drivers/media/platform/davinci/dm355_ccdc.c

   1 /*
   2  * Copyright (C) 2005-2009 Texas Instruments Inc
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * CCDC hardware module for DM355
  15  * ------------------------------
  16  *
  17  * This module is for configuring DM355 CCD controller of VPFE to capture
  18  * Raw yuv or Bayer RGB data from a decoder. CCDC has several modules
  19  * such as Defect Pixel Correction, Color Space Conversion etc to
  20  * pre-process the Bayer RGB data, before writing it to SDRAM. This
  21  * module also allows application to configure individual
  22  * module parameters through VPFE_CMD_S_CCDC_RAW_PARAMS IOCTL.
  23  * To do so, application include dm355_ccdc.h and vpfe_capture.h header
  24  * files. The setparams() API is called by vpfe_capture driver
  25  * to configure module parameters
  26  *
  27  * TODO: 1) Raw bayer parameter settings and bayer capture
  28  *       2) Split module parameter structure to module specific ioctl structs
  29  *       3) add support for lense shading correction
  30  *       4) investigate if enum used for user space type definition
  31  *          to be replaced by #defines or integer
  32  */
  33 #include <linux/platform_device.h>
  34 #include <linux/uaccess.h>
  35 #include <linux/videodev2.h>
  36 #include <linux/err.h>
  37 #include <linux/module.h>
  38
  39 #include <media/davinci/dm355_ccdc.h>
  40 #include <media/davinci/vpss.h>
  41
  42 #include "dm355_ccdc_regs.h"
  43 #include "ccdc_hw_device.h"
  44
  45 MODULE_LICENSE("GPL");
  46 MODULE_DESCRIPTION("CCDC Driver for DM355");
  47 MODULE_AUTHOR("Texas Instruments");
  48
  49 static struct ccdc_oper_config {
  50         struct device *dev;
  51         /* CCDC interface type */
  52         enum vpfe_hw_if_type if_type;
  53         /* Raw Bayer configuration */
  54         struct ccdc_params_raw bayer;
  55         /* YCbCr configuration */
  56         struct ccdc_params_ycbcr ycbcr;
  57         /* ccdc base address */
  58         void __iomem *base_addr;
  59 } ccdc_cfg = {
  60         /* Raw configurations */
  61         .bayer = {
  62                 .pix_fmt = CCDC_PIXFMT_RAW,
  63                 .frm_fmt = CCDC_FRMFMT_PROGRESSIVE,
  64                 .win = CCDC_WIN_VGA,
  65                 .fid_pol = VPFE_PINPOL_POSITIVE,
  66                 .vd_pol = VPFE_PINPOL_POSITIVE,
  67                 .hd_pol = VPFE_PINPOL_POSITIVE,
  68                 .gain = {
  69                         .r_ye = 256,
  70                         .gb_g = 256,
  71                         .gr_cy = 256,
  72                         .b_mg = 256
  73                 },
  74                 .config_params = {
  75                         .datasft = 2,
  76                         .mfilt1 = CCDC_NO_MEDIAN_FILTER1,
  77                         .mfilt2 = CCDC_NO_MEDIAN_FILTER2,
  78                         .alaw = {
  79                                 .gamma_wd = 2,
  80                         },
  81                         .blk_clamp = {
  82                                 .sample_pixel = 1,
  83                                 .dc_sub = 25
  84                         },
  85                         .col_pat_field0 = {
  86                                 .olop = CCDC_GREEN_BLUE,
  87                                 .olep = CCDC_BLUE,
  88                                 .elop = CCDC_RED,
  89                                 .elep = CCDC_GREEN_RED
  90                         },
  91                         .col_pat_field1 = {
  92                                 .olop = CCDC_GREEN_BLUE,
  93                                 .olep = CCDC_BLUE,
  94                                 .elop = CCDC_RED,
  95                                 .elep = CCDC_GREEN_RED
  96                         },
  97                 },
  98         },
  99         /* YCbCr configuration */
 100         .ycbcr = {
 101                 .win = CCDC_WIN_PAL,
 102                 .pix_fmt = CCDC_PIXFMT_YCBCR_8BIT,
 103                 .frm_fmt = CCDC_FRMFMT_INTERLACED,
 104                 .fid_pol = VPFE_PINPOL_POSITIVE,
 105                 .vd_pol = VPFE_PINPOL_POSITIVE,
 106                 .hd_pol = VPFE_PINPOL_POSITIVE,
 107                 .bt656_enable = 1,
