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84a15ded SN |
1 | /* |
2 | * Omnivision OV9650/OV9652 CMOS Image Sensor driver | |
3 | * | |
4 | * Copyright (C) 2013, Sylwester Nawrocki <sylvester.nawrocki@gmail.com> | |
5 | * | |
6 | * Register definitions and initial settings based on a driver written | |
7 | * by Vladimir Fonov. | |
8 | * Copyright (c) 2010, Vladimir Fonov | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | */ | |
14 | #include <linux/delay.h> | |
15 | #include <linux/gpio.h> | |
16 | #include <linux/i2c.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/media.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/ratelimit.h> | |
21 | #include <linux/slab.h> | |
22 | #include <linux/string.h> | |
23 | #include <linux/videodev2.h> | |
24 | ||
25 | #include <media/media-entity.h> | |
26 | #include <media/v4l2-ctrls.h> | |
27 | #include <media/v4l2-device.h> | |
28 | #include <media/v4l2-event.h> | |
29 | #include <media/v4l2-image-sizes.h> | |
30 | #include <media/v4l2-subdev.h> | |
31 | #include <media/v4l2-mediabus.h> | |
32 | #include <media/ov9650.h> | |
33 | ||
34 | static int debug; | |
35 | module_param(debug, int, 0644); | |
36 | MODULE_PARM_DESC(debug, "Debug level (0-2)"); | |
37 | ||
38 | #define DRIVER_NAME "OV9650" | |
39 | ||
40 | /* | |
41 | * OV9650/OV9652 register definitions | |
42 | */ | |
43 | #define REG_GAIN 0x00 /* Gain control, AGC[7:0] */ | |
44 | #define REG_BLUE 0x01 /* AWB - Blue chanel gain */ | |
45 | #define REG_RED 0x02 /* AWB - Red chanel gain */ | |
46 | #define REG_VREF 0x03 /* [7:6] - AGC[9:8], [5:3]/[2:0] */ | |
47 | #define VREF_GAIN_MASK 0xc0 /* - VREF end/start low 3 bits */ | |
48 | #define REG_COM1 0x04 | |
49 | #define COM1_CCIR656 0x40 | |
50 | #define REG_B_AVE 0x05 | |
51 | #define REG_GB_AVE 0x06 | |
52 | #define REG_GR_AVE 0x07 | |
53 | #define REG_R_AVE 0x08 | |
54 | #define REG_COM2 0x09 | |
55 | #define REG_PID 0x0a /* Product ID MSB */ | |
56 | #define REG_VER 0x0b /* Product ID LSB */ | |
57 | #define REG_COM3 0x0c | |
58 | #define COM3_SWAP 0x40 | |
59 | #define COM3_VARIOPIXEL1 0x04 | |
60 | #define REG_COM4 0x0d /* Vario Pixels */ | |
61 | #define COM4_VARIOPIXEL2 0x80 | |
62 | #define REG_COM5 0x0e /* System clock options */ | |
63 | #define COM5_SLAVE_MODE 0x10 | |
64 | #define COM5_SYSTEMCLOCK48MHZ 0x80 | |
65 | #define REG_COM6 0x0f /* HREF & ADBLC options */ | |
66 | #define REG_AECH 0x10 /* Exposure value, AEC[9:2] */ | |
67 | #define REG_CLKRC 0x11 /* Clock control */ | |
68 | #define CLK_EXT 0x40 /* Use external clock directly */ | |
69 | #define CLK_SCALE 0x3f /* Mask for internal clock scale */ | |
70 | #define REG_COM7 0x12 /* SCCB reset, output format */ | |
71 | #define COM7_RESET 0x80 | |
72 | #define COM7_FMT_MASK 0x38 | |
73 | #define COM7_FMT_VGA 0x40 | |
74 | #define COM7_FMT_CIF 0x20 | |
75 | #define COM7_FMT_QVGA 0x10 | |
76 | #define COM7_FMT_QCIF 0x08 | |
77 | #define COM7_RGB 0x04 | |
78 | #define COM7_YUV 0x00 | |
79 | #define COM7_BAYER 0x01 | |
80 | #define COM7_PBAYER 0x05 | |
81 | #define REG_COM8 0x13 /* AGC/AEC options */ | |
82 | #define COM8_FASTAEC 0x80 /* Enable fast AGC/AEC */ | |
83 | #define COM8_AECSTEP 0x40 /* Unlimited AEC step size */ | |
84 | #define COM8_BFILT 0x20 /* Band filter enable */ | |
85 | #define COM8_AGC 0x04 /* Auto gain enable */ | |
86 | #define COM8_AWB 0x02 /* White balance enable */ | |
87 | #define COM8_AEC 0x01 /* Auto exposure enable */ | |
88 | #define REG_COM9 0x14 /* Gain ceiling */ | |
89 | #define COM9_GAIN_CEIL_MASK 0x70 /* */ | |
90 | #define REG_COM10 0x15 /* PCLK, HREF, HSYNC signals polarity */ | |
91 | #define COM10_HSYNC 0x40 /* HSYNC instead of HREF */ | |
92 | #define COM10_PCLK_HB 0x20 /* Suppress PCLK on horiz blank */ | |
93 | #define COM10_HREF_REV 0x08 /* Reverse HREF */ | |
94 | #define COM10_VS_LEAD 0x04 /* VSYNC on clock leading edge */ | |
95 | #define COM10_VS_NEG 0x02 /* VSYNC negative */ | |
96 | #define COM10_HS_NEG 0x01 /* HSYNC negative */ | |
97 | #define REG_HSTART 0x17 /* Horiz start high bits */ | |
98 | #define REG_HSTOP 0x18 /* Horiz stop high bits */ | |
99 | #define REG_VSTART 0x19 /* Vert start high bits */ | |
100 | #define REG_VSTOP 0x1a /* Vert stop high bits */ | |
101 | #define REG_PSHFT 0x1b /* Pixel delay after HREF */ | |
102 | #define REG_MIDH 0x1c /* Manufacturer ID MSB */ | |
103 | #define REG_MIDL 0x1d /* Manufufacturer ID LSB */ | |
104 | #define REG_MVFP 0x1e /* Image mirror/flip */ | |
105 | #define MVFP_MIRROR 0x20 /* Mirror image */ | |
106 | #define MVFP_FLIP 0x10 /* Vertical flip */ | |
107 | #define REG_BOS 0x20 /* B channel Offset */ | |
108 | #define REG_GBOS 0x21 /* Gb channel Offset */ | |
109 | #define REG_GROS 0x22 /* Gr channel Offset */ | |
110 | #define REG_ROS 0x23 /* R channel Offset */ | |
111 | #define REG_AEW 0x24 /* AGC upper limit */ | |
112 | #define REG_AEB 0x25 /* AGC lower limit */ | |
113 | #define REG_VPT 0x26 /* AGC/AEC fast mode op region */ | |
114 | #define REG_BBIAS 0x27 /* B channel output bias */ | |
115 | #define REG_GBBIAS 0x28 /* Gb channel output bias */ | |
116 | #define REG_GRCOM 0x29 /* Analog BLC & regulator */ | |
117 | #define REG_EXHCH 0x2a /* Dummy pixel insert MSB */ | |
118 | #define REG_EXHCL 0x2b /* Dummy pixel insert LSB */ | |
119 | #define REG_RBIAS 0x2c /* R channel output bias */ | |
120 | #define REG_ADVFL 0x2d /* LSB of dummy line insert */ | |
121 | #define REG_ADVFH 0x2e /* MSB of dummy line insert */ | |
122 | #define REG_YAVE 0x2f /* Y/G channel average value */ | |
123 | #define REG_HSYST 0x30 /* HSYNC rising edge delay LSB*/ | |
124 | #define REG_HSYEN 0x31 /* HSYNC falling edge delay LSB*/ | |
125 | #define REG_HREF 0x32 /* HREF pieces */ | |
126 | #define REG_CHLF 0x33 /* reserved */ | |
127 | #define REG_ADC 0x37 /* reserved */ | |
128 | #define REG_ACOM 0x38 /* reserved */ | |
129 | #define REG_OFON 0x39 /* Power down register */ | |
130 | #define OFON_PWRDN 0x08 /* Power down bit */ | |
131 | #define REG_TSLB 0x3a /* YUVU format */ | |
132 | #define TSLB_YUYV_MASK 0x0c /* UYVY or VYUY - see com13 */ | |
133 | #define REG_COM11 0x3b /* Night mode, banding filter enable */ | |
134 | #define COM11_NIGHT 0x80 /* Night mode enable */ | |
135 | #define COM11_NMFR 0x60 /* Two bit NM frame rate */ | |
136 | #define COM11_BANDING 0x01 /* Banding filter */ | |
137 | #define COM11_AEC_REF_MASK 0x18 /* AEC reference area selection */ | |
138 | #define REG_COM12 0x3c /* HREF option, UV average */ | |
139 | #define COM12_HREF 0x80 /* HREF always */ | |
140 | #define REG_COM13 0x3d /* Gamma selection, Color matrix en. */ | |
141 | #define COM13_GAMMA 0x80 /* Gamma enable */ | |
142 | #define COM13_UVSAT 0x40 /* UV saturation auto adjustment */ | |
143 | #define COM13_UVSWAP 0x01 /* V before U - w/TSLB */ | |
144 | #define REG_COM14 0x3e /* Edge enhancement options */ | |
145 | #define COM14_EDGE_EN 0x02 | |
146 | #define COM14_EEF_X2 0x01 | |
147 | #define REG_EDGE 0x3f /* Edge enhancement factor */ | |
