LXR linux/drivers/media/platform/davinci/dm355

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Copyright (C) 2005-2009 Texas Instruments Inc
   4 *
   5 * CCDC hardware module for DM355
   6 * ------------------------------
   7 *
   8 * This module is for configuring DM355 CCD controller of VPFE to capture
   9 * Raw yuv or Bayer RGB data from a decoder. CCDC has several modules
  10 * such as Defect Pixel Correction, Color Space Conversion etc to
  11 * pre-process the Bayer RGB data, before writing it to SDRAM.
  12 *
  13 * TODO: 1) Raw bayer parameter settings and bayer capture
  14 *       2) Split module parameter structure to module specific ioctl structs
  15 *       3) add support for lense shading correction
  16 *       4) investigate if enum used for user space type definition
  17 *          to be replaced by #defines or integer
  18 */
  19#include <linux/platform_device.h>
  20#include <linux/uaccess.h>
  21#include <linux/videodev2.h>
  22#include <linux/err.h>
  23#include <linux/module.h>
  24
  25#include <media/davinci/dm355_ccdc.h>
  26#include <media/davinci/vpss.h>
  27
  28#include "dm355_ccdc_regs.h"
  29#include "ccdc_hw_device.h"
  30
  31MODULE_LICENSE("GPL");
  32MODULE_DESCRIPTION("CCDC Driver for DM355");
  33MODULE_AUTHOR("Texas Instruments");
  34
  35static struct ccdc_oper_config {
  36        struct device *dev;
  37        /* CCDC interface type */
  38        enum vpfe_hw_if_type if_type;
  39        /* Raw Bayer configuration */
  40        struct ccdc_params_raw bayer;
  41        /* YCbCr configuration */
  42        struct ccdc_params_ycbcr ycbcr;
  43        /* ccdc base address */
  44        void __iomem *base_addr;
  45} ccdc_cfg = {
  46        /* Raw configurations */
  47        .bayer = {
  48                .pix_fmt = CCDC_PIXFMT_RAW,
  49                .frm_fmt = CCDC_FRMFMT_PROGRESSIVE,
  50                .win = CCDC_WIN_VGA,
  51                .fid_pol = VPFE_PINPOL_POSITIVE,
  52                .vd_pol = VPFE_PINPOL_POSITIVE,
  53                .hd_pol = VPFE_PINPOL_POSITIVE,
  54                .gain = {
  55                        .r_ye = 256,
  56                        .gb_g = 256,
  57                        .gr_cy = 256,
  58                        .b_mg = 256
  59                },
  60                .config_params = {
  61                        .datasft = 2,
  62                        .mfilt1 = CCDC_NO_MEDIAN_FILTER1,
  63                        .mfilt2 = CCDC_NO_MEDIAN_FILTER2,
  64                        .alaw = {
  65                                .gamma_wd = 2,
  66                        },
  67                        .blk_clamp = {
  68                                .sample_pixel = 1,
  69                                .dc_sub = 25
  70                        },
  71                        .col_pat_field0 = {
  72                                .olop = CCDC_GREEN_BLUE,
  73                                .olep = CCDC_BLUE,
  74                                .elop = CCDC_RED,
  75                                .elep = CCDC_GREEN_RED
  76                        },
  77                        .col_pat_field1 = {
  78                                .olop = CCDC_GREEN_BLUE,
  79                                .olep = CCDC_BLUE,
  80                                .elop = CCDC_RED,
  81                                .elep = CCDC_GREEN_RED
  82                        },
  83                },
  84        },
  85        /* YCbCr configuration */
  86        .ycbcr = {
  87                .win = CCDC_WIN_PAL,
  88                .pix_fmt = CCDC_PIXFMT_YCBCR_8BIT,
  89                .frm_fmt = CCDC_FRMFMT_INTERLACED,
  90                .fid_pol = VPFE_PINPOL_POSITIVE,
  91                .vd_pol = VPFE_PINPOL_POSITIVE,
  92                .hd_pol = VPFE_PINPOL_POSITIVE,
  93                .bt656_enable = 1,
  94                .pix_order = CCDC_PIXORDER_CBYCRY,
  95                .buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED
  96        },
  97};
  98
