1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Sony imx335 Camera Sensor Driver 4 * 5 * Copyright (C) 2021 Intel Corporation 6 */ 7 #include <linux/unaligned.h> 8 9 #include <linux/clk.h> 10 #include <linux/delay.h> 11 #include <linux/i2c.h> 12 #include <linux/module.h> 13 #include <linux/pm_runtime.h> 14 #include <linux/regmap.h> 15 16 #include <media/v4l2-cci.h> 17 #include <media/v4l2-ctrls.h> 18 #include <media/v4l2-fwnode.h> 19 #include <media/v4l2-subdev.h> 20 21 /* Streaming Mode */ 22 #define IMX335_REG_MODE_SELECT CCI_REG8(0x3000) 23 #define IMX335_MODE_STANDBY 0x01 24 #define IMX335_MODE_STREAMING 0x00 25 26 /* Group hold register */ 27 #define IMX335_REG_HOLD CCI_REG8(0x3001) 28 29 #define IMX335_REG_MASTER_MODE CCI_REG8(0x3002) 30 #define IMX335_REG_BCWAIT_TIME CCI_REG8(0x300c) 31 #define IMX335_REG_CPWAIT_TIME CCI_REG8(0x300d) 32 #define IMX335_REG_WINMODE CCI_REG8(0x3018) 33 #define IMX335_REG_HTRIMMING_START CCI_REG16_LE(0x302c) 34 #define IMX335_REG_HNUM CCI_REG16_LE(0x302e) 35 36 /* Lines per frame */ 37 #define IMX335_REG_VMAX CCI_REG24_LE(0x3030) 38 #define IMX335_REG_HMAX CCI_REG16_LE(0x3034) 39 40 #define IMX335_REG_OPB_SIZE_V CCI_REG8(0x304c) 41 #define IMX335_REG_ADBIT CCI_REG8(0x3050) 42 #define IMX335_REG_Y_OUT_SIZE CCI_REG16_LE(0x3056) 43 44 #define IMX335_REG_SHUTTER CCI_REG24_LE(0x3058) 45 #define IMX335_EXPOSURE_MIN 1 46 #define IMX335_SHUTTER_MIN 9 47 #define IMX335_SHUTTER_MIN_BINNED 17 48 #define IMX335_EXPOSURE_STEP 1 49 #define IMX335_EXPOSURE_DEFAULT 0x0648 50 51 #define IMX335_REG_AREA2_WIDTH_1 CCI_REG16_LE(0x3072) 52 53 #define IMX335_REG_AREA3_ST_ADR_1 CCI_REG16_LE(0x3074) 54 #define IMX335_REG_AREA3_WIDTH_1 CCI_REG16_LE(0x3076) 55 56 /* Analog and Digital gain control */ 57 #define IMX335_REG_GAIN CCI_REG8(0x30e8) 58 #define IMX335_AGAIN_MIN 0 59 #define IMX335_AGAIN_MAX 100 60 #define IMX335_AGAIN_STEP 1 61 #define IMX335_AGAIN_DEFAULT 0 62 63 /* Vertical flip */ 64 #define IMX335_REG_VREVERSE CCI_REG8(0x304f) 65 66 #define IMX335_REG_TPG_TESTCLKEN CCI_REG8(0x3148) 67 68 #define IMX335_REG_INCLKSEL1 CCI_REG16_LE(0x314c) 69 #define IMX335_REG_INCLKSEL2 CCI_REG8(0x315a) 70 #define IMX335_REG_INCLKSEL3 CCI_REG8(0x3168) 71 #define IMX335_REG_INCLKSEL4 CCI_REG8(0x316a) 72 73 #define IMX335_REG_MDBIT CCI_REG8(0x319d) 74 #define IMX335_REG_SYSMODE CCI_REG8(0x319e) 75 76 #define IMX335_REG_XVS_XHS_DRV CCI_REG8(0x31a1) 77 78 /* Test pattern generator */ 79 #define IMX335_REG_TPG_DIG_CLP_MODE CCI_REG8(0x3280) 80 #define IMX335_REG_TPG_EN_DUOUT CCI_REG8(0x329c) 81 #define IMX335_REG_TPG CCI_REG8(0x329e) 82 #define IMX335_TPG_ALL_000 0 83 #define IMX335_TPG_ALL_FFF 1 84 #define IMX335_TPG_ALL_555 2 85 #define IMX335_TPG_ALL_AAA 3 86 #define IMX335_TPG_TOG_555_AAA 4 87 #define IMX335_TPG_TOG_AAA_555 5 88 #define IMX335_TPG_TOG_000_555 6 89 #define IMX335_TPG_TOG_555_000 7 90 #define IMX335_TPG_TOG_000_FFF 8 91 #define IMX335_TPG_TOG_FFF_000 9 92 #define IMX335_TPG_H_COLOR_BARS 10 93 #define IMX335_TPG_V_COLOR_BARS 11 94 #define IMX335_REG_TPG_COLORWIDTH CCI_REG8(0x32a0) 95 96 #define IMX335_REG_BLKLEVEL CCI_REG16_LE(0x3302) 97 98 #define IMX335_REG_WRJ_OPEN CCI_REG8(0x336c) 99 100 #define IMX335_REG_ADBIT1 CCI_REG16_LE(0x341c) 101 102 /* Chip ID */ 103 #define IMX335_REG_ID CCI_REG8(0x3912) 104 #define IMX335_ID 0x00 105 106 /* Data Lanes */ 107 #define IMX335_REG_LANEMODE CCI_REG8(0x3a01) 108 #define IMX335_2LANE 1 109 #define IMX335_4LANE 3 110 111 #define IMX335_REG_TCLKPOST CCI_REG16_LE(0x3a18) 112 #define IMX335_REG_TCLKPREPARE CCI_REG16_LE(0x3a1a) 113 #define IMX335_REG_TCLK_TRAIL CCI_REG16_LE(0x3a1c) 114 #define IMX335_REG_TCLK_ZERO CCI_REG16_LE(0x3a1e) 115 #define IMX335_REG_THS_PREPARE CCI_REG16_LE(0x3a20) 116 #define IMX335_REG_THS_ZERO CCI_REG16_LE(0x3a22) 117 #define IMX335_REG_THS_TRAIL CCI_REG16_LE(0x3a24) 118 #define IMX335_REG_THS_EXIT CCI_REG16_LE(0x3a26) 119 #define IMX335_REG_TPLX CCI_REG16_LE(0x3a28) 120 121 /* Input clock rate */ 122 #define IMX335_INCLK_RATE 24000000 123 124 /* CSI2 HW configuration */ 125 #define IMX335_LINK_FREQ_594MHz 594000000LL 126 #define IMX335_LINK_FREQ_445MHz 445500000LL 127 128 #define IMX335_NUM_DATA_LANES 4 129 130 /* IMX335 native and active pixel array size. */ 131 static const struct v4l2_rect imx335_native_area = { 132 .top = 0, 133 .left = 0, 134 .width = 2696, 135 .height = 2044, 136 }; 137 138 static const struct v4l2_rect imx335_active_area = { 139 .top = 50, 140 .left = 36, 141 .width = 2624, 142 .height = 1944, 143 }; 144 145 /** 146 * struct imx335_reg_list - imx335 sensor register list 147 * @num_of_regs: Number of registers in the list 148 * @regs: Pointer to register list 149 */ 150 struct imx335_reg_list { 151 u32 num_of_regs; 152 const struct cci_reg_sequence *regs; 153 }; 154 155 static const char * const imx335_supply_name[] = { 156 "avdd", /* Analog (2.9V) supply */ 157 "ovdd", /* Digital I/O (1.8V) supply */ 158 "dvdd", /* Digital Core (1.2V) supply */ 159 }; 160 161 enum imx335_scan_mode { 162 IMX335_ALL_PIXEL, 163 IMX335_2_2_BINNING, 164 }; 165 166 /** 167 * struct imx335_mode - imx335 sensor mode structure 168 * @scan_mode: Configuration scan mode (All pixel / 2x2Binning) 169 * @width: Frame width 170 * @height: Frame height 171 * @code: Format code 172 * @hblank: Horizontal blanking in lines 173 * @vblank: Vertical blanking in lines 174 * @vblank_min: Minimum vertical blanking in lines 175 * @vblank_max: Maximum vertical blanking in lines 176 * @pclk: Sensor pixel clock 177 * @reg_list: Register list for sensor mode 178 * @vflip_normal: Register list vflip (normal readout) 179 * @vflip_inverted: Register list vflip (inverted readout) 180 */ 181 struct imx335_mode { 182 enum imx335_scan_mode scan_mode; 183 u32 width; 184 u32 height; 185 u32 code; 186 u32 hblank; 187 u32 vblank; 188 u32 vblank_min; 189 u32 vblank_max; 190 u64 pclk; 191 struct imx335_reg_list reg_list; 192 struct imx335_reg_list