B (1 << 10)
68 #define MT9M111_CTXT_CTRL_CTRL2_B (1 << 9)
69 #define MT9M111_CTXT_CTRL_GAMMA_B (1 << 8)
70 #define MT9M111_CTXT_CTRL_XENON_EN (1 << 7)
71 #define MT9M111_CTXT_CTRL_READ_MODE_B (1 << 3)
72 #define MT9M111_CTXT_CTRL_LED_FLASH_EN (1 << 2)
73 #define MT9M111_CTXT_CTRL_VBLANK_SEL_B (1 << 1)
74 #define MT9M111_CTXT_CTRL_HBLANK_SEL_B (1 << 0)
76 * mt9m111: Colorpipe register addresses (0x100..0x1ff)
78 #define MT9M111_OPER_MODE_CTRL 0x106
79 #define MT9M111_OUTPUT_FORMAT_CTRL 0x108
80 #define MT9M111_REDUCER_XZOOM_B 0x1a0
81 #define MT9M111_REDUCER_XSIZE_B 0x1a1
82 #define MT9M111_REDUCER_YZOOM_B 0x1a3
83 #define MT9M111_REDUCER_YSIZE_B 0x1a4
84 #define MT9M111_REDUCER_XZOOM_A 0x1a6
85 #define MT9M111_REDUCER_XSIZE_A 0x1a7
86 #define MT9M111_REDUCER_YZOOM_A 0x1a9
87 #define MT9M111_REDUCER_YSIZE_A 0x1aa
89 #define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a
90 #define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
92 #define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
93 #define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1)
95 #define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14)
96 #define MT9M111_OUTFMT_BYPASS_IFP (1 << 10)
97 #define MT9M111_OUTFMT_INV_PIX_CLOCK (1 << 9)
98 #define MT9M111_OUTFMT_RGB (1 << 8)
99 #define MT9M111_OUTFMT_RGB565 (0x0 << 6)
100 #define MT9M111_OUTFMT_RGB555 (0x1 << 6)
101 #define MT9M111_OUTFMT_RGB444x (0x2 << 6)
102 #define MT9M111_OUTFMT_RGBx444 (0x3 << 6)
103 #define MT9M111_OUTFMT_TST_RAMP_OFF (0x0 << 4)
104 #define MT9M111_OUTFMT_TST_RAMP_COL (0x1 << 4)
105 #define MT9M111_OUTFMT_TST_RAMP_ROW (0x2 << 4)
106 #define MT9M111_OUTFMT_TST_RAMP_FRAME (0x3 << 4)
107 #define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3)
108 #define MT9M111_OUTFMT_AVG_CHROMA (1 << 2)
109 #define MT9M111_OUTFMT_SWAP_YCbCr_C_Y (1 << 1)
110 #define MT9M111_OUTFMT_SWAP_RGB_EVEN (1 << 1)
111 #define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr (1 << 0)
113 * mt9m111: Camera control register addresses (0x200..0x2ff not implemented)
116 #define reg_read(reg) mt9m111_reg_read(client, MT9M111_##reg)
117 #define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val))
118 #define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val))
119 #define reg_clear(reg, val) mt9m111_reg_clear(client, MT9M111_##reg, (val))
121 #define MT9M111_MIN_DARK_ROWS 8
122 #define MT9M111_MIN_DARK_COLS 24
123 #define MT9M111_MAX_HEIGHT 1024
124 #define MT9M111_MAX_WIDTH 1280
126 #define COL_FMT(_name, _depth, _fourcc, _colorspace) \
127 { .name = _name, .depth = _depth, .fourcc = _fourcc, \
128 .colorspace = _colorspace }
129 #define RGB_FMT(_name, _depth, _fourcc) \
130 COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_SRGB)
131 #define JPG_FMT(_name, _depth, _fourcc) \
132 COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_JPEG)
134 static const struct soc_camera_data_format mt9m111_colour_formats[] = {
135 JPG_FMT("CbYCrY 16 bit", 16, V4L2_PIX_FMT_UYVY),
136 JPG_FMT("CrYCbY 16 bit", 16, V4L2_PIX_FMT_VYUY),
137 JPG_FMT("YCbYCr 16 bit", 16, V4L2_PIX_FMT_YUYV),
138 JPG_FMT("YCrYCb 16 bit", 16, V4L2_PIX_FMT_YVYU),
139 RGB_FMT("RGB 565", 16, V4L2_PIX_FMT_RGB565),
140 RGB_FMT("RGB 555", 16, V4L2_PIX_FMT_RGB555),
141 RGB_FMT("Bayer (sRGB) 10 bit", 10, V4L2_PIX_FMT_SBGGR16),
142 RGB_FMT("Bayer (sRGB) 8 bit", 8, V4L2_PIX_FMT_SBGGR8),
145 enum mt9m111_context {
151 struct v4l2_subdev subdev;
152 int model; /* V4L2_IDENT_MT9M11x* codes from v4l2-chip-ident.h */
153 enum mt9m111_context context;
154 struct v4l2_rect rect;
156 unsigned char autoexposure;
157 unsigned char datawidth;
158 unsigned int powered:1;
159 unsigned int hflip:1;
