1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Driver for the Sony IMX415 CMOS Image Sensor. 4 * 5 * Copyright (C) 2023 WolfVision GmbH. 6 */ 7 8#include <linux/clk.h> 9#include <linux/gpio/consumer.h> 10#include <linux/i2c.h> 11#include <linux/module.h> 12#include <linux/of.h> 13#include <linux/pm_runtime.h> 14#include <linux/regmap.h> 15#include <linux/regulator/consumer.h> 16#include <linux/slab.h> 17#include <linux/videodev2.h> 18 19#include <media/v4l2-ctrls.h> 20#include <media/v4l2-fwnode.h> 21#include <media/v4l2-subdev.h> 22 23#define IMX415_PIXEL_ARRAY_TOP 0 24#define IMX415_PIXEL_ARRAY_LEFT 0 25#define IMX415_PIXEL_ARRAY_WIDTH 3864 26#define IMX415_PIXEL_ARRAY_HEIGHT 2192 27#define IMX415_PIXEL_ARRAY_VBLANK 58 28 29#define IMX415_NUM_CLK_PARAM_REGS 11 30 31#define IMX415_REG_8BIT(n) ((1 << 16) | (n)) 32#define IMX415_REG_16BIT(n) ((2 << 16) | (n)) 33#define IMX415_REG_24BIT(n) ((3 << 16) | (n)) 34#define IMX415_REG_SIZE_SHIFT 16 35#define IMX415_REG_ADDR_MASK 0xffff 36 37#define IMX415_MODE IMX415_REG_8BIT(0x3000) 38#define IMX415_MODE_OPERATING (0) 39#define IMX415_MODE_STANDBY BIT(0) 40#define IMX415_REGHOLD IMX415_REG_8BIT(0x3001) 41#define IMX415_REGHOLD_INVALID (0) 42#define IMX415_REGHOLD_VALID BIT(0) 43#define IMX415_XMSTA IMX415_REG_8BIT(0x3002) 44#define IMX415_XMSTA_START (0) 45#define IMX415_XMSTA_STOP BIT(0) 46#define IMX415_BCWAIT_TIME IMX415_REG_16BIT(0x3008) 47#define IMX415_CPWAIT_TIME IMX415_REG_16BIT(0x300A) 48#define IMX415_WINMODE IMX415_REG_8BIT(0x301C) 49#define IMX415_ADDMODE IMX415_REG_8BIT(0x3022) 50#define IMX415_REVERSE IMX415_REG_8BIT(0x3030) 51#define IMX415_HREVERSE_SHIFT (0) 52#define IMX415_VREVERSE_SHIFT BIT(0) 53#define IMX415_ADBIT IMX415_REG_8BIT(0x3031) 54#define IMX415_MDBIT IMX415_REG_8BIT(0x3032) 55#define IMX415_SYS_MODE IMX415_REG_8BIT(0x3033) 56#define IMX415_OUTSEL IMX415_REG_8BIT(0x30C0) 57#define IMX415_DRV IMX415_REG_8BIT(0x30C1) 58#define IMX415_VMAX IMX415_REG_24BIT(0x3024) 59#define IMX415_HMAX IMX415_REG_16BIT(0x3028) 60#define IMX415_SHR0 IMX415_REG_24BIT(0x3050) 61#define IMX415_GAIN_PCG_0 IMX415_REG_16BIT(0x3090) 62#define IMX415_AGAIN_MIN 0 63#define IMX415_AGAIN_MAX 100 64#define IMX415_AGAIN_STEP 1 65#define IMX415_BLKLEVEL IMX415_REG_16BIT(0x30E2) 66#define IMX415_BLKLEVEL_DEFAULT 50 67#define IMX415_TPG_EN_DUOUT IMX415_REG_8BIT(0x30E4) 68#define IMX415_TPG_PATSEL_DUOUT IMX415_REG_8BIT(0x30E6) 69#define IMX415_TPG_COLORWIDTH IMX415_REG_8BIT(0x30E8) 70#define IMX415_TESTCLKEN_MIPI IMX415_REG_8BIT(0x3110) 71#define IMX415_INCKSEL1 IMX415_REG_8BIT(0x3115) 72#define IMX415_INCKSEL2 IMX415_REG_8BIT(0x3116) 73#define IMX415_INCKSEL3 IMX415_REG_16BIT(0x3118) 74#define IMX415_INCKSEL4 IMX415_REG_16BIT(0x311A) 75#define IMX415_INCKSEL5 IMX415_REG_8BIT(0x311E) 76#define IMX415_DIG_CLP_MODE IMX415_REG_8BIT(0x32C8) 77#define IMX415_WRJ_OPEN IMX415_REG_8BIT(0x3390) 78#define IMX415_SENSOR_INFO IMX415_REG_16BIT(0x3F12) 79#define IMX415_SENSOR_INFO_MASK 0xFFF 80#define IMX415_CHIP_ID 0x514 81#define IMX415_LANEMODE IMX415_REG_16BIT(0x4001) 82#define IMX415_LANEMODE_2 1 83#define IMX415_LANEMODE_4 3 84#define IMX415_TXCLKESC_FREQ IMX415_REG_16BIT(0x4004) 85#define IMX415_INCKSEL6 IMX415_REG_8BIT(0x400C) 86#define IMX415_TCLKPOST IMX415_REG_16BIT(0x4018) 87#define IMX415_TCLKPREPARE IMX415_REG_16BIT(0x401A) 88#define IMX415_TCLKTRAIL IMX415_REG_16BIT(0x401C) 89#define IMX415_TCLKZERO IMX415_REG_16BIT(0x401E) 90#define IMX415_THSPREPARE IMX415_REG_16BIT(0x4020) 91#define IMX415_THSZERO IMX415_REG_16BIT(0x4022) 92#define IMX415_THSTRAIL IMX415_REG_16BIT(0x4024) 93#define IMX415_THSEXIT IMX415_REG_16BIT(0x4026) 94#define IMX415_TLPX IMX415_REG_16BIT(0x4028) 95#define IMX415_INCKSEL7 IMX415_REG_8BIT(0x4074) 96 97struct imx415_reg { 98 u32 address; 99 u32 val; 100}; 101 102static const char *const imx415_supply_names[] = { 103 "dvdd", 104 "ovdd", 105 "avdd", 106}; 107 108/* 109 * The IMX415 data sheet uses lane rates but v4l2 uses link frequency to 110 * describe MIPI CSI-2 speed. This driver uses lane rates wherever possible 111 * and converts them to link frequencies by a factor of two when needed. 