1/* 2 * ispresizer.c 3 * 4 * TI OMAP3 ISP - Resizer module 5 * 6 * Copyright (C) 2010 Nokia Corporation 7 * Copyright (C) 2009 Texas Instruments, Inc 8 * 9 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> 10 * Sakari Ailus <sakari.ailus@iki.fi> 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License version 2 as 14 * published by the Free Software Foundation. 15 */ 16 17#include <linux/device.h> 18#include <linux/mm.h> 19#include <linux/module.h> 20 21#include "isp.h" 22#include "ispreg.h" 23#include "ispresizer.h" 24 25/* 26 * Resizer Constants 27 */ 28#define MIN_RESIZE_VALUE 64 29#define MID_RESIZE_VALUE 512 30#define MAX_RESIZE_VALUE 1024 31 32#define MIN_IN_WIDTH 32 33#define MIN_IN_HEIGHT 32 34#define MAX_IN_WIDTH_MEMORY_MODE 4095 35#define MAX_IN_WIDTH_ONTHEFLY_MODE_ES1 1280 36#define MAX_IN_WIDTH_ONTHEFLY_MODE_ES2 4095 37#define MAX_IN_HEIGHT 4095 38 39#define MIN_OUT_WIDTH 16 40#define MIN_OUT_HEIGHT 2 41#define MAX_OUT_HEIGHT 4095 42 43/* 44 * Resizer Use Constraints 45 * "TRM ES3.1, table 12-46" 46 */ 47#define MAX_4TAP_OUT_WIDTH_ES1 1280 48#define MAX_7TAP_OUT_WIDTH_ES1 640 49#define MAX_4TAP_OUT_WIDTH_ES2 3312 50#define MAX_7TAP_OUT_WIDTH_ES2 1650 51#define MAX_4TAP_OUT_WIDTH_3630 4096 52#define MAX_7TAP_OUT_WIDTH_3630 2048 53 54/* 55 * Constants for ratio calculation 56 */ 57#define RESIZE_DIVISOR 256 58#define DEFAULT_PHASE 1 59 60/* 61 * Default (and only) configuration of filter coefficients. 62 * 7-tap mode is for scale factors 0.25x to 0.5x. 63 * 4-tap mode is for scale factors 0.5x to 4.0x. 64 * There shouldn't be any reason to recalculate these, EVER. 65 */ 66static const struct isprsz_coef filter_coefs = { 67 /* For 8-phase 4-tap horizontal filter: */ 68 { 69 0x0000, 0x0100, 0x0000, 0x0000, 70 0x03FA, 0x00F6, 0x0010, 0x0000, 71 0x03F9, 0x00DB, 0x002C, 0x0000, 72 0x03FB, 0x00B3, 0x0053, 0x03FF, 73 0x03FD, 0x0082, 0x0084, 0x03FD, 74 0x03FF, 0x0053, 0x00B3, 0x03FB, 75 0x0000, 0x002C, 0x00DB, 0x03F9, 76 0x0000, 0x0010, 0x00F6, 0x03FA 77 }, 78 /* For 8-phase 4-tap vertical filter: */ 79 { 80 0x0000, 0x0100, 0x0000, 0x0000, 81 0x03FA, 0x00F6, 0x0010, 0x0000, 82 0x03F9, 0x00DB, 0x002C, 0x0000, 83 0x03FB, 0x00B3, 0x0053, 0x03FF, 84 0x03FD, 0x0082, 0x0084, 0x03FD, 85 0x03FF, 0x0053, 0x00B3, 0x03FB, 86 0x0000, 0x002C, 0x00DB, 0x03F9, 87 0x0000, 0x0010, 0x00F6, 0x03FA 88 }, 89 /* For 4-phase 7-tap horizontal filter: */ 90 #define DUMMY 0 91 { 92 0x0004, 0x0023, 0x005A, 0x0058, 0x0023, 0x0004, 0x0000, DUMMY, 93 0x0002, 0x0018, 0x004d, 0x0060, 0x0031, 0x0008, 0x0000, DUMMY, 94 0x0001, 0x000f, 0x003f, 0x0062, 0x003f, 0x000f, 0x0001, DUMMY, 95 0x0000, 0x0008, 0x0031, 0x0060, 0x004d, 0x0018, 0x0002, DUMMY 96 }, 97 /* For 4-phase 7-tap vertical filter: */ 98 { 99 0x0004, 0x0023, 0x005A, 0x0058, 0x0023, 0x0004, 0x0000, DUMMY, 100 0x0002, 0x0018, 0x004d, 0x0060, 0x0031, 0x0008, 0x0000, DUMMY, 101 0x0001, 0x000f, 0x003f, 0x0062, 0x003f, 0x000f, 0x0001, DUMMY, 102 0x0000, 0x0008, 0x0031, 0x0060, 0x004d, 0x0018, 0x0002, DUMMY 103 } 104 /* 105 * The dummy padding is required in 7-tap mode because of how the 106 * registers are arranged physically. 107 */ 108 #undef DUMMY 109}; 110 111/* 112 * __resizer_get_format - helper function for getting resizer format 113 * @res : pointer to resizer private structure 114 * @pad : pad number 115 * @cfg: V4L2 subdev pad configuration 116 * @which : wanted subdev format 117 * return zero 118 */ 119static struct v4l2_mbus_framefmt * 120__resizer_get_format(struct isp_res_device *res, struct v4l2_subdev_pad_config *cfg, 121 unsigned int pad, enum v4l2_subdev_format_whence which) 122{ 123 if (which == V4L2_SUBDEV_FORMAT_TRY) 124 return v4l2_subdev_get_try_format(&res->subdev, cfg, pad); 125 else 126 return &res->formats[pad]; 127} 128 129/* 130 * __resizer_get_crop - helper function for getting resizer crop rectangle 131 * @res : pointer to resizer private structure 132 * @cfg: V4L2 subdev pad configuration 133 * @which : wanted subdev crop rectangle 134 */ 135static struct v4l2_rect * 136__resizer_get_crop(struct isp_res_device *res, struct v4l2_subdev_pad_config *cfg, 137 enum v4l2_subdev_format_whence which) 138{ 139 if (which == V4L2_SUBDEV_FORMAT_TRY) 140 return v4l2_subdev_get_try_crop(&res->subdev, cfg, RESZ_PAD_SINK); 141 else 142 return &res->crop.request; 143} 144 145/* 146 * resizer_set_filters - Set resizer filters 147 * @res: Device context. 148 * @h_coeff: horizontal coefficient 149 * @v_coeff: vertical coefficient 150 * Return none 151 */ 152static void resizer_set_filters(struct isp_res_device *res, const u16 *h_coeff, 153 const u16 *v_coeff) 154{ 155 struct isp_device *isp = to_isp_device(res); 156 u32 startaddr_h, startaddr_v, tmp_h, tmp_v; 157 int i; 158 159 startaddr_h = ISPRSZ_HFILT10; 160 startaddr_v = ISPRSZ_VFILT10; 161 162 for (i = 0; i < COEFF_CNT; i += 2) { 163 tmp_h = h_coeff[i] | 164 (h_coeff[i + 1] << ISPRSZ_HFILT_COEF1_SHIFT); 165 tmp_v = v_coeff[i] | 166 (v_coeff[i + 1] << ISPRSZ_VFILT_COEF1_SHIFT); 167 isp_reg_writel(isp, tmp_h, OMAP3_ISP_IOMEM_RESZ, startaddr_h); 168 isp_reg_writel(isp, tmp_v, OMAP3_ISP_IOMEM_RESZ, startaddr_v); 169 startaddr_h += 4; 170 startaddr_v += 4; 171 } 172} 173 174/* 175 * resizer_set_bilinear - Chrominance horizontal algorithm select 176 * @res: Device context. 177 * @type: Filtering interpolation type. 178 * 179 * Filtering that is same as luminance processing is 180 * intended only for downsampling, and bilinear interpolation 181 * is intended only for upsampling. 182 */ 183static void resizer_set_bilinear(struct isp_res_device *res, 184 enum resizer_chroma_algo type) 185{ 186 struct isp_device *isp = to_isp_device(res); 187 188 if (type == RSZ_BILINEAR) 189 isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, 190 ISPRSZ_CNT_CBILIN); 191 else 192 isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, 193 ISPRSZ_CNT_CBILIN); 194} 195 196/* 197 * resizer_set_ycpos - Luminance and chrominance order 198 * @res: Device context. 199 * @pixelcode: pixel code. 200 */ 201static void resizer_set_ycpos(struct isp_res_device *res, u32 pixelcode) 202{ 203 struct isp_device *isp = to_isp_device(res); 204 205 switch (pixelcode) { 206 case MEDIA_BUS_FMT_YUYV8_1X16: 207 isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, 208 ISPRSZ_CNT_YCPOS); 209 break; 210 case MEDIA_BUS_FMT_UYVY8_1X16: 211 isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, 212 ISPRSZ_CNT_YCPOS); 213 break; 214 default: 215 return; 216 } 217} 218 219/* 220 * resizer_set_phase - Setup horizontal and vertical starting phase 221 * @res: Device context. 222 * @h_phase: horizontal phase parameters. 223 * @v_phase: vertical phase parameters. 224 * 225 * Horizontal and vertical phase range is 0 to 7 226 */ 227static void resizer_set_phase(struct isp_res_device *res, u32 h_phase, 228 u32 v_phase) 229{ 230 struct isp_device *isp = to_isp_device(res); 231 u32 rgval; 232 233 rgval = isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) & 234 ~(ISPRSZ_CNT_HSTPH_MASK | ISPRSZ_CNT_VSTPH_MASK); 235 rgval |= (h_phase << ISPRSZ_CNT_HSTPH_SHIFT) & ISPRSZ_CNT_HSTPH_MASK; 236 rgval |= (v_phase << ISPRSZ_CNT_VSTPH_SHIFT) & ISPRSZ_CNT_VSTPH_MASK; 237 238 isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT); 239} 240 241/* 242 * resizer_set_luma - Setup luminance enhancer parameters 243 * @res: Device context. 244 * @luma: Structure for luminance enhancer parameters. 245 * 246 * Algorithm select: 247 * 0x0: Disable 248 * 0x1: [-1 2 -1]/2 high-pass filter 249 * 0x2: [-1 -2 6 -2 -1]/4 high-pass filter 250 * 251 * Maximum gain: 252 * The data is coded in U4Q4 representation. 253 * 254 * Slope: 255 * The data is coded in U4Q4 representation. 