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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * TI VPFE capture Driver4 *5 * Copyright (C) 2013 - 2014 Texas Instruments, Inc.6 *7 * Benoit Parrot <bparrot@ti.com>8 * Lad, Prabhakar <prabhakar.csengg@gmail.com>9 */10 11#include <linux/delay.h>12#include <linux/err.h>13#include <linux/init.h>14#include <linux/interrupt.h>15#include <linux/io.h>16#include <linux/module.h>17#include <linux/of_graph.h>18#include <linux/pinctrl/consumer.h>19#include <linux/platform_device.h>20#include <linux/pm_runtime.h>21#include <linux/slab.h>22#include <linux/uaccess.h>23#include <linux/videodev2.h>24 25#include <media/v4l2-common.h>26#include <media/v4l2-ctrls.h>27#include <media/v4l2-event.h>28#include <media/v4l2-fwnode.h>29#include <media/v4l2-rect.h>30 31#include "am437x-vpfe.h"32 33#define VPFE_MODULE_NAME "vpfe"34#define VPFE_VERSION "0.1.0"35 36static int debug;37module_param(debug, int, 0644);38MODULE_PARM_DESC(debug, "Debug level 0-8");39 40#define vpfe_dbg(level, dev, fmt, arg...) \41 v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ##arg)42#define vpfe_info(dev, fmt, arg...) \43 v4l2_info(&dev->v4l2_dev, fmt, ##arg)44#define vpfe_err(dev, fmt, arg...) \45 v4l2_err(&dev->v4l2_dev, fmt, ##arg)46 47/* standard information */48struct vpfe_standard {49 v4l2_std_id std_id;50 unsigned int width;51 unsigned int height;52 struct v4l2_fract pixelaspect;53 int frame_format;54};55 56static const struct vpfe_standard vpfe_standards[] = {57 {V4L2_STD_525_60, 720, 480, {11, 10}, 1},58 {V4L2_STD_625_50, 720, 576, {54, 59}, 1},59};60 61static struct vpfe_fmt formats[VPFE_NUM_FORMATS] = {62 {63 .fourcc = V4L2_PIX_FMT_YUYV,64 .code = MEDIA_BUS_FMT_YUYV8_2X8,65 .bitsperpixel = 16,66 }, {67 .fourcc = V4L2_PIX_FMT_UYVY,68 .code = MEDIA_BUS_FMT_UYVY8_2X8,69 .bitsperpixel = 16,70 }, {71 .fourcc = V4L2_PIX_FMT_YVYU,72 .code = MEDIA_BUS_FMT_YVYU8_2X8,73 .bitsperpixel = 16,74 }, {75 .fourcc = V4L2_PIX_FMT_VYUY,76 .code = MEDIA_BUS_FMT_VYUY8_2X8,77 .bitsperpixel = 16,78 }, {79 .fourcc = V4L2_PIX_FMT_SBGGR8,80 .code = MEDIA_BUS_FMT_SBGGR8_1X8,81 .bitsperpixel = 8,82 }, {83 .fourcc = V4L2_PIX_FMT_SGBRG8,84 .code = MEDIA_BUS_FMT_SGBRG8_1X8,85 .bitsperpixel = 8,86 }, {87 .fourcc = V4L2_PIX_FMT_SGRBG8,88 .code = MEDIA_BUS_FMT_SGRBG8_1X8,89 .bitsperpixel = 8,90 }, {91 .fourcc = V4L2_PIX_FMT_SRGGB8,92 .code = MEDIA_BUS_FMT_SRGGB8_1X8,93 .bitsperpixel = 8,94 }, {95 .fourcc = V4L2_PIX_FMT_RGB565,96 .code = MEDIA_BUS_FMT_RGB565_2X8_LE,97 .bitsperpixel = 16,98 }, {99 .fourcc = V4L2_PIX_FMT_RGB565X,100 .code = MEDIA_BUS_FMT_RGB565_2X8_BE,101 .bitsperpixel = 16,102 },103};104 105static int __subdev_get_format(struct vpfe_device *vpfe,106 struct v4l2_mbus_framefmt *fmt);107static int vpfe_calc_format_size(struct vpfe_device *vpfe,108 const struct vpfe_fmt *fmt,109 struct v4l2_format *f);110 111static struct vpfe_fmt *find_format_by_code(struct vpfe_device *vpfe,112 unsigned int code)113{114 struct vpfe_fmt *fmt;115 unsigned int k;116 117 for (k = 0; k < vpfe->num_active_fmt; k++) {118 fmt = vpfe->active_fmt[k];119 if (fmt->code == code)120 return fmt;121 }122 123 return NULL;124}125 126static struct vpfe_fmt *find_format_by_pix(struct vpfe_device *vpfe,127 unsigned int pixelformat)128{129 struct vpfe_fmt *fmt;130 unsigned int k;131 132 for (k = 0; k < vpfe->num_active_fmt; k++) {133 fmt = vpfe->active_fmt[k];134 if (fmt->fourcc == pixelformat)135 return fmt;136 }137 138 return NULL;139}140 141static unsigned int __get_bytesperpixel(struct vpfe_device *vpfe,142 const struct vpfe_fmt *fmt)143{144 struct vpfe_subdev_info *sdinfo = vpfe->current_subdev;145 unsigned int bus_width = sdinfo->vpfe_param.bus_width;146 u32 bpp, bus_width_bytes, clocksperpixel;147 148 bus_width_bytes = ALIGN(bus_width, 8) >> 3;149 clocksperpixel = DIV_ROUND_UP(fmt->bitsperpixel, bus_width);150 bpp = clocksperpixel * bus_width_bytes;151 152 return bpp;153}154 155/* Print Four-character-code (FOURCC) */156static char *print_fourcc(u32 fmt)157{158 static char code[5];159 160 code[0] = (unsigned char)(fmt & 0xff);161 code[1] = (unsigned char)((fmt >> 8) & 0xff);162 code[2] = (unsigned char)((fmt >> 16) & 0xff);163 code[3] = (unsigned char)((fmt >> 24) & 0xff);164 code[4] = '\0';165 166 return code;167}168 169static inline u32 vpfe_reg_read(struct vpfe_ccdc *ccdc, u32 offset)170{171 return ioread32(ccdc->ccdc_cfg.base_addr + offset);172}173 174static inline void vpfe_reg_write(struct vpfe_ccdc *ccdc, u32 val, u32 offset)175{176 iowrite32(val, ccdc->ccdc_cfg.base_addr + offset);177}178 179static inline struct vpfe_device *to_vpfe(struct vpfe_ccdc *ccdc)180{181 return container_of(ccdc, struct vpfe_device, ccdc);182}183 184static inline185struct vpfe_cap_buffer *to_vpfe_buffer(struct vb2_v4l2_buffer *vb)186{187 return container_of(vb, struct vpfe_cap_buffer, vb);188}189 190static inline void vpfe_pcr_enable(struct vpfe_ccdc *ccdc, int flag)191{192 vpfe_reg_write(ccdc, !!flag, VPFE_PCR);193}194 195static void vpfe_config_enable(struct vpfe_ccdc *ccdc, int flag)196{197 unsigned int cfg;198 199 if (!flag) {200 cfg = vpfe_reg_read(ccdc, VPFE_CONFIG);201 cfg &= ~(VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT);202 } else {203 cfg = VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT;204 }205 206 vpfe_reg_write(ccdc, cfg, VPFE_CONFIG);207}208 209static void vpfe_ccdc_setwin(struct vpfe_ccdc *ccdc,210 struct v4l2_rect *image_win,211 enum ccdc_frmfmt frm_fmt,212 int bpp)213{214 int horz_start, horz_nr_pixels;215 int vert_start, vert_nr_lines;216 int val, mid_img;217 218 /*219 * ppc - per pixel count. indicates how many pixels per cell220 * output to SDRAM. example, for ycbcr, it is one y and one c, so 2.221 * raw capture this is 1222 */223 horz_start = image_win->left * bpp;224 horz_nr_pixels = (image_win->width * bpp) - 1;225 vpfe_reg_write(ccdc, (horz_start << VPFE_HORZ_INFO_SPH_SHIFT) |226 horz_nr_pixels, VPFE_HORZ_INFO);227 228 vert_start = image_win->top;229 230 if (frm_fmt == CCDC_FRMFMT_INTERLACED) {231 vert_nr_lines = (image_win->height >> 1) - 1;232 vert_start >>= 1;233 /* configure VDINT0 */234 val = (vert_start << VPFE_VDINT_VDINT0_SHIFT);235 } else {236 vert_nr_lines = image_win->height - 1;237 /*238 * configure VDINT0 and VDINT1. VDINT1 will be at half239 * of image height240 */241 mid_img = vert_start + (image_win->height / 2);242 val = (vert_start << VPFE_VDINT_VDINT0_SHIFT) |243 (mid_img & VPFE_VDINT_VDINT1_MASK);244 }245 246 vpfe_reg_write(ccdc, val, VPFE_VDINT);247 248 vpfe_reg_write(ccdc, (vert_start << VPFE_VERT_START_SLV0_SHIFT) |249 vert_start, VPFE_VERT_START);250 vpfe_reg_write(ccdc, vert_nr_lines, VPFE_VERT_LINES);251}252 253static void vpfe_reg_dump(struct vpfe_ccdc *ccdc)254{255 struct vpfe_device *vpfe = to_vpfe(ccdc);256 257 vpfe_dbg(3, vpfe, "ALAW: 0x%x\n", vpfe_reg_read(ccdc, VPFE_ALAW));258 vpfe_dbg(3, vpfe, "CLAMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_CLAMP));259 vpfe_dbg(3, vpfe, "DCSUB: 0x%x\n", vpfe_reg_read(ccdc, VPFE_DCSUB));260 vpfe_dbg(3, vpfe, "BLKCMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_BLKCMP));261 vpfe_dbg(3, vpfe, "COLPTN: 0x%x\n", vpfe_reg_read(ccdc, VPFE_COLPTN));262 vpfe_dbg(3, vpfe, "SDOFST: 0x%x\n", vpfe_reg_read(ccdc, VPFE_SDOFST));263 vpfe_dbg(3, vpfe, "SYN_MODE: 0x%x\n",264 vpfe_reg_read(ccdc, VPFE_SYNMODE));265 vpfe_dbg(3, vpfe, "HSIZE_OFF: 0x%x\n",266 vpfe_reg_read(ccdc, VPFE_HSIZE_OFF));267 vpfe_dbg(3, vpfe, "HORZ_INFO: 0x%x\n",268 vpfe_reg_read(ccdc, VPFE_HORZ_INFO));269 vpfe_dbg(3, vpfe, "VERT_START: 0x%x\n",270 vpfe_reg_read(ccdc, VPFE_VERT_START));271 vpfe_dbg(3, vpfe, "VERT_LINES: 0x%x\n",272 vpfe_reg_read(ccdc, VPFE_VERT_LINES));273}274 275static int276vpfe_ccdc_validate_param(struct vpfe_ccdc *ccdc,277 struct vpfe_ccdc_config_params_raw *ccdcparam)278{279 struct vpfe_device *vpfe = to_vpfe(ccdc);280 u8 max_gamma, max_data;281 282 if (!ccdcparam->alaw.enable)283 return 0;284 285 max_gamma = ccdc_gamma_width_max_bit(ccdcparam->alaw.gamma_wd);286 max_data = ccdc_data_size_max_bit(ccdcparam->data_sz);287 288 if (ccdcparam->alaw.gamma_wd > VPFE_CCDC_GAMMA_BITS_09_0 ||289 ccdcparam->data_sz > VPFE_CCDC_DATA_8BITS ||290 max_gamma > max_data) {291 vpfe_dbg(1, vpfe, "Invalid data line select\n");292 return -EINVAL;293 }294 295 return 0;296}297 298static void299vpfe_ccdc_update_raw_params(struct vpfe_ccdc *ccdc,300 struct vpfe_ccdc_config_params_raw *raw_params)301{302 struct vpfe_ccdc_config_params_raw *config_params =303 &ccdc->ccdc_cfg.bayer.config_params;304 305 *config_params = *raw_params;306}307 308/*309 * vpfe_ccdc_restore_defaults()310 * This function will write defaults to all CCDC registers311 */312static void vpfe_ccdc_restore_defaults(struct vpfe_ccdc *ccdc)313{314 int i;315 316 /* Disable CCDC */317 vpfe_pcr_enable(ccdc, 0);318 319 /* set all registers to default value */320 for (i = 4; i <= 0x94; i += 4)321 vpfe_reg_write(ccdc, 0, i);322 323 vpfe_reg_write(ccdc, VPFE_NO_CULLING, VPFE_CULLING);324 vpfe_reg_write(ccdc, VPFE_CCDC_GAMMA_BITS_11_2, VPFE_ALAW);325}326 327static int vpfe_ccdc_close(struct vpfe_ccdc *ccdc, struct device *dev)328{329 struct vpfe_device *vpfe = to_vpfe(ccdc);330 u32 dma_cntl, pcr;331 332 pcr = vpfe_reg_read(ccdc, VPFE_PCR);333 if (pcr)334 vpfe_dbg(1, vpfe, "VPFE_PCR is still set (%x)", pcr);335 336 dma_cntl = vpfe_reg_read(ccdc, VPFE_DMA_CNTL);337 if ((dma_cntl & VPFE_DMA_CNTL_OVERFLOW))338 vpfe_dbg(1, vpfe, "VPFE_DMA_CNTL_OVERFLOW is still set (%x)",339 dma_cntl);340 341 /* Disable CCDC by resetting all register to default POR values */342 