vflip_normal; 193 struct imx335_reg_list vflip_inverted; 194 }; 195 196 /** 197 * struct imx335 - imx335 sensor device structure 198 * @dev: Pointer to generic device 199 * @client: Pointer to i2c client 200 * @sd: V4L2 sub-device 201 * @pad: Media pad. Only one pad supported 202 * @reset_gpio: Sensor reset gpio 203 * @supplies: Regulator supplies to handle power control 204 * @cci: CCI register map 205 * @inclk: Sensor input clock 206 * @ctrl_handler: V4L2 control handler 207 * @link_freq_ctrl: Pointer to link frequency control 208 * @pclk_ctrl: Pointer to pixel clock control 209 * @hblank_ctrl: Pointer to horizontal blanking control 210 * @vblank_ctrl: Pointer to vertical blanking control 211 * @vflip: Pointer to vertical flip control 212 * @exp_ctrl: Pointer to exposure control 213 * @again_ctrl: Pointer to analog gain control 214 * @vblank: Vertical blanking in lines 215 * @lane_mode: Mode for number of connected data lanes 216 * @cur_mode: Pointer to current selected sensor mode 217 * @link_freq_bitmap: Menu bitmap for link_freq_ctrl 218 * @cur_mbus_code: Currently selected media bus format code 219 */ 220 struct imx335 { 221 struct device *dev; 222 struct i2c_client *client; 223 struct v4l2_subdev sd; 224 struct media_pad pad; 225 struct gpio_desc *reset_gpio; 226 struct regulator_bulk_data supplies[ARRAY_SIZE(imx335_supply_name)]; 227 struct regmap *cci; 228 229 struct clk *inclk; 230 struct v4l2_ctrl_handler ctrl_handler; 231 struct v4l2_ctrl *link_freq_ctrl; 232 struct v4l2_ctrl *pclk_ctrl; 233 struct v4l2_ctrl *hblank_ctrl; 234 struct v4l2_ctrl *vblank_ctrl; 235 struct v4l2_ctrl *vflip; 236 struct { 237 struct v4l2_ctrl *exp_ctrl; 238 struct v4l2_ctrl *again_ctrl; 239 }; 240 u32 vblank; 241 u32 lane_mode; 242 const struct imx335_mode *cur_mode; 243 unsigned long link_freq_bitmap; 244 u32 cur_mbus_code; 245 }; 246 247 static const char * const imx335_tpg_menu[] = { 248 "Disabled", 249 "All 000h", 250 "All FFFh", 251 "All 555h", 252 "All AAAh", 253 "Toggle 555/AAAh", 254 "Toggle AAA/555h", 255 "Toggle 000/555h", 256 "Toggle 555/000h", 257 "Toggle 000/FFFh", 258 "Toggle FFF/000h", 259 "Horizontal color bars", 260 "Vertical color bars", 261 }; 262 263 static const int imx335_tpg_val[] = { 264 IMX335_TPG_ALL_000, 265 IMX335_TPG_ALL_000, 266 IMX335_TPG_ALL_FFF, 267 IMX335_TPG_ALL_555, 268 IMX335_TPG_ALL_AAA, 269 IMX335_TPG_TOG_555_AAA, 270 IMX335_TPG_TOG_AAA_555, 271 IMX335_TPG_TOG_000_555, 272 IMX335_TPG_TOG_555_000, 273 IMX335_TPG_TOG_000_FFF, 274 IMX335_TPG_TOG_FFF_000, 275 IMX335_TPG_H_COLOR_BARS, 276 IMX335_TPG_V_COLOR_BARS, 277 }; 278 279 /* Sensor mode registers */ 280 static const struct cci_reg_sequence mode_2592x1944_regs[] = { 281 { IMX335_REG_MODE_SELECT, IMX335_MODE_STANDBY }, 282 { IMX335_REG_MASTER_MODE, 0x00 }, 283 { IMX335_REG_WINMODE, 0x04 }, 284 { IMX335_REG_HMAX, 550 }, 285 { IMX335_REG_HTRIMMING_START, 48 }, 286 { IMX335_REG_HNUM, 2592 }, 287 { IMX335_REG_Y_OUT_SIZE, 1944 }, 288 { IMX335_REG_AREA2_WIDTH_1, 40 }, 289 { IMX335_REG_AREA3_WIDTH_1, 3928 }, 290 { IMX335_REG_OPB_SIZE_V, 0 }, 291 { IMX335_REG_XVS_XHS_DRV, 0x00 }, 292 }; 293 294 static const struct cci_reg_sequence mode_1312x972_regs[] = { 295 { IMX335_REG_MODE_SELECT, IMX335_MODE_STANDBY }, 296 { IMX335_REG_MASTER_MODE, 0x00 }, 297 { IMX335_REG_WINMODE, 0x01 }, 298 { IMX335_REG_HMAX, 275 }, 299 { IMX335_REG_HTRIMMING_START, 48 }, 300 { IMX335_REG_HNUM, 2600 }, 301 { IMX335_REG_Y_OUT_SIZE, 972 }, 302 { IMX335_REG_AREA2_WIDTH_1, 48 }, 303 { IMX335_REG_AREA3_WIDTH_1, 3936 }, 304 { IMX335_REG_OPB_SIZE_V, 0 }, 305 { IMX335_REG_XVS_XHS_DRV, 0x00 }, 306 { CCI_REG8(0x3300), 1 }, /* TCYCLE */ 307 { CCI_REG8(0x3199), 0x30 }, /* HADD/VADD */ 308 }; 309 310 static const struct cci_reg_sequence imx335_common_regs[] = { 311 { CCI_REG8(0x3288), 0x21 }, 312 { CCI_REG8(0x328a), 0x02 }, 313 { CCI_REG8(0x3414), 0x05 }, 314 { CCI_REG8(0x3416), 0x18 }, 315 { CCI_REG8(0x3648), 0x01 }, 316 { CCI_REG8(0x364a), 0x04 }, 317 { CCI_REG8(0x364c), 0x04 }, 318 { CCI_REG8(0x3678), 0x01 }, 319 { CCI_REG8(0x367c), 0x31 }, 320 { CCI_REG8(0x367e), 0x31 }, 321 { CCI_REG8(0x3706), 0x10 }, 322 { CCI_REG8(0x3708), 0x03 }, 323 { CCI_REG8(0x3714), 0x02 }, 324 { CCI_REG8(0x3715), 0x02 }, 325 { CCI_REG8(0x3716), 0x01 }, 326 { CCI_REG8(0x3717), 0x03 }, 327 { CCI_REG8(0x371c), 0x3d }, 328 { CCI_REG8(0x371d), 0x3f }, 329 { CCI_REG8(0x372c), 0x00 }, 330 { CCI_REG8(0x372d), 0x00 }, 331 { CCI_REG8(0x372e), 0x46 }, 332 { CCI_REG8(0x372f), 0x00 }, 333 { CCI_REG8(0x3730), 0x89 }, 334 { CCI_REG8(0x3731), 0x00 }, 335 { CCI_REG8(0x3732), 0x08 }, 336 { CCI_REG8(0x3733), 0x01 }, 337 { CCI_REG8(0x3734), 0xfe }, 338 { CCI_REG8(0x3735), 0x05 }, 339 { CCI_REG8(0x3740), 0x02 }, 340 { CCI_REG8(0x375d), 0x00 }, 341 { CCI_REG8(0x375e), 0x00 }, 342 { CCI_REG8(0x375f), 0x11 }, 343 { CCI_REG8(0x3760), 0x01 }, 344 { CCI_REG8(0x3768), 0x1b }, 345 { CCI_REG8(0x3769), 0x1b }, 346 { CCI_REG8(0x376a), 0x1b }, 347 { CCI_REG8(0x376b), 0x1b }, 348 { CCI_REG8(0x376c), 0x1a }, 349 { CCI_REG8(0x376d), 0x17 }, 350 { CCI_REG8(0x376e), 0x0f }, 351 { CCI_REG8(0x3776), 0x00 }, 352 { CCI_REG8(0x3777), 0x00 }, 353 { CCI_REG8(0x3778), 0x46 }, 354 { CCI_REG8(0x3779), 0x00 }, 355 { CCI_REG8(0x377a), 0x89 }, 356 { CCI_REG8(0x377b), 0x00 }, 357 { CCI_REG8(0x377c), 0x08 }, 358 { CCI_REG8(0x377d), 0x01 }, 359 { CCI_REG8(0x377e), 0x23 }, 360 { CCI_REG8(0x377f), 0x02 }, 361 { CCI_REG8(0x3780), 0xd9 }, 362 { CCI_REG8(0x3781), 0x03 }, 363 { CCI_REG8(0x3782), 0xf5 }, 364 { CCI_REG8(0x3783), 0x06 }, 365 { CCI_REG8(0x3784), 0xa5 }, 366 { CCI_REG8(0x3788), 0x0f }, 367 { CCI_REG8(0x378a), 0xd9 }, 368 { CCI_REG8(0x378b), 0x03 }, 369 { CCI_REG8(0x378c), 0xeb }, 370 { CCI_REG8(0x378d), 0x05 }, 371 { CCI_REG8(0x378e), 0x87 }, 372 { CCI_REG8(0x378f), 0x06 }, 373 { CCI_REG8(0x3790), 0xf5 }, 374 { CCI_REG8(0x3792), 0x43 }, 375 { CCI_REG8(0x3794), 0x7a }, 376 { CCI_REG8(0x3796), 0xa1 }, 377 { CCI_REG8(0x37b0), 0x36 }, 