256 * 257 * Coring offset: 258 * The data is coded in U8Q0 representation. 259 * 260 * The new luminance value is computed as: 261 * Y += HPF(Y) x max(GAIN, (HPF(Y) - CORE) x SLOP + 8) >> 4. 262 */ 263static void resizer_set_luma(struct isp_res_device *res, 264 struct resizer_luma_yenh *luma) 265{ 266 struct isp_device *isp = to_isp_device(res); 267 u32 rgval; 268 269 rgval = (luma->algo << ISPRSZ_YENH_ALGO_SHIFT) 270 & ISPRSZ_YENH_ALGO_MASK; 271 rgval |= (luma->gain << ISPRSZ_YENH_GAIN_SHIFT) 272 & ISPRSZ_YENH_GAIN_MASK; 273 rgval |= (luma->slope << ISPRSZ_YENH_SLOP_SHIFT) 274 & ISPRSZ_YENH_SLOP_MASK; 275 rgval |= (luma->core << ISPRSZ_YENH_CORE_SHIFT) 276 & ISPRSZ_YENH_CORE_MASK; 277 278 isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_YENH); 279} 280 281/* 282 * resizer_set_source - Input source select 283 * @res: Device context. 284 * @source: Input source type 285 * 286 * If this field is set to RESIZER_INPUT_VP, the resizer input is fed from 287 * Preview/CCDC engine, otherwise from memory. 288 */ 289static void resizer_set_source(struct isp_res_device *res, 290 enum resizer_input_entity source) 291{ 292 struct isp_device *isp = to_isp_device(res); 293 294 if (source == RESIZER_INPUT_MEMORY) 295 isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, 296 ISPRSZ_CNT_INPSRC); 297 else 298 isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, 299 ISPRSZ_CNT_INPSRC); 300} 301 302/* 303 * resizer_set_ratio - Setup horizontal and vertical resizing value 304 * @res: Device context. 305 * @ratio: Structure for ratio parameters. 306 * 307 * Resizing range from 64 to 1024 308 */ 309static void resizer_set_ratio(struct isp_res_device *res, 310 const struct resizer_ratio *ratio) 311{ 312 struct isp_device *isp = to_isp_device(res); 313 const u16 *h_filter, *v_filter; 314 u32 rgval; 315 316 rgval = isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) & 317 ~(ISPRSZ_CNT_HRSZ_MASK | ISPRSZ_CNT_VRSZ_MASK); 318 rgval |= ((ratio->horz - 1) << ISPRSZ_CNT_HRSZ_SHIFT) 319 & ISPRSZ_CNT_HRSZ_MASK; 320 rgval |= ((ratio->vert - 1) << ISPRSZ_CNT_VRSZ_SHIFT) 321 & ISPRSZ_CNT_VRSZ_MASK; 322 isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT); 323 324 /* prepare horizontal filter coefficients */ 325 if (ratio->horz > MID_RESIZE_VALUE) 326 h_filter = &filter_coefs.h_filter_coef_7tap[0]; 327 else 328 h_filter = &filter_coefs.h_filter_coef_4tap[0]; 329 330 /* prepare vertical filter coefficients */ 331 if (ratio->vert > MID_RESIZE_VALUE) 332 v_filter = &filter_coefs.v_filter_coef_7tap[0]; 333 else 334 v_filter = &filter_coefs.v_filter_coef_4tap[0]; 335 336 resizer_set_filters(res, h_filter, v_filter); 337} 338 339/* 340 * resizer_set_dst_size - Setup the output height and width 341 * @res: Device context. 342 * @width: Output width. 343 * @height: Output height. 344 * 345 * Width : 346 * The value must be EVEN. 347 * 348 * Height: 349 * The number of bytes written to SDRAM must be 350 * a multiple of 16-bytes if the vertical resizing factor 351 * is greater than 1x (upsizing) 352 */ 353static void resizer_set_output_size(struct isp_res_device *res, 354 u32 width, u32 height) 355{ 356 struct isp_device *isp = to_isp_device(res); 357 u32 rgval; 358 359 rgval = (width << ISPRSZ_OUT_SIZE_HORZ_SHIFT) 360 & ISPRSZ_OUT_SIZE_HORZ_MASK; 361 rgval |= (height << ISPRSZ_OUT_SIZE_VERT_SHIFT) 362 & ISPRSZ_OUT_SIZE_VERT_MASK; 363 isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_OUT_SIZE); 364} 365 366/* 367 * resizer_set_output_offset - Setup memory offset for the output lines. 368 * @res: Device context. 369 * @offset: Memory offset. 370 * 371 * The 5 LSBs are forced to be zeros by the hardware to align on a 32-byte 372 * boundary; the 5 LSBs are read-only. For optimal use of SDRAM bandwidth, 373 * the SDRAM line offset must be set on a 256-byte boundary 374 */ 375static void resizer_set_output_offset(struct isp_res_device *res, u32 offset) 376{ 377 struct isp_device *isp = to_isp_device(res); 378 379 isp_reg_writel(isp, offset, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTOFF); 380} 381 382/* 383 * resizer_set_start - Setup vertical and horizontal start position 384 * @res: Device context. 385 * @left: Horizontal start position. 386 * @top: Vertical start position. 387 * 388 * Vertical start line: 389 * This field makes sense only when the resizer obtains its input 390 * from the preview engine/CCDC 391 * 392 * Horizontal start pixel: 393 * Pixels are coded on 16 bits for YUV and 8 bits for color separate data. 394 * When the resizer gets its input from SDRAM, this field must be set 395 * to <= 15 for YUV 16-bit data and <= 31 for 8-bit color separate data 396 */ 397static void resizer_set_start(struct isp_res_device *res, u32 left, u32 top) 398{ 399 struct isp_device *isp = to_isp_device(res); 400 u32 rgval; 401 402 rgval = (left << ISPRSZ_IN_START_HORZ_ST_SHIFT) 403 & ISPRSZ_IN_START_HORZ_ST_MASK; 404 rgval |= (top << ISPRSZ_IN_START_VERT_ST_SHIFT) 405 & ISPRSZ_IN_START_VERT_ST_MASK; 406 407 isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_START); 408} 409 410/* 411 * resizer_set_input_size - Setup the input size 412 * @res: Device context. 413 * @width: The range is 0 to 4095 pixels 414 * @height: The range is 0 to 4095 lines 415 */ 416static void resizer_set_input_size(struct isp_res_device *res, 417 u32 width, u32 height) 418{ 419 struct isp_device *isp = to_isp_device(res); 420 u32 rgval; 421 422 rgval = (width << ISPRSZ_IN_SIZE_HORZ_SHIFT) 423 & ISPRSZ_IN_SIZE_HORZ_MASK; 424 rgval |= (height << ISPRSZ_IN_SIZE_VERT_SHIFT) 425 & ISPRSZ_IN_SIZE_VERT_MASK; 426 427 isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_SIZE); 428} 429 430/* 431 * resizer_set_src_offs - Setup the memory offset for the input lines 432 * @res: Device context. 433 * @offset: Memory offset. 434 * 435 * The 5 LSBs are forced to be zeros by the hardware to align on a 32-byte 436 * boundary; the 5 LSBs are read-only. This field must be programmed to be 437 * 0x0 if the resizer input is from preview engine/CCDC. 438 */ 439static void resizer_set_input_offset(struct isp_res_device *res, u32 offset) 440{ 441 struct isp_device *isp = to_isp_device(res); 442 443 isp_reg_writel(isp, offset, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INOFF); 444} 445 446/* 447 * resizer_set_intype - Input type select 448 * @res: Device context. 449 * @type: Pixel format type. 450 */ 451static void resizer_set_intype(struct isp_res_device *res, 452 enum resizer_colors_type type) 453{ 454 struct isp_device *isp = to_isp_device(res); 455 456 if (type == RSZ_COLOR8) 457 isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, 458 ISPRSZ_CNT_INPTYP); 459 else 460 isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, 461 ISPRSZ_CNT_INPTYP); 462} 463 464/* 465 * __resizer_set_inaddr - Helper function for set input address 466 * @res : pointer to resizer private data structure 467 * @addr: input address 468 * return none 469 */ 470static void __resizer_set_inaddr(struct isp_res_device *res, u32 addr) 471{ 472 struct isp_device *isp = to_isp_device(res); 473 474 isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INADD); 475} 476 477/* 478 * The data rate at the horizontal resizer output must not exceed half the 479 * functional clock or 100 MP/s, whichever is lower. According to the TRM 480 * there's no similar requirement for the vertical resizer output. However 481 * experience showed that vertical upscaling by 4 leads to SBL overflows (with 482 * data rates at the resizer output exceeding 300 MP/s). Limiting the resizer 483 * output data rate to the functional clock or 200 MP/s, whichever is lower, 484 * seems to get rid of SBL overflows. 