1 /* 2 * Copyright (C) 2012-2014 Mentor Graphics Inc. 3 * Copyright (C) 2005-2009 Freescale Semiconductor, Inc. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License as published by the 7 * Free Software Foundation; either version 2 of the License, or (at your 8 * option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * for more details. 14 */ 15 #include <linux/export.h> 16 #include <linux/module.h> 17 #include <linux/types.h> 18 #include <linux/errno.h> 19 #include <linux/delay.h> 20 #include <linux/io.h> 21 #include <linux/err.h> 22 #include <linux/platform_device.h> 23 #include <linux/videodev2.h> 24 #include <uapi/linux/v4l2-mediabus.h> 25 #include <linux/clk.h> 26 #include <linux/clk-provider.h> 27 #include <linux/clkdev.h> 28 29 #include "ipu-prv.h" 30 31 struct ipu_csi { 32 void __iomem *base; 33 int id; 34 u32 module; 35 struct clk *clk_ipu; /* IPU bus clock */ 36 spinlock_t lock; 37 bool inuse; 38 struct ipu_soc *ipu; 39 }; 40 41 /* CSI Register Offsets */ 42 #define CSI_SENS_CONF 0x0000 43 #define CSI_SENS_FRM_SIZE 0x0004 44 #define CSI_ACT_FRM_SIZE 0x0008 45 #define CSI_OUT_FRM_CTRL 0x000c 46 #define CSI_TST_CTRL 0x0010 47 #define CSI_CCIR_CODE_1 0x0014 48 #define CSI_CCIR_CODE_2 0x0018 49 #define CSI_CCIR_CODE_3 0x001c 50 #define CSI_MIPI_DI 0x0020 51 #define CSI_SKIP 0x0024 52 #define CSI_CPD_CTRL 0x0028 53 #define CSI_CPD_RC(n) (0x002c + ((n)*4)) 54 #define CSI_CPD_RS(n) (0x004c + ((n)*4)) 55 #define CSI_CPD_GRC(n) (0x005c + ((n)*4)) 56 #define CSI_CPD_GRS(n) (0x007c + ((n)*4)) 57 #define CSI_CPD_GBC(n) (0x008c + ((n)*4)) 58 #define CSI_CPD_GBS(n) (0x00Ac + ((n)*4)) 59 #define CSI_CPD_BC(n) (0x00Bc + ((n)*4)) 60 #define CSI_CPD_BS(n) (0x00Dc + ((n)*4)) 61 #define CSI_CPD_OFFSET1 0x00ec 62 #define CSI_CPD_OFFSET2 0x00f0 63 64 /* CSI Register Fields */ 65 #define CSI_SENS_CONF_DATA_FMT_SHIFT 8 66 #define CSI_SENS_CONF_DATA_FMT_MASK 0x00000700 67 #define CSI_SENS_CONF_DATA_FMT_RGB_YUV444 0L 68 #define CSI_SENS_CONF_DATA_FMT_YUV422_YUYV 1L 69 #define CSI_SENS_CONF_DATA_FMT_YUV422_UYVY 2L 70 #define CSI_SENS_CONF_DATA_FMT_BAYER 3L 71 #define CSI_SENS_CONF_DATA_FMT_RGB565 4L 72 #define CSI_SENS_CONF_DATA_FMT_RGB555 5L 73 #define CSI_SENS_CONF_DATA_FMT_RGB444 6L 74 #define CSI_SENS_CONF_DATA_FMT_JPEG 7L 75 76 #define CSI_SENS_CONF_VSYNC_POL_SHIFT 0 77 #define CSI_SENS_CONF_HSYNC_POL_SHIFT 1 78 #define CSI_SENS_CONF_DATA_POL_SHIFT 2 79 #define CSI_SENS_CONF_PIX_CLK_POL_SHIFT 3 80 #define CSI_SENS_CONF_SENS_PRTCL_MASK 0x00000070 81 #define CSI_SENS_CONF_SENS_PRTCL_SHIFT 4 82 #define CSI_SENS_CONF_PACK_TIGHT_SHIFT 7 83 #define CSI_SENS_CONF_DATA_WIDTH_SHIFT 11 84 #define CSI_SENS_CONF_EXT_VSYNC_SHIFT 15 85 #define CSI_SENS_CONF_DIVRATIO_SHIFT 16 86 87 #define CSI_SENS_CONF_DIVRATIO_MASK 0x00ff0000 88 #define CSI_SENS_CONF_DATA_DEST_SHIFT 24 89 #define CSI_SENS_CONF_DATA_DEST_MASK 0x07000000 90 #define CSI_SENS_CONF_JPEG8_EN_SHIFT 27 91 #define CSI_SENS_CONF_JPEG_EN_SHIFT 28 92 #define