378 { CCI_REG8(0x3a00), 0x00 }, 379 }; 380 381 static const struct cci_reg_sequence mode_2592x1944_vflip_normal[] = { 382 { IMX335_REG_AREA3_ST_ADR_1, 176 }, 383 384 /* Undocumented V-Flip related registers on Page 55 of datasheet. */ 385 { CCI_REG8(0x3081), 0x02, }, 386 { CCI_REG8(0x3083), 0x02, }, 387 { CCI_REG16_LE(0x30b6), 0x00 }, 388 { CCI_REG16_LE(0x3116), 0x08 }, 389 }; 390 391 static const struct cci_reg_sequence mode_2592x1944_vflip_inverted[] = { 392 { IMX335_REG_AREA3_ST_ADR_1, 4112 }, 393 394 /* Undocumented V-Flip related registers on Page 55 of datasheet. */ 395 { CCI_REG8(0x3081), 0xfe, }, 396 { CCI_REG8(0x3083), 0xfe, }, 397 { CCI_REG16_LE(0x30b6), 0x1fa }, 398 { CCI_REG16_LE(0x3116), 0x002 }, 399 }; 400 401 static const struct cci_reg_sequence mode_1312x972_vflip_normal[] = { 402 { IMX335_REG_AREA3_ST_ADR_1, 176 }, 403 404 /* Undocumented */ 405 { CCI_REG8(0x3078), 0x04 }, 406 { CCI_REG8(0x3079), 0xfd }, 407 { CCI_REG8(0x307a), 0x04 }, 408 { CCI_REG8(0x307b), 0xfe }, 409 { CCI_REG8(0x307c), 0x04 }, 410 { CCI_REG8(0x307d), 0xfb }, 411 { CCI_REG8(0x307e), 0x04 }, 412 { CCI_REG8(0x307f), 0x02 }, 413 { CCI_REG8(0x3080), 0x04 }, 414 { CCI_REG8(0x3081), 0xfd }, 415 { CCI_REG8(0x3082), 0x04 }, 416 { CCI_REG8(0x3083), 0xfe }, 417 { CCI_REG8(0x3084), 0x04 }, 418 { CCI_REG8(0x3085), 0xfb }, 419 { CCI_REG8(0x3086), 0x04 }, 420 { CCI_REG8(0x3087), 0x02 }, 421 { CCI_REG8(0x30a4), 0x77 }, 422 { CCI_REG8(0x30a8), 0x20 }, 423 { CCI_REG8(0x30a9), 0x00 }, 424 { CCI_REG8(0x30ac), 0x08 }, 425 { CCI_REG8(0x30ad), 0x08 }, 426 { CCI_REG8(0x30b0), 0x20 }, 427 { CCI_REG8(0x30b1), 0x00 }, 428 { CCI_REG8(0x30b4), 0x10 }, 429 { CCI_REG8(0x30b5), 0x10 }, 430 { CCI_REG16_LE(0x30b6), 0x00 }, 431 { CCI_REG16_LE(0x3112), 0x10 }, 432 { CCI_REG16_LE(0x3116), 0x10 }, 433 }; 434 435 static const struct cci_reg_sequence mode_1312x972_vflip_inverted[] = { 436 { IMX335_REG_AREA3_ST_ADR_1, 4112 }, 437 438 /* Undocumented */ 439 { CCI_REG8(0x3078), 0x04 }, 440 { CCI_REG8(0x3079), 0xfd }, 441 { CCI_REG8(0x307a), 0x04 }, 442 { CCI_REG8(0x307b), 0xfe }, 443 { CCI_REG8(0x307c), 0x04 }, 444 { CCI_REG8(0x307d), 0xfb }, 445 { CCI_REG8(0x307e), 0x04 }, 446 { CCI_REG8(0x307f), 0x02 }, 447 { CCI_REG8(0x3080), 0xfc }, 448 { CCI_REG8(0x3081), 0x05 }, 449 { CCI_REG8(0x3082), 0xfc }, 450 { CCI_REG8(0x3083), 0x02 }, 451 { CCI_REG8(0x3084), 0xfc }, 452 { CCI_REG8(0x3085), 0x03 }, 453 { CCI_REG8(0x3086), 0xfc }, 454 { CCI_REG8(0x3087), 0xfe }, 455 { CCI_REG8(0x30a4), 0x77 }, 456 { CCI_REG8(0x30a8), 0x20 }, 457 { CCI_REG8(0x30a9), 0x00 }, 458 { CCI_REG8(0x30ac), 0x08 }, 459 { CCI_REG8(0x30ad), 0x78 }, 460 { CCI_REG8(0x30b0), 0x20 }, 461 { CCI_REG8(0x30b1), 0x00 }, 462 { CCI_REG8(0x30b4), 0x10 }, 463 { CCI_REG8(0x30b5), 0x70 }, 464 { CCI_REG16_LE(0x30b6), 0x01f2 }, 465 { CCI_REG16_LE(0x3112), 0x10 }, 466 { CCI_REG16_LE(0x3116), 0x02 }, 467 }; 468 469 static const struct cci_reg_sequence mipi_data_rate_1188Mbps[] = { 470 { IMX335_REG_BCWAIT_TIME, 0x3b }, 471 { IMX335_REG_CPWAIT_TIME, 0x2a }, 472 { IMX335_REG_INCLKSEL1, 0x00c6 }, 473 { IMX335_REG_INCLKSEL2, 0x02 }, 474 { IMX335_REG_INCLKSEL3, 0xa0 }, 475 { IMX335_REG_INCLKSEL4, 0x7e }, 476 { IMX335_REG_SYSMODE, 0x01 }, 477 { IMX335_REG_TCLKPOST, 0x8f }, 478 { IMX335_REG_TCLKPREPARE, 0x4f }, 479 { IMX335_REG_TCLK_TRAIL, 0x47 }, 480 { IMX335_REG_TCLK_ZERO, 0x0137 }, 481 { IMX335_REG_THS_PREPARE, 0x4f }, 482 { IMX335_REG_THS_ZERO, 0x87 }, 483 { IMX335_REG_THS_TRAIL, 0x4f }, 484 { IMX335_REG_THS_EXIT, 0x7f }, 485 { IMX335_REG_TPLX, 0x3f }, 486 }; 487 488 static const struct cci_reg_sequence mipi_data_rate_891Mbps[] = { 489 { IMX335_REG_BCWAIT_TIME, 0x3b }, 490 { IMX335_REG_CPWAIT_TIME, 0x2a }, 491 { IMX335_REG_INCLKSEL1, 0x0129 }, 492 { IMX335_REG_INCLKSEL2, 0x06 }, 493 { IMX335_REG_INCLKSEL3, 0xa0 }, 494 { IMX335_REG_INCLKSEL4, 0x7e }, 495 { IMX335_REG_SYSMODE, 0x02 }, 496 { IMX335_REG_TCLKPOST, 0x7f }, 497 { IMX335_REG_TCLKPREPARE, 0x37 }, 498 { IMX335_REG_TCLK_TRAIL, 0x37 }, 499 { IMX335_REG_TCLK_ZERO, 0xf7 }, 500 { IMX335_REG_THS_PREPARE, 0x3f }, 501 { IMX335_REG_THS_ZERO, 0x6f }, 502 { IMX335_REG_THS_TRAIL, 0x3f }, 503 { IMX335_REG_THS_EXIT, 0x5f }, 504 { IMX335_REG_TPLX, 0x2f }, 505 }; 506 507 static const s64 link_freq[] = { 508 /* Corresponds to 1188Mbps data lane rate */ 509 IMX335_LINK_FREQ_594MHz, 510 /* Corresponds to 891Mbps data lane rate */ 511 IMX335_LINK_FREQ_445MHz, 512 }; 513 514 static const struct imx335_reg_list link_freq_reglist[] = { 515 { 516 .num_of_regs = ARRAY_SIZE(mipi_data_rate_1188Mbps), 517 .regs = mipi_data_rate_1188Mbps, 518 }, 519 { 520 .num_of_regs = ARRAY_SIZE(mipi_data_rate_891Mbps), 521 .regs = mipi_data_rate_891Mbps, 522 }, 523 }; 524 525 static const u32 imx335_mbus_codes[] = { 526 MEDIA_BUS_FMT_SRGGB12_1X12, 527 MEDIA_BUS_FMT_SRGGB10_1X10, 528 }; 529 530 /* Supported sensor mode configurations */ 531 static const struct imx335_mode supported_modes[] = { 532 { 533 .scan_mode = IMX335_ALL_PIXEL, 534 .width = 2592, 535 .height = 1944, 536 .hblank = 342, 537 .vblank = 2556, 538 .vblank_min = 2556, 539 .vblank_max = 133060, 540 .pclk = 396000000, 541 .reg_list = { 542 .num_of_regs = ARRAY_SIZE(mode_2592x1944_regs), 543 .regs = mode_2592x1944_regs, 544 }, 545 .vflip_normal = { 546 .num_of_regs = ARRAY_SIZE(mode_2592x1944_vflip_normal), 547 .regs = mode_2592x1944_vflip_normal, 548 }, 549 .vflip_inverted = { 550 .num_of_regs = ARRAY_SIZE(mode_2592x1944_vflip_inverted), 551 .regs = mode_2592x1944_vflip_inverted, 552 } 553 }, { 554 .scan_mode = IMX335_2_2_BINNING, 555 .width = 1312, 556 .height = 972, 557 .hblank = 155, 558 .vblank = 3528, 559 .vblank_min = 3528, 560 .vblank_max = 133060, 561 .pclk = 396000000, 562 .reg_list = { 563 .num_of_regs = ARRAY_SIZE(mode_1312x972_regs), 564 .regs = mode_1312x972_regs, 565 }, 566 .vflip_normal = { 567 .num_of_regs = ARRAY_SIZE(mode_1312x972_vflip_normal), 568 .regs = mode_1312x972_vflip_normal, 569 }, 570 .vflip_inverted = { 571 .num_of_regs = ARRAY_SIZE(mode_1312x972_vflip_inverted), 572 .regs = mode_1312x972_vflip_inverted, 573 }, 574 }, 575 }; 576 577 /** 578 * to_imx335() - imx335 V4L2 sub-device to imx335 device. 