148 | #define EDGE_FACTOR_MASK 0x0f | |
149 | #define REG_COM15 0x40 /* Output range, RGB 555/565 */ | |
150 | #define COM15_R10F0 0x00 /* Data range 10 to F0 */ | |
151 | #define COM15_R01FE 0x80 /* 01 to FE */ | |
152 | #define COM15_R00FF 0xc0 /* 00 to FF */ | |
153 | #define COM15_RGB565 0x10 /* RGB565 output */ | |
154 | #define COM15_RGB555 0x30 /* RGB555 output */ | |
155 | #define COM15_SWAPRB 0x04 /* Swap R&B */ | |
156 | #define REG_COM16 0x41 /* Color matrix coeff options */ | |
157 | #define REG_COM17 0x42 /* Single frame out, banding filter */ | |
158 | /* n = 1...9, 0x4f..0x57 */ | |
159 | #define REG_MTX(__n) (0x4f + (__n) - 1) | |
160 | #define REG_MTXS 0x58 | |
161 | /* Lens Correction Option 1...5, __n = 0...5 */ | |
162 | #define REG_LCC(__n) (0x62 + (__n) - 1) | |
163 | #define LCC5_LCC_ENABLE 0x01 /* LCC5, enable lens correction */ | |
164 | #define LCC5_LCC_COLOR 0x04 | |
165 | #define REG_MANU 0x67 /* Manual U value */ | |
166 | #define REG_MANV 0x68 /* Manual V value */ | |
167 | #define REG_HV 0x69 /* Manual banding filter MSB */ | |
168 | #define REG_MBD 0x6a /* Manual banding filter value */ | |
169 | #define REG_DBLV 0x6b /* reserved */ | |
170 | #define REG_GSP 0x6c /* Gamma curve */ | |
171 | #define GSP_LEN 15 | |
172 | #define REG_GST 0x7c /* Gamma curve */ | |
173 | #define GST_LEN 15 | |
174 | #define REG_COM21 0x8b | |
175 | #define REG_COM22 0x8c /* Edge enhancement, denoising */ | |
176 | #define COM22_WHTPCOR 0x02 /* White pixel correction enable */ | |
177 | #define COM22_WHTPCOROPT 0x01 /* White pixel correction option */ | |
178 | #define COM22_DENOISE 0x10 /* White pixel correction option */ | |
179 | #define REG_COM23 0x8d /* Color bar test, color gain */ | |
180 | #define COM23_TEST_MODE 0x10 | |
181 | #define REG_DBLC1 0x8f /* Digital BLC */ | |
182 | #define REG_DBLC_B 0x90 /* Digital BLC B channel offset */ | |
183 | #define REG_DBLC_R 0x91 /* Digital BLC R channel offset */ | |
184 | #define REG_DM_LNL 0x92 /* Dummy line low 8 bits */ | |
185 | #define REG_DM_LNH 0x93 /* Dummy line high 8 bits */ | |
186 | #define REG_LCCFB 0x9d /* Lens Correction B channel */ | |
187 | #define REG_LCCFR 0x9e /* Lens Correction R channel */ | |
188 | #define REG_DBLC_GB 0x9f /* Digital BLC GB chan offset */ | |
189 | #define REG_DBLC_GR 0xa0 /* Digital BLC GR chan offset */ | |
190 | #define REG_AECHM 0xa1 /* Exposure value - bits AEC[15:10] */ | |
191 | #define REG_BD50ST 0xa2 /* Banding filter value for 50Hz */ | |
192 | #define REG_BD60ST 0xa3 /* Banding filter value for 60Hz */ | |
193 | #define REG_NULL 0xff /* Array end token */ | |
194 | ||
195 | #define DEF_CLKRC 0x80 | |
196 | ||
197 | #define OV965X_ID(_msb, _lsb) ((_msb) << 8 | (_lsb)) | |
198 | #define OV9650_ID 0x9650 | |
199 | #define OV9652_ID 0x9652 | |
200 | ||
201 | struct ov965x_ctrls { | |
202 | struct v4l2_ctrl_handler handler; | |
203 | struct { | |
204 | struct v4l2_ctrl *auto_exp; | |
205 | struct v4l2_ctrl *exposure; | |
206 | }; | |
207 | struct { | |
208 | struct v4l2_ctrl *auto_wb; | |
209 | struct v4l2_ctrl *blue_balance; | |
210 | struct v4l2_ctrl *red_balance; | |
211 | }; | |
212 | struct { | |
213 | struct v4l2_ctrl *hflip; | |
214 | struct v4l2_ctrl *vflip; | |
215 | }; | |
216 | struct { | |
217 | struct v4l2_ctrl *auto_gain; | |
218 | struct v4l2_ctrl *gain; | |
219 | }; | |
220 | struct v4l2_ctrl *brightness; | |
221 | struct v4l2_ctrl *saturation; | |
222 | struct v4l2_ctrl *sharpness; | |
223 | struct v4l2_ctrl *light_freq; | |
224 | u8 update; | |
225 | }; | |
226 | ||
227 | struct ov965x_framesize { | |
228 | u16 width; | |
229 | u16 height; | |
230 | u16 max_exp_lines; | |
231 | const u8 *regs; | |
232 | }; | |
233 | ||
234 | struct ov965x_interval { | |
235 | struct v4l2_fract interval; | |
236 | /* Maximum resolution for this interval */ | |
237 | struct v4l2_frmsize_discrete size; | |
238 | u8 clkrc_div; | |
239 | }; | |
240 | ||
241 | enum gpio_id { | |
242 | GPIO_PWDN, | |
243 | GPIO_RST, | |
244 | NUM_GPIOS, | |
245 | }; | |
246 | ||
247 | struct ov965x { | |
248 | struct v4l2_subdev sd; | |
249 | struct media_pad pad; | |
250 | enum v4l2_mbus_type bus_type; | |
251 | int gpios[NUM_GPIOS]; | |
252 | /* External master clock frequency */ | |
253 | unsigned long mclk_frequency; | |
254 | ||
255 | /* Protects the struct fields below */ | |
256 | struct mutex lock; | |
257 | ||
258 | struct i2c_client *client; | |
259 | ||
260 | /* Exposure row interval in us */ | |
261 | unsigned int exp_row_interval; | |
262 | ||
263 | unsigned short id; | |
264 | const struct ov965x_framesize *frame_size; | |
265 | /* YUYV sequence (pixel format) control register */ | |
266 | u8 tslb_reg; | |
267 | struct v4l2_mbus_framefmt format; | |
268 | ||
269 | struct ov965x_ctrls ctrls; | |
270 | /* Pointer to frame rate control data structure */ | |
271 | const struct ov965x_interval *fiv; | |
272 | ||
273 | int streaming; | |
274 | int power; | |
275 | ||
276 | u8 apply_frame_fmt; | |
277 | }; | |
278 | ||
279 | struct i2c_rv { | |
280 | u8 addr; | |
281 | u8 value; | |
282 | }; | |
283 | ||
284 | static const struct i2c_rv ov965x_init_regs[] = { | |
285 | { REG_COM2, 0x10 }, /* Set soft sleep mode */ | |
286 | { REG_COM5, 0x00 }, /* System clock options */ | |
287 | { REG_COM2, 0x01 }, /* Output drive, soft sleep mode */ | |
288 | { REG_COM10, 0x00 }, /* Slave mode, HREF vs HSYNC, signals negate */ | |
289 | { REG_EDGE, 0xa6 }, /* Edge enhancement treshhold and factor */ | |
290 | { REG_COM16, 0x02 }, /* Color matrix coeff double option */ | |
291 | { REG_COM17, 0x08 }, /* Single frame out, banding filter */ | |
292 | { 0x16, 0x06 }, | |
293 | { REG_CHLF, 0xc0 }, /* Reserved */ | |
294 | { 0x34, 0xbf }, | |
295 | { 0xa8, 0x80 }, | |
296 | { 0x96, 0x04 }, | |
297 | { 0x8e, 0x00 }, | |
298 | { REG_COM12, 0x77 }, /* HREF option, UV average */ | |
299 | { 0x8b, 0x06 }, | |
300 | { 0x35, 0x91 }, | |
301 | { 0x94, 0x88 }, | |
302 | { 0x95, 0x88 }, | |
303 | { REG_COM15, 0xc1 }, /* Output range, RGB 555/565 */ | |
304 | { REG_GRCOM, 0x2f }, /* Analog BLC & regulator */ | |
305 | { REG_COM6, 0x43 }, /* HREF & ADBLC options */ | |
306 | { REG_COM8, 0xe5 }, /* AGC/AEC options */ | |
307 | { REG_COM13, 0x90 }, /* Gamma selection, colour matrix, UV delay */ | |
308 | { REG_HV, 0x80 }, /* Manual banding filter MSB */ | |
309 | { 0x5c, 0x96 }, /* Reserved up to 0xa5 */ | |
310 | { 0x5d, 0x96 }, | |
311 | { 0x5e, 0x10 }, | |
312 | { 0x59, 0xeb }, | |
313 | { 0x5a, 0x9c }, | |
314 | { 0x5b, 0x55 }, | |
315 | { 0x43, 0xf0 }, | |
316 | { 0x44, 0x10 }, | |
317 | { 0x45, 0x55 }, | |
318 | { 0x46, 0x86 }, | |
319 | { 0x47, 0x64 }, | |
320 | { 0x48, 0x86 }, | |
321 | { 0x5f, 0xe0 }, | |
322 | { 0x60, 0x8c }, | |
323 | { 0x61, 0x20 }, | |
324 | { 0xa5, 0xd9 }, | |
325 | { 0xa4, 0x74 }, /* reserved */ | |
326 | { REG_COM23, 0x02 }, /* Color gain analog/_digital_ */ | |
327 | { REG_COM8, 0xe7 }, /* Enable AEC, AWB, AEC */ | |
328 | { REG_COM22, 0x23 }, /* Edge enhancement, denoising */ | |
