4 * Copyright (C) 2008 Renesas Solutions Corp.
5 * Kuninori Morimoto <morimoto.kuninori@renesas.com>
7 * Based on ov7670 and soc_camera_platform driver,
9 * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
10 * Copyright (C) 2008 Magnus Damm
11 * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
18 #include <linux/init.h>
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/i2c.h>
22 #include <linux/slab.h>
23 #include <linux/delay.h>
24 #include <linux/v4l2-mediabus.h>
25 #include <linux/videodev2.h>
27 #include <media/i2c/ov772x.h>
28 #include <media/soc_camera.h>
29 #include <media/v4l2-clk.h>
30 #include <media/v4l2-ctrls.h>
31 #include <media/v4l2-subdev.h>
32 #include <media/v4l2-image-sizes.h>
37 #define GAIN 0x00 /* AGC - Gain control gain setting */
38 #define BLUE 0x01 /* AWB - Blue channel gain setting */
39 #define RED 0x02 /* AWB - Red channel gain setting */
40 #define GREEN 0x03 /* AWB - Green channel gain setting */
41 #define COM1 0x04 /* Common control 1 */
42 #define BAVG 0x05 /* U/B Average Level */
43 #define GAVG 0x06 /* Y/Gb Average Level */
44 #define RAVG 0x07 /* V/R Average Level */
45 #define AECH 0x08 /* Exposure Value - AEC MSBs */
46 #define COM2 0x09 /* Common control 2 */
47 #define PID 0x0A /* Product ID Number MSB */
48 #define VER 0x0B /* Product ID Number LSB */
49 #define COM3 0x0C /* Common control 3 */
50 #define COM4 0x0D /* Common control 4 */
51 #define COM5 0x0E /* Common control 5 */
52 #define COM6 0x0F /* Common control 6 */
53 #define AEC 0x10 /* Exposure Value */
54 #define CLKRC 0x11 /* Internal clock */
55 #define COM7 0x12 /* Common control 7 */
56 #define COM8 0x13 /* Common control 8 */
57 #define COM9 0x14 /* Common control 9 */
58 #define COM10 0x15 /* Common control 10 */
59 #define REG16 0x16 /* Register 16 */
60 #define HSTART 0x17 /* Horizontal sensor size */
61 #define HSIZE 0x18 /* Horizontal frame (HREF column) end high 8-bit */
62 #define VSTART 0x19 /* Vertical frame (row) start high 8-bit */
63 #define VSIZE 0x1A /* Vertical sensor size */
64 #define PSHFT 0x1B /* Data format - pixel delay select */
65 #define MIDH 0x1C /* Manufacturer ID byte - high */
66 #define MIDL 0x1D /* Manufacturer ID byte - low */
67 #define LAEC 0x1F /* Fine AEC value */
68 #define COM11 0x20 /* Common control 11 */
69 #define BDBASE 0x22 /* Banding filter Minimum AEC value */
70 #define DBSTEP 0x23 /* Banding filter Maximum Setp */
71 #define AEW 0x24 /* AGC/AEC - Stable operating region (upper limit) */
72 #define AEB 0x25 /* AGC/AEC - Stable operating region (lower limit) */
73 #define VPT 0x26 /* AGC/AEC Fast mode operating region */
74 #define REG28 0x28 /* Register 28 */
75 #define HOUTSIZE 0x29 /* Horizontal data output size MSBs */
76 #define EXHCH 0x2A /* Dummy pixel insert MSB */
77 #define EXHCL 0x2B /* Dummy pixel insert LSB */
78 #define VOUTSIZE 0x2C /* Vertical data output size MSBs */
79 #define ADVFL 0x2D /* LSB of insert dummy lines in Vertical direction */
80 #define ADVFH 0x2E /* MSG of insert dummy lines in Vertical direction */
81 #define YAVE 0x2F /* Y/G Channel Average value */
82 #define LUMHTH 0x30 /* Histogram AEC/AGC Luminance high level threshold */
83 #define LUMLTH 0x31 /* Histogram AEC/AGC Luminance low level threshold */
84 #define HREF 0x32 /* Image start and size control */
85 #define DM_LNL 0x33 /* Dummy line low 8 bits */
86 #define DM_LNH 0x34 /* Dummy line high 8 bits */
87 #define ADOFF_B 0x35 /* AD offset compensation value for B channel */
88 #define ADOFF_R 0x36 /* AD offset compensation value for R channel */
89 #define ADOFF_GB 0x37 /* AD offset compensation value for Gb channel */
90 #define ADOFF_GR 0x38 /* AD offset compensation value for Gr channel */
91 #define OFF_B 0x39 /* Analog process B channel offset value */
92 #define OFF_R 0x3A /* Analog process R channel offset value */
93 #define OFF_GB 0x3B /* Analog process Gb channel offset value */
94 #define OFF_GR 0x3C /* Analog process Gr channel offset value */
95 #define COM12 0x3D /* Common control 12 */
