Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 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> |
Javier Martinez Canillas | 6dca6cf | 2016-09-08 10:05:40 -0300 | [diff] [blame] | 26 | #include <media/v4l2-async.h> |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 27 | #include <media/v4l2-ctrls.h> |
| 28 | #include <media/v4l2-device.h> |
| 29 | #include <media/v4l2-event.h> |
| 30 | #include <media/v4l2-image-sizes.h> |
| 31 | #include <media/v4l2-subdev.h> |
| 32 | #include <media/v4l2-mediabus.h> |
Mauro Carvalho Chehab | b5dcee2 | 2015-11-10 12:01:44 -0200 | [diff] [blame] | 33 | #include <media/i2c/ov9650.h> |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 34 | |
| 35 | static int debug; |
| 36 | module_param(debug, int, 0644); |
| 37 | MODULE_PARM_DESC(debug, "Debug level (0-2)"); |
| 38 | |
| 39 | #define DRIVER_NAME "OV9650" |
| 40 | |
| 41 | /* |
| 42 | * OV9650/OV9652 register definitions |
| 43 | */ |
| 44 | #define REG_GAIN 0x00 /* Gain control, AGC[7:0] */ |
| 45 | #define REG_BLUE 0x01 /* AWB - Blue chanel gain */ |
| 46 | #define REG_RED 0x02 /* AWB - Red chanel gain */ |
| 47 | #define REG_VREF 0x03 /* [7:6] - AGC[9:8], [5:3]/[2:0] */ |
| 48 | #define VREF_GAIN_MASK 0xc0 /* - VREF end/start low 3 bits */ |
| 49 | #define REG_COM1 0x04 |
| 50 | #define COM1_CCIR656 0x40 |
| 51 | #define REG_B_AVE 0x05 |
| 52 | #define REG_GB_AVE 0x06 |
| 53 | #define REG_GR_AVE 0x07 |
| 54 | #define REG_R_AVE 0x08 |
| 55 | #define REG_COM2 0x09 |
| 56 | #define REG_PID 0x0a /* Product ID MSB */ |
| 57 | #define REG_VER 0x0b /* Product ID LSB */ |
| 58 | #define REG_COM3 0x0c |
| 59 | #define COM3_SWAP 0x40 |
| 60 | #define COM3_VARIOPIXEL1 0x04 |
| 61 | #define REG_COM4 0x0d /* Vario Pixels */ |
| 62 | #define COM4_VARIOPIXEL2 0x80 |
| 63 | #define REG_COM5 0x0e /* System clock options */ |
| 64 | #define COM5_SLAVE_MODE 0x10 |
| 65 | #define COM5_SYSTEMCLOCK48MHZ 0x80 |
| 66 | #define REG_COM6 0x0f /* HREF & ADBLC options */ |
| 67 | #define REG_AECH 0x10 /* Exposure value, AEC[9:2] */ |
| 68 | #define REG_CLKRC 0x11 /* Clock control */ |
| 69 | #define CLK_EXT 0x40 /* Use external clock directly */ |
| 70 | #define CLK_SCALE 0x3f /* Mask for internal clock scale */ |
| 71 | #define REG_COM7 0x12 /* SCCB reset, output format */ |
| 72 | #define COM7_RESET 0x80 |
| 73 | #define COM7_FMT_MASK 0x38 |
| 74 | #define COM7_FMT_VGA 0x40 |
| 75 | #define COM7_FMT_CIF 0x20 |
| 76 | #define COM7_FMT_QVGA 0x10 |
| 77 | #define COM7_FMT_QCIF 0x08 |
| 78 | #define COM7_RGB 0x04 |
| 79 | #define COM7_YUV 0x00 |
| 80 | #define COM7_BAYER 0x01 |
| 81 | #define COM7_PBAYER 0x05 |
| 82 | #define REG_COM8 0x13 /* AGC/AEC options */ |
| 83 | #define COM8_FASTAEC 0x80 /* Enable fast AGC/AEC */ |
| 84 | #define COM8_AECSTEP 0x40 /* Unlimited AEC step size */ |
| 85 | #define COM8_BFILT 0x20 /* Band filter enable */ |
| 86 | #define COM8_AGC 0x04 /* Auto gain enable */ |
| 87 | #define COM8_AWB 0x02 /* White balance enable */ |
| 88 | #define COM8_AEC 0x01 /* Auto exposure enable */ |
| 89 | #define REG_COM9 0x14 /* Gain ceiling */ |
| 90 | #define COM9_GAIN_CEIL_MASK 0x70 /* */ |
| 91 | #define REG_COM10 0x15 /* PCLK, HREF, HSYNC signals polarity */ |
| 92 | #define COM10_HSYNC 0x40 /* HSYNC instead of HREF */ |
| 93 | #define COM10_PCLK_HB 0x20 /* Suppress PCLK on horiz blank */ |
| 94 | #define COM10_HREF_REV 0x08 /* Reverse HREF */ |
| 95 | #define COM10_VS_LEAD 0x04 /* VSYNC on clock leading edge */ |
| 96 | #define COM10_VS_NEG 0x02 /* VSYNC negative */ |
| 97 | #define COM10_HS_NEG 0x01 /* HSYNC negative */ |
| 98 | #define REG_HSTART 0x17 /* Horiz start high bits */ |
| 99 | #define REG_HSTOP 0x18 /* Horiz stop high bits */ |
| 100 | #define REG_VSTART 0x19 /* Vert start high bits */ |
| 101 | #define REG_VSTOP 0x1a /* Vert stop high bits */ |
| 102 | #define REG_PSHFT 0x1b /* Pixel delay after HREF */ |
| 103 | #define REG_MIDH 0x1c /* Manufacturer ID MSB */ |
| 104 | #define REG_MIDL 0x1d /* Manufufacturer ID LSB */ |
| 105 | #define REG_MVFP 0x1e /* Image mirror/flip */ |
| 106 | #define MVFP_MIRROR 0x20 /* Mirror image */ |
| 107 | #define MVFP_FLIP 0x10 /* Vertical flip */ |
| 108 | #define REG_BOS 0x20 /* B channel Offset */ |
| 109 | #define REG_GBOS 0x21 /* Gb channel Offset */ |
| 110 | #define REG_GROS 0x22 /* Gr channel Offset */ |
| 111 | #define REG_ROS 0x23 /* R channel Offset */ |
| 112 | #define REG_AEW 0x24 /* AGC upper limit */ |
| 113 | #define REG_AEB 0x25 /* AGC lower limit */ |
| 114 | #define REG_VPT 0x26 /* AGC/AEC fast mode op region */ |
| 115 | #define REG_BBIAS 0x27 /* B channel output bias */ |
| 116 | #define REG_GBBIAS 0x28 /* Gb channel output bias */ |
| 117 | #define REG_GRCOM 0x29 /* Analog BLC & regulator */ |
| 118 | #define REG_EXHCH 0x2a /* Dummy pixel insert MSB */ |
| 119 | #define REG_EXHCL 0x2b /* Dummy pixel insert LSB */ |
| 120 | #define REG_RBIAS 0x2c /* R channel output bias */ |
| 121 | #define REG_ADVFL 0x2d /* LSB of dummy line insert */ |
| 122 | #define REG_ADVFH 0x2e /* MSB of dummy line insert */ |
| 123 | #define REG_YAVE 0x2f /* Y/G channel average value */ |
| 124 | #define REG_HSYST 0x30 /* HSYNC rising edge delay LSB*/ |
| 125 | #define REG_HSYEN 0x31 /* HSYNC falling edge delay LSB*/ |
| 126 | #define REG_HREF 0x32 /* HREF pieces */ |
| 127 | #define REG_CHLF 0x33 /* reserved */ |
| 128 | #define REG_ADC 0x37 /* reserved */ |
| 129 | #define REG_ACOM 0x38 /* reserved */ |
| 130 | #define REG_OFON 0x39 /* Power down register */ |
| 131 | #define OFON_PWRDN 0x08 /* Power down bit */ |
| 132 | #define REG_TSLB 0x3a /* YUVU format */ |
| 133 | #define TSLB_YUYV_MASK 0x0c /* UYVY or VYUY - see com13 */ |
| 134 | #define REG_COM11 0x3b /* Night mode, banding filter enable */ |
| 135 | #define COM11_NIGHT 0x80 /* Night mode enable */ |
| 136 | #define COM11_NMFR 0x60 /* Two bit NM frame rate */ |
| 137 | #define COM11_BANDING 0x01 /* Banding filter */ |
| 138 | #define COM11_AEC_REF_MASK 0x18 /* AEC reference area selection */ |
| 139 | #define REG_COM12 0x3c /* HREF option, UV average */ |
| 140 | #define COM12_HREF 0x80 /* HREF always */ |
| 141 | #define REG_COM13 0x3d /* Gamma selection, Color matrix en. */ |
| 142 | #define COM13_GAMMA 0x80 /* Gamma enable */ |
| 143 | #define COM13_UVSAT 0x40 /* UV saturation auto adjustment */ |
| 144 | #define COM13_UVSWAP 0x01 /* V before U - w/TSLB */ |
| 145 | #define REG_COM14 0x3e /* Edge enhancement options */ |
| 146 | #define COM14_EDGE_EN 0x02 |
| 147 | #define COM14_EEF_X2 0x01 |
| 148 | #define REG_EDGE 0x3f /* Edge enhancement factor */ |
| 149 | #define EDGE_FACTOR_MASK 0x0f |
| 150 | #define REG_COM15 0x40 /* Output range, RGB 555/565 */ |
| 151 | #define COM15_R10F0 0x00 /* Data range 10 to F0 */ |
| 152 | #define COM15_R01FE 0x80 /* 01 to FE */ |
| 153 | #define COM15_R00FF 0xc0 /* 00 to FF */ |
| 154 | #define COM15_RGB565 0x10 /* RGB565 output */ |
| 155 | #define COM15_RGB555 0x30 /* RGB555 output */ |
| 156 | #define COM15_SWAPRB 0x04 /* Swap R&B */ |
| 157 | #define REG_COM16 0x41 /* Color matrix coeff options */ |
| 158 | #define REG_COM17 0x42 /* Single frame out, banding filter */ |
| 159 | /* n = 1...9, 0x4f..0x57 */ |