579 * @subdev: pointer to imx335 V4L2 sub-device 580 * 581 * Return: pointer to imx335 device 582 */ 583 static inline struct imx335 *to_imx335(struct v4l2_subdev *subdev) 584 { 585 return container_of(subdev, struct imx335, sd); 586 } 587 588 /** 589 * imx335_update_controls() - Update control ranges based on streaming mode 590 * @imx335: pointer to imx335 device 591 * @mode: pointer to imx335_mode sensor mode 592 * 593 * Return: 0 if successful, error code otherwise. 594 */ 595 static int imx335_update_controls(struct imx335 *imx335, 596 const struct imx335_mode *mode) 597 { 598 int ret; 599 600 ret = __v4l2_ctrl_s_ctrl(imx335->link_freq_ctrl, 601 __ffs(imx335->link_freq_bitmap)); 602 if (ret) 603 return ret; 604 605 ret = __v4l2_ctrl_modify_range(imx335->hblank_ctrl, mode->hblank, 606 mode->hblank, 1, mode->hblank); 607 if (ret) 608 return ret; 609 610 return __v4l2_ctrl_modify_range(imx335->vblank_ctrl, mode->vblank_min, 611 mode->vblank_max, 1, mode->vblank); 612 } 613 614 /** 615 * imx335_update_exp_gain() - Set updated exposure and gain 616 * @imx335: pointer to imx335 device 617 * @exposure: updated exposure value 618 * @gain: updated analog gain value 619 * 620 * Return: 0 if successful, error code otherwise. 621 */ 622 static int imx335_update_exp_gain(struct imx335 *imx335, u32 exposure, u32 gain) 623 { 624 u32 lpfr, shutter; 625 int ret_hold; 626 int ret = 0; 627 628 lpfr = imx335->vblank + imx335->cur_mode->height; 629 shutter = lpfr - exposure; 630 631 dev_dbg(imx335->dev, "Set exp %u, analog gain %u, shutter %u, lpfr %u\n", 632 exposure, gain, shutter, lpfr); 633 634 cci_write(imx335->cci, IMX335_REG_HOLD, 1, &ret); 635 cci_write(imx335->cci, IMX335_REG_VMAX, lpfr, &ret); 636 cci_write(imx335->cci, IMX335_REG_SHUTTER, shutter, &ret); 637 cci_write(imx335->cci, IMX335_REG_GAIN, gain, &ret); 638 /* 639 * Unconditionally attempt to release the hold, but track the 640 * error if the unhold itself fails. 641 */ 642 ret_hold = cci_write(imx335->cci, IMX335_REG_HOLD, 0, NULL); 643 if (ret_hold) 644 ret = ret_hold; 645 646 return ret; 647 } 648 649 static int imx335_update_vertical_flip(struct imx335 *imx335, u32 vflip) 650 { 651 const struct imx335_reg_list * const vflip_regs = 652 vflip ? &imx335->cur_mode->vflip_inverted : 653 &imx335->cur_mode->vflip_normal; 654 int ret = 0; 655 656 cci_multi_reg_write(imx335->cci, vflip_regs->regs, 657 vflip_regs->num_of_regs, &ret); 658 659 return cci_write(imx335->cci, IMX335_REG_VREVERSE, vflip, &ret); 660 } 661 662 static int imx335_update_test_pattern(struct imx335 *imx335, u32 pattern_index) 663 { 664 int ret = 0; 665 666 if (pattern_index >= ARRAY_SIZE(imx335_tpg_val)) 667 return -EINVAL; 668 669 if (pattern_index) { 670 const struct cci_reg_sequence tpg_enable_regs[] = { 671 { IMX335_REG_TPG_TESTCLKEN, 0x10 }, 672 { IMX335_REG_TPG_DIG_CLP_MODE, 0x00 }, 673 { IMX335_REG_TPG_EN_DUOUT, 0x01 }, 674 { IMX335_REG_TPG_COLORWIDTH, 0x11 }, 675 { IMX335_REG_BLKLEVEL, 0x00 }, 676 { IMX335_REG_WRJ_OPEN, 0x00 }, 677 }; 678 679 cci_write(imx335->cci, IMX335_REG_TPG, 680 imx335_tpg_val[pattern_index], &ret); 681 682 cci_multi_reg_write(imx335->cci, tpg_enable_regs, 683 ARRAY_SIZE(tpg_enable_regs), &ret); 684 } else { 685 const struct cci_reg_sequence tpg_disable_regs[] = { 686 { IMX335_REG_TPG_TESTCLKEN, 0x00 }, 687 { IMX335_REG_TPG_DIG_CLP_MODE, 0x01 }, 688 { IMX335_REG_TPG_EN_DUOUT, 0x00 }, 689 { IMX335_REG_TPG_COLORWIDTH, 0x10 }, 690 { IMX335_REG_BLKLEVEL, 0x32 }, 691 { IMX335_REG_WRJ_OPEN, 0x01 }, 692 }; 693 694 cci_multi_reg_write(imx335->cci, tpg_disable_regs, 695 ARRAY_SIZE(tpg_disable_regs), &ret); 696 } 697 698 return ret; 699 } 700 701 /** 702 * imx335_set_ctrl() - Set subdevice control 703 * @ctrl: pointer to v4l2_ctrl structure 704 * 705 * Supported controls: 706 * - V4L2_CID_VBLANK 707 * - cluster controls: 708 * - V4L2_CID_ANALOGUE_GAIN 709 * - V4L2_CID_EXPOSURE 710 * 711 * Return: 0 if successful, error code otherwise. 712 */ 713 static int imx335_set_ctrl(struct v4l2_ctrl *ctrl) 714 { 715 struct imx335 *imx335 = 716 container_of(ctrl->handler, struct imx335, ctrl_handler); 717 u32 analog_gain; 718 u32 exposure; 719 int ret; 720 721 /* Propagate change of current control to all related controls */ 722 if (ctrl->id == V4L2_CID_VBLANK) { 723 u32 shutter_min = IMX335_SHUTTER_MIN; 724 u32 lpfr; 725 726 imx335->vblank = imx335->vblank_ctrl->val; 727 lpfr = imx335->vblank + imx335->cur_mode->height; 728 729 dev_dbg(imx335->dev, "Received vblank %u, new lpfr %u\n", 730 imx335->vblank, lpfr); 731 732 if (imx335->cur_mode->scan_mode == IMX335_2_2_BINNING) 733 shutter_min = IMX335_SHUTTER_MIN_BINNED; 734 735 ret = __v4l2_ctrl_modify_range(imx335->exp_ctrl, 736 IMX335_EXPOSURE_MIN, 737 lpfr - shutter_min, 1, 738 IMX335_EXPOSURE_DEFAULT); 739 if (ret) 740 return ret; 741 } 742 743 /* 744 * Applying V4L2 control value only happens 745 * when power is up for streaming. 