96 #define COM13 0x3E /* Common control 13 */
97 #define COM14 0x3F /* Common control 14 */
98 #define COM15 0x40 /* Common control 15*/
99 #define COM16 0x41 /* Common control 16 */
100 #define TGT_B 0x42 /* BLC blue channel target value */
101 #define TGT_R 0x43 /* BLC red channel target value */
102 #define TGT_GB 0x44 /* BLC Gb channel target value */
103 #define TGT_GR 0x45 /* BLC Gr channel target value */
105 #define LCC0 0x46 /* Lens correction control 0 */
106 #define LCC1 0x47 /* Lens correction option 1 - X coordinate */
107 #define LCC2 0x48 /* Lens correction option 2 - Y coordinate */
108 #define LCC3 0x49 /* Lens correction option 3 */
109 #define LCC4 0x4A /* Lens correction option 4 - radius of the circular */
110 #define LCC5 0x4B /* Lens correction option 5 */
111 #define LCC6 0x4C /* Lens correction option 6 */
113 #define LC_CTR 0x46 /* Lens correction control */
114 #define LC_XC 0x47 /* X coordinate of lens correction center relative */
115 #define LC_YC 0x48 /* Y coordinate of lens correction center relative */
116 #define LC_COEF 0x49 /* Lens correction coefficient */
117 #define LC_RADI 0x4A /* Lens correction radius */
118 #define LC_COEFB 0x4B /* Lens B channel compensation coefficient */
119 #define LC_COEFR 0x4C /* Lens R channel compensation coefficient */
121 #define FIXGAIN 0x4D /* Analog fix gain amplifer */
122 #define AREF0 0x4E /* Sensor reference control */
123 #define AREF1 0x4F /* Sensor reference current control */
124 #define AREF2 0x50 /* Analog reference control */
125 #define AREF3 0x51 /* ADC reference control */
126 #define AREF4 0x52 /* ADC reference control */
127 #define AREF5 0x53 /* ADC reference control */
128 #define AREF6 0x54 /* Analog reference control */
129 #define AREF7 0x55 /* Analog reference control */
130 #define UFIX 0x60 /* U channel fixed value output */
131 #define VFIX 0x61 /* V channel fixed value output */
132 #define AWBB_BLK 0x62 /* AWB option for advanced AWB */
133 #define AWB_CTRL0 0x63 /* AWB control byte 0 */
134 #define DSP_CTRL1 0x64 /* DSP control byte 1 */
135 #define DSP_CTRL2 0x65 /* DSP control byte 2 */
136 #define DSP_CTRL3 0x66 /* DSP control byte 3 */
137 #define DSP_CTRL4 0x67 /* DSP control byte 4 */
138 #define AWB_BIAS 0x68 /* AWB BLC level clip */
139 #define AWB_CTRL1 0x69 /* AWB control 1 */
140 #define AWB_CTRL2 0x6A /* AWB control 2 */
141 #define AWB_CTRL3 0x6B /* AWB control 3 */
142 #define AWB_CTRL4 0x6C /* AWB control 4 */
143 #define AWB_CTRL5 0x6D /* AWB control 5 */
144 #define AWB_CTRL6 0x6E /* AWB control 6 */
145 #define AWB_CTRL7 0x6F /* AWB control 7 */
146 #define AWB_CTRL8 0x70 /* AWB control 8 */
147 #define AWB_CTRL9 0x71 /* AWB control 9 */
148 #define AWB_CTRL10 0x72 /* AWB control 10 */
149 #define AWB_CTRL11 0x73 /* AWB control 11 */
150 #define AWB_CTRL12 0x74 /* AWB control 12 */
151 #define AWB_CTRL13 0x75 /* AWB control 13 */
152 #define AWB_CTRL14 0x76 /* AWB control 14 */
153 #define AWB_CTRL15 0x77 /* AWB control 15 */
154 #define AWB_CTRL16 0x78 /* AWB control 16 */
155 #define AWB_CTRL17 0x79 /* AWB control 17 */
156 #define AWB_CTRL18 0x7A /* AWB control 18 */
157 #define AWB_CTRL19 0x7B /* AWB control 19 */
158 #define AWB_CTRL20 0x7C /* AWB control 20 */
159 #define AWB_CTRL21 0x7D /* AWB control 21 */
160 #define GAM1 0x7E /* Gamma Curve 1st segment input end point */
161 #define GAM2 0x7F /* Gamma Curve 2nd segment input end point */
162 #define GAM3 0x80 /* Gamma Curve 3rd segment input end point */
163 #define GAM4 0x81 /* Gamma Curve 4th segment input end point */
164 #define GAM5 0x82 /* Gamma Curve 5th segment input end point */
165 #define GAM6 0x83 /* Gamma Curve 6th segment input end point */
166 #define GAM7 0x84 /* Gamma Curve 7th segment input end point */
167 #define GAM8 0x85 /* Gamma Curve 8th segment input end point */
168 #define GAM9 0x86 /* Gamma Curve 9th segment input end point */
169 #define GAM10 0x87 /* Gamma Curve 10th segment input end point */
170 #define GAM11 0x88 /* Gamma Curve 11th segment input end point */