485 * 486 * The maximum data rate at the output of the horizontal resizer can thus be 487 * computed with 488 * 489 * max intermediate rate <= L3 clock * input height / output height 490 * max intermediate rate <= L3 clock / 2 491 * 492 * The maximum data rate at the resizer input is then 493 * 494 * max input rate <= max intermediate rate * input width / output width 495 * 496 * where the input width and height are the resizer input crop rectangle size. 497 * The TRM doesn't clearly explain if that's a maximum instant data rate or a 498 * maximum average data rate. 499 */ 500void omap3isp_resizer_max_rate(struct isp_res_device *res, 501 unsigned int *max_rate) 502{ 503 struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity); 504 const struct v4l2_mbus_framefmt *ofmt = &res->formats[RESZ_PAD_SOURCE]; 505 unsigned long limit = min(pipe->l3_ick, 200000000UL); 506 unsigned long clock; 507 508 clock = div_u64((u64)limit * res->crop.active.height, ofmt->height); 509 clock = min(clock, limit / 2); 510 *max_rate = div_u64((u64)clock * res->crop.active.width, ofmt->width); 511} 512 513/* 514 * When the resizer processes images from memory, the driver must slow down read 515 * requests on the input to at least comply with the internal data rate 516 * requirements. If the application real-time requirements can cope with slower 517 * processing, the resizer can be slowed down even more to put less pressure on 518 * the overall system. 519 * 520 * When the resizer processes images on the fly (either from the CCDC or the 521 * preview module), the same data rate requirements apply but they can't be 522 * enforced at the resizer level. The image input module (sensor, CCP2 or 523 * preview module) must not provide image data faster than the resizer can 524 * process. 525 * 526 * For live image pipelines, the data rate is set by the frame format, size and 527 * rate. The sensor output frame rate must not exceed the maximum resizer data 528 * rate. 529 * 530 * The resizer slows down read requests by inserting wait cycles in the SBL 531 * requests. The maximum number of 256-byte requests per second can be computed 532 * as (the data rate is multiplied by 2 to convert from pixels per second to 533 * bytes per second) 534 * 535 * request per second = data rate * 2 / 256 536 * cycles per request = cycles per second / requests per second 537 * 538 * The number of cycles per second is controlled by the L3 clock, leading to 539 * 540 * cycles per request = L3 frequency / 2 * 256 / data rate 541 */ 542static void resizer_adjust_bandwidth(struct isp_res_device *res) 543{ 544 struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity); 545 struct isp_device *isp = to_isp_device(res); 546 unsigned long l3_ick = pipe->l3_ick; 547 struct v4l2_fract *timeperframe; 548 unsigned int cycles_per_frame; 549 unsigned int requests_per_frame; 550 unsigned int cycles_per_request; 551 unsigned int granularity; 552 unsigned int minimum; 553 unsigned int maximum; 554 unsigned int value; 555 556 if (res->input != RESIZER_INPUT_MEMORY) { 557 isp_reg_clr(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP, 558 ISPSBL_SDR_REQ_RSZ_EXP_MASK); 559 return; 560 } 561 562 switch (isp->revision) { 563 case ISP_REVISION_1_0: 564 case ISP_REVISION_2_0: 565 default: 566 granularity = 1024; 567 break; 568 569 case ISP_REVISION_15_0: 570 granularity = 32; 571 break; 572 } 573 574 /* Compute the minimum number of cycles per request, based on the 575 * pipeline maximum data rate. This is an absolute lower bound if we 576 * don't want SBL overflows, so round the value up. 577 */ 578 cycles_per_request = div_u64((u64)l3_ick / 2 * 256 + pipe->max_rate - 1, 579 pipe->max_rate); 580 minimum = DIV_ROUND_UP(cycles_per_request, granularity); 581 582 /* Compute the maximum number of cycles per request, based on the 583 * requested frame rate. This is a soft upper bound to achieve a frame 584 * rate equal or higher than the requested value, so round the value 585 * down. 586 */ 587 timeperframe = &pipe->max_timeperframe; 588 589 requests_per_frame = DIV_ROUND_UP(res->crop.active.width * 2, 256) 590 * res->crop.active.height; 591 cycles_per_frame = div_u64((u64)l3_ick * timeperframe->numerator, 592 timeperframe->denominator); 593 cycles_per_request = cycles_per_frame / requests_per_frame; 594 595 maximum = cycles_per_request / granularity; 596 597 value = max(minimum, maximum); 598 599 dev_dbg(isp->dev, "%s: cycles per request = %u\n", __func__, value); 600 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP, 601 ISPSBL_SDR_REQ_RSZ_EXP_MASK, 602 value << ISPSBL_SDR_REQ_RSZ_EXP_SHIFT); 603} 604 605/* 606 * omap3isp_resizer_busy - Checks if ISP resizer is busy. 607 * 608 * Returns busy field from ISPRSZ_PCR register. 609 */ 610int omap3isp_resizer_busy(struct isp_res_device *res) 611{ 612 struct isp_device *isp = to_isp_device(res); 613 614 return isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR) & 615 ISPRSZ_PCR_BUSY; 616} 617 618/* 619 * resizer_set_inaddr - Sets the memory address of the input frame. 620 * @addr: 32bit memory address aligned on 32byte boundary. 621 */ 622static void resizer_set_inaddr(struct isp_res_device *res, u32 addr) 623{ 624 res->addr_base = addr; 625 626 /* This will handle crop settings in stream off state */ 627 if (res->crop_offset) 628 addr += res->crop_offset & ~0x1f; 629 630 __resizer_set_inaddr(res, addr); 631} 632 633/* 634 * Configures the memory address to which the output frame is written. 635 * @addr: 32bit memory address aligned on 32byte boundary. 636 * Note: For SBL efficiency reasons the address should be on a 256-byte 637 * boundary. 638 */ 639static void resizer_set_outaddr(struct isp_res_device *res, u32 addr) 640{ 641 struct isp_device *isp = to_isp_device(res); 642 643 /* 644 * Set output address. This needs to be in its own function 645 * because it changes often. 646 */ 647 isp_reg_writel(isp, addr << ISPRSZ_SDR_OUTADD_ADDR_SHIFT, 648 OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTADD); 649} 650 651/* 652 * resizer_print_status - Prints the values of the resizer module registers. 653 */ 654#define RSZ_PRINT_REGISTER(isp, name)\ 655 dev_dbg(isp->dev, "###RSZ " #name "=0x%08x\n", \ 656 isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_##name)) 657 658static void resizer_print_status(struct isp_res_device *res) 659{ 660 struct isp_device *isp = to_isp_device(res); 661 662 dev_dbg(isp->dev, "-------------Resizer Register dump----------\n"); 663 664 RSZ_PRINT_REGISTER(isp, PCR); 665 RSZ_PRINT_REGISTER(isp, CNT); 666 RSZ_PRINT_REGISTER(isp, OUT_SIZE); 667 RSZ_PRINT_REGISTER(isp, IN_START); 668 RSZ_PRINT_REGISTER(isp, IN_SIZE); 669 RSZ_PRINT_REGISTER(isp, SDR_INADD); 670 RSZ_PRINT_REGISTER(isp, SDR_INOFF); 671 RSZ_PRINT_REGISTER(isp, SDR_OUTADD); 672 RSZ_PRINT_REGISTER(isp, SDR_OUTOFF); 673 RSZ_PRINT_REGISTER(isp, YENH); 674 675 dev_dbg(isp->dev, "--------------------------------------------\n"); 676} 677 678/* 679 * resizer_calc_ratios - Helper function for calculating resizer ratios 680 * @res: pointer to resizer private data structure 681 * @input: input frame size 682 * @output: output frame size 683 * @ratio : return calculated ratios 684 * return none 685 * 686 * The resizer uses a polyphase sample rate converter. The upsampling filter 687 * has a fixed number of phases that depend on the resizing ratio. As the ratio 688 * computation depends on the number of phases, we need to compute a first 689 * approximation and then refine it. 690 * 691 * The input/output/ratio relationship is given by the OMAP34xx TRM: 692 * 693 * - 8-phase, 4-tap mode (RSZ = 64 ~ 512) 694 * iw = (32 * sph + (ow - 1) * hrsz + 16) >> 8 + 7 695 * ih = (32 * spv + (oh - 1) * vrsz + 16) >> 8 + 4 696 * - 4-phase, 7-tap mode (RSZ = 513 ~ 1024) 697 * iw = (64 * sph + (ow - 1) * hrsz + 32) >> 8 + 7 698 * ih = (64 * spv + (oh - 1) * vrsz + 32) >> 8 + 7 699 * 700 * iw and ih are the input width and height after cropping. Those equations need 701 * to be satisfied exactly for the resizer to work correctly. 