1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * ispccp2.c 4 * 5 * TI OMAP3 ISP - CCP2 module 6 * 7 * Copyright (C) 2010 Nokia Corporation 8 * Copyright (C) 2010 Texas Instruments, Inc. 9 * 10 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> 11 * Sakari Ailus <sakari.ailus@iki.fi> 12 */ 13 14#include <linux/delay.h> 15#include <linux/device.h> 16#include <linux/mm.h> 17#include <linux/module.h> 18#include <linux/mutex.h> 19#include <linux/uaccess.h> 20#include <linux/regulator/consumer.h> 21 22#include "isp.h" 23#include "ispreg.h" 24#include "ispccp2.h" 25 26/* Number of LCX channels */ 27#define CCP2_LCx_CHANS_NUM 3 28/* Max/Min size for CCP2 video port */ 29#define ISPCCP2_DAT_START_MIN 0 30#define ISPCCP2_DAT_START_MAX 4095 31#define ISPCCP2_DAT_SIZE_MIN 0 32#define ISPCCP2_DAT_SIZE_MAX 4095 33#define ISPCCP2_VPCLK_FRACDIV 65536 34#define ISPCCP2_LCx_CTRL_FORMAT_RAW8_DPCM10_VP 0x12 35#define ISPCCP2_LCx_CTRL_FORMAT_RAW10_VP 0x16 36/* Max/Min size for CCP2 memory channel */ 37#define ISPCCP2_LCM_HSIZE_COUNT_MIN 16 38#define ISPCCP2_LCM_HSIZE_COUNT_MAX 8191 39#define ISPCCP2_LCM_HSIZE_SKIP_MIN 0 40#define ISPCCP2_LCM_HSIZE_SKIP_MAX 8191 41#define ISPCCP2_LCM_VSIZE_MIN 1 42#define ISPCCP2_LCM_VSIZE_MAX 8191 43#define ISPCCP2_LCM_HWORDS_MIN 1 44#define ISPCCP2_LCM_HWORDS_MAX 4095 45#define ISPCCP2_LCM_CTRL_BURST_SIZE_32X 5 46#define ISPCCP2_LCM_CTRL_READ_THROTTLE_FULL 0 47#define ISPCCP2_LCM_CTRL_SRC_DECOMPR_DPCM10 2 48#define ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW8 2 49#define ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW10 3 50#define ISPCCP2_LCM_CTRL_DST_FORMAT_RAW10 3 51#define ISPCCP2_LCM_CTRL_DST_PORT_VP 0 52#define ISPCCP2_LCM_CTRL_DST_PORT_MEM 1 53 54/* Set only the required bits */ 55#define BIT_SET(var, shift, mask, val) \ 56 do { \ 57 var = ((var) & ~((mask) << (shift))) \ 58 | ((val) << (shift)); \ 59 } while (0) 60 61/* 62 * ccp2_print_status - Print current CCP2 module register values. 63 */ 64#define CCP2_PRINT_REGISTER(isp, name)\ 65 dev_dbg(isp->dev, "###CCP2 " #name "=0x%08x\n", \ 66 isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_##name)) 67 68static void ccp2_print_status(struct isp_ccp2_device *ccp2) 69{ 70 struct isp_device *isp = to_isp_device(ccp2); 71 72 dev_dbg(isp->dev, "-------------CCP2 Register dump-------------\n"); 73 74 CCP2_PRINT_REGISTER(isp, SYSCONFIG); 75 CCP2_PRINT_REGISTER(isp, SYSSTATUS); 76 CCP2_PRINT_REGISTER(isp, LC01_IRQENABLE); 77 CCP2_PRINT_REGISTER(isp, LC01_IRQSTATUS); 78 CCP2_PRINT_REGISTER(isp, LC23_IRQENABLE); 79 CCP2_PRINT_REGISTER(isp, LC23_IRQSTATUS); 80 CCP2_PRINT_REGISTER(isp, LCM_IRQENABLE); 81 CCP2_PRINT_REGISTER(isp, LCM_IRQSTATUS); 82 CCP2_PRINT_REGISTER(isp, CTRL); 83 CCP2_PRINT_REGISTER(isp, LCx_CTRL(0)); 84 CCP2_PRINT_REGISTER(isp, LCx_CODE(0)); 85 CCP2_PRINT_REGISTER(isp, LCx_STAT_START(0)); 86 CCP2_PRINT_REGISTER(isp, LCx_STAT_SIZE(0)); 87 CCP2_PRINT_REGISTER(isp, LCx_SOF_ADDR(0)); 88 CCP2_PRINT_REGISTER(isp, LCx_EOF_ADDR(0)); 89 CCP2_PRINT_REGISTER(isp, LCx_DAT_START(0)); 90 CCP2_PRINT_REGISTER(isp, LCx_DAT_SIZE(0)); 91 CCP2_PRINT_REGISTER(isp, LCx_DAT_PING_ADDR(0)); 92 CCP2_PRINT_REGISTER(isp, LCx_DAT_PONG_ADDR(0)); 93 CCP2_PRINT_REGISTER(isp, LCx_DAT_OFST(0)); 94 CCP2_PRINT_REGISTER(isp, LCM_CTRL); 95 CCP2_PRINT_REGISTER(isp, LCM_VSIZE); 96 CCP2_PRINT_REGISTER(isp, LCM_HSIZE); 97 CCP2_PRINT_REGISTER(isp, LCM_PREFETCH); 98 CCP2_PRINT_REGISTER(isp, LCM_SRC_ADDR); 99 CCP2_PRINT_REGISTER(isp, LCM_SRC_OFST); 100 CCP2_PRINT_REGISTER(isp, LCM_DST_ADDR); 101 CCP2_PRINT_REGISTER(isp, LCM_DST_OFST); 102 103 dev_dbg(isp->dev, "--------------------------------------------\n"); 104} 105 106/* 107 * ccp2_reset - Reset the CCP2 108 * @ccp2: pointer to ISP CCP2 device 109 */ 110static void ccp2_reset(struct isp_ccp2_device *ccp2) 111{ 112 struct isp_device *isp = to_isp_device(ccp2); 113 int i = 0; 114 115 /* Reset the CSI1/CCP2B and wait for reset to complete */ 116 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_SYSCONFIG, 117 ISPCCP2_SYSCONFIG_SOFT_RESET); 118 while (!(isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_SYSSTATUS) & 119 ISPCCP2_SYSSTATUS_RESET_DONE)) { 120 udelay(10); 121 if (i++ > 10) { /* try read 10 times */ 122 dev_warn(isp->dev, 123 "omap3_isp: timeout waiting for ccp2 reset\n"); 124 break; 125 } 126 } 127} 128 129/* 130 * ccp2_pwr_cfg - Configure the power mode settings 131 * @ccp2: pointer to ISP CCP2 device 132 */ 133static void ccp2_pwr_cfg(struct isp_ccp2_device *ccp2) 134{ 135 struct isp_device *isp = to_isp_device(ccp2); 136 137 isp_reg_writel(isp, ISPCCP2_SYSCONFIG_MSTANDBY_MODE_SMART | 138 ((isp->revision == ISP_REVISION_15_0 && isp->autoidle) ? 