  99
 100/* Raw Bayer formats */
 101static u32 ccdc_raw_bayer_pix_formats[] =
 102                {V4L2_PIX_FMT_SBGGR8, V4L2_PIX_FMT_SBGGR16};
 103
 104/* Raw YUV formats */
 105static u32 ccdc_raw_yuv_pix_formats[] =
 106                {V4L2_PIX_FMT_UYVY, V4L2_PIX_FMT_YUYV};
 107
 108/* register access routines */
 109static inline u32 regr(u32 offset)
 110{
 111        return __raw_readl(ccdc_cfg.base_addr + offset);
 112}
 113
 114static inline void regw(u32 val, u32 offset)
 115{
 116        __raw_writel(val, ccdc_cfg.base_addr + offset);
 117}
 118
 119static void ccdc_enable(int en)
 120{
 121        unsigned int temp;
 122        temp = regr(SYNCEN);
 123        temp &= (~CCDC_SYNCEN_VDHDEN_MASK);
 124        temp |= (en & CCDC_SYNCEN_VDHDEN_MASK);
 125        regw(temp, SYNCEN);
 126}
 127
 128static void ccdc_enable_output_to_sdram(int en)
 129{
 130        unsigned int temp;
 131        temp = regr(SYNCEN);
 132        temp &= (~(CCDC_SYNCEN_WEN_MASK));
 133        temp |= ((en << CCDC_SYNCEN_WEN_SHIFT) & CCDC_SYNCEN_WEN_MASK);
 134        regw(temp, SYNCEN);
 135}
 136
 137static void ccdc_config_gain_offset(void)
 138{
 139        /* configure gain */
 140        regw(ccdc_cfg.bayer.gain.r_ye, RYEGAIN);
 141        regw(ccdc_cfg.bayer.gain.gr_cy, GRCYGAIN);
 142        regw(ccdc_cfg.bayer.gain.gb_g, GBGGAIN);
 143        regw(ccdc_cfg.bayer.gain.b_mg, BMGGAIN);
 144        /* configure offset */
 145        regw(ccdc_cfg.bayer.ccdc_offset, OFFSET);
 146}
 147
 148/*
 149 * ccdc_restore_defaults()
 150 * This function restore power on defaults in the ccdc registers
 151 */
 152static int ccdc_restore_defaults(void)
 153{
 154        int i;
 155
 156        dev_dbg(ccdc_cfg.dev, "\nstarting ccdc_restore_defaults...");
 157        /* set all registers to zero */
 158        for (i = 0; i <= CCDC_REG_LAST; i += 4)
 159                regw(0, i);
 160
 161        /* now override the values with power on defaults in registers */
 162        regw(MODESET_DEFAULT, MODESET);
 163        /* no culling support */
 164        regw(CULH_DEFAULT, CULH);
 165        regw(CULV_DEFAULT, CULV);
 166        /* Set default Gain and Offset */
 167        ccdc_cfg.bayer.gain.r_ye = GAIN_DEFAULT;
 168        ccdc_cfg.bayer.gain.gb_g = GAIN_DEFAULT;
 169        ccdc_cfg.bayer.gain.gr_cy = GAIN_DEFAULT;
 170        ccdc_cfg.bayer.gain.b_mg = GAIN_DEFAULT;
 171        ccdc_config_gain_offset();
 172        regw(OUTCLIP_DEFAULT, OUTCLIP);
 173        regw(LSCCFG2_DEFAULT, LSCCFG2);
 174        /* select ccdc input */
 175        if (vpss_select_ccdc_source(VPSS_CCDCIN)) {
 176                dev_dbg(ccdc_cfg.dev, "\ncouldn't select ccdc input source");
 177                return -EFAULT;
 178        }
 179        /* select ccdc clock */
 180        if (vpss_enable_clock(VPSS_CCDC_CLOCK, 1) < 0) {
 181                dev_dbg(ccdc_cfg.dev, "\ncouldn't enable ccdc clock");
 182                return -EFAULT;
 183        }
 184        dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_restore_defaults...");
 185        return 0;
 186}
 187
 188static int ccdc_open(struct device *device)
 189{
 190        return ccdc_restore_defaults();
 191}
 192
 193static int ccdc_close(struct device *device)
 194{
 195        /* disable clock */
 196        vpss_enable_clock(VPSS_CCDC_CLOCK, 0);
 197        /* do nothing for now */
 198        return 0;
 199}
 200/*
 201 * ccdc_setwin()
 202 * This function will configure the window size to
 203 * be capture in CCDC reg.
 204 */
 205static void ccdc_setwin(struct v4l2_rect *image_win,
 206                        enum ccdc_frmfmt frm_fmt, int ppc)
 207{
 208        int horz_start, horz_nr_pixels;
 209        int vert_start, vert_nr_lines;
 210        int mid_img = 0;
 211
 212        dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_setwin...");
 213
 214        /*
 215         * ppc - per pixel count. indicates how many pixels per cell
 216         * output to SDRAM. example, for ycbcr, it is one y and one c, so 2.