vpfe_ccdc_restore_defaults(ccdc);343 344 /* Disabled the module at the CONFIG level */345 vpfe_config_enable(ccdc, 0);346 347 pm_runtime_put_sync(dev);348 return 0;349}350 351static int vpfe_ccdc_set_params(struct vpfe_ccdc *ccdc, void __user *params)352{353 struct vpfe_device *vpfe = to_vpfe(ccdc);354 struct vpfe_ccdc_config_params_raw raw_params;355 int x;356 357 if (ccdc->ccdc_cfg.if_type != VPFE_RAW_BAYER)358 return -EINVAL;359 360 x = copy_from_user(&raw_params, params, sizeof(raw_params));361 if (x) {362 vpfe_dbg(1, vpfe,363 "%s: error in copying ccdc params, %d\n",364 __func__, x);365 return -EFAULT;366 }367 368 if (!vpfe_ccdc_validate_param(ccdc, &raw_params)) {369 vpfe_ccdc_update_raw_params(ccdc, &raw_params);370 return 0;371 }372 373 return -EINVAL;374}375 376/*377 * vpfe_ccdc_config_ycbcr()378 * This function will configure CCDC for YCbCr video capture379 */380static void vpfe_ccdc_config_ycbcr(struct vpfe_ccdc *ccdc)381{382 struct ccdc_params_ycbcr *params = &ccdc->ccdc_cfg.ycbcr;383 u32 syn_mode;384 385 /*386 * first restore the CCDC registers to default values387 * This is important since we assume default values to be set in388 * a lot of registers that we didn't touch389 */390 vpfe_ccdc_restore_defaults(ccdc);391 392 /*393 * configure pixel format, frame format, configure video frame394 * format, enable output to SDRAM, enable internal timing generator395 * and 8bit pack mode396 */397 syn_mode = (((params->pix_fmt & VPFE_SYN_MODE_INPMOD_MASK) <<398 VPFE_SYN_MODE_INPMOD_SHIFT) |399 ((params->frm_fmt & VPFE_SYN_FLDMODE_MASK) <<400 VPFE_SYN_FLDMODE_SHIFT) | VPFE_VDHDEN_ENABLE |401 VPFE_WEN_ENABLE | VPFE_DATA_PACK_ENABLE);402 403 /* setup BT.656 sync mode */404 if (params->bt656_enable) {405 vpfe_reg_write(ccdc, VPFE_REC656IF_BT656_EN, VPFE_REC656IF);406 407 /*408 * configure the FID, VD, HD pin polarity,409 * fld,hd pol positive, vd negative, 8-bit data410 */411 syn_mode |= VPFE_SYN_MODE_VD_POL_NEGATIVE;412 if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT)413 syn_mode |= VPFE_SYN_MODE_10BITS;414 else415 syn_mode |= VPFE_SYN_MODE_8BITS;416 } else {417 /* y/c external sync mode */418 syn_mode |= (((params->fid_pol & VPFE_FID_POL_MASK) <<419 VPFE_FID_POL_SHIFT) |420 ((params->hd_pol & VPFE_HD_POL_MASK) <<421 VPFE_HD_POL_SHIFT) |422 ((params->vd_pol & VPFE_VD_POL_MASK) <<423 VPFE_VD_POL_SHIFT));424 }425 vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE);426 427 /* configure video window */428 vpfe_ccdc_setwin(ccdc, ¶ms->win,429 params->frm_fmt, params->bytesperpixel);430 431 /*432 * configure the order of y cb cr in SDRAM, and disable latch433 * internal register on vsync434 */435 if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT)436 vpfe_reg_write(ccdc,437 (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) |438 VPFE_LATCH_ON_VSYNC_DISABLE |439 VPFE_CCDCFG_BW656_10BIT, VPFE_CCDCFG);440 else441 vpfe_reg_write(ccdc,442 (params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) |443 VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG);444 445 /*446 * configure the horizontal line offset. This should be a447 * on 32 byte boundary. So clear LSB 5 bits448 */449 vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF);450 451 /* configure the memory line offset */452 if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED)453 /* two fields are interleaved in memory */454 vpfe_reg_write(ccdc, VPFE_SDOFST_FIELD_INTERLEAVED,455 VPFE_SDOFST);456}457 458static void459vpfe_ccdc_config_black_clamp(struct vpfe_ccdc *ccdc,460 struct vpfe_ccdc_black_clamp *bclamp)461{462 u32 val;463 464 if (!bclamp->enable) {465 /* configure DCSub */466 val = (bclamp->dc_sub) & VPFE_BLK_DC_SUB_MASK;467 vpfe_reg_write(ccdc, val, VPFE_DCSUB);468 vpfe_reg_write(ccdc, VPFE_CLAMP_DEFAULT_VAL, VPFE_CLAMP);469 return;470 }471 /*472 * Configure gain, Start pixel, No of line to be avg,473 * No of pixel/line to be avg, & Enable the Black clamping474 */475 val = ((bclamp->sgain & VPFE_BLK_SGAIN_MASK) |476 ((bclamp->start_pixel & VPFE_BLK_ST_PXL_MASK) <<477 VPFE_BLK_ST_PXL_SHIFT) |478 ((bclamp->sample_ln & VPFE_BLK_SAMPLE_LINE_MASK) <<479 VPFE_BLK_SAMPLE_LINE_SHIFT) |480 ((bclamp->sample_pixel & VPFE_BLK_SAMPLE_LN_MASK) <<481 VPFE_BLK_SAMPLE_LN_SHIFT) | VPFE_BLK_CLAMP_ENABLE);482 vpfe_reg_write(ccdc, val, VPFE_CLAMP);483 /* If Black clamping is enable then make dcsub 0 */484 vpfe_reg_write(ccdc, VPFE_DCSUB_DEFAULT_VAL, VPFE_DCSUB);485}486 487static void488vpfe_ccdc_config_black_compense(struct vpfe_ccdc *ccdc,489 struct vpfe_ccdc_black_compensation *bcomp)490{491 u32 val;492 493 val = ((bcomp->b & VPFE_BLK_COMP_MASK) |494 ((bcomp->gb & VPFE_BLK_COMP_MASK) <<495 VPFE_BLK_COMP_GB_COMP_SHIFT) |496 ((bcomp->gr & VPFE_BLK_COMP_MASK) <<497 VPFE_BLK_COMP_GR_COMP_SHIFT) |498 ((bcomp->r & VPFE_BLK_COMP_MASK) <<499 VPFE_BLK_COMP_R_COMP_SHIFT));500 vpfe_reg_write(ccdc, val, VPFE_BLKCMP);501}502 503/*504 * vpfe_ccdc_config_raw()505 * This function will configure CCDC for Raw capture mode506 */507static void vpfe_ccdc_config_raw(struct vpfe_ccdc *ccdc)508{509 struct vpfe_device *vpfe = to_vpfe(ccdc);510 struct vpfe_ccdc_config_params_raw *config_params =511 &ccdc->ccdc_cfg.bayer.config_params;512 struct ccdc_params_raw *params = &ccdc->ccdc_cfg.bayer;513 unsigned int syn_mode;514 unsigned int val;515 516 /* Reset CCDC */517 vpfe_ccdc_restore_defaults(ccdc);518 519 /* Disable latching function registers on VSYNC */520 vpfe_reg_write(ccdc, VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG);521 522 /*523 * Configure the vertical sync polarity(SYN_MODE.VDPOL),524 * horizontal sync polarity (SYN_MODE.HDPOL), frame id polarity525 * (SYN_MODE.FLDPOL), frame format(progressive or interlace),526 * data size(SYNMODE.DATSIZ), &pixel format (Input mode), output527 * SDRAM, enable internal timing generator528 */529 syn_mode = (((params->vd_pol & VPFE_VD_POL_MASK) << VPFE_VD_POL_SHIFT) |530 ((params->hd_pol & VPFE_HD_POL_MASK) << VPFE_HD_POL_SHIFT) |531 ((params->fid_pol & VPFE_FID_POL_MASK) <<532 VPFE_FID_POL_SHIFT) | ((params->frm_fmt &533 VPFE_FRM_FMT_MASK) << VPFE_FRM_FMT_SHIFT) |534 ((config_params->data_sz & VPFE_DATA_SZ_MASK) <<535 VPFE_DATA_SZ_SHIFT) | ((params->pix_fmt &536 VPFE_PIX_FMT_MASK) << VPFE_PIX_FMT_SHIFT) |537 VPFE_WEN_ENABLE | VPFE_VDHDEN_ENABLE);538 539 /* Enable and configure aLaw register if needed */540 if (config_params->alaw.enable) {541 val = ((config_params->alaw.gamma_wd &542 VPFE_ALAW_GAMMA_WD_MASK) | VPFE_ALAW_ENABLE);543 vpfe_reg_write(ccdc, val, VPFE_ALAW);544 vpfe_dbg(3, vpfe, "\nWriting 0x%x to ALAW...\n", val);545 }546 547 /* Configure video window */548 vpfe_ccdc_setwin(ccdc, ¶ms->win, params->frm_fmt,549 params->bytesperpixel);550 551 /* Configure Black Clamp */552 vpfe_ccdc_config_black_clamp(ccdc, &config_params->blk_clamp);553 554 /* Configure Black level compensation */555 vpfe_ccdc_config_black_compense(ccdc, &config_params->blk_comp);556 557 /* If data size is 8 bit then pack the data */558 if ((config_params->data_sz == VPFE_CCDC_DATA_8BITS) ||559 config_params->alaw.enable)560 syn_mode |= VPFE_DATA_PACK_ENABLE;561 562 /*563 * Configure Horizontal offset register. If pack 8 is enabled then564 * 1 pixel will take 1 byte565 */566 vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF);567 568 vpfe_dbg(3, vpfe, "Writing %d (%x) to HSIZE_OFF\n",569 params->bytesperline, params->bytesperline);570 571 /* Set value for SDOFST */572 if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) {573 if (params->image_invert_enable) {574 /* For interlace inverse mode */575 vpfe_reg_write(ccdc, VPFE_INTERLACED_IMAGE_INVERT,576 VPFE_SDOFST);577 } else {578 /* For interlace non inverse mode */579 vpfe_reg_write(ccdc, VPFE_INTERLACED_NO_IMAGE_INVERT,580 VPFE_SDOFST);581 }582 } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {583 vpfe_reg_write(ccdc, VPFE_PROGRESSIVE_NO_IMAGE_INVERT,584 VPFE_SDOFST);585 }586 587 vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE);588 589 vpfe_reg_dump(ccdc);590}591 592static inline int593vpfe_ccdc_set_buftype(struct vpfe_ccdc *ccdc,594 enum ccdc_buftype buf_type)595{596 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)597 ccdc->ccdc_cfg.bayer.buf_type = buf_type;598 else599 ccdc->ccdc_cfg.ycbcr.buf_type = buf_type;600 601 return 0;602}603 604static inline enum ccdc_buftype vpfe_ccdc_get_buftype(struct vpfe_ccdc *ccdc)605{606 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)607 return ccdc->ccdc_cfg.bayer.buf_type;608 609 return ccdc->ccdc_cfg.ycbcr.buf_type;610}611 612static int vpfe_ccdc_set_pixel_format(struct vpfe_ccdc *ccdc, u32 pixfmt)613{614 struct vpfe_device *vpfe = to_vpfe(ccdc);615 616 vpfe_dbg(1, vpfe, "%s: if_type: %d, pixfmt:%s\n",617 __func__, ccdc->ccdc_cfg.if_type, print_fourcc(pixfmt));618 619 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {620 ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;621 /*622 * Need to clear it in case it was left on623 * after the last capture.624 */625 ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 0;626 627 switch (pixfmt) {628 case V4L2_PIX_FMT_SBGGR8:629 ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 1;630 break;631 632 case V4L2_PIX_FMT_YUYV:633 case V4L2_PIX_FMT_UYVY:634 case V4L2_PIX_FMT_YUV420:635 case V4L2_PIX_FMT_NV12:636 case V4L2_PIX_FMT_RGB565X:637 break;638 639 case V4L2_PIX_FMT_SBGGR16:640 default:641 return -EINVAL;642 }643 } else {644 switch (pixfmt) {645 case V4L2_PIX_FMT_YUYV:646 ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR;647 break;648 649 case V4L2_PIX_FMT_UYVY:650 ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;651 