1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Allied Vision Technologies GmbH Alvium camera driver 4 * 5 * Copyright (C) 2023 Tommaso Merciai 6 * Copyright (C) 2023 Martin Hecht 7 * Copyright (C) 2023 Avnet EMG GmbH 8 */ 9 10 #include <linux/i2c.h> 11 #include <linux/module.h> 12 #include <linux/pm_runtime.h> 13 #include <linux/regmap.h> 14 #include <linux/regulator/consumer.h> 15 #include <media/mipi-csi2.h> 16 #include <media/v4l2-async.h> 17 #include <media/v4l2-ctrls.h> 18 #include <media/v4l2-device.h> 19 #include <media/v4l2-event.h> 20 #include <media/v4l2-fwnode.h> 21 #include <media/v4l2-subdev.h> 22 23 #include "alvium-csi2.h" 24 25 static const struct v4l2_mbus_framefmt alvium_csi2_default_fmt = { 26 .code = MEDIA_BUS_FMT_UYVY8_1X16, 27 .width = 640, 28 .height = 480, 29 .colorspace = V4L2_COLORSPACE_SRGB, 30 .ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(V4L2_COLORSPACE_SRGB), 31 .quantization = V4L2_QUANTIZATION_FULL_RANGE, 32 .xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(V4L2_COLORSPACE_SRGB), 33 .field = V4L2_FIELD_NONE, 34 }; 35 36 static const struct alvium_pixfmt alvium_csi2_fmts[] = { 37 { 38 /* UYVY8_2X8 */ 39 .id = ALVIUM_FMT_UYVY8_2X8, 40 .code = MEDIA_BUS_FMT_UYVY8_2X8, 41 .colorspace = V4L2_COLORSPACE_SRGB, 42 .fmt_av_bit = ALVIUM_BIT_YUV422_8, 43 .bay_av_bit = ALVIUM_BIT_BAY_NONE, 44 .mipi_fmt_regval = MIPI_CSI2_DT_YUV422_8B, 45 .bay_fmt_regval = -1, 46 .is_raw = 0, 47 }, { 48 /* UYVY8_1X16 */ 49 .id = ALVIUM_FMT_UYVY8_1X16, 50 .code = MEDIA_BUS_FMT_UYVY8_1X16, 51 .colorspace = V4L2_COLORSPACE_SRGB, 52 .fmt_av_bit = ALVIUM_BIT_YUV422_8, 53 .bay_av_bit = ALVIUM_BIT_BAY_NONE, 54 .mipi_fmt_regval = MIPI_CSI2_DT_YUV422_8B, 55 .bay_fmt_regval = -1, 56 .is_raw = 0, 57 }, { 58 /* YUYV8_1X16 */ 59 .id = ALVIUM_FMT_YUYV8_1X16, 60 .code = MEDIA_BUS_FMT_YUYV8_1X16, 61 .colorspace = V4L2_COLORSPACE_SRGB, 62 .fmt_av_bit = ALVIUM_BIT_YUV422_8, 63 .bay_av_bit = ALVIUM_BIT_BAY_NONE, 64 .mipi_fmt_regval = MIPI_CSI2_DT_YUV422_8B, 65 .bay_fmt_regval = -1, 66 .is_raw = 0, 67 }, { 68 /* YUYV8_2X8 */ 69 .id = ALVIUM_FMT_YUYV8_2X8, 70 .code = MEDIA_BUS_FMT_YUYV8_2X8, 71 .colorspace = V4L2_COLORSPACE_SRGB, 72 .fmt_av_bit = ALVIUM_BIT_YUV422_8, 73 .bay_av_bit = ALVIUM_BIT_BAY_NONE, 74 .mipi_fmt_regval = MIPI_CSI2_DT_YUV422_8B, 75 .bay_fmt_regval = -1, 76 .is_raw = 0, 77 }, { 78 /* YUYV10_1X20 */ 79 .id = ALVIUM_FMT_YUYV10_1X20, 80 .code = MEDIA_BUS_FMT_YUYV10_1X20, 81 .colorspace = V4L2_COLORSPACE_SRGB, 82 .fmt_av_bit = ALVIUM_BIT_YUV422_10, 83 .bay_av_bit = ALVIUM_BIT_BAY_NONE, 84 .mipi_fmt_regval = MIPI_CSI2_DT_YUV422_10B, 85 .bay_fmt_regval = -1, 86 .is_raw = 0, 87 }, { 88 /* RGB888_1X24 */ 89 .id = ALVIUM_FMT_RGB888_1X24, 90 .code = MEDIA_BUS_FMT_RGB888_1X24, 91 .colorspace = V4L2_COLORSPACE_SRGB, 92 .fmt_av_bit = ALVIUM_BIT_RGB888, 93 .bay_av_bit = ALVIUM_BIT_BAY_NONE, 94 .mipi_fmt_regval = MIPI_CSI2_DT_RGB888, 95 .bay_fmt_regval = -1, 96 .is_raw = 0, 97 }, { 98 /* RBG888_1X24 */ 99 .id = ALVIUM_FMT_RBG888_1X24, 100 .code = MEDIA_BUS_FMT_RBG888_1X24, 101 .colorspace = V4L2_COLORSPACE_SRGB, 102 .fmt_av_bit = ALVIUM_BIT_RGB888, 103 .bay_av_bit = ALVIUM_BIT_BAY_NONE, 104 .mipi_fmt_regval = MIPI_CSI2_DT_RGB888, 105 .bay_fmt_regval = -1, 106 .is_raw = 0, 107 }, { 108 /* BGR888_1X24 */ 109 .id = ALVIUM_FMT_BGR888_1X24, 110 .code = MEDIA_BUS_FMT_BGR888_1X24, 111 .colorspace = V4L2_COLORSPACE_SRGB, 112 .fmt_av_bit = ALVIUM_BIT_RGB888, 113 .bay_av_bit = ALVIUM_BIT_BAY_NONE, 114 .mipi_fmt_regval = MIPI_CSI2_DT_RGB888, 115 .bay_fmt_regval = -1, 116 .is_raw = 0, 117 }, { 118 /* RGB888_3X8 */ 119 .id = ALVIUM_FMT_RGB888_3X8, 120 .code = MEDIA_BUS_FMT_RGB888_3X8, 121 .colorspace = V4L2_COLORSPACE_SRGB, 122 .fmt_av_bit = ALVIUM_BIT_RGB888, 123 .bay_av_bit = ALVIUM_BIT_BAY_NONE, 124 .mipi_fmt_regval = MIPI_CSI2_DT_RGB888, 125 .bay_fmt_regval = -1, 126 .is_raw = 0, 127 }, { 128 /* Y8_1X8 */ 129 .id = ALVIUM_FMT_Y8_1X8, 130 .code = MEDIA_BUS_FMT_Y8_1X8, 131 .colorspace = V4L2_COLORSPACE_RAW, 132 .fmt_av_bit = ALVIUM_BIT_RAW8, 133 .bay_av_bit = ALVIUM_BIT_BAY_MONO, 134 .mipi_fmt_regval = MIPI_CSI2_DT_RAW8, 135 .bay_fmt_regval = 0x00, 136 .is_raw = 1, 137 }, { 138 /* SGRBG8_1X8 */ 139 .id = ALVIUM_FMT_SGRBG8_1X8, 140 .code = MEDIA_BUS_FMT_SGRBG8_1X8, 141 .colorspace = V4L2_COLORSPACE_RAW, 142 .fmt_av_bit = ALVIUM_BIT_RAW8, 143 .bay_av_bit = ALVIUM_BIT_BAY_GR, 144 .mipi_fmt_regval = MIPI_CSI2_DT_RAW8, 145 .bay_fmt_regval = 0x01, 146 .is_raw = 1, 147 }, { 148 /* SRGGB8_1X8 */ 149 .id = ALVIUM_FMT_SRGGB8_1X8, 150 .code = MEDIA_BUS_FMT_SRGGB8_1X8, 151 .colorspace = V4L2_COLORSPACE_RAW, 152 .fmt_av_bit = ALVIUM_BIT_RAW8, 153 .bay_av_bit = ALVIUM_BIT_BAY_RG, 154 .mipi_fmt_regval = MIPI_CSI2_DT_RAW8, 155 .bay_fmt_regval = 0x02, 156 .is_raw = 1, 157 }, { 158 /* SGBRG8_1X8 */ 159 .id = ALVIUM_FMT_SGBRG8_1X8, 160 .code = MEDIA_BUS_FMT_SGBRG8_1X8, 161 .colorspace = V4L2_COLORSPACE_RAW, 162 .fmt_av_bit = ALVIUM_BIT_RAW8, 163 .bay_av_bit = ALVIUM_BIT_BAY_GB, 164 .mipi_fmt_regval = MIPI_CSI2_DT_RAW8, 165 .bay_fmt_regval = 0x03, 166 .is_raw = 1, 167 }, { 168 /* SBGGR8_1X8 */ 169 .id = ALVIUM_FMT_SBGGR8_1X8, 170 .code = MEDIA_BUS_FMT_SBGGR8_1X8, 171 .colorspace = V4L2_COLORSPACE_RAW, 172 .fmt_av_bit = ALVIUM_BIT_RAW8, 173 .bay_av_bit = ALVIUM_BIT_BAY_BG, 174 .mipi_fmt_regval = MIPI_CSI2_DT_RAW8, 175 .bay_fmt_regval = 0x04, 176 .is_raw = 1, 177 }, { 178 /* Y10_1X10 */ 179 .id = ALVIUM_FMT_Y10_1X10, 180 .code = MEDIA_BUS_FMT_Y10_1X10, 181 .colorspace = V4L2_COLORSPACE_RAW, 182 .fmt_av_bit = ALVIUM_BIT_RAW10, 183 .bay_av_bit = ALVIUM_BIT_BAY_MONO, 184 .mipi_fmt_regval = MIPI_CSI2_DT_RAW10, 185 .bay_fmt_regval = 0x00, 186 .is_raw = 1, 187 }, { 188 /* SGRBG10_1X10 */ 189 .id = ALVIUM_FMT_SGRBG10_1X10, 190 .code = MEDIA_BUS_FMT_SGRBG10_1X10, 191 .colorspace = V4L2_COLORSPACE_RAW, 192 .fmt_av_bit = ALVIUM_BIT_RAW10, 193 .bay_av_bit = ALVIUM_BIT_BAY_GR, 194 .mipi_fmt_regval = MIPI_CSI2_DT_RAW10, 195 .bay_fmt_regval = 0x01, 196 .is_raw = 1, 197 }, { 198 /* SRGGB10_1X10 */ 199 .id = ALVIUM_FMT_SRGGB10_1X10, 200 .code = MEDIA_BUS_FMT_SRGGB10_1X10, 201 .colorspace = V4L2_COLORSPACE_RAW, 202 .fmt_av_bit = ALVIUM_BIT_RAW10, 203 .bay_av_bit = ALVIUM_BIT_BAY_RG, 204 .mipi_fmt_regval = MIPI_CSI2_DT_RAW10, 205 .bay_fmt_regval = 0x02, 206 .is_raw = 1, 207 }, { 208 /* SGBRG10_1X10 */ 209 .id = ALVIUM_FMT_SGBRG10_1X10, 210 .code = MEDIA_BUS_FMT_SGBRG10_1X10, 211 .colorspace = V4L2_COLORSPACE_RAW, 212 .fmt_av_bit = ALVIUM_BIT_RAW10, 213 .bay_av_bit = ALVIUM_BIT_BAY_GB, 214 .mipi_fmt_regval = MIPI_CSI2_DT_RAW10, 215 .bay_fmt_regval = 0x03, 216 .is_raw = 1, 217 }, { 218 /* SBGGR10_1X10 */ 219 .id = ALVIUM_FMT_SBGGR10_1X10, 220 .code = MEDIA_BUS_FMT_SBGGR10_1X10, 221 .colorspace = V4L2_COLORSPACE_RAW, 222 .fmt_av_bit = ALVIUM_BIT_RAW10, 223 .bay_av_bit = ALVIUM_BIT_BAY_BG, 224 .mipi_fmt_regval = MIPI_CSI2_DT_RAW10, 225 .bay_fmt_regval = 0x04, 226 .is_raw = 1, 227 }, { 228 /* Y12_1X12 */ 229 .id = ALVIUM_FMT_Y12_1X12, 230 .code = MEDIA_BUS_FMT_Y12_1X12, 231 .colorspace = V4L2_COLORSPACE_RAW, 232 .fmt_av_bit = ALVIUM_BIT_RAW12, 233 .bay_av_bit = ALVIUM_BIT_BAY_MONO, 234 .mipi_fmt_regval = MIPI_CSI2_DT_RAW12, 235 .bay_fmt_regval = 0x00, 236 .is_raw = 1, 237 }, { 238 /* SGRBG12_1X12 */ 239 .id = ALVIUM_FMT_SGRBG12_1X12, 240 .code = MEDIA_BUS_FMT_SGRBG12_1X12, 241 .colorspace = V4L2_COLORSPACE_RAW, 242 .fmt_av_bit = ALVIUM_BIT_RAW12, 243 .bay_av_bit = ALVIUM_BIT_BAY_GR, 244 .mipi_fmt_regval = MIPI_CSI2_DT_RAW12, 245 .bay_fmt_regval = 0x01, 246 .is_raw = 1, 247 }, { 248 /* SRGGB12_1X12 */ 249 .id = ALVIUM_FMT_SRGGB12_1X12, 250 .code = MEDIA_BUS_FMT_SRGGB12_1X12, 251 .colorspace = V4L2_COLORSPACE_RAW, 252 .fmt_av_bit = ALVIUM_BIT_RAW12, 253 .bay_av_bit = ALVIUM_BIT_BAY_RG, 254 .mipi_fmt_regval = MIPI_CSI2_DT_RAW12, 255 .bay_fmt_regval = 0x02, 256 .is_raw = 1, 257 }, { 258 /* SGBRG12_1X12 */ 259 .id = ALVIUM_FMT_SGBRG12_1X12, 260 .code = MEDIA_BUS_FMT_SGBRG12_1X12, 261 .colorspace = V4L2_COLORSPACE_RAW, 262 .fmt_av_bit = ALVIUM_BIT_RAW12, 263 .bay_av_bit = ALVIUM_BIT_BAY_GB, 264 .mipi_fmt_regval = MIPI_CSI2_DT_RAW12, 265 .bay_fmt_regval = 0x03, 266 .is_raw = 1, 267 }, { 268 /* SBGGR12_1X12 */ 269 .id = ALVIUM_FMT_SBGGR12_1X12, 270 .code = MEDIA_BUS_FMT_SBGGR12_1X12, 271 .colorspace = V4L2_COLORSPACE_RAW, 272 .fmt_av_bit = ALVIUM_BIT_RAW12, 273 .bay_av_bit = ALVIUM_BIT_BAY_BG, 274 .mipi_fmt_regval = MIPI_CSI2_DT_RAW12, 275 .bay_fmt_regval = 0x04, 276 .is_raw = 1, 277 }, { 278 /* SBGGR14_1X14 */ 279 .id = ALVIUM_FMT_SBGGR14_1X14, 280 .code = MEDIA_BUS_FMT_SBGGR14_1X14, 281 .colorspace = V4L2_COLORSPACE_RAW, 282 .fmt_av_bit = ALVIUM_BIT_RAW14, 283 .bay_av_bit = ALVIUM_BIT_BAY_GR, 284 .mipi_fmt_regval = MIPI_CSI2_DT_RAW14, 285 .bay_fmt_regval = 0x01, 286 .is_raw = 1, 287 }, { 288 /* SGBRG14_1X14 */ 289 .id = ALVIUM_FMT_SGBRG14_1X14, 290 .code = MEDIA_BUS_FMT_SGBRG14_1X14, 291 .colorspace = V4L2_COLORSPACE_RAW, 292 .fmt_av_bit = ALVIUM_BIT_RAW14, 293 .bay_av_bit = ALVIUM_BIT_BAY_RG, 294 .mipi_fmt_regval = MIPI_CSI2_DT_RAW14, 295 .bay_fmt_regval = 0x02, 296 .is_raw = 1, 297 }, { 298 /* SRGGB14_1X14 */ 299 .id = ALVIUM_FMT_SRGGB14_1X14, 300 .code = MEDIA_BUS_FMT_SRGGB14_1X14, 301 .colorspace = V4L2_COLORSPACE_RAW, 302 .fmt_av_bit = ALVIUM_BIT_RAW14, 303 .bay_av_bit = ALVIUM_BIT_BAY_GB, 304 .mipi_fmt_regval = MIPI_CSI2_DT_RAW14, 305 .bay_fmt_regval = 0x03, 306 .is_raw = 1, 307 }, { 308 /* SGRBG14_1X14 */ 309 .id = ALVIUM_FMT_SGRBG14_1X14, 310 .code = MEDIA_BUS_FMT_SGRBG14_1X14, 311 .colorspace = V4L2_COLORSPACE_RAW, 312 .fmt_av_bit = ALVIUM_BIT_RAW14, 313 .bay_av_bit = ALVIUM_BIT_BAY_BG, 314 .mipi_fmt_regval = MIPI_CSI2_DT_RAW14, 315 .bay_fmt_regval = 0x04, 316 .is_raw = 1, 317 }, 318 { /* sentinel */ } 319 }; 320 321 static int alvium_read(struct alvium_dev *alvium, u32 reg, u64 *val, int *err) 322 { 323 if (reg & REG_BCRM_V4L2) { 324 reg &= ~REG_BCRM_V4L2; 325 reg += alvium->bcrm_addr; 326 } 327 328 return cci_read(alvium->regmap, reg, val, err); 329 } 330 331 static int alvium_write(struct alvium_dev *alvium, u32 reg, u64 val, int *err) 332 { 333 if (reg & REG_BCRM_V4L2) { 334 reg &= ~REG_BCRM_V4L2; 335 reg += alvium->bcrm_addr; 336 } 337 338 return cci_write(alvium->regmap, reg, val, err); 339 } 340 341 static int alvium_write_hshake(struct alvium_dev *alvium, u32 reg, u64 val) 342 { 343 struct device *dev = &alvium->i2c_client->dev; 344 u64 hshake_bit; 345 int ret = 0; 346 347 /* reset handshake bit and write alvium reg */ 348 alvium_write(alvium, REG_BCRM_WRITE_HANDSHAKE_RW, 0, &ret); 349 alvium_write(alvium, reg, val, &ret); 350 if (ret) { 351 dev_err(dev, "Fail to write reg\n"); 352 return ret; 353 } 354 355 /* poll handshake bit since bit0 = 1 */ 356 read_poll_timeout(alvium_read, hshake_bit, 357 ((hshake_bit & BCRM_HANDSHAKE_W_DONE_EN_BIT) == 1), 358 15000, 45000, true, 359 alvium, REG_BCRM_WRITE_HANDSHAKE_RW, 360 &hshake_bit, &ret); 361 if (ret) { 362 dev_err(dev, "poll bit[0] = 1, hshake reg fail\n"); 363 return ret; 364 } 365 366 /* reset handshake bit, write 0 to bit0 */ 367 alvium_write(alvium, REG_BCRM_WRITE_HANDSHAKE_RW, 0, &ret); 368 if (ret) { 369 dev_err(dev, "Fail to reset hshake reg\n"); 370 return ret; 371 } 372 373 /* poll handshake bit since bit0 = 0 */ 374 read_poll_timeout(alvium_read, hshake_bit, 375 ((hshake_bit & BCRM_HANDSHAKE_W_DONE_EN_BIT) == 0), 376 15000, 45000, true, 377 alvium, REG_BCRM_WRITE_HANDSHAKE_RW, 378 &hshake_bit, &ret); 379 if (ret) { 380 dev_err(dev, "poll bit[0] = 0, hshake reg fail\n"); 381 return ret; 382 } 383 384 return 0; 385 } 386 387 static int alvium_get_bcrm_vers(struct alvium_dev *alvium) 388 { 389 struct device *dev = &alvium->i2c_client->dev; 390 u64 min, maj; 391 int ret = 0; 392 393 ret = alvium_read(alvium, REG_BCRM_MINOR_VERSION_R, &min, &ret); 394 ret = alvium_read(alvium, REG_BCRM_MAJOR_VERSION_R, &maj, &ret); 395 if (ret) 396 return ret; 397 398 dev_info(dev, "bcrm version: %llu.%llu\n", min, maj); 399 400 return 0; 401 } 402 403 static int alvium_get_fw_version(struct alvium_dev *alvium) 404 { 405 struct device *dev = &alvium->i2c_client->dev; 406 u64 spec, maj, min, pat; 407 int ret = 0; 408 409 ret = alvium_read(alvium, REG_BCRM_DEVICE_FW_SPEC_VERSION_R, 410 &spec, &ret); 411 ret = alvium_read(alvium, REG_BCRM_DEVICE_FW_MAJOR_VERSION_R, 412 &maj, &ret); 413 ret = alvium_read(alvium, REG_BCRM_DEVICE_FW_MINOR_VERSION_R, 414 &min, &ret); 415 ret = alvium_read(alvium, REG_BCRM_DEVICE_FW_PATCH_VERSION_R, 416 &pat, &ret); 417 if (ret) 418 return ret; 419 420 dev_info(dev, "fw version: %llu.%llu.%llu.%llu\n", spec, maj, min, pat); 421 422 return 0; 423 } 424 425 static int alvium_get_bcrm_addr(struct alvium_dev *alvium) 426 { 427 u64 val; 428 int ret; 429 430 ret = alvium_read(alvium, REG_BCRM_REG_ADDR_R, &val, NULL); 431 if (ret) 432 return ret; 433 434 alvium->bcrm_addr = val; 435 436 return 0; 437 } 438 439 static int alvium_is_alive(struct alvium_dev *alvium) 440 { 441 u64 bcrm, hbeat; 442 int ret = 0; 443 444 alvium_read(alvium, REG_BCRM_MINOR_VERSION_R, &bcrm, &ret); 445 alvium_read(alvium, REG_BCRM_HEARTBEAT_RW, &hbeat, &ret); 446 if (ret) 447 return ret; 448 449 return hbeat; 450 } 451 452 static void alvium_print_avail_mipi_fmt(struct alvium_dev *alvium) 453 { 454 struct device *dev = &alvium->i2c_client->dev; 455 456 dev_dbg(dev, "avail mipi_fmt yuv420_8_leg: %u\n", 457 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV420_8_LEG]); 458 dev_dbg(dev, "avail mipi_fmt yuv420_8: %u\n", 459 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV420_8]); 460 dev_dbg(dev, "avail mipi_fmt yuv420_10: %u\n", 461 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV420_10]); 462 dev_dbg(dev, "avail mipi_fmt yuv420_8_csps: %u\n", 463 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV420_8_CSPS]); 464 dev_dbg(dev, "avail mipi_fmt yuv420_10_csps: %u\n", 465 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV420_10_CSPS]); 466 dev_dbg(dev, "avail mipi_fmt yuv422_8: %u\n", 467 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV422_8]); 468 dev_dbg(dev, "avail mipi_fmt yuv422_10: %u\n", 469 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV422_10]); 470 dev_dbg(dev, "avail mipi_fmt rgb888: %u\n", 471 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RGB888]); 472 dev_dbg(dev, "avail mipi_fmt rgb666: %u\n", 473 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RGB666]); 474 dev_dbg(dev, "avail mipi_fmt rgb565: %u\n", 475 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RGB565]); 476 dev_dbg(dev, "avail mipi_fmt rgb555: %u\n", 477 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RGB555]); 478 dev_dbg(dev, "avail mipi_fmt rgb444: %u\n", 479 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RGB444]); 480 dev_dbg(dev, "avail mipi_fmt raw6: %u\n", 481 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RAW6]); 482 dev_dbg(dev, "avail mipi_fmt raw7: %u\n", 483 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RAW7]); 484 dev_dbg(dev, "avail mipi_fmt raw8: %u\n", 485 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RAW8]); 486 dev_dbg(dev, "avail mipi_fmt raw10: %u\n", 487 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RAW10]); 488 dev_dbg(dev, "avail mipi_fmt raw12: %u\n", 489 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RAW12]); 490 dev_dbg(dev, "avail mipi_fmt raw14: %u\n", 491 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RAW14]); 492 dev_dbg(dev, "avail mipi_fmt jpeg: %u\n", 493 alvium->is_mipi_fmt_avail[ALVIUM_BIT_JPEG]); 494 } 495 496 static void alvium_print_avail_feat(struct alvium_dev *alvium) 497 { 498 struct device *dev = &alvium->i2c_client->dev; 499 500 dev_dbg(dev, "feature rev_x: %u\n", alvium->avail_ft.rev_x); 501 dev_dbg(dev, "feature rev_y: %u\n", alvium->avail_ft.rev_y); 502 dev_dbg(dev, "feature int_autop: %u\n", alvium->avail_ft.int_autop); 503 dev_dbg(dev, "feature black_lvl: %u\n", alvium->avail_ft.black_lvl); 504 dev_dbg(dev, "feature gain: %u\n", alvium->avail_ft.gain); 505 dev_dbg(dev, "feature gamma: %u\n", alvium->avail_ft.gamma); 506 dev_dbg(dev, "feature contrast: %u\n", alvium->avail_ft.contrast); 507 dev_dbg(dev, "feature sat: %u\n", alvium->avail_ft.sat); 508 dev_dbg(dev, "feature hue: %u\n", alvium->avail_ft.hue); 509 dev_dbg(dev, "feature whiteb: %u\n", alvium->avail_ft.whiteb); 510 dev_dbg(dev, "feature sharp: %u\n", alvium->avail_ft.sharp); 511 dev_dbg(dev, "feature auto_exp: %u\n", alvium->avail_ft.auto_exp); 512 dev_dbg(dev, "feature auto_gain: %u\n", alvium->avail_ft.auto_gain); 513 dev_dbg(dev, "feature auto_whiteb: %u\n", alvium->avail_ft.auto_whiteb); 514 dev_dbg(dev, "feature dev_temp: %u\n", alvium->avail_ft.dev_temp); 515 dev_dbg(dev, "feature acq_abort: %u\n", alvium->avail_ft.acq_abort); 516 dev_dbg(dev, "feature acq_fr: %u\n", alvium->avail_ft.acq_fr); 517 dev_dbg(dev, "feature fr_trigger: %u\n", alvium->avail_ft.fr_trigger); 518 dev_dbg(dev, "feature exp_acq_line: %u\n", 519 alvium->avail_ft.exp_acq_line); 520 } 521 522 static void alvium_print_avail_bayer(struct alvium_dev *alvium) 523 { 524 struct device *dev = &alvium->i2c_client->dev; 525 526 dev_dbg(dev, "avail bayer mono: %u\n", 527 alvium->is_bay_avail[ALVIUM_BIT_BAY_MONO]); 528 dev_dbg(dev, "avail bayer gr: %u\n", 529 alvium->is_bay_avail[ALVIUM_BIT_BAY_GR]); 530 dev_dbg(dev, "avail bayer rg: %u\n", 531 alvium->is_bay_avail[ALVIUM_BIT_BAY_RG]); 532 dev_dbg(dev, "avail bayer gb: %u\n", 533 alvium->is_bay_avail[ALVIUM_BIT_BAY_GB]); 534 dev_dbg(dev, "avail bayer bg: %u\n", 535 alvium->is_bay_avail[ALVIUM_BIT_BAY_BG]); 536 } 537 538 static int alvium_get_feat_inq(struct alvium_dev *alvium) 539 { 540 struct alvium_avail_feat *f; 541 u64 val; 542 int ret; 543 544 ret = alvium_read(alvium, REG_BCRM_FEATURE_INQUIRY_R, &val, NULL); 545 if (ret) 546 return ret; 547 548 f = (struct alvium_avail_feat *)&val; 549 alvium->avail_ft = *f; 550 alvium_print_avail_feat(alvium); 551 552 return 0; 553 } 554 555 static int alvium_get_host_supp_csi_lanes(struct alvium_dev *alvium) 556 { 557 u64 val; 558 int ret; 559 560 ret = alvium_read(alvium, REG_BCRM_CSI2_LANE_COUNT_RW, &val, NULL); 561 if (ret) 562 return ret; 563 564 alvium->h_sup_csi_lanes = val; 565 566 return 0; 567 } 568 569 static int alvium_set_csi_lanes(struct alvium_dev *alvium) 570 { 571 struct device *dev = &alvium->i2c_client->dev; 572 u64 num_lanes; 573 int ret; 574 575 num_lanes = alvium->ep.bus.mipi_csi2.num_data_lanes; 576 577 if (num_lanes > alvium->h_sup_csi_lanes) 578 return -EINVAL; 579 580 ret = alvium_write_hshake(alvium, REG_BCRM_CSI2_LANE_COUNT_RW, 581 num_lanes); 582 if (ret) { 583 dev_err(dev, "Fail to set csi lanes reg\n"); 584 return ret; 585 } 586 587 return 0; 588 } 589 590 static int alvium_set_lp2hs_delay(struct alvium_dev *alvium) 591 { 592 struct device *dev = &alvium->i2c_client->dev; 593 int ret = 0; 594 595 /* 596 * The purpose of this reg is force a DPhy reset 597 * for the period described by the millisecond on 598 * the reg, before it starts streaming. 