2 * Driver for MT9M111 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 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)
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(icd, MT9M111_##reg)
117 #define reg_write(reg, val) mt9m111_reg_write(icd, MT9M111_##reg, (val))
118 #define reg_set(reg, val) mt9m111_reg_set(icd, MT9M111_##reg, (val))
119 #define reg_clear(reg, val) mt9m111_reg_clear(icd, 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)
132 static const struct soc_camera_data_format mt9m111_colour_formats[] = {
133 COL_FMT("YCrYCb 8 bit", 8, V4L2_PIX_FMT_YUYV, V4L2_COLORSPACE_JPEG),
134 RGB_FMT("RGB 565", 16, V4L2_PIX_FMT_RGB565),
135 RGB_FMT("RGB 555", 16, V4L2_PIX_FMT_RGB555),
136 RGB_FMT("Bayer (sRGB) 10 bit", 10, V4L2_PIX_FMT_SBGGR16),
137 RGB_FMT("Bayer (sRGB) 8 bit", 8, V4L2_PIX_FMT_SBGGR8),
140 enum mt9m111_context {
146 struct i2c_client *client;
147 struct soc_camera_device icd;
148 int model; /* V4L2_IDENT_MT9M111* codes from v4l2-chip-ident.h */
149 enum mt9m111_context context;
150 unsigned int left, top, width, height;
152 unsigned char autoexposure;
153 unsigned char datawidth;
154 unsigned int powered:1;
155 unsigned int hflip:1;
156 unsigned int vflip:1;
157 unsigned int swap_rgb_even_odd:1;
158 unsigned int swap_rgb_red_blue:1;
159 unsigned int swap_yuv_y_chromas:1;
160 unsigned int swap_yuv_cb_cr:1;
163 static int reg_page_map_set(struct i2c_client *client, const u16 reg)
167 static int lastpage = -1; /* PageMap cache value */
170 if (page == lastpage)
175 ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
181 static int mt9m111_reg_read(struct soc_camera_device *icd, const u16 reg)
183 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
184 struct i2c_client *client = mt9m111->client;
187 ret = reg_page_map_set(client, reg);
189 ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff)));
191 dev_dbg(&icd->dev, "read reg.%03x -> %04x\n", reg, ret);
195 static int mt9m111_reg_write(struct soc_camera_device *icd, const u16 reg,
198 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
199 struct i2c_client *client = mt9m111->client;
202 ret = reg_page_map_set(client, reg);
204 ret = i2c_smbus_write_word_data(mt9m111->client, (reg & 0xff),
206 dev_dbg(&icd->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
210 static int mt9m111_reg_set(struct soc_camera_device *icd, const u16 reg,
215 ret = mt9m111_reg_read(icd, reg);
217 ret = mt9m111_reg_write(icd, reg, ret | data);
221 static int mt9m111_reg_clear(struct soc_camera_device *icd, const u16 reg,
226 ret = mt9m111_reg_read(icd, reg);
227 return mt9m111_reg_write(icd, reg, ret & ~data);
230 static int mt9m111_set_context(struct soc_camera_device *icd,
231 enum mt9m111_context ctxt)
233 int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
234 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
235 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
236 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
237 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
238 int valA = MT9M111_CTXT_CTRL_RESTART;
240 if (ctxt == HIGHPOWER)
241 return reg_write(CONTEXT_CONTROL, valB);
243 return reg_write(CONTEXT_CONTROL, valA);
246 static int mt9m111_setup_rect(struct soc_camera_device *icd)
248 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
249 int ret, is_raw_format;
250 int width = mt9m111->width;
251 int height = mt9m111->height;
253 if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8)
254 || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16))
259 ret = reg_write(COLUMN_START, mt9m111->left);
261 ret = reg_write(ROW_START, mt9m111->top);
265 ret = reg_write(WINDOW_WIDTH, width);
267 ret = reg_write(WINDOW_HEIGHT, height);
270 ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
272 ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
274 ret = reg_write(REDUCER_XSIZE_B, width);
276 ret = reg_write(REDUCER_YSIZE_B, height);
278 ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
280 ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
282 ret = reg_write(REDUCER_XSIZE_A, width);
284 ret = reg_write(REDUCER_YSIZE_A, height);
290 static int mt9m111_setup_pixfmt(struct soc_camera_device *icd, u16 outfmt)
294 ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
296 ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
300 static int mt9m111_setfmt_bayer8(struct soc_camera_device *icd)
302 return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_PROCESSED_BAYER);
305 static int mt9m111_setfmt_bayer10(struct soc_camera_device *icd)