break;652 653 default:654 return -EINVAL;655 }656 }657 658 return 0;659}660 661static u32 vpfe_ccdc_get_pixel_format(struct vpfe_ccdc *ccdc)662{663 u32 pixfmt;664 665 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {666 pixfmt = V4L2_PIX_FMT_YUYV;667 } else {668 if (ccdc->ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR)669 pixfmt = V4L2_PIX_FMT_YUYV;670 else671 pixfmt = V4L2_PIX_FMT_UYVY;672 }673 674 return pixfmt;675}676 677static int678vpfe_ccdc_set_image_window(struct vpfe_ccdc *ccdc,679 struct v4l2_rect *win, unsigned int bpp)680{681 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {682 ccdc->ccdc_cfg.bayer.win = *win;683 ccdc->ccdc_cfg.bayer.bytesperpixel = bpp;684 ccdc->ccdc_cfg.bayer.bytesperline = ALIGN(win->width * bpp, 32);685 } else {686 ccdc->ccdc_cfg.ycbcr.win = *win;687 ccdc->ccdc_cfg.ycbcr.bytesperpixel = bpp;688 ccdc->ccdc_cfg.ycbcr.bytesperline = ALIGN(win->width * bpp, 32);689 }690 691 return 0;692}693 694static inline void695vpfe_ccdc_get_image_window(struct vpfe_ccdc *ccdc,696 struct v4l2_rect *win)697{698 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)699 *win = ccdc->ccdc_cfg.bayer.win;700 else701 *win = ccdc->ccdc_cfg.ycbcr.win;702}703 704static inline unsigned int vpfe_ccdc_get_line_length(struct vpfe_ccdc *ccdc)705{706 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)707 return ccdc->ccdc_cfg.bayer.bytesperline;708 709 return ccdc->ccdc_cfg.ycbcr.bytesperline;710}711 712static inline int713vpfe_ccdc_set_frame_format(struct vpfe_ccdc *ccdc,714 enum ccdc_frmfmt frm_fmt)715{716 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)717 ccdc->ccdc_cfg.bayer.frm_fmt = frm_fmt;718 else719 ccdc->ccdc_cfg.ycbcr.frm_fmt = frm_fmt;720 721 return 0;722}723 724static inline enum ccdc_frmfmt725vpfe_ccdc_get_frame_format(struct vpfe_ccdc *ccdc)726{727 if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)728 return ccdc->ccdc_cfg.bayer.frm_fmt;729 730 return ccdc->ccdc_cfg.ycbcr.frm_fmt;731}732 733static inline int vpfe_ccdc_getfid(struct vpfe_ccdc *ccdc)734{735 return (vpfe_reg_read(ccdc, VPFE_SYNMODE) >> 15) & 1;736}737 738static inline void vpfe_set_sdr_addr(struct vpfe_ccdc *ccdc, unsigned long addr)739{740 vpfe_reg_write(ccdc, addr & 0xffffffe0, VPFE_SDR_ADDR);741}742 743static int vpfe_ccdc_set_hw_if_params(struct vpfe_ccdc *ccdc,744 struct vpfe_hw_if_param *params)745{746 struct vpfe_device *vpfe = to_vpfe(ccdc);747 748 ccdc->ccdc_cfg.if_type = params->if_type;749 750 switch (params->if_type) {751 case VPFE_BT656:752 case VPFE_YCBCR_SYNC_16:753 case VPFE_YCBCR_SYNC_8:754 case VPFE_BT656_10BIT:755 ccdc->ccdc_cfg.ycbcr.vd_pol = params->vdpol;756 ccdc->ccdc_cfg.ycbcr.hd_pol = params->hdpol;757 break;758 759 case VPFE_RAW_BAYER:760 ccdc->ccdc_cfg.bayer.vd_pol = params->vdpol;761 ccdc->ccdc_cfg.bayer.hd_pol = params->hdpol;762 if (params->bus_width == 10)763 ccdc->ccdc_cfg.bayer.config_params.data_sz =764 VPFE_CCDC_DATA_10BITS;765 else766 ccdc->ccdc_cfg.bayer.config_params.data_sz =767 VPFE_CCDC_DATA_8BITS;768 vpfe_dbg(1, vpfe, "params.bus_width: %d\n",769 params->bus_width);770 vpfe_dbg(1, vpfe, "config_params.data_sz: %d\n",771 ccdc->ccdc_cfg.bayer.config_params.data_sz);772 break;773 774 default:775 return -EINVAL;776 }777 778 return 0;779}780 781static void vpfe_clear_intr(struct vpfe_ccdc *ccdc, int vdint)782{783 unsigned int vpfe_int_status;784 785 vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS);786 787 switch (vdint) {788 /* VD0 interrupt */789 case VPFE_VDINT0:790 vpfe_int_status &= ~VPFE_VDINT0;791 vpfe_int_status |= VPFE_VDINT0;792 break;793 794 /* VD1 interrupt */795 case VPFE_VDINT1:796 vpfe_int_status &= ~VPFE_VDINT1;797 vpfe_int_status |= VPFE_VDINT1;798 break;799 800 /* VD2 interrupt */801 case VPFE_VDINT2:802 vpfe_int_status &= ~VPFE_VDINT2;803 vpfe_int_status |= VPFE_VDINT2;804 break;805 806 /* Clear all interrupts */807 default:808 vpfe_int_status &= ~(VPFE_VDINT0 |809 VPFE_VDINT1 |810 VPFE_VDINT2);811 vpfe_int_status |= (VPFE_VDINT0 |812 VPFE_VDINT1 |813 VPFE_VDINT2);814 break;815 }816 /* Clear specific VDINT from the status register */817 vpfe_reg_write(ccdc, vpfe_int_status, VPFE_IRQ_STS);818 819 vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS);820 821 /* Acknowledge that we are done with all interrupts */822 vpfe_reg_write(ccdc, 1, VPFE_IRQ_EOI);823}824 825static void vpfe_ccdc_config_defaults(struct vpfe_ccdc *ccdc)826{827 ccdc->ccdc_cfg.if_type = VPFE_RAW_BAYER;828 829 ccdc->ccdc_cfg.ycbcr.pix_fmt = CCDC_PIXFMT_YCBCR_8BIT;830 ccdc->ccdc_cfg.ycbcr.frm_fmt = CCDC_FRMFMT_INTERLACED;831 ccdc->ccdc_cfg.ycbcr.fid_pol = VPFE_PINPOL_POSITIVE;832 ccdc->ccdc_cfg.ycbcr.vd_pol = VPFE_PINPOL_POSITIVE;833 ccdc->ccdc_cfg.ycbcr.hd_pol = VPFE_PINPOL_POSITIVE;834 ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;835 ccdc->ccdc_cfg.ycbcr.buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED;836 837 ccdc->ccdc_cfg.ycbcr.win.left = 0;838 ccdc->ccdc_cfg.ycbcr.win.top = 0;839 ccdc->ccdc_cfg.ycbcr.win.width = 720;840 ccdc->ccdc_cfg.ycbcr.win.height = 576;841 ccdc->ccdc_cfg.ycbcr.bt656_enable = 1;842 843 ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;844 ccdc->ccdc_cfg.bayer.frm_fmt = CCDC_FRMFMT_PROGRESSIVE;845 ccdc->ccdc_cfg.bayer.fid_pol = VPFE_PINPOL_POSITIVE;846 ccdc->ccdc_cfg.bayer.vd_pol = VPFE_PINPOL_POSITIVE;847 ccdc->ccdc_cfg.bayer.hd_pol = VPFE_PINPOL_POSITIVE;848 849 ccdc->ccdc_cfg.bayer.win.left = 0;850 ccdc->ccdc_cfg.bayer.win.top = 0;851 ccdc->ccdc_cfg.bayer.win.width = 800;852 ccdc->ccdc_cfg.bayer.win.height = 600;853 ccdc->ccdc_cfg.bayer.config_params.data_sz = VPFE_CCDC_DATA_8BITS;854 ccdc->ccdc_cfg.bayer.config_params.alaw.gamma_wd =855 VPFE_CCDC_GAMMA_BITS_09_0;856}857 858/*859 * vpfe_get_ccdc_image_format - Get image parameters based on CCDC settings860 */861static int vpfe_get_ccdc_image_format(struct vpfe_device *vpfe,862 struct v4l2_format *f)863{864 struct v4l2_rect image_win;865 enum ccdc_buftype buf_type;866 enum ccdc_frmfmt frm_fmt;867 868 memset(f, 0, sizeof(*f));869 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;870 vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win);871 f->fmt.pix.width = image_win.width;872 f->fmt.pix.height = image_win.height;873 f->fmt.pix.bytesperline = vpfe_ccdc_get_line_length(&vpfe->ccdc);874 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *875 f->fmt.pix.height;876 buf_type = vpfe_ccdc_get_buftype(&vpfe->ccdc);877 f->fmt.pix.pixelformat = vpfe_ccdc_get_pixel_format(&vpfe->ccdc);878 frm_fmt = vpfe_ccdc_get_frame_format(&vpfe->ccdc);879 880 if (frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {881 f->fmt.pix.field = V4L2_FIELD_NONE;882 } else if (frm_fmt == CCDC_FRMFMT_INTERLACED) {883 if (buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) {884 f->fmt.pix.field = V4L2_FIELD_INTERLACED;885 } else if (buf_type == CCDC_BUFTYPE_FLD_SEPARATED) {886 f->fmt.pix.field = V4L2_FIELD_SEQ_TB;887 } else {888 vpfe_err(vpfe, "Invalid buf_type\n");889 return -EINVAL;890 }891 } else {892 vpfe_err(vpfe, "Invalid frm_fmt\n");893 return -EINVAL;894 }895 return 0;896}897 898static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe)899{900 enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED;901 u32 bpp;902 int ret = 0;903 904 vpfe_dbg(1, vpfe, "pixelformat: %s\n",905 print_fourcc(vpfe->fmt.fmt.pix.pixelformat));906 907 if (vpfe_ccdc_set_pixel_format(&vpfe->ccdc,908 vpfe->fmt.fmt.pix.pixelformat) < 0) {909 vpfe_err(vpfe, "couldn't set pix format in ccdc\n");910 return -EINVAL;911 }912 913 /* configure the image window */914 bpp = __get_bytesperpixel(vpfe, vpfe->current_vpfe_fmt);915 vpfe_ccdc_set_image_window(&vpfe->ccdc, &vpfe->crop, bpp);916 917 switch (vpfe->fmt.fmt.pix.field) {918 case V4L2_FIELD_INTERLACED:919 /* do nothing, since it is default */920 ret = vpfe_ccdc_set_buftype(921 &vpfe->ccdc,922 CCDC_BUFTYPE_FLD_INTERLEAVED);923 break;924 925 case V4L2_FIELD_NONE:926 frm_fmt = CCDC_FRMFMT_PROGRESSIVE;927 /* buffer type only applicable for interlaced scan */928 break;929 930 case V4L2_FIELD_SEQ_TB:931 ret = vpfe_ccdc_set_buftype(932 &vpfe->ccdc,933 CCDC_BUFTYPE_FLD_SEPARATED);934 break;935 936 default:937 return -EINVAL;938 }939 940 if (ret)941 return ret;942 943 return vpfe_ccdc_set_frame_format(&vpfe->ccdc, frm_fmt);944}945 946/*947 * vpfe_config_image_format()948 * For a given standard, this functions sets up the default949 * pix format & crop values in the vpfe device and ccdc. It first950 * starts with defaults based values from the standard table.951 * It then checks if sub device supports get_fmt and then override the952 * values based on that.Sets crop values to match with scan resolution953 * starting at 0,0. It calls vpfe_config_ccdc_image_format() set the954 * values in ccdc955 */956static int vpfe_config_image_format(struct vpfe_device *vpfe,957 v4l2_std_id std_id)958{959 struct vpfe_fmt *fmt;960 struct v4l2_mbus_framefmt mbus_fmt;961 int i, ret;962 963 for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) {964 if (vpfe_standards[i].std_id & std_id) {965 vpfe->std_info.active_pixels =966 vpfe_standards[i].width;967 vpfe->std_info.active_lines =968 vpfe_standards[i].height;969 vpfe->std_info.frame_format =970 vpfe_standards[i].frame_format;971 vpfe->std_index = i;972 973 break;974 }975 }976 977 if (i == ARRAY_SIZE(vpfe_standards)) {978 vpfe_err(vpfe, "standard not supported\n");979 return -EINVAL;980 }981 982 ret = __subdev_get_format(vpfe, &mbus_fmt);983 if (ret)984 return ret;985 986 fmt = find_format_by_code(vpfe, mbus_fmt.code);987 if (!fmt) {988 vpfe_dbg(3, vpfe, "mbus code format (0x%08x) not found.