 108                 .pix_order = CCDC_PIXORDER_CBYCRY,
 109                 .buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED
 110         },
 111 };
 112
 113
 114 /* Raw Bayer formats */
 115 static u32 ccdc_raw_bayer_pix_formats[] =
 116                 {V4L2_PIX_FMT_SBGGR8, V4L2_PIX_FMT_SBGGR16};
 117
 118 /* Raw YUV formats */
 119 static u32 ccdc_raw_yuv_pix_formats[] =
 120                 {V4L2_PIX_FMT_UYVY, V4L2_PIX_FMT_YUYV};
 121
 122 /* register access routines */
 123 static inline u32 regr(u32 offset)
 124 {
 125         return __raw_readl(ccdc_cfg.base_addr + offset);
 126 }
 127
 128 static inline void regw(u32 val, u32 offset)
 129 {
 130         __raw_writel(val, ccdc_cfg.base_addr + offset);
 131 }
 132
 133 static void ccdc_enable(int en)
 134 {
 135         unsigned int temp;
 136         temp = regr(SYNCEN);
 137         temp &= (~CCDC_SYNCEN_VDHDEN_MASK);
 138         temp |= (en & CCDC_SYNCEN_VDHDEN_MASK);
 139         regw(temp, SYNCEN);
 140 }
 141
 142 static void ccdc_enable_output_to_sdram(int en)
 143 {
 144         unsigned int temp;
 145         temp = regr(SYNCEN);
 146         temp &= (~(CCDC_SYNCEN_WEN_MASK));
 147         temp |= ((en << CCDC_SYNCEN_WEN_SHIFT) & CCDC_SYNCEN_WEN_MASK);
 148         regw(temp, SYNCEN);
 149 }
 150
 151 static void ccdc_config_gain_offset(void)
 152 {
 153         /* configure gain */
 154         regw(ccdc_cfg.bayer.gain.r_ye, RYEGAIN);
 155         regw(ccdc_cfg.bayer.gain.gr_cy, GRCYGAIN);
 156         regw(ccdc_cfg.bayer.gain.gb_g, GBGGAIN);
 157         regw(ccdc_cfg.bayer.gain.b_mg, BMGGAIN);
 158         /* configure offset */
 159         regw(ccdc_cfg.bayer.ccdc_offset, OFFSET);
 160 }
 161
 162 /*
 163  * ccdc_restore_defaults()
 164  * This function restore power on defaults in the ccdc registers
 165  */
 166 static int ccdc_restore_defaults(void)
 167 {
 168         int i;
 169
 170         dev_dbg(ccdc_cfg.dev, "\nstarting ccdc_restore_defaults...");
 171         /* set all registers to zero */
 172         for (i = 0; i <= CCDC_REG_LAST; i += 4)
 173                 regw(0, i);
 174
 175         /* now override the values with power on defaults in registers */
 176         regw(MODESET_DEFAULT, MODESET);
 177         /* no culling support */
 178         regw(CULH_DEFAULT, CULH);
 179         regw(CULV_DEFAULT, CULV);
 180         /* Set default Gain and Offset */
 181         ccdc_cfg.bayer.gain.r_ye = GAIN_DEFAULT;
 182         ccdc_cfg.bayer.gain.gb_g = GAIN_DEFAULT;
 183         ccdc_cfg.bayer.gain.gr_cy = GAIN_DEFAULT;
 184         ccdc_cfg.bayer.gain.b_mg = GAIN_DEFAULT;
 185         ccdc_config_gain_offset();
 186         regw(OUTCLIP_DEFAULT, OUTCLIP);
 187         regw(LSCCFG2_DEFAULT, LSCCFG2);
 188         /* select ccdc input */
 189         if (vpss_select_ccdc_source(VPSS_CCDCIN)) {
 190                 dev_dbg(ccdc_cfg.dev, "\ncouldn't select ccdc input source");
 191                 return -EFAULT;
 192         }
 193         /* select ccdc clock */
 194         if (vpss_enable_clock(VPSS_CCDC_CLOCK, 1) < 0) {
 195                 dev_dbg(ccdc_cfg.dev, "\ncouldn't enable ccdc clock");
 196                 return -EFAULT;
 197         }
 198         dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_restore_defaults...");
 199         return 0;
 200 }
 201
 202 static int ccdc_open(struct device *device)
 203 {
 204         return ccdc_restore_defaults();
 205 }
 206
 207 static int ccdc_close(struct device *device)
 208 {
 209         /* disable clock */
 210         vpss_enable_clock(VPSS_CCDC_CLOCK, 0);
 211         /* do nothing for now */
 212         return 0;
 213 }
 214 /*
 215  * ccdc_setwin()
 216  * This function will configure the window size to
 217  * be capture in CCDC reg.
 218  */
 219 static void ccdc_setwin(struct v4l2_rect *image_win,
 220                         enum ccdc_frmfmt frm_fmt, int ppc)
 221 {
 222         int horz_start, horz_nr_pixels;
 223         int vert_start, vert_nr_lines;
 224         int mid_img = 0;
 225
 226         dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_setwin...");
 227
 228         /*
 229          * ppc - per pixel count. indicates how many pixels per cell
 230          * output to SDRAM. example, for ycbcr, it is one y and one c, so 2.