112 */ 113static const s64 link_freq_menu_items[] = { 114 594000000 / 2, 720000000 / 2, 891000000 / 2, 115 1440000000 / 2, 1485000000 / 2, 116}; 117 118struct imx415_clk_params { 119 u64 lane_rate; 120 u64 inck; 121 struct imx415_reg regs[IMX415_NUM_CLK_PARAM_REGS]; 122}; 123 124/* INCK Settings - includes all lane rate and INCK dependent registers */ 125static const struct imx415_clk_params imx415_clk_params[] = { 126 { 127 .lane_rate = 594000000, 128 .inck = 27000000, 129 .regs[0] = { IMX415_BCWAIT_TIME, 0x05D }, 130 .regs[1] = { IMX415_CPWAIT_TIME, 0x042 }, 131 .regs[2] = { IMX415_SYS_MODE, 0x7 }, 132 .regs[3] = { IMX415_INCKSEL1, 0x00 }, 133 .regs[4] = { IMX415_INCKSEL2, 0x23 }, 134 .regs[5] = { IMX415_INCKSEL3, 0x084 }, 135 .regs[6] = { IMX415_INCKSEL4, 0x0E7 }, 136 .regs[7] = { IMX415_INCKSEL5, 0x23 }, 137 .regs[8] = { IMX415_INCKSEL6, 0x0 }, 138 .regs[9] = { IMX415_INCKSEL7, 0x1 }, 139 .regs[10] = { IMX415_TXCLKESC_FREQ, 0x06C0 }, 140 }, 141 { 142 .lane_rate = 720000000, 143 .inck = 24000000, 144 .regs[0] = { IMX415_BCWAIT_TIME, 0x054 }, 145 .regs[1] = { IMX415_CPWAIT_TIME, 0x03B }, 146 .regs[2] = { IMX415_SYS_MODE, 0x9 }, 147 .regs[3] = { IMX415_INCKSEL1, 0x00 }, 148 .regs[4] = { IMX415_INCKSEL2, 0x23 }, 149 .regs[5] = { IMX415_INCKSEL3, 0x0B4 }, 150 .regs[6] = { IMX415_INCKSEL4, 0x0FC }, 151 .regs[7] = { IMX415_INCKSEL5, 0x23 }, 152 .regs[8] = { IMX415_INCKSEL6, 0x0 }, 153 .regs[9] = { IMX415_INCKSEL7, 0x1 }, 154 .regs[10] = { IMX415_TXCLKESC_FREQ, 0x0600 }, 155 }, 156 { 157 .lane_rate = 891000000, 158 .inck = 27000000, 159 .regs[0] = { IMX415_BCWAIT_TIME, 0x05D }, 160 .regs[1] = { IMX415_CPWAIT_TIME, 0x042 }, 161 .regs[2] = { IMX415_SYS_MODE, 0x5 }, 162 .regs[3] = { IMX415_INCKSEL1, 0x00 }, 163 .regs[4] = { IMX415_INCKSEL2, 0x23 }, 164 .regs[5] = { IMX415_INCKSEL3, 0x0C6 }, 165 .regs[6] = { IMX415_INCKSEL4, 0x0E7 }, 166 .regs[7] = { IMX415_INCKSEL5, 0x23 }, 167 .regs[8] = { IMX415_INCKSEL6, 0x0 }, 168 .regs[9] = { IMX415_INCKSEL7, 0x1 }, 169 .regs[10] = { IMX415_TXCLKESC_FREQ, 0x06C0 }, 170 }, 171 { 172 .lane_rate = 1440000000, 173 .inck = 24000000, 174 .regs[0] = { IMX415_BCWAIT_TIME, 0x054 }, 175 .regs[1] = { IMX415_CPWAIT_TIME, 0x03B }, 176 .regs[2] = { IMX415_SYS_MODE, 0x8 }, 177 .regs[3] = { IMX415_INCKSEL1, 0x00 }, 178 .regs[4] = { IMX415_INCKSEL2, 0x23 }, 179 .regs[5] = { IMX415_INCKSEL3, 0x0B4 }, 180 .regs[6] = { IMX415_INCKSEL4, 0x0FC }, 181 .regs[7] = { IMX415_INCKSEL5, 0x23 }, 182 .regs[8] = { IMX415_INCKSEL6, 0x1 }, 183 .regs[9] = { IMX415_INCKSEL7, 0x0 }, 184 .regs[10] = { IMX415_TXCLKESC_FREQ, 0x0600 }, 185 }, 186 { 187 .lane_rate = 1485000000, 188 .inck = 27000000, 189 .regs[0] = { IMX415_BCWAIT_TIME, 0x05D }, 190 .regs[1] = { IMX415_CPWAIT_TIME, 0x042 }, 191 .regs[2] = { IMX415_SYS_MODE, 0x8 }, 192 .regs[3] = { IMX415_INCKSEL1, 0x00 }, 193 .regs[4] = { IMX415_INCKSEL2, 0x23 }, 194 .regs[5] = { IMX415_INCKSEL3, 0x0A5 }, 195 .regs[6] = { IMX415_INCKSEL4, 0x0E7 }, 196 .regs[7] = { IMX415_INCKSEL5, 0x23 }, 197 .regs[8] = { IMX415_INCKSEL6, 0x1 }, 198 .regs[9] = { IMX415_INCKSEL7, 0x0 }, 199 .regs[10] = { IMX415_TXCLKESC_FREQ, 0x06C0 }, 200 }, 201}; 202 203/* all-pixel 2-lane 720 Mbps 15.74 Hz mode */ 204static const struct imx415_reg imx415_mode_2_720[] = { 205 { IMX415_VMAX, 0x08CA }, 206 { IMX415_HMAX, 0x07F0 }, 207 { IMX415_LANEMODE, IMX415_LANEMODE_2 }, 208 { IMX415_TCLKPOST, 0x006F }, 209 { IMX415_TCLKPREPARE, 0x002F }, 210 { IMX415_TCLKTRAIL, 0x002F }, 211 { IMX415_TCLKZERO, 0x00BF }, 212 { IMX415_THSPREPARE, 0x002F }, 213 { IMX415_THSZERO, 0x0057 }, 214 { IMX415_THSTRAIL, 0x002F }, 215 { IMX415_THSEXIT, 0x004F }, 216 { IMX415_TLPX, 0x0027 }, 217}; 218 219/* all-pixel 2-lane 1440 Mbps 30.01 Hz mode */ 220static const struct imx415_reg imx415_mode_2_1440[] = { 221 { IMX415_VMAX, 0x08CA }, 222 { IMX415_HMAX, 0x042A }, 223 { IMX415_LANEMODE, IMX415_LANEMODE_2 }, 224 { IMX415_TCLKPOST, 0x009F }, 225 { IMX415_TCLKPREPARE, 0x0057 }, 226 { IMX415_TCLKTRAIL, 0x0057 }, 227 { IMX415_TCLKZERO, 0x0187 }, 228 { IMX415_THSPREPARE, 0x005F }, 229 { IMX415_THSZERO, 0x00A7 }, 230 { IMX415_THSTRAIL, 0x005F }, 231 { IMX415_THSEXIT, 0x0097 }, 232 { IMX415_TLPX, 0x004F }, 233}; 234 235/* all-pixel 4-lane 891 Mbps 30 Hz mode */ 236static const struct imx415_reg imx415_mode_4_891[] = { 237 { IMX415_VMAX, 0x08CA }, 238 { IMX415_HMAX, 0x044C }, 239 { IMX415_LANEMODE, IMX415_LANEMODE_4 }, 240 { IMX415_TCLKPOST, 0x007F }, 241 { IMX415_TCLKPREPARE, 0x0037 }, 242 { IMX415_TCLKTRAIL, 0x0037 }, 243 { IMX415_TCLKZERO, 0x00F7 }, 244 { IMX415_THSPREPARE, 0x003F }, 245 { IMX415_THSZERO, 0x006F }, 246 { IMX415_THSTRAIL, 0x003F }, 247 { IMX415_THSEXIT, 0x005F }, 248 { IMX415_TLPX, 0x002F }, 249}; 250 251struct imx415_mode_reg_list { 252 u32 num_of_regs; 253 const struct imx415_reg *regs; 254}; 255 256/* 257 * Mode : number of lanes, lane rate and frame rate dependent settings 258 * 259 * pixel_rate and hmax_pix are needed to calculate hblank for the v4l2 ctrl 260 * interface. These values can not be found in the data sheet and should be 261 * treated as virtual values. Use following table when adding new modes. 