\n",989 mbus_fmt.code);990 return -EINVAL;991 }992 993 /* Save current subdev format */994 v4l2_fill_pix_format(&vpfe->fmt.fmt.pix, &mbus_fmt);995 vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;996 vpfe->fmt.fmt.pix.pixelformat = fmt->fourcc;997 vpfe_calc_format_size(vpfe, fmt, &vpfe->fmt);998 vpfe->current_vpfe_fmt = fmt;999 1000 /* Update the crop window based on found values */1001 vpfe->crop.top = 0;1002 vpfe->crop.left = 0;1003 vpfe->crop.width = mbus_fmt.width;1004 vpfe->crop.height = mbus_fmt.height;1005 1006 return vpfe_config_ccdc_image_format(vpfe);1007}1008 1009static int vpfe_initialize_device(struct vpfe_device *vpfe)1010{1011 struct vpfe_subdev_info *sdinfo;1012 int ret;1013 1014 sdinfo = &vpfe->cfg->sub_devs[0];1015 sdinfo->sd = vpfe->sd[0];1016 vpfe->current_input = 0;1017 vpfe->std_index = 0;1018 /* Configure the default format information */1019 ret = vpfe_config_image_format(vpfe,1020 vpfe_standards[vpfe->std_index].std_id);1021 if (ret)1022 return ret;1023 1024 ret = pm_runtime_resume_and_get(vpfe->pdev);1025 if (ret < 0)1026 return ret;1027 1028 vpfe_config_enable(&vpfe->ccdc, 1);1029 1030 vpfe_ccdc_restore_defaults(&vpfe->ccdc);1031 1032 /* Clear all VPFE interrupts */1033 vpfe_clear_intr(&vpfe->ccdc, -1);1034 1035 return ret;1036}1037 1038/*1039 * vpfe_release : This function is based on the vb2_fop_release1040 * helper function.1041 * It has been augmented to handle module power management,1042 * by disabling/enabling h/w module fcntl clock when necessary.1043 */1044static int vpfe_release(struct file *file)1045{1046 struct vpfe_device *vpfe = video_drvdata(file);1047 bool fh_singular;1048 int ret;1049 1050 mutex_lock(&vpfe->lock);1051 1052 /* Save the singular status before we call the clean-up helper */1053 fh_singular = v4l2_fh_is_singular_file(file);1054 1055 /* the release helper will cleanup any on-going streaming */1056 ret = _vb2_fop_release(file, NULL);1057 1058 /*1059 * If this was the last open file.1060 * Then de-initialize hw module.1061 */1062 if (fh_singular)1063 vpfe_ccdc_close(&vpfe->ccdc, vpfe->pdev);1064 1065 mutex_unlock(&vpfe->lock);1066 1067 return ret;1068}1069 1070/*1071 * vpfe_open : This function is based on the v4l2_fh_open helper function.1072 * It has been augmented to handle module power management,1073 * by disabling/enabling h/w module fcntl clock when necessary.1074 */1075static int vpfe_open(struct file *file)1076{1077 struct vpfe_device *vpfe = video_drvdata(file);1078 int ret;1079 1080 mutex_lock(&vpfe->lock);1081 1082 ret = v4l2_fh_open(file);1083 if (ret) {1084 vpfe_err(vpfe, "v4l2_fh_open failed\n");1085 goto unlock;1086 }1087 1088 if (!v4l2_fh_is_singular_file(file))1089 goto unlock;1090 1091 if (vpfe_initialize_device(vpfe)) {1092 v4l2_fh_release(file);1093 ret = -ENODEV;1094 }1095 1096unlock:1097 mutex_unlock(&vpfe->lock);1098 return ret;1099}1100 1101/**1102 * vpfe_schedule_next_buffer: set next buffer address for capture1103 * @vpfe : ptr to vpfe device1104 *1105 * This function will get next buffer from the dma queue and1106 * set the buffer address in the vpfe register for capture.1107 * the buffer is marked active1108 */1109static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe)1110{1111 dma_addr_t addr;1112 1113 spin_lock(&vpfe->dma_queue_lock);1114 if (list_empty(&vpfe->dma_queue)) {1115 spin_unlock(&vpfe->dma_queue_lock);1116 return;1117 }1118 1119 vpfe->next_frm = list_entry(vpfe->dma_queue.next,1120 struct vpfe_cap_buffer, list);1121 list_del(&vpfe->next_frm->list);1122 spin_unlock(&vpfe->dma_queue_lock);1123 1124 addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb.vb2_buf, 0);1125 vpfe_set_sdr_addr(&vpfe->ccdc, addr);1126}1127 1128static inline void vpfe_schedule_bottom_field(struct vpfe_device *vpfe)1129{1130 dma_addr_t addr;1131 1132 addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb.vb2_buf, 0) +1133 vpfe->field_off;1134 1135 vpfe_set_sdr_addr(&vpfe->ccdc, addr);1136}1137 1138/*1139 * vpfe_process_buffer_complete: process a completed buffer1140 * @vpfe : ptr to vpfe device1141 *1142 * This function time stamp the buffer and mark it as DONE. It also1143 * wake up any process waiting on the QUEUE and set the next buffer1144 * as current1145 */1146static inline void vpfe_process_buffer_complete(struct vpfe_device *vpfe)1147{1148 vpfe->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();1149 vpfe->cur_frm->vb.field = vpfe->fmt.fmt.pix.field;1150 vpfe->cur_frm->vb.sequence = vpfe->sequence++;1151 vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);1152 vpfe->cur_frm = vpfe->next_frm;1153}1154 1155static void vpfe_handle_interlaced_irq(struct vpfe_device *vpfe,1156 enum v4l2_field field)1157{1158 int fid;1159 1160 /* interlaced or TB capture check which field1161 * we are in hardware1162 */1163 fid = vpfe_ccdc_getfid(&vpfe->ccdc);1164 1165 /* switch the software maintained field id */1166 vpfe->field ^= 1;1167 if (fid == vpfe->field) {1168 /* we are in-sync here,continue */1169 if (fid == 0) {1170 /*1171 * One frame is just being captured. If the1172 * next frame is available, release the1173 * current frame and move on1174 */1175 if (vpfe->cur_frm != vpfe->next_frm)1176 vpfe_process_buffer_complete(vpfe);1177 1178 if (vpfe->stopping)1179 return;1180 1181 /*1182 * based on whether the two fields are stored1183 * interleave or separately in memory,1184 * reconfigure the CCDC memory address1185 */1186 if (field == V4L2_FIELD_SEQ_TB)1187 vpfe_schedule_bottom_field(vpfe);1188 } else {1189 /*1190 * if one field is just being captured configure1191 * the next frame get the next frame from the empty1192 * queue if no frame is available hold on to the1193 * current buffer1194 */1195 if (vpfe->cur_frm == vpfe->next_frm)1196 vpfe_schedule_next_buffer(vpfe);1197 }1198 } else if (fid == 0) {1199 /*1200 * out of sync. Recover from any hardware out-of-sync.1201 * May loose one frame1202 */1203 vpfe->field = fid;1204 }1205}1206 1207/*1208 * vpfe_isr : ISR handler for vpfe capture (VINT0)1209 * @irq: irq number1210 * @dev_id: dev_id ptr1211 *1212 * It changes status of the captured buffer, takes next buffer from the queue1213 * and sets its address in VPFE registers1214 */1215static irqreturn_t vpfe_isr(int irq, void *dev)1216{1217 struct vpfe_device *vpfe = (struct vpfe_device *)dev;1218 enum v4l2_field field = vpfe->fmt.fmt.pix.field;1219 int intr_status, stopping = vpfe->stopping;1220 1221 intr_status = vpfe_reg_read(&vpfe->ccdc, VPFE_IRQ_STS);1222 1223 if (intr_status & VPFE_VDINT0) {1224 if (field == V4L2_FIELD_NONE) {1225 if (vpfe->cur_frm != vpfe->next_frm)1226 vpfe_process_buffer_complete(vpfe);1227 } else {1228 vpfe_handle_interlaced_irq(vpfe, field);1229 }1230 if (stopping) {1231 vpfe->stopping = false;1232 complete(&vpfe->capture_stop);1233 }1234 }1235 1236 if (intr_status & VPFE_VDINT1 && !stopping) {1237 if (field == V4L2_FIELD_NONE &&1238 vpfe->cur_frm == vpfe->next_frm)1239 vpfe_schedule_next_buffer(vpfe);1240 }1241 1242 vpfe_clear_intr(&vpfe->ccdc, intr_status);1243 1244 return IRQ_HANDLED;1245}1246 1247static inline void vpfe_detach_irq(struct vpfe_device *vpfe)1248{1249 unsigned int intr = VPFE_VDINT0;1250 enum ccdc_frmfmt frame_format;1251 1252 frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc);1253 if (frame_format == CCDC_FRMFMT_PROGRESSIVE)1254 intr |= VPFE_VDINT1;1255 1256 vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_CLR);1257}1258 1259static inline void vpfe_attach_irq(struct vpfe_device *vpfe)1260{1261 unsigned int intr = VPFE_VDINT0;1262 enum ccdc_frmfmt frame_format;1263 1264 frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc);1265 if (frame_format == CCDC_FRMFMT_PROGRESSIVE)1266 intr |= VPFE_VDINT1;1267 1268 vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_SET);1269}1270 1271static int vpfe_querycap(struct file *file, void *priv,1272 struct v4l2_capability *cap)1273{1274 strscpy(cap->driver, VPFE_MODULE_NAME, sizeof(cap->driver));1275 strscpy(cap->card, "TI AM437x VPFE", sizeof(cap->card));1276 return 0;1277}1278 1279/* get the format set at output pad of the adjacent subdev */1280static int __subdev_get_format(struct vpfe_device *vpfe,1281 struct v4l2_mbus_framefmt *fmt)1282{1283 struct v4l2_subdev *sd = vpfe->current_subdev->sd;1284 struct v4l2_subdev_format sd_fmt = {1285 .which = V4L2_SUBDEV_FORMAT_ACTIVE,1286 .pad = 0,1287 };1288 struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;1289 int ret;1290 1291 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sd_fmt);1292 if (ret)1293 return ret;1294 1295 *fmt = *mbus_fmt;1296 1297 vpfe_dbg(1, vpfe, "%s: %dx%d code:%04X\n", __func__,1298 fmt->width, fmt->height, fmt->code);1299 1300 return 0;1301}1302 1303/* set the format at output pad of the adjacent subdev */1304static int __subdev_set_format(struct vpfe_device *vpfe,1305 struct v4l2_mbus_framefmt *fmt)1306{1307 struct v4l2_subdev *sd = vpfe->current_subdev->sd;1308 struct v4l2_subdev_format sd_fmt = {1309 .which = V4L2_SUBDEV_FORMAT_ACTIVE,1310 .pad = 0,1311 };1312 struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;1313 int ret;1314 1315 *mbus_fmt = *fmt;1316 1317 ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sd_fmt);1318 if (ret)1319 return ret;1320 1321 vpfe_dbg(1, vpfe, "%s %dx%d code:%04X\n", __func__,1322 fmt->width, fmt->height, fmt->code);1323 1324 return 0;1325}1326 1327static int vpfe_calc_format_size(struct vpfe_device *vpfe,1328 const struct vpfe_fmt *fmt,1329 struct v4l2_format *f)1330{1331 u32 bpp;1332 1333 if (!fmt) {1334 vpfe_dbg(3, vpfe, "No vpfe_fmt provided!