160 unsigned int vflip:1;
161 unsigned int swap_rgb_even_odd:1;
162 unsigned int swap_rgb_red_blue:1;
163 unsigned int swap_yuv_y_chromas:1;
164 unsigned int swap_yuv_cb_cr:1;
165 unsigned int autowhitebalance:1;
168 static struct mt9m111 *to_mt9m111(const struct i2c_client *client)
170 return container_of(i2c_get_clientdata(client), struct mt9m111, subdev);
173 static int reg_page_map_set(struct i2c_client *client, const u16 reg)
177 static int lastpage = -1; /* PageMap cache value */
180 if (page == lastpage)
185 ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
191 static int mt9m111_reg_read(struct i2c_client *client, const u16 reg)
195 ret = reg_page_map_set(client, reg);
197 ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff)));
199 dev_dbg(&client->dev, "read reg.%03x -> %04x\n", reg, ret);
203 static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
208 ret = reg_page_map_set(client, reg);
210 ret = i2c_smbus_write_word_data(client, reg & 0xff,
212 dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
216 static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
221 ret = mt9m111_reg_read(client, reg);
223 ret = mt9m111_reg_write(client, reg, ret | data);
227 static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
232 ret = mt9m111_reg_read(client, reg);
233 return mt9m111_reg_write(client, reg, ret & ~data);
236 static int mt9m111_set_context(struct i2c_client *client,
237 enum mt9m111_context ctxt)
239 int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
240 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
241 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
242 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
243 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
244 int valA = MT9M111_CTXT_CTRL_RESTART;
246 if (ctxt == HIGHPOWER)
247 return reg_write(CONTEXT_CONTROL, valB);
249 return reg_write(CONTEXT_CONTROL, valA);
252 static int mt9m111_setup_rect(struct i2c_client *client,
253 struct v4l2_rect *rect)
255 struct mt9m111 *mt9m111 = to_mt9m111(client);
256 int ret, is_raw_format;
257 int width = rect->width;
258 int height = rect->height;
260 if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8)
261 || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16))
266 ret = reg_write(COLUMN_START, rect->left);
268 ret = reg_write(ROW_START, rect->top);
272 ret = reg_write(WINDOW_WIDTH, width);
274 ret = reg_write(WINDOW_HEIGHT, height);
277 ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
279 ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
281 ret = reg_write(REDUCER_XSIZE_B, width);
283 ret = reg_write(REDUCER_YSIZE_B, height);
285 ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
287 ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
289 ret = reg_write(REDUCER_XSIZE_A, width);
291 ret = reg_write(REDUCER_YSIZE_A, height);
297 static int mt9m111_setup_pixfmt(struct i2c_client *client, u16 outfmt)
301 ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
303 ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
307 static int mt9m111_setfmt_bayer8(struct i2c_client *client)
309 return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_PROCESSED_BAYER);
312 static int mt9m111_setfmt_bayer10(struct i2c_client *client)
314 return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_BYPASS_IFP);
317 static int mt9m111_setfmt_rgb565(struct i2c_client *client)
319 struct mt9m111 *mt9m111 = to_mt9m111(client);
322 if (mt9m111->swap_rgb_red_blue)
323 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
324 if (mt9m111->swap_rgb_even_odd)
325 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
326 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