329 | { 0xa9, 0xb8 }, | |
330 | { 0xaa, 0x92 }, | |
331 | { 0xab, 0x0a }, | |
332 | { REG_DBLC1, 0xdf }, /* Digital BLC */ | |
333 | { REG_DBLC_B, 0x00 }, /* Digital BLC B chan offset */ | |
334 | { REG_DBLC_R, 0x00 }, /* Digital BLC R chan offset */ | |
335 | { REG_DBLC_GB, 0x00 }, /* Digital BLC GB chan offset */ | |
336 | { REG_DBLC_GR, 0x00 }, | |
337 | { REG_COM9, 0x3a }, /* Gain ceiling 16x */ | |
338 | { REG_NULL, 0 } | |
339 | }; | |
340 | ||
341 | #define NUM_FMT_REGS 14 | |
342 | /* | |
343 | * COM7, COM3, COM4, HSTART, HSTOP, HREF, VSTART, VSTOP, VREF, | |
344 | * EXHCH, EXHCL, ADC, OCOM, OFON | |
345 | */ | |
346 | static const u8 frame_size_reg_addr[NUM_FMT_REGS] = { | |
347 | 0x12, 0x0c, 0x0d, 0x17, 0x18, 0x32, 0x19, 0x1a, 0x03, | |
348 | 0x2a, 0x2b, 0x37, 0x38, 0x39, | |
349 | }; | |
350 | ||
351 | static const u8 ov965x_sxga_regs[NUM_FMT_REGS] = { | |
352 | 0x00, 0x00, 0x00, 0x1e, 0xbe, 0xbf, 0x01, 0x81, 0x12, | |
353 | 0x10, 0x34, 0x81, 0x93, 0x51, | |
354 | }; | |
355 | ||
356 | static const u8 ov965x_vga_regs[NUM_FMT_REGS] = { | |
357 | 0x40, 0x04, 0x80, 0x26, 0xc6, 0xed, 0x01, 0x3d, 0x00, | |
358 | 0x10, 0x40, 0x91, 0x12, 0x43, | |
359 | }; | |
360 | ||
361 | /* Determined empirically. */ | |
362 | static const u8 ov965x_qvga_regs[NUM_FMT_REGS] = { | |
363 | 0x10, 0x04, 0x80, 0x25, 0xc5, 0xbf, 0x00, 0x80, 0x12, | |
364 | 0x10, 0x40, 0x91, 0x12, 0x43, | |
365 | }; | |
366 | ||
367 | static const struct ov965x_framesize ov965x_framesizes[] = { | |
368 | { | |
369 | .width = SXGA_WIDTH, | |
370 | .height = SXGA_HEIGHT, | |
371 | .regs = ov965x_sxga_regs, | |
372 | .max_exp_lines = 1048, | |
373 | }, { | |
374 | .width = VGA_WIDTH, | |
375 | .height = VGA_HEIGHT, | |
376 | .regs = ov965x_vga_regs, | |
377 | .max_exp_lines = 498, | |
378 | }, { | |
379 | .width = QVGA_WIDTH, | |
380 | .height = QVGA_HEIGHT, | |
381 | .regs = ov965x_qvga_regs, | |
382 | .max_exp_lines = 248, | |
383 | }, | |
384 | }; | |
385 | ||
386 | struct ov965x_pixfmt { | |
f5fe58fd | 387 | u32 code; |
84a15ded SN |
388 | u32 colorspace; |
389 | /* REG_TSLB value, only bits [3:2] may be set. */ | |
390 | u8 tslb_reg; | |
391 | }; | |
392 | ||
393 | static const struct ov965x_pixfmt ov965x_formats[] = { | |
f5fe58fd BB |
394 | { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG, 0x00}, |
395 | { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG, 0x04}, | |
396 | { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG, 0x0c}, | |
397 | { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_JPEG, 0x08}, | |
84a15ded SN |
398 | }; |
399 | ||
400 | /* | |
401 | * This table specifies possible frame resolution and interval | |
402 | * combinations. Default CLKRC[5:0] divider values are valid | |
403 | * only for 24 MHz external clock frequency. | |
404 | */ | |
405 | static struct ov965x_interval ov965x_intervals[] = { | |
406 | {{ 100, 625 }, { SXGA_WIDTH, SXGA_HEIGHT }, 0 }, /* 6.25 fps */ | |
407 | {{ 10, 125 }, { VGA_WIDTH, VGA_HEIGHT }, 1 }, /* 12.5 fps */ | |
408 | {{ 10, 125 }, { QVGA_WIDTH, QVGA_HEIGHT }, 3 }, /* 12.5 fps */ | |
409 | {{ 1, 25 }, { VGA_WIDTH, VGA_HEIGHT }, 0 }, /* 25 fps */ | |
410 | {{ 1, 25 }, { QVGA_WIDTH, QVGA_HEIGHT }, 1 }, /* 25 fps */ | |
411 | }; | |
412 | ||
413 | static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl) | |
414 | { | |
415 | return &container_of(ctrl->handler, struct ov965x, ctrls.handler)->sd; | |
416 | } | |
417 | ||
418 | static inline struct ov965x *to_ov965x(struct v4l2_subdev *sd) | |
419 | { | |
420 | return container_of(sd, struct ov965x, sd); | |
421 | } | |
422 | ||
423 | static int ov965x_read(struct i2c_client *client, u8 addr, u8 *val) | |
424 | { | |
425 | u8 buf = addr; | |
426 | struct i2c_msg msg = { | |
427 | .addr = client->addr, | |
428 | .flags = 0, | |
429 | .len = 1, | |
430 | .buf = &buf | |
431 | }; | |
432 | int ret; | |
433 | ||
434 | ret = i2c_transfer(client->adapter, &msg, 1); | |
435 | if (ret == 1) { | |
436 | msg.flags = I2C_M_RD; | |
437 | ret = i2c_transfer(client->adapter, &msg, 1); | |
438 | ||
439 | if (ret == 1) | |
440 | *val = buf; | |
441 | } | |
442 | ||
443 | v4l2_dbg(2, debug, client, "%s: 0x%02x @ 0x%02x. (%d)\n", | |
444 | __func__, *val, addr, ret); | |
445 | ||
446 | return ret == 1 ? 0 : ret; | |
447 | } | |
448 | ||
449 | static int ov965x_write(struct i2c_client *client, u8 addr, u8 val) | |
450 | { | |
451 | u8 buf[2] = { addr, val }; | |
452 | ||
453 | int ret = i2c_master_send(client, buf, 2); | |
454 | ||
455 | v4l2_dbg(2, debug, client, "%s: 0x%02x @ 0x%02X (%d)\n", | |
456 | __func__, val, addr, ret); | |
457 | ||
458 | return ret == 2 ? 0 : ret; | |
459 | } | |
460 | ||
461 | static int ov965x_write_array(struct i2c_client *client, | |
462 | const struct i2c_rv *regs) | |
463 | { | |
464 | int i, ret = 0; | |
465 | ||
466 | for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++) | |
467 | ret = ov965x_write(client, regs[i].addr, regs[i].value); | |
468 | ||
469 | return ret; | |
470 | } | |
471 | ||
472 | static int ov965x_set_default_gamma_curve(struct ov965x *ov965x) | |
473 | { | |
474 | static const u8 gamma_curve[] = { | |
475 | /* Values taken from OV application note. */ | |
476 | 0x40, 0x30, 0x4b, 0x60, 0x70, 0x70, 0x70, 0x70, | |
477 | 0x60, 0x60, 0x50, 0x48, 0x3a, 0x2e, 0x28, 0x22, | |
478 | 0x04, 0x07, 0x10, 0x28, 0x36, 0x44, 0x52, 0x60, | |
479 | 0x6c, 0x78, 0x8c, 0x9e, 0xbb, 0xd2, 0xe6 | |
480 | }; | |
481 | u8 addr = REG_GSP; | |
482 | unsigned int i; | |
483 | ||
484 | for (i = 0; i < ARRAY_SIZE(gamma_curve); i++) { | |
485 | int ret = ov965x_write(ov965x->client, addr, gamma_curve[i]); | |
486 | if (ret < 0) | |
487 | return ret; | |
488 | addr++; | |
489 | } | |
490 | ||
491 | return 0; | |
492 | }; | |
493 | ||
494 | static int ov965x_set_color_matrix(struct ov965x *ov965x) | |
495 | { | |
496 | static const u8 mtx[] = { | |
497 | /* MTX1..MTX9, MTXS */ | |
498 | 0x3a, 0x3d, 0x03, 0x12, 0x26, 0x38, 0x40, 0x40, 0x40, 0x0d | |
499 | }; | |
500 | u8 addr = REG_MTX(1); | |
501 | unsigned int i; | |
502 | ||
503 | for (i = 0; i < ARRAY_SIZE(mtx); i++) { | |
504 | int ret = ov965x_write(ov965x->client, addr, mtx[i]); | |
505 | if (ret < 0) | |
506 | return ret; | |
507 | addr++; | |
508 | } | |
509 | ||
510 | return 0; | |
511 | } | |
512 | ||
513 | static void ov965x_gpio_set(int gpio, int val) | |
514 | { | |
515 | if (gpio_is_valid(gpio)) | |
516 | gpio_set_value(gpio, val); | |
517 | } | |
518 | ||
519 | static void __ov965x_set_power(struct ov965x *ov965x, int on) | |
520 | { | |
521 | if (on) { | |
522 | ov965x_gpio_set(ov965x->gpios[GPIO_PWDN], 0); | |
523 | ov965x_gpio_set(ov965x->gpios[GPIO_RST], 0); | |
524 | usleep_range(25000, 26000); | |
525 | } else { | |
526 | ov965x_gpio_set(ov965x->gpios[GPIO_RST], 1); | |
527 | ov965x_gpio_set(ov965x->gpios[GPIO_PWDN], 1); | |
528 | } | |
529 | ||
530 | ov965x->streaming = 0; | |
531 | } | |
532 | ||
533 | static int ov965x_s_power(struct v4l2_subdev *sd, int on) | |
534 | { | |