139 ISPCCP2_SYSCONFIG_AUTO_IDLE : 0), 140 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_SYSCONFIG); 141} 142 143/* 144 * ccp2_if_enable - Enable CCP2 interface. 145 * @ccp2: pointer to ISP CCP2 device 146 * @enable: enable/disable flag 147 */ 148static int ccp2_if_enable(struct isp_ccp2_device *ccp2, u8 enable) 149{ 150 struct isp_device *isp = to_isp_device(ccp2); 151 int ret; 152 int i; 153 154 if (enable && ccp2->vdds_csib) { 155 ret = regulator_enable(ccp2->vdds_csib); 156 if (ret < 0) 157 return ret; 158 } 159 160 /* Enable/Disable all the LCx channels */ 161 for (i = 0; i < CCP2_LCx_CHANS_NUM; i++) 162 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(i), 163 ISPCCP2_LCx_CTRL_CHAN_EN, 164 enable ? ISPCCP2_LCx_CTRL_CHAN_EN : 0); 165 166 /* Enable/Disable ccp2 interface in ccp2 mode */ 167 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL, 168 ISPCCP2_CTRL_MODE | ISPCCP2_CTRL_IF_EN, 169 enable ? (ISPCCP2_CTRL_MODE | ISPCCP2_CTRL_IF_EN) : 0); 170 171 if (!enable && ccp2->vdds_csib) 172 regulator_disable(ccp2->vdds_csib); 173 174 return 0; 175} 176 177/* 178 * ccp2_mem_enable - Enable CCP2 memory interface. 179 * @ccp2: pointer to ISP CCP2 device 180 * @enable: enable/disable flag 181 */ 182static void ccp2_mem_enable(struct isp_ccp2_device *ccp2, u8 enable) 183{ 184 struct isp_device *isp = to_isp_device(ccp2); 185 186 if (enable) 187 ccp2_if_enable(ccp2, 0); 188 189 /* Enable/Disable ccp2 interface in ccp2 mode */ 190 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL, 191 ISPCCP2_CTRL_MODE, enable ? ISPCCP2_CTRL_MODE : 0); 192 193 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_CTRL, 194 ISPCCP2_LCM_CTRL_CHAN_EN, 195 enable ? ISPCCP2_LCM_CTRL_CHAN_EN : 0); 196} 197 198/* 199 * ccp2_phyif_config - Initialize CCP2 phy interface config 200 * @ccp2: Pointer to ISP CCP2 device 201 * @buscfg: CCP2 platform data 202 * 203 * Configure the CCP2 physical interface module from platform data. 204 * 205 * Returns -EIO if strobe is chosen in CSI1 mode, or 0 on success. 206 */ 207static int ccp2_phyif_config(struct isp_ccp2_device *ccp2, 208 const struct isp_ccp2_cfg *buscfg) 209{ 210 struct isp_device *isp = to_isp_device(ccp2); 211 u32 val; 212 213 val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL) | 214 ISPCCP2_CTRL_MODE; 215 /* Data/strobe physical layer */ 216 BIT_SET(val, ISPCCP2_CTRL_PHY_SEL_SHIFT, ISPCCP2_CTRL_PHY_SEL_MASK, 217 buscfg->phy_layer); 218 BIT_SET(val, ISPCCP2_CTRL_IO_OUT_SEL_SHIFT, 219 ISPCCP2_CTRL_IO_OUT_SEL_MASK, buscfg->ccp2_mode); 220 BIT_SET(val, ISPCCP2_CTRL_INV_SHIFT, ISPCCP2_CTRL_INV_MASK, 221 buscfg->strobe_clk_pol); 222 BIT_SET(val, ISPCCP2_CTRL_VP_CLK_POL_SHIFT, 223 ISPCCP2_CTRL_VP_CLK_POL_MASK, buscfg->vp_clk_pol); 224 isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL); 225 226 val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL); 227 if (!(val & ISPCCP2_CTRL_MODE)) { 228 if (buscfg->ccp2_mode == ISP_CCP2_MODE_CCP2) 229 dev_warn(isp->dev, "OMAP3 CCP2 bus not available\n"); 230 if (buscfg->phy_layer == ISP_CCP2_PHY_DATA_STROBE) 231 /* Strobe mode requires CCP2 */ 232 return -EIO; 233 } 234 235 return 0; 236} 237 238/* 239 * ccp2_vp_config - Initialize CCP2 video port interface. 240 * @ccp2: Pointer to ISP CCP2 device 241 * @vpclk_div: Video port divisor 242 * 243 * Configure the CCP2 video port with the given clock divisor. The valid divisor 244 * values depend on the ISP revision: 245 * 246 * - revision 1.0 and 2.0 1 to 4 247 * - revision 15.0 1 to 65536 248 * 249 * The exact divisor value used might differ from the requested value, as ISP 250 * revision 15.0 represent the divisor by 65536 divided by an integer. 251 */ 252static void ccp2_vp_config(struct isp_ccp2_device *ccp2, 253 unsigned int vpclk_div) 254{ 255 struct isp_device *isp = to_isp_device(ccp2); 256 u32 val; 257 258 /* ISPCCP2_CTRL Video port */ 259 val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL); 260 val |= ISPCCP2_CTRL_VP_ONLY_EN; /* Disable the memory write port */ 261 262 if (isp->revision == ISP_REVISION_15_0) { 263 vpclk_div = clamp_t(unsigned int, vpclk_div, 1, 65536); 264 vpclk_div = min(ISPCCP2_VPCLK_FRACDIV / vpclk_div, 65535U); 265 BIT_SET(val, ISPCCP2_CTRL_VPCLK_DIV_SHIFT, 266 ISPCCP2_CTRL_VPCLK_DIV_MASK, vpclk_div); 267 } else { 268 vpclk_div = clamp_t(unsigned int, vpclk_div, 1, 4); 269 BIT_SET(val, ISPCCP2_CTRL_VP_OUT_CTRL_SHIFT, 270 ISPCCP2_CTRL_VP_OUT_CTRL_MASK, vpclk_div - 1); 271 } 272 273 isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL); 274} 275 276/* 277 * ccp2_lcx_config - Initialize CCP2 logical channel interface. 278 * @ccp2: Pointer to ISP CCP2 device 279 * @config: Pointer to ISP LCx config structure. 