262 * 263 * lane_rate lanes fps hmax_pix pixel_rate 264 * 265 * 594 2 10.000 4400 99000000 266 * 891 2 15.000 4400 148500000 267 * 720 2 15.748 4064 144000000 268 * 1782 2 30.000 4400 297000000 269 * 2079 2 30.000 4400 297000000 270 * 1440 2 30.019 4510 304615385 271 * 272 * 594 4 20.000 5500 247500000 273 * 594 4 25.000 4400 247500000 274 * 720 4 25.000 4400 247500000 275 * 720 4 30.019 4510 304615385 276 * 891 4 30.000 4400 297000000 277 * 1440 4 30.019 4510 304615385 278 * 1440 4 60.038 4510 609230769 279 * 1485 4 60.000 4400 594000000 280 * 1782 4 60.000 4400 594000000 281 * 2079 4 60.000 4400 594000000 282 * 2376 4 90.164 4392 891000000 283 */ 284struct imx415_mode { 285 u64 lane_rate; 286 u32 lanes; 287 u32 hmax_pix; 288 u64 pixel_rate; 289 struct imx415_mode_reg_list reg_list; 290}; 291 292/* mode configs */ 293static const struct imx415_mode supported_modes[] = { 294 { 295 .lane_rate = 720000000, 296 .lanes = 2, 297 .hmax_pix = 4064, 298 .pixel_rate = 144000000, 299 .reg_list = { 300 .num_of_regs = ARRAY_SIZE(imx415_mode_2_720), 301 .regs = imx415_mode_2_720, 302 }, 303 }, 304 { 305 .lane_rate = 1440000000, 306 .lanes = 2, 307 .hmax_pix = 4510, 308 .pixel_rate = 304615385, 309 .reg_list = { 310 .num_of_regs = ARRAY_SIZE(imx415_mode_2_1440), 311 .regs = imx415_mode_2_1440, 312 }, 313 }, 314 { 315 .lane_rate = 891000000, 316 .lanes = 4, 317 .hmax_pix = 4400, 318 .pixel_rate = 297000000, 319 .reg_list = { 320 .num_of_regs = ARRAY_SIZE(imx415_mode_4_891), 321 .regs = imx415_mode_4_891, 322 }, 323 }, 324}; 325 326static const struct regmap_config imx415_regmap_config = { 327 .reg_bits = 16, 328 .val_bits = 8, 329}; 330 331static const char *const imx415_test_pattern_menu[] = { 332 "disabled", 333 "solid black", 334 "solid white", 335 "solid dark gray", 336 "solid light gray", 337 "stripes light/dark grey", 338 "stripes dark/light grey", 339 "stripes black/dark grey", 340 "stripes dark grey/black", 341 "stripes black/white", 342 "stripes white/black", 343 "horizontal color bar", 344 "vertical color bar", 345}; 346 347struct imx415 { 348 struct device *dev; 349 struct clk *clk; 350 struct regulator_bulk_data supplies[ARRAY_SIZE(imx415_supply_names)]; 351 struct gpio_desc *reset; 352 struct regmap *regmap; 353 354 const struct imx415_clk_params *clk_params; 355 356 bool streaming; 357 358 struct v4l2_subdev subdev; 359 struct media_pad pad; 360 361 struct v4l2_ctrl_handler ctrls; 362 struct v4l2_ctrl *vblank; 363 struct v4l2_ctrl *hflip; 364 struct v4l2_ctrl *vflip; 365 366 unsigned int cur_mode; 367 unsigned int num_data_lanes; 368}; 369 370/* 371 * This table includes fixed register settings and a bunch of undocumented 372 * registers that have to be set to another value than default. 373 */ 374static const struct imx415_reg imx415_init_table[] = { 375 /* use all-pixel readout mode, no flip */ 376 { IMX415_WINMODE, 0x00 }, 377 { IMX415_ADDMODE, 0x00 }, 378 { IMX415_REVERSE, 0x00 }, 379 /* use RAW 10-bit mode */ 380 { IMX415_ADBIT, 0x00 }, 381 { IMX415_MDBIT, 0x00 }, 382 /* output VSYNC on XVS and low on XHS */ 383 { IMX415_OUTSEL, 0x22 }, 384 { IMX415_DRV, 0x00 }, 385 386 /* SONY magic registers */ 387 { IMX415_REG_8BIT(0x32D4), 0x21 }, 388 { IMX415_REG_8BIT(0x32EC), 0xA1 }, 389 { IMX415_REG_8BIT(0x3452), 0x7F }, 390 { IMX415_REG_8BIT(0x3453), 0x03 }, 391 { IMX415_REG_8BIT(0x358A), 0x04 }, 392 { IMX415_REG_8BIT(0x35A1), 0x02 }, 393 { IMX415_REG_8BIT(0x36BC), 0x0C }, 394 { IMX415_REG_8BIT(0x36CC), 0x53 }, 395 { IMX415_REG_8BIT(0x36CD), 0x00 }, 396 { IMX415_REG_8BIT(0x36CE), 0x3C }, 397 { IMX415_REG_8BIT(0x36D0), 0x8C }, 398 { IMX415_REG_8BIT(0x36D1), 0x00 }, 399 { IMX415_REG_8BIT(0x36D2), 0x71 }, 400 { IMX415_REG_8BIT(0x36D4), 0x3C }, 401 { IMX415_REG_8BIT(0x36D6), 0x53 }, 402 { IMX415_REG_8BIT(0x36D7), 0x00 }, 403 { IMX415_REG_8BIT(0x36D8), 0x71 }, 404 { IMX415_REG_8BIT(0x36DA), 0x8C }, 405 { IMX415_REG_8BIT(0x36DB), 0x00 }, 406 { IMX415_REG_8BIT(0x3724), 0x02 }, 407 { IMX415_REG_8BIT(0x3726), 0x02 }, 408 { IMX415_REG_8BIT(0x3732), 0x02 }, 409 { IMX415_REG_8BIT(0x3734), 0x03 }, 410 { IMX415_REG_8BIT(0x3736), 0x03 }, 411 { IMX415_REG_8BIT(0x3742), 0x03 }, 412 { IMX415_REG_8BIT(0x3862), 0xE0 }, 413 { IMX415_REG_8BIT(0x38CC), 0x30 }, 414 { IMX415_REG_8BIT(0x38CD), 0x2F }, 415 { IMX415_REG_8BIT(0x395C), 0x0C }, 416 { IMX415_REG_8BIT(0x3A42), 0xD1 }, 417 { IMX415_REG_8BIT(0x3A4C), 0x77 }, 418 { IMX415_REG_8BIT(0x3AE0), 0x02 }, 419 { IMX415_REG_8BIT(0x3AEC), 0x0C }, 420 { IMX415_REG_8BIT(0x3B00), 0x2E }, 421 { IMX415_REG_8BIT(0x3B06), 0x29 }, 422 { IMX415_REG_8BIT(0x3B98), 0x25 }, 423 { IMX415_REG_8BIT(0x3B99), 0x21 }, 424 { IMX415_REG_8BIT(0x3B9B), 0x13 }, 425 { IMX415_REG_8BIT(0x3B9C), 0x13 }, 426 { IMX415_REG_8BIT(0x3B9D), 0x13 }, 427 { IMX415_REG_8BIT(0x3B9E), 0x13 }, 428 { IMX415_REG_8BIT(0x3BA1), 0x00 }, 429 { IMX415_REG_8BIT(0x3BA2), 0x06 }, 430 { IMX415_REG_8BIT(0x3BA3), 0x0B }, 431 { IMX415_REG_8BIT(0x3BA4), 0x10 }, 432 { IMX415_REG_8BIT(0x3BA5), 0x14 }, 433 { IMX415_REG_8BIT(0x3BA6), 0x18 }, 434 { IMX415_REG_8BIT(0x3BA7), 0x1A }, 435 { IMX415_REG_8BIT(0x3BA8), 0x1A }, 436 { IMX415_REG_8BIT(0x3BA9), 0x1A }, 437 { IMX415_REG_8BIT(0x3BAC), 0xED }, 438 { IMX415_REG_8BIT(0x3BAD), 0x01 }, 439 { IMX415_REG_8BIT(0x3BAE), 0xF6 }, 440 { IMX415_REG_8BIT(0x3BAF), 