 217         * raw capture this is 1
 218         */
 219        horz_start = image_win->left << (ppc - 1);
 220        horz_nr_pixels = ((image_win->width) << (ppc - 1)) - 1;
 221
 222        /* Writing the horizontal info into the registers */
 223        regw(horz_start, SPH);
 224        regw(horz_nr_pixels, NPH);
 225        vert_start = image_win->top;
 226
 227        if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
 228                vert_nr_lines = (image_win->height >> 1) - 1;
 229                vert_start >>= 1;
 230                /* Since first line doesn't have any data */
 231                vert_start += 1;
 232                /* configure VDINT0 and VDINT1 */
 233                regw(vert_start, VDINT0);
 234        } else {
 235                /* Since first line doesn't have any data */
 236                vert_start += 1;
 237                vert_nr_lines = image_win->height - 1;
 238                /* configure VDINT0 and VDINT1 */
 239                mid_img = vert_start + (image_win->height / 2);
 240                regw(vert_start, VDINT0);
 241                regw(mid_img, VDINT1);
 242        }
 243        regw(vert_start & CCDC_START_VER_ONE_MASK, SLV0);
 244        regw(vert_start & CCDC_START_VER_TWO_MASK, SLV1);
 245        regw(vert_nr_lines & CCDC_NUM_LINES_VER, NLV);
 246        dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_setwin...");
 247}
 248
 249/* This function will configure CCDC for YCbCr video capture */
 250static void ccdc_config_ycbcr(void)
 251{
 252        struct ccdc_params_ycbcr *params = &ccdc_cfg.ycbcr;
 253        u32 temp;
 254
 255        /* first set the CCDC power on defaults values in all registers */
 256        dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_config_ycbcr...");
 257        ccdc_restore_defaults();
 258
 259        /* configure pixel format & video frame format */
 260        temp = (((params->pix_fmt & CCDC_INPUT_MODE_MASK) <<
 261                CCDC_INPUT_MODE_SHIFT) |
 262                ((params->frm_fmt & CCDC_FRM_FMT_MASK) <<
 263                CCDC_FRM_FMT_SHIFT));
 264
 265        /* setup BT.656 sync mode */
 266        if (params->bt656_enable) {
 267                regw(CCDC_REC656IF_BT656_EN, REC656IF);
 268                /*
 269                 * configure the FID, VD, HD pin polarity fld,hd pol positive,
 270                 * vd negative, 8-bit pack mode
 271                 */
 272                temp |= CCDC_VD_POL_NEGATIVE;
 273        } else {                /* y/c external sync mode */
 274                temp |= (((params->fid_pol & CCDC_FID_POL_MASK) <<
 275                        CCDC_FID_POL_SHIFT) |
 276                        ((params->hd_pol & CCDC_HD_POL_MASK) <<
 277                        CCDC_HD_POL_SHIFT) |
 278                        ((params->vd_pol & CCDC_VD_POL_MASK) <<
 279                        CCDC_VD_POL_SHIFT));
 280        }
 281
 282        /* pack the data to 8-bit */
 283        temp |= CCDC_DATA_PACK_ENABLE;
 284
 285        regw(temp, MODESET);
 286
 287        /* configure video window */
 288        ccdc_setwin(&params->win, params->frm_fmt, 2);
 289
 290        /* configure the order of y cb cr in SD-RAM */
 291        temp = (params->pix_order << CCDC_Y8POS_SHIFT);
 292        temp |= CCDC_LATCH_ON_VSYNC_DISABLE | CCDC_CCDCFG_FIDMD_NO_LATCH_VSYNC;
 293        regw(temp, CCDCFG);
 294
 295        /*
 296         * configure the horizontal line offset. This is done by rounding up
 297         * width to a multiple of 16 pixels and multiply by two to account for
 298         * y:cb:cr 4:2:2 data
 299         */
 300        regw(((params->win.width * 2 + 31) >> 5), HSIZE);
 301
 302        /* configure the memory line offset */
 303        if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) {
 304                /* two fields are interleaved in memory */
 305                regw(CCDC_SDOFST_FIELD_INTERLEAVED, SDOFST);
 306        }
 307
 308        dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_config_ycbcr...\n");
 309}
 310
 311/*
 312 * ccdc_config_black_clamp()
 313 * configure parameters for Optical Black Clamp
 314 */
 315static void ccdc_config_black_clamp(struct ccdc_black_clamp *bclamp)
 316{
 317        u32 val;
 318
 319        if (!bclamp->b_clamp_enable) {
 320                /* configure DCSub */
 321                regw(bclamp->dc_sub & CCDC_BLK_DC_SUB_MASK, DCSUB);
 322                regw(0x0000, CLAMP);
 323                return;
 324        }
 325        /* Enable the Black clamping, set sample lines and pixels */
 326        val = (bclamp->start_pixel & CCDC_BLK_ST_PXL_MASK) |
 327              ((bclamp->sample_pixel & CCDC_BLK_SAMPLE_LN_MASK) <<
 328                CCDC_BLK_SAMPLE_LN_SHIFT) | CCDC_BLK_CLAMP_ENABLE;
 329        regw(val, CLAMP);
 330
 331        /* If Black clamping is enable then make dcsub 0 */
 332        val = (bclamp->sample_ln & CCDC_NUM_LINE_CALC_MASK)
 333                        << CCDC_NUM_LINE_CALC_SHIFT;
 334        regw(val, DCSUB);
 335}
 336
 337/*
 338 * ccdc_config_black_compense()
 339 * configure parameters for Black Compensation
 340 */
 341static void ccdc_config_black_compense(struct ccdc_black_compensation *bcomp)
 342{
 343        u32 val;
 344
 345        val = (bcomp->b & CCDC_BLK_COMP_MASK) |
 346                ((bcomp->gb & CCDC_BLK_COMP_MASK) <<
 347                CCDC_BLK_COMP_GB_COMP_SHIFT);
 348        regw(val, BLKCMP1);
 349
 350        val = ((bcomp->gr & CCDC_BLK_COMP_MASK) <<
 351                CCDC_BLK_COMP_GR_COMP_SHIFT) |
 352                ((bcomp->r & CCDC_BLK_COMP_MASK) <<
 353                CCDC_BLK_COMP_R_COMP_SHIFT);
 354        regw(val, BLKCMP0);
 355}
 356
 357/*
 358 * ccdc_write_dfc_entry()
 359 * write an entry in the dfc table.