171 #define GAM12 0x89 /* Gamma Curve 12th segment input end point */
172 #define GAM13 0x8A /* Gamma Curve 13th segment input end point */
173 #define GAM14 0x8B /* Gamma Curve 14th segment input end point */
174 #define GAM15 0x8C /* Gamma Curve 15th segment input end point */
175 #define SLOP 0x8D /* Gamma curve highest segment slope */
176 #define DNSTH 0x8E /* De-noise threshold */
177 #define EDGE_STRNGT 0x8F /* Edge strength control when manual mode */
178 #define EDGE_TRSHLD 0x90 /* Edge threshold control when manual mode */
179 #define DNSOFF 0x91 /* Auto De-noise threshold control */
180 #define EDGE_UPPER 0x92 /* Edge strength upper limit when Auto mode */
181 #define EDGE_LOWER 0x93 /* Edge strength lower limit when Auto mode */
182 #define MTX1 0x94 /* Matrix coefficient 1 */
183 #define MTX2 0x95 /* Matrix coefficient 2 */
184 #define MTX3 0x96 /* Matrix coefficient 3 */
185 #define MTX4 0x97 /* Matrix coefficient 4 */
186 #define MTX5 0x98 /* Matrix coefficient 5 */
187 #define MTX6 0x99 /* Matrix coefficient 6 */
188 #define MTX_CTRL 0x9A /* Matrix control */
189 #define BRIGHT 0x9B /* Brightness control */
190 #define CNTRST 0x9C /* Contrast contrast */
191 #define CNTRST_CTRL 0x9D /* Contrast contrast center */
192 #define UVAD_J0 0x9E /* Auto UV adjust contrast 0 */
193 #define UVAD_J1 0x9F /* Auto UV adjust contrast 1 */
194 #define SCAL0 0xA0 /* Scaling control 0 */
195 #define SCAL1 0xA1 /* Scaling control 1 */
196 #define SCAL2 0xA2 /* Scaling control 2 */
197 #define FIFODLYM 0xA3 /* FIFO manual mode delay control */
198 #define FIFODLYA 0xA4 /* FIFO auto mode delay control */
199 #define SDE 0xA6 /* Special digital effect control */
200 #define USAT 0xA7 /* U component saturation control */
201 #define VSAT 0xA8 /* V component saturation control */
203 #define HUE0 0xA9 /* Hue control 0 */
204 #define HUE1 0xAA /* Hue control 1 */
206 #define HUECOS 0xA9 /* Cosine value */
207 #define HUESIN 0xAA /* Sine value */
209 #define SIGN 0xAB /* Sign bit for Hue and contrast */
210 #define DSPAUTO 0xAC /* DSP auto function ON/OFF control */
217 #define SOFT_SLEEP_MODE 0x10 /* Soft sleep mode */
218 /* Output drive capability */
219 #define OCAP_1x 0x00 /* 1x */
220 #define OCAP_2x 0x01 /* 2x */
221 #define OCAP_3x 0x02 /* 3x */
222 #define OCAP_4x 0x03 /* 4x */
225 #define SWAP_MASK (SWAP_RGB | SWAP_YUV | SWAP_ML)
226 #define IMG_MASK (VFLIP_IMG | HFLIP_IMG)
228 #define VFLIP_IMG 0x80 /* Vertical flip image ON/OFF selection */
229 #define HFLIP_IMG 0x40 /* Horizontal mirror image ON/OFF selection */
230 #define SWAP_RGB 0x20 /* Swap B/R output sequence in RGB mode */
231 #define SWAP_YUV 0x10 /* Swap Y/UV output sequence in YUV mode */
232 #define SWAP_ML 0x08 /* Swap output MSB/LSB */
233 /* Tri-state option for output clock */
234 #define NOTRI_CLOCK 0x04 /* 0: Tri-state at this period */
235 /* 1: No tri-state at this period */
236 /* Tri-state option for output data */
237 #define NOTRI_DATA 0x02 /* 0: Tri-state at this period */
238 /* 1: No tri-state at this period */
239 #define SCOLOR_TEST 0x01 /* Sensor color bar test pattern */
242 /* PLL frequency control */
243 #define PLL_BYPASS 0x00 /* 00: Bypass PLL */
244 #define PLL_4x 0x40 /* 01: PLL 4x */
245 #define PLL_6x 0x80 /* 10: PLL 6x */
246 #define PLL_8x 0xc0 /* 11: PLL 8x */
247 /* AEC evaluate window */
248 #define AEC_FULL 0x00 /* 00: Full window */
249 #define AEC_1p2 0x10 /* 01: 1/2 window */
250 #define AEC_1p4 0x20 /* 10: 1/4 window */
251 #define AEC_2p3 0x30 /* 11: Low 2/3 window */
254 #define AFR_ON_OFF 0x80 /* Auto frame rate control ON/OFF selection */
255 #define AFR_SPPED 0x40 /* Auto frame rate control speed selection */
256 /* Auto frame rate max rate control */
257 #define AFR_NO_RATE 0x00 /* No reduction of frame rate */
258 #define AFR_1p2 0x10 /* Max reduction to 1/2 frame rate */
259 #define AFR_1p4 0x20 /* Max reduction to 1/4 frame rate */
260 #define AFR_1p8 0x30 /* Max reduction to 1/8 frame rate */
261 /* Auto frame rate active point control */