0x02 }, 441 { IMX415_REG_8BIT(0x3BB0), 0xA2 }, 442 { IMX415_REG_8BIT(0x3BB1), 0x03 }, 443 { IMX415_REG_8BIT(0x3BB2), 0xE0 }, 444 { IMX415_REG_8BIT(0x3BB3), 0x03 }, 445 { IMX415_REG_8BIT(0x3BB4), 0xE0 }, 446 { IMX415_REG_8BIT(0x3BB5), 0x03 }, 447 { IMX415_REG_8BIT(0x3BB6), 0xE0 }, 448 { IMX415_REG_8BIT(0x3BB7), 0x03 }, 449 { IMX415_REG_8BIT(0x3BB8), 0xE0 }, 450 { IMX415_REG_8BIT(0x3BBA), 0xE0 }, 451 { IMX415_REG_8BIT(0x3BBC), 0xDA }, 452 { IMX415_REG_8BIT(0x3BBE), 0x88 }, 453 { IMX415_REG_8BIT(0x3BC0), 0x44 }, 454 { IMX415_REG_8BIT(0x3BC2), 0x7B }, 455 { IMX415_REG_8BIT(0x3BC4), 0xA2 }, 456 { IMX415_REG_8BIT(0x3BC8), 0xBD }, 457 { IMX415_REG_8BIT(0x3BCA), 0xBD }, 458}; 459 460static inline struct imx415 *to_imx415(struct v4l2_subdev *sd) 461{ 462 return container_of(sd, struct imx415, subdev); 463} 464 465static int imx415_read(struct imx415 *sensor, u32 addr) 466{ 467 u8 data[3] = { 0 }; 468 int ret; 469 470 ret = regmap_raw_read(sensor->regmap, addr & IMX415_REG_ADDR_MASK, data, 471 (addr >> IMX415_REG_SIZE_SHIFT) & 3); 472 if (ret < 0) 473 return ret; 474 475 return (data[2] << 16) | (data[1] << 8) | data[0]; 476} 477 478static int imx415_write(struct imx415 *sensor, u32 addr, u32 value) 479{ 480 u8 data[3] = { value & 0xff, (value >> 8) & 0xff, value >> 16 }; 481 int ret; 482 483 ret = regmap_raw_write(sensor->regmap, addr & IMX415_REG_ADDR_MASK, 484 data, (addr >> IMX415_REG_SIZE_SHIFT) & 3); 485 if (ret < 0) 486 dev_err_ratelimited(sensor->dev, 487 "%u-bit write to 0x%04x failed: %d\n", 488 ((addr >> IMX415_REG_SIZE_SHIFT) & 3) * 8, 489 addr & IMX415_REG_ADDR_MASK, ret); 490 491 return 0; 492} 493 494static int imx415_set_testpattern(struct imx415 *sensor, int val) 495{ 496 int ret; 497 498 if (val) { 499 ret = imx415_write(sensor, IMX415_BLKLEVEL, 0x00); 500 if (ret) 501 return ret; 502 ret = imx415_write(sensor, IMX415_TPG_EN_DUOUT, 0x01); 503 if (ret) 504 return ret; 505 ret = imx415_write(sensor, IMX415_TPG_PATSEL_DUOUT, val - 1); 506 if (ret) 507 return ret; 508 ret = imx415_write(sensor, IMX415_TPG_COLORWIDTH, 0x01); 509 if (ret) 510 return ret; 511 ret = imx415_write(sensor, IMX415_TESTCLKEN_MIPI, 0x20); 512 if (ret) 513 return ret; 514 ret = imx415_write(sensor, IMX415_DIG_CLP_MODE, 0x00); 515 if (ret) 516 return ret; 517 ret = imx415_write(sensor, IMX415_WRJ_OPEN, 0x00); 518 } else { 519 ret = imx415_write(sensor, IMX415_BLKLEVEL, 520 IMX415_BLKLEVEL_DEFAULT); 521 if (ret) 522 return ret; 523 ret = imx415_write(sensor, IMX415_TPG_EN_DUOUT, 0x00); 524 if (ret) 525 return ret; 526 ret = imx415_write(sensor, IMX415_TESTCLKEN_MIPI, 0x00); 527 if (ret) 528 return ret; 529 ret = imx415_write(sensor, IMX415_DIG_CLP_MODE, 0x01); 530 if (ret) 531 return ret; 532 ret = imx415_write(sensor, IMX415_WRJ_OPEN, 0x01); 533 } 534 return 0; 535} 536 537static int imx415_s_ctrl(struct v4l2_ctrl *ctrl) 538{ 539 struct imx415 *sensor = container_of(ctrl->handler, struct imx415, 540 ctrls); 541 const struct v4l2_mbus_framefmt *format; 542 struct v4l2_subdev_state *state; 543 unsigned int vmax; 544 unsigned int flip; 545 546 if (!sensor->streaming) 547 return 0; 548 549 state = v4l2_subdev_get_locked_active_state(&sensor->subdev); 550 format = v4l2_subdev_get_pad_format(&sensor->subdev, state, 0); 551 552 switch (ctrl->id) { 553 case V4L2_CID_EXPOSURE: 554 /* clamp the exposure value to VMAX. */ 555 vmax = format->height + sensor->vblank->cur.val; 556 ctrl->val = min_t(int, ctrl->val, vmax); 557 return imx415_write(sensor, IMX415_SHR0, vmax - ctrl->val); 558 559 case V4L2_CID_ANALOGUE_GAIN: 560 /* analogue gain in 0.3 dB step size */ 561 return imx415_write(sensor, IMX415_GAIN_PCG_0, ctrl->val); 562 563 case V4L2_CID_HFLIP: 564 case V4L2_CID_VFLIP: 565 flip = (sensor->hflip->val << IMX415_HREVERSE_SHIFT) | 566 (sensor->vflip->val << IMX415_VREVERSE_SHIFT); 567 return imx415_write(sensor, IMX415_REVERSE, flip); 568 569 case V4L2_CID_TEST_PATTERN: 570 return imx415_set_testpattern(sensor, ctrl->val); 571 572 default: 573 return -EINVAL; 574 } 575} 576 577static const struct v4l2_ctrl_ops imx415_ctrl_ops = { 578 .s_ctrl = imx415_s_ctrl, 579}; 580 581static int imx415_ctrls_init(struct imx415 *sensor) 582{ 583 struct v4l2_fwnode_device_properties props; 584 struct v4l2_ctrl *ctrl; 585 u64 pixel_rate = supported_modes[sensor->cur_mode].pixel_rate; 586 u64 lane_rate = supported_modes[sensor->cur_mode].lane_rate; 587 u32 exposure_max = IMX415_PIXEL_ARRAY_HEIGHT + 588 IMX415_PIXEL_ARRAY_VBLANK - 8; 589 u32 hblank; 590 unsigned int i; 591 int ret; 592 593 ret = v4l2_fwnode_device_parse(sensor->dev, &props); 594 if (ret < 0) 595 return ret; 596 597 v4l2_ctrl_handler_init(&sensor->ctrls, 10); 598 599 for (i = 0; i < ARRAY_SIZE(link_freq_menu_items); ++i) { 600 if (lane_rate == link_freq_menu_items[i] * 2) 601 break; 602 } 603 if (i == ARRAY_SIZE(link_freq_menu_items)) { 604 return dev_err_probe(sensor->dev, -EINVAL, 605 "lane rate %llu not supported\n", 606 lane_rate); 607 } 608 609 ctrl = v4l2_ctrl_new_int_menu(&sensor->ctrls, &imx415_ctrl_ops, 610 V4L2_CID_LINK_FREQ, 611 ARRAY_SIZE(link_freq_menu_items) - 1, i, 612 link_freq_menu_items); 613 614 if (ctrl) 615 ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; 616 617 v4l2_ctrl_new_std(&sensor->ctrls, &imx415_ctrl_ops, V4L2_CID_EXPOSURE, 618 4, exposure_max, 1, exposure_max); 619 620 v4l2_ctrl_new_std(&sensor->ctrls, &imx415_ctrl_ops, 621 V4L2_CID_ANALOGUE_GAIN, IMX415_AGAIN_MIN, 622 IMX415_AGAIN_MAX, IMX415_AGAIN_STEP, 623 IMX415_AGAIN_MIN); 624 625 hblank = supported_modes[sensor->cur_mode].hmax_pix - 626 IMX415_PIXEL_ARRAY_WIDTH; 627 ctrl = v4l2_ctrl_new_std(&sensor->ctrls, &imx415_ctrl_ops, 628 V4L2_CID_HBLANK, hblank, hblank, 1, hblank); 629 if (ctrl) 630 ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; 631 632 sensor->vblank = v4l2_ctrl_new_std(&sensor->ctrls, &imx415_ctrl_ops, 633 V4L2_CID_VBLANK, 634 IMX415_PIXEL_ARRAY_VBLANK, 635 IMX415_PIXEL_ARRAY_VBLANK, 1, 636 IMX415_PIXEL_ARRAY_VBLANK); 637 if (sensor->vblank) 638 sensor->vblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; 639 640 /* 641 * The pixel rate used here is a virtual value and can be used for 642 * calculating the frame rate together with hblank. It may not 643 * necessarily be the physically correct pixel clock. 644 */ 645 v4l2_ctrl_new_std(&sensor->ctrls, NULL, V4L2_CID_PIXEL_RATE, pixel_rate, 646 pixel_rate, 1, pixel_rate); 647 648 sensor->hflip = v4l2_ctrl_new_std(&sensor->ctrls, &imx415_ctrl_ops, 649 V4L2_CID_HFLIP, 0, 1, 1, 0); 650 sensor->vflip = v4l2_ctrl_new_std(&sensor->ctrls, &imx415_ctrl_ops, 651 V4L2_CID_VFLIP, 0, 1, 1, 0); 652 653 v4l2_ctrl_new_std_menu_items(&sensor->ctrls, &imx415_ctrl_ops, 654 V4L2_CID_TEST_PATTERN, 655 ARRAY_SIZE(imx415_test_pattern_menu) - 1, 656 0, 0, imx415_test_pattern_menu); 657 658 v4l2_ctrl_new_fwnode_properties(&sensor->ctrls, &imx415_ctrl_ops, 659 &props); 660 661 if (sensor->ctrls.error) { 662 dev_err_probe(sensor->dev, sensor->ctrls.error, 663 "failed to add controls\n"); 664 v4l2_ctrl_handler_free(&sensor->ctrls); 665 return sensor->ctrls.error; 666 } 667 sensor->subdev.ctrl_handler = &sensor->ctrls; 668 669 return 0; 670} 671 672static int imx415_set_mode(struct imx415 *sensor, int mode) 673{ 674 const struct imx415_reg *reg; 675 unsigned int i; 676 int ret = 0; 677 678 if (mode >= ARRAY_SIZE(supported_modes)) { 679 dev_err(sensor->dev, "Mode %d not supported\n", mode); 680 return -EINVAL; 681 } 682 683 for (i = 0; i < supported_modes[mode].reg_list.num_of_regs; ++i) { 684 reg = &supported_modes[mode].reg_list.regs[i]; 685 ret = imx415_write(sensor, reg->address, reg->val); 686 if (ret) 687 return ret; 688 } 689 690 for (i = 0; i < IMX415_NUM_CLK_PARAM_REGS; ++i) { 691 reg = &sensor->clk_params->regs[i]; 692 ret = imx415_write(sensor, reg->address, reg->val); 693 if (ret) 694 return ret; 695 } 696 697 return 0; 698} 699 700static int imx415_setup(struct imx415 *sensor, struct v4l2_subdev_state *state) 701{ 702 unsigned int i; 703 int ret; 704 705 for (i = 0; i < ARRAY_SIZE(imx415_init_table); ++i) { 706 ret = imx415_write(sensor, imx415_init_table[i].address, 707 imx415_init_table[i].val); 708 if (ret) 709 return ret; 710 } 711 712 return imx415_set_mode(sensor, sensor->cur_mode); 713} 714 715static int imx415_wakeup(struct imx415 *sensor) 716{ 717 int ret; 718 719 ret = imx415_write(sensor, IMX415_MODE, IMX415_MODE_OPERATING); 720 if (ret) 721 return ret; 722 723 /* 724 * According to the datasheet we have to wait at least 63 us after 725 * leaving standby mode. But this doesn't work even after 30 ms. 726 * So probably this should be 63 ms and therefore we wait for 80 ms. 727 */ 728 msleep(80); 729 730 return 0; 731} 732 733static int imx415_stream_on(struct imx415 *sensor) 734{ 735 int ret; 736 737 ret = imx415_wakeup(sensor); 738 if (ret) 739 return ret; 740 741 return imx415_write(sensor, IMX415_XMSTA, IMX415_XMSTA_START); 742} 743 744static int imx415_stream_off(struct imx415 *sensor) 745{ 746 int ret; 747 748 ret = imx415_write(sensor, IMX415_XMSTA, IMX415_XMSTA_STOP); 749 if (ret) 750 return ret; 751 752 return imx415_write(sensor, IMX415_MODE, IMX415_MODE_STANDBY); 753} 754 755static int imx415_s_stream(struct v4l2_subdev *sd, int enable) 756{ 757 struct imx415 *sensor = to_imx415(sd); 758 struct v4l2_subdev_state *state; 759 int ret; 760 761 state = v4l2_subdev_lock_and_get_active_state(sd); 762 763 if (!enable) { 764 ret = imx415_stream_off(sensor); 765 766 pm_runtime_mark_last_busy(sensor->dev); 767 pm_runtime_put_autosuspend(sensor->dev); 768 769 sensor->streaming = false; 770 771 goto unlock; 772 } 773 774 ret = pm_runtime_resume_and_get(sensor->dev); 775 if (ret < 0) 776 goto unlock; 777 778 ret = imx415_setup(sensor, state); 779 if (ret) 780 goto err_pm; 781 782 /* 783 * Set streaming to true to ensure __v4l2_ctrl_handler_setup() will set 784 * the controls. The flag is reset to false further down if an error 785 * occurs. 