| 160 | #define REG_MTX(__n) (0x4f + (__n) - 1) |
| 161 | #define REG_MTXS 0x58 |
| 162 | /* Lens Correction Option 1...5, __n = 0...5 */ |
| 163 | #define REG_LCC(__n) (0x62 + (__n) - 1) |
| 164 | #define LCC5_LCC_ENABLE 0x01 /* LCC5, enable lens correction */ |
| 165 | #define LCC5_LCC_COLOR 0x04 |
| 166 | #define REG_MANU 0x67 /* Manual U value */ |
| 167 | #define REG_MANV 0x68 /* Manual V value */ |
| 168 | #define REG_HV 0x69 /* Manual banding filter MSB */ |
| 169 | #define REG_MBD 0x6a /* Manual banding filter value */ |
| 170 | #define REG_DBLV 0x6b /* reserved */ |
| 171 | #define REG_GSP 0x6c /* Gamma curve */ |
| 172 | #define GSP_LEN 15 |
| 173 | #define REG_GST 0x7c /* Gamma curve */ |
| 174 | #define GST_LEN 15 |
| 175 | #define REG_COM21 0x8b |
| 176 | #define REG_COM22 0x8c /* Edge enhancement, denoising */ |
| 177 | #define COM22_WHTPCOR 0x02 /* White pixel correction enable */ |
| 178 | #define COM22_WHTPCOROPT 0x01 /* White pixel correction option */ |
| 179 | #define COM22_DENOISE 0x10 /* White pixel correction option */ |
| 180 | #define REG_COM23 0x8d /* Color bar test, color gain */ |
| 181 | #define COM23_TEST_MODE 0x10 |
| 182 | #define REG_DBLC1 0x8f /* Digital BLC */ |
| 183 | #define REG_DBLC_B 0x90 /* Digital BLC B channel offset */ |
| 184 | #define REG_DBLC_R 0x91 /* Digital BLC R channel offset */ |
| 185 | #define REG_DM_LNL 0x92 /* Dummy line low 8 bits */ |
| 186 | #define REG_DM_LNH 0x93 /* Dummy line high 8 bits */ |
| 187 | #define REG_LCCFB 0x9d /* Lens Correction B channel */ |
| 188 | #define REG_LCCFR 0x9e /* Lens Correction R channel */ |
| 189 | #define REG_DBLC_GB 0x9f /* Digital BLC GB chan offset */ |
| 190 | #define REG_DBLC_GR 0xa0 /* Digital BLC GR chan offset */ |
| 191 | #define REG_AECHM 0xa1 /* Exposure value - bits AEC[15:10] */ |
| 192 | #define REG_BD50ST 0xa2 /* Banding filter value for 50Hz */ |
| 193 | #define REG_BD60ST 0xa3 /* Banding filter value for 60Hz */ |
| 194 | #define REG_NULL 0xff /* Array end token */ |
| 195 | |
| 196 | #define DEF_CLKRC 0x80 |
| 197 | |
| 198 | #define OV965X_ID(_msb, _lsb) ((_msb) << 8 | (_lsb)) |
| 199 | #define OV9650_ID 0x9650 |
| 200 | #define OV9652_ID 0x9652 |
| 201 | |
| 202 | struct ov965x_ctrls { |
| 203 | struct v4l2_ctrl_handler handler; |
| 204 | struct { |
| 205 | struct v4l2_ctrl *auto_exp; |
| 206 | struct v4l2_ctrl *exposure; |
| 207 | }; |
| 208 | struct { |
| 209 | struct v4l2_ctrl *auto_wb; |
| 210 | struct v4l2_ctrl *blue_balance; |
| 211 | struct v4l2_ctrl *red_balance; |
| 212 | }; |
| 213 | struct { |
| 214 | struct v4l2_ctrl *hflip; |
| 215 | struct v4l2_ctrl *vflip; |
| 216 | }; |
| 217 | struct { |
| 218 | struct v4l2_ctrl *auto_gain; |
| 219 | struct v4l2_ctrl *gain; |
| 220 | }; |
| 221 | struct v4l2_ctrl *brightness; |
| 222 | struct v4l2_ctrl *saturation; |
| 223 | struct v4l2_ctrl *sharpness; |
| 224 | struct v4l2_ctrl *light_freq; |
| 225 | u8 update; |
| 226 | }; |
| 227 | |
| 228 | struct ov965x_framesize { |
| 229 | u16 width; |
| 230 | u16 height; |
| 231 | u16 max_exp_lines; |
| 232 | const u8 *regs; |
| 233 | }; |
| 234 | |
| 235 | struct ov965x_interval { |
| 236 | struct v4l2_fract interval; |
| 237 | /* Maximum resolution for this interval */ |
| 238 | struct v4l2_frmsize_discrete size; |
| 239 | u8 clkrc_div; |
| 240 | }; |
| 241 | |
| 242 | enum gpio_id { |
| 243 | GPIO_PWDN, |
| 244 | GPIO_RST, |
| 245 | NUM_GPIOS, |
| 246 | }; |
| 247 | |
| 248 | struct ov965x { |
| 249 | struct v4l2_subdev sd; |
| 250 | struct media_pad pad; |
| 251 | enum v4l2_mbus_type bus_type; |
| 252 | int gpios[NUM_GPIOS]; |
| 253 | /* External master clock frequency */ |
| 254 | unsigned long mclk_frequency; |
| 255 | |
| 256 | /* Protects the struct fields below */ |
| 257 | struct mutex lock; |
| 258 | |
| 259 | struct i2c_client *client; |
| 260 | |
| 261 | /* Exposure row interval in us */ |
| 262 | unsigned int exp_row_interval; |
| 263 | |
| 264 | unsigned short id; |
| 265 | const struct ov965x_framesize *frame_size; |
| 266 | /* YUYV sequence (pixel format) control register */ |
| 267 | u8 tslb_reg; |
| 268 | struct v4l2_mbus_framefmt format; |
| 269 | |
| 270 | struct ov965x_ctrls ctrls; |
| 271 | /* Pointer to frame rate control data structure */ |
| 272 | const struct ov965x_interval *fiv; |
| 273 | |
| 274 | int streaming; |
| 275 | int power; |
| 276 | |
| 277 | u8 apply_frame_fmt; |
| 278 | }; |
| 279 | |
| 280 | struct i2c_rv { |
| 281 | u8 addr; |
| 282 | u8 value; |
| 283 | }; |
| 284 | |
| 285 | static const struct i2c_rv ov965x_init_regs[] = { |
| 286 | { REG_COM2, 0x10 }, /* Set soft sleep mode */ |
| 287 | { REG_COM5, 0x00 }, /* System clock options */ |
| 288 | { REG_COM2, 0x01 }, /* Output drive, soft sleep mode */ |
| 289 | { REG_COM10, 0x00 }, /* Slave mode, HREF vs HSYNC, signals negate */ |
| 290 | { REG_EDGE, 0xa6 }, /* Edge enhancement treshhold and factor */ |
| 291 | { REG_COM16, 0x02 }, /* Color matrix coeff double option */ |
| 292 | { REG_COM17, 0x08 }, /* Single frame out, banding filter */ |
| 293 | { 0x16, 0x06 }, |
| 294 | { REG_CHLF, 0xc0 }, /* Reserved */ |
| 295 | { 0x34, 0xbf }, |
| 296 | { 0xa8, 0x80 }, |
| 297 | { 0x96, 0x04 }, |
| 298 | { 0x8e, 0x00 }, |
| 299 | { REG_COM12, 0x77 }, /* HREF option, UV average */ |
| 300 | { 0x8b, 0x06 }, |
| 301 | { 0x35, 0x91 }, |
| 302 | { 0x94, 0x88 }, |
| 303 | { 0x95, 0x88 }, |
| 304 | { REG_COM15, 0xc1 }, /* Output range, RGB 555/565 */ |
| 305 | { REG_GRCOM, 0x2f }, /* Analog BLC & regulator */ |
| 306 | { REG_COM6, 0x43 }, /* HREF & ADBLC options */ |
| 307 | { REG_COM8, 0xe5 }, /* AGC/AEC options */ |
| 308 | { REG_COM13, 0x90 }, /* Gamma selection, colour matrix, UV delay */ |
| 309 | { REG_HV, 0x80 }, /* Manual banding filter MSB */ |
| 310 | { 0x5c, 0x96 }, /* Reserved up to 0xa5 */ |
| 311 | { 0x5d, 0x96 }, |
| 312 | { 0x5e, 0x10 }, |
| 313 | { 0x59, 0xeb }, |
| 314 | { 0x5a, 0x9c }, |
| 315 | { 0x5b, 0x55 }, |
| 316 | { 0x43, 0xf0 }, |
| 317 | { 0x44, 0x10 }, |
| 318 | { 0x45, 0x55 }, |
| 319 | { 0x46, 0x86 }, |
| 320 | { 0x47, 0x64 }, |
| 321 | { 0x48, 0x86 }, |
| 322 | { 0x5f, 0xe0 }, |
| 323 | { 0x60, 0x8c }, |
| 324 | { 0x61, 0x20 }, |
| 325 | { 0xa5, 0xd9 }, |
| 326 | { 0xa4, 0x74 }, /* reserved */ |
| 327 | { REG_COM23, 0x02 }, /* Color gain analog/_digital_ */ |
| 328 | { REG_COM8, 0xe7 }, /* Enable AEC, AWB, AEC */ |
| 329 | { REG_COM22, 0x23 }, /* Edge enhancement, denoising */ |
| 330 | { 0xa9, 0xb8 }, |
| 331 | { 0xaa, 0x92 }, |
| 332 | { 0xab, 0x0a }, |
| 333 | { REG_DBLC1, 0xdf }, /* Digital BLC */ |
| 334 | { REG_DBLC_B, 0x00 }, /* Digital BLC B chan offset */ |
| 335 | { REG_DBLC_R, 0x00 }, /* Digital BLC R chan offset */ |
| 336 | { REG_DBLC_GB, 0x00 }, /* Digital BLC GB chan offset */ |
| 337 | { REG_DBLC_GR, 0x00 }, |
| 338 | { REG_COM9, 0x3a }, /* Gain ceiling 16x */ |
| 339 | { REG_NULL, 0 } |
| 340 | }; |
| 341 | |
| 342 | #define NUM_FMT_REGS 14 |
| 343 | /* |
| 344 | * COM7, COM3, COM4, HSTART, HSTOP, HREF, VSTART, VSTOP, VREF, |
| 345 | * EXHCH, EXHCL, ADC, OCOM, OFON |
| 346 | */ |
| 347 | static const u8 frame_size_reg_addr[NUM_FMT_REGS] = { |
| 348 | 0x12, 0x0c, 0x0d, 0x17, 0x18, 0x32, 0x19, 0x1a, 0x03, |
| 349 | 0x2a, 0x2b, 0x37, 0x38, 0x39, |
| 350 | }; |