328 return mt9m111_setup_pixfmt(client, val);
331 static int mt9m111_setfmt_rgb555(struct i2c_client *client)
333 struct mt9m111 *mt9m111 = to_mt9m111(client);
336 if (mt9m111->swap_rgb_red_blue)
337 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
338 if (mt9m111->swap_rgb_even_odd)
339 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
340 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
342 return mt9m111_setup_pixfmt(client, val);
345 static int mt9m111_setfmt_yuv(struct i2c_client *client)
347 struct mt9m111 *mt9m111 = to_mt9m111(client);
350 if (mt9m111->swap_yuv_cb_cr)
351 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
352 if (mt9m111->swap_yuv_y_chromas)
353 val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
355 return mt9m111_setup_pixfmt(client, val);
358 static int mt9m111_enable(struct i2c_client *client)
360 struct mt9m111 *mt9m111 = to_mt9m111(client);
363 ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
365 mt9m111->powered = 1;
369 static int mt9m111_reset(struct i2c_client *client)
373 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
375 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
377 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
378 | MT9M111_RESET_RESET_SOC);
383 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
385 struct soc_camera_link *icl = to_soc_camera_link(icd);
386 unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
387 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
388 SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
390 return soc_camera_apply_sensor_flags(icl, flags);
393 static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
398 static int mt9m111_set_crop(struct soc_camera_device *icd,
399 struct v4l2_rect *rect)
401 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
402 struct mt9m111 *mt9m111 = to_mt9m111(client);
405 dev_dbg(&icd->dev, "%s left=%d, top=%d, width=%d, height=%d\n",
406 __func__, rect->left, rect->top, rect->width,
409 ret = mt9m111_setup_rect(client, rect);
411 mt9m111->rect = *rect;
415 static int mt9m111_set_pixfmt(struct i2c_client *client, u32 pixfmt)
417 struct mt9m111 *mt9m111 = to_mt9m111(client);
421 case V4L2_PIX_FMT_SBGGR8:
422 ret = mt9m111_setfmt_bayer8(client);
424 case V4L2_PIX_FMT_SBGGR16:
425 ret = mt9m111_setfmt_bayer10(client);
427 case V4L2_PIX_FMT_RGB555:
428 ret = mt9m111_setfmt_rgb555(client);
430 case V4L2_PIX_FMT_RGB565:
431 ret = mt9m111_setfmt_rgb565(client);
433 case V4L2_PIX_FMT_UYVY:
434 mt9m111->swap_yuv_y_chromas = 0;
435 mt9m111->swap_yuv_cb_cr = 0;
436 ret = mt9m111_setfmt_yuv(client);
438 case V4L2_PIX_FMT_VYUY:
439 mt9m111->swap_yuv_y_chromas = 0;
440 mt9m111->swap_yuv_cb_cr = 1;
441 ret = mt9m111_setfmt_yuv(client);
443 case V4L2_PIX_FMT_YUYV:
444 mt9m111->swap_yuv_y_chromas = 1;
445 mt9m111->swap_yuv_cb_cr = 0;
446 ret = mt9m111_setfmt_yuv(client);
448 case V4L2_PIX_FMT_YVYU:
449 mt9m111->swap_yuv_y_chromas = 1;
450 mt9m111->swap_yuv_cb_cr = 1;
451 ret = mt9m111_setfmt_yuv(client);
454 dev_err(&client->dev, "Pixel format not handled : %x\n", pixfmt);
459 mt9m111->pixfmt = pixfmt;
464 static int mt9m111_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
466 struct i2c_client *client = sd->priv;
467 struct mt9m111 *mt9m111 = to_mt9m111(client);
468 struct v4l2_pix_format *pix = &f->fmt.pix;
469 struct v4l2_rect rect = {
470 .left = mt9m111->rect.left,
471 .top = mt9m111->rect.top,
473 .height = pix->height,
477 dev_dbg(&client->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n",
478 __func__, pix->pixelformat, rect.left, rect.top, rect.width,
481 ret = mt9m111_setup_rect(client, &rect);