702 * 703 * The equations can't be easily reverted, as the >> 8 operation is not linear. 704 * In addition, not all input sizes can be achieved for a given output size. To 705 * get the highest input size lower than or equal to the requested input size, 706 * we need to compute the highest resizing ratio that satisfies the following 707 * inequality (taking the 4-tap mode width equation as an example) 708 * 709 * iw >= (32 * sph + (ow - 1) * hrsz + 16) >> 8 - 7 710 * 711 * (where iw is the requested input width) which can be rewritten as 712 * 713 * iw - 7 >= (32 * sph + (ow - 1) * hrsz + 16) >> 8 714 * (iw - 7) << 8 >= 32 * sph + (ow - 1) * hrsz + 16 - b 715 * ((iw - 7) << 8) + b >= 32 * sph + (ow - 1) * hrsz + 16 716 * 717 * where b is the value of the 8 least significant bits of the right hand side 718 * expression of the last inequality. The highest resizing ratio value will be 719 * achieved when b is equal to its maximum value of 255. That resizing ratio 720 * value will still satisfy the original inequality, as b will disappear when 721 * the expression will be shifted right by 8. 722 * 723 * The reverted equations thus become 724 * 725 * - 8-phase, 4-tap mode 726 * hrsz = ((iw - 7) * 256 + 255 - 16 - 32 * sph) / (ow - 1) 727 * vrsz = ((ih - 4) * 256 + 255 - 16 - 32 * spv) / (oh - 1) 728 * - 4-phase, 7-tap mode 729 * hrsz = ((iw - 7) * 256 + 255 - 32 - 64 * sph) / (ow - 1) 730 * vrsz = ((ih - 7) * 256 + 255 - 32 - 64 * spv) / (oh - 1) 731 * 732 * The ratios are integer values, and are rounded down to ensure that the 733 * cropped input size is not bigger than the uncropped input size. 734 * 735 * As the number of phases/taps, used to select the correct equations to compute 736 * the ratio, depends on the ratio, we start with the 4-tap mode equations to 737 * compute an approximation of the ratio, and switch to the 7-tap mode equations 738 * if the approximation is higher than the ratio threshold. 739 * 740 * As the 7-tap mode equations will return a ratio smaller than or equal to the 741 * 4-tap mode equations, the resulting ratio could become lower than or equal to 742 * the ratio threshold. This 'equations loop' isn't an issue as long as the 743 * correct equations are used to compute the final input size. Starting with the 744 * 4-tap mode equations ensure that, in case of values resulting in a 'ratio 745 * loop', the smallest of the ratio values will be used, never exceeding the 746 * requested input size. 747 * 748 * We first clamp the output size according to the hardware capability to avoid 749 * auto-cropping the input more than required to satisfy the TRM equations. The 750 * minimum output size is achieved with a scaling factor of 1024. It is thus 751 * computed using the 7-tap equations. 752 * 753 * min ow = ((iw - 7) * 256 - 32 - 64 * sph) / 1024 + 1 754 * min oh = ((ih - 7) * 256 - 32 - 64 * spv) / 1024 + 1 755 * 756 * Similarly, the maximum output size is achieved with a scaling factor of 64 757 * and computed using the 4-tap equations. 758 * 759 * max ow = ((iw - 7) * 256 + 255 - 16 - 32 * sph) / 64 + 1 760 * max oh = ((ih - 4) * 256 + 255 - 16 - 32 * spv) / 64 + 1 761 * 762 * The additional +255 term compensates for the round down operation performed 763 * by the TRM equations when shifting the value right by 8 bits. 764 * 765 * We then compute and clamp the ratios (x1/4 ~ x4). Clamping the output size to 766 * the maximum value guarantees that the ratio value will never be smaller than 767 * the minimum, but it could still slightly exceed the maximum. Clamping the 768 * ratio will thus result in a resizing factor slightly larger than the 769 * requested value. 770 * 771 * To accommodate that, and make sure the TRM equations are satisfied exactly, we 772 * compute the input crop rectangle as the last step. 773 * 774 * As if the situation wasn't complex enough, the maximum output width depends 775 * on the vertical resizing ratio. Fortunately, the output height doesn't 776 * depend on the horizontal resizing ratio. We can then start by computing the 777 * output height and the vertical ratio, and then move to computing the output 778 * width and the horizontal ratio. 779 */ 780static void resizer_calc_ratios(struct isp_res_device *res, 781 struct v4l2_rect *input, 782 struct v4l2_mbus_framefmt *output, 783 struct resizer_ratio *ratio) 784{ 785 struct isp_device *isp = to_isp_device(res); 786 const unsigned int spv = DEFAULT_PHASE; 787 const unsigned int sph = DEFAULT_PHASE; 788 unsigned int upscaled_width; 789 unsigned int upscaled_height; 790 unsigned int min_width; 791 unsigned int min_height; 792 unsigned int max_width; 793 unsigned int max_height; 794 unsigned int width_alignment; 795 unsigned int width; 796 unsigned int height; 797 798 /* 799 * Clamp the output height based on the hardware capabilities and 800 * compute the vertical resizing ratio. 801 */ 802 min_height = ((input->height - 7) * 256 - 32 - 64 * spv) / 1024 + 1; 803 min_height = max_t(unsigned int, min_height, MIN_OUT_HEIGHT); 804 max_height = ((input->height - 4) * 256 + 255 - 16 - 32 * spv) / 64 + 1; 805 max_height = min_t(unsigned int, max_height, MAX_OUT_HEIGHT); 806 output->height = clamp(output->height, min_height, max_height); 807 808 ratio->vert = ((input->height - 4) * 256 + 255 - 16 - 32 * spv) 809 / (output->height - 1); 810 if (ratio->vert > MID_RESIZE_VALUE) 811 ratio->vert = ((input->height - 7) * 256 + 255 - 32 - 64 * spv) 812 / (output->height - 1); 813 ratio->vert = clamp_t(unsigned int, ratio->vert, 814 MIN_RESIZE_VALUE, MAX_RESIZE_VALUE); 815 816 if (ratio->vert <= MID_RESIZE_VALUE) { 817 upscaled_height = (output->height - 1) * ratio->vert 818 + 32 * spv + 16; 819 height = (upscaled_height >> 8) + 4; 820 } else { 821 upscaled_height = (output->height - 1) * ratio->vert 822 + 64 * spv + 32; 823 height = (upscaled_height >> 8) + 7; 824 } 825 826 /* 827 * Compute the minimum and maximum output widths based on the hardware 828 * capabilities. The maximum depends on the vertical resizing ratio. 829 */ 830 min_width = ((input->width - 7) * 256 - 32 - 64 * sph) / 1024 + 1; 831 min_width = max_t(unsigned int, min_width, MIN_OUT_WIDTH); 832 833 if (ratio->vert <= MID_RESIZE_VALUE) { 834 switch (isp->revision) { 835 case ISP_REVISION_1_0: 836 max_width = MAX_4TAP_OUT_WIDTH_ES1; 837 break; 838 839 case ISP_REVISION_2_0: 840 default: 841 max_width = MAX_4TAP_OUT_WIDTH_ES2; 842 break; 843 844 case ISP_REVISION_15_0: 845 max_width = MAX_4TAP_OUT_WIDTH_3630; 846 break; 847 } 848 } else { 849 switch (isp->revision) { 850 case ISP_REVISION_1_0: 851 max_width = MAX_7TAP_OUT_WIDTH_ES1; 852 break; 853 854 case ISP_REVISION_2_0: 855 default: 856 max_width = MAX_7TAP_OUT_WIDTH_ES2; 857 break; 858 859 case ISP_REVISION_15_0: 860 max_width = MAX_7TAP_OUT_WIDTH_3630; 861 break; 862 } 863 } 864 max_width = min(((input->width - 7) * 256 + 255 - 16 - 32 * sph) / 64 865 + 1, max_width); 866 867 /* 868 * The output width must be even, and must be a multiple of 16 bytes 869 * when upscaling vertically. Clamp the output width to the valid range. 