262 #define AF_2x 0x00 /* Add frame when AGC reaches 2x gain */
263 #define AF_4x 0x04 /* Add frame when AGC reaches 4x gain */
264 #define AF_8x 0x08 /* Add frame when AGC reaches 8x gain */
265 #define AF_16x 0x0c /* Add frame when AGC reaches 16x gain */
266 /* AEC max step control */
267 #define AEC_NO_LIMIT 0x01 /* 0 : AEC incease step has limit */
268 /* 1 : No limit to AEC increase step */
271 /* SCCB Register Reset */
272 #define SCCB_RESET 0x80 /* 0 : No change */
273 /* 1 : Resets all registers to default */
274 /* Resolution selection */
275 #define SLCT_MASK 0x40 /* Mask of VGA or QVGA */
276 #define SLCT_VGA 0x00 /* 0 : VGA */
277 #define SLCT_QVGA 0x40 /* 1 : QVGA */
278 #define ITU656_ON_OFF 0x20 /* ITU656 protocol ON/OFF selection */
279 #define SENSOR_RAW 0x10 /* Sensor RAW */
280 /* RGB output format control */
281 #define FMT_MASK 0x0c /* Mask of color format */
282 #define FMT_GBR422 0x00 /* 00 : GBR 4:2:2 */
283 #define FMT_RGB565 0x04 /* 01 : RGB 565 */
284 #define FMT_RGB555 0x08 /* 10 : RGB 555 */
285 #define FMT_RGB444 0x0c /* 11 : RGB 444 */
286 /* Output format control */
287 #define OFMT_MASK 0x03 /* Mask of output format */
288 #define OFMT_YUV 0x00 /* 00 : YUV */
289 #define OFMT_P_BRAW 0x01 /* 01 : Processed Bayer RAW */
290 #define OFMT_RGB 0x02 /* 10 : RGB */
291 #define OFMT_BRAW 0x03 /* 11 : Bayer RAW */
294 #define FAST_ALGO 0x80 /* Enable fast AGC/AEC algorithm */
295 /* AEC Setp size limit */
296 #define UNLMT_STEP 0x40 /* 0 : Step size is limited */
297 /* 1 : Unlimited step size */
298 #define BNDF_ON_OFF 0x20 /* Banding filter ON/OFF */
299 #define AEC_BND 0x10 /* Enable AEC below banding value */
300 #define AEC_ON_OFF 0x08 /* Fine AEC ON/OFF control */
301 #define AGC_ON 0x04 /* AGC Enable */
302 #define AWB_ON 0x02 /* AWB Enable */
303 #define AEC_ON 0x01 /* AEC Enable */
306 #define BASE_AECAGC 0x80 /* Histogram or average based AEC/AGC */
307 /* Automatic gain ceiling - maximum AGC value */
308 #define GAIN_2x 0x00 /* 000 : 2x */
309 #define GAIN_4x 0x10 /* 001 : 4x */
310 #define GAIN_8x 0x20 /* 010 : 8x */
311 #define GAIN_16x 0x30 /* 011 : 16x */
312 #define GAIN_32x 0x40 /* 100 : 32x */
313 #define GAIN_64x 0x50 /* 101 : 64x */
314 #define GAIN_128x 0x60 /* 110 : 128x */
315 #define DROP_VSYNC 0x04 /* Drop VSYNC output of corrupt frame */
316 #define DROP_HREF 0x02 /* Drop HREF output of corrupt frame */
319 #define SGLF_ON_OFF 0x02 /* Single frame ON/OFF selection */
320 #define SGLF_TRIG 0x01 /* Single frame transfer trigger */
323 #define HREF_VSTART_SHIFT 6 /* VSTART LSB */
324 #define HREF_HSTART_SHIFT 4 /* HSTART 2 LSBs */
325 #define HREF_VSIZE_SHIFT 2 /* VSIZE LSB */
326 #define HREF_HSIZE_SHIFT 0 /* HSIZE 2 LSBs */
329 #define EXHCH_VSIZE_SHIFT 2 /* VOUTSIZE LSB */
330 #define EXHCH_HSIZE_SHIFT 0 /* HOUTSIZE 2 LSBs */
333 #define FIFO_ON 0x80 /* FIFO enable/disable selection */
334 #define UV_ON_OFF 0x40 /* UV adjust function ON/OFF selection */
335 #define YUV444_2_422 0x20 /* YUV444 to 422 UV channel option selection */
336 #define CLR_MTRX_ON_OFF 0x10 /* Color matrix ON/OFF selection */
337 #define INTPLT_ON_OFF 0x08 /* Interpolation ON/OFF selection */
338 #define GMM_ON_OFF 0x04 /* Gamma function ON/OFF selection */
339 #define AUTO_BLK_ON_OFF 0x02 /* Black defect auto correction ON/OFF */
340 #define AUTO_WHT_ON_OFF 0x01 /* White define auto correction ON/OFF */
343 #define UV_MASK 0x80 /* UV output sequence option */
344 #define UV_ON 0x80 /* ON */
345 #define UV_OFF 0x00 /* OFF */
346 #define CBAR_MASK 0x20 /* DSP Color bar mask */
347 #define CBAR_ON 0x20 /* ON */
348 #define CBAR_OFF 0x00 /* OFF */
351 #define DSP_OFMT_YUV 0x00
352 #define DSP_OFMT_RGB 0x00
353 #define DSP_OFMT_RAW8 0x02
354 #define DSP_OFMT_RAW10 0x03
356 /* DSPAUTO (DSP Auto Function ON/OFF Control) */
357 #define AWB_ACTRL 0x80 /* AWB auto threshold control */
358 #define DENOISE_ACTRL 0x40 /* De-noise auto threshold control */
359 #define EDGE_ACTRL 0x20 /* Edge enhancement auto strength control */