CSI_SENS_CONF_FORCE_EOF_SHIFT 29 93 #define CSI_SENS_CONF_DATA_EN_POL_SHIFT 31 94 95 #define CSI_DATA_DEST_IC 2 96 #define CSI_DATA_DEST_IDMAC 4 97 98 #define CSI_CCIR_ERR_DET_EN 0x01000000 99 #define CSI_HORI_DOWNSIZE_EN 0x80000000 100 #define CSI_VERT_DOWNSIZE_EN 0x40000000 101 #define CSI_TEST_GEN_MODE_EN 0x01000000 102 103 #define CSI_HSC_MASK 0x1fff0000 104 #define CSI_HSC_SHIFT 16 105 #define CSI_VSC_MASK 0x00000fff 106 #define CSI_VSC_SHIFT 0 107 108 #define CSI_TEST_GEN_R_MASK 0x000000ff 109 #define CSI_TEST_GEN_R_SHIFT 0 110 #define CSI_TEST_GEN_G_MASK 0x0000ff00 111 #define CSI_TEST_GEN_G_SHIFT 8 112 #define CSI_TEST_GEN_B_MASK 0x00ff0000 113 #define CSI_TEST_GEN_B_SHIFT 16 114 115 #define CSI_MAX_RATIO_SKIP_SMFC_MASK 0x00000007 116 #define CSI_MAX_RATIO_SKIP_SMFC_SHIFT 0 117 #define CSI_SKIP_SMFC_MASK 0x000000f8 118 #define CSI_SKIP_SMFC_SHIFT 3 119 #define CSI_ID_2_SKIP_MASK 0x00000300 120 #define CSI_ID_2_SKIP_SHIFT 8 121 122 #define CSI_COLOR_FIRST_ROW_MASK 0x00000002 123 #define CSI_COLOR_FIRST_COMP_MASK 0x00000001 124 125 /* MIPI CSI-2 data types */ 126 #define MIPI_DT_YUV420 0x18 /* YYY.../UYVY.... */ 127 #define MIPI_DT_YUV420_LEGACY 0x1a /* UYY.../VYY... */ 128 #define MIPI_DT_YUV422 0x1e /* UYVY... */ 129 #define MIPI_DT_RGB444 0x20 130 #define MIPI_DT_RGB555 0x21 131 #define MIPI_DT_RGB565 0x22 132 #define MIPI_DT_RGB666 0x23 133 #define MIPI_DT_RGB888 0x24 134 #define MIPI_DT_RAW6 0x28 135 #define MIPI_DT_RAW7 0x29 136 #define MIPI_DT_RAW8 0x2a 137 #define MIPI_DT_RAW10 0x2b 138 #define MIPI_DT_RAW12 0x2c 139 #define MIPI_DT_RAW14 0x2d 140 141 /* 142 * Bitfield of CSI bus signal polarities and modes. 143 */ 144 struct ipu_csi_bus_config { 145 unsigned data_width:4; 146 unsigned clk_mode:3; 147 unsigned ext_vsync:1; 148 unsigned vsync_pol:1; 149 unsigned hsync_pol:1; 150 unsigned pixclk_pol:1; 151 unsigned data_pol:1; 152 unsigned sens_clksrc:1; 153 unsigned pack_tight:1; 154 unsigned force_eof:1; 155 unsigned data_en_pol:1; 156 157 unsigned data_fmt; 158 unsigned mipi_dt; 159 }; 160 161 /* 162 * Enumeration of CSI data bus widths. 163 */ 164 enum ipu_csi_data_width { 165 IPU_CSI_DATA_WIDTH_4 = 0, 166 IPU_CSI_DATA_WIDTH_8 = 1, 167 IPU_CSI_DATA_WIDTH_10 = 3, 168 IPU_CSI_DATA_WIDTH_12 = 5, 169 IPU_CSI_DATA_WIDTH_16 = 9, 170 }; 171 172 /* 173 * Enumeration of CSI clock modes. 174 */ 175 enum ipu_csi_clk_mode { 176 IPU_CSI_CLK_MODE_GATED_CLK, 177 IPU_CSI_CLK_MODE_NONGATED_CLK, 178 IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE, 179 IPU_CSI_CLK_MODE_CCIR656_INTERLACED, 180 IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR, 181 IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR, 182 IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR, 183 IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR, 184 }; 185 186 static inline u32 ipu_csi_read(struct ipu_csi *csi, unsigned offset) 187 { 188 return readl(csi->base + offset); 189 } 190 191 static inline void ipu_csi_write(struct ipu_csi *csi, u32 value, 192 unsigned offset) 193 { 194 writel(value, csi->base + offset); 195 } 196 197 /* 198 * Set mclk division ratio for generating test mode mclk. Only used 199 * for test generator. 