280 * 281 * This will analyze the parameters passed by the interface config 282 * and configure CSI1/CCP2 logical channel 283 * 284 */ 285static void ccp2_lcx_config(struct isp_ccp2_device *ccp2, 286 struct isp_interface_lcx_config *config) 287{ 288 struct isp_device *isp = to_isp_device(ccp2); 289 u32 val, format; 290 291 switch (config->format) { 292 case MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8: 293 format = ISPCCP2_LCx_CTRL_FORMAT_RAW8_DPCM10_VP; 294 break; 295 case MEDIA_BUS_FMT_SGRBG10_1X10: 296 default: 297 format = ISPCCP2_LCx_CTRL_FORMAT_RAW10_VP; /* RAW10+VP */ 298 break; 299 } 300 /* ISPCCP2_LCx_CTRL logical channel #0 */ 301 val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(0)) 302 | (ISPCCP2_LCx_CTRL_REGION_EN); /* Region */ 303 304 if (isp->revision == ISP_REVISION_15_0) { 305 /* CRC */ 306 BIT_SET(val, ISPCCP2_LCx_CTRL_CRC_SHIFT_15_0, 307 ISPCCP2_LCx_CTRL_CRC_MASK, 308 config->crc); 309 /* Format = RAW10+VP or RAW8+DPCM10+VP*/ 310 BIT_SET(val, ISPCCP2_LCx_CTRL_FORMAT_SHIFT_15_0, 311 ISPCCP2_LCx_CTRL_FORMAT_MASK_15_0, format); 312 } else { 313 BIT_SET(val, ISPCCP2_LCx_CTRL_CRC_SHIFT, 314 ISPCCP2_LCx_CTRL_CRC_MASK, 315 config->crc); 316 317 BIT_SET(val, ISPCCP2_LCx_CTRL_FORMAT_SHIFT, 318 ISPCCP2_LCx_CTRL_FORMAT_MASK, format); 319 } 320 isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(0)); 321 322 /* ISPCCP2_DAT_START for logical channel #0 */ 323 isp_reg_writel(isp, config->data_start << ISPCCP2_LCx_DAT_SHIFT, 324 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_DAT_START(0)); 325 326 /* ISPCCP2_DAT_SIZE for logical channel #0 */ 327 isp_reg_writel(isp, config->data_size << ISPCCP2_LCx_DAT_SHIFT, 328 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_DAT_SIZE(0)); 329 330 /* Enable error IRQs for logical channel #0 */ 331 val = ISPCCP2_LC01_IRQSTATUS_LC0_FIFO_OVF_IRQ | 332 ISPCCP2_LC01_IRQSTATUS_LC0_CRC_IRQ | 333 ISPCCP2_LC01_IRQSTATUS_LC0_FSP_IRQ | 334 ISPCCP2_LC01_IRQSTATUS_LC0_FW_IRQ | 335 ISPCCP2_LC01_IRQSTATUS_LC0_FSC_IRQ | 336 ISPCCP2_LC01_IRQSTATUS_LC0_SSC_IRQ; 337 338 isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LC01_IRQSTATUS); 339 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LC01_IRQENABLE, val); 340} 341 342/* 343 * ccp2_if_configure - Configure ccp2 with data from sensor 344 * @ccp2: Pointer to ISP CCP2 device 345 * 346 * Return 0 on success or a negative error code 347 */ 348static int ccp2_if_configure(struct isp_ccp2_device *ccp2) 349{ 350 struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity); 351 const struct isp_bus_cfg *buscfg; 352 struct v4l2_mbus_framefmt *format; 353 struct media_pad *pad; 354 struct v4l2_subdev *sensor; 355 u32 lines = 0; 356 int ret; 357 358 ccp2_pwr_cfg(ccp2); 359 360 pad = media_entity_remote_pad(&ccp2->pads[CCP2_PAD_SINK]); 361 sensor = media_entity_to_v4l2_subdev(pad->entity); 362 buscfg = v4l2_subdev_to_bus_cfg(pipe->external); 363 364 ret = ccp2_phyif_config(ccp2, &buscfg->bus.ccp2); 365 if (ret < 0) 366 return ret; 367 368 ccp2_vp_config(ccp2, buscfg->bus.ccp2.vpclk_div + 1); 369 370 v4l2_subdev_call(sensor, sensor, g_skip_top_lines, &lines); 371 372 format = &ccp2->formats[CCP2_PAD_SINK]; 373 374 ccp2->if_cfg.data_start = lines; 375 ccp2->if_cfg.crc = buscfg->bus.ccp2.crc; 376 ccp2->if_cfg.format = format->code; 377 ccp2->if_cfg.data_size = format->height; 378 379 ccp2_lcx_config(ccp2, &ccp2->if_cfg); 380 381 return 0; 382} 383 384static int ccp2_adjust_bandwidth(struct isp_ccp2_device *ccp2) 385{ 386 struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity); 387 struct isp_device *isp = to_isp_device(ccp2); 388 const struct v4l2_mbus_framefmt *ofmt = &ccp2->formats[CCP2_PAD_SOURCE]; 389 unsigned long l3_ick = pipe->l3_ick; 390 struct v4l2_fract *timeperframe; 391 unsigned int vpclk_div = 2; 392 unsigned int value; 393 u64 bound; 394 u64 area; 395 396 /* Compute the minimum clock divisor, based on the pipeline maximum 397 * data rate. This is an absolute lower bound if we don't want SBL 398 * overflows, so round the value up. 399 */ 400 vpclk_div = max_t(unsigned int, DIV_ROUND_UP(l3_ick, pipe->max_rate), 401 vpclk_div); 402 403 /* Compute the maximum clock divisor, based on the requested frame rate. 404 * This is a soft lower bound to achieve a frame rate equal or higher 405 * than the requested value, so round the value down. 406 */ 407 timeperframe = &pipe->max_timeperframe; 408 409 if (timeperframe->numerator) { 410 area = ofmt->width * ofmt->height; 411 bound = div_u64(area * timeperframe->denominator, 412 timeperframe->numerator); 413 value = min_t(u64, bound, l3_ick); 414 vpclk_div = max_t(unsigned int, l3_ick / value, vpclk_div); 415 } 416 417 dev_dbg(isp->dev, "%s: minimum clock divisor = %u\n", __func__, 418 vpclk_div); 419 420 return vpclk_div; 421} 422 423/* 424 * ccp2_mem_configure - Initialize CCP2 memory input/output interface 425 * @ccp2: Pointer to ISP CCP2 device 426 * @config: Pointer to ISP mem interface config structure 427 * 428 * This will analyze the parameters passed by the interface config 429 * structure, and configure the respective registers for proper 430 * CSI1/CCP2 memory input. 