360 #define UV_ACTRL 0x10 /* UV adjust auto slope control */
361 #define SCAL0_ACTRL 0x08 /* Auto scaling factor control */
362 #define SCAL1_2_ACTRL 0x04 /* Auto scaling factor control */
364 #define OV772X_MAX_WIDTH VGA_WIDTH
365 #define OV772X_MAX_HEIGHT VGA_HEIGHT
370 #define OV7720 0x7720
371 #define OV7725 0x7721
372 #define VERSION(pid, ver) ((pid<<8)|(ver&0xFF))
378 struct ov772x_color_format
{
380 enum v4l2_colorspace colorspace
;
387 struct ov772x_win_size
{
389 unsigned char com7_bit
;
390 struct v4l2_rect rect
;
394 struct v4l2_subdev subdev
;
395 struct v4l2_ctrl_handler hdl
;
396 struct v4l2_clk
*clk
;
397 struct ov772x_camera_info
*info
;
398 const struct ov772x_color_format
*cfmt
;
399 const struct ov772x_win_size
*win
;
400 unsigned short flag_vflip
:1;
401 unsigned short flag_hflip
:1;
402 /* band_filter = COM8[5] ? 256 - BDBASE : 0 */
403 unsigned short band_filter
;
407 * supported color format list
409 static const struct ov772x_color_format ov772x_cfmts
[] = {
411 .code
= MEDIA_BUS_FMT_YUYV8_2X8
,
412 .colorspace
= V4L2_COLORSPACE_JPEG
,
414 .dsp4
= DSP_OFMT_YUV
,
419 .code
= MEDIA_BUS_FMT_YVYU8_2X8
,
420 .colorspace
= V4L2_COLORSPACE_JPEG
,
422 .dsp4
= DSP_OFMT_YUV
,
427 .code
= MEDIA_BUS_FMT_UYVY8_2X8
,
428 .colorspace
= V4L2_COLORSPACE_JPEG
,
430 .dsp4
= DSP_OFMT_YUV
,
435 .code
= MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE
,
436 .colorspace
= V4L2_COLORSPACE_SRGB
,
438 .dsp4
= DSP_OFMT_YUV
,
440 .com7
= FMT_RGB555
| OFMT_RGB
,
443 .code
= MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE
,
444 .colorspace
= V4L2_COLORSPACE_SRGB
,
446 .dsp4
= DSP_OFMT_YUV
,
448 .com7
= FMT_RGB555
| OFMT_RGB
,
451 .code
= MEDIA_BUS_FMT_RGB565_2X8_LE
,
452 .colorspace
= V4L2_COLORSPACE_SRGB
,
454 .dsp4
= DSP_OFMT_YUV
,
456 .com7
= FMT_RGB565
| OFMT_RGB
,
459 .code
= MEDIA_BUS_FMT_RGB565_2X8_BE
,
460 .colorspace
= V4L2_COLORSPACE_SRGB
,
462 .dsp4
= DSP_OFMT_YUV
,
464 .com7
= FMT_RGB565
| OFMT_RGB
,
467 /* Setting DSP4 to DSP_OFMT_RAW8 still gives 10-bit output,
468 * regardless of the COM7 value. We can thus only support 10-bit
469 * Bayer until someone figures it out.
471 .code
= MEDIA_BUS_FMT_SBGGR10_1X10
,
472 .colorspace
= V4L2_COLORSPACE_SRGB
,
474 .dsp4
= DSP_OFMT_RAW10
,
476 .com7
= SENSOR_RAW
| OFMT_BRAW
,
485 static const struct ov772x_win_size ov772x_win_sizes
[] = {
488 .com7_bit
= SLCT_VGA
,
493 .height
= VGA_HEIGHT
,
497 .com7_bit
= SLCT_QVGA
,
502 .height
= QVGA_HEIGHT
,
511 static struct ov772x_priv
*to_ov772x(struct v4l2_subdev
*sd
)
513 return container_of(sd
, struct ov772x_priv
, subdev
);
516 static inline int ov772x_read(struct i2c_client
*client
, u8 addr
)
518 return i2c_smbus_read_byte_data(client
, addr
);
521 static inline int ov772x_write(struct i2c_client
*client
, u8 addr
, u8 value
)
523 return i2c_smbus_write_byte_data(client
, addr
, value
);
526 static int ov772x_mask_set(struct i2c_client
*client
, u8 command
, u8 mask
,
529 s32 val
= ov772x_read(client
, command
);
536 return ov772x_write(client
, command
, val
);
539 static int ov772x_reset(struct i2c_client
*client
)
543 ret
= ov772x_write(client
, COM7
, SCCB_RESET
);
549 return ov772x_mask_set(client
, COM2
, SOFT_SLEEP_MODE
, SOFT_SLEEP_MODE
);
553 * soc_camera_ops function
556 static int ov772x_s_stream(struct v4l2_subdev
*sd
, int enable
)
558 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
559 struct ov772x_priv
*priv
= to_ov772x(sd
);
562 ov772x_mask_set(client
, COM2
, SOFT_SLEEP_MODE
, SOFT_SLEEP_MODE
);
566 ov772x_mask_set(client
, COM2
, SOFT_SLEEP_MODE
, 0);
568 dev_dbg(&client
->dev
, "format %d, win %s\n",
569 priv
->cfmt
->code
, priv
->win
->name
);
574 static int ov772x_s_ctrl(struct v4l2_ctrl
*ctrl
)
576 struct ov772x_priv
*priv
= container_of(ctrl
->handler
,
577 struct ov772x_priv
, hdl
);
578 struct v4l2_subdev
*sd
= &priv
->subdev
;
579 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
585 val
= ctrl
->val
? VFLIP_IMG
: 0x00;
586 priv
->flag_vflip
= ctrl
->val
;
587 if (priv
->info
->flags
& OV772X_FLAG_VFLIP
)
589 return ov772x_mask_set(client