483 ret = mt9m111_set_pixfmt(client, pix->pixelformat);
485 mt9m111->rect = rect;
489 static int mt9m111_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
491 struct v4l2_pix_format *pix = &f->fmt.pix;
493 if (pix->height > MT9M111_MAX_HEIGHT)
494 pix->height = MT9M111_MAX_HEIGHT;
495 if (pix->width > MT9M111_MAX_WIDTH)
496 pix->width = MT9M111_MAX_WIDTH;
501 static int mt9m111_g_chip_ident(struct v4l2_subdev *sd,
502 struct v4l2_dbg_chip_ident *id)
504 struct i2c_client *client = sd->priv;
505 struct mt9m111 *mt9m111 = to_mt9m111(client);
507 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
510 if (id->match.addr != client->addr)
513 id->ident = mt9m111->model;
519 #ifdef CONFIG_VIDEO_ADV_DEBUG
520 static int mt9m111_g_register(struct v4l2_subdev *sd,
521 struct v4l2_dbg_register *reg)
523 struct i2c_client *client = sd->priv;
526 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
528 if (reg->match.addr != client->addr)
531 val = mt9m111_reg_read(client, reg->reg);
535 if (reg->val > 0xffff)
541 static int mt9m111_s_register(struct v4l2_subdev *sd,
542 struct v4l2_dbg_register *reg)
544 struct i2c_client *client = sd->priv;
546 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
549 if (reg->match.addr != client->addr)
552 if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
559 static const struct v4l2_queryctrl mt9m111_controls[] = {
561 .id = V4L2_CID_VFLIP,
562 .type = V4L2_CTRL_TYPE_BOOLEAN,
563 .name = "Flip Verticaly",
569 .id = V4L2_CID_HFLIP,
570 .type = V4L2_CTRL_TYPE_BOOLEAN,
571 .name = "Flip Horizontaly",
576 }, { /* gain = 1/32*val (=>gain=1 if val==32) */
578 .type = V4L2_CTRL_TYPE_INTEGER,
581 .maximum = 63 * 2 * 2,
584 .flags = V4L2_CTRL_FLAG_SLIDER,
586 .id = V4L2_CID_EXPOSURE_AUTO,
587 .type = V4L2_CTRL_TYPE_BOOLEAN,
588 .name = "Auto Exposure",
596 static int mt9m111_resume(struct soc_camera_device *icd);
597 static int mt9m111_init(struct soc_camera_device *icd);
598 static int mt9m111_release(struct soc_camera_device *icd);
600 static struct soc_camera_ops mt9m111_ops = {
601 .init = mt9m111_init,
602 .resume = mt9m111_resume,
603 .release = mt9m111_release,
604 .set_crop = mt9m111_set_crop,
605 .query_bus_param = mt9m111_query_bus_param,
606 .set_bus_param = mt9m111_set_bus_param,
607 .controls = mt9m111_controls,
608 .num_controls = ARRAY_SIZE(mt9m111_controls),
611 static int mt9m111_set_flip(struct i2c_client *client, int flip, int mask)
613 struct mt9m111 *mt9m111 = to_mt9m111(client);
616 if (mt9m111->context == HIGHPOWER) {
618 ret = reg_set(READ_MODE_B, mask);
620 ret = reg_clear(READ_MODE_B, mask);
623 ret = reg_set(READ_MODE_A, mask);
625 ret = reg_clear(READ_MODE_A, mask);
631 static int mt9m111_get_global_gain(struct i2c_client *client)
635 data = reg_read(GLOBAL_GAIN);
637 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
638 (1 << ((data >> 9) & 1));
642 static int mt9m111_set_global_gain(struct i2c_client *client, int gain)
644 struct soc_camera_device *icd = client->dev.platform_data;
647 if (gain > 63 * 2 * 2)
651 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
652 val = (1 << 10) | (1 << 9) | (gain / 4);
653 else if ((gain >= 64) && (gain < 64 * 2))
654 val = (1 << 9) | (gain / 2);
658 return reg_write(GLOBAL_GAIN, val);
661 static int mt9m111_set_autoexposure(struct i2c_client *client, int on)
663 struct mt9m111 *mt9m111 = to_mt9m111(client);
667 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
669 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
672 mt9m111->autoexposure = on;
677 static int mt9m111_set_autowhitebalance(struct i2c_client *client, int on)
679 struct mt9m111 *mt9m111 = to_mt9m111(client);