\n");1335 return -EINVAL;1336 }1337 1338 bpp = __get_bytesperpixel(vpfe, fmt);1339 1340 /* pitch should be 32 bytes aligned */1341 f->fmt.pix.bytesperline = ALIGN(f->fmt.pix.width * bpp, 32);1342 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *1343 f->fmt.pix.height;1344 1345 vpfe_dbg(3, vpfe, "%s: fourcc: %s size: %dx%d bpl:%d img_size:%d\n",1346 __func__, print_fourcc(f->fmt.pix.pixelformat),1347 f->fmt.pix.width, f->fmt.pix.height,1348 f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);1349 1350 return 0;1351}1352 1353static int vpfe_g_fmt(struct file *file, void *priv,1354 struct v4l2_format *fmt)1355{1356 struct vpfe_device *vpfe = video_drvdata(file);1357 1358 *fmt = vpfe->fmt;1359 1360 return 0;1361}1362 1363static int vpfe_enum_fmt(struct file *file, void *priv,1364 struct v4l2_fmtdesc *f)1365{1366 struct vpfe_device *vpfe = video_drvdata(file);1367 struct vpfe_subdev_info *sdinfo;1368 struct vpfe_fmt *fmt;1369 1370 sdinfo = vpfe->current_subdev;1371 if (!sdinfo->sd)1372 return -EINVAL;1373 1374 if (f->index >= vpfe->num_active_fmt)1375 return -EINVAL;1376 1377 fmt = vpfe->active_fmt[f->index];1378 1379 f->pixelformat = fmt->fourcc;1380 1381 vpfe_dbg(1, vpfe, "%s: mbus index: %d code: %x pixelformat: %s\n",1382 __func__, f->index, fmt->code, print_fourcc(fmt->fourcc));1383 1384 return 0;1385}1386 1387static int vpfe_try_fmt(struct file *file, void *priv,1388 struct v4l2_format *f)1389{1390 struct vpfe_device *vpfe = video_drvdata(file);1391 struct v4l2_subdev *sd = vpfe->current_subdev->sd;1392 const struct vpfe_fmt *fmt;1393 struct v4l2_subdev_frame_size_enum fse = {1394 .which = V4L2_SUBDEV_FORMAT_ACTIVE,1395 };1396 int ret, found;1397 1398 fmt = find_format_by_pix(vpfe, f->fmt.pix.pixelformat);1399 if (!fmt) {1400 /* default to first entry */1401 vpfe_dbg(3, vpfe, "Invalid pixel code: %x, default used instead\n",1402 f->fmt.pix.pixelformat);1403 fmt = vpfe->active_fmt[0];1404 f->fmt.pix.pixelformat = fmt->fourcc;1405 }1406 1407 f->fmt.pix.field = vpfe->fmt.fmt.pix.field;1408 1409 /* check for/find a valid width/height */1410 ret = 0;1411 found = false;1412 fse.pad = 0;1413 fse.code = fmt->code;1414 for (fse.index = 0; ; fse.index++) {1415 ret = v4l2_subdev_call(sd, pad, enum_frame_size,1416 NULL, &fse);1417 if (ret)1418 break;1419 1420 if (f->fmt.pix.width == fse.max_width &&1421 f->fmt.pix.height == fse.max_height) {1422 found = true;1423 break;1424 } else if (f->fmt.pix.width >= fse.min_width &&1425 f->fmt.pix.width <= fse.max_width &&1426 f->fmt.pix.height >= fse.min_height &&1427 f->fmt.pix.height <= fse.max_height) {1428 found = true;1429 break;1430 }1431 }1432 1433 if (!found) {1434 /* use existing values as default */1435 f->fmt.pix.width = vpfe->fmt.fmt.pix.width;1436 f->fmt.pix.height = vpfe->fmt.fmt.pix.height;1437 }1438 1439 /*1440 * Use current colorspace for now, it will get1441 * updated properly during s_fmt1442 */1443 f->fmt.pix.colorspace = vpfe->fmt.fmt.pix.colorspace;1444 return vpfe_calc_format_size(vpfe, fmt, f);1445}1446 1447static int vpfe_s_fmt(struct file *file, void *priv,1448 struct v4l2_format *fmt)1449{1450 struct vpfe_device *vpfe = video_drvdata(file);1451 struct vpfe_fmt *f;1452 struct v4l2_mbus_framefmt mbus_fmt;1453 int ret;1454 1455 /* If streaming is started, return error */1456 if (vb2_is_busy(&vpfe->buffer_queue)) {1457 vpfe_err(vpfe, "%s device busy\n", __func__);1458 return -EBUSY;1459 }1460 1461 ret = vpfe_try_fmt(file, priv, fmt);1462 if (ret < 0)1463 return ret;1464 1465 f = find_format_by_pix(vpfe, fmt->fmt.pix.pixelformat);1466 1467 v4l2_fill_mbus_format(&mbus_fmt, &fmt->fmt.pix, f->code);1468 1469 ret = __subdev_set_format(vpfe, &mbus_fmt);1470 if (ret)1471 return ret;1472 1473 /* Just double check nothing has gone wrong */1474 if (mbus_fmt.code != f->code) {1475 vpfe_dbg(3, vpfe,1476 "%s subdev changed format on us, this should not happen\n",1477 __func__);1478 return -EINVAL;1479 }1480 1481 v4l2_fill_pix_format(&vpfe->fmt.fmt.pix, &mbus_fmt);1482 vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;1483 vpfe->fmt.fmt.pix.pixelformat = f->fourcc;1484 vpfe_calc_format_size(vpfe, f, &vpfe->fmt);1485 *fmt = vpfe->fmt;1486 vpfe->current_vpfe_fmt = f;1487 1488 /* Update the crop window based on found values */1489 vpfe->crop.width = fmt->fmt.pix.width;1490 vpfe->crop.height = fmt->fmt.pix.height;1491 1492 /* set image capture parameters in the ccdc */1493 return vpfe_config_ccdc_image_format(vpfe);1494}1495 1496static int vpfe_enum_size(struct file *file, void *priv,1497 struct v4l2_frmsizeenum *fsize)1498{1499 struct vpfe_device *vpfe = video_drvdata(file);1500 struct v4l2_subdev_frame_size_enum fse = {1501 .which = V4L2_SUBDEV_FORMAT_ACTIVE,1502 };1503 struct v4l2_subdev *sd = vpfe->current_subdev->sd;1504 struct vpfe_fmt *fmt;1505 int ret;1506 1507 /* check for valid format */1508 fmt = find_format_by_pix(vpfe, fsize->pixel_format);1509 if (!fmt) {1510 vpfe_dbg(3, vpfe, "Invalid pixel code: %x\n",1511 fsize->pixel_format);1512 return -EINVAL;1513 }1514 1515 memset(fsize->reserved, 0x0, sizeof(fsize->reserved));1516 1517 fse.index = fsize->index;1518 fse.pad = 0;1519 fse.code = fmt->code;1520 ret = v4l2_subdev_call(sd, pad, enum_frame_size, NULL, &fse);1521 if (ret)1522 return ret;1523 1524 vpfe_dbg(1, vpfe, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",1525 __func__, fse.index, fse.code, fse.min_width, fse.max_width,1526 fse.min_height, fse.max_height);1527 1528 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;1529 fsize->discrete.width = fse.max_width;1530 fsize->discrete.height = fse.max_height;1531 1532 vpfe_dbg(1, vpfe, "%s: index: %d pixformat: %s size: %dx%d\n",1533 __func__, fsize->index, print_fourcc(fsize->pixel_format),1534 fsize->discrete.width, fsize->discrete.height);1535 1536 return 0;1537}1538 1539/*1540 * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a1541 * given app input index1542 */1543static int1544vpfe_get_subdev_input_index(struct vpfe_device *vpfe,1545 int *subdev_index,1546 int *subdev_input_index,1547 int app_input_index)1548{1549 int i, j = 0;1550 1551 for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {1552 if (app_input_index < (j + 1)) {1553 *subdev_index = i;1554 *subdev_input_index = app_input_index - j;1555 return 0;1556 }1557 j++;1558 }1559 return -EINVAL;1560}1561 1562/*1563 * vpfe_get_app_input - Get app input index for a given subdev input index1564 * driver stores the input index of the current sub device and translate it1565 * when application request the current input1566 */1567static int vpfe_get_app_input_index(struct vpfe_device *vpfe,1568 int *app_input_index)1569{1570 struct vpfe_config *cfg = vpfe->cfg;1571 struct vpfe_subdev_info *sdinfo;1572 struct i2c_client *client;1573 struct i2c_client *curr_client;1574 int i, j = 0;1575 1576 curr_client = v4l2_get_subdevdata(vpfe->current_subdev->sd);1577 for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {1578 sdinfo = &cfg->sub_devs[i];1579 client = v4l2_get_subdevdata(sdinfo->sd);1580 if (client->addr == curr_client->addr &&1581 client->adapter->nr == curr_client->adapter->nr) {1582 if (vpfe->current_input >= 1)1583 return -1;1584 *app_input_index = j + vpfe->current_input;1585 return 0;1586 }1587 j++;1588 }1589 return -EINVAL;1590}1591 1592static int vpfe_enum_input(struct file *file, void *priv,1593 struct v4l2_input *inp)1594{1595 struct vpfe_device *vpfe = video_drvdata(file);1596 struct vpfe_subdev_info *sdinfo;1597 int subdev, index;1598 1599 if (vpfe_get_subdev_input_index(vpfe, &subdev, &index,1600 inp->index) < 0) {1601 vpfe_dbg(1, vpfe,1602 "input information not found for the subdev\n");1603 return -EINVAL;1604 }1605 sdinfo = &vpfe->cfg->sub_devs[subdev];1606 *inp = sdinfo->inputs[index];1607 1608 return 0;1609}1610 1611static int vpfe_g_input(struct file *file, void *priv, unsigned int *index)1612{1613 struct vpfe_device *vpfe = video_drvdata(file);1614 1615 return vpfe_get_app_input_index(vpfe, index);1616}1617 1618/* Assumes caller is holding vpfe_dev->lock */1619static int vpfe_set_input(struct vpfe_device *vpfe, unsigned int index)1620{1621 int subdev_index = 0, inp_index = 0;1622 struct vpfe_subdev_info *sdinfo;1623 struct vpfe_route *route;1624 u32 input, output;1625 int ret;1626 1627 /* If streaming is started, return error */1628 if (vb2_is_busy(&vpfe->buffer_queue)) {1629 vpfe_err(vpfe, "%s device busy\n", __func__);1630 return -EBUSY;1631 }1632 ret = vpfe_get_subdev_input_index(vpfe,1633 &subdev_index,1634 &inp_index,1635 index);1636 if (ret < 0) {1637 vpfe_err(vpfe, "invalid input index: %d\n", index);1638 goto get_out;1639 }1640 1641 sdinfo = &vpfe->cfg->sub_devs[subdev_index];1642 sdinfo->sd = vpfe->sd[subdev_index];1643 route = &sdinfo->routes[inp_index];1644 if (route && sdinfo->can_route) {1645 input = route->input;1646 output = route->output;1647 if (sdinfo->sd) {1648 ret = v4l2_subdev_call(sdinfo->sd, video,1649 s_routing, input, output, 0);1650 if (ret) {1651 vpfe_err(vpfe, "s_routing failed\n");1652 ret = -EINVAL;1653 goto get_out;1654 }1655 }1656 1657 }1658 1659 vpfe->current_subdev = sdinfo;1660 if (sdinfo->sd)1661 vpfe->v4l2_dev.ctrl_handler = sdinfo->sd->ctrl_handler;1662 vpfe->current_input = index;1663 vpfe->std_index = 0;1664 1665 /* set the bus/interface parameter for the sub device in ccdc */1666 ret = vpfe_ccdc_set_hw_if_params(&vpfe->ccdc, &sdinfo->vpfe_param);1667 if (ret)1668 return ret;1669 1670 /* set the default image parameters in the device */1671 return vpfe_config_image_format(vpfe,1672 