431 */ 432static void ccp2_mem_configure(struct isp_ccp2_device *ccp2, 433 struct isp_interface_mem_config *config) 434{ 435 struct isp_device *isp = to_isp_device(ccp2); 436 u32 sink_pixcode = ccp2->formats[CCP2_PAD_SINK].code; 437 u32 source_pixcode = ccp2->formats[CCP2_PAD_SOURCE].code; 438 unsigned int dpcm_decompress = 0; 439 u32 val, hwords; 440 441 if (sink_pixcode != source_pixcode && 442 sink_pixcode == MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8) 443 dpcm_decompress = 1; 444 445 ccp2_pwr_cfg(ccp2); 446 447 /* Hsize, Skip */ 448 isp_reg_writel(isp, ISPCCP2_LCM_HSIZE_SKIP_MIN | 449 (config->hsize_count << ISPCCP2_LCM_HSIZE_SHIFT), 450 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_HSIZE); 451 452 /* Vsize, no. of lines */ 453 isp_reg_writel(isp, config->vsize_count << ISPCCP2_LCM_VSIZE_SHIFT, 454 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_VSIZE); 455 456 if (ccp2->video_in.bpl_padding == 0) 457 config->src_ofst = 0; 458 else 459 config->src_ofst = ccp2->video_in.bpl_value; 460 461 isp_reg_writel(isp, config->src_ofst, OMAP3_ISP_IOMEM_CCP2, 462 ISPCCP2_LCM_SRC_OFST); 463 464 /* Source and Destination formats */ 465 val = ISPCCP2_LCM_CTRL_DST_FORMAT_RAW10 << 466 ISPCCP2_LCM_CTRL_DST_FORMAT_SHIFT; 467 468 if (dpcm_decompress) { 469 /* source format is RAW8 */ 470 val |= ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW8 << 471 ISPCCP2_LCM_CTRL_SRC_FORMAT_SHIFT; 472 473 /* RAW8 + DPCM10 - simple predictor */ 474 val |= ISPCCP2_LCM_CTRL_SRC_DPCM_PRED; 475 476 /* enable source DPCM decompression */ 477 val |= ISPCCP2_LCM_CTRL_SRC_DECOMPR_DPCM10 << 478 ISPCCP2_LCM_CTRL_SRC_DECOMPR_SHIFT; 479 } else { 480 /* source format is RAW10 */ 481 val |= ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW10 << 482 ISPCCP2_LCM_CTRL_SRC_FORMAT_SHIFT; 483 } 484 485 /* Burst size to 32x64 */ 486 val |= ISPCCP2_LCM_CTRL_BURST_SIZE_32X << 487 ISPCCP2_LCM_CTRL_BURST_SIZE_SHIFT; 488 489 isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_CTRL); 490 491 /* Prefetch setup */ 492 if (dpcm_decompress) 493 hwords = (ISPCCP2_LCM_HSIZE_SKIP_MIN + 494 config->hsize_count) >> 3; 495 else 496 hwords = (ISPCCP2_LCM_HSIZE_SKIP_MIN + 497 config->hsize_count) >> 2; 498 499 isp_reg_writel(isp, hwords << ISPCCP2_LCM_PREFETCH_SHIFT, 500 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_PREFETCH); 501 502 /* Video port */ 503 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL, 504 ISPCCP2_CTRL_IO_OUT_SEL | ISPCCP2_CTRL_MODE); 505 ccp2_vp_config(ccp2, ccp2_adjust_bandwidth(ccp2)); 506 507 /* Clear LCM interrupts */ 508 isp_reg_writel(isp, ISPCCP2_LCM_IRQSTATUS_OCPERROR_IRQ | 509 ISPCCP2_LCM_IRQSTATUS_EOF_IRQ, 510 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_IRQSTATUS); 511 512 /* Enable LCM interrupts */ 513 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_IRQENABLE, 514 ISPCCP2_LCM_IRQSTATUS_EOF_IRQ | 515 ISPCCP2_LCM_IRQSTATUS_OCPERROR_IRQ); 516} 517 518/* 519 * ccp2_set_inaddr - Sets memory address of input frame. 520 * @ccp2: Pointer to ISP CCP2 device 521 * @addr: 32bit memory address aligned on 32byte boundary. 522 * 523 * Configures the memory address from which the input frame is to be read. 524 */ 525static void ccp2_set_inaddr(struct isp_ccp2_device *ccp2, u32 addr) 526{ 527 struct isp_device *isp = to_isp_device(ccp2); 528 529 isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_SRC_ADDR); 530} 531 532/* ----------------------------------------------------------------------------- 533 * Interrupt handling 534 */ 535 536static void ccp2_isr_buffer(struct isp_ccp2_device *ccp2) 537{ 538 struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity); 539 struct isp_buffer *buffer; 540 541 buffer = omap3isp_video_buffer_next(&ccp2->video_in); 542 if (buffer != NULL) 543 ccp2_set_inaddr(ccp2, buffer->dma); 544 545 pipe->state |= ISP_PIPELINE_IDLE_INPUT; 546 547 if (ccp2->state == ISP_PIPELINE_STREAM_SINGLESHOT) { 548 if (isp_pipeline_ready(pipe)) 549 omap3isp_pipeline_set_stream(pipe, 550 ISP_PIPELINE_STREAM_SINGLESHOT); 551 } 552} 553 554/* 555 * omap3isp_ccp2_isr - Handle ISP CCP2 interrupts 556 * @ccp2: Pointer to ISP CCP2 device 557 * 558 * This will handle the CCP2 interrupts 559 */ 560void omap3isp_ccp2_isr(struct isp_ccp2_device *ccp2) 561{ 562 struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity); 563 struct isp_device *isp = to_isp_device(ccp2); 564 static const u32 ISPCCP2_LC01_ERROR = 565 ISPCCP2_LC01_IRQSTATUS_LC0_FIFO_OVF_IRQ | 566 ISPCCP2_LC01_IRQSTATUS_LC0_CRC_IRQ | 567 ISPCCP2_LC01_IRQSTATUS_LC0_FSP_IRQ | 568 ISPCCP2_LC01_IRQSTATUS_LC0_FW_IRQ | 569 ISPCCP2_LC01_IRQSTATUS_LC0_FSC_IRQ | 570 ISPCCP2_LC01_IRQSTATUS_LC0_SSC_IRQ; 571 u32 lcx_irqstatus, lcm_irqstatus; 572 573 /* First clear the interrupts */ 574 lcx_irqstatus = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, 575 ISPCCP2_LC01_IRQSTATUS); 576 isp_reg_writel(isp, lcx_irqstatus, OMAP3_ISP_IOMEM_CCP2, 577 ISPCCP2_LC01_IRQSTATUS); 578 579 lcm_irqstatus = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, 580 ISPCCP2_LCM_IRQSTATUS); 581 isp_reg_writel(isp, lcm_irqstatus, OMAP3_ISP_IOMEM_CCP2, 582 ISPCCP2_LCM_IRQSTATUS); 583 /* Errors */ 584 if (lcx_irqstatus & ISPCCP2_LC01_ERROR) { 585 pipe->error = true; 586 dev_dbg(isp->dev, "CCP2 err:%x\n", lcx_irqstatus); 587 return; 588 } 589 590 if (lcm_irqstatus & ISPCCP2_LCM_IRQSTATUS_OCPERROR_IRQ) { 591 pipe->error = true; 592 dev_dbg(isp->dev, "CCP2 OCP err:%x\n", lcm_irqstatus); 593 } 594 595 if (omap3isp_module_sync_is_stopping(&ccp2->wait, &ccp2->stopping)) 596 return; 597 598 /* Handle queued buffers on frame end interrupts */ 599 if (lcm_irqstatus & ISPCCP2_LCM_IRQSTATUS_EOF_IRQ) 600 ccp2_isr_buffer(ccp2); 601} 602 603/* ----------------------------------------------------------------------------- 604 * V4L2 subdev operations 605 */ 606 607static const unsigned int ccp2_fmts[] = { 608 MEDIA_BUS_FMT_SGRBG10_1X10, 609 MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, 610}; 611 612/* 613 * __ccp2_get_format - helper function for getting ccp2 format 614 * @ccp2 : Pointer to ISP CCP2 device 615 * @cfg: V4L2 subdev pad configuration 616 * @pad : pad number 617 * @which : wanted subdev format 618 * return format structure or NULL on error 619 */ 620static struct v4l2_mbus_framefmt * 621__ccp2_get_format(struct isp_ccp2_device *ccp2, struct v4l2_subdev_pad_config *cfg, 622 unsigned int pad, enum v4l2_subdev_format_whence which) 623{ 624 if (which == V4L2_SUBDEV_FORMAT_TRY) 625 return v4l2_subdev_get_try_format(&ccp2->subdev, cfg, pad); 626 else 627 return &ccp2->formats[pad]; 628} 629 630/* 631 * ccp2_try_format - Handle try format by pad subdev method 632 * @ccp2 : Pointer to ISP CCP2 device 633 * @cfg: V4L2 subdev pad configuration 634 * @pad : pad num 635 * @fmt : pointer to v4l2 mbus format structure 636 * @which : wanted subdev format 637 */ 638static void ccp2_try_format(struct isp_ccp2_device *ccp2, 639 struct v4l2_subdev_pad_config *cfg, unsigned int pad, 640 struct v4l2_mbus_framefmt *fmt, 641 enum v4l2_subdev_format_whence which) 642{ 643 struct v4l2_mbus_framefmt *format; 644 645 switch (pad) { 646 case CCP2_PAD_SINK: 647 if (fmt->code != MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8) 648 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; 649 650 if (ccp2->input == CCP2_INPUT_SENSOR) { 651 fmt->width = clamp_t(u32, fmt->width, 652 ISPCCP2_DAT_START_MIN, 653 ISPCCP2_DAT_START_MAX); 654 fmt->height = clamp_t(u32, fmt->height, 655 ISPCCP2_DAT_SIZE_MIN, 656 ISPCCP2_DAT_SIZE_MAX); 657 } else if (ccp2->input == CCP2_INPUT_MEMORY) { 658 fmt->width = clamp_t(u32, fmt->width, 659 ISPCCP2_LCM_HSIZE_COUNT_MIN, 660 ISPCCP2_LCM_HSIZE_COUNT_MAX); 661 fmt->height = clamp_t(u32, fmt->height, 662 ISPCCP2_LCM_VSIZE_MIN, 663 ISPCCP2_LCM_VSIZE_MAX); 664 } 665 break; 666 667 case CCP2_PAD_SOURCE: 668 /* Source format - copy sink format and change pixel code 669 * to SGRBG10_1X10 as we don't support CCP2 write to memory. 670 * When CCP2 write to memory feature will be added this 671 * should be changed properly. 672 */ 673 format = __ccp2_get_format(ccp2, cfg, CCP2_PAD_SINK, which); 674 memcpy(fmt, format, sizeof(*fmt)); 675 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; 676 break; 677 } 678 679 fmt->field = V4L2_FIELD_NONE; 680 fmt->colorspace = V4L2_COLORSPACE_SRGB; 681} 682 683/* 684 * ccp2_enum_mbus_code - Handle pixel format enumeration 685 * @sd : pointer to v4l2 subdev structure 686 * @cfg: V4L2 subdev pad configuration 687 * @code : pointer to v4l2_subdev_mbus_code_enum structure 688 * return -EINVAL or zero on success 689 */ 690static int ccp2_enum_mbus_code(struct v4l2_subdev *sd, 691 struct v4l2_subdev_pad_config *cfg, 692 struct v4l2_subdev_mbus_code_enum *code) 693{ 694 struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd); 695 struct v4l2_mbus_framefmt *format; 696 697 if (code->pad == CCP2_PAD_SINK) { 698 if (code->index >= ARRAY_SIZE(ccp2_fmts)) 699 return -EINVAL; 700 701 code->code = ccp2_fmts[code->index]; 702 } else { 703 if (code->index != 0) 704 return -EINVAL; 705 706 format = __ccp2_get_format(ccp2, cfg, CCP2_PAD_SINK, 707 code->which); 708 code->code = format->code; 709 } 710 711 return 0; 712} 713 714static int ccp2_enum_frame_size(struct v4l2_subdev *sd, 715 struct v4l2_subdev_pad_config *cfg, 716 struct v4l2_subdev_frame_size_enum *fse) 717{ 718 struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd); 719 struct v4l2_mbus_framefmt format; 720 721 if (fse->index != 0) 722 return -EINVAL; 723 724 format.code = fse->code; 725 format.width = 1; 726 format.height = 1; 727 ccp2_try_format(ccp2, cfg, fse->pad, &format, fse->which); 728 fse->min_width = format.width; 729 fse->min_height = format.height; 730 731 if (format.code != fse->code) 732 return -EINVAL; 733 734 format.code = fse->code; 735 format.width = -1; 736 format.height = -1; 737 ccp2_try_format(ccp2, cfg, fse->pad, &format, fse->which); 738 fse->max_width = format.width; 739 fse->max_height = format.height; 740 741 return 0; 742} 743 744/* 745 * ccp2_get_format - Handle get format by pads subdev method 746 * @sd : pointer to v4l2 subdev structure 747 * @cfg: V4L2 subdev pad configuration 748 * @fmt : pointer to v4l2 subdev format structure 749 * return -EINVAL or zero on success 750 */ 751static int ccp2_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, 752 struct v4l2_subdev_format *fmt) 753{ 754 struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd); 755 struct v4l2_mbus_framefmt *format; 756 757 format = __ccp2_get_format(ccp2, cfg, fmt->pad, fmt->which); 758 if (format == NULL) 759 return -EINVAL; 760 761 fmt->format = *format; 762 return 0; 763} 764 765/* 766 * ccp2_set_format - Handle set format by pads subdev method 767 * @sd : pointer to v4l2 subdev structure 768 * @cfg: V4L2 subdev pad configuration 769 * @fmt : pointer to v4l2 subdev format structure 770 * returns zero 771 */ 772static int ccp2_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, 773 struct v4l2_subdev_format *fmt) 774{ 775 struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd); 776 struct v4l2_mbus_framefmt *format; 777 778 format = __ccp2_get_format(ccp2, cfg, fmt->pad, fmt->which); 779 if (format == NULL) 780 return -EINVAL; 781 782 ccp2_try_format(ccp2, cfg, fmt->pad, &fmt->format, fmt->which); 783 *format = fmt->format; 784 785 /* Propagate the format from sink to source */ 786 if (fmt->pad == CCP2_PAD_SINK) { 787 format = __ccp2_get_format(ccp2, cfg, CCP2_PAD_SOURCE, 788 fmt->which); 789 *format = fmt->format; 790 ccp2_try_format(ccp2, cfg, CCP2_PAD_SOURCE, format, fmt->which); 791 } 792 793 return 0; 794} 795 796/* 797 * ccp2_init_formats - Initialize formats on all pads 798 * @sd: ISP CCP2 V4L2 subdevice 799 * @fh: V4L2 subdev file handle 800 * 801 * Initialize all pad formats with default values. If fh is not NULL, try 802 * formats are initialized on the file handle. Otherwise active formats are 803 * initialized on the device. 804 */ 805static int ccp2_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) 806{ 807 struct v4l2_subdev_format format; 808 809 memset(&format, 0, sizeof(format)); 810 format.pad = CCP2_PAD_SINK; 811 format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; 812 format.format.code = MEDIA_BUS_FMT_SGRBG10_1X10; 813 format.format.width = 4096; 814 format.format.height = 4096; 815 ccp2_set_format(sd, fh ? fh->pad : NULL, &format); 816 817 return 0; 818} 819 820/* 821 * ccp2_s_stream - Enable/Disable streaming on ccp2 subdev 822 * @sd : pointer to v4l2 subdev structure 823 * @enable: 1 == Enable, 0 == Disable 824 * return zero 825 */ 826static int ccp2_s_stream(struct v4l2_subdev *sd, int enable) 827{ 828 struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd); 829 struct isp_device *isp = to_isp_device(ccp2); 830 struct device *dev = to_device(ccp2); 831 int ret; 832 833 if (ccp2->state == ISP_PIPELINE_STREAM_STOPPED) { 834 if (enable == ISP_PIPELINE_STREAM_STOPPED) 835 return 0; 836 atomic_set(&ccp2->stopping, 0); 837 } 838 839 switch (enable) { 840 case ISP_PIPELINE_STREAM_CONTINUOUS: 841 if (ccp2->phy) { 842 ret = omap3isp_csiphy_acquire(ccp2->phy, &sd->entity); 843 if (ret < 0) 844 return ret; 845 } 846 847 ccp2_if_configure(ccp2); 848 ccp2_print_status(ccp2); 849 850 /* Enable CSI1/CCP2 interface */ 851 ret = ccp2_if_enable(ccp2, 1); 852 if (ret < 0) { 853 if (ccp2->phy) 854 omap3isp_csiphy_release(ccp2->phy); 855 return ret; 856 } 857 break; 858 859 case ISP_PIPELINE_STREAM_SINGLESHOT: 860 if (ccp2->state != ISP_PIPELINE_STREAM_SINGLESHOT) { 861 struct v4l2_mbus_framefmt *format; 862 863 format = &ccp2->formats[CCP2_PAD_SINK]; 864 865 ccp2->mem_cfg.hsize_count = format->width; 866 ccp2->mem_cfg.vsize_count = format->height; 867 ccp2->mem_cfg.src_ofst = 0; 868 869 ccp2_mem_configure(ccp2, &ccp2->mem_cfg); 870 omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CSI1_READ); 871 ccp2_print_status(ccp2); 872 } 873 ccp2_mem_enable(ccp2, 1); 874 break; 875 876 case ISP_PIPELINE_STREAM_STOPPED: 877 if (omap3isp_module_sync_idle(&sd->entity, &ccp2->wait, 878 &ccp2->stopping)) 879 dev_dbg(dev, "%s: module stop timeout.