200 */ 201 static int ipu_csi_set_testgen_mclk(struct ipu_csi *csi, u32 pixel_clk, 202 u32 ipu_clk) 203 { 204 u32 temp; 205 int div_ratio; 206 207 div_ratio = (ipu_clk / pixel_clk) - 1; 208 209 if (div_ratio > 0xFF || div_ratio < 0) { 210 dev_err(csi->ipu->dev, 211 "value of pixel_clk extends normal range\n"); 212 return -EINVAL; 213 } 214 215 temp = ipu_csi_read(csi, CSI_SENS_CONF); 216 temp &= ~CSI_SENS_CONF_DIVRATIO_MASK; 217 ipu_csi_write(csi, temp | (div_ratio << CSI_SENS_CONF_DIVRATIO_SHIFT), 218 CSI_SENS_CONF); 219 220 return 0; 221 } 222 223 /* 224 * Find the CSI data format and data width for the given V4L2 media 225 * bus pixel format code. 226 */ 227 static int mbus_code_to_bus_cfg(struct ipu_csi_bus_config *cfg, u32 mbus_code) 228 { 229 switch (mbus_code) { 230 case MEDIA_BUS_FMT_BGR565_2X8_BE: 231 case MEDIA_BUS_FMT_BGR565_2X8_LE: 232 case MEDIA_BUS_FMT_RGB565_2X8_BE: 233 case MEDIA_BUS_FMT_RGB565_2X8_LE: 234 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB565; 235 cfg->mipi_dt = MIPI_DT_RGB565; 236 cfg->data_width = IPU_CSI_DATA_WIDTH_8; 237 break; 238 case MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE: 239 case MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE: 240 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB444; 241 cfg->mipi_dt = MIPI_DT_RGB444; 242 cfg->data_width = IPU_CSI_DATA_WIDTH_8; 243 break; 244 case MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE: 245 case MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE: 246 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB555; 247 cfg->mipi_dt = MIPI_DT_RGB555; 248 cfg->data_width = IPU_CSI_DATA_WIDTH_8; 249 break; 250 case MEDIA_BUS_FMT_UYVY8_2X8: 251 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_YUV422_UYVY; 252 cfg->mipi_dt = MIPI_DT_YUV422; 253 cfg->data_width = IPU_CSI_DATA_WIDTH_8; 254 break; 255 case MEDIA_BUS_FMT_YUYV8_2X8: 256 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_YUV422_YUYV; 257 cfg->mipi_dt = MIPI_DT_YUV422; 258 cfg->data_width = IPU_CSI_DATA_WIDTH_8; 259 break; 260 case MEDIA_BUS_FMT_UYVY8_1X16: 261 case MEDIA_BUS_FMT_YUYV8_1X16: 262 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER; 263 cfg->mipi_dt = MIPI_DT_YUV422; 264 cfg->data_width = IPU_CSI_DATA_WIDTH_16; 265 break; 266 case MEDIA_BUS_FMT_SBGGR8_1X8: 267 case MEDIA_BUS_FMT_SGBRG8_1X8: 268 case MEDIA_BUS_FMT_SGRBG8_1X8: 269 case MEDIA_BUS_FMT_SRGGB8_1X8: 270 case MEDIA_BUS_FMT_Y8_1X8: 271 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER; 272 cfg->mipi_dt = MIPI_DT_RAW8; 273 cfg->data_width = IPU_CSI_DATA_WIDTH_8; 274 break; 275 case MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8: 276 case MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8: 277 case MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8: 278 case MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8: 279 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE: 280 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE: 281 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE: 282 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE: 283 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER; 284 cfg->mipi_dt = MIPI_DT_RAW10; 285 cfg->data_width = IPU_CSI_DATA_WIDTH_8; 286 break; 287 case MEDIA_BUS_FMT_SBGGR10_1X10: 288 case MEDIA_BUS_FMT_SGBRG10_1X10: 289 case MEDIA_BUS_FMT_SGRBG10_1X10: 290 case MEDIA_BUS_FMT_SRGGB10_1X10: 291 case MEDIA_BUS_FMT_Y10_1X10: 292 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER; 293 cfg->mipi_dt = MIPI_DT_RAW10; 294 cfg->data_width = IPU_CSI_DATA_WIDTH_10; 295 break; 296 case MEDIA_BUS_FMT_SBGGR12_1X12: 297 case MEDIA_BUS_FMT_SGBRG12_1X12: 298 case MEDIA_BUS_FMT_SGRBG12_1X12: 299 case MEDIA_BUS_FMT_SRGGB12_1X12: 300 case MEDIA_BUS_FMT_Y12_1X12: 301 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER; 302 cfg->mipi_dt = MIPI_DT_RAW12; 303 cfg->data_width = IPU_CSI_DATA_WIDTH_12; 304 break; 305 case MEDIA_BUS_FMT_JPEG_1X8: 306 /* TODO */ 307 cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_JPEG; 308 cfg->mipi_dt = MIPI_DT_RAW8; 309 cfg->data_width = IPU_CSI_DATA_WIDTH_8; 310 break; 311 default: 312 return -EINVAL; 313 } 314 315 return 0; 316 } 317 318 /* 319 * Fill a CSI bus config struct from mbus_config and mbus_framefmt. 320 */ 321 static void fill_csi_bus_cfg(struct ipu_csi_bus_config *csicfg, 322 struct v4l2_mbus_config *mbus_cfg, 323 struct v4l2_mbus_framefmt *mbus_fmt) 324 { 325 memset(csicfg, 0, sizeof(*csicfg)); 326 327 mbus_code_to_bus_cfg(csicfg, mbus_fmt->code); 328 329 switch (mbus_cfg->type) { 330 case V4L2_MBUS_PARALLEL: 331 csicfg->ext_vsync = 1; 332 csicfg->vsync_pol = (mbus_cfg->flags & 333 V4L2_MBUS_VSYNC_ACTIVE_LOW) ? 1 : 0; 334 csicfg->hsync_pol = (mbus_cfg->flags & 335 V4L2_MBUS_HSYNC_ACTIVE_LOW) ? 1 : 0; 336 csicfg->pixclk_pol = (mbus_cfg->flags & 337 V4L2_MBUS_PCLK_SAMPLE_FALLING) ? 1 : 0; 338 csicfg->clk_mode = IPU_CSI_CLK_MODE_GATED_CLK; 339 break; 340 case V4L2_MBUS_BT656: 341 csicfg->ext_vsync = 0; 342 if (V4L2_FIELD_HAS_BOTH(mbus_fmt->field)) 343 csicfg->clk_mode = IPU_CSI_CLK_MODE_CCIR656_INTERLACED; 344 else 345 csicfg->clk_mode = IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE; 346 break; 347 case V4L2_MBUS_CSI2: 348 /* 349 * MIPI CSI-2 requires non gated clock mode, all other 350 * parameters are not applicable for MIPI CSI-2 bus. 351 */ 352 csicfg->clk_mode = IPU_CSI_CLK_MODE_NONGATED_CLK; 353 break; 354 default: 355 /* will never get here, keep compiler quiet */ 356 break; 357 } 358 } 359 360 int ipu_csi_init_interface(struct ipu_csi *csi, 361 struct v4l2_mbus_config *mbus_cfg, 362 struct v4l2_mbus_framefmt *mbus_fmt) 363 { 364 struct ipu_csi_bus_config cfg; 365 unsigned long flags; 366 u32 