vpfe_standards[vpfe->std_index].std_id);1673 1674get_out:1675 return ret;1676}1677 1678static int vpfe_s_input(struct file *file, void *priv, unsigned int index)1679{1680 struct vpfe_device *vpfe = video_drvdata(file);1681 1682 return vpfe_set_input(vpfe, index);1683}1684 1685static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id)1686{1687 struct vpfe_device *vpfe = video_drvdata(file);1688 struct vpfe_subdev_info *sdinfo;1689 1690 sdinfo = vpfe->current_subdev;1691 if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD))1692 return -ENODATA;1693 1694 /* Call querystd function of decoder device */1695 return v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,1696 video, querystd, std_id);1697}1698 1699static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id)1700{1701 struct vpfe_device *vpfe = video_drvdata(file);1702 struct vpfe_subdev_info *sdinfo;1703 int ret;1704 1705 sdinfo = vpfe->current_subdev;1706 if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD))1707 return -ENODATA;1708 1709 /* if trying to set the same std then nothing to do */1710 if (vpfe_standards[vpfe->std_index].std_id == std_id)1711 return 0;1712 1713 /* If streaming is started, return error */1714 if (vb2_is_busy(&vpfe->buffer_queue)) {1715 vpfe_err(vpfe, "%s device busy\n", __func__);1716 ret = -EBUSY;1717 return ret;1718 }1719 1720 ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,1721 video, s_std, std_id);1722 if (ret < 0) {1723 vpfe_err(vpfe, "Failed to set standard\n");1724 return ret;1725 }1726 ret = vpfe_config_image_format(vpfe, std_id);1727 1728 return ret;1729}1730 1731static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id)1732{1733 struct vpfe_device *vpfe = video_drvdata(file);1734 struct vpfe_subdev_info *sdinfo;1735 1736 sdinfo = vpfe->current_subdev;1737 if (sdinfo->inputs[0].capabilities != V4L2_IN_CAP_STD)1738 return -ENODATA;1739 1740 *std_id = vpfe_standards[vpfe->std_index].std_id;1741 1742 return 0;1743}1744 1745/*1746 * vpfe_calculate_offsets : This function calculates buffers offset1747 * for top and bottom field1748 */1749static void vpfe_calculate_offsets(struct vpfe_device *vpfe)1750{1751 struct v4l2_rect image_win;1752 1753 vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win);1754 vpfe->field_off = image_win.height * image_win.width;1755}1756 1757/*1758 * vpfe_queue_setup - Callback function for buffer setup.1759 * @vq: vb2_queue ptr1760 * @nbuffers: ptr to number of buffers requested by application1761 * @nplanes:: contains number of distinct video planes needed to hold a frame1762 * @sizes[]: contains the size (in bytes) of each plane.1763 * @alloc_devs: ptr to allocation context1764 *1765 * This callback function is called when reqbuf() is called to adjust1766 * the buffer count and buffer size1767 */1768static int vpfe_queue_setup(struct vb2_queue *vq,1769 unsigned int *nbuffers, unsigned int *nplanes,1770 unsigned int sizes[], struct device *alloc_devs[])1771{1772 struct vpfe_device *vpfe = vb2_get_drv_priv(vq);1773 unsigned size = vpfe->fmt.fmt.pix.sizeimage;1774 unsigned int q_num_bufs = vb2_get_num_buffers(vq);1775 1776 if (q_num_bufs + *nbuffers < 3)1777 *nbuffers = 3 - q_num_bufs;1778 1779 if (*nplanes) {1780 if (sizes[0] < size)1781 return -EINVAL;1782 size = sizes[0];1783 }1784 1785 *nplanes = 1;1786 sizes[0] = size;1787 1788 vpfe_dbg(1, vpfe,1789 "nbuffers=%d, size=%u\n", *nbuffers, sizes[0]);1790 1791 /* Calculate field offset */1792 vpfe_calculate_offsets(vpfe);1793 1794 return 0;1795}1796 1797/*1798 * vpfe_buffer_prepare : callback function for buffer prepare1799 * @vb: ptr to vb2_buffer1800 *1801 * This is the callback function for buffer prepare when vb2_qbuf()1802 * function is called. The buffer is prepared and user space virtual address1803 * or user address is converted into physical address1804 */1805static int vpfe_buffer_prepare(struct vb2_buffer *vb)1806{1807 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);1808 struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue);1809 1810 vb2_set_plane_payload(vb, 0, vpfe->fmt.fmt.pix.sizeimage);1811 1812 if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))1813 return -EINVAL;1814 1815 vbuf->field = vpfe->fmt.fmt.pix.field;1816 1817 return 0;1818}1819 1820/*1821 * vpfe_buffer_queue : Callback function to add buffer to DMA queue1822 * @vb: ptr to vb2_buffer1823 */1824static void vpfe_buffer_queue(struct vb2_buffer *vb)1825{1826 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);1827 struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue);1828 struct vpfe_cap_buffer *buf = to_vpfe_buffer(vbuf);1829 unsigned long flags = 0;1830 1831 /* add the buffer to the DMA queue */1832 spin_lock_irqsave(&vpfe->dma_queue_lock, flags);1833 list_add_tail(&buf->list, &vpfe->dma_queue);1834 spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);1835}1836 1837static void vpfe_return_all_buffers(struct vpfe_device *vpfe,1838 enum vb2_buffer_state state)1839{1840 struct vpfe_cap_buffer *buf, *node;1841 unsigned long flags;1842 1843 spin_lock_irqsave(&vpfe->dma_queue_lock, flags);1844 list_for_each_entry_safe(buf, node, &vpfe->dma_queue, list) {1845 vb2_buffer_done(&buf->vb.vb2_buf, state);1846 list_del(&buf->list);1847 }1848 1849 if (vpfe->cur_frm)1850 vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, state);1851 1852 if (vpfe->next_frm && vpfe->next_frm != vpfe->cur_frm)1853 vb2_buffer_done(&vpfe->next_frm->vb.vb2_buf, state);1854 1855 vpfe->cur_frm = NULL;1856 vpfe->next_frm = NULL;1857 spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);1858}1859 1860/*1861 * vpfe_start_streaming : Starts the DMA engine for streaming1862 * @vb: ptr to vb2_buffer1863 * @count: number of buffers1864 */1865static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count)1866{1867 struct vpfe_device *vpfe = vb2_get_drv_priv(vq);1868 struct vpfe_subdev_info *sdinfo;1869 unsigned long flags;1870 unsigned long addr;1871 int ret;1872 1873 spin_lock_irqsave(&vpfe->dma_queue_lock, flags);1874 1875 vpfe->field = 0;1876 vpfe->sequence = 0;1877 1878 sdinfo = vpfe->current_subdev;1879 1880 vpfe_attach_irq(vpfe);1881 1882 vpfe->stopping = false;1883 init_completion(&vpfe->capture_stop);1884 1885 if (vpfe->ccdc.ccdc_cfg.if_type == VPFE_RAW_BAYER)1886 vpfe_ccdc_config_raw(&vpfe->ccdc);1887 else1888 vpfe_ccdc_config_ycbcr(&vpfe->ccdc);1889 1890 /* Get the next frame from the buffer queue */1891 vpfe->next_frm = list_entry(vpfe->dma_queue.next,1892 struct vpfe_cap_buffer, list);1893 vpfe->cur_frm = vpfe->next_frm;1894 /* Remove buffer from the buffer queue */1895 list_del(&vpfe->cur_frm->list);1896 spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);1897 1898 addr = vb2_dma_contig_plane_dma_addr(&vpfe->cur_frm->vb.vb2_buf, 0);1899 1900 vpfe_set_sdr_addr(&vpfe->ccdc, (unsigned long)(addr));1901 1902 vpfe_pcr_enable(&vpfe->ccdc, 1);1903 1904 ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 1);1905 if (ret < 0) {1906 vpfe_err(vpfe, "Error in attaching interrupt handle\n");1907 goto err;1908 }1909 1910 return 0;1911 1912err:1913 vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_QUEUED);1914 vpfe_pcr_enable(&vpfe->ccdc, 0);1915 return ret;1916}1917 1918/*1919 * vpfe_stop_streaming : Stop the DMA engine1920 * @vq: ptr to vb2_queue1921 *1922 * This callback stops the DMA engine and any remaining buffers1923 * in the DMA queue are released.1924 */1925static void vpfe_stop_streaming(struct vb2_queue *vq)1926{1927 struct vpfe_device *vpfe = vb2_get_drv_priv(vq);1928 struct vpfe_subdev_info *sdinfo;1929 int ret;1930 1931 vpfe_pcr_enable(&vpfe->ccdc, 0);1932 1933 /* Wait for the last frame to be captured */1934 vpfe->stopping = true;1935 wait_for_completion_timeout(&vpfe->capture_stop,1936 msecs_to_jiffies(250));1937 1938 vpfe_detach_irq(vpfe);1939 1940 sdinfo = vpfe->current_subdev;1941 ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 0);1942 if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)1943 vpfe_dbg(1, vpfe, "stream off failed in subdev\n");1944 1945 /* release all active buffers */1946 vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_ERROR);1947}1948 1949static int vpfe_g_pixelaspect(struct file *file, void *priv,1950 int type, struct v4l2_fract *f)1951{1952 struct vpfe_device *vpfe = video_drvdata(file);1953 1954 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||1955 vpfe->std_index >= ARRAY_SIZE(vpfe_standards))1956 return -EINVAL;1957 1958 *f = vpfe_standards[vpfe->std_index].pixelaspect;1959 1960 return 0;1961}1962 1963static int1964vpfe_g_selection(struct file *file, void *fh, struct v4l2_selection *s)1965{1966 struct vpfe_device *vpfe = video_drvdata(file);1967 1968 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||1969 vpfe->std_index >= ARRAY_SIZE(vpfe_standards))1970 return -EINVAL;1971 1972 switch (s->target) {1973 case V4L2_SEL_TGT_CROP_BOUNDS:1974 case V4L2_SEL_TGT_CROP_DEFAULT:1975 s->r.left = 0;1976 s->r.top = 0;1977 s->r.width = vpfe_standards[vpfe->std_index].width;1978 s->r.height = vpfe_standards[vpfe->std_index].height;1979 break;1980 1981 case V4L2_SEL_TGT_CROP:1982 s->r = vpfe->crop;1983 break;1984 1985 default:1986 return -EINVAL;1987 }1988 1989 return 0;1990}1991 1992static int1993vpfe_s_selection(struct file *file, void *fh, struct v4l2_selection *s)1994{1995 struct vpfe_device *vpfe = video_drvdata(file);1996 struct v4l2_rect cr = vpfe->crop;1997 struct v4l2_rect r = s->r;1998 u32 bpp;1999 2000 /* If streaming is started, return error */2001 if (vb2_is_busy(&vpfe->buffer_queue)) {2002 vpfe_err(vpfe, "%s device busy\n", __func__);2003 