\n", sd->name); 880 if (ccp2->input == CCP2_INPUT_MEMORY) { 881 ccp2_mem_enable(ccp2, 0); 882 omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_CSI1_READ); 883 } else if (ccp2->input == CCP2_INPUT_SENSOR) { 884 /* Disable CSI1/CCP2 interface */ 885 ccp2_if_enable(ccp2, 0); 886 if (ccp2->phy) 887 omap3isp_csiphy_release(ccp2->phy); 888 } 889 break; 890 } 891 892 ccp2->state = enable; 893 return 0; 894} 895 896/* subdev video operations */ 897static const struct v4l2_subdev_video_ops ccp2_sd_video_ops = { 898 .s_stream = ccp2_s_stream, 899}; 900 901/* subdev pad operations */ 902static const struct v4l2_subdev_pad_ops ccp2_sd_pad_ops = { 903 .enum_mbus_code = ccp2_enum_mbus_code, 904 .enum_frame_size = ccp2_enum_frame_size, 905 .get_fmt = ccp2_get_format, 906 .set_fmt = ccp2_set_format, 907}; 908 909/* subdev operations */ 910static const struct v4l2_subdev_ops ccp2_sd_ops = { 911 .video = &ccp2_sd_video_ops, 912 .pad = &ccp2_sd_pad_ops, 913}; 914 915/* subdev internal operations */ 916static const struct v4l2_subdev_internal_ops ccp2_sd_internal_ops = { 917 .open = ccp2_init_formats, 918}; 919 920/* -------------------------------------------------------------------------- 921 * ISP ccp2 video device node 922 */ 923 924/* 925 * ccp2_video_queue - Queue video buffer. 926 * @video : Pointer to isp video structure 927 * @buffer: Pointer to isp_buffer structure 928 * return -EIO or zero on success 929 */ 930static int ccp2_video_queue(struct isp_video *video, struct isp_buffer *buffer) 931{ 932 struct isp_ccp2_device *ccp2 = &video->isp->isp_ccp2; 933 934 ccp2_set_inaddr(ccp2, buffer->dma); 935 return 0; 936} 937 938static const struct isp_video_operations ccp2_video_ops = { 939 .queue = ccp2_video_queue, 940}; 941 942/* ----------------------------------------------------------------------------- 943 * Media entity operations 944 */ 945 946/* 947 * ccp2_link_setup - Setup ccp2 connections. 948 * @entity : Pointer to media entity structure 949 * @local : Pointer to local pad array 950 * @remote : Pointer to remote pad array 951 * @flags : Link flags 952 * return -EINVAL on error or zero on success 953 */ 954static int ccp2_link_setup(struct media_entity *entity, 955 const struct media_pad *local, 956 const struct media_pad *remote, u32 flags) 957{ 958 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); 959 struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd); 960 unsigned int index = local->index; 961 962 /* FIXME: this is actually a hack! */ 963 if (is_media_entity_v4l2_subdev(remote->entity)) 964 index |= 2 << 16; 965 966 switch (index) { 967 case CCP2_PAD_SINK: 968 /* read from memory */ 969 if (flags & MEDIA_LNK_FL_ENABLED) { 970 if (ccp2->input == CCP2_INPUT_SENSOR) 971 return -EBUSY; 972 ccp2->input = CCP2_INPUT_MEMORY; 973 } else { 974 if (ccp2->input == CCP2_INPUT_MEMORY) 975 ccp2->input = CCP2_INPUT_NONE; 976 } 977 break; 978 979 case CCP2_PAD_SINK | 2 << 16: 980 /* read from sensor/phy */ 981 if (flags & MEDIA_LNK_FL_ENABLED) { 982 if (ccp2->input == CCP2_INPUT_MEMORY) 983 return -EBUSY; 984 ccp2->input = CCP2_INPUT_SENSOR; 985 } else { 986 if (ccp2->input == CCP2_INPUT_SENSOR) 987 ccp2->input = CCP2_INPUT_NONE; 988 } break; 989 990 case CCP2_PAD_SOURCE | 2 << 16: 991 /* write to video port/ccdc */ 992 if (flags & MEDIA_LNK_FL_ENABLED) 993 ccp2->output = CCP2_OUTPUT_CCDC; 994 else 995 ccp2->output = CCP2_OUTPUT_NONE; 996 break; 997 998 default: 999 return -EINVAL; 1000 } 1001 1002 return 0; 1003} 1004 1005/* media operations */ 1006static const struct media_entity_operations ccp2_media_ops = { 1007 .link_setup = ccp2_link_setup, 1008 .link_validate = v4l2_subdev_link_validate, 1009}; 1010 1011/* 1012 * omap3isp_ccp2_unregister_entities - Unregister media entities: subdev 1013 * @ccp2: Pointer to ISP CCP2 device 1014 */ 1015void omap3isp_ccp2_unregister_entities(struct isp_ccp2_device *ccp2) 1016{ 1017 v4l2_device_unregister_subdev(&ccp2->subdev); 1018 omap3isp_video_unregister(&ccp2->video_in); 1019} 1020 1021/* 1022 * omap3isp_ccp2_register_entities - Register the subdev media entity 1023 * @ccp2: Pointer to ISP CCP2 device 1024 * @vdev: Pointer to v4l device 1025 * return negative error code or zero on success 1026 */ 1027 1028int