746 */ 747 if (pm_runtime_get_if_in_use(imx335->dev) == 0) 748 return 0; 749 750 switch (ctrl->id) { 751 case V4L2_CID_VBLANK: 752 exposure = imx335->exp_ctrl->val; 753 analog_gain = imx335->again_ctrl->val; 754 755 ret = imx335_update_exp_gain(imx335, exposure, analog_gain); 756 757 break; 758 case V4L2_CID_EXPOSURE: 759 exposure = ctrl->val; 760 analog_gain = imx335->again_ctrl->val; 761 762 dev_dbg(imx335->dev, "Received exp %u, analog gain %u\n", 763 exposure, analog_gain); 764 765 ret = imx335_update_exp_gain(imx335, exposure, analog_gain); 766 767 break; 768 case V4L2_CID_VFLIP: 769 ret = imx335_update_vertical_flip(imx335, ctrl->val); 770 771 break; 772 case V4L2_CID_TEST_PATTERN: 773 ret = imx335_update_test_pattern(imx335, ctrl->val); 774 775 break; 776 default: 777 dev_err(imx335->dev, "Invalid control %d\n", ctrl->id); 778 ret = -EINVAL; 779 } 780 781 pm_runtime_put(imx335->dev); 782 783 return ret; 784 } 785 786 /* V4l2 subdevice control ops*/ 787 static const struct v4l2_ctrl_ops imx335_ctrl_ops = { 788 .s_ctrl = imx335_set_ctrl, 789 }; 790 791 static int imx335_get_format_code(struct imx335 *imx335, u32 code) 792 { 793 unsigned int i; 794 795 for (i = 0; i < ARRAY_SIZE(imx335_mbus_codes); i++) { 796 if (imx335_mbus_codes[i] == code) 797 return imx335_mbus_codes[i]; 798 } 799 800 return imx335_mbus_codes[0]; 801 } 802 803 /** 804 * imx335_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes 805 * @sd: pointer to imx335 V4L2 sub-device structure 806 * @sd_state: V4L2 sub-device configuration 807 * @code: V4L2 sub-device code enumeration need to be filled 808 * 809 * Return: 0 if successful, error code otherwise. 810 */ 811 static int imx335_enum_mbus_code(struct v4l2_subdev *sd, 812 struct v4l2_subdev_state *sd_state, 813 struct v4l2_subdev_mbus_code_enum *code) 814 { 815 if (code->index >= ARRAY_SIZE(imx335_mbus_codes)) 816 return -EINVAL; 817 818 code->code = imx335_mbus_codes[code->index]; 819 820 return 0; 821 } 822 823 /** 824 * imx335_enum_frame_size() - Enumerate V4L2 sub-device frame sizes 825 * @sd: pointer to imx335 V4L2 sub-device structure 826 * @sd_state: V4L2 sub-device configuration 827 * @fsize: V4L2 sub-device size enumeration need to be filled 828 * 829 * Return: 0 if successful, error code otherwise. 830 */ 831 static int imx335_enum_frame_size(struct v4l2_subdev *sd, 832 struct v4l2_subdev_state *sd_state, 833 struct v4l2_subdev_frame_size_enum *fsize) 834 { 835 struct imx335 *imx335 = to_imx335(sd); 836 u32 code; 837 838 if (fsize->index >= ARRAY_SIZE(supported_modes)) 839 return -EINVAL; 840 841 code = imx335_get_format_code(imx335, fsize->code); 842 if (fsize->code != code) 843 return -EINVAL; 844 845 fsize->min_width = supported_modes[fsize->index].width; 846 fsize->max_width = fsize->min_width; 847 fsize->min_height = supported_modes[fsize->index].height; 848 fsize->max_height = fsize->min_height; 849 850 return 0; 851 } 852 853 /** 854 * imx335_fill_pad_format() - Fill subdevice pad format 855 * from selected sensor mode 856 * @imx335: pointer to imx335 device 857 * @mode: pointer to imx335_mode sensor mode 858 * @fmt: V4L2 sub-device format need to be filled 859 */ 860 static void imx335_fill_pad_format(struct imx335 *imx335, 861 const struct imx335_mode *mode, 862 struct v4l2_subdev_format *fmt) 863 { 864 fmt->format.width = mode->width; 865 fmt->format.height = mode->height; 866 fmt->format.code = imx335->cur_mbus_code; 867 fmt->format.field = V4L2_FIELD_NONE; 868 fmt->format.colorspace = V4L2_COLORSPACE_RAW; 869 fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; 870 fmt->format.quantization = V4L2_QUANTIZATION_DEFAULT; 871 fmt->format.xfer_func = V4L2_XFER_FUNC_NONE; 872 } 873 874 /** 875 * imx335_set_pad_format() - Set subdevice pad format 876 * @sd: pointer to imx335 V4L2 sub-device structure 877 * @sd_state: V4L2 sub-device configuration 878 * @fmt: V4L2 sub-device format need to be set 879 * 880 * Return: 0 if successful, error code otherwise. 881 */ 882 static int imx335_set_pad_format(struct v4l2_subdev *sd, 883 struct v4l2_subdev_state *sd_state, 884 struct v4l2_subdev_format *fmt) 885 { 886 struct imx335 *imx335 = to_imx335(sd); 887 struct v4l2_mbus_framefmt *format; 888 const struct imx335_mode *mode; 889 struct v4l2_rect *crop; 890 int i, ret = 0; 891 892 mode = v4l2_find_nearest_size(supported_modes, 893 ARRAY_SIZE(supported_modes), 894 width, height, 895 fmt->format.width, fmt->format.height); 896 897 for (i = 0; i < ARRAY_SIZE(imx335_mbus_codes); i++) { 898 if (imx335_mbus_codes[i] == fmt->format.code) 899 imx335->cur_mbus_code = imx335_mbus_codes[i]; 900 } 901 902 imx335_fill_pad_format(imx335, mode, fmt); 903 904 format = v4l2_subdev_state_get_format(sd_state, fmt->pad); 905 *format = fmt->format; 906 907 crop = v4l2_subdev_state_get_crop(sd_state, fmt->pad); 908 crop->width = fmt->format.width; 909 crop->height = fmt->format.height; 910 if (mode->scan_mode == IMX335_2_2_BINNING) { 911 crop->width *= 2; 912 crop->height *= 2; 913 } 914 crop->left = (imx335_native_area.width - crop->width) / 2; 915 crop->top = (imx335_native_area.height - crop->height) / 2; 916 917 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { 918 ret = imx335_update_controls(imx335, mode); 919 if (!ret) 920 imx335->cur_mode = mode; 921 } 922 923 return ret; 924 } 925 926 /** 927 * imx335_init_state() - Initialize sub-device state 928 * @sd: pointer to imx335 V4L2 sub-device structure 929 * @sd_state: V4L2 sub-device configuration 930 * 931 * Return: 0 if successful, error code otherwise. 932 */ 933 static int imx335_init_state(struct v4l2_subdev *sd, 934 struct v4l2_subdev_state *sd_state) 935 { 936 struct imx335 *imx335 = to_imx335(sd); 937 struct v4l2_subdev_format fmt = { 0 }; 938 939 fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; 940 imx335_fill_pad_format(imx335, &supported_modes[0], &fmt); 941 942 __v4l2_ctrl_modify_range(imx335->link_freq_ctrl, 0, 943 __fls(imx335->link_freq_bitmap), 944 ~(imx335->link_freq_bitmap), 945 __ffs(imx335->link_freq_bitmap)); 946 947 return imx335_set_pad_format(sd, sd_state, &fmt); 948 } 949 950 /** 951 * imx335_get_selection() - Selection API 952 * @sd: pointer to imx335 V4L2 sub-device structure 953 * @sd_state: V4L2 sub-device configuration 954 * @sel: V4L2 selection info 955 * 956 * Return: 0 if successful, error code otherwise. 957 */ 958 static int imx335_get_selection(struct v4l2_subdev *sd, 959 struct v4l2_subdev_state *sd_state, 960 struct v4l2_subdev_selection *sel) 961 { 962 switch (sel->target) { 963 case V4L2_SEL_TGT_CROP: 964 sel->r = *v4l2_subdev_state_get_crop(sd_state, 0); 965 966 return 0; 967 968 case V4L2_SEL_TGT_NATIVE_SIZE: 969 sel->r = imx335_native_area; 970 return 0; 971 972 case V4L2_SEL_TGT_CROP_DEFAULT: 973 case V4L2_SEL_TGT_CROP_BOUNDS: 974 sel->r = imx335_active_area; 975 return 0; 976 } 977 978 return -EINVAL; 979 } 980 981 static int imx335_set_framefmt(struct imx335 *imx335) 982 { 983 /* 984 * In the all-pixel scan mode the AD conversion shall match the output 985 * bit width requested. 