 231          * raw capture this is 1
 232          */
 233         horz_start = image_win->left << (ppc - 1);
 234         horz_nr_pixels = ((image_win->width) << (ppc - 1)) - 1;
 235
 236         /* Writing the horizontal info into the registers */
 237         regw(horz_start, SPH);
 238         regw(horz_nr_pixels, NPH);
 239         vert_start = image_win->top;
 240
 241         if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
 242                 vert_nr_lines = (image_win->height >> 1) - 1;
 243                 vert_start >>= 1;
 244                 /* Since first line doesn't have any data */
 245                 vert_start += 1;
 246                 /* configure VDINT0 and VDINT1 */
 247                 regw(vert_start, VDINT0);
 248         } else {
 249                 /* Since first line doesn't have any data */
 250                 vert_start += 1;
 251                 vert_nr_lines = image_win->height - 1;
 252                 /* configure VDINT0 and VDINT1 */
 253                 mid_img = vert_start + (image_win->height / 2);
 254                 regw(vert_start, VDINT0);
 255                 regw(mid_img, VDINT1);
 256         }
 257         regw(vert_start & CCDC_START_VER_ONE_MASK, SLV0);
 258         regw(vert_start & CCDC_START_VER_TWO_MASK, SLV1);
 259         regw(vert_nr_lines & CCDC_NUM_LINES_VER, NLV);
 260         dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_setwin...");
 261 }
 262
 263 static int validate_ccdc_param(struct ccdc_config_params_raw *ccdcparam)
 264 {
 265         if (ccdcparam->datasft < CCDC_DATA_NO_SHIFT ||
 266             ccdcparam->datasft > CCDC_DATA_SHIFT_6BIT) {
 267                 dev_dbg(ccdc_cfg.dev, "Invalid value of data shift\n");
 268                 return -EINVAL;
 269         }
 270
 271         if (ccdcparam->mfilt1 < CCDC_NO_MEDIAN_FILTER1 ||
 272             ccdcparam->mfilt1 > CCDC_MEDIAN_FILTER1) {
 273                 dev_dbg(ccdc_cfg.dev, "Invalid value of median filter1\n");
 274                 return -EINVAL;
 275         }
 276
 277         if (ccdcparam->mfilt2 < CCDC_NO_MEDIAN_FILTER2 ||
 278             ccdcparam->mfilt2 > CCDC_MEDIAN_FILTER2) {
 279                 dev_dbg(ccdc_cfg.dev, "Invalid value of median filter2\n");
 280                 return -EINVAL;
 281         }
 282
 283         if ((ccdcparam->med_filt_thres < 0) ||
 284            (ccdcparam->med_filt_thres > CCDC_MED_FILT_THRESH)) {
 285                 dev_dbg(ccdc_cfg.dev,
 286                         "Invalid value of median filter threshold\n");
 287                 return -EINVAL;
 288         }
 289
 290         if (ccdcparam->data_sz < CCDC_DATA_16BITS ||
 291             ccdcparam->data_sz > CCDC_DATA_8BITS) {
 292                 dev_dbg(ccdc_cfg.dev, "Invalid value of data size\n");
 293                 return -EINVAL;
 294         }
 295
 296         if (ccdcparam->alaw.enable) {
 297                 if (ccdcparam->alaw.gamma_wd < CCDC_GAMMA_BITS_13_4 ||
 298                     ccdcparam->alaw.gamma_wd > CCDC_GAMMA_BITS_09_0) {
 299                         dev_dbg(ccdc_cfg.dev, "Invalid value of ALAW\n");
 300                         return -EINVAL;
 301                 }
 302         }
 303
 304         if (ccdcparam->blk_clamp.b_clamp_enable) {
 305                 if (ccdcparam->blk_clamp.sample_pixel < CCDC_SAMPLE_1PIXELS ||
 306                     ccdcparam->blk_clamp.sample_pixel > CCDC_SAMPLE_16PIXELS) {
 307                         dev_dbg(ccdc_cfg.dev,
 308                                 "Invalid value of sample pixel\n");
 309                         return -EINVAL;
 310                 }
 311                 if (ccdcparam->blk_clamp.sample_ln < CCDC_SAMPLE_1LINES ||
 312                     ccdcparam->blk_clamp.sample_ln > CCDC_SAMPLE_16LINES) {
 313                         dev_dbg(ccdc_cfg.dev,
 314                                 "Invalid value of sample lines\n");
 315                         return -EINVAL;
 316                 }
 317         }
 318         return 0;
 319 }
 320
 321 /* Parameter operations */
 322 static int ccdc_set_params(void __user *params)
 323 {
 324         struct ccdc_config_params_raw ccdc_raw_params;
 325         int x;
 326
 327         /* only raw module parameters can be set through the IOCTL */
 328         if (ccdc_cfg.if_type != VPFE_RAW_BAYER)
 329                 return -EINVAL;
 330
 331         x = copy_from_user(&ccdc_raw_params, params, sizeof(ccdc_raw_params));
 332         if (x) {
 333                 dev_dbg(ccdc_cfg.dev, "ccdc_set_params: error in copying ccdcparams, %d\n",
 334                         x);
 335                 return -EFAULT;
 336         }
 337
 338         if (!validate_ccdc_param(&ccdc_raw_params)) {