, COM3
, VFLIP_IMG
, val
);
591 val
= ctrl
->val
? HFLIP_IMG
: 0x00;
592 priv
->flag_hflip
= ctrl
->val
;
593 if (priv
->info
->flags
& OV772X_FLAG_HFLIP
)
595 return ov772x_mask_set(client
, COM3
, HFLIP_IMG
, val
);
596 case V4L2_CID_BAND_STOP_FILTER
:
598 /* Switch the filter off, it is on now */
599 ret
= ov772x_mask_set(client
, BDBASE
, 0xff, 0xff);
601 ret
= ov772x_mask_set(client
, COM8
,
604 /* Switch the filter on, set AEC low limit */
605 val
= 256 - ctrl
->val
;
606 ret
= ov772x_mask_set(client
, COM8
,
607 BNDF_ON_OFF
, BNDF_ON_OFF
);
609 ret
= ov772x_mask_set(client
, BDBASE
,
613 priv
->band_filter
= ctrl
->val
;
620 #ifdef CONFIG_VIDEO_ADV_DEBUG
621 static int ov772x_g_register(struct v4l2_subdev
*sd
,
622 struct v4l2_dbg_register
*reg
)
624 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
631 ret
= ov772x_read(client
, reg
->reg
);
635 reg
->val
= (__u64
)ret
;
640 static int ov772x_s_register(struct v4l2_subdev
*sd
,
641 const struct v4l2_dbg_register
*reg
)
643 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
645 if (reg
->reg
> 0xff ||
649 return ov772x_write(client
, reg
->reg
, reg
->val
);
653 static int ov772x_s_power(struct v4l2_subdev
*sd
, int on
)
655 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
656 struct soc_camera_subdev_desc
*ssdd
= soc_camera_i2c_to_desc(client
);
657 struct ov772x_priv
*priv
= to_ov772x(sd
);
659 return soc_camera_set_power(&client
->dev
, ssdd
, priv
->clk
, on
);
662 static const struct ov772x_win_size
*ov772x_select_win(u32 width
, u32 height
)
664 const struct ov772x_win_size
*win
= &ov772x_win_sizes
[0];
665 u32 best_diff
= UINT_MAX
;
668 for (i
= 0; i
< ARRAY_SIZE(ov772x_win_sizes
); ++i
) {
669 u32 diff
= abs(width
- ov772x_win_sizes
[i
].rect
.width
)
670 + abs(height
- ov772x_win_sizes
[i
].rect
.height
);
671 if (diff
< best_diff
) {
673 win
= &ov772x_win_sizes
[i
];
680 static void ov772x_select_params(const struct v4l2_mbus_framefmt
*mf
,
681 const struct ov772x_color_format
**cfmt
,
682 const struct ov772x_win_size
**win
)
686 /* Select a format. */
687 *cfmt
= &ov772x_cfmts
[0];
689 for (i
= 0; i
< ARRAY_SIZE(ov772x_cfmts
); i
++) {
690 if (mf
->code
== ov772x_cfmts
[i
].code
) {
691 *cfmt
= &ov772x_cfmts
[i
];
696 /* Select a window size. */
697 *win
= ov772x_select_win(mf
->width
, mf
->height
);
700 static int ov772x_set_params(struct ov772x_priv
*priv
,
701 const struct ov772x_color_format
*cfmt
,
702 const struct ov772x_win_size
*win
)
704 struct i2c_client
*client
= v4l2_get_subdevdata(&priv
->subdev
);
711 ov772x_reset(client
);
716 if (priv
->info
->edgectrl
.strength
& OV772X_MANUAL_EDGE_CTRL
) {
719 * Manual Edge Control Mode
721 * Edge auto strength bit is set by default.
722 * Remove it when manual mode.
725 ret
= ov772x_mask_set(client
, DSPAUTO
, EDGE_ACTRL
, 0x00);
727 goto ov772x_set_fmt_error
;
729 ret
= ov772x_mask_set(client
,
730 EDGE_TRSHLD
, OV772X_EDGE_THRESHOLD_MASK
,
731 priv
->info
->edgectrl
.threshold
);
733 goto ov772x_set_fmt_error
;
735 ret
= ov772x_mask_set(client
,
736 EDGE_STRNGT
, OV772X_EDGE_STRENGTH_MASK
,
737 priv
->info
->edgectrl
.strength
);
739 goto ov772x_set_fmt_error
;
741 } else if (priv
->info
->edgectrl
.upper
> priv
->info
->edgectrl
.lower
) {
743 * Auto Edge Control Mode
745 * set upper and lower limit
747 ret
= ov772x_mask_set(client
,
748 EDGE_UPPER
, OV772X_EDGE_UPPER_MASK
,
749 priv
->info
->edgectrl
.upper
);
751 goto ov772x_set_fmt_error
;
753 ret
= ov772x_mask_set(client
,
754 EDGE_LOWER
, OV772X_EDGE_LOWER_MASK
,
755 priv
->info
->edgectrl
.lower
);
757 goto ov772x_set_fmt_error
;
760 /* Format and window size */
761 ret
= ov772x_write(client
, HSTART
, win
->rect
.left
>> 2);
763 goto ov772x_set_fmt_error
;
764 ret
= ov772x_write(client
, HSIZE
, win
->rect
.width
>> 2);
766 goto ov772x_set_fmt_error
;
767 ret
= ov772x_write(client
, VSTART
, win
->rect
.top
>> 1);
769 goto ov772x_set_fmt_error
;
770 ret
= ov772x_write(client
, VSIZE
, win
->rect
.height
>> 1);
772 goto ov772x_set_fmt_error
;
773 ret
= ov772x_write(client