683 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
685 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
688 mt9m111->autowhitebalance = on;
693 static int mt9m111_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
695 struct i2c_client *client = sd->priv;
696 struct mt9m111 *mt9m111 = to_mt9m111(client);
701 if (mt9m111->context == HIGHPOWER)
702 data = reg_read(READ_MODE_B);
704 data = reg_read(READ_MODE_A);
708 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
711 if (mt9m111->context == HIGHPOWER)
712 data = reg_read(READ_MODE_B);
714 data = reg_read(READ_MODE_A);
718 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
721 data = mt9m111_get_global_gain(client);
726 case V4L2_CID_EXPOSURE_AUTO:
727 ctrl->value = mt9m111->autoexposure;
729 case V4L2_CID_AUTO_WHITE_BALANCE:
730 ctrl->value = mt9m111->autowhitebalance;
736 static int mt9m111_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
738 struct i2c_client *client = sd->priv;
739 struct mt9m111 *mt9m111 = to_mt9m111(client);
740 const struct v4l2_queryctrl *qctrl;
743 qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
749 mt9m111->vflip = ctrl->value;
750 ret = mt9m111_set_flip(client, ctrl->value,
751 MT9M111_RMB_MIRROR_ROWS);
754 mt9m111->hflip = ctrl->value;
755 ret = mt9m111_set_flip(client, ctrl->value,
756 MT9M111_RMB_MIRROR_COLS);
759 ret = mt9m111_set_global_gain(client, ctrl->value);
761 case V4L2_CID_EXPOSURE_AUTO:
762 ret = mt9m111_set_autoexposure(client, ctrl->value);
764 case V4L2_CID_AUTO_WHITE_BALANCE:
765 ret = mt9m111_set_autowhitebalance(client, ctrl->value);
774 static int mt9m111_restore_state(struct i2c_client *client)
776 struct mt9m111 *mt9m111 = to_mt9m111(client);
777 struct soc_camera_device *icd = client->dev.platform_data;
779 mt9m111_set_context(client, mt9m111->context);
780 mt9m111_set_pixfmt(client, mt9m111->pixfmt);
781 mt9m111_setup_rect(client, &mt9m111->rect);
782 mt9m111_set_flip(client, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
783 mt9m111_set_flip(client, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
784 mt9m111_set_global_gain(client, icd->gain);
785 mt9m111_set_autoexposure(client, mt9m111->autoexposure);
786 mt9m111_set_autowhitebalance(client, mt9m111->autowhitebalance);
790 static int mt9m111_resume(struct soc_camera_device *icd)
792 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
793 struct mt9m111 *mt9m111 = to_mt9m111(client);
796 if (mt9m111->powered) {
797 ret = mt9m111_enable(client);
799 ret = mt9m111_reset(client);
801 ret = mt9m111_restore_state(client);
806 static int mt9m111_init(struct soc_camera_device *icd)
808 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
809 struct mt9m111 *mt9m111 = to_mt9m111(client);
812 mt9m111->context = HIGHPOWER;
813 ret = mt9m111_enable(client);
815 ret = mt9m111_reset(client);
817 ret = mt9m111_set_context(client, mt9m111->context);
819 ret = mt9m111_set_autoexposure(client, mt9m111->autoexposure);
821 dev_err(&icd->dev, "mt9m11x init failed: %d\n", ret);
825 static int mt9m111_release(struct soc_camera_device *icd)
827 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
828 struct mt9m111 *mt9m111 = to_mt9m111(client);
831 ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
833 mt9m111->powered = 0;
836 dev_err(&icd->dev, "mt9m11x release failed: %d\n", ret);
842 * Interface active, can use i2c. If it fails, it can indeed mean, that
843 * this wasn't our capture interface, so, we wait for the right one
845 static int mt9m111_video_probe(struct soc_camera_device *icd,
846 struct i2c_client *client)
848 struct mt9m111 *mt9m111 = to_mt9m111(client);
853 * We must have a parent by now. And it cannot be a wrong one.
