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(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(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
= mt9m111_set_fmt
,
601 .try_fmt
= mt9m111_try_fmt
,
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");