 360 */
 361static int ccdc_write_dfc_entry(int index, struct ccdc_vertical_dft *dfc)
 362{
 363/* TODO This is to be re-visited and adjusted */
 364#define DFC_WRITE_WAIT_COUNT    1000
 365        u32 val, count = DFC_WRITE_WAIT_COUNT;
 366
 367        regw(dfc->dft_corr_vert[index], DFCMEM0);
 368        regw(dfc->dft_corr_horz[index], DFCMEM1);
 369        regw(dfc->dft_corr_sub1[index], DFCMEM2);
 370        regw(dfc->dft_corr_sub2[index], DFCMEM3);
 371        regw(dfc->dft_corr_sub3[index], DFCMEM4);
 372        /* set WR bit to write */
 373        val = regr(DFCMEMCTL) | CCDC_DFCMEMCTL_DFCMWR_MASK;
 374        regw(val, DFCMEMCTL);
 375
 376        /*
 377         * Assume, it is very short. If we get an error, we need to
 378         * adjust this value
 379         */
 380        while (regr(DFCMEMCTL) & CCDC_DFCMEMCTL_DFCMWR_MASK)
 381                count--;
 382        /*
 383         * TODO We expect the count to be non-zero to be successful. Adjust
 384         * the count if write requires more time
 385         */
 386
 387        if (count) {
 388                dev_err(ccdc_cfg.dev, "defect table write timeout !!!\n");
 389                return -1;
 390        }
 391        return 0;
 392}
 393
 394/*
 395 * ccdc_config_vdfc()
 396 * configure parameters for Vertical Defect Correction
 397 */
 398static int ccdc_config_vdfc(struct ccdc_vertical_dft *dfc)
 399{
 400        u32 val;
 401        int i;
 402
 403        /* Configure General Defect Correction. The table used is from IPIPE */
 404        val = dfc->gen_dft_en & CCDC_DFCCTL_GDFCEN_MASK;
 405
 406        /* Configure Vertical Defect Correction if needed */
 407        if (!dfc->ver_dft_en) {
 408                /* Enable only General Defect Correction */
 409                regw(val, DFCCTL);
 410                return 0;
 411        }
 412
 413        if (dfc->table_size > CCDC_DFT_TABLE_SIZE)
 414                return -EINVAL;
 415
 416        val |= CCDC_DFCCTL_VDFC_DISABLE;
 417        val |= (dfc->dft_corr_ctl.vdfcsl & CCDC_DFCCTL_VDFCSL_MASK) <<
 418                CCDC_DFCCTL_VDFCSL_SHIFT;
 419        val |= (dfc->dft_corr_ctl.vdfcuda & CCDC_DFCCTL_VDFCUDA_MASK) <<
 420                CCDC_DFCCTL_VDFCUDA_SHIFT;
 421        val |= (dfc->dft_corr_ctl.vdflsft & CCDC_DFCCTL_VDFLSFT_MASK) <<
 422                CCDC_DFCCTL_VDFLSFT_SHIFT;
 423        regw(val , DFCCTL);
 424
 425        /* clear address ptr to offset 0 */
 426        val = CCDC_DFCMEMCTL_DFCMARST_MASK << CCDC_DFCMEMCTL_DFCMARST_SHIFT;
 427
 428        /* write defect table entries */
 429        for (i = 0; i < dfc->table_size; i++) {
 430                /* increment address for non zero index */
 431                if (i != 0)
 432                        val = CCDC_DFCMEMCTL_INC_ADDR;
 433                regw(val, DFCMEMCTL);
 434                if (ccdc_write_dfc_entry(i, dfc) < 0)
 435                        return -EFAULT;
 436        }
 437
 438        /* update saturation level and enable dfc */
 439        regw(dfc->saturation_ctl & CCDC_VDC_DFCVSAT_MASK, DFCVSAT);
 440        val = regr(DFCCTL) | (CCDC_DFCCTL_VDFCEN_MASK <<
 441                        CCDC_DFCCTL_VDFCEN_SHIFT);
 442        regw(val, DFCCTL);
 443        return 0;
 444}
 445
 446/*
 447 * ccdc_config_csc()
 448 * configure parameters for color space conversion
 449 * Each register CSCM0-7 has two values in S8Q5 format.