599 * 600 * To be clear, with that value bigger than 0 the 601 * Alvium forces a dphy-reset on all lanes for that period. 602 * That means all lanes go up into low power state. 603 * 604 */ 605 alvium_write(alvium, REG_BCRM_LP2HS_DELAY_RW, 606 ALVIUM_LP2HS_DELAY_MS, &ret); 607 if (ret) { 608 dev_err(dev, "Fail to set lp2hs delay reg\n"); 609 return ret; 610 } 611 612 return 0; 613 } 614 615 static int alvium_get_csi_clk_params(struct alvium_dev *alvium) 616 { 617 u64 min_csi_clk, max_csi_clk; 618 int ret = 0; 619 620 alvium_read(alvium, REG_BCRM_CSI2_CLOCK_MIN_R, &min_csi_clk, &ret); 621 alvium_read(alvium, REG_BCRM_CSI2_CLOCK_MAX_R, &max_csi_clk, &ret); 622 if (ret) 623 return ret; 624 625 alvium->min_csi_clk = min_csi_clk; 626 alvium->max_csi_clk = max_csi_clk; 627 628 return 0; 629 } 630 631 static int alvium_set_csi_clk(struct alvium_dev *alvium) 632 { 633 struct device *dev = &alvium->i2c_client->dev; 634 u64 csi_clk; 635 int ret; 636 637 csi_clk = clamp(alvium->ep.link_frequencies[0], 638 (u64)alvium->min_csi_clk, (u64)alvium->max_csi_clk); 639 640 if (alvium->ep.link_frequencies[0] != (u64)csi_clk) { 641 dev_warn(dev, 642 "requested csi clock (%llu MHz) out of range [%u, %u] Adjusted to %llu\n", 643 alvium->ep.link_frequencies[0], 644 alvium->min_csi_clk, alvium->max_csi_clk, csi_clk); 645 } 646 647 ret = alvium_write_hshake(alvium, REG_BCRM_CSI2_CLOCK_RW, csi_clk); 648 if (ret) { 649 dev_err(dev, "Fail to set csi clock reg\n"); 650 return ret; 651 } 652 653 alvium->link_freq = csi_clk; 654 655 return 0; 656 } 657 658 static int alvium_get_img_width_params(struct alvium_dev *alvium) 659 { 660 u64 imgw, imgw_min, imgw_max, imgw_inc; 661 int ret = 0; 662 663 alvium_read(alvium, REG_BCRM_IMG_WIDTH_RW, &imgw, &ret); 664 alvium_read(alvium, REG_BCRM_IMG_WIDTH_MIN_R, &imgw_min, &ret); 665 alvium_read(alvium, REG_BCRM_IMG_WIDTH_MAX_R, &imgw_max, &ret); 666 alvium_read(alvium, REG_BCRM_IMG_WIDTH_INC_R, &imgw_inc, &ret); 667 if (ret) 668 return ret; 669 670 alvium->dft_img_width = imgw; 671 alvium->img_min_width = imgw_min; 672 alvium->img_max_width = imgw_max; 673 alvium->img_inc_width = imgw_inc; 674 675 return 0; 676 } 677 678 static int alvium_get_img_height_params(struct alvium_dev *alvium) 679 { 680 u64 imgh, imgh_min, imgh_max, imgh_inc; 681 int ret = 0; 682 683 alvium_read(alvium, REG_BCRM_IMG_HEIGHT_RW, &imgh, &ret); 684 alvium_read(alvium, REG_BCRM_IMG_HEIGHT_MIN_R, &imgh_min, &ret); 685 alvium_read(alvium, REG_BCRM_IMG_HEIGHT_MAX_R, &imgh_max, &ret); 686 alvium_read(alvium, REG_BCRM_IMG_HEIGHT_INC_R, &imgh_inc, &ret); 687 if (ret) 688 return ret; 689 690 alvium->dft_img_height = imgh; 691 alvium->img_min_height = imgh_min; 692 alvium->img_max_height = imgh_max; 693 alvium->img_inc_height = imgh_inc; 694 695 return 0; 696 } 697 698 static int alvium_set_img_width(struct alvium_dev *alvium, u32 width) 699 { 700 struct device *dev = &alvium->i2c_client->dev; 701 int ret; 702 703 ret = alvium_write_hshake(alvium, REG_BCRM_IMG_WIDTH_RW, width); 704 if (ret) { 705 dev_err(dev, "Fail to set img width\n"); 706 return ret; 707 } 708 709 return 0; 710 } 711 712 static int alvium_set_img_height(struct alvium_dev *alvium, u32 height) 713 { 714 struct device *dev = &alvium->i2c_client->dev; 715 int ret; 716 717 ret = alvium_write_hshake(alvium, REG_BCRM_IMG_HEIGHT_RW, height); 718 if (ret) { 719 dev_err(dev, "Fail to set img height\n"); 720 return ret; 721 } 722 723 return 0; 724 } 725 726 static int alvium_set_img_offx(struct alvium_dev *alvium, u32 offx) 727 { 728 struct device *dev = &alvium->i2c_client->dev; 729 int ret; 730 731 ret = alvium_write_hshake(alvium, REG_BCRM_IMG_OFFSET_X_RW, offx); 732 if (ret) { 733 dev_err(dev, "Fail to set img offx\n"); 734 return ret; 735 } 736 737 return 0; 738 } 739 740 static int alvium_set_img_offy(struct alvium_dev *alvium, u32 offy) 741 { 742 struct device *dev = &alvium->i2c_client->dev; 743 int ret; 744 745 ret = alvium_write_hshake(alvium, REG_BCRM_IMG_OFFSET_Y_RW, offy); 746 if (ret) { 747 dev_err(dev, "Fail to set img offy\n"); 748 return ret; 749 } 750 751 return 0; 752 } 753 754 static int alvium_get_offx_params(struct alvium_dev *alvium) 755 { 756 u64 min_offx, max_offx, inc_offx; 757 int ret = 0; 758 759 alvium_read(alvium, REG_BCRM_IMG_OFFSET_X_MIN_R, &min_offx, &ret); 760 alvium_read(alvium, REG_BCRM_IMG_OFFSET_X_MAX_R, &max_offx, &ret); 761 alvium_read(alvium, REG_BCRM_IMG_OFFSET_X_INC_R, &inc_offx, &ret); 762 if (ret) 763 return ret; 764 765 alvium->min_offx = min_offx; 766 alvium->max_offx = max_offx; 767 alvium->inc_offx = inc_offx; 768 769 return 0; 770 } 771 772 static int alvium_get_offy_params(struct alvium_dev *alvium) 773 { 774 u64 min_offy, max_offy, inc_offy; 775 int ret = 0; 776 777 alvium_read(alvium, REG_BCRM_IMG_OFFSET_Y_MIN_R, &min_offy, &ret); 778 alvium_read(alvium, REG_BCRM_IMG_OFFSET_Y_MAX_R, &max_offy, &ret); 779 alvium_read(alvium, REG_BCRM_IMG_OFFSET_Y_INC_R, &inc_offy, &ret); 780 if (ret) 781 return ret; 782 783 alvium->min_offy = min_offy; 784 alvium->max_offy = max_offy; 785 alvium->inc_offy = inc_offy; 786 787 return 0; 788 } 789 790 static int alvium_get_gain_params(struct alvium_dev *alvium) 791 { 792 u64 dft_gain, min_gain, max_gain, inc_gain; 793 int ret = 0; 794 795 alvium_read(alvium, REG_BCRM_GAIN_RW, &dft_gain, &ret); 796 alvium_read(alvium, REG_BCRM_GAIN_MIN_R, &min_gain, &ret); 797 alvium_read(alvium, REG_BCRM_GAIN_MAX_R, &max_gain, &ret); 798 alvium_read(alvium, REG_BCRM_GAIN_INC_R, &inc_gain, &ret); 799 if (ret) 800 return ret; 801 802 alvium->dft_gain = dft_gain; 803 alvium->min_gain = min_gain; 804 alvium->max_gain = max_gain; 805 alvium->inc_gain = inc_gain; 806 807 return 0; 808 } 809 810 static int alvium_get_exposure_params(struct alvium_dev *alvium) 811 { 812 u64 dft_exp, min_exp, max_exp, inc_exp; 813 int ret = 0; 814 815 alvium_read(alvium, REG_BCRM_EXPOSURE_TIME_RW, &dft_exp, &ret); 816 alvium_read(alvium, REG_BCRM_EXPOSURE_TIME_MIN_R, &min_exp, &ret); 817 alvium_read(alvium, REG_BCRM_EXPOSURE_TIME_MAX_R, &max_exp, &ret); 818 alvium_read(alvium, REG_BCRM_EXPOSURE_TIME_INC_R, &inc_exp, &ret); 819 if (ret) 820 return ret; 821 822 alvium->dft_exp = dft_exp; 823 alvium->min_exp = min_exp; 824 alvium->max_exp = max_exp; 825 alvium->inc_exp = inc_exp; 826 827 return 0; 828 } 829 830 static int alvium_get_red_balance_ratio_params(struct alvium_dev *alvium) 831 { 832 u64 dft_rb, min_rb, max_rb, inc_rb; 833 int ret = 0; 834 835 alvium_read(alvium, REG_BCRM_RED_BALANCE_RATIO_RW, &dft_rb, &ret); 836 alvium_read(alvium, REG_BCRM_RED_BALANCE_RATIO_MIN_R, &min_rb, &ret); 837 alvium_read(alvium, REG_BCRM_RED_BALANCE_RATIO_MAX_R, &max_rb, &ret); 838 alvium_read(alvium, REG_BCRM_RED_BALANCE_RATIO_INC_R, &inc_rb, &ret); 839 if (ret) 840 return ret; 841 842 alvium->dft_rbalance = dft_rb; 843 alvium->min_rbalance = min_rb; 844 alvium->max_rbalance = max_rb; 845 alvium->inc_rbalance = inc_rb; 846 847 return 0; 848 } 849 850 static int alvium_get_blue_balance_ratio_params(struct alvium_dev *alvium) 851 { 852 u64 dft_bb, min_bb, max_bb, inc_bb; 853 int ret = 0; 854 855 alvium_read(alvium, REG_BCRM_BLUE_BALANCE_RATIO_RW, &dft_bb, &ret); 856 alvium_read(alvium, REG_BCRM_BLUE_BALANCE_RATIO_MIN_R, &min_bb, &ret); 857 alvium_read(alvium, REG_BCRM_BLUE_BALANCE_RATIO_MAX_R, &max_bb, &ret); 858 alvium_read(alvium, REG_BCRM_BLUE_BALANCE_RATIO_INC_R, &inc_bb, &ret); 859 if (ret) 860 return ret; 861 862 alvium->dft_bbalance = dft_bb; 863 alvium->min_bbalance = min_bb; 864 alvium->max_bbalance = max_bb; 865 alvium->inc_bbalance = inc_bb; 866 867 return 0; 868 } 869 870 static int alvium_get_hue_params(struct alvium_dev *alvium) 871 { 872 u64 dft_hue, min_hue, max_hue, inc_hue; 873 int ret = 0; 874 875 alvium_read(alvium, REG_BCRM_HUE_RW, &dft_hue, &ret); 876 alvium_read(alvium, REG_BCRM_HUE_MIN_R, &min_hue, &ret); 877 alvium_read(alvium, REG_BCRM_HUE_MAX_R, &max_hue, &ret); 878 alvium_read(alvium, REG_BCRM_HUE_INC_R, &inc_hue, &ret); 879 if (ret) 880 return ret; 881 882 alvium->dft_hue = (s32)dft_hue; 883 alvium->min_hue = (s32)min_hue; 884 alvium->max_hue = (s32)max_hue; 885 alvium->inc_hue = (s32)inc_hue; 886 887 return 0; 888 } 889 890 static int alvium_get_black_lvl_params(struct alvium_dev *alvium) 891 { 892 u64 dft_blvl, min_blvl, max_blvl, inc_blvl; 893 int ret = 0; 894 895 alvium_read(alvium, REG_BCRM_BLACK_LEVEL_RW, &dft_blvl, &ret); 896 alvium_read(alvium, REG_BCRM_BLACK_LEVEL_MIN_R, &min_blvl, &ret); 897 alvium_read(alvium, REG_BCRM_BLACK_LEVEL_MAX_R, &max_blvl, &ret); 898 alvium_read(alvium, REG_BCRM_BLACK_LEVEL_INC_R, &inc_blvl, &ret); 899 if (ret) 900 return ret; 901 902 alvium->dft_black_lvl = (s32)dft_blvl; 903 alvium->min_black_lvl = (s32)min_blvl; 904 alvium->max_black_lvl = (s32)max_blvl; 905 alvium->inc_black_lvl = (s32)inc_blvl; 906 907 return 0; 908 } 909 910 static int alvium_get_gamma_params(struct alvium_dev *alvium) 911 { 912 u64 dft_g, min_g, max_g, inc_g; 913 int ret = 0; 914 915 alvium_read(alvium, REG_BCRM_GAMMA_RW, &dft_g, &ret); 916 alvium_read(alvium, REG_BCRM_GAMMA_MIN_R, &min_g, &ret); 917 alvium_read(alvium, REG_BCRM_GAMMA_MAX_R, &max_g, &ret); 918 alvium_read(alvium, REG_BCRM_GAMMA_INC_R, &inc_g, &ret); 919 if (ret) 920 return ret; 921 922 alvium->dft_gamma = dft_g; 923 alvium->min_gamma = min_g; 924 alvium->max_gamma = max_g; 925 alvium->inc_gamma = inc_g; 926 927 return 0; 928 } 929 930 static int alvium_get_sharpness_params(struct alvium_dev *alvium) 931 { 932 u64 dft_sh, min_sh, max_sh, inc_sh; 933 int ret = 0; 934 935 alvium_read(alvium, REG_BCRM_SHARPNESS_RW, &dft_sh, &ret); 936 alvium_read(alvium, REG_BCRM_SHARPNESS_MIN_R, &min_sh, &ret); 937 alvium_read(alvium, REG_BCRM_BLACK_LEVEL_MAX_R, &max_sh, &ret); 938 alvium_read(alvium, REG_BCRM_SHARPNESS_INC_R, &inc_sh, &ret); 939 if (ret) 940 return ret; 941 942 alvium->dft_sharp = (s32)dft_sh; 943 alvium->min_sharp = (s32)min_sh; 944 alvium->max_sharp = (s32)max_sh; 945 alvium->inc_sharp = (s32)inc_sh; 946 947 return 0; 948 } 949 950 static int alvium_get_contrast_params(struct alvium_dev *alvium) 951 { 952 u64 dft_c, min_c, max_c, inc_c; 953 int ret = 0; 954 955 alvium_read(alvium, REG_BCRM_CONTRAST_VALUE_RW, &dft_c, &ret); 956 alvium_read(alvium, REG_BCRM_CONTRAST_VALUE_MIN_R, &min_c, &ret); 957 alvium_read(alvium, REG_BCRM_CONTRAST_VALUE_MAX_R, &max_c, &ret); 958 alvium_read(alvium, REG_BCRM_CONTRAST_VALUE_INC_R, &inc_c, &ret); 959 if (ret) 960 return ret; 961 962 alvium->dft_contrast = dft_c; 963 alvium->min_contrast = min_c; 964 alvium->max_contrast = max_c; 965 alvium->inc_contrast = inc_c; 966 967 return 0; 968 } 969 970 static int alvium_get_saturation_params(struct alvium_dev *alvium) 971 { 972 u64 dft_sat, min_sat, max_sat, inc_sat; 973 int ret = 0; 974 975 alvium_read(alvium, REG_BCRM_SATURATION_RW, &dft_sat, &ret); 976 alvium_read(alvium, REG_BCRM_SATURATION_MIN_R, &min_sat, &ret); 977 alvium_read(alvium, REG_BCRM_SATURATION_MAX_R, &max_sat, &ret); 978 alvium_read(alvium, REG_BCRM_SATURATION_INC_R, &inc_sat, &ret); 979 if (ret) 980 return ret; 981 982 alvium->dft_sat = dft_sat; 983 alvium->min_sat = min_sat; 984 alvium->max_sat = max_sat; 985 alvium->inc_sat = inc_sat; 986 987 return 0; 988 } 989 990 static int alvium_set_bcm_mode(struct alvium_dev *alvium) 991 { 992 int ret = 0; 993 994 alvium_write(alvium, REG_GENCP_CHANGEMODE_W, ALVIUM_BCM_MODE, &ret); 995 alvium->bcrm_mode = ALVIUM_BCM_MODE; 996 997 return ret; 998 } 999 1000 static int alvium_get_mode(struct alvium_dev *alvium) 1001 { 1002 u64 bcrm_mode; 1003 int ret; 1004 1005 ret = alvium_read(alvium, REG_GENCP_CURRENTMODE_R, &bcrm_mode, NULL); 1006 if (ret) 1007 return ret; 1008 1009 switch (bcrm_mode) { 1010 case ALVIUM_BCM_MODE: 1011 alvium->bcrm_mode = ALVIUM_BCM_MODE; 1012 break; 1013 case ALVIUM_GENCP_MODE: 1014 alvium->bcrm_mode = ALVIUM_GENCP_MODE; 1015 break; 1016 } 1017 1018 return 0; 1019 } 1020 1021 static int alvium_get_avail_mipi_data_format(struct alvium_dev *alvium) 1022 { 1023 struct alvium_avail_mipi_fmt *avail_fmt; 1024 u64 val; 1025 int ret; 1026 1027 ret = alvium_read(alvium, REG_BCRM_IMG_AVAILABLE_MIPI_DATA_FORMATS_R, 1028 &val, NULL); 1029 if (ret) 1030 return ret; 1031 1032 avail_fmt = (struct alvium_avail_mipi_fmt *)&val; 1033 1034 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV420_8_LEG] = 1035 avail_fmt->yuv420_8_leg; 1036 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV420_8] = 1037 avail_fmt->yuv420_8; 1038 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV420_10] = 1039 avail_fmt->yuv420_10; 1040 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV420_8_CSPS] = 1041 avail_fmt->yuv420_8_csps; 1042 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV420_10_CSPS] = 1043 avail_fmt->yuv420_10_csps; 1044 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV422_8] = 1045 avail_fmt->yuv422_8; 1046 alvium->is_mipi_fmt_avail[ALVIUM_BIT_YUV422_10] = 1047 avail_fmt->yuv422_10; 1048 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RGB888] = 1049 avail_fmt->rgb888; 1050 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RGB666] = 1051 avail_fmt->rgb666; 1052 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RGB565] = 1053 avail_fmt->rgb565; 1054 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RGB555] = 1055 avail_fmt->rgb555; 1056 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RGB444] = 1057 avail_fmt->rgb444; 1058 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RAW6] = 1059 avail_fmt->raw6; 1060 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RAW7] = 1061 avail_fmt->raw7; 1062 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RAW8] = 1063 avail_fmt->raw8; 1064 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RAW10] = 1065 avail_fmt->raw10; 1066 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RAW12] = 1067 avail_fmt->raw12; 1068 alvium->is_mipi_fmt_avail[ALVIUM_BIT_RAW14] = 1069 avail_fmt->raw14; 1070 alvium->is_mipi_fmt_avail[ALVIUM_BIT_JPEG] = 1071 avail_fmt->jpeg; 1072 1073 alvium_print_avail_mipi_fmt(alvium); 1074 1075 return 0; 1076 } 1077 1078 static int alvium_setup_mipi_fmt(struct alvium_dev *alvium) 1079 { 1080 unsigned int avail_fmt_cnt = 0; 1081 unsigned int fmt = 0; 1082 size_t sz = 0; 1083 1084 /* calculate fmt array size */ 1085 for (fmt = 0; fmt < ALVIUM_NUM_SUPP_MIPI_DATA_FMT; fmt++) { 1086 if (!alvium->is_mipi_fmt_avail[alvium_csi2_fmts[fmt].fmt_av_bit]) 1087 continue; 1088 1089 if (!alvium_csi2_fmts[fmt].is_raw || 1090 alvium->is_bay_avail[alvium_csi2_fmts[fmt].bay_av_bit]) 1091 sz++; 1092 } 1093 1094 /* init alvium_csi2_fmt array */ 1095 alvium->alvium_csi2_fmt_n = sz; 1096 alvium->alvium_csi2_fmt = 1097 kmalloc_array(sz, sizeof(struct alvium_pixfmt), GFP_KERNEL); 1098 if (!alvium->alvium_csi2_fmt) 1099 return -ENOMEM; 1100 1101 /* Create the alvium_csi2 fmt array from formats available */ 1102 for (fmt = 0; fmt < ALVIUM_NUM_SUPP_MIPI_DATA_FMT; fmt++) { 1103 if (!alvium->is_mipi_fmt_avail[alvium_csi2_fmts[fmt].fmt_av_bit]) 1104 continue; 1105 1106 if (!alvium_csi2_fmts[fmt].is_raw || 1107 alvium->is_bay_avail[alvium_csi2_fmts[fmt].bay_av_bit]) { 1108 alvium->alvium_csi2_fmt[avail_fmt_cnt] = 1109 alvium_csi2_fmts[fmt]; 1110 avail_fmt_cnt++; 1111 } 1112 } 1113 1114 return 0; 1115 } 1116 1117 static int alvium_set_mipi_fmt(struct alvium_dev *alvium, 1118 const struct alvium_pixfmt *pixfmt) 1119 { 1120 struct device *dev = &alvium->i2c_client->dev; 1121 int ret; 1122 1123 ret = alvium_write_hshake(alvium, REG_BCRM_IMG_MIPI_DATA_FORMAT_RW, 1124 pixfmt->mipi_fmt_regval); 1125 if (ret) { 1126 dev_err(dev, "Fail to set mipi fmt\n"); 1127 return ret; 1128 } 1129 1130 return 0; 1131 } 1132 1133 static int alvium_get_avail_bayer(struct alvium_dev *alvium) 1134 { 1135 struct alvium_avail_bayer *avail_bay; 1136 u64 val; 1137 int ret; 1138 1139 ret = alvium_read(alvium, REG_BCRM_IMG_BAYER_PATTERN_INQUIRY_R, 1140 &val, NULL); 1141 if (ret) 1142 return ret; 1143 1144 avail_bay = (struct alvium_avail_bayer *)&val; 1145 1146 alvium->is_bay_avail[ALVIUM_BIT_BAY_MONO] = avail_bay->mono; 1147 alvium->is_bay_avail[ALVIUM_BIT_BAY_GR] = avail_bay->gr; 1148 alvium->is_bay_avail[ALVIUM_BIT_BAY_RG] = avail_bay->rg; 1149 alvium->is_bay_avail[ALVIUM_BIT_BAY_GB] = avail_bay->gb; 1150 alvium->is_bay_avail[ALVIUM_BIT_BAY_BG] = avail_bay->bg; 1151 1152 alvium_print_avail_bayer(alvium); 1153 1154 return 0; 1155 } 1156 1157 static int alvium_set_bayer_pattern(struct alvium_dev *alvium, 1158 const struct alvium_pixfmt *pixfmt) 1159 { 1160 struct device *dev = &alvium->i2c_client->dev; 1161 int ret; 1162 1163 ret = alvium_write_hshake(alvium, REG_BCRM_IMG_BAYER_PATTERN_RW, 1164 pixfmt->bay_fmt_regval); 1165 if (ret) { 1166 dev_err(dev, "Fail to set bayer pattern\n"); 1167 return ret; 1168 } 1169 1170 return 0; 1171 } 1172 1173 static int alvium_get_frame_interval(struct alvium_dev *alvium, 1174 u64 *min_fr, u64 *max_fr) 1175 { 1176 int ret = 0; 1177 1178 alvium_read(alvium, REG_BCRM_ACQUISITION_FRAME_RATE_MIN_R, 1179 min_fr, &ret); 1180 alvium_read(alvium, REG_BCRM_ACQUISITION_FRAME_RATE_MAX_R, 1181 max_fr, &ret); 1182 1183 return ret; 1184 } 1185 1186 static int alvium_set_frame_rate(struct