535 | struct ov965x *ov965x = to_ov965x(sd); | |
536 | struct i2c_client *client = ov965x->client; | |
537 | int ret = 0; | |
538 | ||
539 | v4l2_dbg(1, debug, client, "%s: on: %d\n", __func__, on); | |
540 | ||
541 | mutex_lock(&ov965x->lock); | |
542 | if (ov965x->power == !on) { | |
543 | __ov965x_set_power(ov965x, on); | |
544 | if (on) { | |
545 | ret = ov965x_write_array(client, | |
546 | ov965x_init_regs); | |
547 | ov965x->apply_frame_fmt = 1; | |
548 | ov965x->ctrls.update = 1; | |
549 | } | |
550 | } | |
551 | if (!ret) | |
552 | ov965x->power += on ? 1 : -1; | |
553 | ||
554 | WARN_ON(ov965x->power < 0); | |
555 | mutex_unlock(&ov965x->lock); | |
556 | return ret; | |
557 | } | |
558 | ||
559 | /* | |
560 | * V4L2 controls | |
561 | */ | |
562 | ||
563 | static void ov965x_update_exposure_ctrl(struct ov965x *ov965x) | |
564 | { | |
565 | struct v4l2_ctrl *ctrl = ov965x->ctrls.exposure; | |
566 | unsigned long fint, trow; | |
567 | int min, max, def; | |
568 | u8 clkrc; | |
569 | ||
570 | mutex_lock(&ov965x->lock); | |
571 | if (WARN_ON(!ctrl || !ov965x->frame_size)) { | |
572 | mutex_unlock(&ov965x->lock); | |
573 | return; | |
574 | } | |
575 | clkrc = DEF_CLKRC + ov965x->fiv->clkrc_div; | |
576 | /* Calculate internal clock frequency */ | |
577 | fint = ov965x->mclk_frequency * ((clkrc >> 7) + 1) / | |
578 | ((2 * ((clkrc & 0x3f) + 1))); | |
579 | /* and the row interval (in us). */ | |
580 | trow = (2 * 1520 * 1000000UL) / fint; | |
581 | max = ov965x->frame_size->max_exp_lines * trow; | |
582 | ov965x->exp_row_interval = trow; | |
583 | mutex_unlock(&ov965x->lock); | |
584 | ||
585 | v4l2_dbg(1, debug, &ov965x->sd, "clkrc: %#x, fi: %lu, tr: %lu, %d\n", | |
586 | clkrc, fint, trow, max); | |
587 | ||
588 | /* Update exposure time range to match current frame format. */ | |
589 | min = (trow + 100) / 100; | |
590 | max = (max - 100) / 100; | |
591 | def = min + (max - min) / 2; | |
592 | ||
593 | if (v4l2_ctrl_modify_range(ctrl, min, max, 1, def)) | |
594 | v4l2_err(&ov965x->sd, "Exposure ctrl range update failed\n"); | |
595 | } | |
596 | ||
597 | static int ov965x_set_banding_filter(struct ov965x *ov965x, int value) | |
598 | { | |
599 | unsigned long mbd, light_freq; | |
600 | int ret; | |
601 | u8 reg; | |
602 | ||
603 | ret = ov965x_read(ov965x->client, REG_COM8, ®); | |
604 | if (!ret) { | |
605 | if (value == V4L2_CID_POWER_LINE_FREQUENCY_DISABLED) | |
606 | reg &= ~COM8_BFILT; | |
607 | else | |
608 | reg |= COM8_BFILT; | |
609 | ret = ov965x_write(ov965x->client, REG_COM8, reg); | |
610 | } | |
611 | if (value == V4L2_CID_POWER_LINE_FREQUENCY_DISABLED) | |
612 | return 0; | |
613 | if (WARN_ON(ov965x->fiv == NULL)) | |
614 | return -EINVAL; | |
615 | /* Set minimal exposure time for 50/60 HZ lighting */ | |
616 | if (value == V4L2_CID_POWER_LINE_FREQUENCY_50HZ) | |
617 | light_freq = 50; | |
618 | else | |
619 | light_freq = 60; | |
620 | mbd = (1000UL * ov965x->fiv->interval.denominator * | |
621 | ov965x->frame_size->max_exp_lines) / | |
622 | ov965x->fiv->interval.numerator; | |
623 | mbd = ((mbd / (light_freq * 2)) + 500) / 1000UL; | |
624 | ||
625 | return ov965x_write(ov965x->client, REG_MBD, mbd); | |
626 | } | |
627 | ||
628 | static int ov965x_set_white_balance(struct ov965x *ov965x, int awb) | |
629 | { | |
630 | int ret; | |
631 | u8 reg; | |
632 | ||
633 | ret = ov965x_read(ov965x->client, REG_COM8, ®); | |
634 | if (!ret) { | |
635 | reg = awb ? reg | REG_COM8 : reg & ~REG_COM8; | |
636 | ret = ov965x_write(ov965x->client, REG_COM8, reg); | |
637 | } | |
638 | if (!ret && !awb) { | |
639 | ret = ov965x_write(ov965x->client, REG_BLUE, | |
640 | ov965x->ctrls.blue_balance->val); | |
641 | if (ret < 0) | |
642 | return ret; | |
643 | ret = ov965x_write(ov965x->client, REG_RED, | |
644 | ov965x->ctrls.red_balance->val); | |
645 | } | |
646 | return ret; | |
647 | } | |
648 | ||
649 | #define NUM_BR_LEVELS 7 | |
650 | #define NUM_BR_REGS 3 | |
651 | ||
652 | static int ov965x_set_brightness(struct ov965x *ov965x, int val) | |
653 | { | |
654 | static const u8 regs[NUM_BR_LEVELS + 1][NUM_BR_REGS] = { | |
655 | { REG_AEW, REG_AEB, REG_VPT }, | |
656 | { 0x1c, 0x12, 0x50 }, /* -3 */ | |
657 | { 0x3d, 0x30, 0x71 }, /* -2 */ | |
658 | { 0x50, 0x44, 0x92 }, /* -1 */ | |
659 | { 0x70, 0x64, 0xc3 }, /* 0 */ | |
660 | { 0x90, 0x84, 0xd4 }, /* +1 */ | |
661 | { 0xc4, 0xbf, 0xf9 }, /* +2 */ | |
662 | { 0xd8, 0xd0, 0xfa }, /* +3 */ | |
663 | }; | |
664 | int i, ret = 0; | |
665 | ||
666 | val += (NUM_BR_LEVELS / 2 + 1); | |
667 | if (val > NUM_BR_LEVELS) | |
668 | return -EINVAL; | |
669 | ||
670 | for (i = 0; i < NUM_BR_REGS && !ret; i++) | |
671 | ret = ov965x_write(ov965x->client, regs[0][i], | |
672 | regs[val][i]); | |
673 | return ret; | |
674 | } | |
675 | ||
676 | static int ov965x_set_gain(struct ov965x *ov965x, int auto_gain) | |
677 | { | |
678 | struct i2c_client *client = ov965x->client; | |
679 | struct ov965x_ctrls *ctrls = &ov965x->ctrls; | |
680 | int ret = 0; | |
681 | u8 reg; | |
682 | /* | |
683 | * For manual mode we need to disable AGC first, so | |
684 | * gain value in REG_VREF, REG_GAIN is not overwritten. | |
685 | */ | |
686 | if (ctrls->auto_gain->is_new) { | |
687 | ret = ov965x_read(client, REG_COM8, ®); | |
688 | if (ret < 0) | |
689 | return ret; | |
690 | if (ctrls->auto_gain->val) | |
691 | reg |= COM8_AGC; | |
692 | else | |
693 | reg &= ~COM8_AGC; | |
694 | ret = ov965x_write(client, REG_COM8, reg); | |
695 | if (ret < 0) | |
696 | return ret; | |
697 | } | |
698 | ||
699 | if (ctrls->gain->is_new && !auto_gain) { | |
700 | unsigned int gain = ctrls->gain->val; | |
701 | unsigned int rgain; | |
702 | int m; | |
703 | /* | |
704 | * Convert gain control value to the sensor's gain | |
705 | * registers (VREF[7:6], GAIN[7:0]) format. | |
706 | */ | |
707 | for (m = 6; m >= 0; m--) | |
708 | if (gain >= (1 << m) * 16) | |
709 | break; | |
710 | rgain = (gain - ((1 << m) * 16)) / (1 << m); | |
711 | rgain |= (((1 << m) - 1) << 4); | |
712 | ||
713 | ret = ov965x_write(client, REG_GAIN, rgain & 0xff); | |
714 | if (ret < 0) | |
715 | return ret; | |
716 | ret = ov965x_read(client, REG_VREF, ®); | |
717 | if (ret < 0) | |
718 | return ret; | |
719 | reg &= ~VREF_GAIN_MASK; | |
720 | reg |= (((rgain >> 8) & 0x3) << 6); | |
721 | ret = ov965x_write(client, REG_VREF, reg); | |
722 | if (ret < 0) | |
723 | return ret; | |
724 | /* Return updated control's value to userspace */ | |
725 | ctrls->gain->val = (1 << m) * (16 + (rgain & 0xf)); | |
726 | } | |
727 | ||
728 | return ret; | |
729 | } | |
730 | ||
731 | static int ov965x_set_sharpness(struct ov965x *ov965x, unsigned int value) | |
732 | { | |
733 | u8 com14, edge; | |
734 | int ret; | |
735 | ||
736 | ret = ov965x_read(ov965x->client, REG_COM14, &com14); | |
737 | if (ret < 0) | |
738 | return ret; | |
739 | ret = ov965x_read(ov965x->client, REG_EDGE, &edge); | |
740 | if (ret < 0) | |
741 | return ret; | |
742 | com14 = value ? com14 | COM14_EDGE_EN : com14 & ~COM14_EDGE_EN; | |