omap3isp_ccp2_register_entities(struct isp_ccp2_device *ccp2, 1029 struct v4l2_device *vdev) 1030{ 1031 int ret; 1032 1033 /* Register the subdev and video nodes. */ 1034 ccp2->subdev.dev = vdev->mdev->dev; 1035 ret = v4l2_device_register_subdev(vdev, &ccp2->subdev); 1036 if (ret < 0) 1037 goto error; 1038 1039 ret = omap3isp_video_register(&ccp2->video_in, vdev); 1040 if (ret < 0) 1041 goto error; 1042 1043 return 0; 1044 1045error: 1046 omap3isp_ccp2_unregister_entities(ccp2); 1047 return ret; 1048} 1049 1050/* ----------------------------------------------------------------------------- 1051 * ISP ccp2 initialisation and cleanup 1052 */ 1053 1054/* 1055 * ccp2_init_entities - Initialize ccp2 subdev and media entity. 1056 * @ccp2: Pointer to ISP CCP2 device 1057 * return negative error code or zero on success 1058 */ 1059static int ccp2_init_entities(struct isp_ccp2_device *ccp2) 1060{ 1061 struct v4l2_subdev *sd = &ccp2->subdev; 1062 struct media_pad *pads = ccp2->pads; 1063 struct media_entity *me = &sd->entity; 1064 int ret; 1065 1066 ccp2->input = CCP2_INPUT_NONE; 1067 ccp2->output = CCP2_OUTPUT_NONE; 1068 1069 v4l2_subdev_init(sd, &ccp2_sd_ops); 1070 sd->internal_ops = &ccp2_sd_internal_ops; 1071 strscpy(sd->name, "OMAP3 ISP CCP2", sizeof(sd->name)); 1072 sd->grp_id = 1 << 16; /* group ID for isp subdevs */ 1073 v4l2_set_subdevdata(sd, ccp2); 1074 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1075 1076 pads[CCP2_PAD_SINK].flags = MEDIA_PAD_FL_SINK 1077 | MEDIA_PAD_FL_MUST_CONNECT; 1078 pads[CCP2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; 1079 1080 me->ops = &ccp2_media_ops; 1081 ret = media_entity_pads_init(me, CCP2_PADS_NUM, pads); 1082 if (ret < 0) 1083 return ret; 1084 1085 ccp2_init_formats(sd, NULL); 1086 1087 /* 1088 * The CCP2 has weird line alignment requirements, possibly caused by 1089 * DPCM8 decompression. Line length for data read from memory must be a 1090 * multiple of 128 bits (16 bytes) in continuous mode (when no padding 1091 * is present at end of lines). Additionally, if padding is used, the 1092 * padded line length must be a multiple of 32 bytes. To simplify the 1093 * implementation we use a fixed 32 bytes alignment regardless of the 1094 * input format and width. If strict 128 bits alignment support is 1095 * required ispvideo will need to be made aware of this special dual 1096 * alignment requirements. 1097 */ 1098 ccp2->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 1099 ccp2->video_in.bpl_alignment = 32; 1100 ccp2->video_in.bpl_max = 0xffffffe0; 1101 ccp2->video_in.isp = to_isp_device(ccp2); 1102 ccp2->video_in.ops = &ccp2_video_ops; 1103 ccp2->video_in.capture_mem = PAGE_ALIGN(4096 * 4096) * 3; 1104 1105 ret = omap3isp_video_init(&ccp2->video_in, "CCP2"); 1106 if (ret < 0) 1107 goto error; 1108 1109 return 0; 1110 1111error: 1112 media_entity_cleanup(&ccp2->subdev.entity); 1113 return ret; 1114} 1115 1116/* 1117 * omap3isp_ccp2_init - CCP2 initialization. 1118 * @isp : Pointer to ISP device 1119 * return negative error code or zero on success 1120 */ 1121int omap3isp_ccp2_init(struct isp_device *isp) 1122{ 1123 struct isp_ccp2_device *ccp2 = &isp->isp_ccp2; 1124 int ret; 1125 1126 init_waitqueue_head(&ccp2->wait); 1127 1128 /* 1129 * On the OMAP34xx the CSI1 receiver is operated in the CSIb IO 1130 * complex, which is powered by vdds_csib power rail. Hence the 1131 * request for the regulator. 1132 * 1133 * On the OMAP36xx, the CCP2 uses the CSI PHY1 or PHY2, shared with 1134 * the CSI2c or CSI2a receivers. The PHY then needs to be explicitly 1135 * configured. 1136 * 1137 * TODO: Don't hardcode the usage of PHY1 (shared with CSI2c). 1138 */ 1139 if (isp->revision == ISP_REVISION_2_0) { 1140 ccp2->vdds_csib = devm_regulator_get(isp->dev, "vdds_csib"); 1141 if (IS_ERR(ccp2->vdds_csib)) { 1142 if (PTR_ERR(ccp2->vdds_csib) == -EPROBE_DEFER) { 1143 dev_dbg(isp->dev, 1144 "Can't get regulator vdds_csib, deferring probing\n"); 1145 return -EPROBE_DEFER; 1146 } 1147 dev_dbg(isp->dev, 1148 "Could not get regulator vdds_csib\n"); 1149 ccp2->vdds_csib = NULL; 1150 } 1151 ccp2->phy = &isp->isp_csiphy2; 1152 } else if (isp->revision == ISP_REVISION_15_0) { 1153 ccp2->phy = &isp->isp_csiphy1; 1154 } 1155 1156 ret = ccp2_init_entities(ccp2); 1157 if (ret < 0) 1158 return ret; 1159 1160 ccp2_reset(ccp2); 1161 return 0; 1162} 1163 1164/* 1165 * omap3isp_ccp2_cleanup - CCP2 un-initialization 1166 * @isp : Pointer to ISP device 1167 */ 1168void omap3isp_ccp2_cleanup(struct isp_device *isp) 1169{ 1170 struct isp_ccp2_device *ccp2 = &isp->isp_ccp2; 1171 1172 omap3isp_video_cleanup(&ccp2->video_in); 1173 media_entity_cleanup(&ccp2->subdev.entity); 1174} 1175