 339                 memcpy(&ccdc_cfg.bayer.config_params,
 340                         &ccdc_raw_params,
 341                         sizeof(ccdc_raw_params));
 342                 return 0;
 343         }
 344         return -EINVAL;
 345 }
 346
 347 /* This function will configure CCDC for YCbCr video capture */
 348 static void ccdc_config_ycbcr(void)
 349 {
 350         struct ccdc_params_ycbcr *params = &ccdc_cfg.ycbcr;
 351         u32 temp;
 352
 353         /* first set the CCDC power on defaults values in all registers */
 354         dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_config_ycbcr...");
 355         ccdc_restore_defaults();
 356
 357         /* configure pixel format & video frame format */
 358         temp = (((params->pix_fmt & CCDC_INPUT_MODE_MASK) <<
 359                 CCDC_INPUT_MODE_SHIFT) |
 360                 ((params->frm_fmt & CCDC_FRM_FMT_MASK) <<
 361                 CCDC_FRM_FMT_SHIFT));
 362
 363         /* setup BT.656 sync mode */
 364         if (params->bt656_enable) {
 365                 regw(CCDC_REC656IF_BT656_EN, REC656IF);
 366                 /*
 367                  * configure the FID, VD, HD pin polarity fld,hd pol positive,
 368                  * vd negative, 8-bit pack mode
 369                  */
 370                 temp |= CCDC_VD_POL_NEGATIVE;
 371         } else {                /* y/c external sync mode */
 372                 temp |= (((params->fid_pol & CCDC_FID_POL_MASK) <<
 373                         CCDC_FID_POL_SHIFT) |
 374                         ((params->hd_pol & CCDC_HD_POL_MASK) <<
 375                         CCDC_HD_POL_SHIFT) |
 376                         ((params->vd_pol & CCDC_VD_POL_MASK) <<
 377                         CCDC_VD_POL_SHIFT));
 378         }
 379
 380         /* pack the data to 8-bit */
 381         temp |= CCDC_DATA_PACK_ENABLE;
 382
 383         regw(temp, MODESET);
 384
 385         /* configure video window */
 386         ccdc_setwin(&params->win, params->frm_fmt, 2);
 387
 388         /* configure the order of y cb cr in SD-RAM */
 389         temp = (params->pix_order << CCDC_Y8POS_SHIFT);
 390         temp |= CCDC_LATCH_ON_VSYNC_DISABLE | CCDC_CCDCFG_FIDMD_NO_LATCH_VSYNC;
 391         regw(temp, CCDCFG);
 392
 393         /*
 394          * configure the horizontal line offset. This is done by rounding up
 395          * width to a multiple of 16 pixels and multiply by two to account for
 396          * y:cb:cr 4:2:2 data
 397          */
 398         regw(((params->win.width * 2 + 31) >> 5), HSIZE);
 399
 400         /* configure the memory line offset */
 401         if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) {
 402                 /* two fields are interleaved in memory */
 403                 regw(CCDC_SDOFST_FIELD_INTERLEAVED, SDOFST);
 404         }
 405
 406         dev_dbg(ccdc_cfg.dev, "\nEnd of ccdc_config_ycbcr...\n");
 407 }
 408
 409 /*
 410  * ccdc_config_black_clamp()
 411  * configure parameters for Optical Black Clamp
 412  */
 413 static void ccdc_config_black_clamp(struct ccdc_black_clamp *bclamp)
 414 {
 415         u32 val;
 416
 417         if (!bclamp->b_clamp_enable) {
 418                 /* configure DCSub */
 419                 regw(bclamp->dc_sub & CCDC_BLK_DC_SUB_MASK, DCSUB);
 420                 regw(0x0000, CLAMP);
 421                 return;
 422         }
 423         /* Enable the Black clamping, set sample lines and pixels */
 424         val = (bclamp->start_pixel & CCDC_BLK_ST_PXL_MASK) |
 425               ((bclamp->sample_pixel & CCDC_BLK_SAMPLE_LN_MASK) <<
 426                 CCDC_BLK_SAMPLE_LN_SHIFT) | CCDC_BLK_CLAMP_ENABLE;
 427         regw(val, CLAMP);
 428
 429         /* If Black clamping is enable then make dcsub 0 */
 430         val = (bclamp->sample_ln & CCDC_NUM_LINE_CALC_MASK)
 431                         << CCDC_NUM_LINE_CALC_SHIFT;
 432         regw(val, DCSUB);
 433 }
 434
 435 /*
 436  * ccdc_config_black_compense()
 437  * configure parameters for Black Compensation
 438  */
 439 static void ccdc_config_black_compense(struct ccdc_black_compensation *bcomp)
 440 {
 441         u32 val;
 442
 443         val = (bcomp->b & CCDC_BLK_COMP_MASK) |
 444                 ((bcomp->gb & CCDC_BLK_COMP_MASK) <<
 445                 CCDC_BLK_COMP_GB_COMP_SHIFT);
 446         regw(val, BLKCMP1);
 447
 448         val = ((bcomp->gr & CCDC_BLK_COMP_MASK) <<
 449                 CCDC_BLK_COMP_GR_COMP_SHIFT) |
 450                 ((bcomp->r & CCDC_BLK_COMP_MASK) <<
 451                 CCDC_BLK_COMP_R_COMP_SHIFT);
 452         regw(val, BLKCMP0);
 453 }
 454
 455 /*
 456  * ccdc_write_dfc_entry()
 457  * write an entry in the dfc table.