743 | value--; | |
744 | if (value > 0x0f) { | |
745 | com14 |= COM14_EEF_X2; | |
746 | value >>= 1; | |
747 | } else { | |
748 | com14 &= ~COM14_EEF_X2; | |
749 | } | |
750 | ret = ov965x_write(ov965x->client, REG_COM14, com14); | |
751 | if (ret < 0) | |
752 | return ret; | |
753 | ||
754 | edge &= ~EDGE_FACTOR_MASK; | |
755 | edge |= ((u8)value & 0x0f); | |
756 | ||
757 | return ov965x_write(ov965x->client, REG_EDGE, edge); | |
758 | } | |
759 | ||
760 | static int ov965x_set_exposure(struct ov965x *ov965x, int exp) | |
761 | { | |
762 | struct i2c_client *client = ov965x->client; | |
763 | struct ov965x_ctrls *ctrls = &ov965x->ctrls; | |
764 | bool auto_exposure = (exp == V4L2_EXPOSURE_AUTO); | |
765 | int ret; | |
766 | u8 reg; | |
767 | ||
768 | if (ctrls->auto_exp->is_new) { | |
769 | ret = ov965x_read(client, REG_COM8, ®); | |
770 | if (ret < 0) | |
771 | return ret; | |
772 | if (auto_exposure) | |
773 | reg |= (COM8_AEC | COM8_AGC); | |
774 | else | |
775 | reg &= ~(COM8_AEC | COM8_AGC); | |
776 | ret = ov965x_write(client, REG_COM8, reg); | |
777 | if (ret < 0) | |
778 | return ret; | |
779 | } | |
780 | ||
781 | if (!auto_exposure && ctrls->exposure->is_new) { | |
782 | unsigned int exposure = (ctrls->exposure->val * 100) | |
783 | / ov965x->exp_row_interval; | |
784 | /* | |
785 | * Manual exposure value | |
786 | * [b15:b0] - AECHM (b15:b10), AECH (b9:b2), COM1 (b1:b0) | |
787 | */ | |
788 | ret = ov965x_write(client, REG_COM1, exposure & 0x3); | |
789 | if (!ret) | |
790 | ret = ov965x_write(client, REG_AECH, | |
791 | (exposure >> 2) & 0xff); | |
792 | if (!ret) | |
793 | ret = ov965x_write(client, REG_AECHM, | |
794 | (exposure >> 10) & 0x3f); | |
795 | /* Update the value to minimize rounding errors */ | |
796 | ctrls->exposure->val = ((exposure * ov965x->exp_row_interval) | |
797 | + 50) / 100; | |
798 | if (ret < 0) | |
799 | return ret; | |
800 | } | |
801 | ||
802 | v4l2_ctrl_activate(ov965x->ctrls.brightness, !exp); | |
803 | return 0; | |
804 | } | |
805 | ||
806 | static int ov965x_set_flip(struct ov965x *ov965x) | |
807 | { | |
808 | u8 mvfp = 0; | |
809 | ||
810 | if (ov965x->ctrls.hflip->val) | |
811 | mvfp |= MVFP_MIRROR; | |
812 | ||
813 | if (ov965x->ctrls.vflip->val) | |
814 | mvfp |= MVFP_FLIP; | |
815 | ||
816 | return ov965x_write(ov965x->client, REG_MVFP, mvfp); | |
817 | } | |
818 | ||
819 | #define NUM_SAT_LEVELS 5 | |
820 | #define NUM_SAT_REGS 6 | |
821 | ||
822 | static int ov965x_set_saturation(struct ov965x *ov965x, int val) | |
823 | { | |
824 | static const u8 regs[NUM_SAT_LEVELS][NUM_SAT_REGS] = { | |
825 | /* MTX(1)...MTX(6) */ | |
826 | { 0x1d, 0x1f, 0x02, 0x09, 0x13, 0x1c }, /* -2 */ | |
827 | { 0x2e, 0x31, 0x02, 0x0e, 0x1e, 0x2d }, /* -1 */ | |
828 | { 0x3a, 0x3d, 0x03, 0x12, 0x26, 0x38 }, /* 0 */ | |
829 | { 0x46, 0x49, 0x04, 0x16, 0x2e, 0x43 }, /* +1 */ | |
830 | { 0x57, 0x5c, 0x05, 0x1b, 0x39, 0x54 }, /* +2 */ | |
831 | }; | |
832 | u8 addr = REG_MTX(1); | |
833 | int i, ret = 0; | |
834 | ||
835 | val += (NUM_SAT_LEVELS / 2); | |
836 | if (val >= NUM_SAT_LEVELS) | |
837 | return -EINVAL; | |
838 | ||
839 | for (i = 0; i < NUM_SAT_REGS && !ret; i++) | |
840 | ret = ov965x_write(ov965x->client, addr + i, regs[val][i]); | |
841 | ||
842 | return ret; | |
843 | } | |
844 | ||
845 | static int ov965x_set_test_pattern(struct ov965x *ov965x, int value) | |
846 | { | |
847 | int ret; | |
848 | u8 reg; | |
849 | ||
850 | ret = ov965x_read(ov965x->client, REG_COM23, ®); | |
851 | if (ret < 0) | |
852 | return ret; | |
853 | reg = value ? reg | COM23_TEST_MODE : reg & ~COM23_TEST_MODE; | |
854 | return ov965x_write(ov965x->client, REG_COM23, reg); | |
855 | } | |
856 | ||
857 | static int __g_volatile_ctrl(struct ov965x *ov965x, struct v4l2_ctrl *ctrl) | |
858 | { | |
859 | struct i2c_client *client = ov965x->client; | |
860 | unsigned int exposure, gain, m; | |
861 | u8 reg0, reg1, reg2; | |
862 | int ret; | |
863 | ||
864 | if (!ov965x->power) | |
865 | return 0; | |
866 | ||
867 | switch (ctrl->id) { | |
868 | case V4L2_CID_AUTOGAIN: | |
869 | if (!ctrl->val) | |
870 | return 0; | |
871 | ret = ov965x_read(client, REG_GAIN, ®0); | |
872 | if (ret < 0) | |
873 | return ret; | |
874 | ret = ov965x_read(client, REG_VREF, ®1); | |
875 | if (ret < 0) | |
876 | return ret; | |
877 | gain = ((reg1 >> 6) << 8) | reg0; | |
878 | m = 0x01 << fls(gain >> 4); | |
879 | ov965x->ctrls.gain->val = m * (16 + (gain & 0xf)); | |
880 | break; | |
881 | ||
882 | case V4L2_CID_EXPOSURE_AUTO: | |
883 | if (ctrl->val == V4L2_EXPOSURE_MANUAL) | |
884 | return 0; | |
885 | ret = ov965x_read(client, REG_COM1, ®0); | |
886 | if (!ret) | |
887 | ret = ov965x_read(client, REG_AECH, ®1); | |
888 | if (!ret) | |
889 | ret = ov965x_read(client, REG_AECHM, ®2); | |
890 | if (ret < 0) | |
891 | return ret; | |
892 | exposure = ((reg2 & 0x3f) << 10) | (reg1 << 2) | | |
893 | (reg0 & 0x3); | |
894 | ov965x->ctrls.exposure->val = ((exposure * | |
895 | ov965x->exp_row_interval) + 50) / 100; | |
896 | break; | |
897 | } | |
898 | ||
899 | return 0; | |
900 | } | |
901 | ||
902 | static int ov965x_g_volatile_ctrl(struct v4l2_ctrl *ctrl) | |
903 | { | |
904 | struct v4l2_subdev *sd = ctrl_to_sd(ctrl); | |
905 | struct ov965x *ov965x = to_ov965x(sd); | |
906 | int ret; | |
907 | ||
908 | v4l2_dbg(1, debug, sd, "g_ctrl: %s\n", ctrl->name); | |
909 | ||
910 | mutex_lock(&ov965x->lock); | |
911 | ret = __g_volatile_ctrl(ov965x, ctrl); | |
912 | mutex_unlock(&ov965x->lock); | |
913 | return ret; | |
914 | } | |
915 | ||
916 | static int ov965x_s_ctrl(struct v4l2_ctrl *ctrl) | |
917 | { | |
918 | struct v4l2_subdev *sd = ctrl_to_sd(ctrl); | |
919 | struct ov965x *ov965x = to_ov965x(sd); | |
920 | int ret = -EINVAL; | |
921 | ||
922 | v4l2_dbg(1, debug, sd, "s_ctrl: %s, value: %d. power: %d\n", | |
923 | ctrl->name, ctrl->val, ov965x->power); | |
924 | ||
925 | mutex_lock(&ov965x->lock); | |
926 | /* | |
927 | * If the device is not powered up now postpone applying control's | |
928 | * value to the hardware, until it is ready to accept commands. | |
929 | */ | |
930 | if (ov965x->power == 0) { | |
931 | mutex_unlock(&ov965x->lock); | |
932 | return 0; | |
933 | } | |
934 | ||
935 | switch (ctrl->id) { | |
936 | case V4L2_CID_AUTO_WHITE_BALANCE: | |
937 | ret = ov965x_set_white_balance(ov965x, ctrl->val); | |
938 | break; | |
939 | ||
940 | case V4L2_CID_BRIGHTNESS: | |
941 | ret = ov965x_set_brightness(ov965x, ctrl->val); | |
942 | break; | |
943 | ||
944 | case V4L2_CID_EXPOSURE_AUTO: | |
945 | ret = ov965x_set_exposure(ov965x, ctrl->val); | |
946 | break; | |
947 | ||
948 | case V4L2_CID_AUTOGAIN: | |
949 | ret = ov965x_set_gain(ov965x, ctrl->val); | |
950 | break; | |
951 | ||
952 | case V4L2_CID_HFLIP: | |
953 | ret = ov965x_set_flip(ov965x); | |
954 | break; | |
955 | ||
956 | case V4L2_CID_POWER_LINE_FREQUENCY: | |
957 | ret = ov965x_set_banding_filter(ov965x, ctrl->val); | |
958 | break; | |
959 | ||
960 | case V4L2_CID_SATURATION: | |