, HOUTSIZE
, win
->rect
.width
>> 2);
775 goto ov772x_set_fmt_error
;
776 ret
= ov772x_write(client
, VOUTSIZE
, win
->rect
.height
>> 1);
778 goto ov772x_set_fmt_error
;
779 ret
= ov772x_write(client
, HREF
,
780 ((win
->rect
.top
& 1) << HREF_VSTART_SHIFT
) |
781 ((win
->rect
.left
& 3) << HREF_HSTART_SHIFT
) |
782 ((win
->rect
.height
& 1) << HREF_VSIZE_SHIFT
) |
783 ((win
->rect
.width
& 3) << HREF_HSIZE_SHIFT
));
785 goto ov772x_set_fmt_error
;
786 ret
= ov772x_write(client
, EXHCH
,
787 ((win
->rect
.height
& 1) << EXHCH_VSIZE_SHIFT
) |
788 ((win
->rect
.width
& 3) << EXHCH_HSIZE_SHIFT
));
790 goto ov772x_set_fmt_error
;
797 ret
= ov772x_mask_set(client
,
798 DSP_CTRL3
, UV_MASK
, val
);
800 goto ov772x_set_fmt_error
;
803 /* DSP_CTRL4: AEC reference point and DSP output format. */
805 ret
= ov772x_write(client
, DSP_CTRL4
, cfmt
->dsp4
);
807 goto ov772x_set_fmt_error
;
814 if (priv
->info
->flags
& OV772X_FLAG_VFLIP
)
816 if (priv
->info
->flags
& OV772X_FLAG_HFLIP
)
818 if (priv
->flag_vflip
)
820 if (priv
->flag_hflip
)
823 ret
= ov772x_mask_set(client
,
824 COM3
, SWAP_MASK
| IMG_MASK
, val
);
826 goto ov772x_set_fmt_error
;
828 /* COM7: Sensor resolution and output format control. */
829 ret
= ov772x_write(client
, COM7
, win
->com7_bit
| cfmt
->com7
);
831 goto ov772x_set_fmt_error
;
836 if (priv
->band_filter
) {
837 ret
= ov772x_mask_set(client
, COM8
, BNDF_ON_OFF
, 1);
839 ret
= ov772x_mask_set(client
, BDBASE
,
840 0xff, 256 - priv
->band_filter
);
842 goto ov772x_set_fmt_error
;
847 ov772x_set_fmt_error
:
849 ov772x_reset(client
);
854 static int ov772x_get_selection(struct v4l2_subdev
*sd
,
855 struct v4l2_subdev_pad_config
*cfg
,
856 struct v4l2_subdev_selection
*sel
)
858 if (sel
->which
!= V4L2_SUBDEV_FORMAT_ACTIVE
)
863 switch (sel
->target
) {
864 case V4L2_SEL_TGT_CROP_BOUNDS
:
865 case V4L2_SEL_TGT_CROP_DEFAULT
:
866 sel
->r
.width
= OV772X_MAX_WIDTH
;
867 sel
->r
.height
= OV772X_MAX_HEIGHT
;
869 case V4L2_SEL_TGT_CROP
:
870 sel
->r
.width
= VGA_WIDTH
;
871 sel
->r
.height
= VGA_HEIGHT
;
878 static int ov772x_get_fmt(struct v4l2_subdev
*sd
,
879 struct v4l2_subdev_pad_config
*cfg
,
880 struct v4l2_subdev_format
*format
)
882 struct v4l2_mbus_framefmt
*mf
= &format
->format
;
883 struct ov772x_priv
*priv
= to_ov772x(sd
);
888 mf
->width
= priv
->win
->rect
.width
;
889 mf
->height
= priv
->win
->rect
.height
;
890 mf
->code
= priv
->cfmt
->code
;
891 mf
->colorspace
= priv
->cfmt
->colorspace
;
892 mf
->field
= V4L2_FIELD_NONE
;
897 static int ov772x_s_fmt(struct v4l2_subdev
*sd
, struct v4l2_mbus_framefmt
*mf
)
899 struct ov772x_priv
*priv
= to_ov772x(sd
);
900 const struct ov772x_color_format
*cfmt
;
901 const struct ov772x_win_size
*win
;
904 ov772x_select_params(mf
, &cfmt
, &win
);
906 ret
= ov772x_set_params(priv
, cfmt
, win
);
913 mf
->code
= cfmt
->code
;
914 mf
->width
= win
->rect
.width
;
915 mf
->height
= win
->rect
.height
;
916 mf
->field
= V4L2_FIELD_NONE
;
917 mf
->colorspace
= cfmt
->colorspace
;
922 static int ov772x_set_fmt(struct v4l2_subdev
*sd
,
923 struct v4l2_subdev_pad_config
*cfg
,
924 struct v4l2_subdev_format
*format
)
926 struct v4l2_mbus_framefmt
*mf
= &format
->format
;
927 const struct ov772x_color_format
*cfmt
;
928 const struct ov772x_win_size
*win
;
933 ov772x_select_params(mf
, &cfmt
, &win
);
935 mf
->code
= cfmt
->code
;
936 mf
->width
= win
->rect
.width
;
937 mf
->height
= win
->rect
.height
;
938 mf
->field
= V4L2_FIELD_NONE
;
939 mf
->colorspace
= cfmt
->colorspace
;
941 if (format
->which
== V4L2_SUBDEV_FORMAT_ACTIVE
)
942 return ov772x_s_fmt(sd
, mf
);
947 static int ov772x_video_probe(struct ov772x_priv
*priv
)
949 struct i2c_client
*client
= v4l2_get_subdevdata(&priv
->subdev
);
954 ret
= ov772x_s_power(&priv
->subdev
, 1);
959 * check and show product ID and manufacturer ID
961 pid
= ov772x_read(client
, PID
);
962 ver
= ov772x_read(client
, VER
);
964 switch (VERSION(pid
, ver
)) {
972 dev_err(&client
->dev
,
973 "Product ID error %x:%x\n", pid
, ver
);
978 dev_info(&client