986 * 987 * However, when 2/2 binning is enabled, the AD conversion is always 988 * 10-bit, so we ensure ADBIT is clear and ADBIT1 is assigned 0x1ff. 989 * That's as much as the documentation gives us... 990 */ 991 int ret = 0; 992 u8 bpp = imx335->cur_mbus_code == MEDIA_BUS_FMT_SRGGB10_1X10 ? 10 : 12; 993 u8 ad_conv = bpp; 994 995 /* Start with the output mode */ 996 cci_write(imx335->cci, IMX335_REG_MDBIT, bpp == 12, &ret); 997 998 /* Enforce 10 bit AD on binning modes */ 999 if (imx335->cur_mode->scan_mode == IMX335_2_2_BINNING) 1000 ad_conv = 10; 1001 1002 /* AD Conversion configuration */ 1003 if (ad_conv == 10) { 1004 cci_write(imx335->cci, IMX335_REG_ADBIT, 0x00, &ret); 1005 cci_write(imx335->cci, IMX335_REG_ADBIT1, 0x1ff, &ret); 1006 } else { /* 12 bit AD Conversion */ 1007 cci_write(imx335->cci, IMX335_REG_ADBIT, 0x01, &ret); 1008 cci_write(imx335->cci, IMX335_REG_ADBIT1, 0x47, &ret); 1009 } 1010 1011 return ret; 1012 } 1013 1014 /** 1015 * imx335_enable_streams() - Enable sensor streams 1016 * @sd: V4L2 subdevice 1017 * @state: V4L2 subdevice state 1018 * @pad: The pad to enable 1019 * @streams_mask: Bitmask of streams to enable 1020 * 1021 * Return: 0 if successful, error code otherwise. 1022 */ 1023 static int imx335_enable_streams(struct v4l2_subdev *sd, 1024 struct v4l2_subdev_state *state, u32 pad, 1025 u64 streams_mask) 1026 { 1027 struct imx335 *imx335 = to_imx335(sd); 1028 const struct imx335_reg_list *reg_list; 1029 int ret; 1030 1031 ret = pm_runtime_resume_and_get(imx335->dev); 1032 if (ret < 0) 1033 return ret; 1034 1035 /* Setup PLL */ 1036 reg_list = &link_freq_reglist[__ffs(imx335->link_freq_bitmap)]; 1037 ret = cci_multi_reg_write(imx335->cci, reg_list->regs, 1038 reg_list->num_of_regs, NULL); 1039 if (ret) { 1040 dev_err(imx335->dev, "%s failed to set plls\n", __func__); 1041 goto err_rpm_put; 1042 } 1043 1044 /* Write sensor mode registers */ 1045 reg_list = &imx335->cur_mode->reg_list; 1046 ret = cci_multi_reg_write(imx335->cci, reg_list->regs, 1047 reg_list->num_of_regs, NULL); 1048 if (ret) { 1049 dev_err(imx335->dev, "fail to write initial registers\n"); 1050 goto err_rpm_put; 1051 } 1052 1053 /* Write sensor common registers */ 1054 ret = cci_multi_reg_write(imx335->cci, imx335_common_regs, 1055 ARRAY_SIZE(imx335_common_regs), NULL); 1056 if (ret) { 1057 dev_err(imx335->dev, "fail to write initial registers\n"); 1058 goto err_rpm_put; 1059 } 1060 1061 ret = imx335_set_framefmt(imx335); 1062 if (ret) { 1063 dev_err(imx335->dev, "%s failed to set frame format: %d\n", 1064 __func__, ret); 1065 goto err_rpm_put; 1066 } 1067 1068 /* Configure lanes */ 1069 ret = cci_write(imx335->cci, IMX335_REG_LANEMODE, 1070 imx335->lane_mode, NULL); 1071 if (ret) 1072 goto err_rpm_put; 1073 1074 /* Setup handler will write actual exposure and gain */ 1075 ret = __v4l2_ctrl_handler_setup(imx335->sd.ctrl_handler); 1076 if (ret) { 1077 dev_err(imx335->dev, "fail to setup handler\n"); 1078 goto err_rpm_put; 1079 } 1080 1081 /* Start streaming */ 1082 ret = cci_write(imx335->cci, IMX335_REG_MODE_SELECT, 1083 IMX335_MODE_STREAMING, NULL); 1084 if (ret) { 1085 dev_err(imx335->dev, "fail to start streaming\n"); 1086 goto err_rpm_put; 1087 } 1088 1089 /* Initial regulator stabilization period */ 1090 usleep_range(18000, 20000); 1091 1092 return 0; 1093 1094 err_rpm_put: 1095 pm_runtime_put(imx335->dev); 1096 1097 return ret; 1098 } 1099 1100 /** 1101 * imx335_disable_streams() - Disable sensor streams 1102 * @sd: V4L2 subdevice 1103 * @state: V4L2 subdevice state 1104 * @pad: The pad to disable 1105 * @streams_mask: Bitmask of streams to disable 1106 * 1107 * Return: 0 if successful, error code otherwise. 1108 */ 1109 static int imx335_disable_streams(struct v4l2_subdev *sd, 1110 struct v4l2_subdev_state *state, u32 pad, 1111 u64 streams_mask) 1112 { 1113 struct imx335 *imx335 = to_imx335(sd); 1114 int ret; 1115 1116 ret = cci_write(imx335->cci, IMX335_REG_MODE_SELECT, 1117 IMX335_MODE_STANDBY, NULL); 1118 pm_runtime_put(imx335->dev); 1119 1120 return ret; 1121 } 1122 1123 /** 1124 * imx335_detect() - Detect imx335 sensor 1125 * @imx335: pointer to imx335 device 1126 * 1127 * Return: 0 if successful, -EIO if sensor id does not match 1128 */ 1129 static int imx335_detect(struct imx335 *imx335) 1130 { 1131 int ret; 1132 u64 val; 1133 1134 ret = cci_read(imx335->cci, IMX335_REG_ID, &val, NULL); 1135 if (ret) 1136 return ret; 1137 1138 if (val != IMX335_ID) { 1139 dev_err(imx335->dev, "chip id mismatch: %x!=%llx\n", 1140 IMX335_ID, val); 1141 return -ENXIO; 1142 } 1143 1144 return 0; 1145 } 1146 1147 /** 1148 * imx335_parse_hw_config() - Parse HW configuration and check if supported 1149 * @imx335: pointer to imx335 device 1150 * 1151 * Return: 0 if successful, error code otherwise. 