| 351 | |
| 352 | static const u8 ov965x_sxga_regs[NUM_FMT_REGS] = { |
| 353 | 0x00, 0x00, 0x00, 0x1e, 0xbe, 0xbf, 0x01, 0x81, 0x12, |
| 354 | 0x10, 0x34, 0x81, 0x93, 0x51, |
| 355 | }; |
| 356 | |
| 357 | static const u8 ov965x_vga_regs[NUM_FMT_REGS] = { |
| 358 | 0x40, 0x04, 0x80, 0x26, 0xc6, 0xed, 0x01, 0x3d, 0x00, |
| 359 | 0x10, 0x40, 0x91, 0x12, 0x43, |
| 360 | }; |
| 361 | |
| 362 | /* Determined empirically. */ |
| 363 | static const u8 ov965x_qvga_regs[NUM_FMT_REGS] = { |
| 364 | 0x10, 0x04, 0x80, 0x25, 0xc5, 0xbf, 0x00, 0x80, 0x12, |
| 365 | 0x10, 0x40, 0x91, 0x12, 0x43, |
| 366 | }; |
| 367 | |
| 368 | static const struct ov965x_framesize ov965x_framesizes[] = { |
| 369 | { |
| 370 | .width = SXGA_WIDTH, |
| 371 | .height = SXGA_HEIGHT, |
| 372 | .regs = ov965x_sxga_regs, |
| 373 | .max_exp_lines = 1048, |
| 374 | }, { |
| 375 | .width = VGA_WIDTH, |
| 376 | .height = VGA_HEIGHT, |
| 377 | .regs = ov965x_vga_regs, |
| 378 | .max_exp_lines = 498, |
| 379 | }, { |
| 380 | .width = QVGA_WIDTH, |
| 381 | .height = QVGA_HEIGHT, |
| 382 | .regs = ov965x_qvga_regs, |
| 383 | .max_exp_lines = 248, |
| 384 | }, |
| 385 | }; |
| 386 | |
| 387 | struct ov965x_pixfmt { |
Boris BREZILLON | f5fe58f | 2014-11-10 14:28:29 -0300 | [diff] [blame] | 388 | u32 code; |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 389 | u32 colorspace; |
| 390 | /* REG_TSLB value, only bits [3:2] may be set. */ |
| 391 | u8 tslb_reg; |
| 392 | }; |
| 393 | |
| 394 | static const struct ov965x_pixfmt ov965x_formats[] = { |
Boris BREZILLON | f5fe58f | 2014-11-10 14:28:29 -0300 | [diff] [blame] | 395 | { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG, 0x00}, |
| 396 | { MEDIA_BUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG, 0x04}, |
| 397 | { MEDIA_BUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG, 0x0c}, |
| 398 | { MEDIA_BUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_JPEG, 0x08}, |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 399 | }; |
| 400 | |
| 401 | /* |
| 402 | * This table specifies possible frame resolution and interval |
| 403 | * combinations. Default CLKRC[5:0] divider values are valid |
| 404 | * only for 24 MHz external clock frequency. |
| 405 | */ |
| 406 | static struct ov965x_interval ov965x_intervals[] = { |
| 407 | {{ 100, 625 }, { SXGA_WIDTH, SXGA_HEIGHT }, 0 }, /* 6.25 fps */ |
| 408 | {{ 10, 125 }, { VGA_WIDTH, VGA_HEIGHT }, 1 }, /* 12.5 fps */ |
| 409 | {{ 10, 125 }, { QVGA_WIDTH, QVGA_HEIGHT }, 3 }, /* 12.5 fps */ |
| 410 | {{ 1, 25 }, { VGA_WIDTH, VGA_HEIGHT }, 0 }, /* 25 fps */ |
| 411 | {{ 1, 25 }, { QVGA_WIDTH, QVGA_HEIGHT }, 1 }, /* 25 fps */ |
| 412 | }; |
| 413 | |
| 414 | static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl) |
| 415 | { |
| 416 | return &container_of(ctrl->handler, struct ov965x, ctrls.handler)->sd; |
| 417 | } |
| 418 | |
| 419 | static inline struct ov965x *to_ov965x(struct v4l2_subdev *sd) |
| 420 | { |
| 421 | return container_of(sd, struct ov965x, sd); |
| 422 | } |
| 423 | |
| 424 | static int ov965x_read(struct i2c_client *client, u8 addr, u8 *val) |
| 425 | { |
| 426 | u8 buf = addr; |
| 427 | struct i2c_msg msg = { |
| 428 | .addr = client->addr, |
| 429 | .flags = 0, |
| 430 | .len = 1, |
| 431 | .buf = &buf |
| 432 | }; |
| 433 | int ret; |
| 434 | |
| 435 | ret = i2c_transfer(client->adapter, &msg, 1); |
| 436 | if (ret == 1) { |
| 437 | msg.flags = I2C_M_RD; |
| 438 | ret = i2c_transfer(client->adapter, &msg, 1); |
| 439 | |
| 440 | if (ret == 1) |
| 441 | *val = buf; |
| 442 | } |
| 443 | |
| 444 | v4l2_dbg(2, debug, client, "%s: 0x%02x @ 0x%02x. (%d)\n", |
| 445 | __func__, *val, addr, ret); |
| 446 | |
| 447 | return ret == 1 ? 0 : ret; |
| 448 | } |
| 449 | |
| 450 | static int ov965x_write(struct i2c_client *client, u8 addr, u8 val) |
| 451 | { |
| 452 | u8 buf[2] = { addr, val }; |
| 453 | |
| 454 | int ret = i2c_master_send(client, buf, 2); |
| 455 | |
| 456 | v4l2_dbg(2, debug, client, "%s: 0x%02x @ 0x%02X (%d)\n", |
| 457 | __func__, val, addr, ret); |
| 458 | |
| 459 | return ret == 2 ? 0 : ret; |
| 460 | } |
| 461 | |
| 462 | static int ov965x_write_array(struct i2c_client *client, |
| 463 | const struct i2c_rv *regs) |
| 464 | { |
| 465 | int i, ret = 0; |
| 466 | |
| 467 | for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++) |
| 468 | ret = ov965x_write(client, regs[i].addr, regs[i].value); |
| 469 | |
| 470 | return ret; |
| 471 | } |
| 472 | |
| 473 | static int ov965x_set_default_gamma_curve(struct ov965x *ov965x) |
| 474 | { |
| 475 | static const u8 gamma_curve[] = { |
| 476 | /* Values taken from OV application note. */ |
| 477 | 0x40, 0x30, 0x4b, 0x60, 0x70, 0x70, 0x70, 0x70, |
| 478 | 0x60, 0x60, 0x50, 0x48, 0x3a, 0x2e, 0x28, 0x22, |
| 479 | 0x04, 0x07, 0x10, 0x28, 0x36, 0x44, 0x52, 0x60, |
| 480 | 0x6c, 0x78, 0x8c, 0x9e, 0xbb, 0xd2, 0xe6 |
| 481 | }; |
| 482 | u8 addr = REG_GSP; |
| 483 | unsigned int i; |
| 484 | |
| 485 | for (i = 0; i < ARRAY_SIZE(gamma_curve); i++) { |
| 486 | int ret = ov965x_write(ov965x->client, addr, gamma_curve[i]); |
| 487 | if (ret < 0) |
| 488 | return ret; |
| 489 | addr++; |
| 490 | } |
| 491 | |
| 492 | return 0; |
| 493 | }; |
| 494 | |
| 495 | static int ov965x_set_color_matrix(struct ov965x *ov965x) |
| 496 | { |
| 497 | static const u8 mtx[] = { |
| 498 | /* MTX1..MTX9, MTXS */ |
| 499 | 0x3a, 0x3d, 0x03, 0x12, 0x26, 0x38, 0x40, 0x40, 0x40, 0x0d |
| 500 | }; |
| 501 | u8 addr = REG_MTX(1); |
| 502 | unsigned int i; |
| 503 | |
| 504 | for (i = 0; i < ARRAY_SIZE(mtx); i++) { |
| 505 | int ret = ov965x_write(ov965x->client, addr, mtx[i]); |
| 506 | if (ret < 0) |
| 507 | return ret; |
| 508 | addr++; |
| 509 | } |
| 510 | |
| 511 | return 0; |
| 512 | } |
| 513 | |
| 514 | static void ov965x_gpio_set(int gpio, int val) |
| 515 | { |
| 516 | if (gpio_is_valid(gpio)) |
| 517 | gpio_set_value(gpio, val); |
| 518 | } |
| 519 | |
| 520 | static void __ov965x_set_power(struct ov965x *ov965x, int on) |
| 521 | { |
| 522 | if (on) { |
| 523 | ov965x_gpio_set(ov965x->gpios[GPIO_PWDN], 0); |
| 524 | ov965x_gpio_set(ov965x->gpios[GPIO_RST], 0); |
| 525 | usleep_range(25000, 26000); |
| 526 | } else { |
| 527 | ov965x_gpio_set(ov965x->gpios[GPIO_RST], 1); |
| 528 | ov965x_gpio_set(ov965x->gpios[GPIO_PWDN], 1); |
| 529 | } |
| 530 | |
| 531 | ov965x->streaming = 0; |
| 532 | } |
| 533 | |
| 534 | static int ov965x_s_power(struct v4l2_subdev *sd, int on) |
| 535 | { |
| 536 | struct ov965x *ov965x = to_ov965x(sd); |
| 537 | struct i2c_client *client = ov965x->client; |
| 538 | int ret = 0; |
| 539 | |
| 540 | v4l2_dbg(1, debug, client, "%s: on: %d\n", __func__, on); |
| 541 | |
| 542 | mutex_lock(&ov965x->lock); |
| 543 | if (ov965x->power == !on) { |
| 544 | __ov965x_set_power(ov965x, on); |
| 545 | if (on) { |
| 546 | ret = ov965x_write_array(client, |
| 547 | ov965x_init_regs); |
| 548 | ov965x->apply_frame_fmt = 1; |
| 549 | ov965x->ctrls.update = 1; |
| 550 | } |
| 551 | } |
| 552 | if (!ret) |
| 553 | ov965x->power += on ? 1 : -1; |
| 554 | |
| 555 | WARN_ON(ov965x->power < 0); |
| 556 | mutex_unlock(&ov965x->lock); |
| 557 | return ret; |
| 558 | } |
| 559 | |
| 560 | /* |
| 561 | * V4L2 controls |
| 562 | */ |
| 563 | |