 450 */
 451static void ccdc_config_csc(struct ccdc_csc *csc)
 452{
 453        u32 val1 = 0, val2;
 454        int i;
 455
 456        if (!csc->enable)
 457                return;
 458
 459        /* Enable the CSC sub-module */
 460        regw(CCDC_CSC_ENABLE, CSCCTL);
 461
 462        /* Converting the co-eff as per the format of the register */
 463        for (i = 0; i < CCDC_CSC_COEFF_TABLE_SIZE; i++) {
 464                if ((i % 2) == 0) {
 465                        /* CSCM - LSB */
 466                        val1 = (csc->coeff[i].integer &
 467                                CCDC_CSC_COEF_INTEG_MASK)
 468                                << CCDC_CSC_COEF_INTEG_SHIFT;
 469                        /*
 470                         * convert decimal part to binary. Use 2 decimal
 471                         * precision, user values range from .00 - 0.99
 472                         */
 473                        val1 |= (((csc->coeff[i].decimal &
 474                                CCDC_CSC_COEF_DECIMAL_MASK) *
 475                                CCDC_CSC_DEC_MAX) / 100);
 476                } else {
 477
 478                        /* CSCM - MSB */
 479                        val2 = (csc->coeff[i].integer &
 480                                CCDC_CSC_COEF_INTEG_MASK)
 481                                << CCDC_CSC_COEF_INTEG_SHIFT;
 482                        val2 |= (((csc->coeff[i].decimal &
 483                                 CCDC_CSC_COEF_DECIMAL_MASK) *
 484                                 CCDC_CSC_DEC_MAX) / 100);
 485                        val2 <<= CCDC_CSCM_MSB_SHIFT;
 486                        val2 |= val1;
 487                        regw(val2, (CSCM0 + ((i - 1) << 1)));
 488                }
 489        }
 490}
 491
 492/*
 493 * ccdc_config_color_patterns()
 494 * configure parameters for color patterns
 495 */
 496static void ccdc_config_color_patterns(struct ccdc_col_pat *pat0,
 497                                       struct ccdc_col_pat *pat1)
 498{
 499        u32 val;
 500
 501        val = (pat0->olop | (pat0->olep << 2) | (pat0->elop << 4) |
 502                (pat0->elep << 6) | (pat1->olop << 8) | (pat1->olep << 10) |
 503                (pat1->elop << 12) | (pat1->elep << 14));
 504        regw(val, COLPTN);
 505}
 506
 507/* This function will configure CCDC for Raw mode image capture */
 508static int ccdc_config_raw(void)
 509{
 510        struct ccdc_params_raw *params = &ccdc_cfg.bayer;
 511        struct ccdc_config_params_raw *config_params =
 512                                        &ccdc_cfg.bayer.config_params;
 513        unsigned int val;
 514
 515        dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_config_raw...");
 516
 517        /* restore power on defaults to register */
 518        ccdc_restore_defaults();
 519
 520        /* CCDCFG register:
 521         * set CCD Not to swap input since input is RAW data
 522         * set FID detection function to Latch at V-Sync
 523         * set WENLOG - ccdc valid area to AND
 524         * set TRGSEL to WENBIT
 525         * set EXTRG to DISABLE
 526         * disable latching function on VSYNC - shadowed registers
 527         */
 528        regw(CCDC_YCINSWP_RAW | CCDC_CCDCFG_FIDMD_LATCH_VSYNC |
 529             CCDC_CCDCFG_WENLOG_AND | CCDC_CCDCFG_TRGSEL_WEN |
 530             CCDC_CCDCFG_EXTRG_DISABLE | CCDC_LATCH_ON_VSYNC_DISABLE, CCDCFG);
 531
 532        /*
 533         * Set VDHD direction to input,  input type to raw input
 534         * normal data polarity, do not use external WEN
 535         */
 536        val = (CCDC_VDHDOUT_INPUT | CCDC_RAW_IP_MODE | CCDC_DATAPOL_NORMAL |
 537                CCDC_EXWEN_DISABLE);
 538
 539        /*
 540         * Configure the vertical sync polarity (MODESET.VDPOL), horizontal
 541         * sync polarity (MODESET.HDPOL), field id polarity (MODESET.FLDPOL),
 542         * frame format(progressive or interlace), & pixel format (Input mode)
 543         */
 544        val |= (((params->vd_pol & CCDC_VD_POL_MASK) << CCDC_VD_POL_SHIFT) |
 545                ((params->hd_pol & CCDC_HD_POL_MASK) << CCDC_HD_POL_SHIFT) |
 546                ((params->fid_pol & CCDC_FID_POL_MASK) << CCDC_FID_POL_SHIFT) |
 547                ((params->frm_fmt & CCDC_FRM_FMT_MASK) << CCDC_FRM_FMT_SHIFT) |
 548                ((params->pix_fmt & CCDC_PIX_FMT_MASK) << CCDC_PIX_FMT_SHIFT));
 549
 550        /* set pack for alaw compression */
 551        if ((config_params->data_sz == CCDC_DATA_8BITS) ||
 552             config_params->alaw.enable)
 553                val |= CCDC_DATA_PACK_ENABLE;
 554
 555        /* Configure for LPF */
 556        if (config_params->lpf_enable)
 557                val |= (config_params->lpf_enable & CCDC_LPF_MASK) <<
 558                        CCDC_LPF_SHIFT;
 559
 560        /* Configure the data shift */