width, height, data = 0; 367 368 fill_csi_bus_cfg(&cfg, mbus_cfg, mbus_fmt); 369 370 /* set default sensor frame width and height */ 371 width = mbus_fmt->width; 372 height = mbus_fmt->height; 373 374 /* Set the CSI_SENS_CONF register remaining fields */ 375 data |= cfg.data_width << CSI_SENS_CONF_DATA_WIDTH_SHIFT | 376 cfg.data_fmt << CSI_SENS_CONF_DATA_FMT_SHIFT | 377 cfg.data_pol << CSI_SENS_CONF_DATA_POL_SHIFT | 378 cfg.vsync_pol << CSI_SENS_CONF_VSYNC_POL_SHIFT | 379 cfg.hsync_pol << CSI_SENS_CONF_HSYNC_POL_SHIFT | 380 cfg.pixclk_pol << CSI_SENS_CONF_PIX_CLK_POL_SHIFT | 381 cfg.ext_vsync << CSI_SENS_CONF_EXT_VSYNC_SHIFT | 382 cfg.clk_mode << CSI_SENS_CONF_SENS_PRTCL_SHIFT | 383 cfg.pack_tight << CSI_SENS_CONF_PACK_TIGHT_SHIFT | 384 cfg.force_eof << CSI_SENS_CONF_FORCE_EOF_SHIFT | 385 cfg.data_en_pol << CSI_SENS_CONF_DATA_EN_POL_SHIFT; 386 387 spin_lock_irqsave(&csi->lock, flags); 388 389 ipu_csi_write(csi, data, CSI_SENS_CONF); 390 391 /* Set CCIR registers */ 392 393 switch (cfg.clk_mode) { 394 case IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE: 395 ipu_csi_write(csi, 0x40030, CSI_CCIR_CODE_1); 396 ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3); 397 break; 398 case IPU_CSI_CLK_MODE_CCIR656_INTERLACED: 399 if (mbus_fmt->width == 720 && mbus_fmt->height == 576) { 400 /* 401 * PAL case 402 * 403 * Field0BlankEnd = 0x6, Field0BlankStart = 0x2, 404 * Field0ActiveEnd = 0x4, Field0ActiveStart = 0 405 * Field1BlankEnd = 0x7, Field1BlankStart = 0x3, 406 * Field1ActiveEnd = 0x5, Field1ActiveStart = 0x1 407 */ 408 height = 625; /* framelines for PAL */ 409 410 ipu_csi_write(csi, 0x40596 | CSI_CCIR_ERR_DET_EN, 411 CSI_CCIR_CODE_1); 412 ipu_csi_write(csi, 0xD07DF, CSI_CCIR_CODE_2); 413 ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3); 414 } else if (mbus_fmt->width == 720 && mbus_fmt->height == 480) { 415 /* 416 * NTSC case 417 * 418 * Field0BlankEnd = 0x7, Field0BlankStart = 0x3, 419 * Field0ActiveEnd = 0x5, Field0ActiveStart = 0x1 420 * Field1BlankEnd = 0x6, Field1BlankStart = 0x2, 421 * Field1ActiveEnd = 0x4, Field1ActiveStart = 0 422 */ 423 height = 525; /* framelines for NTSC */ 424 425 ipu_csi_write(csi, 0xD07DF | CSI_CCIR_ERR_DET_EN, 426 CSI_CCIR_CODE_1); 427 ipu_csi_write(csi, 0x40596, CSI_CCIR_CODE_2); 428 ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3); 429 } else { 430 dev_err(csi->ipu->dev, 431 "Unsupported CCIR656 interlaced video mode\n"); 432 spin_unlock_irqrestore(&csi->lock, flags); 433 return -EINVAL; 434 } 435 break; 436 case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR: 437 case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR: 438 case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR: 439 case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR: 440 ipu_csi_write(csi, 0x40030 | CSI_CCIR_ERR_DET_EN, 441 CSI_CCIR_CODE_1); 442 ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3); 443 break; 444 case IPU_CSI_CLK_MODE_GATED_CLK: 445 