| 564 | static void ov965x_update_exposure_ctrl(struct ov965x *ov965x) |
| 565 | { |
| 566 | struct v4l2_ctrl *ctrl = ov965x->ctrls.exposure; |
| 567 | unsigned long fint, trow; |
| 568 | int min, max, def; |
| 569 | u8 clkrc; |
| 570 | |
| 571 | mutex_lock(&ov965x->lock); |
| 572 | if (WARN_ON(!ctrl || !ov965x->frame_size)) { |
| 573 | mutex_unlock(&ov965x->lock); |
| 574 | return; |
| 575 | } |
| 576 | clkrc = DEF_CLKRC + ov965x->fiv->clkrc_div; |
| 577 | /* Calculate internal clock frequency */ |
| 578 | fint = ov965x->mclk_frequency * ((clkrc >> 7) + 1) / |
| 579 | ((2 * ((clkrc & 0x3f) + 1))); |
| 580 | /* and the row interval (in us). */ |
| 581 | trow = (2 * 1520 * 1000000UL) / fint; |
| 582 | max = ov965x->frame_size->max_exp_lines * trow; |
| 583 | ov965x->exp_row_interval = trow; |
| 584 | mutex_unlock(&ov965x->lock); |
| 585 | |
| 586 | v4l2_dbg(1, debug, &ov965x->sd, "clkrc: %#x, fi: %lu, tr: %lu, %d\n", |
| 587 | clkrc, fint, trow, max); |
| 588 | |
| 589 | /* Update exposure time range to match current frame format. */ |
| 590 | min = (trow + 100) / 100; |
| 591 | max = (max - 100) / 100; |
| 592 | def = min + (max - min) / 2; |
| 593 | |
| 594 | if (v4l2_ctrl_modify_range(ctrl, min, max, 1, def)) |
| 595 | v4l2_err(&ov965x->sd, "Exposure ctrl range update failed\n"); |
| 596 | } |
| 597 | |
| 598 | static int ov965x_set_banding_filter(struct ov965x *ov965x, int value) |
| 599 | { |
| 600 | unsigned long mbd, light_freq; |
| 601 | int ret; |
| 602 | u8 reg; |
| 603 | |
| 604 | ret = ov965x_read(ov965x->client, REG_COM8, ®); |
| 605 | if (!ret) { |
| 606 | if (value == V4L2_CID_POWER_LINE_FREQUENCY_DISABLED) |
| 607 | reg &= ~COM8_BFILT; |
| 608 | else |
| 609 | reg |= COM8_BFILT; |
| 610 | ret = ov965x_write(ov965x->client, REG_COM8, reg); |
| 611 | } |
| 612 | if (value == V4L2_CID_POWER_LINE_FREQUENCY_DISABLED) |
| 613 | return 0; |
| 614 | if (WARN_ON(ov965x->fiv == NULL)) |
| 615 | return -EINVAL; |
| 616 | /* Set minimal exposure time for 50/60 HZ lighting */ |
| 617 | if (value == V4L2_CID_POWER_LINE_FREQUENCY_50HZ) |
| 618 | light_freq = 50; |
| 619 | else |
| 620 | light_freq = 60; |
| 621 | mbd = (1000UL * ov965x->fiv->interval.denominator * |
| 622 | ov965x->frame_size->max_exp_lines) / |
| 623 | ov965x->fiv->interval.numerator; |
| 624 | mbd = ((mbd / (light_freq * 2)) + 500) / 1000UL; |
| 625 | |
| 626 | return ov965x_write(ov965x->client, REG_MBD, mbd); |
| 627 | } |
| 628 | |
| 629 | static int ov965x_set_white_balance(struct ov965x *ov965x, int awb) |
| 630 | { |
| 631 | int ret; |
| 632 | u8 reg; |
| 633 | |
| 634 | ret = ov965x_read(ov965x->client, REG_COM8, ®); |
| 635 | if (!ret) { |
| 636 | reg = awb ? reg | REG_COM8 : reg & ~REG_COM8; |
| 637 | ret = ov965x_write(ov965x->client, REG_COM8, reg); |
| 638 | } |
| 639 | if (!ret && !awb) { |
| 640 | ret = ov965x_write(ov965x->client, REG_BLUE, |
| 641 | ov965x->ctrls.blue_balance->val); |
| 642 | if (ret < 0) |
| 643 | return ret; |
| 644 | ret = ov965x_write(ov965x->client, REG_RED, |
| 645 | ov965x->ctrls.red_balance->val); |
| 646 | } |
| 647 | return ret; |
| 648 | } |
| 649 | |
| 650 | #define NUM_BR_LEVELS 7 |
| 651 | #define NUM_BR_REGS 3 |
| 652 | |
| 653 | static int ov965x_set_brightness(struct ov965x *ov965x, int val) |
| 654 | { |
| 655 | static const u8 regs[NUM_BR_LEVELS + 1][NUM_BR_REGS] = { |
| 656 | { REG_AEW, REG_AEB, REG_VPT }, |
| 657 | { 0x1c, 0x12, 0x50 }, /* -3 */ |
| 658 | { 0x3d, 0x30, 0x71 }, /* -2 */ |
| 659 | { 0x50, 0x44, 0x92 }, /* -1 */ |
| 660 | { 0x70, 0x64, 0xc3 }, /* 0 */ |
| 661 | { 0x90, 0x84, 0xd4 }, /* +1 */ |
| 662 | { 0xc4, 0xbf, 0xf9 }, /* +2 */ |
| 663 | { 0xd8, 0xd0, 0xfa }, /* +3 */ |
| 664 | }; |
| 665 | int i, ret = 0; |
| 666 | |
| 667 | val += (NUM_BR_LEVELS / 2 + 1); |
| 668 | if (val > NUM_BR_LEVELS) |
| 669 | return -EINVAL; |
| 670 | |
| 671 | for (i = 0; i < NUM_BR_REGS && !ret; i++) |
| 672 | ret = ov965x_write(ov965x->client, regs[0][i], |
| 673 | regs[val][i]); |
| 674 | return ret; |
| 675 | } |
| 676 | |
| 677 | static int ov965x_set_gain(struct ov965x *ov965x, int auto_gain) |
| 678 | { |
| 679 | struct i2c_client *client = ov965x->client; |
| 680 | struct ov965x_ctrls *ctrls = &ov965x->ctrls; |
| 681 | int ret = 0; |
| 682 | u8 reg; |
| 683 | /* |
| 684 | * For manual mode we need to disable AGC first, so |
| 685 | * gain value in REG_VREF, REG_GAIN is not overwritten. |
| 686 | */ |
| 687 | if (ctrls->auto_gain->is_new) { |
| 688 | ret = ov965x_read(client, REG_COM8, ®); |
| 689 | if (ret < 0) |
| 690 | return ret; |
| 691 | if (ctrls->auto_gain->val) |
| 692 | reg |= COM8_AGC; |
| 693 | else |
| 694 | reg &= ~COM8_AGC; |
| 695 | ret = ov965x_write(client, REG_COM8, reg); |
| 696 | if (ret < 0) |
| 697 | return ret; |
| 698 | } |
| 699 | |
| 700 | if (ctrls->gain->is_new && !auto_gain) { |
| 701 | unsigned int gain = ctrls->gain->val; |
| 702 | unsigned int rgain; |
| 703 | int m; |
| 704 | /* |
| 705 | * Convert gain control value to the sensor's gain |
| 706 | * registers (VREF[7:6], GAIN[7:0]) format. |
| 707 | */ |
| 708 | for (m = 6; m >= 0; m--) |
| 709 | if (gain >= (1 << m) * 16) |
| 710 | break; |
| 711 | rgain = (gain - ((1 << m) * 16)) / (1 << m); |
| 712 | rgain |= (((1 << m) - 1) << 4); |
| 713 | |
| 714 | ret = ov965x_write(client, REG_GAIN, rgain & 0xff); |
| 715 | if (ret < 0) |
| 716 | return ret; |
| 717 | ret = ov965x_read(client, REG_VREF, ®); |
| 718 | if (ret < 0) |
| 719 | return ret; |
| 720 | reg &= ~VREF_GAIN_MASK; |
| 721 | reg |= (((rgain >> 8) & 0x3) << 6); |
| 722 | ret = ov965x_write(client, REG_VREF, reg); |
| 723 | if (ret < 0) |
| 724 | return ret; |
| 725 | /* Return updated control's value to userspace */ |
| 726 | ctrls->gain->val = (1 << m) * (16 + (rgain & 0xf)); |
| 727 | } |
| 728 | |
| 729 | return ret; |
| 730 | } |
| 731 | |
| 732 | static int ov965x_set_sharpness(struct ov965x *ov965x, unsigned int value) |
| 733 | { |
| 734 | u8 com14, edge; |
| 735 | int ret; |
| 736 | |
| 737 | ret = ov965x_read(ov965x->client, REG_COM14, &com14); |
| 738 | if (ret < 0) |
| 739 | return ret; |
| 740 | ret = ov965x_read(ov965x->client, REG_EDGE, &edge); |
| 741 | if (ret < 0) |
| 742 | return ret; |
| 743 | com14 = value ? com14 | COM14_EDGE_EN : com14 & ~COM14_EDGE_EN; |
| 744 | value--; |
| 745 | if (value > 0x0f) { |
| 746 | com14 |= COM14_EEF_X2; |
| 747 | value >>= 1; |
| 748 | } else { |
| 749 | com14 &= ~COM14_EEF_X2; |
| 750 | } |
| 751 | ret = ov965x_write(ov965x->client, REG_COM14, com14); |
| 752 | if (ret < 0) |
| 753 | return ret; |
| 754 | |
| 755 | edge &= ~EDGE_FACTOR_MASK; |
| 756 | edge |= ((u8)value & 0x0f); |
| 757 | |
| 758 | return ov965x_write(ov965x->client, REG_EDGE, edge); |
| 759 | } |
| 760 | |
| 761 | static int ov965x_set_exposure(struct ov965x *ov965x, int exp) |
| 762 | { |
| 763 | struct i2c_client *client = ov965x->client; |
| 764 | struct ov965x_ctrls *ctrls = &ov965x->ctrls; |
| 765 | bool auto_exposure = (exp == V4L2_EXPOSURE_AUTO); |
| 766 | int ret; |
| 767 | u8 reg; |
| 768 | |
| 769 | if (ctrls->auto_exp->is_new) { |
| 770 | ret = ov965x_read(client, REG_COM8, ®); |
| 771 | if (ret < 0) |
| 772 | return ret; |
| 773 | if (auto_exposure) |
| 774 | reg |= (COM8_AEC | COM8_AGC); |