 458  */
 459 static int ccdc_write_dfc_entry(int index, struct ccdc_vertical_dft *dfc)
 460 {
 461 /* TODO This is to be re-visited and adjusted */
 462 #define DFC_WRITE_WAIT_COUNT    1000
 463         u32 val, count = DFC_WRITE_WAIT_COUNT;
 464
 465         regw(dfc->dft_corr_vert[index], DFCMEM0);
 466         regw(dfc->dft_corr_horz[index], DFCMEM1);
 467         regw(dfc->dft_corr_sub1[index], DFCMEM2);
 468         regw(dfc->dft_corr_sub2[index], DFCMEM3);
 469         regw(dfc->dft_corr_sub3[index], DFCMEM4);
 470         /* set WR bit to write */
 471         val = regr(DFCMEMCTL) | CCDC_DFCMEMCTL_DFCMWR_MASK;
 472         regw(val, DFCMEMCTL);
 473
 474         /*
 475          * Assume, it is very short. If we get an error, we need to
 476          * adjust this value
 477          */
 478         while (regr(DFCMEMCTL) & CCDC_DFCMEMCTL_DFCMWR_MASK)
 479                 count--;
 480         /*
 481          * TODO We expect the count to be non-zero to be successful. Adjust
 482          * the count if write requires more time
 483          */
 484
 485         if (count) {
 486                 dev_err(ccdc_cfg.dev, "defect table write timeout !!!\n");
 487                 return -1;
 488         }
 489         return 0;
 490 }
 491
 492 /*
 493  * ccdc_config_vdfc()
 494  * configure parameters for Vertical Defect Correction
 495  */
 496 static int ccdc_config_vdfc(struct ccdc_vertical_dft *dfc)
 497 {
 498         u32 val;
 499         int i;
 500
 501         /* Configure General Defect Correction. The table used is from IPIPE */
 502         val = dfc->gen_dft_en & CCDC_DFCCTL_GDFCEN_MASK;
 503
 504         /* Configure Vertical Defect Correction if needed */
 505         if (!dfc->ver_dft_en) {
 506                 /* Enable only General Defect Correction */
 507                 regw(val, DFCCTL);
 508                 return 0;
 509         }
 510
 511         if (dfc->table_size > CCDC_DFT_TABLE_SIZE)
 512                 return -EINVAL;
 513
 514         val |= CCDC_DFCCTL_VDFC_DISABLE;
 515         val |= (dfc->dft_corr_ctl.vdfcsl & CCDC_DFCCTL_VDFCSL_MASK) <<
 516                 CCDC_DFCCTL_VDFCSL_SHIFT;
 517         val |= (dfc->dft_corr_ctl.vdfcuda & CCDC_DFCCTL_VDFCUDA_MASK) <<
 518                 CCDC_DFCCTL_VDFCUDA_SHIFT;
 519         val |= (dfc->dft_corr_ctl.vdflsft & CCDC_DFCCTL_VDFLSFT_MASK) <<
 520                 CCDC_DFCCTL_VDFLSFT_SHIFT;
 521         regw(val , DFCCTL);
 522
 523         /* clear address ptr to offset 0 */
 524         val = CCDC_DFCMEMCTL_DFCMARST_MASK << CCDC_DFCMEMCTL_DFCMARST_SHIFT;
 525
 526         /* write defect table entries */
 527         for (i = 0; i < dfc->table_size; i++) {
 528                 /* increment address for non zero index */
 529                 if (i != 0)
 530                         val = CCDC_DFCMEMCTL_INC_ADDR;
 531                 regw(val, DFCMEMCTL);
 532                 if (ccdc_write_dfc_entry(i, dfc) < 0)
 533                         return -EFAULT;
 534         }
 535
 536         /* update saturation level and enable dfc */
 537         regw(dfc->saturation_ctl & CCDC_VDC_DFCVSAT_MASK, DFCVSAT);
 538         val = regr(DFCCTL) | (CCDC_DFCCTL_VDFCEN_MASK <<
 539                         CCDC_DFCCTL_VDFCEN_SHIFT);
 540         regw(val, DFCCTL);
 541         return 0;
 542 }
 543
 544 /*
 545  * ccdc_config_csc()
 546  * configure parameters for color space conversion
 547  * Each register CSCM0-7 has two values in S8Q5 format.
 548  */
 549 static void ccdc_config_csc(struct ccdc_csc *csc)
 550 {
 551         u32 val1 = 0, val2;
 552         int i;
 553
 554         if (!csc->enable)
 555                 return;
 556
 557         /* Enable the CSC sub-module */
 558         regw(CCDC_CSC_ENABLE, CSCCTL);
 559
 560         /* Converting the co-eff as per the format of the register */
 561         for (i = 0; i < CCDC_CSC_COEFF_TABLE_SIZE; i++) {
 562                 if ((i % 2) == 0) {
 563                         /* CSCM - LSB */
 564                         val1 = (csc->coeff[i].integer &
 565                                 CCDC_CSC_COEF_INTEG_MASK)
 566                                 << CCDC_CSC_COEF_INTEG_SHIFT;
 567                         /*
 568                          * convert decimal part to binary. Use 2 decimal
 569                          * precision, user values range from .00 - 0.99
 570                          */
 571                         val1 |= (((csc->coeff[i].decimal &
 572                                 CCDC_CSC_COEF_DECIMAL_MASK) *
 573                                 CCDC_CSC_DEC_MAX) / 100);
 574                 } else {
 575
 576                         /* CSCM - MSB */
 577                         val2 = (csc->coeff[i].integer &
 578                                 CCDC_CSC_COEF_INTEG_MASK)
 579                                 << CCDC_CSC_COEF_INTEG_SHIFT;
 580                         val2 |= (((csc->coeff[i].decimal &
 581                                  CCDC_CSC_COEF_DECIMAL_MASK) *
 582                                  CCDC_CSC_DEC_MAX) / 100);