case IPU_CSI_CLK_MODE_NONGATED_CLK: 446 ipu_csi_write(csi, 0, CSI_CCIR_CODE_1); 447 break; 448 } 449 450 /* Setup sensor frame size */ 451 ipu_csi_write(csi, (width - 1) | ((height - 1) << 16), 452 CSI_SENS_FRM_SIZE); 453 454 dev_dbg(csi->ipu->dev, "CSI_SENS_CONF = 0x%08X\n", 455 ipu_csi_read(csi, CSI_SENS_CONF)); 456 dev_dbg(csi->ipu->dev, "CSI_ACT_FRM_SIZE = 0x%08X\n", 457 ipu_csi_read(csi, CSI_ACT_FRM_SIZE)); 458 459 spin_unlock_irqrestore(&csi->lock, flags); 460 461 return 0; 462 } 463 EXPORT_SYMBOL_GPL(ipu_csi_init_interface); 464 465 bool ipu_csi_is_interlaced(struct ipu_csi *csi) 466 { 467 unsigned long flags; 468 u32 sensor_protocol; 469 470 spin_lock_irqsave(&csi->lock, flags); 471 sensor_protocol = 472 (ipu_csi_read(csi, CSI_SENS_CONF) & 473 CSI_SENS_CONF_SENS_PRTCL_MASK) >> 474 CSI_SENS_CONF_SENS_PRTCL_SHIFT; 475 spin_unlock_irqrestore(&csi->lock, flags); 476 477 switch (sensor_protocol) { 478 case IPU_CSI_CLK_MODE_GATED_CLK: 479 case IPU_CSI_CLK_MODE_NONGATED_CLK: 480 case IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE: 481 case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR: 482 case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR: 483 return false; 484 case IPU_CSI_CLK_MODE_CCIR656_INTERLACED: 485 case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR: 486 case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR: 487 return true; 488 default: 489 dev_err(csi->ipu->dev, 490 "CSI %d sensor protocol unsupported\n", csi->id); 491 return false; 492 } 493 } 494 EXPORT_SYMBOL_GPL(ipu_csi_is_interlaced); 495 496 void ipu_csi_get_window(struct ipu_csi *csi, struct v4l2_rect *w) 497 { 498 unsigned long flags; 499 u32 reg; 500 501 spin_lock_irqsave(&csi->lock, flags); 502 503 reg = ipu_csi_read(csi, CSI_ACT_FRM_SIZE); 504 w->width = (reg & 0xFFFF) + 1; 505 w->height = (reg >> 16 & 0xFFFF) + 1; 506 507 reg = ipu_csi_read(csi, CSI_OUT_FRM_CTRL); 508 w->left = (reg & CSI_HSC_MASK) >> CSI_HSC_SHIFT; 509 w->top = (reg & CSI_VSC_MASK) >> CSI_VSC_SHIFT; 510 511 spin_unlock_irqrestore(&csi->lock, flags); 512 } 513 EXPORT_SYMBOL_GPL(ipu_csi_get_window); 514 515 void ipu_csi_set_window(struct ipu_csi *csi, struct v4l2_rect *w) 516 { 517 unsigned long flags; 518 u32 reg; 519 520 spin_lock_irqsave(&csi->lock, flags); 521 522 ipu_csi_write(csi, (w->width - 1) | ((w->height - 1) << 16), 523 CSI_ACT_FRM_SIZE); 524 525 reg = ipu_csi_read(csi, CSI_OUT_FRM_CTRL); 526 reg &= ~(CSI_HSC_MASK | CSI_VSC_MASK); 527 reg |= ((w->top << CSI_VSC_SHIFT) | (w->left << CSI_HSC_SHIFT)); 528 ipu_csi_write(csi, reg, CSI_OUT_FRM_CTRL); 529 530 spin_unlock_irqrestore(&csi->lock, flags); 531 } 532 EXPORT_SYMBOL_GPL(ipu_csi_set_window); 533 534 void ipu_csi_set_downsize(struct ipu_csi *csi, bool horiz, bool vert) 535 { 536 unsigned long flags; 537 u32 reg; 538 539 spin_lock_irqsave(&csi->lock, flags); 540 541 reg = ipu_csi_read(csi, CSI_OUT_FRM_CTRL); 542 reg &= ~(CSI_HORI_DOWNSIZE_EN | CSI_VERT_DOWNSIZE_EN); 