| 775 | else |
| 776 | reg &= ~(COM8_AEC | COM8_AGC); |
| 777 | ret = ov965x_write(client, REG_COM8, reg); |
| 778 | if (ret < 0) |
| 779 | return ret; |
| 780 | } |
| 781 | |
| 782 | if (!auto_exposure && ctrls->exposure->is_new) { |
| 783 | unsigned int exposure = (ctrls->exposure->val * 100) |
| 784 | / ov965x->exp_row_interval; |
| 785 | /* |
| 786 | * Manual exposure value |
| 787 | * [b15:b0] - AECHM (b15:b10), AECH (b9:b2), COM1 (b1:b0) |
| 788 | */ |
| 789 | ret = ov965x_write(client, REG_COM1, exposure & 0x3); |
| 790 | if (!ret) |
| 791 | ret = ov965x_write(client, REG_AECH, |
| 792 | (exposure >> 2) & 0xff); |
| 793 | if (!ret) |
| 794 | ret = ov965x_write(client, REG_AECHM, |
| 795 | (exposure >> 10) & 0x3f); |
| 796 | /* Update the value to minimize rounding errors */ |
| 797 | ctrls->exposure->val = ((exposure * ov965x->exp_row_interval) |
| 798 | + 50) / 100; |
| 799 | if (ret < 0) |
| 800 | return ret; |
| 801 | } |
| 802 | |
| 803 | v4l2_ctrl_activate(ov965x->ctrls.brightness, !exp); |
| 804 | return 0; |
| 805 | } |
| 806 | |
| 807 | static int ov965x_set_flip(struct ov965x *ov965x) |
| 808 | { |
| 809 | u8 mvfp = 0; |
| 810 | |
| 811 | if (ov965x->ctrls.hflip->val) |
| 812 | mvfp |= MVFP_MIRROR; |
| 813 | |
| 814 | if (ov965x->ctrls.vflip->val) |
| 815 | mvfp |= MVFP_FLIP; |
| 816 | |
| 817 | return ov965x_write(ov965x->client, REG_MVFP, mvfp); |
| 818 | } |
| 819 | |
| 820 | #define NUM_SAT_LEVELS 5 |
| 821 | #define NUM_SAT_REGS 6 |
| 822 | |
| 823 | static int ov965x_set_saturation(struct ov965x *ov965x, int val) |
| 824 | { |
| 825 | static const u8 regs[NUM_SAT_LEVELS][NUM_SAT_REGS] = { |
| 826 | /* MTX(1)...MTX(6) */ |
| 827 | { 0x1d, 0x1f, 0x02, 0x09, 0x13, 0x1c }, /* -2 */ |
| 828 | { 0x2e, 0x31, 0x02, 0x0e, 0x1e, 0x2d }, /* -1 */ |
| 829 | { 0x3a, 0x3d, 0x03, 0x12, 0x26, 0x38 }, /* 0 */ |
| 830 | { 0x46, 0x49, 0x04, 0x16, 0x2e, 0x43 }, /* +1 */ |
| 831 | { 0x57, 0x5c, 0x05, 0x1b, 0x39, 0x54 }, /* +2 */ |
| 832 | }; |
| 833 | u8 addr = REG_MTX(1); |
| 834 | int i, ret = 0; |
| 835 | |
| 836 | val += (NUM_SAT_LEVELS / 2); |
| 837 | if (val >= NUM_SAT_LEVELS) |
| 838 | return -EINVAL; |
| 839 | |
| 840 | for (i = 0; i < NUM_SAT_REGS && !ret; i++) |
| 841 | ret = ov965x_write(ov965x->client, addr + i, regs[val][i]); |
| 842 | |
| 843 | return ret; |
| 844 | } |
| 845 | |
| 846 | static int ov965x_set_test_pattern(struct ov965x *ov965x, int value) |
| 847 | { |
| 848 | int ret; |
| 849 | u8 reg; |
| 850 | |
| 851 | ret = ov965x_read(ov965x->client, REG_COM23, ®); |
| 852 | if (ret < 0) |
| 853 | return ret; |
| 854 | reg = value ? reg | COM23_TEST_MODE : reg & ~COM23_TEST_MODE; |
| 855 | return ov965x_write(ov965x->client, REG_COM23, reg); |
| 856 | } |
| 857 | |
| 858 | static int __g_volatile_ctrl(struct ov965x *ov965x, struct v4l2_ctrl *ctrl) |
| 859 | { |
| 860 | struct i2c_client *client = ov965x->client; |
| 861 | unsigned int exposure, gain, m; |
| 862 | u8 reg0, reg1, reg2; |
| 863 | int ret; |
| 864 | |
| 865 | if (!ov965x->power) |
| 866 | return 0; |
| 867 | |
| 868 | switch (ctrl->id) { |
| 869 | case V4L2_CID_AUTOGAIN: |
| 870 | if (!ctrl->val) |
| 871 | return 0; |
| 872 | ret = ov965x_read(client, REG_GAIN, ®0); |
| 873 | if (ret < 0) |
| 874 | return ret; |
| 875 | ret = ov965x_read(client, REG_VREF, ®1); |
| 876 | if (ret < 0) |
| 877 | return ret; |
| 878 | gain = ((reg1 >> 6) << 8) | reg0; |
| 879 | m = 0x01 << fls(gain >> 4); |
| 880 | ov965x->ctrls.gain->val = m * (16 + (gain & 0xf)); |
| 881 | break; |
| 882 | |
| 883 | case V4L2_CID_EXPOSURE_AUTO: |
| 884 | if (ctrl->val == V4L2_EXPOSURE_MANUAL) |
| 885 | return 0; |
| 886 | ret = ov965x_read(client, REG_COM1, ®0); |
| 887 | if (!ret) |
| 888 | ret = ov965x_read(client, REG_AECH, ®1); |
| 889 | if (!ret) |
| 890 | ret = ov965x_read(client, REG_AECHM, ®2); |
| 891 | if (ret < 0) |
| 892 | return ret; |
| 893 | exposure = ((reg2 & 0x3f) << 10) | (reg1 << 2) | |
| 894 | (reg0 & 0x3); |
| 895 | ov965x->ctrls.exposure->val = ((exposure * |
| 896 | ov965x->exp_row_interval) + 50) / 100; |
| 897 | break; |
| 898 | } |
| 899 | |
| 900 | return 0; |
| 901 | } |
| 902 | |
| 903 | static int ov965x_g_volatile_ctrl(struct v4l2_ctrl *ctrl) |
| 904 | { |
| 905 | struct v4l2_subdev *sd = ctrl_to_sd(ctrl); |
| 906 | struct ov965x *ov965x = to_ov965x(sd); |
| 907 | int ret; |
| 908 | |
| 909 | v4l2_dbg(1, debug, sd, "g_ctrl: %s\n", ctrl->name); |
| 910 | |
| 911 | mutex_lock(&ov965x->lock); |
| 912 | ret = __g_volatile_ctrl(ov965x, ctrl); |
| 913 | mutex_unlock(&ov965x->lock); |
| 914 | return ret; |
| 915 | } |
| 916 | |
| 917 | static int ov965x_s_ctrl(struct v4l2_ctrl *ctrl) |
| 918 | { |
| 919 | struct v4l2_subdev *sd = ctrl_to_sd(ctrl); |
| 920 | struct ov965x *ov965x = to_ov965x(sd); |
| 921 | int ret = -EINVAL; |
| 922 | |
| 923 | v4l2_dbg(1, debug, sd, "s_ctrl: %s, value: %d. power: %d\n", |
| 924 | ctrl->name, ctrl->val, ov965x->power); |
| 925 | |
| 926 | mutex_lock(&ov965x->lock); |
| 927 | /* |
| 928 | * If the device is not powered up now postpone applying control's |
| 929 | * value to the hardware, until it is ready to accept commands. |
| 930 | */ |
| 931 | if (ov965x->power == 0) { |
| 932 | mutex_unlock(&ov965x->lock); |
| 933 | return 0; |
| 934 | } |
| 935 | |
| 936 | switch (ctrl->id) { |
| 937 | case V4L2_CID_AUTO_WHITE_BALANCE: |
| 938 | ret = ov965x_set_white_balance(ov965x, ctrl->val); |
| 939 | break; |
| 940 | |
| 941 | case V4L2_CID_BRIGHTNESS: |
| 942 | ret = ov965x_set_brightness(ov965x, ctrl->val); |
| 943 | break; |
| 944 | |
| 945 | case V4L2_CID_EXPOSURE_AUTO: |
| 946 | ret = ov965x_set_exposure(ov965x, ctrl->val); |
| 947 | break; |
| 948 | |
| 949 | case V4L2_CID_AUTOGAIN: |
| 950 | ret = ov965x_set_gain(ov965x, ctrl->val); |
| 951 | break; |
| 952 | |
| 953 | case V4L2_CID_HFLIP: |
| 954 | ret = ov965x_set_flip(ov965x); |
| 955 | break; |
| 956 | |
| 957 | case V4L2_CID_POWER_LINE_FREQUENCY: |
| 958 | ret = ov965x_set_banding_filter(ov965x, ctrl->val); |
| 959 | break; |
| 960 | |
| 961 | case V4L2_CID_SATURATION: |
| 962 | ret = ov965x_set_saturation(ov965x, ctrl->val); |
| 963 | break; |
| 964 | |
| 965 | case V4L2_CID_SHARPNESS: |
| 966 | ret = ov965x_set_sharpness(ov965x, ctrl->val); |
| 967 | break; |
| 968 | |
| 969 | case V4L2_CID_TEST_PATTERN: |
| 970 | ret = ov965x_set_test_pattern(ov965x, ctrl->val); |
| 971 | break; |
| 972 | } |
| 973 | |
| 974 | mutex_unlock(&ov965x->lock); |
| 975 | return ret; |
| 976 | } |
| 977 | |
| 978 | static const struct v4l2_ctrl_ops ov965x_ctrl_ops = { |
| 979 | .g_volatile_ctrl = ov965x_g_volatile_ctrl, |
| 980 | .s_ctrl = ov965x_s_ctrl, |
| 981 | }; |
| 982 | |
| 983 | static const char * const test_pattern_menu[] = { |
| 984 | "Disabled", |
| 985 | "Color bars", |
| 986 | NULL |
| 987 | }; |
| 988 | |
| 989 | static int ov965x_initialize_controls(struct ov965x *ov965x) |
| 990 | { |
| 991 | const struct v4l2_ctrl_ops *ops = &ov965x_ctrl_ops; |
| 992 | struct ov965x_ctrls *ctrls = &ov965x->ctrls; |
| 993 | struct v4l2_ctrl_handler *hdl = &ctrls->handler; |
| 994 | int ret; |
| 995 | |
| 996 | ret = v4l2_ctrl_handler_init(hdl, 16); |
| 997 | if (ret < 0) |
| 998 | return ret; |
| 999 | |