870 * Take the alignment into account (the maximum width in 7-tap mode on 871 * ES2 isn't a multiple of 8) and align the result up to make sure it 872 * won't be smaller than the minimum. 873 */ 874 width_alignment = ratio->vert < 256 ? 8 : 2; 875 output->width = clamp(output->width, min_width, 876 max_width & ~(width_alignment - 1)); 877 output->width = ALIGN(output->width, width_alignment); 878 879 ratio->horz = ((input->width - 7) * 256 + 255 - 16 - 32 * sph) 880 / (output->width - 1); 881 if (ratio->horz > MID_RESIZE_VALUE) 882 ratio->horz = ((input->width - 7) * 256 + 255 - 32 - 64 * sph) 883 / (output->width - 1); 884 ratio->horz = clamp_t(unsigned int, ratio->horz, 885 MIN_RESIZE_VALUE, MAX_RESIZE_VALUE); 886 887 if (ratio->horz <= MID_RESIZE_VALUE) { 888 upscaled_width = (output->width - 1) * ratio->horz 889 + 32 * sph + 16; 890 width = (upscaled_width >> 8) + 7; 891 } else { 892 upscaled_width = (output->width - 1) * ratio->horz 893 + 64 * sph + 32; 894 width = (upscaled_width >> 8) + 7; 895 } 896 897 /* Center the new crop rectangle. */ 898 input->left += (input->width - width) / 2; 899 input->top += (input->height - height) / 2; 900 input->width = width; 901 input->height = height; 902} 903 904/* 905 * resizer_set_crop_params - Setup hardware with cropping parameters 906 * @res : resizer private structure 907 * @input : format on sink pad 908 * @output : format on source pad 909 * return none 910 */ 911static void resizer_set_crop_params(struct isp_res_device *res, 912 const struct v4l2_mbus_framefmt *input, 913 const struct v4l2_mbus_framefmt *output) 914{ 915 resizer_set_ratio(res, &res->ratio); 916 917 /* Set chrominance horizontal algorithm */ 918 if (res->ratio.horz >= RESIZE_DIVISOR) 919 resizer_set_bilinear(res, RSZ_THE_SAME); 920 else 921 resizer_set_bilinear(res, RSZ_BILINEAR); 922 923 resizer_adjust_bandwidth(res); 924 925 if (res->input == RESIZER_INPUT_MEMORY) { 926 /* Calculate additional offset for crop */ 927 res->crop_offset = (res->crop.active.top * input->width + 928 res->crop.active.left) * 2; 929 /* 930 * Write lowest 4 bits of horizontal pixel offset (in pixels), 931 * vertical start must be 0. 932 */ 933 resizer_set_start(res, (res->crop_offset / 2) & 0xf, 0); 934 935 /* 936 * Set start (read) address for cropping, in bytes. 937 * Lowest 5 bits must be zero. 938 */ 939 __resizer_set_inaddr(res, 940 res->addr_base + (res->crop_offset & ~0x1f)); 941 } else { 942 /* 943 * Set vertical start line and horizontal starting pixel. 944 * If the input is from CCDC/PREV, horizontal start field is 945 * in bytes (twice number of pixels). 946 */ 947 resizer_set_start(res, res->crop.active.left * 2, 948 res->crop.active.top); 949 /* Input address and offset must be 0 for preview/ccdc input */ 950 __resizer_set_inaddr(res, 0); 951 resizer_set_input_offset(res, 0); 952 } 953 954 /* Set the input size */ 955 resizer_set_input_size(res, res->crop.active.width, 956 res->crop.active.height); 957} 958 959static void resizer_configure(struct isp_res_device *res) 960{ 961 struct v4l2_mbus_framefmt *informat, *outformat; 962 struct resizer_luma_yenh luma = {0, 0, 0, 0}; 963 964 resizer_set_source(res, res->input); 965 966 informat = &res->formats[RESZ_PAD_SINK]; 967 outformat = &res->formats[RESZ_PAD_SOURCE]; 968 969 /* RESZ_PAD_SINK */ 970 if (res->input == RESIZER_INPUT_VP) 971 resizer_set_input_offset(res, 0); 972 else 973 resizer_set_input_offset(res, ALIGN(informat->width, 0x10) * 2); 974 975 /* YUV422 interleaved, default phase, no luma enhancement */ 976 resizer_set_intype(res, RSZ_YUV422); 977 resizer_set_ycpos(res, informat->code); 978 resizer_set_phase(res, DEFAULT_PHASE, DEFAULT_PHASE); 979 resizer_set_luma(res, &luma); 980 981 /* RESZ_PAD_SOURCE */ 982 resizer_set_output_offset(res, ALIGN(outformat->width * 2, 32)); 983 resizer_set_output_size(res, outformat->width, outformat->height); 984 985 resizer_set_crop_params(res, informat, outformat); 986} 987 988/* ----------------------------------------------------------------------------- 989 * Interrupt handling 990 */ 991 992static void resizer_enable_oneshot(struct isp_res_device *res) 993{ 994 struct isp_device *isp = to_isp_device(res); 995 996 isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR, 997 ISPRSZ_PCR_ENABLE | ISPRSZ_PCR_ONESHOT); 998} 999 1000void omap3isp_resizer_isr_frame_sync(struct isp_res_device *res) 1001{ 1002 /* 1003 * If ISP_VIDEO_DMAQUEUE_QUEUED is set, DMA queue had an underrun 1004 * condition, the module was paused and now we have a buffer queued 1005 * on the output again. Restart the pipeline if running in continuous 1006 * mode. 1007 */ 1008 if (res->state == ISP_PIPELINE_STREAM_CONTINUOUS && 1009 res->video_out.dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) { 1010 resizer_enable_oneshot(res); 1011 isp_video_dmaqueue_flags_clr(&res->video_out); 1012 } 1013} 1014 1015static void resizer_isr_buffer(struct isp_res_device *res) 1016{ 1017 struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity); 1018 struct isp_buffer *buffer; 1019 int restart = 0; 1020 1021 if (res->state == ISP_PIPELINE_STREAM_STOPPED) 1022 return; 1023 1024 /* Complete the output buffer and, if reading from memory, the input 1025 * buffer. 1026 */ 1027 buffer = omap3isp_video_buffer_next(&res->video_out); 1028 if (buffer != NULL) { 1029 resizer_set_outaddr(res, buffer->dma); 1030 restart = 1; 1031 } 1032 1033 pipe->state |= ISP_PIPELINE_IDLE_OUTPUT; 1034 1035 if (res->input == RESIZER_INPUT_MEMORY) { 1036 buffer = omap3isp_video_buffer_next(&res->video_in); 1037 if (buffer != NULL) 1038 resizer_set_inaddr(res, buffer->dma); 1039 pipe->state |= ISP_PIPELINE_IDLE_INPUT; 1040 } 1041 1042 if (res->state == ISP_PIPELINE_STREAM_SINGLESHOT) { 1043 if (isp_pipeline_ready(pipe)) 1044 omap3isp_pipeline_set_stream(pipe, 1045 ISP_PIPELINE_STREAM_SINGLESHOT); 1046 } else { 1047 /* If an underrun occurs, the video queue operation handler will 1048 * restart the resizer. Otherwise restart it immediately. 1049 */ 1050 if (restart) 1051 resizer_enable_oneshot(res); 1052 } 1053} 1054 1055/* 1056 * omap3isp_resizer_isr - ISP resizer interrupt handler 1057 * 1058 * Manage the resizer video buffers and configure shadowed and busy-locked 1059 * registers. 1060 */ 1061void omap3isp_resizer_isr(struct isp_res_device *res) 1062{ 1063 struct v4l2_mbus_framefmt *informat, *outformat; 1064 unsigned long flags; 1065 1066 if (omap3isp_module_sync_is_stopping(&res->wait, &res->stopping)) 1067 return; 1068 1069 spin_lock_irqsave(&res->lock, flags); 1070 1071 if (res->applycrop) { 1072 outformat = __resizer_get_format(res, NULL, RESZ_PAD_SOURCE, 1073 V4L2_SUBDEV_FORMAT_ACTIVE); 1074 informat = __resizer_get_format(res, NULL, RESZ_PAD_SINK, 1075 V4L2_SUBDEV_FORMAT_ACTIVE); 1076 resizer_set_crop_params(res, informat, outformat); 1077 res->applycrop = 0; 1078 } 1079 1080 spin_unlock_irqrestore(&res->lock, flags); 1081 1082 resizer_isr_buffer(res); 1083} 1084 1085/* ----------------------------------------------------------------------------- 1086 * ISP video operations 1087 */ 1088 1089static int resizer_video_queue(struct isp_video *video, 1090 struct isp_buffer *buffer) 1091{ 1092 struct isp_res_device *res = &video->isp->isp_res; 1093 1094 if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 1095 resizer_set_inaddr(res, buffer->dma); 1096 1097 /* 1098 * We now have a buffer queued on the output. Despite what the 1099 * TRM says, the resizer can't be restarted immediately. 1100 * Enabling it in one shot mode in the middle of a frame (or at 1101 * least asynchronously to the frame) results in the output 1102 * being shifted randomly left/right and up/down, as if the 1103 * hardware didn't synchronize itself to the beginning of the 1104 * frame correctly. 