 583                         val2 <<= CCDC_CSCM_MSB_SHIFT;
 584                         val2 |= val1;
 585                         regw(val2, (CSCM0 + ((i - 1) << 1)));
 586                 }
 587         }
 588 }
 589
 590 /*
 591  * ccdc_config_color_patterns()
 592  * configure parameters for color patterns
 593  */
 594 static void ccdc_config_color_patterns(struct ccdc_col_pat *pat0,
 595                                        struct ccdc_col_pat *pat1)
 596 {
 597         u32 val;
 598
 599         val = (pat0->olop | (pat0->olep << 2) | (pat0->elop << 4) |
 600                 (pat0->elep << 6) | (pat1->olop << 8) | (pat1->olep << 10) |
 601                 (pat1->elop << 12) | (pat1->elep << 14));
 602         regw(val, COLPTN);
 603 }
 604
 605 /* This function will configure CCDC for Raw mode image capture */
 606 static int ccdc_config_raw(void)
 607 {
 608         struct ccdc_params_raw *params = &ccdc_cfg.bayer;
 609         struct ccdc_config_params_raw *config_params =
 610                                         &ccdc_cfg.bayer.config_params;
 611         unsigned int val;
 612
 613         dev_dbg(ccdc_cfg.dev, "\nStarting ccdc_config_raw...");
 614
 615         /* restore power on defaults to register */
 616         ccdc_restore_defaults();
 617
 618         /* CCDCFG register:
 619          * set CCD Not to swap input since input is RAW data
 620          * set FID detection function to Latch at V-Sync
 621          * set WENLOG - ccdc valid area to AND
 622          * set TRGSEL to WENBIT
 623          * set EXTRG to DISABLE
 624          * disable latching function on VSYNC - shadowed registers
 625          */
 626         regw(CCDC_YCINSWP_RAW | CCDC_CCDCFG_FIDMD_LATCH_VSYNC |
 627              CCDC_CCDCFG_WENLOG_AND | CCDC_CCDCFG_TRGSEL_WEN |
 628              CCDC_CCDCFG_EXTRG_DISABLE | CCDC_LATCH_ON_VSYNC_DISABLE, CCDCFG);
 629
 630         /*
 631          * Set VDHD direction to input,  input type to raw input
 632          * normal data polarity, do not use external WEN
 633          */
 634         val = (CCDC_VDHDOUT_INPUT | CCDC_RAW_IP_MODE | CCDC_DATAPOL_NORMAL |
 635                 CCDC_EXWEN_DISABLE);
 636
 637         /*
 638          * Configure the vertical sync polarity (MODESET.VDPOL), horizontal
 639          * sync polarity (MODESET.HDPOL), field id polarity (MODESET.FLDPOL),
 640          * frame format(progressive or interlace), & pixel format (Input mode)
 641          */
 642         val |= (((params->vd_pol & CCDC_VD_POL_MASK) << CCDC_VD_POL_SHIFT) |
 643                 ((params->hd_pol & CCDC_HD_POL_MASK) << CCDC_HD_POL_SHIFT) |
 644                 ((params->fid_pol & CCDC_FID_POL_MASK) << CCDC_FID_POL_SHIFT) |
 645                 ((params->frm_fmt & CCDC_FRM_FMT_MASK) << CCDC_FRM_FMT_SHIFT) |
 646                 ((params->pix_fmt & CCDC_PIX_FMT_MASK) << CCDC_PIX_FMT_SHIFT));
 647
 648         /* set pack for alaw compression */
 649         if ((config_params->data_sz == CCDC_DATA_8BITS) ||
 650              config_params->alaw.enable)
 651                 val |= CCDC_DATA_PACK_ENABLE;
 652
 653         /* Configure for LPF */
 654         if (config_params->lpf_enable)
 655                 val |= (config_params->lpf_enable & CCDC_LPF_MASK) <<
 656                         CCDC_LPF_SHIFT;
 657
 658         /* Configure the data shift */
 659         val |= (config_params->datasft & CCDC_DATASFT_MASK) <<
 660                 CCDC_DATASFT_SHIFT;
 661         regw(val , MODESET);
 662         dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to MODESET...\n", val);
 663
 664         /* Configure the Median Filter threshold */
 665         regw((config_params->med_filt_thres) & CCDC_MED_FILT_THRESH, MEDFILT);
 666
 667         /* Configure GAMMAWD register. defaur 11-2, and Mosaic cfa pattern */
 668         val = CCDC_GAMMA_BITS_11_2 << CCDC_GAMMAWD_INPUT_SHIFT |
 669                 CCDC_CFA_MOSAIC;
 670
 671         /* Enable and configure aLaw register if needed */
 672         if (config_params->alaw.enable) {
 673                 val |= (CCDC_ALAW_ENABLE |
 674                         ((config_params->alaw.gamma_wd &
 675                         CCDC_ALAW_GAMMA_WD_MASK) <<
 676                         CCDC_GAMMAWD_INPUT_SHIFT));
 677         }
 678
 679         /* Configure Median filter1 & filter2 */
 680         val |= ((config_params->mfilt1 << CCDC_MFILT1_SHIFT) |
 681                 (config_params->mfilt2 << CCDC_MFILT2_SHIFT));
 682
 683         regw(val, GAMMAWD);
 684         dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to GAMMAWD...\n", val);
 685
 686         /* configure video window */
 687         ccdc_setwin(&params->win, params->frm_fmt, 1);
 688
 689         /* Optical Clamp Averaging */
 690         ccdc_config_black_clamp(&config_params->blk_clamp);
 691
 692         /* Black level compensation */
 693         ccdc_config_black_compense(&config_params->blk_comp);
 694
 695         /* Vertical Defect Correction if needed */
 696         if (ccdc_config_vdfc(&config_params->vertical_dft) < 0)
 697                 return -EFAULT;
 698