| 1000 | /* Auto/manual white balance */ |
| 1001 | ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops, |
| 1002 | V4L2_CID_AUTO_WHITE_BALANCE, |
| 1003 | 0, 1, 1, 1); |
| 1004 | ctrls->blue_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BLUE_BALANCE, |
| 1005 | 0, 0xff, 1, 0x80); |
| 1006 | ctrls->red_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_RED_BALANCE, |
| 1007 | 0, 0xff, 1, 0x80); |
| 1008 | /* Auto/manual exposure */ |
| 1009 | ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops, |
| 1010 | V4L2_CID_EXPOSURE_AUTO, |
| 1011 | V4L2_EXPOSURE_MANUAL, 0, V4L2_EXPOSURE_AUTO); |
| 1012 | /* Exposure time, in 100 us units. min/max is updated dynamically. */ |
| 1013 | ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, |
| 1014 | V4L2_CID_EXPOSURE_ABSOLUTE, |
| 1015 | 2, 1500, 1, 500); |
| 1016 | /* Auto/manual gain */ |
| 1017 | ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTOGAIN, |
| 1018 | 0, 1, 1, 1); |
| 1019 | ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN, |
| 1020 | 16, 64 * (16 + 15), 1, 64 * 16); |
| 1021 | |
| 1022 | ctrls->saturation = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION, |
| 1023 | -2, 2, 1, 0); |
| 1024 | ctrls->brightness = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BRIGHTNESS, |
| 1025 | -3, 3, 1, 0); |
| 1026 | ctrls->sharpness = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SHARPNESS, |
| 1027 | 0, 32, 1, 6); |
| 1028 | |
| 1029 | ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, 0); |
| 1030 | ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, 0); |
| 1031 | |
| 1032 | ctrls->light_freq = v4l2_ctrl_new_std_menu(hdl, ops, |
| 1033 | V4L2_CID_POWER_LINE_FREQUENCY, |
| 1034 | V4L2_CID_POWER_LINE_FREQUENCY_60HZ, ~0x7, |
| 1035 | V4L2_CID_POWER_LINE_FREQUENCY_50HZ); |
| 1036 | |
| 1037 | v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN, |
| 1038 | ARRAY_SIZE(test_pattern_menu) - 1, 0, 0, |
| 1039 | test_pattern_menu); |
| 1040 | if (hdl->error) { |
| 1041 | ret = hdl->error; |
| 1042 | v4l2_ctrl_handler_free(hdl); |
| 1043 | return ret; |
| 1044 | } |
| 1045 | |
| 1046 | ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE; |
| 1047 | ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE; |
| 1048 | |
| 1049 | v4l2_ctrl_auto_cluster(3, &ctrls->auto_wb, 0, false); |
Guennadi Liakhovetski | e295b3d | 2016-01-19 09:12:48 -0200 | [diff] [blame] | 1050 | v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true); |
| 1051 | v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp, 1, true); |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1052 | v4l2_ctrl_cluster(2, &ctrls->hflip); |
| 1053 | |
| 1054 | ov965x->sd.ctrl_handler = hdl; |
| 1055 | return 0; |
| 1056 | } |
| 1057 | |
| 1058 | /* |
| 1059 | * V4L2 subdev video and pad level operations |
| 1060 | */ |
| 1061 | static void ov965x_get_default_format(struct v4l2_mbus_framefmt *mf) |
| 1062 | { |
| 1063 | mf->width = ov965x_framesizes[0].width; |
| 1064 | mf->height = ov965x_framesizes[0].height; |
| 1065 | mf->colorspace = ov965x_formats[0].colorspace; |
| 1066 | mf->code = ov965x_formats[0].code; |
| 1067 | mf->field = V4L2_FIELD_NONE; |
| 1068 | } |
| 1069 | |
| 1070 | static int ov965x_enum_mbus_code(struct v4l2_subdev *sd, |
Hans Verkuil | f723413 | 2015-03-04 01:47:54 -0800 | [diff] [blame] | 1071 | struct v4l2_subdev_pad_config *cfg, |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1072 | struct v4l2_subdev_mbus_code_enum *code) |
| 1073 | { |
| 1074 | if (code->index >= ARRAY_SIZE(ov965x_formats)) |
| 1075 | return -EINVAL; |
| 1076 | |
| 1077 | code->code = ov965x_formats[code->index].code; |
| 1078 | return 0; |
| 1079 | } |
| 1080 | |
| 1081 | static int ov965x_enum_frame_sizes(struct v4l2_subdev *sd, |
Hans Verkuil | f723413 | 2015-03-04 01:47:54 -0800 | [diff] [blame] | 1082 | struct v4l2_subdev_pad_config *cfg, |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1083 | struct v4l2_subdev_frame_size_enum *fse) |
| 1084 | { |
| 1085 | int i = ARRAY_SIZE(ov965x_formats); |
| 1086 | |
Dan Carpenter | 6a4760e | 2013-08-23 05:33:48 -0300 | [diff] [blame] | 1087 | if (fse->index >= ARRAY_SIZE(ov965x_framesizes)) |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1088 | return -EINVAL; |
| 1089 | |
| 1090 | while (--i) |
| 1091 | if (fse->code == ov965x_formats[i].code) |
| 1092 | break; |
| 1093 | |
| 1094 | fse->code = ov965x_formats[i].code; |
| 1095 | |
| 1096 | fse->min_width = ov965x_framesizes[fse->index].width; |
| 1097 | fse->max_width = fse->min_width; |
| 1098 | fse->max_height = ov965x_framesizes[fse->index].height; |
| 1099 | fse->min_height = fse->max_height; |
| 1100 | |
| 1101 | return 0; |
| 1102 | } |
| 1103 | |
| 1104 | static int ov965x_g_frame_interval(struct v4l2_subdev *sd, |
| 1105 | struct v4l2_subdev_frame_interval *fi) |
| 1106 | { |
| 1107 | struct ov965x *ov965x = to_ov965x(sd); |
| 1108 | |
| 1109 | mutex_lock(&ov965x->lock); |
| 1110 | fi->interval = ov965x->fiv->interval; |
| 1111 | mutex_unlock(&ov965x->lock); |
| 1112 | |
| 1113 | return 0; |
| 1114 | } |
| 1115 | |
| 1116 | static int __ov965x_set_frame_interval(struct ov965x *ov965x, |
| 1117 | struct v4l2_subdev_frame_interval *fi) |
| 1118 | { |
| 1119 | struct v4l2_mbus_framefmt *mbus_fmt = &ov965x->format; |
| 1120 | const struct ov965x_interval *fiv = &ov965x_intervals[0]; |
| 1121 | u64 req_int, err, min_err = ~0ULL; |
| 1122 | unsigned int i; |
| 1123 | |
| 1124 | |
| 1125 | if (fi->interval.denominator == 0) |
| 1126 | return -EINVAL; |
| 1127 | |
| 1128 | req_int = (u64)(fi->interval.numerator * 10000) / |
| 1129 | fi->interval.denominator; |
| 1130 | |
| 1131 | for (i = 0; i < ARRAY_SIZE(ov965x_intervals); i++) { |
| 1132 | const struct ov965x_interval *iv = &ov965x_intervals[i]; |
| 1133 | |
| 1134 | if (mbus_fmt->width != iv->size.width || |
| 1135 | mbus_fmt->height != iv->size.height) |
| 1136 | continue; |
Andrew Morton | 79211c8 | 2015-11-09 14:58:13 -0800 | [diff] [blame] | 1137 | err = abs((u64)(iv->interval.numerator * 10000) / |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1138 | iv->interval.denominator - req_int); |
| 1139 | if (err < min_err) { |
| 1140 | fiv = iv; |
| 1141 | min_err = err; |
| 1142 | } |
| 1143 | } |
| 1144 | ov965x->fiv = fiv; |
| 1145 | |
| 1146 | v4l2_dbg(1, debug, &ov965x->sd, "Changed frame interval to %u us\n", |
| 1147 | fiv->interval.numerator * 1000000 / fiv->interval.denominator); |
| 1148 | |
| 1149 | return 0; |
| 1150 | } |
| 1151 | |
| 1152 | static int ov965x_s_frame_interval(struct v4l2_subdev *sd, |
| 1153 | struct v4l2_subdev_frame_interval *fi) |
| 1154 | { |
| 1155 | struct ov965x *ov965x = to_ov965x(sd); |
| 1156 | int ret; |
| 1157 | |
| 1158 | v4l2_dbg(1, debug, sd, "Setting %d/%d frame interval\n", |
| 1159 | fi->interval.numerator, fi->interval.denominator); |
| 1160 | |
| 1161 | mutex_lock(&ov965x->lock); |
| 1162 | ret = __ov965x_set_frame_interval(ov965x, fi); |
| 1163 | ov965x->apply_frame_fmt = 1; |
| 1164 | mutex_unlock(&ov965x->lock); |
| 1165 | return ret; |
| 1166 | } |
| 1167 | |
Hans Verkuil | f723413 | 2015-03-04 01:47:54 -0800 | [diff] [blame] | 1168 | static int ov965x_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1169 | struct v4l2_subdev_format *fmt) |