->dev
,
979 "%s Product ID %0x:%0x Manufacturer ID %x:%x\n",
983 ov772x_read(client
, MIDH
),
984 ov772x_read(client
, MIDL
));
985 ret
= v4l2_ctrl_handler_setup(&priv
->hdl
);
988 ov772x_s_power(&priv
->subdev
, 0);
992 static const struct v4l2_ctrl_ops ov772x_ctrl_ops
= {
993 .s_ctrl
= ov772x_s_ctrl
,
996 static struct v4l2_subdev_core_ops ov772x_subdev_core_ops
= {
997 #ifdef CONFIG_VIDEO_ADV_DEBUG
998 .g_register
= ov772x_g_register
,
999 .s_register
= ov772x_s_register
,
1001 .s_power
= ov772x_s_power
,
1004 static int ov772x_enum_mbus_code(struct v4l2_subdev
*sd
,
1005 struct v4l2_subdev_pad_config
*cfg
,
1006 struct v4l2_subdev_mbus_code_enum
*code
)
1008 if (code
->pad
|| code
->index
>= ARRAY_SIZE(ov772x_cfmts
))
1011 code
->code
= ov772x_cfmts
[code
->index
].code
;
1015 static int ov772x_g_mbus_config(struct v4l2_subdev
*sd
,
1016 struct v4l2_mbus_config
*cfg
)
1018 struct i2c_client
*client
= v4l2_get_subdevdata(sd
);
1019 struct soc_camera_subdev_desc
*ssdd
= soc_camera_i2c_to_desc(client
);
1021 cfg
->flags
= V4L2_MBUS_PCLK_SAMPLE_RISING
| V4L2_MBUS_MASTER
|
1022 V4L2_MBUS_VSYNC_ACTIVE_HIGH
| V4L2_MBUS_HSYNC_ACTIVE_HIGH
|
1023 V4L2_MBUS_DATA_ACTIVE_HIGH
;
1024 cfg
->type
= V4L2_MBUS_PARALLEL
;
1025 cfg
->flags
= soc_camera_apply_board_flags(ssdd
, cfg
);
1030 static struct v4l2_subdev_video_ops ov772x_subdev_video_ops
= {
1031 .s_stream
= ov772x_s_stream
,
1032 .g_mbus_config
= ov772x_g_mbus_config
,
1035 static const struct v4l2_subdev_pad_ops ov772x_subdev_pad_ops
= {
1036 .enum_mbus_code
= ov772x_enum_mbus_code
,
1037 .get_selection
= ov772x_get_selection
,
1038 .get_fmt
= ov772x_get_fmt
,
1039 .set_fmt
= ov772x_set_fmt
,
1042 static struct v4l2_subdev_ops ov772x_subdev_ops
= {
1043 .core
= &ov772x_subdev_core_ops
,
1044 .video
= &ov772x_subdev_video_ops
,
1045 .pad
= &ov772x_subdev_pad_ops
,
1049 * i2c_driver function
1052 static int ov772x_probe(struct i2c_client
*client
,
1053 const struct i2c_device_id
*did
)
1055 struct ov772x_priv
*priv
;
1056 struct soc_camera_subdev_desc
*ssdd
= soc_camera_i2c_to_desc(client
);
1057 struct i2c_adapter
*adapter
= to_i2c_adapter(client
->dev
.parent
);
1060 if (!ssdd
|| !ssdd
->drv_priv
) {
1061 dev_err(&client
->dev
, "OV772X: missing platform data!\n");
1065 if (!i2c_check_functionality(adapter
, I2C_FUNC_SMBUS_BYTE_DATA
)) {
1066 dev_err(&adapter
->dev
,
1067 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE_DATA\n");
1071 priv
= devm_kzalloc(&client
->dev
, sizeof(*priv
), GFP_KERNEL
);
1075 priv
->info
= ssdd
->drv_priv
;
1077 v4l2_i2c_subdev_init(&priv
->subdev
, client
, &ov772x_subdev_ops
);
1078 v4l2_ctrl_handler_init(&priv
->hdl
, 3);
1079 v4l2_ctrl_new_std(&priv
->hdl
, &ov772x_ctrl_ops
,
1080 V4L2_CID_VFLIP
, 0, 1, 1, 0);
1081 v4l2_ctrl_new_std(&priv
->hdl
, &ov772x_ctrl_ops
,
1082 V4L2_CID_HFLIP
, 0, 1, 1, 0);
1083 v4l2_ctrl_new_std(&priv
->hdl
, &ov772x_ctrl_ops
,
1084 V4L2_CID_BAND_STOP_FILTER
, 0, 256, 1, 0);
1085 priv
->subdev
.ctrl_handler
= &priv
->hdl
;
1086 if (priv
->hdl
.error
)
1087 return priv
->hdl
.error
;
1089 priv
->clk
= v4l2_clk_get(&client
->dev
, "mclk");
1090 if (IS_ERR(priv
->clk
)) {
1091 ret
= PTR_ERR(priv
->clk
);
1095 ret
= ov772x_video_probe(priv
);
1097 v4l2_clk_put(priv
->clk
);
1099 v4l2_ctrl_handler_free(&priv
->hdl
);
1101 priv
->cfmt
= &ov772x_cfmts
[0];
1102 priv
->win
= &ov772x_win_sizes
[0];
1108 static int ov772x_remove(struct i2c_client
*client
)
1110 struct ov772x_priv
*priv
= to_ov772x(i2c_get_clientdata(client
));
1112 v4l2_clk_put(priv
->clk
);
1113 v4l2_device_unregister_subdev(&priv
->subdev
);
1114 v4l2_ctrl_handler_free(&priv
->hdl
);
1118 static const struct i2c_device_id ov772x_id
[] = {
1122 MODULE_DEVICE_TABLE(i2c
, ov772x_id
);
1124 static struct i2c_driver ov772x_i2c_driver
= {
1128 .probe
= ov772x_probe
,
1129 .remove
= ov772x_remove
,
1130 .id_table
= ov772x_id
,
1133 module_i2c_driver(ov772x_i2c_driver
);
1135 MODULE_DESCRIPTION("SoC Camera driver for ov772x");
1136 MODULE_AUTHOR("Kuninori Morimoto");
1137 MODULE_LICENSE("GPL v2");