1152 */ 1153 static int imx335_parse_hw_config(struct imx335 *imx335) 1154 { 1155 struct fwnode_handle *fwnode = dev_fwnode(imx335->dev); 1156 struct v4l2_fwnode_endpoint bus_cfg = { 1157 .bus_type = V4L2_MBUS_CSI2_DPHY 1158 }; 1159 struct fwnode_handle *ep; 1160 unsigned long rate; 1161 unsigned int i; 1162 int ret; 1163 1164 if (!fwnode) 1165 return -ENXIO; 1166 1167 /* Request optional reset pin */ 1168 imx335->reset_gpio = devm_gpiod_get_optional(imx335->dev, "reset", 1169 GPIOD_OUT_HIGH); 1170 if (IS_ERR(imx335->reset_gpio)) { 1171 dev_err(imx335->dev, "failed to get reset gpio %pe\n", 1172 imx335->reset_gpio); 1173 return PTR_ERR(imx335->reset_gpio); 1174 } 1175 1176 for (i = 0; i < ARRAY_SIZE(imx335_supply_name); i++) 1177 imx335->supplies[i].supply = imx335_supply_name[i]; 1178 1179 ret = devm_regulator_bulk_get(imx335->dev, 1180 ARRAY_SIZE(imx335_supply_name), 1181 imx335->supplies); 1182 if (ret) { 1183 dev_err(imx335->dev, "Failed to get regulators\n"); 1184 return ret; 1185 } 1186 1187 /* Get sensor input clock */ 1188 imx335->inclk = devm_v4l2_sensor_clk_get(imx335->dev, NULL); 1189 if (IS_ERR(imx335->inclk)) 1190 return dev_err_probe(imx335->dev, PTR_ERR(imx335->inclk), 1191 "could not get inclk\n"); 1192 1193 rate = clk_get_rate(imx335->inclk); 1194 if (rate != IMX335_INCLK_RATE) { 1195 dev_err(imx335->dev, "inclk frequency mismatch\n"); 1196 return -EINVAL; 1197 } 1198 1199 ep = fwnode_graph_get_next_endpoint(fwnode, NULL); 1200 if (!ep) { 1201 dev_err(imx335->dev, "Failed to get next endpoint\n"); 1202 return -ENXIO; 1203 } 1204 1205 ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); 1206 fwnode_handle_put(ep); 1207 if (ret) 1208 return ret; 1209 1210 switch (bus_cfg.bus.mipi_csi2.num_data_lanes) { 1211 case 2: 1212 imx335->lane_mode = IMX335_2LANE; 1213 break; 1214 case 4: 1215 imx335->lane_mode = IMX335_4LANE; 1216 break; 1217 default: 1218 dev_err(imx335->dev, 1219 "number of CSI2 data lanes %d is not supported\n", 1220 bus_cfg.bus.mipi_csi2.num_data_lanes); 1221 ret = -EINVAL; 1222 goto done_endpoint_free; 1223 } 1224 1225 ret = v4l2_link_freq_to_bitmap(imx335->dev, bus_cfg.link_frequencies, 1226 bus_cfg.nr_of_link_frequencies, 1227 link_freq, ARRAY_SIZE(link_freq), 1228 &imx335->link_freq_bitmap); 1229 1230 done_endpoint_free: 1231 v4l2_fwnode_endpoint_free(&bus_cfg); 1232 1233 return ret; 1234 } 1235 1236 /* V4l2 subdevice ops */ 1237 static const struct v4l2_subdev_video_ops imx335_video_ops = { 1238 .s_stream = v4l2_subdev_s_stream_helper, 1239 }; 1240 1241 static const struct v4l2_subdev_pad_ops imx335_pad_ops = { 1242 .enum_mbus_code = imx335_enum_mbus_code, 1243 .enum_frame_size = imx335_enum_frame_size, 1244 .get_selection = imx335_get_selection, 1245 .set_selection = imx335_get_selection, 1246 .get_fmt = v4l2_subdev_get_fmt, 1247 .set_fmt = imx335_set_pad_format, 1248 .enable_streams = imx335_enable_streams, 1249 .disable_streams = imx335_disable_streams, 1250 }; 1251 1252 static const struct v4l2_subdev_ops imx335_subdev_ops = { 1253 .video = &imx335_video_ops, 1254 .pad = &imx335_pad_ops, 1255 }; 1256 1257 static const struct v4l2_subdev_internal_ops imx335_internal_ops = { 1258 .init_state = imx335_init_state, 1259 }; 1260 1261 /** 1262 * imx335_power_on() - Sensor power on sequence 1263 * @dev: pointer to i2c device 1264 * 1265 * Return: 0 if successful, error code otherwise. 1266 */ 1267 static int imx335_power_on(struct device *dev) 1268 { 1269 struct v4l2_subdev *sd = dev_get_drvdata(dev); 1270 struct imx335 *imx335 = to_imx335(sd); 1271 int ret; 1272 1273 ret = regulator_bulk_enable(ARRAY_SIZE(imx335_supply_name), 1274 imx335->supplies); 1275 if (ret) { 1276 dev_err(dev, "%s: failed to enable regulators\n", 1277 __func__); 1278 return ret; 1279 } 1280 1281 usleep_range(500, 550); /* Tlow */ 1282 1283 gpiod_set_value_cansleep(imx335->reset_gpio, 0); 1284 1285 ret = clk_prepare_enable(imx335->inclk); 1286 if (ret) { 1287 dev_err(imx335->dev, "fail to enable inclk\n"); 1288 goto error_reset; 1289 } 1290 1291 usleep_range(20, 22); /* T4 */ 1292 1293 return 0; 1294 1295 error_reset: 1296 gpiod_set_value_cansleep(imx335->reset_gpio, 1); 1297 regulator_bulk_disable(ARRAY_SIZE(imx335_supply_name), imx335->supplies); 1298 1299 return ret; 1300 } 1301 1302 /** 1303 * imx335_power_off() - Sensor power off sequence 1304 * @dev: pointer to i2c device 1305 * 1306 * Return: 0 if successful, error code otherwise. 1307 */ 1308 static int imx335_power_off(struct device *dev) 1309 { 1310 struct v4l2_subdev *sd = dev_get_drvdata(dev); 1311 struct imx335 *imx335 = to_imx335(sd); 1312 1313 gpiod_set_value_cansleep(imx335->reset_gpio, 1); 1314 clk_disable_unprepare(imx335->inclk); 1315 regulator_bulk_disable(ARRAY_SIZE(imx335_supply_name), imx335->supplies); 1316 1317 return 0; 1318 } 1319 1320 /** 1321 * imx335_init_controls() - Initialize sensor subdevice controls 1322 * @imx335: pointer to imx335 device 1323 * 1324 * Return: 0 if successful, error code otherwise. 1325 */ 1326 static int imx335_init_controls(struct imx335 *imx335) 1327 { 1328 struct v4l2_ctrl_handler *ctrl_hdlr = &imx335->ctrl_handler; 1329 const struct imx335_mode *mode = imx335->cur_mode; 1330 struct v4l2_fwnode_device_properties props; 1331 u32 lpfr, shutter_min; 1332 int ret; 1333 1334 ret = v4l2_fwnode_device_parse(imx335->dev, &props); 1335 if (ret) 1336 return ret; 1337 1338 /* v4l2_fwnode_device_properties can add two more controls */ 1339 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10); 1340 if (ret) 1341 return ret; 1342 1343 /* Initialize exposure and gain */ 1344 lpfr = mode->vblank + mode->height; 1345 shutter_min = IMX335_SHUTTER_MIN; 1346 if (mode->scan_mode == IMX335_2_2_BINNING) 1347 shutter_min = IMX335_SHUTTER_MIN_BINNED; 1348 imx335->exp_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, 1349 &imx335_ctrl_ops, 1350 V4L2_CID_EXPOSURE, 1351 IMX335_EXPOSURE_MIN, 1352 lpfr - shutter_min, 1353 IMX335_EXPOSURE_STEP, 1354 IMX335_EXPOSURE_DEFAULT); 1355 1356 /* 1357 * The sensor has an analog gain and a digital gain, both controlled 1358 * through a single gain value, expressed in 0.3dB increments. Values 1359 * from 0.0dB (0) to 30.0dB (100) apply analog gain only, higher values 1360 * up to 72.0dB (240) add further digital gain. Limit the range to 1361 * analog gain only, support for digital gain can be added separately 1362 * if needed. 