307 return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_BYPASS_IFP);
310 static int mt9m111_setfmt_rgb565(struct soc_camera_device *icd)
312 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
315 if (mt9m111->swap_rgb_red_blue)
316 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
317 if (mt9m111->swap_rgb_even_odd)
318 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
319 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
321 return mt9m111_setup_pixfmt(icd, val);
324 static int mt9m111_setfmt_rgb555(struct soc_camera_device *icd)
326 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
329 if (mt9m111->swap_rgb_red_blue)
330 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
331 if (mt9m111->swap_rgb_even_odd)
332 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
333 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
335 return mt9m111_setup_pixfmt(icd, val);
338 static int mt9m111_setfmt_yuv(struct soc_camera_device *icd)
340 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
343 if (mt9m111->swap_yuv_cb_cr)
344 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
345 if (mt9m111->swap_yuv_y_chromas)
346 val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
348 return mt9m111_setup_pixfmt(icd, val);
351 static int mt9m111_enable(struct soc_camera_device *icd)
353 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
354 struct soc_camera_link *icl = mt9m111->client->dev.platform_data;
358 ret = icl->power(&mt9m111->client->dev, 1);
360 dev_err(icd->vdev->parent,
361 "Platform failed to power-on the camera.\n");
366 ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
368 mt9m111->powered = 1;
372 static int mt9m111_disable(struct soc_camera_device *icd)
374 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
375 struct soc_camera_link *icl = mt9m111->client->dev.platform_data;
378 ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
380 mt9m111->powered = 0;
383 icl->power(&mt9m111->client->dev, 0);
388 static int mt9m111_reset(struct soc_camera_device *icd)
392 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
394 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
396 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
397 | MT9M111_RESET_RESET_SOC);
401 static int mt9m111_start_capture(struct soc_camera_device *icd)
406 static int mt9m111_stop_capture(struct soc_camera_device *icd)
411 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
413 return SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
414 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
418 static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
423 static int mt9m111_set_pixfmt(struct soc_camera_device *icd, u32 pixfmt)
425 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
429 case V4L2_PIX_FMT_SBGGR8:
430 ret = mt9m111_setfmt_bayer8(icd);
432 case V4L2_PIX_FMT_SBGGR16:
433 ret = mt9m111_setfmt_bayer10(icd);
435 case V4L2_PIX_FMT_RGB555:
436 ret = mt9m111_setfmt_rgb555(icd);
438 case V4L2_PIX_FMT_RGB565:
439 ret = mt9m111_setfmt_rgb565(icd);
441 case V4L2_PIX_FMT_YUYV:
442 ret = mt9m111_setfmt_yuv(icd);
445 dev_err(&icd->dev, "Pixel format not handled : %x\n", pixfmt);
450 mt9m111->pixfmt = pixfmt;
455 static int mt9m111_set_fmt_cap(struct soc_camera_device *icd,
456 __u32 pixfmt, struct v4l2_rect *rect)
458 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
461 mt9m111->left = rect->left;
462 mt9m111->top = rect->top;
463 mt9m111->width = rect->width;
464 mt9m111->height = rect->height;
466 dev_dbg(&icd->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n",
467 __func__, pixfmt, mt9m111->left, mt9m111->top, mt9m111->width,
470 ret = mt9m111_setup_rect(icd);
472 ret = mt9m111_set_pixfmt(icd, pixfmt);
476 static int mt9m111_try_fmt_cap(struct soc_camera_device *icd,
477 struct v4l2_format *f)
479 if (f->fmt.pix.height > MT9M111_MAX_HEIGHT)
480 f->fmt.pix.height = MT9M111_MAX_HEIGHT;
481 if (f->fmt.pix.width > MT9M111_MAX_WIDTH)
482 f->fmt.pix.width = MT9M111_MAX_WIDTH;
487 static int mt9m111_get_chip_id(struct soc_camera_device *icd,
488 struct v4l2_chip_ident *id)
490 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
492 if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR)
495 if (id->match_chip != mt9m111->client->addr)
498 id->ident = mt9m111->model;
504 #ifdef CONFIG_VIDEO_ADV_DEBUG
505 static int mt9m111_get_register(struct soc_camera_device *icd,
506 struct v4l2_register *reg)
510 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
512 if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