 699         /* color space conversion */
 700         ccdc_config_csc(&config_params->csc);
 701
 702         /* color pattern */
 703         ccdc_config_color_patterns(&config_params->col_pat_field0,
 704                                    &config_params->col_pat_field1);
 705
 706         /* Configure the Gain  & offset control */
 707         ccdc_config_gain_offset();
 708
 709         dev_dbg(ccdc_cfg.dev, "\nWriting %x to COLPTN...\n", val);
 710
 711         /* Configure DATAOFST  register */
 712         val = (config_params->data_offset.horz_offset & CCDC_DATAOFST_MASK) <<
 713                 CCDC_DATAOFST_H_SHIFT;
 714         val |= (config_params->data_offset.vert_offset & CCDC_DATAOFST_MASK) <<
 715                 CCDC_DATAOFST_V_SHIFT;
 716         regw(val, DATAOFST);
 717
 718         /* configuring HSIZE register */
 719         val = (params->horz_flip_enable & CCDC_HSIZE_FLIP_MASK) <<
 720                 CCDC_HSIZE_FLIP_SHIFT;
 721
 722         /* If pack 8 is enable then 1 pixel will take 1 byte */
 723         if ((config_params->data_sz == CCDC_DATA_8BITS) ||
 724              config_params->alaw.enable) {
 725                 val |= (((params->win.width) + 31) >> 5) &
 726                         CCDC_HSIZE_VAL_MASK;
 727
 728                 /* adjust to multiple of 32 */
 729                 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to HSIZE...\n",
 730                        (((params->win.width) + 31) >> 5) &
 731                         CCDC_HSIZE_VAL_MASK);
 732         } else {
 733                 /* else one pixel will take 2 byte */
 734                 val |= (((params->win.width * 2) + 31) >> 5) &
 735                         CCDC_HSIZE_VAL_MASK;
 736
 737                 dev_dbg(ccdc_cfg.dev, "\nWriting 0x%x to HSIZE...\n",
 738                        (((params->win.width * 2) + 31) >> 5) &
 739                         CCDC_HSIZE_VAL_MASK);
 740         }
 741         regw(val, HSIZE);
 742
 743         /* Configure SDOFST register */
 744         if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) {
 745                 if (params->image_invert_enable) {
 746                         /* For interlace inverse mode */
 747                         regw(CCDC_SDOFST_INTERLACE_INVERSE, SDOFST);
 748                         dev_dbg(ccdc_cfg.dev, "\nWriting %x to SDOFST...\n",
 749                                 CCDC_SDOFST_INTERLACE_INVERSE);
 750                 } else {
 751                         /* For interlace non inverse mode */
 752                         regw(CCDC_SDOFST_INTERLACE_NORMAL, SDOFST);
 753                         dev_dbg(ccdc_cfg.dev, "\nWriting %x to SDOFST...\n",
 754                                 CCDC_SDOFST_INTERLACE_NORMAL);
 755                 }
 756         } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
 757                 if (params->image_invert_enable) {
 758                         /* For progessive inverse mode */
 759                         regw(CCDC_SDOFST_PROGRESSIVE_INVERSE, SDOFST);
 760                         dev_dbg(ccdc_cfg.dev, "\nWriting %x to SDOFST...\n",
 761                                 CCDC_SDOFST_PROGRESSIVE_INVERSE);
 762                 } else {
 763                         /* For progessive non inverse mode */
 764                         regw(CCDC_SDOFST_PROGRESSIVE_NORMAL, SDOFST);
 765                         dev_dbg(ccdc_cfg.dev, "\nWriting %x to SDOFST...\n",
 766                                 CCDC_SDOFST_PROGRESSIVE_NORMAL);
 767                 }
 768         }
 769         dev_dbg(ccdc_cfg.dev, "\nend of ccdc_config_raw...");
 770         return 0;
 771 }
 772
 773 static int ccdc_configure(void)
 774 {
 775         if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 776                 return ccdc_config_raw();
 777         else
 778                 ccdc_config_ycbcr();
 779         return 0;
 780 }
 781
 782 static int ccdc_set_buftype(enum ccdc_buftype buf_type)
 783 {
 784         if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 785                 ccdc_cfg.bayer.buf_type = buf_type;
 786         else
 787                 ccdc_cfg.ycbcr.buf_type = buf_type;
 788         return 0;
 789 }
 790 static enum ccdc_buftype ccdc_get_buftype(void)
 791 {
 792         if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 793                 return ccdc_cfg.bayer.buf_type;
 794         return ccdc_cfg.ycbcr.buf_type;
 795 }
 796
 797 static int ccdc_enum_pix(u32 *pix, int i)
 798 {
 799         int ret = -EINVAL;
 800         if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
 801                 if (i < ARRAY_SIZE(ccdc_raw_bayer_pix_formats)) {
 802                         *pix = ccdc_raw_bayer_pix_formats[i];
 803                         ret = 0;
 804                 }
 805         } else {
 806                 if (i < ARRAY_SIZE(ccdc_raw_yuv_pix_formats)) {
 807                         *pix = ccdc_raw_yuv_pix_formats[i];
 808                         ret = 0;
 809                 }
 810         }
 811         return ret;
 812 }
 813