854 * So this entire test is completely redundant.
856 if (!icd->dev.parent ||
857 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
860 ret = mt9m111_enable(client);
863 ret = mt9m111_reset(client);
867 data = reg_read(CHIP_VERSION);
870 case 0x143a: /* MT9M111 */
871 mt9m111->model = V4L2_IDENT_MT9M111;
873 case 0x148c: /* MT9M112 */
874 mt9m111->model = V4L2_IDENT_MT9M112;
879 "No MT9M11x chip detected, register read %x\n", data);
883 icd->formats = mt9m111_colour_formats;
884 icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);
886 dev_info(&icd->dev, "Detected a MT9M11x chip ID %x\n", data);
888 mt9m111->autoexposure = 1;
889 mt9m111->autowhitebalance = 1;
891 mt9m111->swap_rgb_even_odd = 1;
892 mt9m111->swap_rgb_red_blue = 1;
898 static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
899 .g_ctrl = mt9m111_g_ctrl,
900 .s_ctrl = mt9m111_s_ctrl,
901 .g_chip_ident = mt9m111_g_chip_ident,
902 #ifdef CONFIG_VIDEO_ADV_DEBUG
903 .g_register = mt9m111_g_register,
904 .s_register = mt9m111_s_register,
908 static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
909 .s_fmt = mt9m111_s_fmt,
910 .try_fmt = mt9m111_try_fmt,
913 static struct v4l2_subdev_ops mt9m111_subdev_ops = {
914 .core = &mt9m111_subdev_core_ops,
915 .video = &mt9m111_subdev_video_ops,
918 static int mt9m111_probe(struct i2c_client *client,
919 const struct i2c_device_id *did)
921 struct mt9m111 *mt9m111;
922 struct soc_camera_device *icd = client->dev.platform_data;
923 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
924 struct soc_camera_link *icl;
928 dev_err(&client->dev, "MT9M11x: missing soc-camera data!\n");
932 icl = to_soc_camera_link(icd);
934 dev_err(&client->dev, "MT9M11x driver needs platform data\n");
938 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
939 dev_warn(&adapter->dev,
940 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
944 mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
948 v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
950 /* Second stage probe - when a capture adapter is there */
951 icd->ops = &mt9m111_ops;
952 icd->rect_max.left = MT9M111_MIN_DARK_COLS;
953 icd->rect_max.top = MT9M111_MIN_DARK_ROWS;
954 icd->rect_max.width = MT9M111_MAX_WIDTH;
955 icd->rect_max.height = MT9M111_MAX_HEIGHT;
956 icd->rect_current.left = icd->rect_max.left;
957 icd->rect_current.top = icd->rect_max.top;
958 icd->width_min = MT9M111_MIN_DARK_ROWS;
959 icd->height_min = MT9M111_MIN_DARK_COLS;
962 ret = mt9m111_video_probe(icd, client);
965 i2c_set_clientdata(client, NULL);
972 static int mt9m111_remove(struct i2c_client *client)
974 struct mt9m111 *mt9m111 = to_mt9m111(client);
975 struct soc_camera_device *icd = client->dev.platform_data;
978 i2c_set_clientdata(client, NULL);
979 client->driver = NULL;
985 static const struct i2c_device_id mt9m111_id[] = {
989 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
991 static struct i2c_driver mt9m111_i2c_driver = {
995 .probe = mt9m111_probe,
996 .remove = mt9m111_remove,
997 .id_table = mt9m111_id,
1000 static int __init mt9m111_mod_init(void)
1002 return i2c_add_driver(&mt9m111_i2c_driver);
1005 static void __exit mt9m111_mod_exit(void)
1007 i2c_del_driver(&mt9m111_i2c_driver);
1010 module_init(mt9m111_mod_init);
1011 module_exit(mt9m111_mod_exit);
1013 MODULE_DESCRIPTION("Micron MT9M111/MT9M112 Camera driver");
1014 MODULE_AUTHOR("Robert Jarzmik");
1015 MODULE_LICENSE("GPL");