alvium_dev *alvium, u64 fr) 1187 { 1188 struct device *dev = &alvium->i2c_client->dev; 1189 int ret; 1190 1191 ret = alvium_write_hshake(alvium, REG_BCRM_ACQUISITION_FRAME_RATE_RW, 1192 fr); 1193 if (ret) { 1194 dev_err(dev, "Fail to set frame rate lanes reg\n"); 1195 return ret; 1196 } 1197 1198 dev_dbg(dev, "set frame rate: %llu us\n", fr); 1199 1200 return 0; 1201 } 1202 1203 static int alvium_set_stream_mipi(struct alvium_dev *alvium, bool on) 1204 { 1205 struct device *dev = &alvium->i2c_client->dev; 1206 int ret; 1207 1208 ret = alvium_write_hshake(alvium, on ? REG_BCRM_ACQUISITION_START_RW : 1209 REG_BCRM_ACQUISITION_STOP_RW, 0x01); 1210 if (ret) { 1211 dev_err(dev, "Fail set_stream_mipi\n"); 1212 return ret; 1213 } 1214 1215 return 0; 1216 } 1217 1218 static int alvium_get_gain(struct alvium_dev *alvium) 1219 { 1220 u64 gain; 1221 int ret; 1222 1223 /* The unit is millibel (1 mB = 0.01 dB) */ 1224 ret = alvium_read(alvium, REG_BCRM_GAIN_RW, &gain, NULL); 1225 if (ret) 1226 return ret; 1227 1228 return gain; 1229 } 1230 1231 static int alvium_set_ctrl_gain(struct alvium_dev *alvium, int gain) 1232 { 1233 struct device *dev = &alvium->i2c_client->dev; 1234 int ret; 1235 1236 /* The unit is millibel (1 mB = 0.01 dB) */ 1237 ret = alvium_write_hshake(alvium, REG_BCRM_GAIN_RW, (u64)gain); 1238 if (ret) { 1239 dev_err(dev, "Fail to set gain value reg\n"); 1240 return ret; 1241 } 1242 1243 return 0; 1244 } 1245 1246 static int alvium_set_ctrl_auto_gain(struct alvium_dev *alvium, bool on) 1247 { 1248 struct device *dev = &alvium->i2c_client->dev; 1249 int ret; 1250 1251 ret = alvium_write_hshake(alvium, REG_BCRM_GAIN_AUTO_RW, 1252 on ? 0x02 : 0x00); 1253 if (ret) { 1254 dev_err(dev, "Fail to set autogain reg\n"); 1255 return ret; 1256 } 1257 1258 return 0; 1259 } 1260 1261 static int alvium_get_exposure(struct alvium_dev *alvium) 1262 { 1263 u64 exp; 1264 int ret; 1265 1266 /* Exposure time in ns */ 1267 ret = alvium_read(alvium, REG_BCRM_EXPOSURE_TIME_RW, &exp, NULL); 1268 if (ret) 1269 return ret; 1270 1271 return exp; 1272 } 1273 1274 static int alvium_set_ctrl_auto_exposure(struct alvium_dev *alvium, bool on) 1275 { 1276 struct device *dev = &alvium->i2c_client->dev; 1277 int ret; 1278 1279 ret = alvium_write_hshake(alvium, REG_BCRM_WHITE_BALANCE_AUTO_RW, 1280 on ? 0x02 : 0x00); 1281 if (ret) { 1282 dev_err(dev, "Fail to set autoexposure reg\n"); 1283 return ret; 1284 } 1285 1286 return 0; 1287 } 1288 1289 static int alvium_set_ctrl_exposure(struct alvium_dev *alvium, int exposure_ns) 1290 { 1291 struct device *dev = &alvium->i2c_client->dev; 1292 int ret; 1293 1294 ret = alvium_write_hshake(alvium, REG_BCRM_EXPOSURE_TIME_RW, 1295 (u64)exposure_ns); 1296 if (ret) { 1297 dev_err(dev, "Fail to set exposure value reg\n"); 1298 return ret; 1299 } 1300 1301 return 0; 1302 } 1303 1304 static int alvium_set_ctrl_blue_balance_ratio(struct alvium_dev *alvium, 1305 int blue) 1306 { 1307 struct device *dev = &alvium->i2c_client->dev; 1308 int ret; 1309 1310 ret = alvium_write_hshake(alvium, REG_BCRM_BLUE_BALANCE_RATIO_RW, 1311 (u64)blue); 1312 if (ret) { 1313 dev_err(dev, "Fail to set blue ratio value reg\n"); 1314 return ret; 1315 } 1316 1317 return 0; 1318 } 1319 1320 static int alvium_set_ctrl_red_balance_ratio(struct alvium_dev *alvium, int red) 1321 { 1322 struct device *dev = &alvium->i2c_client->dev; 1323 int ret; 1324 1325 ret = alvium_write_hshake(alvium, REG_BCRM_RED_BALANCE_RATIO_RW, 1326 (u64)red); 1327 if (ret) { 1328 dev_err(dev, "Fail to set red ratio value reg\n"); 1329 return ret; 1330 } 1331 1332 return 0; 1333 } 1334 1335 static int alvium_set_ctrl_awb(struct alvium_dev *alvium, bool on) 1336 { 1337 struct device *dev = &alvium->i2c_client->dev; 1338 int ret; 1339 1340 ret = alvium_write_hshake(alvium, REG_BCRM_WHITE_BALANCE_AUTO_RW, 1341 on ? 0x02 : 0x00); 1342 if (ret) { 1343 dev_err(dev, "Fail to set awb reg\n"); 1344 return ret; 1345 } 1346 1347 return 0; 1348 } 1349 1350 static int alvium_set_ctrl_hue(struct alvium_dev *alvium, int val) 1351 { 1352 struct device *dev = &alvium->i2c_client->dev; 1353 int ret; 1354 1355 ret = alvium_write_hshake(alvium, REG_BCRM_HUE_RW, (u64)val); 1356 if (ret) { 1357 dev_err(dev, "Fail to set hue value reg\n"); 1358 return ret; 1359 } 1360 1361 return 0; 1362 } 1363 1364 static int alvium_set_ctrl_contrast(struct alvium_dev *alvium, int val) 1365 { 1366 struct device *dev = &alvium->i2c_client->dev; 1367 int ret; 1368 1369 ret = alvium_write_hshake(alvium, REG_BCRM_CONTRAST_VALUE_RW, (u64)val); 1370 if (ret) { 1371 dev_err(dev, "Fail to set contrast value reg\n"); 1372 return ret; 1373 } 1374 1375 return 0; 1376 } 1377 1378 static int alvium_set_ctrl_saturation(struct alvium_dev *alvium, int val) 1379 { 1380 struct device *dev = &alvium->i2c_client->dev; 1381 int ret; 1382 1383 ret = alvium_write_hshake(alvium, REG_BCRM_SATURATION_RW, (u64)val); 1384 if (ret) { 1385 dev_err(dev, "Fail to set contrast value reg\n"); 1386 return ret; 1387 } 1388 1389 return 0; 1390 } 1391 1392 static int alvium_set_ctrl_gamma(struct alvium_dev *alvium, int val) 1393 { 1394 struct device *dev = &alvium->i2c_client->dev; 1395 int ret; 1396 1397 ret = alvium_write_hshake(alvium, REG_BCRM_GAMMA_RW, (u64)val); 1398 if (ret) { 1399 dev_err(dev, "Fail to set gamma value reg\n"); 1400 return ret; 1401 } 1402 1403 return 0; 1404 } 1405 1406 static int alvium_set_ctrl_sharpness(struct alvium_dev *alvium, int val) 1407 { 1408 struct device *dev = &alvium->i2c_client->dev; 1409 int ret; 1410 1411 ret = alvium_write_hshake(alvium, REG_BCRM_SHARPNESS_RW, (u64)val); 1412 if (ret) { 1413 dev_err(dev, "Fail to set sharpness value reg\n"); 1414 return ret; 1415 } 1416 1417 return 0; 1418 } 1419 1420 static int alvium_set_ctrl_hflip(struct alvium_dev *alvium, int val) 1421 { 1422 struct device *dev = &alvium->i2c_client->dev; 1423 int ret; 1424 1425 ret = alvium_write_hshake(alvium, REG_BCRM_IMG_REVERSE_X_RW, (u64)val); 1426 if (ret) { 1427 dev_err(dev, "Fail to set reverse_x value reg\n"); 1428 return ret; 1429 } 1430 1431 return 0; 1432 } 1433 1434 static int alvium_set_ctrl_vflip(struct alvium_dev *alvium, int val) 1435 { 1436 struct device *dev = &alvium->i2c_client->dev; 1437 int ret; 1438 1439 ret = alvium_write_hshake(alvium, REG_BCRM_IMG_REVERSE_Y_RW, (u64)val); 1440 if (ret) { 1441 dev_err(dev, "Fail to set reverse_y value reg\n"); 1442 return ret; 1443 } 1444 1445 return 0; 1446 } 1447 1448 static int alvium_get_hw_features_params(struct alvium_dev *alvium) 1449 { 1450 struct device *dev = &alvium->i2c_client->dev; 1451 int ret; 1452 1453 ret = alvium_get_csi_clk_params(alvium); 1454 if (ret) { 1455 dev_err(dev, "Fail to read min/max csi clock regs\n"); 1456 return ret; 1457 } 1458 1459 ret = alvium_get_img_width_params(alvium); 1460 if (ret) { 1461 dev_err(dev, "Fail to read img width regs\n"); 1462 return ret; 1463 } 1464 1465 ret = alvium_get_img_height_params(alvium); 1466 if (ret) { 1467 dev_err(dev, "Fail to read img height regs\n"); 1468 return ret; 1469 } 1470 1471 ret = alvium_get_offx_params(alvium); 1472 if (ret) { 1473 dev_err(dev, "Fail to read offx regs\n"); 1474 return ret; 1475 } 1476 1477 ret = alvium_get_offy_params(alvium); 1478 if (ret) { 1479 dev_err(dev, "Fail to read offy regs\n"); 1480 return ret; 1481 } 1482 1483 ret = alvium_get_gain_params(alvium); 1484 if (ret) { 1485 dev_err(dev, "Fail to read gain regs\n"); 1486 return ret; 1487 } 1488 1489 ret = alvium_get_exposure_params(alvium); 1490 if (ret) { 1491 dev_err(dev, "Fail to read min/max exp regs\n"); 1492 return ret; 1493 } 1494 1495 ret = alvium_get_red_balance_ratio_params(alvium); 1496 if (ret) { 1497 dev_err(dev, "Fail to read red balance ratio regs\n"); 1498 return ret; 1499 } 1500 1501 ret = alvium_get_blue_balance_ratio_params(alvium); 1502 if (ret) { 1503 dev_err(dev, "Fail to read blue balance ratio regs\n"); 1504 return ret; 1505 } 1506 1507 ret = alvium_get_hue_params(alvium); 1508 if (ret) { 1509 dev_err(dev, "Fail to read hue regs\n"); 1510 return ret; 1511 } 1512 1513 ret = alvium_get_contrast_params(alvium); 1514 if (ret) { 1515 dev_err(dev, "Fail to read contrast regs\n"); 1516 return ret; 1517 } 1518 1519 ret = alvium_get_saturation_params(alvium); 1520 if (ret) { 1521 dev_err(dev, "Fail to read saturation regs\n"); 1522 return ret; 1523 } 1524 1525 ret = alvium_get_black_lvl_params(alvium); 1526 if (ret) { 1527 dev_err(dev, "Fail to read black lvl regs\n"); 1528 return ret; 1529 } 1530 1531 ret = alvium_get_gamma_params(alvium); 1532 if (ret) { 1533 dev_err(dev, "Fail to read gamma regs\n"); 1534 return ret; 1535 } 1536 1537 ret = alvium_get_sharpness_params(alvium); 1538 if (ret) { 1539 dev_err(dev, "Fail to read sharpness regs\n"); 1540 return ret; 1541 } 1542 1543 return 0; 1544 } 1545 1546 static int alvium_get_hw_info(struct alvium_dev *alvium) 1547 { 1548 struct device *dev = &alvium->i2c_client->dev; 1549 int ret; 1550 1551 ret = alvium_get_bcrm_vers(alvium); 1552 if (ret) { 1553 