961 | ret = ov965x_set_saturation(ov965x, ctrl->val); | |
962 | break; | |
963 | ||
964 | case V4L2_CID_SHARPNESS: | |
965 | ret = ov965x_set_sharpness(ov965x, ctrl->val); | |
966 | break; | |
967 | ||
968 | case V4L2_CID_TEST_PATTERN: | |
969 | ret = ov965x_set_test_pattern(ov965x, ctrl->val); | |
970 | break; | |
971 | } | |
972 | ||
973 | mutex_unlock(&ov965x->lock); | |
974 | return ret; | |
975 | } | |
976 | ||
977 | static const struct v4l2_ctrl_ops ov965x_ctrl_ops = { | |
978 | .g_volatile_ctrl = ov965x_g_volatile_ctrl, | |
979 | .s_ctrl = ov965x_s_ctrl, | |
980 | }; | |
981 | ||
982 | static const char * const test_pattern_menu[] = { | |
983 | "Disabled", | |
984 | "Color bars", | |
985 | NULL | |
986 | }; | |
987 | ||
988 | static int ov965x_initialize_controls(struct ov965x *ov965x) | |
989 | { | |
990 | const struct v4l2_ctrl_ops *ops = &ov965x_ctrl_ops; | |
991 | struct ov965x_ctrls *ctrls = &ov965x->ctrls; | |
992 | struct v4l2_ctrl_handler *hdl = &ctrls->handler; | |
993 | int ret; | |
994 | ||
995 | ret = v4l2_ctrl_handler_init(hdl, 16); | |
996 | if (ret < 0) | |
997 | return ret; | |
998 | ||
999 | /* Auto/manual white balance */ | |
1000 | ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops, | |
1001 | V4L2_CID_AUTO_WHITE_BALANCE, | |
1002 | 0, 1, 1, 1); | |
1003 | ctrls->blue_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BLUE_BALANCE, | |
1004 | 0, 0xff, 1, 0x80); | |
1005 | ctrls->red_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_RED_BALANCE, | |
1006 | 0, 0xff, 1, 0x80); | |
1007 | /* Auto/manual exposure */ | |
1008 | ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops, | |
1009 | V4L2_CID_EXPOSURE_AUTO, | |
1010 | V4L2_EXPOSURE_MANUAL, 0, V4L2_EXPOSURE_AUTO); | |
1011 | /* Exposure time, in 100 us units. min/max is updated dynamically. */ | |
1012 | ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, | |
1013 | V4L2_CID_EXPOSURE_ABSOLUTE, | |
1014 | 2, 1500, 1, 500); | |
1015 | /* Auto/manual gain */ | |
1016 | ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTOGAIN, | |
1017 | 0, 1, 1, 1); | |
1018 | ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN, | |
1019 | 16, 64 * (16 + 15), 1, 64 * 16); | |
1020 | ||
1021 | ctrls->saturation = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION, | |
1022 | -2, 2, 1, 0); | |
1023 | ctrls->brightness = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BRIGHTNESS, | |
1024 | -3, 3, 1, 0); | |
1025 | ctrls->sharpness = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SHARPNESS, | |
1026 | 0, 32, 1, 6); | |
1027 | ||
1028 | ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, 0); | |
1029 | ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, 0); | |
1030 | ||
1031 | ctrls->light_freq = v4l2_ctrl_new_std_menu(hdl, ops, | |
1032 | V4L2_CID_POWER_LINE_FREQUENCY, | |
1033 | V4L2_CID_POWER_LINE_FREQUENCY_60HZ, ~0x7, | |
1034 | V4L2_CID_POWER_LINE_FREQUENCY_50HZ); | |
1035 | ||
1036 | v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN, | |
1037 | ARRAY_SIZE(test_pattern_menu) - 1, 0, 0, | |
1038 | test_pattern_menu); | |
1039 | if (hdl->error) { | |
1040 | ret = hdl->error; | |
1041 | v4l2_ctrl_handler_free(hdl); | |
1042 | return ret; | |
1043 | } | |
1044 | ||
1045 | ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE; | |
1046 | ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE; | |
1047 | ||
1048 | v4l2_ctrl_auto_cluster(3, &ctrls->auto_wb, 0, false); | |
1049 | v4l2_ctrl_auto_cluster(3, &ctrls->auto_gain, 0, true); | |
1050 | v4l2_ctrl_auto_cluster(3, &ctrls->auto_exp, 1, true); | |
1051 | v4l2_ctrl_cluster(2, &ctrls->hflip); | |
1052 | ||
1053 | ov965x->sd.ctrl_handler = hdl; | |
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | /* | |
1058 | * V4L2 subdev video and pad level operations | |
1059 | */ | |
1060 | static void ov965x_get_default_format(struct v4l2_mbus_framefmt *mf) | |
1061 | { | |
1062 | mf->width = ov965x_framesizes[0].width; | |
1063 | mf->height = ov965x_framesizes[0].height; | |
1064 | mf->colorspace = ov965x_formats[0].colorspace; | |
1065 | mf->code = ov965x_formats[0].code; | |
1066 | mf->field = V4L2_FIELD_NONE; | |
1067 | } | |
1068 | ||
1069 | static int ov965x_enum_mbus_code(struct v4l2_subdev *sd, | |
f7234138 | 1070 | struct v4l2_subdev_pad_config *cfg, |
84a15ded SN |
1071 | struct v4l2_subdev_mbus_code_enum *code) |
1072 | { | |
1073 | if (code->index >= ARRAY_SIZE(ov965x_formats)) | |
1074 | return -EINVAL; | |
1075 | ||
1076 | code->code = ov965x_formats[code->index].code; | |
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | static int ov965x_enum_frame_sizes(struct v4l2_subdev *sd, | |
f7234138 | 1081 | struct v4l2_subdev_pad_config *cfg, |
84a15ded SN |
1082 | struct v4l2_subdev_frame_size_enum *fse) |
1083 | { | |
1084 | int i = ARRAY_SIZE(ov965x_formats); | |
1085 | ||
6a4760ed | 1086 | if (fse->index >= ARRAY_SIZE(ov965x_framesizes)) |
84a15ded SN |
1087 | return -EINVAL; |
1088 | ||
1089 | while (--i) | |
1090 | if (fse->code == ov965x_formats[i].code) | |
1091 | break; | |
1092 | ||
1093 | fse->code = ov965x_formats[i].code; | |
1094 | ||
1095 | fse->min_width = ov965x_framesizes[fse->index].width; | |
1096 | fse->max_width = fse->min_width; | |
1097 | fse->max_height = ov965x_framesizes[fse->index].height; | |
1098 | fse->min_height = fse->max_height; | |
1099 | ||
1100 | return 0; | |
1101 | } | |
1102 | ||
1103 | static int ov965x_g_frame_interval(struct v4l2_subdev *sd, | |
1104 | struct v4l2_subdev_frame_interval *fi) | |
1105 | { | |
1106 | struct ov965x *ov965x = to_ov965x(sd); | |
1107 | ||
1108 | mutex_lock(&ov965x->lock); | |
1109 | fi->interval = ov965x->fiv->interval; | |
1110 | mutex_unlock(&ov965x->lock); | |
1111 | ||
1112 | return 0; | |
1113 | } | |
1114 | ||
1115 | static int __ov965x_set_frame_interval(struct ov965x *ov965x, | |
1116 | struct v4l2_subdev_frame_interval *fi) | |
1117 | { | |
1118 | struct v4l2_mbus_framefmt *mbus_fmt = &ov965x->format; | |
1119 | const struct ov965x_interval *fiv = &ov965x_intervals[0]; | |
1120 | u64 req_int, err, min_err = ~0ULL; | |
1121 | unsigned int i; | |
1122 | ||
1123 | ||
1124 | if (fi->interval.denominator == 0) | |
1125 | return -EINVAL; | |
1126 | ||
1127 | req_int = (u64)(fi->interval.numerator * 10000) / | |
1128 | fi->interval.denominator; | |
1129 | ||
1130 | for (i = 0; i < ARRAY_SIZE(ov965x_intervals); i++) { | |
1131 | const struct ov965x_interval *iv = &ov965x_intervals[i]; | |
1132 | ||
1133 | if (mbus_fmt->width != iv->size.width || | |
1134 | mbus_fmt->height != iv->size.height) | |
1135 | continue; | |
1136 | err = abs64((u64)(iv->interval.numerator * 10000) / | |
1137 | iv->interval.denominator - req_int); | |
1138 | if (err < min_err) { | |
1139 | fiv = iv; | |
1140 | min_err = err; | |
1141 | } | |
1142 | } | |
1143 | ov965x->fiv = fiv; | |
1144 | ||
1145 | v4l2_dbg(1, debug, &ov965x->sd, "Changed frame interval to %u us\n", | |
1146 | fiv->interval.numerator * 1000000 / fiv->interval.denominator); | |
1147 | ||
1148 | return 0; | |
1149 | } | |