| 1170 | { |
| 1171 | struct ov965x *ov965x = to_ov965x(sd); |
| 1172 | struct v4l2_mbus_framefmt *mf; |
| 1173 | |
| 1174 | if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { |
Hans Verkuil | f723413 | 2015-03-04 01:47:54 -0800 | [diff] [blame] | 1175 | mf = v4l2_subdev_get_try_format(sd, cfg, 0); |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1176 | fmt->format = *mf; |
| 1177 | return 0; |
| 1178 | } |
| 1179 | |
| 1180 | mutex_lock(&ov965x->lock); |
| 1181 | fmt->format = ov965x->format; |
| 1182 | mutex_unlock(&ov965x->lock); |
| 1183 | |
| 1184 | return 0; |
| 1185 | } |
| 1186 | |
| 1187 | static void __ov965x_try_frame_size(struct v4l2_mbus_framefmt *mf, |
| 1188 | const struct ov965x_framesize **size) |
| 1189 | { |
| 1190 | const struct ov965x_framesize *fsize = &ov965x_framesizes[0], |
| 1191 | *match = NULL; |
| 1192 | int i = ARRAY_SIZE(ov965x_framesizes); |
| 1193 | unsigned int min_err = UINT_MAX; |
| 1194 | |
| 1195 | while (i--) { |
| 1196 | int err = abs(fsize->width - mf->width) |
| 1197 | + abs(fsize->height - mf->height); |
| 1198 | if (err < min_err) { |
| 1199 | min_err = err; |
| 1200 | match = fsize; |
| 1201 | } |
| 1202 | fsize++; |
| 1203 | } |
| 1204 | if (!match) |
| 1205 | match = &ov965x_framesizes[0]; |
| 1206 | mf->width = match->width; |
| 1207 | mf->height = match->height; |
| 1208 | if (size) |
| 1209 | *size = match; |
| 1210 | } |
| 1211 | |
Hans Verkuil | f723413 | 2015-03-04 01:47:54 -0800 | [diff] [blame] | 1212 | static int ov965x_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1213 | struct v4l2_subdev_format *fmt) |
| 1214 | { |
| 1215 | unsigned int index = ARRAY_SIZE(ov965x_formats); |
| 1216 | struct v4l2_mbus_framefmt *mf = &fmt->format; |
| 1217 | struct ov965x *ov965x = to_ov965x(sd); |
| 1218 | const struct ov965x_framesize *size = NULL; |
| 1219 | int ret = 0; |
| 1220 | |
| 1221 | __ov965x_try_frame_size(mf, &size); |
| 1222 | |
| 1223 | while (--index) |
| 1224 | if (ov965x_formats[index].code == mf->code) |
| 1225 | break; |
| 1226 | |
| 1227 | mf->colorspace = V4L2_COLORSPACE_JPEG; |
| 1228 | mf->code = ov965x_formats[index].code; |
| 1229 | mf->field = V4L2_FIELD_NONE; |
| 1230 | |
| 1231 | mutex_lock(&ov965x->lock); |
| 1232 | |
| 1233 | if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { |
Hans Verkuil | f723413 | 2015-03-04 01:47:54 -0800 | [diff] [blame] | 1234 | if (cfg != NULL) { |
| 1235 | mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad); |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1236 | *mf = fmt->format; |
| 1237 | } |
| 1238 | } else { |
| 1239 | if (ov965x->streaming) { |
| 1240 | ret = -EBUSY; |
| 1241 | } else { |
| 1242 | ov965x->frame_size = size; |
| 1243 | ov965x->format = fmt->format; |
| 1244 | ov965x->tslb_reg = ov965x_formats[index].tslb_reg; |
| 1245 | ov965x->apply_frame_fmt = 1; |
| 1246 | } |
| 1247 | } |
| 1248 | |
| 1249 | if (!ret && fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { |
| 1250 | struct v4l2_subdev_frame_interval fiv = { |
| 1251 | .interval = { 0, 1 } |
| 1252 | }; |
| 1253 | /* Reset to minimum possible frame interval */ |
| 1254 | __ov965x_set_frame_interval(ov965x, &fiv); |
| 1255 | } |
| 1256 | mutex_unlock(&ov965x->lock); |
| 1257 | |
| 1258 | if (!ret) |
| 1259 | ov965x_update_exposure_ctrl(ov965x); |
| 1260 | |
| 1261 | return ret; |
| 1262 | } |
| 1263 | |
| 1264 | static int ov965x_set_frame_size(struct ov965x *ov965x) |
| 1265 | { |
| 1266 | int i, ret = 0; |
| 1267 | |
| 1268 | for (i = 0; ret == 0 && i < NUM_FMT_REGS; i++) |
| 1269 | ret = ov965x_write(ov965x->client, frame_size_reg_addr[i], |
| 1270 | ov965x->frame_size->regs[i]); |
| 1271 | return ret; |
| 1272 | } |
| 1273 | |
| 1274 | static int __ov965x_set_params(struct ov965x *ov965x) |
| 1275 | { |
| 1276 | struct i2c_client *client = ov965x->client; |
| 1277 | struct ov965x_ctrls *ctrls = &ov965x->ctrls; |
| 1278 | int ret = 0; |
| 1279 | u8 reg; |
| 1280 | |
| 1281 | if (ov965x->apply_frame_fmt) { |
| 1282 | reg = DEF_CLKRC + ov965x->fiv->clkrc_div; |
| 1283 | ret = ov965x_write(client, REG_CLKRC, reg); |
| 1284 | if (ret < 0) |
| 1285 | return ret; |
| 1286 | ret = ov965x_set_frame_size(ov965x); |
| 1287 | if (ret < 0) |
| 1288 | return ret; |
| 1289 | ret = ov965x_read(client, REG_TSLB, ®); |
| 1290 | if (ret < 0) |
| 1291 | return ret; |
| 1292 | reg &= ~TSLB_YUYV_MASK; |
| 1293 | reg |= ov965x->tslb_reg; |
| 1294 | ret = ov965x_write(client, REG_TSLB, reg); |
| 1295 | if (ret < 0) |
| 1296 | return ret; |
| 1297 | } |
| 1298 | ret = ov965x_set_default_gamma_curve(ov965x); |
| 1299 | if (ret < 0) |
| 1300 | return ret; |
| 1301 | ret = ov965x_set_color_matrix(ov965x); |
| 1302 | if (ret < 0) |
| 1303 | return ret; |
| 1304 | /* |
| 1305 | * Select manual banding filter, the filter will |
| 1306 | * be enabled further if required. |
| 1307 | */ |
| 1308 | ret = ov965x_read(client, REG_COM11, ®); |
| 1309 | if (!ret) |
| 1310 | reg |= COM11_BANDING; |
| 1311 | ret = ov965x_write(client, REG_COM11, reg); |
| 1312 | if (ret < 0) |
| 1313 | return ret; |
| 1314 | /* |
| 1315 | * Banding filter (REG_MBD value) needs to match selected |
| 1316 | * resolution and frame rate, so it's always updated here. |
| 1317 | */ |
| 1318 | return ov965x_set_banding_filter(ov965x, ctrls->light_freq->val); |
| 1319 | } |
| 1320 | |
| 1321 | static int ov965x_s_stream(struct v4l2_subdev *sd, int on) |
| 1322 | { |
| 1323 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 1324 | struct ov965x *ov965x = to_ov965x(sd); |
| 1325 | struct ov965x_ctrls *ctrls = &ov965x->ctrls; |
| 1326 | int ret = 0; |
| 1327 | |
| 1328 | v4l2_dbg(1, debug, client, "%s: on: %d\n", __func__, on); |
| 1329 | |
| 1330 | mutex_lock(&ov965x->lock); |
| 1331 | if (ov965x->streaming == !on) { |
| 1332 | if (on) |
| 1333 | ret = __ov965x_set_params(ov965x); |
| 1334 | |
| 1335 | if (!ret && ctrls->update) { |
| 1336 | /* |
| 1337 | * ov965x_s_ctrl callback takes the mutex |
| 1338 | * so it needs to be released here. |
| 1339 | */ |
| 1340 | mutex_unlock(&ov965x->lock); |
| 1341 | ret = v4l2_ctrl_handler_setup(&ctrls->handler); |
| 1342 | |
| 1343 | mutex_lock(&ov965x->lock); |
| 1344 | if (!ret) |
| 1345 | ctrls->update = 0; |
| 1346 | } |
| 1347 | if (!ret) |
| 1348 | ret = ov965x_write(client, REG_COM2, |
| 1349 | on ? 0x01 : 0x11); |
| 1350 | } |
| 1351 | if (!ret) |
| 1352 | ov965x->streaming += on ? 1 : -1; |
| 1353 | |
| 1354 | WARN_ON(ov965x->streaming < 0); |
| 1355 | mutex_unlock(&ov965x->lock); |
| 1356 | |
| 1357 | return ret; |
| 1358 | } |
| 1359 | |
| 1360 | /* |
| 1361 | * V4L2 subdev internal operations |
| 1362 | */ |
| 1363 | static int ov965x_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) |
| 1364 | { |
Hans Verkuil | f723413 | 2015-03-04 01:47:54 -0800 | [diff] [blame] | 1365 | struct v4l2_mbus_framefmt *mf = v4l2_subdev_get_try_format(sd, fh->pad, 0); |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1366 | |
| 1367 | ov965x_get_default_format(mf); |
| 1368 | return 0; |
| 1369 | } |
| 1370 | |
| 1371 | static const struct v4l2_subdev_pad_ops ov965x_pad_ops = { |
| 1372 | .enum_mbus_code = ov965x_enum_mbus_code, |