dev_err(dev, "Fail to read bcrm version reg\n"); 1554 return ret; 1555 } 1556 1557 ret = alvium_get_bcrm_addr(alvium); 1558 if (ret) { 1559 dev_err(dev, "Fail to bcrm address reg\n"); 1560 return ret; 1561 } 1562 1563 ret = alvium_get_fw_version(alvium); 1564 if (ret) { 1565 dev_err(dev, "Fail to read fw version reg\n"); 1566 return ret; 1567 } 1568 1569 ret = alvium_get_host_supp_csi_lanes(alvium); 1570 if (ret) { 1571 dev_err(dev, "Fail to read host supported csi lanes reg\n"); 1572 return ret; 1573 } 1574 1575 ret = alvium_get_feat_inq(alvium); 1576 if (ret) { 1577 dev_err(dev, "Fail to read bcrm feature inquiry reg\n"); 1578 return ret; 1579 } 1580 1581 ret = alvium_get_hw_features_params(alvium); 1582 if (ret) { 1583 dev_err(dev, "Fail to read features params regs\n"); 1584 return ret; 1585 } 1586 1587 ret = alvium_get_avail_mipi_data_format(alvium); 1588 if (ret) { 1589 dev_err(dev, "Fail to read available mipi data formats reg\n"); 1590 return ret; 1591 } 1592 1593 ret = alvium_get_avail_bayer(alvium); 1594 if (ret) { 1595 dev_err(dev, "Fail to read available Bayer patterns reg\n"); 1596 return ret; 1597 } 1598 1599 ret = alvium_get_mode(alvium); 1600 if (ret) { 1601 dev_err(dev, "Fail to get current mode reg\n"); 1602 return ret; 1603 } 1604 1605 return 0; 1606 } 1607 1608 static int alvium_hw_init(struct alvium_dev *alvium) 1609 { 1610 struct device *dev = &alvium->i2c_client->dev; 1611 int ret; 1612 1613 /* Set Alvium BCM mode*/ 1614 ret = alvium_set_bcm_mode(alvium); 1615 if (ret) { 1616 dev_err(dev, "Fail to set BCM mode\n"); 1617 return ret; 1618 } 1619 1620 ret = alvium_set_csi_lanes(alvium); 1621 if (ret) { 1622 dev_err(dev, "Fail to set csi lanes\n"); 1623 return ret; 1624 } 1625 1626 ret = alvium_set_csi_clk(alvium); 1627 if (ret) { 1628 dev_err(dev, "Fail to set csi clk\n"); 1629 return ret; 1630 } 1631 1632 ret = alvium_set_lp2hs_delay(alvium); 1633 if (ret) { 1634 dev_err(dev, "Fail to set lp2hs reg\n"); 1635 return ret; 1636 } 1637 1638 return 0; 1639 } 1640 1641 /* --------------- Subdev Operations --------------- */ 1642 static int alvium_s_frame_interval(struct v4l2_subdev *sd, 1643 struct v4l2_subdev_state *sd_state, 1644 struct v4l2_subdev_frame_interval *fi) 1645 { 1646 struct alvium_dev *alvium = sd_to_alvium(sd); 1647 struct device *dev = &alvium->i2c_client->dev; 1648 u64 req_fr, min_fr, max_fr; 1649 struct v4l2_fract *interval; 1650 int ret; 1651 1652 if (alvium->streaming) 1653 return -EBUSY; 1654 1655 if (fi->interval.denominator == 0) 1656 return -EINVAL; 1657 1658 ret = alvium_get_frame_interval(alvium, &min_fr, &max_fr); 1659 if (ret) { 1660 dev_err(dev, "Fail to get frame interval\n"); 1661 return ret; 1662 } 1663 1664 dev_dbg(dev, "fi->interval.numerator = %d\n", 1665 fi->interval.numerator); 1666 dev_dbg(dev, "fi->interval.denominator = %d\n", 1667 fi->interval.denominator); 1668 1669 req_fr = (u64)((fi->interval.denominator * USEC_PER_SEC) / 1670 fi->interval.numerator); 1671 req_fr = clamp(req_fr, min_fr, max_fr); 1672 1673 interval = v4l2_subdev_state_get_interval(sd_state, 0); 1674 1675 interval->numerator = fi->interval.numerator; 1676 interval->denominator = fi->interval.denominator; 1677 1678 if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE) 1679 return 0; 1680 1681 return alvium_set_frame_rate(alvium, req_fr); 1682 } 1683 1684 static int alvium_enum_mbus_code(struct v4l2_subdev *sd, 1685 struct v4l2_subdev_state *sd_state, 1686 struct v4l2_subdev_mbus_code_enum *code) 1687 { 1688 struct alvium_dev *alvium = sd_to_alvium(sd); 1689 1690 if (code->index >= alvium->alvium_csi2_fmt_n) 1691 return -EINVAL; 1692 1693 code->code = alvium->alvium_csi2_fmt[code->index].code; 1694 1695 return 0; 1696 } 1697 1698 static const struct alvium_pixfmt * 1699 alvium_code_to_pixfmt(struct alvium_dev *alvium, u32 code) 1700 { 1701 unsigned int i; 1702 1703 for (i = 0; alvium->alvium_csi2_fmt[i].code; ++i) 1704 if (alvium->alvium_csi2_fmt[i].code == code) 1705 return &alvium->alvium_csi2_fmt[i]; 1706 1707 return &alvium->alvium_csi2_fmt[0]; 1708 } 1709 1710 static int alvium_set_mode(struct alvium_dev *alvium, 1711 struct v4l2_subdev_state *state) 1712 { 1713 struct v4l2_mbus_framefmt *fmt; 1714 struct v4l2_rect *crop; 1715 int ret; 1716 1717 crop = v4l2_subdev_state_get_crop(state, 0); 1718 fmt = v4l2_subdev_state_get_format(state, 0); 1719 1720 v4l_bound_align_image(&fmt->width, alvium->img_min_width, 1721 alvium->img_max_width, 0, 1722 &fmt->height, alvium->img_min_height, 1723 alvium->img_max_height, 0, 0); 1724 1725 /* alvium don't accept negative crop left/top */ 1726 crop->left = clamp((u32)max(0, crop->left), alvium->min_offx, 1727 (u32)(alvium->img_max_width - fmt->width)); 1728 crop->top = clamp((u32)max(0, crop->top), alvium->min_offy, 1729 (u32)(alvium->img_max_height - fmt->height)); 1730 1731 ret = alvium_set_img_width(alvium, fmt->width); 1732 if (ret) 1733 return ret; 1734 1735 ret = alvium_set_img_height(alvium, fmt->height); 1736 if (ret) 1737 return ret; 1738 1739 ret = alvium_set_img_offx(alvium, crop->left); 1740 if (ret) 1741 return ret; 1742 1743 ret = alvium_set_img_offy(alvium, crop->top); 1744 if (ret) 1745 return ret; 1746 1747 return 0; 1748 } 1749 1750 static int alvium_set_framefmt(struct alvium_dev *alvium, 1751 struct v4l2_mbus_framefmt *format) 1752 { 1753 struct device *dev = &alvium->i2c_client->dev; 1754 const struct alvium_pixfmt *alvium_csi2_fmt; 1755 int ret = 0; 1756 1757 alvium_csi2_fmt = alvium_code_to_pixfmt(alvium, format->code); 1758 1759 ret = alvium_set_mipi_fmt(alvium, alvium_csi2_fmt); 1760 if (ret) 1761 return ret; 1762 1763 if (alvium_csi2_fmt->is_raw) { 1764 ret = alvium_set_bayer_pattern(alvium, alvium_csi2_fmt); 1765 if (ret) 1766 return ret; 1767 } 1768 1769 dev_dbg(dev, "start: %s, mipi_fmt_regval regval = 0x%llx", 1770 __func__, alvium_csi2_fmt->mipi_fmt_regval); 1771 1772 return ret; 1773 } 1774 1775 static int alvium_s_stream(struct v4l2_subdev *sd, int enable) 1776 { 1777 struct alvium_dev *alvium = sd_to_alvium(sd); 1778 struct i2c_client *client = v4l2_get_subdevdata(&alvium->sd); 1779 struct v4l2_mbus_framefmt *fmt; 1780 struct v4l2_subdev_state *state; 1781 int ret = 0; 1782 1783 state = v4l2_subdev_lock_and_get_active_state(sd); 1784 1785 if (enable) { 1786 ret = pm_runtime_resume_and_get(&client->dev); 1787 if (ret < 0) 1788 goto out; 1789 1790 ret = __v4l2_ctrl_handler_setup(&alvium->ctrls.handler); 1791 if (ret) 1792 goto out; 1793 1794 ret = alvium_set_mode(alvium, state); 1795 if (ret) 1796 goto out; 1797 1798 fmt = v4l2_subdev_state_get_format(state, 0); 1799 ret = alvium_set_framefmt(alvium, fmt); 1800 if (ret) 1801 goto out; 1802 1803 ret = alvium_set_stream_mipi(alvium, enable); 1804 if (ret) 1805 goto out; 1806 1807 } else { 1808 alvium_set_stream_mipi(alvium, enable); 1809 pm_runtime_mark_last_busy(&client->dev); 1810 pm_runtime_put_autosuspend(&client->dev); 1811 } 1812 1813 alvium->streaming = !!enable; 1814 v4l2_subdev_unlock_state(state); 1815 1816 return 0; 1817 1818 out: 1819 pm_runtime_put(&client->dev); 1820 v4l2_subdev_unlock_state(state); 1821 return ret; 1822 } 1823 1824 static int alvium_init_state(struct v4l2_subdev *sd, 1825 struct v4l2_subdev_state *state) 1826 { 1827 struct alvium_dev *alvium = sd_to_alvium(sd); 1828 struct alvium_mode *mode = &alvium->mode; 1829 struct v4l2_fract *interval; 1830 struct v4l2_subdev_format sd_fmt = { 1831 .which = V4L2_SUBDEV_FORMAT_TRY, 1832 .format = alvium_csi2_default_fmt, 1833 }; 1834 struct v4l2_subdev_crop sd_crop = { 1835 .which = V4L2_SUBDEV_FORMAT_TRY, 1836 .rect = { 1837 .left = mode->crop.left, 1838 .top = mode->crop.top, 1839 .width = mode->crop.width, 1840 .height = mode->crop.height, 1841 }, 1842 }; 1843 1844 *v4l2_subdev_state_get_crop(state, 0) = sd_crop.rect; 1845 *v4l2_subdev_state_get_format(state, 0) = sd_fmt.format; 1846 1847 /* Setup initial frame interval*/ 1848 interval = v4l2_subdev_state_get_interval(state, 0); 1849 interval->numerator = 1; 1850 interval->denominator = ALVIUM_DEFAULT_FR_HZ; 1851 1852 return 0; 1853 } 1854 1855 static int alvium_set_fmt(struct v4l2_subdev *sd, 1856 struct v4l2_subdev_state *sd_state, 1857 struct v4l2_subdev_format *format) 1858 { 1859 struct alvium_dev *alvium = sd_to_alvium(sd); 1860 const struct alvium_pixfmt *alvium_csi2_fmt; 1861 struct v4l2_mbus_framefmt *fmt; 1862 struct v4l2_rect *crop; 1863 1864 fmt = v4l2_subdev_state_get_format(sd_state, 0); 1865 crop = v4l2_subdev_state_get_crop(sd_state, 0); 1866 1867 v4l_bound_align_image(&format->format.width, alvium->img_min_width, 1868 alvium->img_max_width, 0, 1869 &format->format.height, alvium->img_min_height, 1870 alvium->img_max_height, 0, 0); 1871 1872 /* Adjust left and top to prevent roll over sensor area */ 1873 crop->left = clamp((u32)crop->left, (u32)0, 1874 (alvium->img_max_width - fmt->width)); 1875 crop->top = clamp((u32)crop->top, (u32)0, 1876 (alvium->img_max_height - fmt->height)); 1877 1878 /* Set also the crop width and height when set a