 561        val |= (config_params->datasft & CCDC_DATASFT_MASK) <<
 562                CCDC_DATASFT_SHIFT;
 563        regw(val , MODESET);
 564        dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to MODESET...\n", val);
 565
 566        /* Configure the Median Filter threshold */
 567        regw((config_params->med_filt_thres) & CCDC_MED_FILT_THRESH, MEDFILT);
 568
 569        /* Configure GAMMAWD register. defaur 11-2, and Mosaic cfa pattern */
 570        val = CCDC_GAMMA_BITS_11_2 << CCDC_GAMMAWD_INPUT_SHIFT |
 571                CCDC_CFA_MOSAIC;
 572
 573        /* Enable and configure aLaw register if needed */
 574        if (config_params->alaw.enable) {
 575                val |= (CCDC_ALAW_ENABLE |
 576                        ((config_params->alaw.gamma_wd &
 577                        CCDC_ALAW_GAMMA_WD_MASK) <<
 578                        CCDC_GAMMAWD_INPUT_SHIFT));
 579        }
 580
 581        /* Configure Median filter1 & filter2 */
 582        val |= ((config_params->mfilt1 << CCDC_MFILT1_SHIFT) |
 583                (config_params->mfilt2 << CCDC_MFILT2_SHIFT));
 584
 585        regw(val, GAMMAWD);
 586        dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to GAMMAWD...\n", val);
 587
 588        /* configure video window */
 589        ccdc_setwin(&params->win, params->frm_fmt, 1);
 590
 591        /* Optical Clamp Averaging */
 592        ccdc_config_black_clamp(&config_params->blk_clamp);
 593
 594        /* Black level compensation */
 595        ccdc_config_black_compense(&config_params->blk_comp);
 596
 597        /* Vertical Defect Correction if needed */
 598        if (ccdc_config_vdfc(&config_params->vertical_dft) < 0)
 599                return -EFAULT;
 600
 601        /* color space conversion */
 602        ccdc_config_csc(&config_params->csc);
 603
 604        /* color pattern */
 605        ccdc_config_color_patterns(&config_params->col_pat_field0,
 606                                   &config_params->col_pat_field1);
 607
 608        /* Configure the Gain  & offset control */
 609        ccdc_config_gain_offset();
 610
 611        dev_dbg(ccdc_cfg.dev, "\nWriting %x to COLPTN...\n", val);
 612
 613        /* Configure DATAOFST  register */
 614        val = (config_params->data_offset.horz_offset & CCDC_DATAOFST_MASK) <<
 615                CCDC_DATAOFST_H_SHIFT;
 616        val |= (config_params->data_offset.vert_offset & CCDC_DATAOFST_MASK) <<
 617                CCDC_DATAOFST_V_SHIFT;
 618        regw(val, DATAOFST);
 619
 620        /* configuring HSIZE register */
 621        val = (params->horz_flip_enable & CCDC_HSIZE_FLIP_MASK) <<
 622                CCDC_HSIZE_FLIP_SHIFT;
 623
 624        /* If pack 8 is enable then 1 pixel will take 1 byte */
 625        if ((config_params->data_sz == CCDC_DATA_8BITS) ||
 626             config_params->alaw.enable) {
 627                val |= (((params->win.width) + 31) >> 5) &
 628                        CCDC_HSIZE_VAL_MASK;
 629
 630                /* adjust to multiple of 32 */
 631                dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to HSIZE...\n",
 632                       (((params->win.width) + 31) >> 5) &
 633                        CCDC_HSIZE_VAL_MASK);
 634        } else {
 635                /* else one pixel will take 2 byte */
 636                val |= (((params->win.width * 2) + 31) >> 5) &
 637                        CCDC_HSIZE_VAL_MASK;
 638
 639                dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to HSIZE...\n",
 640                       (((params->win.width * 2) + 31) >> 5) &
 641                        CCDC_HSIZE_VAL_MASK);
 642        }
 643        regw(val, HSIZE);
 644
 645        /* Configure SDOFST register */
 646        if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) {
 647                if (params->image_invert_enable) {
 648                        /* For interlace inverse mode */
 649                        regw(CCDC_SDOFST_INTERLACE_INVERSE, SDOFST);
 650                        dev_dbg(ccdc_cfg.dev, "\nWriting %x to SDOFST...\n",
 651                                CCDC_SDOFST_INTERLACE_INVERSE);
 652                } else {
 653                        /* For interlace non inverse mode */
 654                        regw(CCDC_SDOFST_INTERLACE_NORMAL, SDOFST);
 655                        dev_dbg(ccdc_cfg.dev, "\nWriting %x to SDOFST...\n",
 656                                CCDC_SDOFST_INTERLACE_NORMAL);
 657                }
 658        } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
 659                if (params->image_invert_enable) {
 660                        /* For progessive inverse mode */
 661                        regw(CCDC_SDOFST_PROGRESSIVE_INVERSE, SDOFST);
 662                        dev_dbg(ccdc_cfg.dev, "\nWriting %x to SDOFST...\n",
 663                                CCDC_SDOFST_PROGRESSIVE_INVERSE);