543 reg |= (horiz ? CSI_HORI_DOWNSIZE_EN : 0) | 544 (vert ? CSI_VERT_DOWNSIZE_EN : 0); 545 ipu_csi_write(csi, reg, CSI_OUT_FRM_CTRL); 546 547 spin_unlock_irqrestore(&csi->lock, flags); 548 } 549 EXPORT_SYMBOL_GPL(ipu_csi_set_downsize); 550 551 void ipu_csi_set_test_generator(struct ipu_csi *csi, bool active, 552 u32 r_value, u32 g_value, u32 b_value, 553 u32 pix_clk) 554 { 555 unsigned long flags; 556 u32 ipu_clk = clk_get_rate(csi->clk_ipu); 557 u32 temp; 558 559 spin_lock_irqsave(&csi->lock, flags); 560 561 temp = ipu_csi_read(csi, CSI_TST_CTRL); 562 563 if (!active) { 564 temp &= ~CSI_TEST_GEN_MODE_EN; 565 ipu_csi_write(csi, temp, CSI_TST_CTRL); 566 } else { 567 /* Set sensb_mclk div_ratio */ 568 ipu_csi_set_testgen_mclk(csi, pix_clk, ipu_clk); 569 570 temp &= ~(CSI_TEST_GEN_R_MASK | CSI_TEST_GEN_G_MASK | 571 CSI_TEST_GEN_B_MASK); 572 temp |= CSI_TEST_GEN_MODE_EN; 573 temp |= (r_value << CSI_TEST_GEN_R_SHIFT) | 574 (g_value << CSI_TEST_GEN_G_SHIFT) | 575 (b_value << CSI_TEST_GEN_B_SHIFT); 576 ipu_csi_write(csi, temp, CSI_TST_CTRL); 577 } 578 579 spin_unlock_irqrestore(&csi->lock, flags); 580 } 581 EXPORT_SYMBOL_GPL(ipu_csi_set_test_generator); 582 583 int ipu_csi_set_mipi_datatype(struct ipu_csi *csi, u32 vc, 584 struct v4l2_mbus_framefmt *mbus_fmt) 585 { 586 struct ipu_csi_bus_config cfg; 587 unsigned long flags; 588 u32 temp; 589 590 if (vc > 3) 591 return -EINVAL; 592 593 mbus_code_to_bus_cfg(&cfg, mbus_fmt->code); 594 595 spin_lock_irqsave(&csi->lock, flags); 596 597 temp = ipu_csi_read(csi, CSI_MIPI_DI); 598 temp &= ~(0xff << (vc * 8)); 599 temp |= (cfg.mipi_dt << (vc * 8)); 600 ipu_csi_write(csi, temp, CSI_MIPI_DI); 601 602 spin_unlock_irqrestore(&csi->lock, flags); 603 604 return 0; 605 } 606 EXPORT_SYMBOL_GPL(ipu_csi_set_mipi_datatype); 607 608 int ipu_csi_set_skip_smfc(struct ipu_csi *csi, u32 skip, 609 u32 max_ratio, u32 id) 610 { 611 unsigned long flags; 612 u32 temp; 613 614 if (max_ratio > 5 || id > 3) 615 return -EINVAL; 616 617 spin_lock_irqsave(&csi->lock, flags); 618 619 temp = ipu_csi_read(csi, CSI_SKIP); 620 temp &= ~(CSI_MAX_RATIO_SKIP_SMFC_MASK | CSI_ID_2_SKIP_MASK | 621 CSI_SKIP_SMFC_MASK); 622 temp |= (max_ratio << CSI_MAX_RATIO_SKIP_SMFC_SHIFT) | 623 (id << CSI_ID_2_SKIP_SHIFT) | 624 (skip << CSI_SKIP_SMFC_SHIFT); 625 ipu_csi_write(csi, temp, CSI_SKIP); 626 627 spin_unlock_irqrestore(&csi->lock, flags); 628 629 return 0; 630 } 631 EXPORT_SYMBOL_GPL(ipu_csi_set_skip_smfc); 632 633 int ipu_csi_set_dest(struct ipu_csi *csi, enum ipu_csi_dest csi_dest) 634 { 635 unsigned long flags; 636 u32 csi_sens_conf, dest; 637 638 if (csi_dest == IPU_CSI_DEST_IDMAC) 639 dest = CSI_DATA_DEST_IDMAC; 640 else 641 dest = CSI_DATA_DEST_IC; /* IC or VDIC */ 642 643 spin_lock_irqsave(&csi->lock, flags); 644 645 csi_sens_conf = ipu_csi_read(csi, CSI_SENS_CONF); 646 csi_sens_conf &= ~CSI_SENS_CONF_DATA_DEST_MASK; 647 csi_sens_conf |= (dest << CSI_SENS_CONF_DATA_DEST_SHIFT); 648 