| 1373 | .enum_frame_size = ov965x_enum_frame_sizes, |
| 1374 | .get_fmt = ov965x_get_fmt, |
| 1375 | .set_fmt = ov965x_set_fmt, |
| 1376 | }; |
| 1377 | |
| 1378 | static const struct v4l2_subdev_video_ops ov965x_video_ops = { |
| 1379 | .s_stream = ov965x_s_stream, |
| 1380 | .g_frame_interval = ov965x_g_frame_interval, |
| 1381 | .s_frame_interval = ov965x_s_frame_interval, |
| 1382 | |
| 1383 | }; |
| 1384 | |
| 1385 | static const struct v4l2_subdev_internal_ops ov965x_sd_internal_ops = { |
| 1386 | .open = ov965x_open, |
| 1387 | }; |
| 1388 | |
| 1389 | static const struct v4l2_subdev_core_ops ov965x_core_ops = { |
| 1390 | .s_power = ov965x_s_power, |
| 1391 | .log_status = v4l2_ctrl_subdev_log_status, |
| 1392 | .subscribe_event = v4l2_ctrl_subdev_subscribe_event, |
| 1393 | .unsubscribe_event = v4l2_event_subdev_unsubscribe, |
| 1394 | }; |
| 1395 | |
| 1396 | static const struct v4l2_subdev_ops ov965x_subdev_ops = { |
| 1397 | .core = &ov965x_core_ops, |
| 1398 | .pad = &ov965x_pad_ops, |
| 1399 | .video = &ov965x_video_ops, |
| 1400 | }; |
| 1401 | |
| 1402 | /* |
| 1403 | * Reset and power down GPIOs configuration |
| 1404 | */ |
| 1405 | static int ov965x_configure_gpios(struct ov965x *ov965x, |
| 1406 | const struct ov9650_platform_data *pdata) |
| 1407 | { |
| 1408 | int ret, i; |
| 1409 | |
| 1410 | ov965x->gpios[GPIO_PWDN] = pdata->gpio_pwdn; |
| 1411 | ov965x->gpios[GPIO_RST] = pdata->gpio_reset; |
| 1412 | |
| 1413 | for (i = 0; i < ARRAY_SIZE(ov965x->gpios); i++) { |
| 1414 | int gpio = ov965x->gpios[i]; |
| 1415 | |
| 1416 | if (!gpio_is_valid(gpio)) |
| 1417 | continue; |
| 1418 | ret = devm_gpio_request_one(&ov965x->client->dev, gpio, |
| 1419 | GPIOF_OUT_INIT_HIGH, "OV965X"); |
| 1420 | if (ret < 0) |
| 1421 | return ret; |
| 1422 | v4l2_dbg(1, debug, &ov965x->sd, "set gpio %d to 1\n", gpio); |
| 1423 | |
| 1424 | gpio_set_value(gpio, 1); |
| 1425 | gpio_export(gpio, 0); |
| 1426 | ov965x->gpios[i] = gpio; |
| 1427 | } |
| 1428 | |
| 1429 | return 0; |
| 1430 | } |
| 1431 | |
| 1432 | static int ov965x_detect_sensor(struct v4l2_subdev *sd) |
| 1433 | { |
| 1434 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 1435 | struct ov965x *ov965x = to_ov965x(sd); |
| 1436 | u8 pid, ver; |
| 1437 | int ret; |
| 1438 | |
| 1439 | mutex_lock(&ov965x->lock); |
Mauro Carvalho Chehab | 1297651 | 2015-08-11 12:18:31 -0300 | [diff] [blame] | 1440 | __ov965x_set_power(ov965x, 1); |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1441 | usleep_range(25000, 26000); |
| 1442 | |
| 1443 | /* Check sensor revision */ |
| 1444 | ret = ov965x_read(client, REG_PID, &pid); |
| 1445 | if (!ret) |
| 1446 | ret = ov965x_read(client, REG_VER, &ver); |
| 1447 | |
| 1448 | __ov965x_set_power(ov965x, 0); |
| 1449 | |
| 1450 | if (!ret) { |
| 1451 | ov965x->id = OV965X_ID(pid, ver); |
| 1452 | if (ov965x->id == OV9650_ID || ov965x->id == OV9652_ID) { |
| 1453 | v4l2_info(sd, "Found OV%04X sensor\n", ov965x->id); |
| 1454 | } else { |
| 1455 | v4l2_err(sd, "Sensor detection failed (%04X, %d)\n", |
| 1456 | ov965x->id, ret); |
| 1457 | ret = -ENODEV; |
| 1458 | } |
| 1459 | } |
| 1460 | mutex_unlock(&ov965x->lock); |
| 1461 | |
| 1462 | return ret; |
| 1463 | } |
| 1464 | |
| 1465 | static int ov965x_probe(struct i2c_client *client, |
| 1466 | const struct i2c_device_id *id) |
| 1467 | { |
| 1468 | const struct ov9650_platform_data *pdata = client->dev.platform_data; |
| 1469 | struct v4l2_subdev *sd; |
| 1470 | struct ov965x *ov965x; |
| 1471 | int ret; |
| 1472 | |
| 1473 | if (pdata == NULL) { |
| 1474 | dev_err(&client->dev, "platform data not specified\n"); |
| 1475 | return -EINVAL; |
| 1476 | } |
| 1477 | |
| 1478 | if (pdata->mclk_frequency == 0) { |
| 1479 | dev_err(&client->dev, "MCLK frequency not specified\n"); |
| 1480 | return -EINVAL; |
| 1481 | } |
| 1482 | |
| 1483 | ov965x = devm_kzalloc(&client->dev, sizeof(*ov965x), GFP_KERNEL); |
| 1484 | if (!ov965x) |
| 1485 | return -ENOMEM; |
| 1486 | |
| 1487 | mutex_init(&ov965x->lock); |
| 1488 | ov965x->client = client; |
| 1489 | ov965x->mclk_frequency = pdata->mclk_frequency; |
| 1490 | |
| 1491 | sd = &ov965x->sd; |
| 1492 | v4l2_i2c_subdev_init(sd, client, &ov965x_subdev_ops); |
| 1493 | strlcpy(sd->name, DRIVER_NAME, sizeof(sd->name)); |
| 1494 | |
| 1495 | sd->internal_ops = &ov965x_sd_internal_ops; |
| 1496 | sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | |
| 1497 | V4L2_SUBDEV_FL_HAS_EVENTS; |
| 1498 | |
| 1499 | ret = ov965x_configure_gpios(ov965x, pdata); |
| 1500 | if (ret < 0) |
| 1501 | return ret; |
| 1502 | |
| 1503 | ov965x->pad.flags = MEDIA_PAD_FL_SOURCE; |
Mauro Carvalho Chehab | 4ca72ef | 2015-12-10 17:25:41 -0200 | [diff] [blame] | 1504 | sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; |
Mauro Carvalho Chehab | ab22e77 | 2015-12-11 07:44:40 -0200 | [diff] [blame] | 1505 | ret = media_entity_pads_init(&sd->entity, 1, &ov965x->pad); |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1506 | if (ret < 0) |
| 1507 | return ret; |
| 1508 | |
| 1509 | ret = ov965x_initialize_controls(ov965x); |
| 1510 | if (ret < 0) |
| 1511 | goto err_me; |
| 1512 | |
| 1513 | ov965x_get_default_format(&ov965x->format); |
| 1514 | ov965x->frame_size = &ov965x_framesizes[0]; |
| 1515 | ov965x->fiv = &ov965x_intervals[0]; |
| 1516 | |
| 1517 | ret = ov965x_detect_sensor(sd); |
| 1518 | if (ret < 0) |
| 1519 | goto err_ctrls; |
| 1520 | |
| 1521 | /* Update exposure time min/max to match frame format */ |
| 1522 | ov965x_update_exposure_ctrl(ov965x); |
| 1523 | |
Javier Martinez Canillas | 6dca6cf | 2016-09-08 10:05:40 -0300 | [diff] [blame] | 1524 | ret = v4l2_async_register_subdev(sd); |
| 1525 | if (ret < 0) |
| 1526 | goto err_ctrls; |
| 1527 | |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1528 | return 0; |
| 1529 | err_ctrls: |
| 1530 | v4l2_ctrl_handler_free(sd->ctrl_handler); |
| 1531 | err_me: |
| 1532 | media_entity_cleanup(&sd->entity); |
| 1533 | return ret; |
| 1534 | } |
| 1535 | |
| 1536 | static int ov965x_remove(struct i2c_client *client) |
| 1537 | { |
| 1538 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| 1539 | |
Javier Martinez Canillas | 6dca6cf | 2016-09-08 10:05:40 -0300 | [diff] [blame] | 1540 | v4l2_async_unregister_subdev(sd); |
Sylwester Nawrocki | 84a15de | 2012-12-26 15:50:03 -0300 | [diff] [blame] | 1541 | v4l2_ctrl_handler_free(sd->ctrl_handler); |
| 1542 | media_entity_cleanup(&sd->entity); |
| 1543 | |
| 1544 | return 0; |
| 1545 | } |
| 1546 | |
| 1547 | static const struct i2c_device_id ov965x_id[] = { |
| 1548 | { "OV9650", 0 }, |
| 1549 | { "OV9652", 0 }, |
| 1550 | { /* sentinel */ } |
| 1551 | }; |
| 1552 | MODULE_DEVICE_TABLE(i2c, ov965x_id); |
| 1553 | |
| 1554 | static struct i2c_driver ov965x_i2c_driver = { |
| 1555 | .driver = { |
| 1556 | .name = DRIVER_NAME, |
| 1557 | }, |
| 1558 | .probe = ov965x_probe, |
| 1559 | .remove = ov965x_remove, |
| 1560 | .id_table = ov965x_id, |
| 1561 | }; |
| 1562 | |
| 1563 | module_i2c_driver(ov965x_i2c_driver); |
| 1564 | |
| 1565 | MODULE_AUTHOR("Sylwester Nawrocki <sylvester.nawrocki@gmail.com>"); |
| 1566 | MODULE_DESCRIPTION("OV9650/OV9652 CMOS Image Sensor driver"); |
| 1567 | MODULE_LICENSE("GPL"); |