1105 * 1106 * Restart the resizer on the next sync interrupt if running in 1107 * continuous mode or when starting the stream. 1108 */ 1109 if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) 1110 resizer_set_outaddr(res, buffer->dma); 1111 1112 return 0; 1113} 1114 1115static const struct isp_video_operations resizer_video_ops = { 1116 .queue = resizer_video_queue, 1117}; 1118 1119/* ----------------------------------------------------------------------------- 1120 * V4L2 subdev operations 1121 */ 1122 1123/* 1124 * resizer_set_stream - Enable/Disable streaming on resizer subdev 1125 * @sd: ISP resizer V4L2 subdev 1126 * @enable: 1 == Enable, 0 == Disable 1127 * 1128 * The resizer hardware can't be enabled without a memory buffer to write to. 1129 * As the s_stream operation is called in response to a STREAMON call without 1130 * any buffer queued yet, just update the state field and return immediately. 1131 * The resizer will be enabled in resizer_video_queue(). 1132 */ 1133static int resizer_set_stream(struct v4l2_subdev *sd, int enable) 1134{ 1135 struct isp_res_device *res = v4l2_get_subdevdata(sd); 1136 struct isp_video *video_out = &res->video_out; 1137 struct isp_device *isp = to_isp_device(res); 1138 struct device *dev = to_device(res); 1139 1140 if (res->state == ISP_PIPELINE_STREAM_STOPPED) { 1141 if (enable == ISP_PIPELINE_STREAM_STOPPED) 1142 return 0; 1143 1144 omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_RESIZER); 1145 resizer_configure(res); 1146 resizer_print_status(res); 1147 } 1148 1149 switch (enable) { 1150 case ISP_PIPELINE_STREAM_CONTINUOUS: 1151 omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_WRITE); 1152 if (video_out->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) { 1153 resizer_enable_oneshot(res); 1154 isp_video_dmaqueue_flags_clr(video_out); 1155 } 1156 break; 1157 1158 case ISP_PIPELINE_STREAM_SINGLESHOT: 1159 if (res->input == RESIZER_INPUT_MEMORY) 1160 omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_READ); 1161 omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_WRITE); 1162 1163 resizer_enable_oneshot(res); 1164 break; 1165 1166 case ISP_PIPELINE_STREAM_STOPPED: 1167 if (omap3isp_module_sync_idle(&sd->entity, &res->wait, 1168 &res->stopping)) 1169 dev_dbg(dev, "%s: module stop timeout.\n", sd->name); 1170 omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_RESIZER_READ | 1171 OMAP3_ISP_SBL_RESIZER_WRITE); 1172 omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_RESIZER); 1173 isp_video_dmaqueue_flags_clr(video_out); 1174 break; 1175 } 1176 1177 res->state = enable; 1178 return 0; 1179} 1180 1181/* 1182 * resizer_try_crop - mangles crop parameters. 1183 */ 1184static void resizer_try_crop(const struct v4l2_mbus_framefmt *sink, 1185 const struct v4l2_mbus_framefmt *source, 1186 struct v4l2_rect *crop) 1187{ 1188 const unsigned int spv = DEFAULT_PHASE; 1189 const unsigned int sph = DEFAULT_PHASE; 1190 1191 /* Crop rectangle is constrained by the output size so that zoom ratio 1192 * cannot exceed +/-4.0. 1193 */ 1194 unsigned int min_width = 1195 ((32 * sph + (source->width - 1) * 64 + 16) >> 8) + 7; 1196 unsigned int min_height = 1197 ((32 * spv + (source->height - 1) * 64 + 16) >> 8) + 4; 1198 unsigned int max_width = 1199 ((64 * sph + (source->width - 1) * 1024 + 32) >> 8) + 7; 1200 unsigned int max_height = 1201 ((64 * spv + (source->height - 1) * 1024 + 32) >> 8) + 7; 1202 1203 crop->width = clamp_t(u32, crop->width, min_width, max_width); 1204 crop->height = clamp_t(u32, crop->height, min_height, max_height); 1205 1206 /* Crop can not go beyond of the input rectangle */ 1207 crop->left = clamp_t(u32, crop->left, 0, sink->width - MIN_IN_WIDTH); 1208 crop->width = clamp_t(u32, crop->width, MIN_IN_WIDTH, 1209 sink->width - crop->left); 1210 crop->top = clamp_t(u32, crop->top, 0, sink->height - MIN_IN_HEIGHT); 1211 crop->height = clamp_t(u32, crop->height, MIN_IN_HEIGHT, 1212 sink->height - crop->top); 1213} 1214 1215/* 1216 * resizer_get_selection - Retrieve a selection rectangle on a pad 1217 * @sd: ISP resizer V4L2 subdevice 1218 * @cfg: V4L2 subdev pad configuration 1219 * @sel: Selection rectangle 1220 * 1221 * The only supported rectangles are the crop rectangles on the sink pad. 1222 * 1223 * Return 0 on success or a negative error code otherwise. 1224 */ 1225static int resizer_get_selection(struct v4l2_subdev *sd, 1226 struct v4l2_subdev_pad_config *cfg, 1227 struct v4l2_subdev_selection *sel) 1228{ 1229 struct isp_res_device *res = v4l2_get_subdevdata(sd); 1230 struct v4l2_mbus_framefmt *format_source; 1231 struct v4l2_mbus_framefmt *format_sink; 1232 struct resizer_ratio ratio; 1233 1234 if (sel->pad != RESZ_PAD_SINK) 1235 return -EINVAL; 1236 1237 format_sink = __resizer_get_format(res, cfg, RESZ_PAD_SINK, 1238 sel->which); 1239 format_source = __resizer_get_format(res, cfg, RESZ_PAD_SOURCE, 1240 sel->which); 1241 1242 switch (sel->target) { 1243 case V4L2_SEL_TGT_CROP_BOUNDS: 1244 sel->r.left = 0; 1245 sel->r.top = 0; 1246 sel->r.width = INT_MAX; 1247 sel->r.height = INT_MAX; 1248 1249 resizer_try_crop(format_sink, format_source, &sel->r); 1250 resizer_calc_ratios(res, &sel->r, format_source, &ratio); 1251 break; 1252 1253 case V4L2_SEL_TGT_CROP: 1254 sel->r = *__resizer_get_crop(res, cfg, sel->which); 1255 resizer_calc_ratios(res, &sel->r, format_source, &ratio); 1256 break; 1257 1258 default: 1259 return -EINVAL; 1260 } 1261 1262 return 0; 1263} 1264 1265/* 1266 * resizer_set_selection - Set a selection rectangle on a pad 1267 * @sd: ISP resizer V4L2 subdevice 1268 * @cfg: V4L2 subdev pad configuration 1269 * @sel: Selection rectangle 1270 * 1271 * The only supported rectangle is the actual crop rectangle on the sink pad. 1272 * 1273 * FIXME: This function currently behaves as if the KEEP_CONFIG selection flag 1274 * was always set. 1275 * 1276 * Return 0 on success or a negative error code otherwise. 1277 */ 1278static int resizer_set_selection(struct v4l2_subdev *sd, 1279 struct v4l2_subdev_pad_config *cfg, 1280 struct v4l2_subdev_selection *sel) 1281{ 1282 struct isp_res_device *res = v4l2_get_subdevdata(sd); 1283 struct isp_device *isp = to_isp_device(res); 1284 const struct v4l2_mbus_framefmt *format_sink; 1285 struct v4l2_mbus_framefmt format_source; 1286 struct resizer_ratio ratio; 1287 unsigned long flags; 1288 1289 if (sel->target != V4L2_SEL_TGT_CROP || 1290 sel->pad != RESZ_PAD_SINK) 1291 return -EINVAL; 1292 1293 format_sink = __resizer_get_format(res, cfg, RESZ_PAD_SINK, 1294 sel->which); 1295 format_source = *__resizer_get_format(res, cfg, RESZ_PAD_SOURCE, 1296 sel->which); 1297 1298 dev_dbg(isp->dev, "%s(%s): req %ux%u -> (%d,%d)/%ux%u -> %ux%u\n", 1299 __func__, sel->which == V4L2_SUBDEV_FORMAT_TRY ? "try" : "act", 1300 format_sink->width, format_sink->height, 1301 sel->r.left, sel->r.top, sel->r.width, sel->r.height, 1302 format_source.width, format_source.height); 1303 1304 /* Clamp the crop rectangle to the bounds, and then mangle it further to 1305 * fulfill the TRM equations. Store the clamped but otherwise unmangled 1306 * rectangle to avoid cropping the input multiple times: when an 1307 * application sets the output format, the current crop rectangle is 1308 * mangled during crop rectangle computation, which would lead to a new, 1309 * smaller input crop rectangle every time the output size is set if we 1310 * stored the mangled rectangle. 