786 */ 787 sensor->streaming = true; 788 789 ret = __v4l2_ctrl_handler_setup(&sensor->ctrls); 790 if (ret < 0) 791 goto err_pm; 792 793 ret = imx415_stream_on(sensor); 794 if (ret) 795 goto err_pm; 796 797 ret = 0; 798 799unlock: 800 v4l2_subdev_unlock_state(state); 801 802 return ret; 803 804err_pm: 805 /* 806 * In case of error, turn the power off synchronously as the device 807 * likely has no other chance to recover. 808 */ 809 pm_runtime_put_sync(sensor->dev); 810 sensor->streaming = false; 811 812 goto unlock; 813} 814 815static int imx415_enum_mbus_code(struct v4l2_subdev *sd, 816 struct v4l2_subdev_state *state, 817 struct v4l2_subdev_mbus_code_enum *code) 818{ 819 if (code->index != 0) 820 return -EINVAL; 821 822 code->code = MEDIA_BUS_FMT_SGBRG10_1X10; 823 824 return 0; 825} 826 827static int imx415_enum_frame_size(struct v4l2_subdev *sd, 828 struct v4l2_subdev_state *state, 829 struct v4l2_subdev_frame_size_enum *fse) 830{ 831 const struct v4l2_mbus_framefmt *format; 832 833 format = v4l2_subdev_get_pad_format(sd, state, fse->pad); 834 835 if (fse->index > 0 || fse->code != format->code) 836 return -EINVAL; 837 838 fse->min_width = IMX415_PIXEL_ARRAY_WIDTH; 839 fse->max_width = fse->min_width; 840 fse->min_height = IMX415_PIXEL_ARRAY_HEIGHT; 841 fse->max_height = fse->min_height; 842 return 0; 843} 844 845static int imx415_get_format(struct v4l2_subdev *sd, 846 struct v4l2_subdev_state *state, 847 struct v4l2_subdev_format *fmt) 848{ 849 fmt->format = *v4l2_subdev_get_pad_format(sd, state, fmt->pad); 850 851 return 0; 852} 853 854static int imx415_set_format(struct v4l2_subdev *sd, 855 struct v4l2_subdev_state *state, 856 struct v4l2_subdev_format *fmt) 857{ 858 struct v4l2_mbus_framefmt *format; 859 860 format = v4l2_subdev_get_pad_format(sd, state, fmt->pad); 861 862 format->width = fmt->format.width; 863 format->height = fmt->format.height; 864 format->code = MEDIA_BUS_FMT_SGBRG10_1X10; 865 format->field = V4L2_FIELD_NONE; 866 format->colorspace = V4L2_COLORSPACE_RAW; 867 format->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; 868 format->quantization = V4L2_QUANTIZATION_DEFAULT; 869 format->xfer_func = V4L2_XFER_FUNC_NONE; 870 871 fmt->format = *format; 872 return 0; 873} 874 875static int imx415_get_selection(struct v4l2_subdev *sd, 876 struct v4l2_subdev_state *sd_state, 877 struct v4l2_subdev_selection *sel) 878{ 879 switch (sel->target) { 880 case V4L2_SEL_TGT_CROP: 881 case V4L2_SEL_TGT_CROP_DEFAULT: 882 case V4L2_SEL_TGT_CROP_BOUNDS: 883 sel->r.top = IMX415_PIXEL_ARRAY_TOP; 884 sel->r.left = IMX415_PIXEL_ARRAY_LEFT; 885 sel->r.width = IMX415_PIXEL_ARRAY_WIDTH; 886 sel->r.height = IMX415_PIXEL_ARRAY_HEIGHT; 887 888 return 0; 889 } 890 891 return -EINVAL; 892} 893 894static int imx415_init_cfg(struct v4l2_subdev *sd, 895 struct v4l2_subdev_state *state) 896{ 897 struct v4l2_subdev_format format = { 898 .format = { 899 .width = IMX415_PIXEL_ARRAY_WIDTH, 900 .height = IMX415_PIXEL_ARRAY_HEIGHT, 901 }, 902 }; 903 904 imx415_set_format(sd, state, &format); 905 906 return 0; 907} 908 909static const struct v4l2_subdev_video_ops imx415_subdev_video_ops = { 910 .s_stream = imx415_s_stream, 911}; 912 913static const struct v4l2_subdev_pad_ops imx415_subdev_pad_ops = { 914 .enum_mbus_code = imx415_enum_mbus_code, 915 .enum_frame_size = imx415_enum_frame_size, 916 .get_fmt = imx415_get_format, 917 .set_fmt = imx415_set_format, 918 .get_selection = imx415_get_selection, 919 .init_cfg = imx415_init_cfg, 920}; 921 922static const struct v4l2_subdev_ops imx415_subdev_ops = { 923 .video = &imx415_subdev_video_ops, 924 .pad = &imx415_subdev_pad_ops, 925}; 926 927static int imx415_subdev_init(struct imx415 *sensor) 928{ 929 struct i2c_client *client = to_i2c_client(sensor->dev); 930 int ret; 931 932 v4l2_i2c_subdev_init(&sensor->subdev, client, &imx415_subdev_ops); 933 934 ret = imx415_ctrls_init(sensor); 935 if (ret) 936 return ret; 937 938 sensor->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | 939 V4L2_SUBDEV_FL_HAS_EVENTS; 940 sensor->pad.flags = MEDIA_PAD_FL_SOURCE; 941 sensor->subdev.entity.function = MEDIA_ENT_F_CAM_SENSOR; 942 ret = media_entity_pads_init(&sensor->subdev.entity, 1, &sensor->pad); 943 if (ret < 0) { 944 v4l2_ctrl_handler_free(&sensor->ctrls); 945 return ret; 946 } 947 948 sensor->subdev.state_lock = sensor->subdev.ctrl_handler->lock; 949 v4l2_subdev_init_finalize(&sensor->subdev); 950 951 return 0; 952} 953 954static void imx415_subdev_cleanup(struct imx415 *sensor) 955{ 956 media_entity_cleanup(&sensor->subdev.entity); 957 v4l2_ctrl_handler_free(&sensor->ctrls); 