514 if (reg->match_chip != mt9m111->client->addr)
517 val = mt9m111_reg_read(icd, reg->reg);
520 if (reg->val > 0xffff)
526 static int mt9m111_set_register(struct soc_camera_device *icd,
527 struct v4l2_register *reg)
529 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
531 if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
534 if (reg->match_chip != mt9m111->client->addr)
537 if (mt9m111_reg_write(icd, reg->reg, reg->val) < 0)
544 static const struct v4l2_queryctrl mt9m111_controls[] = {
546 .id = V4L2_CID_VFLIP,
547 .type = V4L2_CTRL_TYPE_BOOLEAN,
548 .name = "Flip Verticaly",
554 .id = V4L2_CID_HFLIP,
555 .type = V4L2_CTRL_TYPE_BOOLEAN,
556 .name = "Flip Horizontaly",
561 }, { /* gain = 1/32*val (=>gain=1 if val==32) */
563 .type = V4L2_CTRL_TYPE_INTEGER,
566 .maximum = 63 * 2 * 2,
569 .flags = V4L2_CTRL_FLAG_SLIDER,
571 .id = V4L2_CID_EXPOSURE_AUTO,
572 .type = V4L2_CTRL_TYPE_BOOLEAN,
573 .name = "Auto Exposure",
581 static int mt9m111_video_probe(struct soc_camera_device *);
582 static void mt9m111_video_remove(struct soc_camera_device *);
583 static int mt9m111_get_control(struct soc_camera_device *,
584 struct v4l2_control *);
585 static int mt9m111_set_control(struct soc_camera_device *,
586 struct v4l2_control *);
587 static int mt9m111_resume(struct soc_camera_device *icd);
588 static int mt9m111_init(struct soc_camera_device *icd);
589 static int mt9m111_release(struct soc_camera_device *icd);
591 static struct soc_camera_ops mt9m111_ops = {
592 .owner = THIS_MODULE,
593 .probe = mt9m111_video_probe,
594 .remove = mt9m111_video_remove,
595 .init = mt9m111_init,
596 .resume = mt9m111_resume,
597 .release = mt9m111_release,
598 .start_capture = mt9m111_start_capture,
599 .stop_capture = mt9m111_stop_capture,
600 .set_fmt_cap = mt9m111_set_fmt_cap,
601 .try_fmt_cap = mt9m111_try_fmt_cap,
602 .query_bus_param = mt9m111_query_bus_param,
603 .set_bus_param = mt9m111_set_bus_param,
604 .controls = mt9m111_controls,
605 .num_controls = ARRAY_SIZE(mt9m111_controls),
606 .get_control = mt9m111_get_control,
607 .set_control = mt9m111_set_control,
608 .get_chip_id = mt9m111_get_chip_id,
609 #ifdef CONFIG_VIDEO_ADV_DEBUG
610 .get_register = mt9m111_get_register,
611 .set_register = mt9m111_set_register,
615 static int mt9m111_set_flip(struct soc_camera_device *icd, int flip, int mask)
617 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
620 if (mt9m111->context == HIGHPOWER) {
622 ret = reg_set(READ_MODE_B, mask);
624 ret = reg_clear(READ_MODE_B, mask);
627 ret = reg_set(READ_MODE_A, mask);
629 ret = reg_clear(READ_MODE_A, mask);
635 static int mt9m111_get_global_gain(struct soc_camera_device *icd)
637 unsigned int data, gain;
639 data = reg_read(GLOBAL_GAIN);
641 gain = ((data & (1 << 10)) * 2)
642 | ((data & (1 << 9)) * 2)
649 static int mt9m111_set_global_gain(struct soc_camera_device *icd, int gain)
653 if (gain > 63 * 2 * 2)
657 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
658 val = (1 << 10) | (1 << 9) | (gain / 4);
659 else if ((gain >= 64) && (gain < 64 * 2))
660 val = (1 << 9) | (gain / 2);
664 return reg_write(GLOBAL_GAIN, val);
667 static int mt9m111_set_autoexposure(struct soc_camera_device *icd, int on)
669 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
673 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
675 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
678 mt9m111->autoexposure = on;
682 static int mt9m111_get_control(struct soc_camera_device *icd,
683 struct v4l2_control *ctrl)
685 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
690 if (mt9m111->context == HIGHPOWER)
691 data = reg_read(READ_MODE_B);
693 data = reg_read(READ_MODE_A);
697 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
700 if (mt9m111->context == HIGHPOWER)
701 data = reg_read(READ_MODE_B);
703 data = reg_read(READ_MODE_A);
707 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
710 data = mt9m111_get_global_gain(icd);
715 case V4L2_CID_EXPOSURE_AUTO:
716 ctrl->value = mt9m111->autoexposure;
722 static int mt9m111_set_control(struct soc_camera_device *icd,
723 struct v4l2_control *ctrl)
725 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
726 const struct v4l2_queryctrl *qctrl;
729 qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
736 mt9m111->vflip = ctrl->value;
737 ret = mt9m111_set_flip(icd, ctrl->value,
738 MT9M111_RMB_MIRROR_ROWS);
741 mt9m111->hflip = ctrl->value;
742 ret = mt9m111_set_flip(icd, ctrl->value,
743 MT9M111_RMB_MIRROR_COLS);
746 ret = mt9m111_set_global_gain(icd, ctrl->value);
748 case V4L2_CID_EXPOSURE_AUTO:
749 ret = mt9m111_set_autoexposure(icd, ctrl->value);
758 static int mt9m111_restore_state(struct soc_camera_device *icd)
760 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
762 mt9m111_set_context(icd, mt9m111->context);
763 mt9m111_set_pixfmt(icd, mt9m111->pixfmt);
764 mt9m111_setup_rect(icd);
765 mt9m111_set_flip(icd, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
766 mt9m111_set_flip(icd, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
767 mt9m111_set_global_gain(icd, icd->gain);
768 mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
772 static int mt9m111_resume(struct soc_camera_device *icd)
774 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
777 if (mt9m111->powered) {
778 ret = mt9m111_enable(icd);
780 ret = mt9m111_reset(icd);
782 ret = mt9m111_restore_state(icd);
787 static int mt9m111_init(struct soc_camera_device *icd)
789 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
792 mt9m111->context = HIGHPOWER;
793 ret = mt9m111_enable(icd);
795 ret = mt9m111_reset(icd);
797 ret = mt9m111_set_context(icd, mt9m111->context);
799 ret = mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
801 dev_err(&icd->dev, "mt9m111 init failed: %d\n", ret);
805 static int mt9m111_release(struct soc_camera_device *icd)
809 ret = mt9m111_disable(icd);
811 dev_err(&icd->dev, "mt9m111 release failed: %d\n", ret);
817 * Interface active, can use i2c. If it fails, it can indeed mean, that
818 * this wasn't our capture interface, so, we wait for the right one
820 static int mt9m111_video_probe(struct soc_camera_device *icd)
822 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
827 * We must have a parent by now. And it cannot be a wrong one.
828 * So this entire test is completely redundant.
830 if (!icd->dev.parent ||
831 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
834 ret = mt9m111_enable(icd);
837 ret = mt9m111_reset(icd);
841 data = reg_read(CHIP_VERSION);
845 mt9m111->model = V4L2_IDENT_MT9M111;
846 icd->formats = mt9m111_colour_formats;
847 icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);
852 "No MT9M111 chip detected, register read %x\n", data);
856 dev_info(&icd->dev, "Detected a MT9M111 chip ID 0x143a\n");
858 ret = soc_camera_video_start(icd);
862 mt9m111->autoexposure = 1;
864 mt9m111->swap_rgb_even_odd = 1;
865 mt9m111->swap_rgb_red_blue = 1;
873 static void mt9m111_video_remove(struct soc_camera_device *icd)
875 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
877 dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9m111->client->addr,
878 mt9m111->icd.dev.parent, mt9m111->icd.vdev);
879 soc_camera_video_stop(&mt9m111->icd);
882 static int mt9m111_probe(struct i2c_client *client,
883 const struct i2c_device_id *did)
885 struct mt9m111 *mt9m111;
886 struct soc_camera_device *icd;
887 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
888 struct soc_camera_link *icl = client->dev.platform_data;
892 dev_err(&client->dev, "MT9M111 driver needs platform data\n");
896 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
897 dev_warn(&adapter->dev,
898 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
902 mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
906 mt9m111->client = client;
907 i2c_set_clientdata(client, mt9m111);
909 /* Second stage probe - when a capture adapter is there */
911 icd->ops = &mt9m111_ops;
912 icd->control = &client->dev;
913 icd->x_min = MT9M111_MIN_DARK_COLS;
914 icd->y_min = MT9M111_MIN_DARK_ROWS;
915 icd->x_current = icd->x_min;
916 icd->y_current = icd->y_min;
917 icd->width_min = MT9M111_MIN_DARK_ROWS;
918 icd->width_max = MT9M111_MAX_WIDTH;
919 icd->height_min = MT9M111_MIN_DARK_COLS;
920 icd->height_max = MT9M111_MAX_HEIGHT;
922 icd->iface = icl->bus_id;
924 ret = soc_camera_device_register(icd);
934 static int mt9m111_remove(struct i2c_client *client)
936 struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
937 soc_camera_device_unregister(&mt9m111->icd);
943 static const struct i2c_device_id mt9m111_id[] = {
947 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
949 static struct i2c_driver mt9m111_i2c_driver = {
953 .probe = mt9m111_probe,
954 .remove = mt9m111_remove,
955 .id_table = mt9m111_id,
958 static int __init mt9m111_mod_init(void)
960 return i2c_add_driver(&mt9m111_i2c_driver);
963 static void __exit mt9m111_mod_exit(void)
965 i2c_del_driver(&mt9m111_i2c_driver);
968 module_init(mt9m111_mod_init);
969 module_exit(mt9m111_mod_exit);
971 MODULE_DESCRIPTION("Micron MT9M111 Camera driver");
972 MODULE_AUTHOR("Robert Jarzmik");
973 MODULE_LICENSE("GPL");