1311 */ 1312 resizer_try_crop(format_sink, &format_source, &sel->r); 1313 *__resizer_get_crop(res, cfg, sel->which) = sel->r; 1314 resizer_calc_ratios(res, &sel->r, &format_source, &ratio); 1315 1316 dev_dbg(isp->dev, "%s(%s): got %ux%u -> (%d,%d)/%ux%u -> %ux%u\n", 1317 __func__, sel->which == V4L2_SUBDEV_FORMAT_TRY ? "try" : "act", 1318 format_sink->width, format_sink->height, 1319 sel->r.left, sel->r.top, sel->r.width, sel->r.height, 1320 format_source.width, format_source.height); 1321 1322 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { 1323 *__resizer_get_format(res, cfg, RESZ_PAD_SOURCE, sel->which) = 1324 format_source; 1325 return 0; 1326 } 1327 1328 /* Update the source format, resizing ratios and crop rectangle. If 1329 * streaming is on the IRQ handler will reprogram the resizer after the 1330 * current frame. We thus we need to protect against race conditions. 1331 */ 1332 spin_lock_irqsave(&res->lock, flags); 1333 1334 *__resizer_get_format(res, cfg, RESZ_PAD_SOURCE, sel->which) = 1335 format_source; 1336 1337 res->ratio = ratio; 1338 res->crop.active = sel->r; 1339 1340 if (res->state != ISP_PIPELINE_STREAM_STOPPED) 1341 res->applycrop = 1; 1342 1343 spin_unlock_irqrestore(&res->lock, flags); 1344 1345 return 0; 1346} 1347 1348/* resizer pixel formats */ 1349static const unsigned int resizer_formats[] = { 1350 MEDIA_BUS_FMT_UYVY8_1X16, 1351 MEDIA_BUS_FMT_YUYV8_1X16, 1352}; 1353 1354static unsigned int resizer_max_in_width(struct isp_res_device *res) 1355{ 1356 struct isp_device *isp = to_isp_device(res); 1357 1358 if (res->input == RESIZER_INPUT_MEMORY) { 1359 return MAX_IN_WIDTH_MEMORY_MODE; 1360 } else { 1361 if (isp->revision == ISP_REVISION_1_0) 1362 return MAX_IN_WIDTH_ONTHEFLY_MODE_ES1; 1363 else 1364 return MAX_IN_WIDTH_ONTHEFLY_MODE_ES2; 1365 } 1366} 1367 1368/* 1369 * resizer_try_format - Handle try format by pad subdev method 1370 * @res : ISP resizer device 1371 * @cfg: V4L2 subdev pad configuration 1372 * @pad : pad num 1373 * @fmt : pointer to v4l2 format structure 1374 * @which : wanted subdev format 1375 */ 1376static void resizer_try_format(struct isp_res_device *res, 1377 struct v4l2_subdev_pad_config *cfg, unsigned int pad, 1378 struct v4l2_mbus_framefmt *fmt, 1379 enum v4l2_subdev_format_whence which) 1380{ 1381 struct v4l2_mbus_framefmt *format; 1382 struct resizer_ratio ratio; 1383 struct v4l2_rect crop; 1384 1385 switch (pad) { 1386 case RESZ_PAD_SINK: 1387 if (fmt->code != MEDIA_BUS_FMT_YUYV8_1X16 && 1388 fmt->code != MEDIA_BUS_FMT_UYVY8_1X16) 1389 fmt->code = MEDIA_BUS_FMT_YUYV8_1X16; 1390 1391 fmt->width = clamp_t(u32, fmt->width, MIN_IN_WIDTH, 1392 resizer_max_in_width(res)); 1393 fmt->height = clamp_t(u32, fmt->height, MIN_IN_HEIGHT, 1394 MAX_IN_HEIGHT); 1395 break; 1396 1397 case RESZ_PAD_SOURCE: 1398 format = __resizer_get_format(res, cfg, RESZ_PAD_SINK, which); 1399 fmt->code = format->code; 1400 1401 crop = *__resizer_get_crop(res, cfg, which); 1402 resizer_calc_ratios(res, &crop, fmt, &ratio); 1403 break; 1404 } 1405 1406 fmt->colorspace = V4L2_COLORSPACE_JPEG; 1407 fmt->field = V4L2_FIELD_NONE; 1408} 1409 1410/* 1411 * resizer_enum_mbus_code - Handle pixel format enumeration 1412 * @sd : pointer to v4l2 subdev structure 1413 * @cfg: V4L2 subdev pad configuration 1414 * @code : pointer to v4l2_subdev_mbus_code_enum structure 1415 * return -EINVAL or zero on success 1416 */ 1417static int resizer_enum_mbus_code(struct v4l2_subdev *sd, 1418 struct v4l2_subdev_pad_config *cfg, 1419 struct v4l2_subdev_mbus_code_enum *code) 1420{ 1421 struct isp_res_device *res = v4l2_get_subdevdata(sd); 1422 struct v4l2_mbus_framefmt *format; 1423 1424 if (code->pad == RESZ_PAD_SINK) { 1425 if (code->index >= ARRAY_SIZE(resizer_formats)) 1426 return -EINVAL; 1427 1428 code->code = resizer_formats[code->index]; 1429 } else { 1430 if (code->index != 0) 1431 return -EINVAL; 1432 1433 format = __resizer_get_format(res, cfg, RESZ_PAD_SINK, 1434 code->which); 1435 code->code = format->code; 1436 } 1437 1438 return 0; 1439} 1440 1441static int resizer_enum_frame_size(struct v4l2_subdev *sd, 1442 struct v4l2_subdev_pad_config *cfg, 1443 struct v4l2_subdev_frame_size_enum *fse) 1444{ 1445 struct isp_res_device *res = v4l2_get_subdevdata(sd); 1446 struct v4l2_mbus_framefmt format; 1447 1448 if (fse->index != 0) 1449 return -EINVAL; 1450 1451 format.code = fse->code; 1452 format.width = 1; 1453 format.height = 1; 1454 resizer_try_format(res, cfg, fse->pad, &format, fse->which); 1455 fse->min_width = format.width; 1456 fse->min_height = format.height; 1457 1458 if (format.code != fse->code) 1459 return -EINVAL; 1460 1461 format.code = fse->code; 1462 format.width = -1; 1463 format.height = -1; 1464 resizer_try_format(res, cfg, fse->pad, &format, fse->which); 1465 fse->max_width = format.width; 1466 fse->max_height = format.height; 1467 1468 return 0; 1469} 1470 1471/* 1472 * resizer_get_format - Handle get format by pads subdev method 1473 * @sd : pointer to v4l2 subdev structure 1474 * @cfg: V4L2 subdev pad configuration 1475 * @fmt : pointer to v4l2 subdev format structure 1476 * return -EINVAL or zero on success 1477 */ 1478static int resizer_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, 1479 struct v4l2_subdev_format *fmt) 1480{ 1481 struct isp_res_device *res = v4l2_get_subdevdata(sd); 1482 struct v4l2_mbus_framefmt *format; 1483 1484 format = __resizer_get_format(res, cfg, fmt->pad, fmt->which); 1485 if (format == NULL) 1486 return -EINVAL; 1487 1488 fmt->format = *format; 1489 return 0; 1490} 1491 1492/* 1493 * resizer_set_format - Handle set format by pads subdev method 1494 * @sd : pointer to v4l2 subdev structure 1495 * @cfg: V4L2 subdev pad configuration 1496 * @fmt : pointer to v4l2 subdev format structure 1497 * return -EINVAL or zero on success 1498 */ 1499static int resizer_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, 1500 struct v4l2_subdev_format *fmt) 1501{ 1502 struct isp_res_device *res = v4l2_get_subdevdata(sd); 1503 struct v4l2_mbus_framefmt *format; 1504 struct v4l2_rect *crop; 1505 1506 format = __resizer_get_format(res, cfg, fmt->pad, fmt->which); 1507 if (format == NULL) 1508 return -EINVAL; 1509 1510 resizer_try_format(res, cfg, fmt->pad, &fmt->format, fmt->which); 1511 *format = fmt->format; 1512 1513 if (fmt->pad == RESZ_PAD_SINK) { 1514 /* reset crop rectangle */ 1515 crop = __resizer_get_crop(res, cfg, fmt->which); 1516 crop->left = 0; 1517 crop->top = 0; 1518 crop->width = fmt->format.width; 1519 crop->height = fmt->format.height; 1520 1521 /* Propagate the format from sink to source */ 1522 format = __resizer_get_format(res, cfg, RESZ_PAD_SOURCE, 1523 fmt->which); 1524 *format = fmt->format; 1525 resizer_try_format(res, cfg, RESZ_PAD_SOURCE, format, 1526 fmt->which); 1527 } 1528 1529 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { 1530 /* Compute and store the active crop rectangle and resizer 1531 * ratios. format already points to the source pad active 1532 * format. 1533 */ 1534 res->crop.active = res->crop.request; 1535 resizer_calc_ratios(res, &res->crop.active, format, 1536 &res->ratio); 1537 } 1538 1539 return 0; 1540} 1541 1542static int resizer_link_validate(struct v4l2_subdev *sd, 1543 struct media_link *link, 1544 struct v4l2_subdev_format *source_fmt, 1545 struct v4l2_subdev_format *sink_fmt) 1546{ 1547 struct isp_res_device *res = v4l2_get_subdevdata(sd); 1548 struct isp_pipeline *pipe = to_isp_pipeline(&sd->entity); 1549 1550 omap3isp_resizer_max_rate(res, &pipe->max_rate); 1551 1552 return v4l2_subdev_link_validate_default(sd, link, 1553 source_fmt, sink_fmt); 1554} 1555 1556/* 1557 * resizer_init_formats - Initialize formats on all pads 1558 * @sd: ISP resizer V4L2 subdevice 1559 * @fh: V4L2 subdev file handle 1560 * 1561 * Initialize all pad formats with default values. If fh is not NULL, try 1562 * formats are initialized on the file handle. Otherwise active formats are 1563 * initialized on the device. 