new fmt */ 1879 crop->width = fmt->width; 1880 crop->height = fmt->height; 1881 1882 alvium_csi2_fmt = alvium_code_to_pixfmt(alvium, format->format.code); 1883 fmt->code = alvium_csi2_fmt->code; 1884 1885 *fmt = format->format; 1886 1887 return 0; 1888 } 1889 1890 static int alvium_set_selection(struct v4l2_subdev *sd, 1891 struct v4l2_subdev_state *sd_state, 1892 struct v4l2_subdev_selection *sel) 1893 { 1894 struct alvium_dev *alvium = sd_to_alvium(sd); 1895 struct v4l2_mbus_framefmt *fmt; 1896 struct v4l2_rect *crop; 1897 1898 if (sel->target != V4L2_SEL_TGT_CROP) 1899 return -EINVAL; 1900 1901 crop = v4l2_subdev_state_get_crop(sd_state, 0); 1902 fmt = v4l2_subdev_state_get_format(sd_state, 0); 1903 1904 /* 1905 * Alvium can only shift the origin of the img 1906 * then we accept only value with the same value of the actual fmt 1907 */ 1908 if (sel->r.width != fmt->width) 1909 sel->r.width = fmt->width; 1910 1911 if (sel->r.height != fmt->height) 1912 sel->r.height = fmt->height; 1913 1914 /* alvium don't accept negative crop left/top */ 1915 crop->left = clamp((u32)max(0, sel->r.left), alvium->min_offx, 1916 alvium->img_max_width - sel->r.width); 1917 crop->top = clamp((u32)max(0, sel->r.top), alvium->min_offy, 1918 alvium->img_max_height - sel->r.height); 1919 1920 sel->r = *crop; 1921 1922 return 0; 1923 } 1924 1925 static int alvium_get_selection(struct v4l2_subdev *sd, 1926 struct v4l2_subdev_state *sd_state, 1927 struct v4l2_subdev_selection *sel) 1928 { 1929 struct alvium_dev *alvium = sd_to_alvium(sd); 1930 1931 switch (sel->target) { 1932 /* Current cropping area */ 1933 case V4L2_SEL_TGT_CROP: 1934 sel->r = *v4l2_subdev_state_get_crop(sd_state, 0); 1935 break; 1936 /* Cropping bounds */ 1937 case V4L2_SEL_TGT_NATIVE_SIZE: 1938 sel->r.top = 0; 1939 sel->r.left = 0; 1940 sel->r.width = alvium->img_max_width; 1941 sel->r.height = alvium->img_max_height; 1942 break; 1943 /* Default cropping area */ 1944 case V4L2_SEL_TGT_CROP_BOUNDS: 1945 case V4L2_SEL_TGT_CROP_DEFAULT: 1946 sel->r.top = alvium->min_offy; 1947 sel->r.left = alvium->min_offx; 1948 sel->r.width = alvium->img_max_width; 1949 sel->r.height = alvium->img_max_height; 1950 break; 1951 default: 1952 return -EINVAL; 1953 } 1954 1955 return 0; 1956 } 1957 1958 static int alvium_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 1959 { 1960 struct v4l2_subdev *sd = ctrl_to_sd(ctrl); 1961 struct alvium_dev *alvium = sd_to_alvium(sd); 1962 int val; 1963 1964 switch (ctrl->id) { 1965 case V4L2_CID_GAIN: 1966 val = alvium_get_gain(alvium); 1967 if (val < 0) 1968 return val; 1969 alvium->ctrls.gain->val = val; 1970 break; 1971 case V4L2_CID_EXPOSURE: 1972 val = alvium_get_exposure(alvium); 1973 if (val < 0) 1974 return val; 1975 alvium->ctrls.exposure->val = val; 1976 break; 1977 } 1978 1979 return 0; 1980 } 1981 1982 static int alvium_s_ctrl(struct v4l2_ctrl *ctrl) 1983 { 1984 struct v4l2_subdev *sd = ctrl_to_sd(ctrl); 1985 struct alvium_dev *alvium = sd_to_alvium(sd); 1986 struct i2c_client *client = v4l2_get_subdevdata(&alvium->sd); 1987 int ret; 1988 1989 /* 1990 * Applying V4L2 control value only happens 1991 * when power is up for streaming 1992 */ 1993 if (!pm_runtime_get_if_in_use(&client->dev)) 1994 return 0; 1995 1996 switch (ctrl->id) { 1997 case V4L2_CID_GAIN: 1998 ret = alvium_set_ctrl_gain(alvium, ctrl->val); 1999 break; 2000 case V4L2_CID_AUTOGAIN: 2001 ret = alvium_set_ctrl_auto_gain(alvium, ctrl->val); 2002 break; 2003 case V4L2_CID_EXPOSURE: 2004 ret = alvium_set_ctrl_exposure(alvium, ctrl->val); 2005 break; 2006 case V4L2_CID_EXPOSURE_AUTO: 2007 ret = alvium_set_ctrl_auto_exposure(alvium, ctrl->val); 2008 break; 2009 case V4L2_CID_RED_BALANCE: 2010 ret = alvium_set_ctrl_red_balance_ratio(alvium, ctrl->val); 2011 break; 2012 case V4L2_CID_BLUE_BALANCE: 2013 ret = alvium_set_ctrl_blue_balance_ratio(alvium, ctrl->val); 2014 break; 2015 case V4L2_CID_AUTO_WHITE_BALANCE: 2016 ret = alvium_set_ctrl_awb(alvium, ctrl->val); 2017 break; 2018 case V4L2_CID_HUE: 2019 ret = alvium_set_ctrl_hue(alvium, ctrl->val); 2020 break; 2021 case V4L2_CID_CONTRAST: 2022 ret = alvium_set_ctrl_contrast(alvium, ctrl->val); 2023 break; 2024 case V4L2_CID_SATURATION: 2025 ret = alvium_set_ctrl_saturation(alvium, ctrl->val); 2026 break; 2027 case V4L2_CID_GAMMA: 2028 ret = alvium_set_ctrl_gamma(alvium, ctrl->val); 2029 break; 2030 case V4L2_CID_SHARPNESS: 2031 ret = alvium_set_ctrl_sharpness(alvium, ctrl->val); 2032 break; 2033 case V4L2_CID_HFLIP: 2034 ret = alvium_set_ctrl_hflip(alvium, ctrl->val); 2035 break; 2036 case V4L2_CID_VFLIP: 2037 ret = alvium_set_ctrl_vflip(alvium, ctrl->val); 2038 break; 2039 default: 2040 ret = -EINVAL; 2041 break; 2042 } 2043 2044 pm_runtime_put(&client->dev); 2045 2046 return ret; 2047 } 2048 2049 static const struct v4l2_ctrl_ops alvium_ctrl_ops = { 2050 .g_volatile_ctrl = alvium_g_volatile_ctrl, 2051 .s_ctrl = alvium_s_ctrl, 2052 }; 2053 2054 static int alvium_ctrl_init(struct alvium_dev *alvium) 2055 { 2056 const struct v4l2_ctrl_ops *ops = &alvium_ctrl_ops; 2057 struct alvium_ctrls *ctrls = &alvium->ctrls; 2058 struct v4l2_ctrl_handler *hdl = &ctrls->handler; 2059 struct v4l2_fwnode_device_properties props; 2060 int ret; 2061 2062 v4l2_ctrl_handler_init(hdl, 32); 2063 2064 /* Pixel rate is fixed */ 2065 ctrls->pixel_rate = v4l2_ctrl_new_std(hdl, ops, 2066 V4L2_CID_PIXEL_RATE, 0, 2067 ALVIUM_DEFAULT_PIXEL_RATE_MHZ, 1, 2068 ALVIUM_DEFAULT_PIXEL_RATE_MHZ); 2069 ctrls->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY; 2070 2071 /* Link freq is fixed */ 2072 ctrls->link_freq = v4l2_ctrl_new_int_menu(hdl, ops, 2073 V4L2_CID_LINK_FREQ, 2074 0, 0, &alvium->link_freq); 2075 ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; 2076 2077 /* Auto/manual white balance */ 2078 if (alvium->avail_ft.auto_whiteb) { 2079 ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops, 2080 V4L2_CID_AUTO_WHITE_BALANCE, 2081 0, 1, 1, 1); 2082 v4l2_ctrl_auto_cluster(3, &ctrls->auto_wb, 0, false); 2083 } 2084 2085 ctrls->blue_balance = v4l2_ctrl_new_std(hdl, ops, 2086 V4L2_CID_BLUE_BALANCE, 2087 alvium->min_bbalance, 2088 alvium->max_bbalance, 2089 alvium->inc_bbalance, 2090 alvium->dft_bbalance); 2091 ctrls->red_balance = v4l2_ctrl_new_std(hdl, ops, 2092 V4L2_CID_RED_BALANCE, 2093 alvium->min_rbalance, 2094 alvium->max_rbalance, 2095 alvium->inc_rbalance, 2096 alvium->dft_rbalance); 2097 2098 /* Auto/manual exposure */ 2099 if (alvium->avail_ft.auto_exp) { 2100 ctrls->auto_exp = 2101 v4l2_ctrl_new_std_menu(hdl, ops, 2102 V4L2_CID_EXPOSURE_AUTO, 2103 V4L2_EXPOSURE_MANUAL, 0, 2104 V4L2_EXPOSURE_AUTO); 2105 v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp, 1, true); 2106 } 2107 2108 ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, 2109 V4L2_CID_EXPOSURE, 2110 alvium->min_exp, 2111 alvium->max_exp, 2112 alvium->inc_exp, 2113 alvium->dft_exp); 2114 ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE; 2115 2116 /* Auto/manual gain */ 2117 if (alvium->avail_ft.auto_gain) { 2118 ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops, 2119 V4L2_CID_AUTOGAIN, 2120 0, 1, 1, 1); 2121 v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true); 2122 } 2123 2124 if (alvium->avail_ft.gain) { 2125 ctrls->gain = v4l2_ctrl_new_std(hdl, ops, 2126 V4L2_CID_GAIN, 2127 alvium->min_gain, 2128 alvium->max_gain, 2129 alvium->inc_gain, 2130 alvium->dft_gain); 2131 ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE; 2132 } 2133 2134 if (alvium->avail_ft.sat) 2135 ctrls->saturation = v4l2_ctrl_new_std(hdl, ops, 2136 V4L2_CID_SATURATION, 2137 alvium->min_sat, 2138 alvium->max_sat, 2139 alvium->inc_sat, 2140 alvium->dft_sat); 2141 2142 if (alvium->avail_ft.hue) 2143 ctrls->hue = v4l2_ctrl_new_std(hdl, ops, 2144 V4L2_CID_HUE, 2145 alvium->min_hue, 2146 alvium->max_hue, 2147 alvium->inc_hue, 2148 alvium->dft_hue); 2149 2150 if (alvium->avail_ft.contrast) 2151 ctrls->contrast = v4l2_ctrl_new_std(hdl, ops, 2152 V4L2_CID_CONTRAST, 2153 alvium->min_contrast, 2154 alvium->max_contrast, 2155 alvium->inc_contrast, 2156 alvium->dft_contrast); 2157 2158 if (alvium->avail_ft.gamma) 2159 ctrls->gamma = v4l2_ctrl_new_std(hdl, ops, 2160 V4L2_CID_GAMMA, 2161 alvium->min_gamma, 2162 alvium->max_gamma, 2163 alvium->inc_gamma, 2164 alvium->dft_gamma); 2165 2166 if (alvium->avail_ft.sharp) 2167 ctrls->sharpness = v4l2_ctrl_new_std(hdl, ops, 2168 V4L2_CID_SHARPNESS, 2169 alvium->min_sharp, 2170 alvium->max_sharp, 2171 alvium->inc_sharp, 2172 alvium->dft_sharp); 2173 2174 if (alvium->avail_ft.rev_x) 2175 ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, 2176 V4L2_CID_HFLIP, 2177 0, 1, 1, 0); 2178 2179 if (alvium->avail_ft.rev_y) 2180 ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, 2181 V4L2_CID_VFLIP, 2182 0, 1, 1, 0); 2183 2184 if (hdl->error) { 2185 ret = hdl->error; 2186 goto free_ctrls; 2187 } 2188 2189 ret = v4l2_fwnode_device_parse(&alvium->i2c_client->dev, &props); 2190 if (ret) 2191 goto free_ctrls; 2192 2193 ret = v4l2_ctrl_new_fwnode_properties(hdl, ops, &props); 