1150 | ||
1151 | static int ov965x_s_frame_interval(struct v4l2_subdev *sd, | |
1152 | struct v4l2_subdev_frame_interval *fi) | |
1153 | { | |
1154 | struct ov965x *ov965x = to_ov965x(sd); | |
1155 | int ret; | |
1156 | ||
1157 | v4l2_dbg(1, debug, sd, "Setting %d/%d frame interval\n", | |
1158 | fi->interval.numerator, fi->interval.denominator); | |
1159 | ||
1160 | mutex_lock(&ov965x->lock); | |
1161 | ret = __ov965x_set_frame_interval(ov965x, fi); | |
1162 | ov965x->apply_frame_fmt = 1; | |
1163 | mutex_unlock(&ov965x->lock); | |
1164 | return ret; | |
1165 | } | |
1166 | ||
f7234138 | 1167 | static int ov965x_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, |
84a15ded SN |
1168 | struct v4l2_subdev_format *fmt) |
1169 | { | |
1170 | struct ov965x *ov965x = to_ov965x(sd); | |
1171 | struct v4l2_mbus_framefmt *mf; | |
1172 | ||
1173 | if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { | |
f7234138 | 1174 | mf = v4l2_subdev_get_try_format(sd, cfg, 0); |
84a15ded SN |
1175 | fmt->format = *mf; |
1176 | return 0; | |
1177 | } | |
1178 | ||
1179 | mutex_lock(&ov965x->lock); | |
1180 | fmt->format = ov965x->format; | |
1181 | mutex_unlock(&ov965x->lock); | |
1182 | ||
1183 | return 0; | |
1184 | } | |
1185 | ||
1186 | static void __ov965x_try_frame_size(struct v4l2_mbus_framefmt *mf, | |
1187 | const struct ov965x_framesize **size) | |
1188 | { | |
1189 | const struct ov965x_framesize *fsize = &ov965x_framesizes[0], | |
1190 | *match = NULL; | |
1191 | int i = ARRAY_SIZE(ov965x_framesizes); | |
1192 | unsigned int min_err = UINT_MAX; | |
1193 | ||
1194 | while (i--) { | |
1195 | int err = abs(fsize->width - mf->width) | |
1196 | + abs(fsize->height - mf->height); | |
1197 | if (err < min_err) { | |
1198 | min_err = err; | |
1199 | match = fsize; | |
1200 | } | |
1201 | fsize++; | |
1202 | } | |
1203 | if (!match) | |
1204 | match = &ov965x_framesizes[0]; | |
1205 | mf->width = match->width; | |
1206 | mf->height = match->height; | |
1207 | if (size) | |
1208 | *size = match; | |
1209 | } | |
1210 | ||
f7234138 | 1211 | static int ov965x_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, |
84a15ded SN |
1212 | struct v4l2_subdev_format *fmt) |
1213 | { | |
1214 | unsigned int index = ARRAY_SIZE(ov965x_formats); | |
1215 | struct v4l2_mbus_framefmt *mf = &fmt->format; | |
1216 | struct ov965x *ov965x = to_ov965x(sd); | |
1217 | const struct ov965x_framesize *size = NULL; | |
1218 | int ret = 0; | |
1219 | ||
1220 | __ov965x_try_frame_size(mf, &size); | |
1221 | ||
1222 | while (--index) | |
1223 | if (ov965x_formats[index].code == mf->code) | |
1224 | break; | |
1225 | ||
1226 | mf->colorspace = V4L2_COLORSPACE_JPEG; | |
1227 | mf->code = ov965x_formats[index].code; | |
1228 | mf->field = V4L2_FIELD_NONE; | |
1229 | ||
1230 | mutex_lock(&ov965x->lock); | |
1231 | ||
1232 | if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { | |
f7234138 HV |
1233 | if (cfg != NULL) { |
1234 | mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad); | |
84a15ded SN |
1235 | *mf = fmt->format; |
1236 | } | |
1237 | } else { | |
1238 | if (ov965x->streaming) { | |
1239 | ret = -EBUSY; | |
1240 | } else { | |
1241 | ov965x->frame_size = size; | |
1242 | ov965x->format = fmt->format; | |
1243 | ov965x->tslb_reg = ov965x_formats[index].tslb_reg; | |
1244 | ov965x->apply_frame_fmt = 1; | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | if (!ret && fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { | |
1249 | struct v4l2_subdev_frame_interval fiv = { | |
1250 | .interval = { 0, 1 } | |
1251 | }; | |
1252 | /* Reset to minimum possible frame interval */ | |
1253 | __ov965x_set_frame_interval(ov965x, &fiv); | |
1254 | } | |
1255 | mutex_unlock(&ov965x->lock); | |
1256 | ||
1257 | if (!ret) | |
1258 | ov965x_update_exposure_ctrl(ov965x); | |
1259 | ||
1260 | return ret; | |
1261 | } | |
1262 | ||
1263 | static int ov965x_set_frame_size(struct ov965x *ov965x) | |
1264 | { | |
1265 | int i, ret = 0; | |
1266 | ||
1267 | for (i = 0; ret == 0 && i < NUM_FMT_REGS; i++) | |
1268 | ret = ov965x_write(ov965x->client, frame_size_reg_addr[i], | |
1269 | ov965x->frame_size->regs[i]); | |
1270 | return ret; | |
1271 | } | |
1272 | ||
1273 | static int __ov965x_set_params(struct ov965x *ov965x) | |
1274 | { | |
1275 | struct i2c_client *client = ov965x->client; | |
1276 | struct ov965x_ctrls *ctrls = &ov965x->ctrls; | |
1277 | int ret = 0; | |
1278 | u8 reg; | |
1279 | ||
1280 | if (ov965x->apply_frame_fmt) { | |
1281 | reg = DEF_CLKRC + ov965x->fiv->clkrc_div; | |
1282 | ret = ov965x_write(client, REG_CLKRC, reg); | |
1283 | if (ret < 0) | |
1284 | return ret; | |
1285 | ret = ov965x_set_frame_size(ov965x); | |
1286 | if (ret < 0) | |
1287 | return ret; | |
1288 | ret = ov965x_read(client, REG_TSLB, ®); | |
1289 | if (ret < 0) | |
1290 | return ret; | |
1291 | reg &= ~TSLB_YUYV_MASK; | |
1292 | reg |= ov965x->tslb_reg; | |
1293 | ret = ov965x_write(client, REG_TSLB, reg); | |
1294 | if (ret < 0) | |
1295 | return ret; | |
1296 | } | |
1297 | ret = ov965x_set_default_gamma_curve(ov965x); | |
1298 | if (ret < 0) | |
1299 | return ret; | |
1300 | ret = ov965x_set_color_matrix(ov965x); | |
1301 | if (ret < 0) | |
1302 | return ret; | |
1303 | /* | |
1304 | * Select manual banding filter, the filter will | |
1305 | * be enabled further if required. | |
1306 | */ | |
1307 | ret = ov965x_read(client, REG_COM11, ®); | |
1308 | if (!ret) | |
1309 | reg |= COM11_BANDING; | |
1310 | ret = ov965x_write(client, REG_COM11, reg); | |
1311 | if (ret < 0) | |
1312 | return ret; | |
1313 | /* | |
1314 | * Banding filter (REG_MBD value) needs to match selected | |
1315 | * resolution and frame rate, so it's always updated here. | |
1316 | */ | |
1317 | return ov965x_set_banding_filter(ov965x, ctrls->light_freq->val); | |
1318 | } | |
1319 | ||
1320 | static int ov965x_s_stream(struct v4l2_subdev *sd, int on) | |
1321 | { | |
1322 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
1323 | struct ov965x *ov965x = to_ov965x(sd); | |
1324 | struct ov965x_ctrls *ctrls = &ov965x->ctrls; | |
1325 | int ret = 0; | |
1326 | ||
1327 | v4l2_dbg(1, debug, client, "%s: on: %d\n", __func__, on); | |
1328 | ||
1329 | mutex_lock(&ov965x->lock); | |
1330 | if (ov965x->streaming == !on) { | |
1331 | if (on) | |
1332 | ret = __ov965x_set_params(ov965x); | |
1333 | ||
1334 | if (!ret && ctrls->update) { | |
1335 | /* | |
1336 | * ov965x_s_ctrl callback takes the mutex | |
1337 | * so it needs to be released here. | |
1338 | */ | |
1339 | mutex_unlock(&ov965x->lock); | |
1340 | ret = v4l2_ctrl_handler_setup(&ctrls->handler); | |
1341 | ||
1342 | mutex_lock(&ov965x->lock); | |
1343 | if (!ret) | |
1344 | ctrls->update = 0; | |
1345 | } | |
1346 | if (!ret) | |
1347 | ret = ov965x_write(client, REG_COM2, | |
1348 | on ? 0x01 : 0x11); | |
1349 | } | |
1350 | if (!ret) | |
1351 | ov965x->streaming += on ? 1 : -1; | |
1352 | ||
1353 | WARN_ON(ov965x->streaming < 0); | |
1354 | mutex_unlock(&ov965x->lock); | |