return -EBUSY;2004 }2005 2006 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||2007 s->target != V4L2_SEL_TGT_CROP)2008 return -EINVAL;2009 2010 v4l_bound_align_image(&r.width, 0, cr.width, 0,2011 &r.height, 0, cr.height, 0, 0);2012 2013 r.left = clamp_t(unsigned int, r.left, 0, cr.width - r.width);2014 r.top = clamp_t(unsigned int, r.top, 0, cr.height - r.height);2015 2016 if (s->flags & V4L2_SEL_FLAG_LE && !v4l2_rect_enclosed(&r, &s->r))2017 return -ERANGE;2018 2019 if (s->flags & V4L2_SEL_FLAG_GE && !v4l2_rect_enclosed(&s->r, &r))2020 return -ERANGE;2021 2022 s->r = vpfe->crop = r;2023 2024 bpp = __get_bytesperpixel(vpfe, vpfe->current_vpfe_fmt);2025 vpfe_ccdc_set_image_window(&vpfe->ccdc, &r, bpp);2026 vpfe->fmt.fmt.pix.width = r.width;2027 vpfe->fmt.fmt.pix.height = r.height;2028 vpfe->fmt.fmt.pix.bytesperline =2029 vpfe_ccdc_get_line_length(&vpfe->ccdc);2030 vpfe->fmt.fmt.pix.sizeimage = vpfe->fmt.fmt.pix.bytesperline *2031 vpfe->fmt.fmt.pix.height;2032 2033 vpfe_dbg(1, vpfe, "cropped (%d,%d)/%dx%d of %dx%d\n",2034 r.left, r.top, r.width, r.height, cr.width, cr.height);2035 2036 return 0;2037}2038 2039static long vpfe_ioctl_default(struct file *file, void *priv,2040 bool valid_prio, unsigned int cmd, void *param)2041{2042 struct vpfe_device *vpfe = video_drvdata(file);2043 int ret;2044 2045 if (!valid_prio) {2046 vpfe_err(vpfe, "%s device busy\n", __func__);2047 return -EBUSY;2048 }2049 2050 /* If streaming is started, return error */2051 if (vb2_is_busy(&vpfe->buffer_queue)) {2052 vpfe_err(vpfe, "%s device busy\n", __func__);2053 return -EBUSY;2054 }2055 2056 switch (cmd) {2057 case VIDIOC_AM437X_CCDC_CFG:2058 ret = vpfe_ccdc_set_params(&vpfe->ccdc, (void __user *)param);2059 if (ret) {2060 vpfe_dbg(2, vpfe,2061 "Error setting parameters in CCDC\n");2062 return ret;2063 }2064 ret = vpfe_get_ccdc_image_format(vpfe,2065 &vpfe->fmt);2066 if (ret < 0) {2067 vpfe_dbg(2, vpfe,2068 "Invalid image format at CCDC\n");2069 return ret;2070 }2071 break;2072 2073 default:2074 ret = -ENOTTY;2075 break;2076 }2077 2078 return ret;2079}2080 2081static const struct vb2_ops vpfe_video_qops = {2082 .wait_prepare = vb2_ops_wait_prepare,2083 .wait_finish = vb2_ops_wait_finish,2084 .queue_setup = vpfe_queue_setup,2085 .buf_prepare = vpfe_buffer_prepare,2086 .buf_queue = vpfe_buffer_queue,2087 .start_streaming = vpfe_start_streaming,2088 .stop_streaming = vpfe_stop_streaming,2089};2090 2091/* vpfe capture driver file operations */2092static const struct v4l2_file_operations vpfe_fops = {2093 .owner = THIS_MODULE,2094 .open = vpfe_open,2095 .release = vpfe_release,2096 .read = vb2_fop_read,2097 .poll = vb2_fop_poll,2098 .unlocked_ioctl = video_ioctl2,2099 .mmap = vb2_fop_mmap,2100};2101 2102/* vpfe capture ioctl operations */2103static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {2104 .vidioc_querycap = vpfe_querycap,2105 .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt,2106 .vidioc_g_fmt_vid_cap = vpfe_g_fmt,2107 .vidioc_s_fmt_vid_cap = vpfe_s_fmt,2108 .vidioc_try_fmt_vid_cap = vpfe_try_fmt,2109 2110 .vidioc_enum_framesizes = vpfe_enum_size,2111 2112 .vidioc_enum_input = vpfe_enum_input,2113 .vidioc_g_input = vpfe_g_input,2114 .vidioc_s_input = vpfe_s_input,2115 2116 .vidioc_querystd = vpfe_querystd,2117 .vidioc_s_std = vpfe_s_std,2118 .vidioc_g_std = vpfe_g_std,2119 2120 .vidioc_reqbufs = vb2_ioctl_reqbufs,2121 .vidioc_create_bufs = vb2_ioctl_create_bufs,2122 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,2123 .vidioc_querybuf = vb2_ioctl_querybuf,2124 .vidioc_qbuf = vb2_ioctl_qbuf,2125 .vidioc_dqbuf = vb2_ioctl_dqbuf,2126 .vidioc_expbuf = vb2_ioctl_expbuf,2127 .vidioc_streamon = vb2_ioctl_streamon,2128 .vidioc_streamoff = vb2_ioctl_streamoff,2129 2130 .vidioc_log_status = v4l2_ctrl_log_status,2131 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,2132 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,2133 2134 .vidioc_g_pixelaspect = vpfe_g_pixelaspect,2135 .vidioc_g_selection = vpfe_g_selection,2136 .vidioc_s_selection = vpfe_s_selection,2137 2138 .vidioc_default = vpfe_ioctl_default,2139};2140 2141static int2142vpfe_async_bound(struct v4l2_async_notifier *notifier,2143 struct v4l2_subdev *subdev,2144 struct v4l2_async_connection *asd)2145{2146 struct vpfe_device *vpfe = container_of(notifier->v4l2_dev,2147 struct vpfe_device, v4l2_dev);2148 struct vpfe_subdev_info *sdinfo;2149 struct vpfe_fmt *fmt;2150 int ret = 0;2151 bool found = false;2152 int i, j, k;2153 2154 for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {2155 if (vpfe->cfg->asd[i]->match.fwnode ==2156 asd[i].match.fwnode) {2157 sdinfo = &vpfe->cfg->sub_devs[i];2158 vpfe->sd[i] = subdev;2159 vpfe->sd[i]->grp_id = sdinfo->grp_id;2160 found = true;2161 break;2162 }2163 }2164 2165 if (!found) {2166 vpfe_info(vpfe, "sub device (%s) not matched\n", subdev->name);2167 return -EINVAL;2168 }2169 2170 vpfe->video_dev.tvnorms |= sdinfo->inputs[0].std;2171 2172 vpfe->num_active_fmt = 0;2173 for (j = 0, i = 0; (ret != -EINVAL); ++j) {2174 struct v4l2_subdev_mbus_code_enum mbus_code = {2175 .index = j,2176 .which = V4L2_SUBDEV_FORMAT_ACTIVE,2177 };2178 2179 ret = v4l2_subdev_call(subdev, pad, enum_mbus_code,2180 NULL, &mbus_code);2181 if (ret)2182 continue;2183 2184 vpfe_dbg(3, vpfe,2185 "subdev %s: code: %04x idx: %d\n",2186 subdev->name, mbus_code.code, j);2187 2188 for (k = 0; k < ARRAY_SIZE(formats); k++) {2189 fmt = &formats[k];2190 if (mbus_code.code != fmt->code)2191 continue;2192 vpfe->active_fmt[i] = fmt;2193 vpfe_dbg(3, vpfe,2194 "matched fourcc: %s code: %04x idx: %d\n",2195 print_fourcc(fmt->fourcc), mbus_code.code, i);2196 vpfe->num_active_fmt = ++i;2197 }2198 }2199 2200 if (!i) {2201 vpfe_err(vpfe, "No suitable format reported by subdev %s\n",2202 subdev->name);2203 return -EINVAL;2204 }2205 return 0;2206}2207 2208static int vpfe_probe_complete(struct vpfe_device *vpfe)2209{2210 struct video_device *vdev;2211 struct vb2_queue *q;2212 int err;2213 2214 spin_lock_init(&vpfe->dma_queue_lock);2215 mutex_init(&vpfe->lock);2216 2217 vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;2218 2219 /* set first sub device as current one */2220 vpfe->current_subdev = &vpfe->cfg->sub_devs[0];2221 vpfe->v4l2_dev.ctrl_handler = vpfe->sd[0]->ctrl_handler;2222 2223 err = vpfe_set_input(vpfe, 0);2224 if (err)2225 goto probe_out;2226 2227 /* Initialize videobuf2 queue as per the buffer type */2228 q = &vpfe->buffer_queue;2229 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;2230 q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;2231 q->drv_priv = vpfe;2232 q->ops = &vpfe_video_qops;2233 q->mem_ops = &vb2_dma_contig_memops;2234 q->buf_struct_size = sizeof(struct vpfe_cap_buffer);2235 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;2236 q->lock = &vpfe->lock;2237 q->min_queued_buffers = 1;2238 q->dev = vpfe->pdev;2239 2240 err = vb2_queue_init(q);2241 if (err) {2242 vpfe_err(vpfe, "vb2_queue_init() failed\n");2243 goto probe_out;2244 }2245 2246 INIT_LIST_HEAD(&vpfe->dma_queue);2247 2248 vdev = &vpfe->video_dev;2249 strscpy(vdev->name, VPFE_MODULE_NAME, sizeof(vdev->name));2250 vdev->release = video_device_release_empty;2251 vdev->fops = &vpfe_fops;2252 vdev->ioctl_ops = &vpfe_ioctl_ops;2253 vdev->v4l2_dev = &vpfe->v4l2_dev;2254 vdev->vfl_dir = VFL_DIR_RX;2255 vdev->queue = q;2256 vdev->lock = &vpfe->lock;2257 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |2258 V4L2_CAP_READWRITE;2259 video_set_drvdata(vdev, vpfe);2260 err = video_register_device(&vpfe->video_dev, VFL_TYPE_VIDEO, -1);2261 if (err) {2262 vpfe_err(vpfe,2263 "Unable to register video device.\n");2264 goto probe_out;2265 }2266 2267 return 0;2268 2269probe_out:2270 v4l2_device_unregister(&vpfe->v4l2_dev);2271 return err;2272}2273 2274static int vpfe_async_complete(struct v4l2_async_notifier *notifier)2275{2276 struct vpfe_device *vpfe = container_of(notifier->v4l2_dev,2277 struct vpfe_device, v4l2_dev);2278 2279 return vpfe_probe_complete(vpfe);2280}2281 2282static const struct v4l2_async_notifier_operations vpfe_async_ops = {2283 .bound = vpfe_async_bound,2284 .complete = vpfe_async_complete,2285};2286 2287static struct vpfe_config *2288vpfe_get_pdata(struct vpfe_device *vpfe)2289{2290 struct device_node *endpoint;2291 struct device *dev = vpfe->pdev;2292 struct vpfe_subdev_info *sdinfo;2293 struct vpfe_config *pdata;2294 unsigned int flags;2295 unsigned int i;2296 int err;2297 2298 dev_dbg(dev, "vpfe_get_pdata\n");2299 2300 v4l2_async_nf_init(&vpfe->notifier, &vpfe->v4l2_dev);2301 2302 if (!IS_ENABLED(CONFIG_OF) || !dev->of_node)2303 return dev->platform_data;2304 2305 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);2306 if (!pdata)2307 return NULL;2308 2309 i = 0;2310 for_each_endpoint_of_node(dev->of_node, endpoint) {2311 struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };2312 struct device_node *rem;2313 2314 sdinfo = &pdata->sub_devs[i];2315 sdinfo->grp_id = 0;2316 2317 /* we only support camera */2318 sdinfo->inputs[0].index = i;2319 strscpy(sdinfo->inputs[0].name, "Camera",2320 sizeof(sdinfo->inputs[0].name));2321 sdinfo->inputs[0].type = V4L2_INPUT_TYPE_CAMERA;2322 sdinfo->inputs[0].std = V4L2_STD_ALL;2323 sdinfo->inputs[0].capabilities = V4L2_IN_CAP_STD;2324 2325 sdinfo->can_route = 0;2326 sdinfo->routes = NULL;2327 2328 of_property_read_u32(endpoint, "ti,am437x-vpfe-interface",2329 &sdinfo->vpfe_param.if_type);2330 if (sdinfo->vpfe_param.if_type < 0 ||2331 sdinfo->vpfe_param.if_type > 4) {2332 sdinfo->vpfe_param.if_type = VPFE_RAW_BAYER;2333 }2334 2335 err = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint),2336 &bus_cfg);2337 if (err) {2338 dev_err(dev, "Could not parse the endpoint\n");2339 goto cleanup;2340 }2341 2342 sdinfo->vpfe_param.bus_width = bus_cfg.bus.parallel.bus_width;2343 2344 if (sdinfo->vpfe_param.bus_width < 8 ||2345 sdinfo->vpfe_param.bus_width > 16) {2346 dev_err(dev, "Invalid bus width.