958} 959 960static int imx415_power_on(struct imx415 *sensor) 961{ 962 int ret; 963 964 ret = regulator_bulk_enable(ARRAY_SIZE(sensor->supplies), 965 sensor->supplies); 966 if (ret < 0) 967 return ret; 968 969 gpiod_set_value_cansleep(sensor->reset, 0); 970 971 udelay(1); 972 973 ret = clk_prepare_enable(sensor->clk); 974 if (ret < 0) 975 goto err_reset; 976 977 /* 978 * Data sheet states that 20 us are required before communication start, 979 * but this doesn't work in all cases. Use 100 us to be on the safe 980 * side. 981 */ 982 usleep_range(100, 200); 983 984 return 0; 985 986err_reset: 987 gpiod_set_value_cansleep(sensor->reset, 1); 988 regulator_bulk_disable(ARRAY_SIZE(sensor->supplies), sensor->supplies); 989 return ret; 990} 991 992static void imx415_power_off(struct imx415 *sensor) 993{ 994 clk_disable_unprepare(sensor->clk); 995 gpiod_set_value_cansleep(sensor->reset, 1); 996 regulator_bulk_disable(ARRAY_SIZE(sensor->supplies), sensor->supplies); 997} 998 999static int imx415_identify_model(struct imx415 *sensor) 1000{ 1001 int model, ret; 1002 1003 /* 1004 * While most registers can be read when the sensor is in standby, this 1005 * is not the case of the sensor info register :-( 1006 */ 1007 ret = imx415_wakeup(sensor); 1008 if (ret) 1009 return dev_err_probe(sensor->dev, ret, 1010 "failed to get sensor out of standby\n"); 1011 1012 ret = imx415_read(sensor, IMX415_SENSOR_INFO); 1013 if (ret < 0) { 1014 dev_err_probe(sensor->dev, ret, 1015 "failed to read sensor information\n"); 1016 goto done; 1017 } 1018 1019 model = ret & IMX415_SENSOR_INFO_MASK; 1020 1021 switch (model) { 1022 case IMX415_CHIP_ID: 1023 dev_info(sensor->dev, "Detected IMX415 image sensor\n"); 1024 break; 1025 default: 1026 ret = dev_err_probe(sensor->dev, -ENODEV, 1027 "invalid device model 0x%04x\n", model); 1028 goto done; 1029 } 1030 1031 ret = 0; 1032 1033done: 1034 imx415_write(sensor, IMX415_MODE, IMX415_MODE_STANDBY); 1035 return ret; 1036} 1037 1038static int imx415_check_inck(unsigned long inck, u64 link_frequency) 1039{ 1040 unsigned int i; 1041 1042 for (i = 0; i < ARRAY_SIZE(imx415_clk_params); ++i) { 1043 if ((imx415_clk_params[i].lane_rate == link_frequency * 2) && 1044 imx415_clk_params[i].inck == inck) 1045 break; 1046 } 1047 1048 if (i == ARRAY_SIZE(imx415_clk_params)) 1049 return -EINVAL; 1050 else 1051 return 0; 1052} 1053 1054static int imx415_parse_hw_config(struct imx415 *sensor) 1055{ 1056 struct v4l2_fwnode_endpoint bus_cfg = { 1057 .bus_type = V4L2_MBUS_CSI2_DPHY, 1058 }; 1059 struct fwnode_handle *ep; 1060 u64 lane_rate; 1061 unsigned long inck; 1062 unsigned int i, j; 1063 int ret; 1064 1065 for (i = 0; i < ARRAY_SIZE(sensor->supplies); ++i) 1066 sensor->supplies[i].supply = imx415_supply_names[i]; 1067 1068 ret = devm_regulator_bulk_get(sensor->dev, ARRAY_SIZE(sensor->supplies), 1069 sensor->supplies); 1070 if (ret) 1071 return dev_err_probe(sensor->dev, ret, 1072 "failed to get supplies\n"); 1073 1074 sensor->reset = devm_gpiod_get_optional(sensor->dev, "reset", 1075 GPIOD_OUT_HIGH); 1076 if (IS_ERR(sensor->reset)) 1077 return dev_err_probe(sensor->dev, PTR_ERR(sensor->reset), 1078 "failed to get reset GPIO\n"); 1079 1080 sensor->clk = devm_clk_get(sensor->dev, "inck"); 1081 if (IS_ERR(sensor->clk)) 1082 return dev_err_probe(sensor->dev, PTR_ERR(sensor->clk), 1083 "failed to get clock\n"); 1084 1085 ep = fwnode_graph_get_next_endpoint(dev_fwnode(sensor->dev), NULL); 1086 if (!ep) 1087 return -ENXIO; 1088 1089 ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); 1090 fwnode_handle_put(ep); 1091 if (ret) 1092 return ret; 1093 1094 switch (bus_cfg.bus.mipi_csi2.num_data_lanes) { 1095 case 2: 1096 case 4: 1097 sensor->num_data_lanes = bus_cfg.bus.mipi_csi2.num_data_lanes; 1098 break; 1099 default: 1100 ret = dev_err_probe(sensor->dev, -EINVAL, 1101 "invalid number of CSI2 data lanes %d\n", 1102 bus_cfg.bus.mipi_csi2.num_data_lanes); 1103 goto done_endpoint_free; 1104 } 1105 1106 if (!bus_cfg.nr_of_link_frequencies) { 1107 ret = dev_err_probe(sensor->dev, -EINVAL, 1108 "no link frequencies defined"); 1109 goto done_endpoint_free; 1110 } 1111 1112 /* 1113 * Check if there exists a sensor mode defined for current INCK, 1114 * number of lanes and given lane rates. 