ipu_csi_write(csi, csi_sens_conf, CSI_SENS_CONF); 649 650 spin_unlock_irqrestore(&csi->lock, flags); 651 652 return 0; 653 } 654 EXPORT_SYMBOL_GPL(ipu_csi_set_dest); 655 656 int ipu_csi_enable(struct ipu_csi *csi) 657 { 658 ipu_module_enable(csi->ipu, csi->module); 659 660 return 0; 661 } 662 EXPORT_SYMBOL_GPL(ipu_csi_enable); 663 664 int ipu_csi_disable(struct ipu_csi *csi) 665 { 666 ipu_module_disable(csi->ipu, csi->module); 667 668 return 0; 669 } 670 EXPORT_SYMBOL_GPL(ipu_csi_disable); 671 672 struct ipu_csi *ipu_csi_get(struct ipu_soc *ipu, int id) 673 { 674 unsigned long flags; 675 struct ipu_csi *csi, *ret; 676 677 if (id > 1) 678 return ERR_PTR(-EINVAL); 679 680 csi = ipu->csi_priv[id]; 681 ret = csi; 682 683 spin_lock_irqsave(&csi->lock, flags); 684 685 if (csi->inuse) { 686 ret = ERR_PTR(-EBUSY); 687 goto unlock; 688 } 689 690 csi->inuse = true; 691 unlock: 692 spin_unlock_irqrestore(&csi->lock, flags); 693 return ret; 694 } 695 EXPORT_SYMBOL_GPL(ipu_csi_get); 696 697 void ipu_csi_put(struct ipu_csi *csi) 698 { 699 unsigned long flags; 700 701 spin_lock_irqsave(&csi->lock, flags); 702 csi->inuse = false; 703 spin_unlock_irqrestore(&csi->lock, flags); 704 } 705 EXPORT_SYMBOL_GPL(ipu_csi_put); 706 707 int ipu_csi_init(struct ipu_soc *ipu, struct device *dev, int id, 708 unsigned long base, u32 module, struct clk *clk_ipu) 709 { 710 struct ipu_csi *csi; 711 712 if (id > 1) 713 return -ENODEV; 714 715 csi = devm_kzalloc(dev, sizeof(*csi), GFP_KERNEL); 716 if (!csi) 717 return -ENOMEM; 718 719 ipu->csi_priv[id] = csi; 720 721 spin_lock_init(&csi->lock); 722 csi->module = module; 723 csi->id = id; 724 csi->clk_ipu = clk_ipu; 725 csi->base = devm_ioremap(dev, base, PAGE_SIZE); 726 if (!csi->base) 727 return -ENOMEM; 728 729 dev_dbg(dev, "CSI%d base: 0x%08lx remapped to %p\n", 730 id, base, csi->base); 731 csi->ipu = ipu; 732 733 return 0; 734 } 735 736 void ipu_csi_exit(struct ipu_soc *ipu, int id) 737 { 738 } 739 740 void ipu_csi_dump(struct ipu_csi *csi) 741 { 742 dev_dbg(csi->ipu->dev, "CSI_SENS_CONF: %08x\n", 743 ipu_csi_read(csi, CSI_SENS_CONF)); 744 dev_dbg(csi->ipu->dev, "CSI_SENS_FRM_SIZE: %08x\n", 745 ipu_csi_read(csi, CSI_SENS_FRM_SIZE)); 746 dev_dbg(csi->ipu->dev, "CSI_ACT_FRM_SIZE: %08x\n", 747 ipu_csi_read(csi, CSI_ACT_FRM_SIZE)); 748 dev_dbg(csi->ipu->dev, "CSI_OUT_FRM_CTRL: %08x\n", 749 ipu_csi_read(csi, CSI_OUT_FRM_CTRL)); 750 dev_dbg(csi->ipu->dev, "CSI_TST_CTRL: %08x\n", 751 ipu_csi_read(csi, CSI_TST_CTRL)); 752 dev_dbg(csi->ipu->dev, "CSI_CCIR_CODE_1: %08x\n", 753 ipu_csi_read(csi, CSI_CCIR_CODE_1)); 754 dev_dbg(csi->ipu->dev, "CSI_CCIR_CODE_2: %08x\n", 755 ipu_csi_read(csi, CSI_CCIR_CODE_2)); 756 dev_dbg(csi->ipu->dev, "CSI_CCIR_CODE_3: %08x\n", 757 ipu_csi_read(csi, CSI_CCIR_CODE_3)); 758 dev_dbg(csi->ipu->dev, "CSI_MIPI_DI: %08x\n", 759 ipu_csi_read(csi, CSI_MIPI_DI)); 760 dev_dbg(csi->ipu->dev, "CSI_SKIP: %08x\n", 761 ipu_csi_read(csi, CSI_SKIP)); 762 } 763 EXPORT_SYMBOL_GPL(ipu_csi_dump); 764