\n");2347 goto cleanup;2348 }2349 2350 flags = bus_cfg.bus.parallel.flags;2351 2352 if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)2353 sdinfo->vpfe_param.hdpol = 1;2354 2355 if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)2356 sdinfo->vpfe_param.vdpol = 1;2357 2358 rem = of_graph_get_remote_port_parent(endpoint);2359 if (!rem) {2360 dev_err(dev, "Remote device at %pOF not found\n",2361 endpoint);2362 goto cleanup;2363 }2364 2365 pdata->asd[i] = v4l2_async_nf_add_fwnode(&vpfe->notifier,2366 of_fwnode_handle(rem),2367 struct v4l2_async_connection);2368 of_node_put(rem);2369 if (IS_ERR(pdata->asd[i]))2370 goto cleanup;2371 2372 i++;2373 }2374 2375 return pdata;2376 2377cleanup:2378 v4l2_async_nf_cleanup(&vpfe->notifier);2379 of_node_put(endpoint);2380 return NULL;2381}2382 2383/*2384 * vpfe_probe : This function creates device entries by register2385 * itself to the V4L2 driver and initializes fields of each2386 * device objects2387 */2388static int vpfe_probe(struct platform_device *pdev)2389{2390 struct vpfe_config *vpfe_cfg;2391 struct vpfe_device *vpfe;2392 struct vpfe_ccdc *ccdc;2393 int ret;2394 2395 vpfe = devm_kzalloc(&pdev->dev, sizeof(*vpfe), GFP_KERNEL);2396 if (!vpfe)2397 return -ENOMEM;2398 2399 vpfe->pdev = &pdev->dev;2400 2401 ret = v4l2_device_register(&pdev->dev, &vpfe->v4l2_dev);2402 if (ret) {2403 vpfe_err(vpfe, "Unable to register v4l2 device.\n");2404 return ret;2405 }2406 2407 vpfe_cfg = vpfe_get_pdata(vpfe);2408 if (!vpfe_cfg) {2409 dev_err(&pdev->dev, "No platform data\n");2410 ret = -EINVAL;2411 goto probe_out_cleanup;2412 }2413 2414 vpfe->cfg = vpfe_cfg;2415 ccdc = &vpfe->ccdc;2416 2417 ccdc->ccdc_cfg.base_addr = devm_platform_ioremap_resource(pdev, 0);2418 if (IS_ERR(ccdc->ccdc_cfg.base_addr)) {2419 ret = PTR_ERR(ccdc->ccdc_cfg.base_addr);2420 goto probe_out_cleanup;2421 }2422 2423 ret = platform_get_irq(pdev, 0);2424 if (ret < 0)2425 goto probe_out_cleanup;2426 vpfe->irq = ret;2427 2428 ret = devm_request_irq(vpfe->pdev, vpfe->irq, vpfe_isr, 0,2429 "vpfe_capture0", vpfe);2430 if (ret) {2431 dev_err(&pdev->dev, "Unable to request interrupt\n");2432 ret = -EINVAL;2433 goto probe_out_cleanup;2434 }2435 2436 /* set the driver data in platform device */2437 platform_set_drvdata(pdev, vpfe);2438 /* Enabling module functional clock */2439 pm_runtime_enable(&pdev->dev);2440 2441 /* for now just enable it here instead of waiting for the open */2442 ret = pm_runtime_resume_and_get(&pdev->dev);2443 if (ret < 0) {2444 vpfe_err(vpfe, "Unable to resume device.\n");2445 goto probe_out_cleanup;2446 }2447 2448 vpfe_ccdc_config_defaults(ccdc);2449 2450 pm_runtime_put_sync(&pdev->dev);2451 2452 vpfe->sd = devm_kcalloc(&pdev->dev,2453 ARRAY_SIZE(vpfe->cfg->asd),2454 sizeof(struct v4l2_subdev *),2455 GFP_KERNEL);2456 if (!vpfe->sd) {2457 ret = -ENOMEM;2458 goto probe_out_cleanup;2459 }2460 2461 vpfe->notifier.ops = &vpfe_async_ops;2462 ret = v4l2_async_nf_register(&vpfe->notifier);2463 if (ret) {2464 vpfe_err(vpfe, "Error registering async notifier\n");2465 ret = -EINVAL;2466 goto probe_out_cleanup;2467 }2468 2469 return 0;2470 2471probe_out_cleanup:2472 v4l2_async_nf_cleanup(&vpfe->notifier);2473 v4l2_device_unregister(&vpfe->v4l2_dev);2474 return ret;2475}2476 2477/*2478 * vpfe_remove : It un-register device from V4L2 driver2479 */2480static void vpfe_remove(struct platform_device *pdev)2481{2482 struct vpfe_device *vpfe = platform_get_drvdata(pdev);2483 2484 pm_runtime_disable(&pdev->dev);2485 2486 v4l2_async_nf_unregister(&vpfe->notifier);2487 v4l2_async_nf_cleanup(&vpfe->notifier);2488 video_unregister_device(&vpfe->video_dev);2489 v4l2_device_unregister(&vpfe->v4l2_dev);2490}2491 2492#ifdef CONFIG_PM_SLEEP2493 2494static void vpfe_save_context(struct vpfe_ccdc *ccdc)2495{2496 ccdc->ccdc_ctx[VPFE_PCR >> 2] = vpfe_reg_read(ccdc, VPFE_PCR);2497 ccdc->ccdc_ctx[VPFE_SYNMODE >> 2] = vpfe_reg_read(ccdc, VPFE_SYNMODE);2498 ccdc->ccdc_ctx[VPFE_SDOFST >> 2] = vpfe_reg_read(ccdc, VPFE_SDOFST);2499 ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2] = vpfe_reg_read(ccdc, VPFE_SDR_ADDR);2500 ccdc->ccdc_ctx[VPFE_CLAMP >> 2] = vpfe_reg_read(ccdc, VPFE_CLAMP);2501 ccdc->ccdc_ctx[VPFE_DCSUB >> 2] = vpfe_reg_read(ccdc, VPFE_DCSUB);2502 ccdc->ccdc_ctx[VPFE_COLPTN >> 2] = vpfe_reg_read(ccdc, VPFE_COLPTN);2503 ccdc->ccdc_ctx[VPFE_BLKCMP >> 2] = vpfe_reg_read(ccdc, VPFE_BLKCMP);2504 ccdc->ccdc_ctx[VPFE_VDINT >> 2] = vpfe_reg_read(ccdc, VPFE_VDINT);2505 ccdc->ccdc_ctx[VPFE_ALAW >> 2] = vpfe_reg_read(ccdc, VPFE_ALAW);2506 ccdc->ccdc_ctx[VPFE_REC656IF >> 2] = vpfe_reg_read(ccdc, VPFE_REC656IF);2507 ccdc->ccdc_ctx[VPFE_CCDCFG >> 2] = vpfe_reg_read(ccdc, VPFE_CCDCFG);2508 ccdc->ccdc_ctx[VPFE_CULLING >> 2] = vpfe_reg_read(ccdc, VPFE_CULLING);2509 ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2] = vpfe_reg_read(ccdc,2510 VPFE_HD_VD_WID);2511 ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2] = vpfe_reg_read(ccdc,2512 VPFE_PIX_LINES);2513 ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2] = vpfe_reg_read(ccdc,2514 VPFE_HORZ_INFO);2515 ccdc->ccdc_ctx[VPFE_VERT_START >> 2] = vpfe_reg_read(ccdc,2516 VPFE_VERT_START);2517 ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2] = vpfe_reg_read(ccdc,2518 VPFE_VERT_LINES);2519 ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2] = vpfe_reg_read(ccdc,2520 VPFE_HSIZE_OFF);2521}2522 2523static int vpfe_suspend(struct device *dev)2524{2525 struct vpfe_device *vpfe = dev_get_drvdata(dev);2526 struct vpfe_ccdc *ccdc = &vpfe->ccdc;2527 2528 /* only do full suspend if streaming has started */2529 if (vb2_start_streaming_called(&vpfe->buffer_queue)) {2530 /*2531 * ignore RPM resume errors here, as it is already too late.2532 * A check like that should happen earlier, either at2533 * open() or just before start streaming.2534 */2535 pm_runtime_get_sync(dev);2536 vpfe_config_enable(ccdc, 1);2537 2538 /* Save VPFE context */2539 vpfe_save_context(ccdc);2540 2541 /* Disable CCDC */2542 vpfe_pcr_enable(ccdc, 0);2543 vpfe_config_enable(ccdc, 0);2544 2545 /* Disable both master and slave clock */2546 pm_runtime_put_sync(dev);2547 }2548 2549 /* Select sleep pin state */2550 pinctrl_pm_select_sleep_state(dev);2551 2552 return 0;2553}2554 2555static void vpfe_restore_context(struct vpfe_ccdc *ccdc)2556{2557 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SYNMODE >> 2], VPFE_SYNMODE);2558 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CULLING >> 2], VPFE_CULLING);2559 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDOFST >> 2], VPFE_SDOFST);2560 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2], VPFE_SDR_ADDR);2561 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CLAMP >> 2], VPFE_CLAMP);2562 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_DCSUB >> 2], VPFE_DCSUB);2563 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_COLPTN >> 2], VPFE_COLPTN);2564 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_BLKCMP >> 2], VPFE_BLKCMP);2565 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VDINT >> 2], VPFE_VDINT);2566 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_ALAW >> 2], VPFE_ALAW);2567 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_REC656IF >> 2], VPFE_REC656IF);2568 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CCDCFG >> 2], VPFE_CCDCFG);2569 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PCR >> 2], VPFE_PCR);2570 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2],2571 VPFE_HD_VD_WID);2572 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2],2573 VPFE_PIX_LINES);2574 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2],2575 VPFE_HORZ_INFO);2576 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_START >> 2],2577 VPFE_VERT_START);2578 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2],2579 VPFE_VERT_LINES);2580 vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2],2581 VPFE_HSIZE_OFF);2582}2583 2584static int vpfe_resume(struct device *dev)2585{2586 struct vpfe_device *vpfe = dev_get_drvdata(dev);2587 struct vpfe_ccdc *ccdc = &vpfe->ccdc;2588 2589 /* only do full resume if streaming has started */2590 if (vb2_start_streaming_called(&vpfe->buffer_queue)) {2591 /* Enable both master and slave clock */2592 pm_runtime_get_sync(dev);2593 vpfe_config_enable(ccdc, 1);2594 2595 /* Restore VPFE context */2596 vpfe_restore_context(ccdc);2597 2598 vpfe_config_enable(ccdc, 0);2599 pm_runtime_put_sync(dev);2600 }2601 2602 /* Select default pin state */2603 pinctrl_pm_select_default_state(dev);2604 2605 return 0;2606}2607 2608#endif2609 2610static SIMPLE_DEV_PM_OPS(vpfe_pm_ops, vpfe_suspend, vpfe_resume);2611 2612static const struct of_device_id vpfe_of_match[] = {2613 { .compatible = "ti,am437x-vpfe", },2614 { /* sentinel */ },2615};2616MODULE_DEVICE_TABLE(of, vpfe_of_match);2617 2618static struct platform_driver vpfe_driver = {2619 .probe = vpfe_probe,2620 .remove_new = vpfe_remove,2621 .driver = {2622 .name = VPFE_MODULE_NAME,2623 .pm = &vpfe_pm_ops,2624 .of_match_table = vpfe_of_match,2625 },2626};2627 2628module_platform_driver(vpfe_driver);2629 2630MODULE_AUTHOR("Texas Instruments");2631MODULE_DESCRIPTION("TI AM437x VPFE driver");2632MODULE_LICENSE("GPL");2633MODULE_VERSION(VPFE_VERSION);2634