1115 */ 1116 inck = clk_get_rate(sensor->clk); 1117 for (i = 0; i < bus_cfg.nr_of_link_frequencies; ++i) { 1118 if (imx415_check_inck(inck, bus_cfg.link_frequencies[i])) { 1119 dev_dbg(sensor->dev, 1120 "INCK %lu Hz not supported for this link freq", 1121 inck); 1122 continue; 1123 } 1124 1125 for (j = 0; j < ARRAY_SIZE(supported_modes); ++j) { 1126 if (sensor->num_data_lanes != supported_modes[j].lanes) 1127 continue; 1128 if (bus_cfg.link_frequencies[i] * 2 != 1129 supported_modes[j].lane_rate) 1130 continue; 1131 sensor->cur_mode = j; 1132 break; 1133 } 1134 if (j < ARRAY_SIZE(supported_modes)) 1135 break; 1136 } 1137 if (i == bus_cfg.nr_of_link_frequencies) { 1138 ret = dev_err_probe(sensor->dev, -EINVAL, 1139 "no valid sensor mode defined\n"); 1140 goto done_endpoint_free; 1141 } 1142 1143 lane_rate = supported_modes[sensor->cur_mode].lane_rate; 1144 for (i = 0; i < ARRAY_SIZE(imx415_clk_params); ++i) { 1145 if (lane_rate == imx415_clk_params[i].lane_rate && 1146 inck == imx415_clk_params[i].inck) { 1147 sensor->clk_params = &imx415_clk_params[i]; 1148 break; 1149 } 1150 } 1151 if (i == ARRAY_SIZE(imx415_clk_params)) { 1152 ret = dev_err_probe(sensor->dev, -EINVAL, 1153 "Mode %d not supported\n", 1154 sensor->cur_mode); 1155 goto done_endpoint_free; 1156 } 1157 1158 ret = 0; 1159 dev_dbg(sensor->dev, "clock: %lu Hz, lane_rate: %llu bps, lanes: %d\n", 1160 inck, lane_rate, sensor->num_data_lanes); 1161 1162done_endpoint_free: 1163 v4l2_fwnode_endpoint_free(&bus_cfg); 1164 1165 return ret; 1166} 1167 1168static int imx415_probe(struct i2c_client *client) 1169{ 1170 struct imx415 *sensor; 1171 int ret; 1172 1173 sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL); 1174 if (!sensor) 1175 return -ENOMEM; 1176 1177 sensor->dev = &client->dev; 1178 1179 ret = imx415_parse_hw_config(sensor); 1180 if (ret) 1181 return ret; 1182 1183 sensor->regmap = devm_regmap_init_i2c(client, &imx415_regmap_config); 1184 if (IS_ERR(sensor->regmap)) 1185 return PTR_ERR(sensor->regmap); 1186 1187 /* 1188 * Enable power management. The driver supports runtime PM, but needs to 1189 * work when runtime PM is disabled in the kernel. To that end, power 1190 * the sensor on manually here, identify it, and fully initialize it. 1191 */ 1192 ret = imx415_power_on(sensor); 1193 if (ret) 1194 return ret; 1195 1196 ret = imx415_identify_model(sensor); 1197 if (ret) 1198 goto err_power; 1199 1200 ret = imx415_subdev_init(sensor); 1201 if (ret) 1202 goto err_power; 1203 1204 /* 1205 * Enable runtime PM. As the device has been powered manually, mark it 1206 * as active, and increase the usage count without resuming the device. 1207 */ 1208 pm_runtime_set_active(sensor->dev); 1209 pm_runtime_get_noresume(sensor->dev); 1210 pm_runtime_enable(sensor->dev); 1211 1212 ret = v4l2_async_register_subdev_sensor(&sensor->subdev); 1213 if (ret < 0) 1214 goto err_pm; 1215 1216 /* 1217 * Finally, enable autosuspend and decrease the usage count. The device 1218 * will get suspended after the autosuspend delay, turning the power 1219 * off. 1220 */ 1221 pm_runtime_set_autosuspend_delay(sensor->dev, 1000); 1222 pm_runtime_use_autosuspend(sensor->dev); 1223 pm_runtime_put_autosuspend(sensor->dev); 1224 1225 return 0; 1226 1227err_pm: 1228 pm_runtime_disable(sensor->dev); 1229 pm_runtime_put_noidle(sensor->dev); 1230 imx415_subdev_cleanup(sensor); 1231err_power: 1232 imx415_power_off(sensor); 1233 return ret; 1234} 1235 1236static void imx415_remove(struct i2c_client *client) 1237{ 1238 struct v4l2_subdev *subdev = i2c_get_clientdata(client); 1239 struct imx415 *sensor = to_imx415(subdev); 1240 1241 v4l2_async_unregister_subdev(subdev); 1242 1243 imx415_subdev_cleanup(sensor); 1244 1245 /* 1246 * Disable runtime PM. In case runtime PM is disabled in the kernel, 1247 * make sure to turn power off manually. 1248 */ 1249 pm_runtime_disable(sensor->dev); 1250 if (!pm_runtime_status_suspended(sensor->dev)) 1251 imx415_power_off(sensor); 1252 pm_runtime_set_suspended(sensor->dev); 1253} 1254 1255static int imx415_runtime_resume(struct device *dev) 1256{ 1257 struct i2c_client *client = to_i2c_client(dev); 1258 struct v4l2_subdev *subdev = i2c_get_clientdata(client); 1259 struct imx415 *sensor = to_imx415(subdev); 1260 1261 return imx415_power_on(sensor); 1262} 1263 1264static int imx415_runtime_suspend(struct device *dev) 1265{ 1266 struct i2c_client *client = to_i2c_client(dev); 1267 struct v4l2_subdev *subdev = i2c_get_clientdata(client); 1268 struct imx415 *sensor = to_imx415(subdev); 1269 1270 imx415_power_off(sensor); 1271 1272 return 0; 1273} 1274 1275static DEFINE_RUNTIME_DEV_PM_OPS(imx415_pm_ops, imx415_runtime_suspend, 1276 imx415_runtime_resume, NULL); 1277 1278static const struct of_device_id imx415_of_match[] = { 1279 { .compatible = "sony,imx415" }, 1280 { /* sentinel */ } 1281}; 1282 1283MODULE_DEVICE_TABLE(of, imx415_of_match); 1284 1285static struct i2c_driver imx415_driver = { 1286 .probe = imx415_probe, 1287 .remove = imx415_remove, 1288 .driver = { 1289 .name = "imx415", 1290 .of_match_table = imx415_of_match, 1291 .pm = pm_ptr(&imx415_pm_ops), 1292 }, 1293}; 1294 1295module_i2c_driver(imx415_driver); 1296 1297MODULE_DESCRIPTION("Sony IMX415 image sensor driver"); 1298MODULE_AUTHOR("Gerald Loacker <gerald.loacker@wolfvision.net>"); 1299MODULE_AUTHOR("Michael Riesch <michael.riesch@wolfvision.net>"); 1300MODULE_LICENSE("GPL"); 1301