 664                } else {
 665                        /* For progessive non inverse mode */
 666                        regw(CCDC_SDOFST_PROGRESSIVE_NORMAL, SDOFST);
 667                        dev_dbg(ccdc_cfg.dev, "\nWriting %x to SDOFST...\n",
 668                                CCDC_SDOFST_PROGRESSIVE_NORMAL);
 669                }
 670        }
 671        dev_dbg(ccdc_cfg.dev, "\nend of ccdc_config_raw...");
 672        return 0;
 673}
 674
 675static int ccdc_configure(void)
 676{
 677        if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 678                return ccdc_config_raw();
 679        else
 680                ccdc_config_ycbcr();
 681        return 0;
 682}
 683
 684static int ccdc_set_buftype(enum ccdc_buftype buf_type)
 685{
 686        if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 687                ccdc_cfg.bayer.buf_type = buf_type;
 688        else
 689                ccdc_cfg.ycbcr.buf_type = buf_type;
 690        return 0;
 691}
 692static enum ccdc_buftype ccdc_get_buftype(void)
 693{
 694        if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 695                return ccdc_cfg.bayer.buf_type;
 696        return ccdc_cfg.ycbcr.buf_type;
 697}
 698
 699static int ccdc_enum_pix(u32 *pix, int i)
 700{
 701        int ret = -EINVAL;
 702        if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
 703                if (i < ARRAY_SIZE(ccdc_raw_bayer_pix_formats)) {
 704                        *pix = ccdc_raw_bayer_pix_formats[i];
 705                        ret = 0;
 706                }
 707        } else {
 708                if (i < ARRAY_SIZE(ccdc_raw_yuv_pix_formats)) {
 709                        *pix = ccdc_raw_yuv_pix_formats[i];
 710                        ret = 0;
 711                }
 712        }
 713        return ret;
 714}
 715
 716static int ccdc_set_pixel_format(u32 pixfmt)
 717{
 718        struct ccdc_a_law *alaw = &ccdc_cfg.bayer.config_params.alaw;
 719
 720        if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
 721                ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
 722                if (pixfmt == V4L2_PIX_FMT_SBGGR8)
 723                        alaw->enable = 1;
 724                else if (pixfmt != V4L2_PIX_FMT_SBGGR16)
 725                        return -EINVAL;
 726        } else {
 727                if (pixfmt == V4L2_PIX_FMT_YUYV)
 728                        ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR;
 729                else if (pixfmt == V4L2_PIX_FMT_UYVY)
 730                        ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
 731                else
 732                        return -EINVAL;
 733        }
 734        return 0;
 735}
 736static u32 ccdc_get_pixel_format(void)
 737{
 738        struct ccdc_a_law *alaw = &ccdc_cfg.bayer.config_params.alaw;
 739        u32 pixfmt;
 740
 741        if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 742                if (alaw->enable)
 743                        pixfmt = V4L2_PIX_FMT_SBGGR8;
 744                else
 745                        pixfmt = V4L2_PIX_FMT_SBGGR16;
 746        else {
 747                if (ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR)
 748                        pixfmt = V4L2_PIX_FMT_YUYV;
 749                else
 750                        pixfmt = V4L2_PIX_FMT_UYVY;
 751        }
 752        return pixfmt;
 753}
 754static int ccdc_set_image_window(struct v4l2_rect *win)
 755{
 756        if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 757                ccdc_cfg.bayer.win = *win;
 758        else
 759                ccdc_cfg.ycbcr.win = *win;
 760        return 0;
 761}
 762
 763static void ccdc_get_image_window(struct v4l2_rect *win)
 764{
 765        if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 766                *win = ccdc_cfg.bayer.win;
 767        else
 768                *win = ccdc_cfg.ycbcr.win;
 769}
 770
 771static unsigned int ccdc_get_line_length(void)
 772{
 773        struct ccdc_config_params_raw *config_params =
 774                                &ccdc_cfg.bayer.config_params;
 775        unsigned int len;
 776
 777        if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
 778                if ((config_params->alaw.enable) ||
 779                    (config_params->data_sz == CCDC_DATA_8BITS))
 780                        len = ccdc_cfg.bayer.win.width;
 781                else
 782                        len = ccdc_cfg.bayer.win.width * 2;
 783        } else
 784                len = ccdc_cfg.ycbcr.win.width * 2;
 785        return ALIGN(len, 32);
 786}
 787
 788static int ccdc_set_frame_format(enum ccdc_frmfmt frm_fmt)
 789{
 790        if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 791                ccdc_cfg.bayer.frm_fmt = frm_fmt;
 792        else
 793                ccdc_cfg.ycbcr.frm_fmt = frm_fmt;