1355 | ||
1356 | return ret; | |
1357 | } | |
1358 | ||
1359 | /* | |
1360 | * V4L2 subdev internal operations | |
1361 | */ | |
1362 | static int ov965x_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) | |
1363 | { | |
f7234138 | 1364 | struct v4l2_mbus_framefmt *mf = v4l2_subdev_get_try_format(sd, fh->pad, 0); |
84a15ded SN |
1365 | |
1366 | ov965x_get_default_format(mf); | |
1367 | return 0; | |
1368 | } | |
1369 | ||
1370 | static const struct v4l2_subdev_pad_ops ov965x_pad_ops = { | |
1371 | .enum_mbus_code = ov965x_enum_mbus_code, | |
1372 | .enum_frame_size = ov965x_enum_frame_sizes, | |
1373 | .get_fmt = ov965x_get_fmt, | |
1374 | .set_fmt = ov965x_set_fmt, | |
1375 | }; | |
1376 | ||
1377 | static const struct v4l2_subdev_video_ops ov965x_video_ops = { | |
1378 | .s_stream = ov965x_s_stream, | |
1379 | .g_frame_interval = ov965x_g_frame_interval, | |
1380 | .s_frame_interval = ov965x_s_frame_interval, | |
1381 | ||
1382 | }; | |
1383 | ||
1384 | static const struct v4l2_subdev_internal_ops ov965x_sd_internal_ops = { | |
1385 | .open = ov965x_open, | |
1386 | }; | |
1387 | ||
1388 | static const struct v4l2_subdev_core_ops ov965x_core_ops = { | |
1389 | .s_power = ov965x_s_power, | |
1390 | .log_status = v4l2_ctrl_subdev_log_status, | |
1391 | .subscribe_event = v4l2_ctrl_subdev_subscribe_event, | |
1392 | .unsubscribe_event = v4l2_event_subdev_unsubscribe, | |
1393 | }; | |
1394 | ||
1395 | static const struct v4l2_subdev_ops ov965x_subdev_ops = { | |
1396 | .core = &ov965x_core_ops, | |
1397 | .pad = &ov965x_pad_ops, | |
1398 | .video = &ov965x_video_ops, | |
1399 | }; | |
1400 | ||
1401 | /* | |
1402 | * Reset and power down GPIOs configuration | |
1403 | */ | |
1404 | static int ov965x_configure_gpios(struct ov965x *ov965x, | |
1405 | const struct ov9650_platform_data *pdata) | |
1406 | { | |
1407 | int ret, i; | |
1408 | ||
1409 | ov965x->gpios[GPIO_PWDN] = pdata->gpio_pwdn; | |
1410 | ov965x->gpios[GPIO_RST] = pdata->gpio_reset; | |
1411 | ||
1412 | for (i = 0; i < ARRAY_SIZE(ov965x->gpios); i++) { | |
1413 | int gpio = ov965x->gpios[i]; | |
1414 | ||
1415 | if (!gpio_is_valid(gpio)) | |
1416 | continue; | |
1417 | ret = devm_gpio_request_one(&ov965x->client->dev, gpio, | |
1418 | GPIOF_OUT_INIT_HIGH, "OV965X"); | |
1419 | if (ret < 0) | |
1420 | return ret; | |
1421 | v4l2_dbg(1, debug, &ov965x->sd, "set gpio %d to 1\n", gpio); | |
1422 | ||
1423 | gpio_set_value(gpio, 1); | |
1424 | gpio_export(gpio, 0); | |
1425 | ov965x->gpios[i] = gpio; | |
1426 | } | |
1427 | ||
1428 | return 0; | |
1429 | } | |
1430 | ||
1431 | static int ov965x_detect_sensor(struct v4l2_subdev *sd) | |
1432 | { | |
1433 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
1434 | struct ov965x *ov965x = to_ov965x(sd); | |
1435 | u8 pid, ver; | |
1436 | int ret; | |
1437 | ||
1438 | mutex_lock(&ov965x->lock); | |
1439 | __ov965x_set_power(ov965x, 1); | |
1440 | usleep_range(25000, 26000); | |
1441 | ||
1442 | /* Check sensor revision */ | |
1443 | ret = ov965x_read(client, REG_PID, &pid); | |
1444 | if (!ret) | |
1445 | ret = ov965x_read(client, REG_VER, &ver); | |
1446 | ||
1447 | __ov965x_set_power(ov965x, 0); | |
1448 | ||
1449 | if (!ret) { | |
1450 | ov965x->id = OV965X_ID(pid, ver); | |
1451 | if (ov965x->id == OV9650_ID || ov965x->id == OV9652_ID) { | |
1452 | v4l2_info(sd, "Found OV%04X sensor\n", ov965x->id); | |
1453 | } else { | |
1454 | v4l2_err(sd, "Sensor detection failed (%04X, %d)\n", | |
1455 | ov965x->id, ret); | |
1456 | ret = -ENODEV; | |
1457 | } | |
1458 | } | |
1459 | mutex_unlock(&ov965x->lock); | |
1460 | ||
1461 | return ret; | |
1462 | } | |
1463 | ||
1464 | static int ov965x_probe(struct i2c_client *client, | |
1465 | const struct i2c_device_id *id) | |
1466 | { | |
1467 | const struct ov9650_platform_data *pdata = client->dev.platform_data; | |
1468 | struct v4l2_subdev *sd; | |
1469 | struct ov965x *ov965x; | |
1470 | int ret; | |
1471 | ||
1472 | if (pdata == NULL) { | |
1473 | dev_err(&client->dev, "platform data not specified\n"); | |
1474 | return -EINVAL; | |
1475 | } | |
1476 | ||
1477 | if (pdata->mclk_frequency == 0) { | |
1478 | dev_err(&client->dev, "MCLK frequency not specified\n"); | |
1479 | return -EINVAL; | |
1480 | } | |
1481 | ||
1482 | ov965x = devm_kzalloc(&client->dev, sizeof(*ov965x), GFP_KERNEL); | |
1483 | if (!ov965x) | |
1484 | return -ENOMEM; | |
1485 | ||
1486 | mutex_init(&ov965x->lock); | |
1487 | ov965x->client = client; | |
1488 | ov965x->mclk_frequency = pdata->mclk_frequency; | |
1489 | ||
1490 | sd = &ov965x->sd; | |
1491 | v4l2_i2c_subdev_init(sd, client, &ov965x_subdev_ops); | |
1492 | strlcpy(sd->name, DRIVER_NAME, sizeof(sd->name)); | |
1493 | ||
1494 | sd->internal_ops = &ov965x_sd_internal_ops; | |
1495 | sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | | |
1496 | V4L2_SUBDEV_FL_HAS_EVENTS; | |
1497 | ||
1498 | ret = ov965x_configure_gpios(ov965x, pdata); | |
1499 | if (ret < 0) | |
1500 | return ret; | |
1501 | ||
1502 | ov965x->pad.flags = MEDIA_PAD_FL_SOURCE; | |
1503 | sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; | |
1504 | ret = media_entity_init(&sd->entity, 1, &ov965x->pad, 0); | |
1505 | if (ret < 0) | |
1506 | return ret; | |
1507 | ||
1508 | ret = ov965x_initialize_controls(ov965x); | |
1509 | if (ret < 0) | |
1510 | goto err_me; | |
1511 | ||
1512 | ov965x_get_default_format(&ov965x->format); | |
1513 | ov965x->frame_size = &ov965x_framesizes[0]; | |
1514 | ov965x->fiv = &ov965x_intervals[0]; | |
1515 | ||
1516 | ret = ov965x_detect_sensor(sd); | |
1517 | if (ret < 0) | |
1518 | goto err_ctrls; | |
1519 | ||
1520 | /* Update exposure time min/max to match frame format */ | |
1521 | ov965x_update_exposure_ctrl(ov965x); | |
1522 | ||
1523 | return 0; | |
1524 | err_ctrls: | |
1525 | v4l2_ctrl_handler_free(sd->ctrl_handler); | |
1526 | err_me: | |
1527 | media_entity_cleanup(&sd->entity); | |
1528 | return ret; | |
1529 | } | |
1530 | ||
1531 | static int ov965x_remove(struct i2c_client *client) | |
1532 | { | |
1533 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | |
1534 | ||
1535 | v4l2_device_unregister_subdev(sd); | |
1536 | v4l2_ctrl_handler_free(sd->ctrl_handler); | |
1537 | media_entity_cleanup(&sd->entity); | |
1538 | ||
1539 | return 0; | |
1540 | } | |
1541 | ||
1542 | static const struct i2c_device_id ov965x_id[] = { | |
1543 | { "OV9650", 0 }, | |
1544 | { "OV9652", 0 }, | |
1545 | { /* sentinel */ } | |
1546 | }; | |
1547 | MODULE_DEVICE_TABLE(i2c, ov965x_id); | |
1548 | ||
1549 | static struct i2c_driver ov965x_i2c_driver = { | |
1550 | .driver = { | |
1551 | .name = DRIVER_NAME, | |
1552 | }, | |
1553 | .probe = ov965x_probe, | |
1554 | .remove = ov965x_remove, | |
1555 | .id_table = ov965x_id, | |
1556 | }; | |
1557 | ||
1558 | module_i2c_driver(ov965x_i2c_driver); | |
1559 | ||
1560 | MODULE_AUTHOR("Sylwester Nawrocki <sylvester.nawrocki@gmail.com>"); | |
1561 | MODULE_DESCRIPTION("OV9650/OV9652 CMOS Image Sensor driver"); | |
1562 | MODULE_LICENSE("GPL"); |