1564 */ 1565static int resizer_init_formats(struct v4l2_subdev *sd, 1566 struct v4l2_subdev_fh *fh) 1567{ 1568 struct v4l2_subdev_format format; 1569 1570 memset(&format, 0, sizeof(format)); 1571 format.pad = RESZ_PAD_SINK; 1572 format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; 1573 format.format.code = MEDIA_BUS_FMT_YUYV8_1X16; 1574 format.format.width = 4096; 1575 format.format.height = 4096; 1576 resizer_set_format(sd, fh ? fh->pad : NULL, &format); 1577 1578 return 0; 1579} 1580 1581/* subdev video operations */ 1582static const struct v4l2_subdev_video_ops resizer_v4l2_video_ops = { 1583 .s_stream = resizer_set_stream, 1584}; 1585 1586/* subdev pad operations */ 1587static const struct v4l2_subdev_pad_ops resizer_v4l2_pad_ops = { 1588 .enum_mbus_code = resizer_enum_mbus_code, 1589 .enum_frame_size = resizer_enum_frame_size, 1590 .get_fmt = resizer_get_format, 1591 .set_fmt = resizer_set_format, 1592 .get_selection = resizer_get_selection, 1593 .set_selection = resizer_set_selection, 1594 .link_validate = resizer_link_validate, 1595}; 1596 1597/* subdev operations */ 1598static const struct v4l2_subdev_ops resizer_v4l2_ops = { 1599 .video = &resizer_v4l2_video_ops, 1600 .pad = &resizer_v4l2_pad_ops, 1601}; 1602 1603/* subdev internal operations */ 1604static const struct v4l2_subdev_internal_ops resizer_v4l2_internal_ops = { 1605 .open = resizer_init_formats, 1606}; 1607 1608/* ----------------------------------------------------------------------------- 1609 * Media entity operations 1610 */ 1611 1612/* 1613 * resizer_link_setup - Setup resizer connections. 1614 * @entity : Pointer to media entity structure 1615 * @local : Pointer to local pad array 1616 * @remote : Pointer to remote pad array 1617 * @flags : Link flags 1618 * return -EINVAL or zero on success 1619 */ 1620static int resizer_link_setup(struct media_entity *entity, 1621 const struct media_pad *local, 1622 const struct media_pad *remote, u32 flags) 1623{ 1624 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); 1625 struct isp_res_device *res = v4l2_get_subdevdata(sd); 1626 1627 switch (local->index | media_entity_type(remote->entity)) { 1628 case RESZ_PAD_SINK | MEDIA_ENT_T_DEVNODE: 1629 /* read from memory */ 1630 if (flags & MEDIA_LNK_FL_ENABLED) { 1631 if (res->input == RESIZER_INPUT_VP) 1632 return -EBUSY; 1633 res->input = RESIZER_INPUT_MEMORY; 1634 } else { 1635 if (res->input == RESIZER_INPUT_MEMORY) 1636 res->input = RESIZER_INPUT_NONE; 1637 } 1638 break; 1639 1640 case RESZ_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: 1641 /* read from ccdc or previewer */ 1642 if (flags & MEDIA_LNK_FL_ENABLED) { 1643 if (res->input == RESIZER_INPUT_MEMORY) 1644 return -EBUSY; 1645 res->input = RESIZER_INPUT_VP; 1646 } else { 1647 if (res->input == RESIZER_INPUT_VP) 1648 res->input = RESIZER_INPUT_NONE; 1649 } 1650 break; 1651 1652 case RESZ_PAD_SOURCE | MEDIA_ENT_T_DEVNODE: 1653 /* resizer always write to memory */ 1654 break; 1655 1656 default: 1657 return -EINVAL; 1658 } 1659 1660 return 0; 1661} 1662 1663/* media operations */ 1664static const struct media_entity_operations resizer_media_ops = { 1665 .link_setup = resizer_link_setup, 1666 .link_validate = v4l2_subdev_link_validate, 1667}; 1668 1669void omap3isp_resizer_unregister_entities(struct isp_res_device *res) 1670{ 1671 v4l2_device_unregister_subdev(&res->subdev); 1672 omap3isp_video_unregister(&res->video_in); 1673 omap3isp_video_unregister(&res->video_out); 1674} 1675 1676int omap3isp_resizer_register_entities(struct isp_res_device *res, 1677 struct v4l2_device *vdev) 1678{ 1679 int ret; 1680 1681 /* Register the subdev and video nodes. */ 1682 ret = v4l2_device_register_subdev(vdev, &res->subdev); 1683 if (ret < 0) 1684 goto error; 1685 1686 ret = omap3isp_video_register(&res->video_in, vdev); 1687 if (ret < 0) 1688 goto error; 1689 1690 ret = omap3isp_video_register(&res->video_out, vdev); 1691 if (ret < 0) 1692 goto error; 1693 1694 return 0; 1695 1696error: 1697 omap3isp_resizer_unregister_entities(res); 1698 return ret; 1699} 1700 1701/* ----------------------------------------------------------------------------- 1702 * ISP resizer initialization and cleanup 1703 */ 1704 1705/* 1706 * resizer_init_entities - Initialize resizer subdev and media entity. 1707 * @res : Pointer to resizer device structure 1708 * return -ENOMEM or zero on success 1709 */ 1710static int resizer_init_entities(struct isp_res_device *res) 1711{ 1712 struct v4l2_subdev *sd = &res->subdev; 1713 struct media_pad *pads = res->pads; 1714 struct media_entity *me = &sd->entity; 1715 int ret; 1716 1717 res->input = RESIZER_INPUT_NONE; 1718 1719 v4l2_subdev_init(sd, &resizer_v4l2_ops); 1720 sd->internal_ops = &resizer_v4l2_internal_ops; 1721 strlcpy(sd->name, "OMAP3 ISP resizer", sizeof(sd->name)); 1722 sd->grp_id = 1 << 16; /* group ID for isp subdevs */ 1723 v4l2_set_subdevdata(sd, res); 1724 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1725 1726 pads[RESZ_PAD_SINK].flags = MEDIA_PAD_FL_SINK 1727 | MEDIA_PAD_FL_MUST_CONNECT; 1728 pads[RESZ_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; 1729 1730 me->ops = &resizer_media_ops; 1731 ret = media_entity_init(me, RESZ_PADS_NUM, pads, 0); 1732 if (ret < 0) 1733 return ret; 1734 1735 resizer_init_formats(sd, NULL); 1736 1737 res->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; 1738 res->video_in.ops = &resizer_video_ops; 1739 res->video_in.isp = to_isp_device(res); 1740 res->video_in.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3; 1741 res->video_in.bpl_alignment = 32; 1742 res->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 1743 res->video_out.ops = &resizer_video_ops; 1744 res->video_out.isp = to_isp_device(res); 1745 res->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3; 1746 res->video_out.bpl_alignment = 32; 1747 1748 ret = omap3isp_video_init(&res->video_in, "resizer"); 1749 if (ret < 0) 1750 goto error_video_in; 1751 1752 ret = omap3isp_video_init(&res->video_out, "resizer"); 1753 if (ret < 0) 1754 goto error_video_out; 1755 1756 res->video_out.video.entity.flags |= MEDIA_ENT_FL_DEFAULT; 1757 1758 /* Connect the video nodes to the resizer subdev. */ 1759 ret = media_entity_create_link(&res->video_in.video.entity, 0, 1760 &res->subdev.entity, RESZ_PAD_SINK, 0); 1761 if (ret < 0) 1762 goto error_link; 1763 1764 ret = media_entity_create_link(&res->subdev.entity, RESZ_PAD_SOURCE, 1765 &res->video_out.video.entity, 0, 0); 1766 if (ret < 0) 1767 goto error_link; 1768 1769 return 0; 1770 1771error_link: 1772 omap3isp_video_cleanup(&res->video_out); 1773error_video_out: 1774 omap3isp_video_cleanup(&res->video_in); 1775error_video_in: 1776 media_entity_cleanup(&res->subdev.entity); 1777 return ret; 1778} 1779 1780/* 1781 * isp_resizer_init - Resizer initialization. 1782 * @isp : Pointer to ISP device 1783 * return -ENOMEM or zero on success 1784 */ 1785int omap3isp_resizer_init(struct isp_device *isp) 1786{ 1787 struct isp_res_device *res = &isp->isp_res; 1788 1789 init_waitqueue_head(&res->wait); 1790 atomic_set(&res->stopping, 0); 1791 spin_lock_init(&res->lock); 1792 1793 return resizer_init_entities(res); 1794} 1795 1796void omap3isp_resizer_cleanup(struct isp_device *isp) 1797{ 1798 struct isp_res_device *res = &isp->isp_res; 1799 1800 omap3isp_video_cleanup(&res->video_in); 1801 omap3isp_video_cleanup(&res->video_out); 1802 media_entity_cleanup(&res->subdev.entity); 1803} 1804