 794        return 0;
 795}
 796
 797static enum ccdc_frmfmt ccdc_get_frame_format(void)
 798{
 799        if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 800                return ccdc_cfg.bayer.frm_fmt;
 801        else
 802                return ccdc_cfg.ycbcr.frm_fmt;
 803}
 804
 805static int ccdc_getfid(void)
 806{
 807        return  (regr(MODESET) >> 15) & 1;
 808}
 809
 810/* misc operations */
 811static inline void ccdc_setfbaddr(unsigned long addr)
 812{
 813        regw((addr >> 21) & 0x007f, STADRH);
 814        regw((addr >> 5) & 0x0ffff, STADRL);
 815}
 816
 817static int ccdc_set_hw_if_params(struct vpfe_hw_if_param *params)
 818{
 819        ccdc_cfg.if_type = params->if_type;
 820
 821        switch (params->if_type) {
 822        case VPFE_BT656:
 823        case VPFE_YCBCR_SYNC_16:
 824        case VPFE_YCBCR_SYNC_8:
 825                ccdc_cfg.ycbcr.vd_pol = params->vdpol;
 826                ccdc_cfg.ycbcr.hd_pol = params->hdpol;
 827                break;
 828        default:
 829                /* TODO add support for raw bayer here */
 830                return -EINVAL;
 831        }
 832        return 0;
 833}
 834
 835static const struct ccdc_hw_device ccdc_hw_dev = {
 836        .name = "DM355 CCDC",
 837        .owner = THIS_MODULE,
 838        .hw_ops = {
 839                .open = ccdc_open,
 840                .close = ccdc_close,
 841                .enable = ccdc_enable,
 842                .enable_out_to_sdram = ccdc_enable_output_to_sdram,
 843                .set_hw_if_params = ccdc_set_hw_if_params,
 844                .configure = ccdc_configure,
 845                .set_buftype = ccdc_set_buftype,
 846                .get_buftype = ccdc_get_buftype,
 847                .enum_pix = ccdc_enum_pix,
 848                .set_pixel_format = ccdc_set_pixel_format,
 849                .get_pixel_format = ccdc_get_pixel_format,
 850                .set_frame_format = ccdc_set_frame_format,
 851                .get_frame_format = ccdc_get_frame_format,
 852                .set_image_window = ccdc_set_image_window,
 853                .get_image_window = ccdc_get_image_window,
 854                .get_line_length = ccdc_get_line_length,
 855                .setfbaddr = ccdc_setfbaddr,
 856                .getfid = ccdc_getfid,
 857        },
 858};
 859
 860static int dm355_ccdc_probe(struct platform_device *pdev)
 861{
 862        void (*setup_pinmux)(void);
 863        struct resource *res;
 864        int status = 0;
 865
 866        /*
 867         * first try to register with vpfe. If not correct platform, then we
 868         * don't have to iomap
 869         */
 870        status = vpfe_register_ccdc_device(&ccdc_hw_dev);
 871        if (status < 0)
 872                return status;
 873
 874        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 875        if (!res) {
 876                status = -ENODEV;
 877                goto fail_nores;
 878        }
 879
 880        res = request_mem_region(res->start, resource_size(res), res->name);
 881        if (!res) {
 882                status = -EBUSY;
 883                goto fail_nores;
 884        }
 885
 886        ccdc_cfg.base_addr = ioremap_nocache(res->start, resource_size(res));
 887        if (!ccdc_cfg.base_addr) {
 888                status = -ENOMEM;
 889                goto fail_nomem;
 890        }
 891
 892        /* Platform data holds setup_pinmux function ptr */
 893        if (NULL == pdev->dev.platform_data) {
 894                status = -ENODEV;
 895                goto fail_nomap;
 896        }
 897        setup_pinmux = pdev->dev.platform_data;
 898        /*
 899         * setup Mux configuration for ccdc which may be different for
 900         * different SoCs using this CCDC
 901         */
 902        setup_pinmux();
 903        ccdc_cfg.dev = &pdev->dev;
 904        printk(KERN_NOTICE "%s is registered with vpfe.\n", ccdc_hw_dev.name);
 905        return 0;
 906fail_nomap:
 907        iounmap(ccdc_cfg.base_addr);
 908fail_nomem:
 909        release_mem_region(res->start, resource_size(res));
 910fail_nores:
 911        vpfe_unregister_ccdc_device(&ccdc_hw_dev);
 912        return status;
 913}
 914
 915static int dm355_ccdc_remove(struct platform_device *pdev)
 916{
 917        struct resource *res;
 918
 919        iounmap(ccdc_cfg.base_addr);
 920        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 921        if (res)
 922                release_mem_region(res->start, resource_size(res));
 923        vpfe_unregister_ccdc_device(&ccdc_hw_dev);
 924        return 0;
 925}
 926
 927static struct platform_driver dm355_ccdc_driver = {
 928        .driver = {
 929                .name   = "dm355_ccdc",
 930        },
 931        .remove = dm355_ccdc_remove,
 932        .probe = dm355_ccdc_probe,
 933};
 934
 935module_platform_driver(dm355_ccdc_driver);
 936