2194 if (ret) 2195 goto free_ctrls; 2196 2197 alvium->sd.ctrl_handler = hdl; 2198 return 0; 2199 2200 free_ctrls: 2201 v4l2_ctrl_handler_free(hdl); 2202 return ret; 2203 } 2204 2205 static const struct v4l2_subdev_core_ops alvium_core_ops = { 2206 .log_status = v4l2_ctrl_subdev_log_status, 2207 .subscribe_event = v4l2_ctrl_subdev_subscribe_event, 2208 .unsubscribe_event = v4l2_event_subdev_unsubscribe, 2209 }; 2210 2211 static const struct v4l2_subdev_video_ops alvium_video_ops = { 2212 .s_stream = alvium_s_stream, 2213 }; 2214 2215 static const struct v4l2_subdev_pad_ops alvium_pad_ops = { 2216 .enum_mbus_code = alvium_enum_mbus_code, 2217 .get_fmt = v4l2_subdev_get_fmt, 2218 .set_fmt = alvium_set_fmt, 2219 .get_selection = alvium_get_selection, 2220 .set_selection = alvium_set_selection, 2221 .get_frame_interval = v4l2_subdev_get_frame_interval, 2222 .set_frame_interval = alvium_s_frame_interval, 2223 }; 2224 2225 static const struct v4l2_subdev_internal_ops alvium_internal_ops = { 2226 .init_state = alvium_init_state, 2227 }; 2228 2229 static const struct v4l2_subdev_ops alvium_subdev_ops = { 2230 .core = &alvium_core_ops, 2231 .pad = &alvium_pad_ops, 2232 .video = &alvium_video_ops, 2233 }; 2234 2235 static int alvium_subdev_init(struct alvium_dev *alvium) 2236 { 2237 struct i2c_client *client = alvium->i2c_client; 2238 struct device *dev = &alvium->i2c_client->dev; 2239 struct v4l2_subdev *sd = &alvium->sd; 2240 int ret; 2241 2242 /* Setup the initial mode */ 2243 alvium->mode.fmt = alvium_csi2_default_fmt; 2244 alvium->mode.width = alvium_csi2_default_fmt.width; 2245 alvium->mode.height = alvium_csi2_default_fmt.height; 2246 alvium->mode.crop.left = alvium->min_offx; 2247 alvium->mode.crop.top = alvium->min_offy; 2248 alvium->mode.crop.width = alvium_csi2_default_fmt.width; 2249 alvium->mode.crop.height = alvium_csi2_default_fmt.height; 2250 2251 /* init alvium sd */ 2252 v4l2_i2c_subdev_init(sd, client, &alvium_subdev_ops); 2253 2254 sd->internal_ops = &alvium_internal_ops; 2255 sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_HAS_DEVNODE; 2256 alvium->pad.flags = MEDIA_PAD_FL_SOURCE; 2257 sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; 2258 2259 ret = media_entity_pads_init(&sd->entity, 1, &alvium->pad); 2260 if (ret) { 2261 dev_err(dev, "Could not register media entity\n"); 2262 return ret; 2263 } 2264 2265 ret = alvium_ctrl_init(alvium); 2266 if (ret) { 2267 dev_err(dev, "Control initialization error %d\n", ret); 2268 goto entity_cleanup; 2269 } 2270 2271 alvium->sd.state_lock = alvium->ctrls.handler.lock; 2272 2273 ret = v4l2_subdev_init_finalize(sd); 2274 if (ret < 0) { 2275 dev_err(dev, "subdev initialization error %d\n", ret); 2276 goto err_ctrls; 2277 } 2278 2279 return 0; 2280 2281 err_ctrls: 2282 v4l2_ctrl_handler_free(&alvium->ctrls.handler); 2283 entity_cleanup: 2284 media_entity_cleanup(&alvium->sd.entity); 2285 return ret; 2286 } 2287 2288 static void alvium_subdev_cleanup(struct alvium_dev *alvium) 2289 { 2290 v4l2_fwnode_endpoint_free(&alvium->ep); 2291 v4l2_subdev_cleanup(&alvium->sd); 2292 media_entity_cleanup(&alvium->sd.entity); 2293 v4l2_ctrl_handler_free(&alvium->ctrls.handler); 2294 } 2295 2296 static int alvium_get_dt_data(struct alvium_dev *alvium) 2297 { 2298 struct device *dev = &alvium->i2c_client->dev; 2299 struct fwnode_handle *fwnode = dev_fwnode(dev); 2300 struct fwnode_handle *endpoint; 2301 2302 if (!fwnode) 2303 return -EINVAL; 2304 2305 /* Only CSI2 is supported for now: */ 2306 alvium->ep.bus_type = V4L2_MBUS_CSI2_DPHY; 2307 2308 endpoint = fwnode_graph_get_endpoint_by_id(fwnode, 0, 0, 0); 2309 if (!endpoint) { 2310 dev_err(dev, "endpoint node not found\n"); 2311 return -EINVAL; 2312 } 2313 2314 if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &alvium->ep)) { 2315 dev_err(dev, "could not parse endpoint\n"); 2316 goto error_out; 2317 } 2318 2319 if (!alvium->ep.nr_of_link_frequencies) { 2320 dev_err(dev, "no link frequencies defined"); 2321 goto error_out; 2322 } 2323 2324 return 0; 2325 2326 error_out: 2327 v4l2_fwnode_endpoint_free(&alvium->ep); 2328 fwnode_handle_put(endpoint); 2329 2330 return -EINVAL; 2331 } 2332 2333 static int alvium_set_power(struct alvium_dev *alvium, bool on) 2334 { 2335 int ret; 2336 2337 if (!on) 2338 return regulator_disable(alvium->reg_vcc); 2339 2340 ret = regulator_enable(alvium->reg_vcc); 2341 if (ret) 2342 return ret; 2343 2344 /* alvium boot time 7s */ 2345 msleep(7000); 2346 return 0; 2347 } 2348 2349 static int alvium_runtime_resume(struct device *dev) 2350 { 2351 struct v4l2_subdev *sd = dev_get_drvdata(dev); 2352 struct alvium_dev *alvium = sd_to_alvium(sd); 2353 int ret; 2354 2355 ret = alvium_set_power(alvium, true); 2356 if (ret) 2357 return ret; 2358 2359 ret = alvium_hw_init(alvium); 2360 if (ret) { 2361 alvium_set_power(alvium, false); 2362 return ret; 2363 } 2364 2365 return 0; 2366 } 2367 2368 static int alvium_runtime_suspend(struct device *dev) 2369 { 2370 struct v4l2_subdev *sd = dev_get_drvdata(dev); 2371 struct alvium_dev *alvium = sd_to_alvium(sd); 2372 2373 alvium_set_power(alvium, false); 2374 2375 return 0; 2376 } 2377 2378 static const struct dev_pm_ops alvium_pm_ops = { 2379 RUNTIME_PM_OPS(alvium_runtime_suspend, alvium_runtime_resume, NULL) 2380 }; 2381 2382 static int alvium_probe(struct i2c_client *client) 2383 { 2384 struct device *dev = &client->dev; 2385 struct alvium_dev *alvium; 2386 int ret; 2387 2388 alvium = devm_kzalloc(dev, sizeof(*alvium), GFP_KERNEL); 2389 if (!alvium) 2390 return -ENOMEM; 2391 2392 alvium->i2c_client = client; 2393 2394 alvium->regmap = devm_cci_regmap_init_i2c(client, 16); 2395 if (IS_ERR(alvium->regmap)) 2396 return PTR_ERR(alvium->regmap); 2397 2398 ret = alvium_get_dt_data(alvium); 2399 if (ret) 2400 return ret; 2401 2402 alvium->reg_vcc = devm_regulator_get_optional(dev, "vcc-ext-in"); 2403 if (IS_ERR(alvium->reg_vcc)) 2404 return dev_err_probe(dev, PTR_ERR(alvium->reg_vcc), 2405 "no vcc-ext-in regulator provided\n"); 2406 2407 ret = alvium_set_power(alvium, true); 2408 if (ret) 2409 goto err_powerdown; 2410 2411 if (!alvium_is_alive(alvium)) { 2412 ret = -ENODEV; 2413 dev_err_probe(dev, ret, "Device detection failed\n"); 2414 goto err_powerdown; 2415 } 2416 2417 ret = alvium_get_hw_info(alvium); 2418 if (ret) { 2419 dev_err_probe(dev, ret, "get_hw_info fail\n"); 2420 goto err_powerdown; 2421 } 2422 2423 ret = alvium_hw_init(alvium); 2424 if (ret) { 2425 dev_err_probe(dev, ret, "hw_init fail\n"); 2426 goto err_powerdown; 2427 } 2428 2429 ret = alvium_setup_mipi_fmt(alvium); 2430 if (ret) { 2431 dev_err_probe(dev, ret, "setup_mipi_fmt fail\n"); 2432 goto err_powerdown; 2433 } 2434 2435 /* 2436 * Enable runtime PM without autosuspend: 2437 * 2438 * Don't use pm autosuspend (alvium have ~7s boot time). 2439 * Alvium has been powered manually: 2440 * - mark it as active 2441 * - increase the usage count without resuming the device. 2442 */ 2443 pm_runtime_set_active(dev); 2444 pm_runtime_get_noresume(dev); 2445 pm_runtime_enable(dev); 2446 2447 /* Initialize the V4L2 subdev. */ 2448 ret = alvium_subdev_init(alvium); 2449 if (ret) 2450 goto err_pm; 2451 2452 ret = v4l2_async_register_subdev(&alvium->sd); 2453 if (ret < 0) { 2454 dev_err_probe(dev, ret, "Could not register v4l2 device\n"); 2455 goto err_subdev; 2456 } 2457 2458 return 0; 2459 2460 err_subdev: 2461 alvium_subdev_cleanup(alvium); 2462 err_pm: 2463 pm_runtime_disable(dev); 2464 pm_runtime_put_noidle(dev); 2465 kfree(alvium->alvium_csi2_fmt); 2466 err_powerdown: 2467 alvium_set_power(alvium, false); 2468 2469 return ret; 2470 } 2471 2472 static void alvium_remove(struct i2c_client *client) 2473 { 2474 struct v4l2_subdev *sd = i2c_get_clientdata(client); 2475 struct alvium_dev *alvium = sd_to_alvium(sd); 2476 struct device *dev = &alvium->i2c_client->dev; 2477 2478 v4l2_async_unregister_subdev(sd); 2479 alvium_subdev_cleanup(alvium); 2480 kfree(alvium->alvium_csi2_fmt); 2481 /* 2482 * Disable runtime PM. In case runtime PM is disabled in the kernel, 2483 * make sure to turn power off manually. 2484 */ 2485 pm_runtime_disable(dev); 2486 if (!pm_runtime_status_suspended(dev)) 2487 alvium_set_power(alvium, false); 2488 pm_runtime_set_suspended(dev); 2489 } 2490 2491 static const struct of_device_id alvium_of_ids[] = { 2492 { .compatible = "alliedvision,alvium-csi2", }, 2493 { } 2494 }; 2495 MODULE_DEVICE_TABLE(of, alvium_of_ids); 2496 2497 static struct i2c_driver alvium_i2c_driver = { 2498 .driver = { 2499 .name = "alvium-csi2", 2500 .pm = pm_ptr(&alvium_pm_ops), 2501 .of_match_table = alvium_of_ids, 2502 }, 2503 .probe = alvium_probe, 2504 .remove = alvium_remove, 2505 }; 2506 2507 module_i2c_driver(alvium_i2c_driver); 2508 2509 MODULE_DESCRIPTION("Allied Vision's Alvium Camera Driver"); 2510 MODULE_AUTHOR("Tommaso Merciai <tomm.merciai@gmail.com>"); 2511 MODULE_AUTHOR("Martin Hecht <martin.hecht@avnet.eu>"); 2512 MODULE_AUTHOR("Avnet Silica Software & Services EMEA"); 2513 MODULE_LICENSE("GPL"); 2514