1363 */ 1364 imx335->again_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, 1365 &imx335_ctrl_ops, 1366 V4L2_CID_ANALOGUE_GAIN, 1367 IMX335_AGAIN_MIN, 1368 IMX335_AGAIN_MAX, 1369 IMX335_AGAIN_STEP, 1370 IMX335_AGAIN_DEFAULT); 1371 1372 v4l2_ctrl_cluster(2, &imx335->exp_ctrl); 1373 1374 imx335->vflip = v4l2_ctrl_new_std(ctrl_hdlr, 1375 &imx335_ctrl_ops, 1376 V4L2_CID_VFLIP, 1377 0, 1, 1, 0); 1378 if (imx335->vflip) 1379 imx335->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; 1380 1381 imx335->vblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, 1382 &imx335_ctrl_ops, 1383 V4L2_CID_VBLANK, 1384 mode->vblank_min, 1385 mode->vblank_max, 1386 1, mode->vblank); 1387 1388 v4l2_ctrl_new_std_menu_items(ctrl_hdlr, 1389 &imx335_ctrl_ops, 1390 V4L2_CID_TEST_PATTERN, 1391 ARRAY_SIZE(imx335_tpg_menu) - 1, 1392 0, 0, imx335_tpg_menu); 1393 1394 /* Read only controls */ 1395 imx335->pclk_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, 1396 &imx335_ctrl_ops, 1397 V4L2_CID_PIXEL_RATE, 1398 mode->pclk, mode->pclk, 1399 1, mode->pclk); 1400 1401 imx335->link_freq_ctrl = v4l2_ctrl_new_int_menu(ctrl_hdlr, 1402 &imx335_ctrl_ops, 1403 V4L2_CID_LINK_FREQ, 1404 __fls(imx335->link_freq_bitmap), 1405 __ffs(imx335->link_freq_bitmap), 1406 link_freq); 1407 if (imx335->link_freq_ctrl) 1408 imx335->link_freq_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1409 1410 imx335->hblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr, 1411 &imx335_ctrl_ops, 1412 V4L2_CID_HBLANK, 1413 mode->hblank, 1414 mode->hblank, 1415 1, mode->hblank); 1416 if (imx335->hblank_ctrl) 1417 imx335->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; 1418 1419 v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx335_ctrl_ops, &props); 1420 1421 if (ctrl_hdlr->error) { 1422 dev_err(imx335->dev, "control init failed: %d\n", 1423 ctrl_hdlr->error); 1424 v4l2_ctrl_handler_free(ctrl_hdlr); 1425 return ctrl_hdlr->error; 1426 } 1427 1428 imx335->sd.ctrl_handler = ctrl_hdlr; 1429 1430 return 0; 1431 } 1432 1433 /** 1434 * imx335_probe() - I2C client device binding 1435 * @client: pointer to i2c client device 1436 * 1437 * Return: 0 if successful, error code otherwise. 1438 */ 1439 static int imx335_probe(struct i2c_client *client) 1440 { 1441 struct imx335 *imx335; 1442 int ret; 1443 1444 imx335 = devm_kzalloc(&client->dev, sizeof(*imx335), GFP_KERNEL); 1445 if (!imx335) 1446 return -ENOMEM; 1447 1448 imx335->dev = &client->dev; 1449 imx335->cci = devm_cci_regmap_init_i2c(client, 16); 1450 if (IS_ERR(imx335->cci)) { 1451 dev_err(imx335->dev, "Unable to initialize I2C\n"); 1452 return -ENODEV; 1453 } 1454 1455 /* Initialize subdev */ 1456 v4l2_i2c_subdev_init(&imx335->sd, client, &imx335_subdev_ops); 1457 imx335->sd.internal_ops = &imx335_internal_ops; 1458 1459 ret = imx335_parse_hw_config(imx335); 1460 if (ret) { 1461 dev_err(imx335->dev, "HW configuration is not supported\n"); 1462 return ret; 1463 } 1464 1465 ret = imx335_power_on(imx335->dev); 1466 if (ret) { 1467 dev_err(imx335->dev, "failed to power-on the sensor\n"); 1468 return ret; 1469 } 1470 1471 /* Check module identity */ 1472 ret = imx335_detect(imx335); 1473 if (ret) { 1474 dev_err(imx335->dev, "failed to find sensor: %d\n", ret); 1475 goto error_power_off; 1476 } 1477 1478 /* Set default mode to max resolution */ 1479 imx335->cur_mode = &supported_modes[0]; 1480 imx335->cur_mbus_code = imx335_mbus_codes[0]; 1481 imx335->vblank = imx335->cur_mode->vblank; 1482 1483 ret = imx335_init_controls(imx335); 1484 if (ret) { 1485 dev_err(imx335->dev, "failed to init controls: %d\n", ret); 1486 goto error_power_off; 1487 } 1488 1489 /* Initialize subdev */ 1490 imx335->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1491 imx335->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 1492 1493 /* Initialize source pad */ 1494 imx335->pad.flags = MEDIA_PAD_FL_SOURCE; 1495 ret = media_entity_pads_init(&imx335->sd.entity, 1, &imx335->pad); 1496 if (ret) { 1497 dev_err(imx335->dev, "failed to init entity pads: %d\n", ret); 1498 goto error_handler_free; 1499 } 1500 1501 imx335->sd.state_lock = imx335->ctrl_handler.lock; 1502 ret = v4l2_subdev_init_finalize(&imx335->sd); 1503 if (ret < 0) { 1504 dev_err(imx335->dev, "subdev init error\n"); 1505 goto error_media_entity; 1506 } 1507 1508 ret = v4l2_async_register_subdev_sensor(&imx335->sd); 1509 if (ret < 0) { 1510 dev_err(imx335->dev, 1511 "failed to register async subdev: %d\n", ret); 1512 goto error_subdev_cleanup; 1513 } 1514 1515 pm_runtime_set_active(imx335->dev); 1516 pm_runtime_enable(imx335->dev); 1517 pm_runtime_idle(imx335->dev); 1518 1519 return 0; 1520 1521 error_subdev_cleanup: 1522 v4l2_subdev_cleanup(&imx335->sd); 1523 error_media_entity: 1524 media_entity_cleanup(&imx335->sd.entity); 1525 error_handler_free: 1526 v4l2_ctrl_handler_free(imx335->sd.ctrl_handler); 1527 error_power_off: 1528 imx335_power_off(imx335->dev); 1529 1530 return ret; 1531 } 1532 1533 /** 1534 * imx335_remove() - I2C client device unbinding 1535 * @client: pointer to I2C client device 1536 * 1537 * Return: 0 if successful, error code otherwise. 1538 */ 1539 static void imx335_remove(struct i2c_client *client) 1540 { 1541 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1542 1543 v4l2_async_unregister_subdev(sd); 1544 v4l2_subdev_cleanup(sd); 1545 media_entity_cleanup(&sd->entity); 1546 v4l2_ctrl_handler_free(sd->ctrl_handler); 1547 1548 pm_runtime_disable(&client->dev); 1549 if (!pm_runtime_status_suspended(&client->dev)) 1550 imx335_power_off(&client->dev); 1551 pm_runtime_set_suspended(&client->dev); 1552 } 1553 1554 static const struct dev_pm_ops imx335_pm_ops = { 1555 SET_RUNTIME_PM_OPS(imx335_power_off, imx335_power_on, NULL) 1556 }; 1557 1558 static const struct of_device_id imx335_of_match[] = { 1559 { .compatible = "sony,imx335" }, 1560 { } 1561 }; 1562 1563 MODULE_DEVICE_TABLE(of, imx335_of_match); 1564 1565 static struct i2c_driver imx335_driver = { 1566 .probe = imx335_probe, 1567 .remove = imx335_remove, 1568 .driver = { 1569 .name = "imx335", 1570 .pm = &imx335_pm_ops, 1571 .of_match_table = imx335_of_match, 1572 }, 1573 }; 1574 1575 module_i2c_driver(imx335_driver); 1576 1577 MODULE_DESCRIPTION("Sony imx335 sensor driver"); 1578 MODULE_LICENSE("GPL"); 1579