 814 static int ccdc_set_pixel_format(u32 pixfmt)
 815 {
 816         struct ccdc_a_law *alaw = &ccdc_cfg.bayer.config_params.alaw;
 817
 818         if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
 819                 ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
 820                 if (pixfmt == V4L2_PIX_FMT_SBGGR8)
 821                         alaw->enable = 1;
 822                 else if (pixfmt != V4L2_PIX_FMT_SBGGR16)
 823                         return -EINVAL;
 824         } else {
 825                 if (pixfmt == V4L2_PIX_FMT_YUYV)
 826                         ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR;
 827                 else if (pixfmt == V4L2_PIX_FMT_UYVY)
 828                         ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
 829                 else
 830                         return -EINVAL;
 831         }
 832         return 0;
 833 }
 834 static u32 ccdc_get_pixel_format(void)
 835 {
 836         struct ccdc_a_law *alaw = &ccdc_cfg.bayer.config_params.alaw;
 837         u32 pixfmt;
 838
 839         if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 840                 if (alaw->enable)
 841                         pixfmt = V4L2_PIX_FMT_SBGGR8;
 842                 else
 843                         pixfmt = V4L2_PIX_FMT_SBGGR16;
 844         else {
 845                 if (ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR)
 846                         pixfmt = V4L2_PIX_FMT_YUYV;
 847                 else
 848                         pixfmt = V4L2_PIX_FMT_UYVY;
 849         }
 850         return pixfmt;
 851 }
 852 static int ccdc_set_image_window(struct v4l2_rect *win)
 853 {
 854         if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 855                 ccdc_cfg.bayer.win = *win;
 856         else
 857                 ccdc_cfg.ycbcr.win = *win;
 858         return 0;
 859 }
 860
 861 static void ccdc_get_image_window(struct v4l2_rect *win)
 862 {
 863         if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 864                 *win = ccdc_cfg.bayer.win;
 865         else
 866                 *win = ccdc_cfg.ycbcr.win;
 867 }
 868
 869 static unsigned int ccdc_get_line_length(void)
 870 {
 871         struct ccdc_config_params_raw *config_params =
 872                                 &ccdc_cfg.bayer.config_params;
 873         unsigned int len;
 874
 875         if (ccdc_cfg.if_type == VPFE_RAW_BAYER) {
 876                 if ((config_params->alaw.enable) ||
 877                     (config_params->data_sz == CCDC_DATA_8BITS))
 878                         len = ccdc_cfg.bayer.win.width;
 879                 else
 880                         len = ccdc_cfg.bayer.win.width * 2;
 881         } else
 882                 len = ccdc_cfg.ycbcr.win.width * 2;
 883         return ALIGN(len, 32);
 884 }
 885
 886 static int ccdc_set_frame_format(enum ccdc_frmfmt frm_fmt)
 887 {
 888         if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 889                 ccdc_cfg.bayer.frm_fmt = frm_fmt;
 890         else
 891                 ccdc_cfg.ycbcr.frm_fmt = frm_fmt;
 892         return 0;
 893 }
 894
 895 static enum ccdc_frmfmt ccdc_get_frame_format(void)
 896 {
 897         if (ccdc_cfg.if_type == VPFE_RAW_BAYER)
 898                 return ccdc_cfg.bayer.frm_fmt;
 899         else
 900                 return ccdc_cfg.ycbcr.frm_fmt;
 901 }
 902
 903 static int ccdc_getfid(void)
 904 {
 905         return  (regr(MODESET) >> 15) & 1;
 906 }
 907
 908 /* misc operations */
 909 static inline void ccdc_setfbaddr(unsigned long addr)
 910 {
 911         regw((addr >> 21) & 0x007f, STADRH);
 912         regw((addr >> 5) & 0x0ffff, STADRL);
 913 }
 914
 915 static int ccdc_set_hw_if_params(struct vpfe_hw_if_param *params)
 916 {
 917         ccdc_cfg.if_type = params->if_type;
 918
 919         switch (params->if_type) {
 920         case VPFE_BT656:
 921         case VPFE_YCBCR_SYNC_16:
 922         case VPFE_YCBCR_SYNC_8:
 923                 ccdc_cfg.ycbcr.vd_pol = params->vdpol;
 924                 ccdc_cfg.ycbcr.hd_pol = params->hdpol;
 925                 break;
 926         default:
 927                 /* TODO add support for raw bayer here */
 928                 return -EINVAL;
 929         }
 930         return 0;
 931 }
 932
 933 static struct ccdc_hw_device ccdc_hw_dev = {
 934         .name = "DM355 CCDC",
 935         .owner = THIS_MODULE,
 936         .hw_ops = {
 937                 .open = ccdc_open,
 938                 .close = ccdc_close,
 939                 .enable = ccdc_enable,
 940                 .enable_out_to_sdram = ccdc_enable_output_to_sdram,
 941                 .set_hw_if_params = ccdc_set_hw_if_params,
 942                 .set_params = ccdc_set_params,
 943                 .configure = ccdc_configure,
 944                 .set_buftype = ccdc_set_buftype,
 945                 .get_buftype = ccdc_get_buftype,
 946                 .enum_pix = ccdc_enum_pix,
 947                 .set_pixel_format = ccdc_set_pixel_format,
 948                 .get_pixel_format = ccdc_get_pixel_format,
 949                 .set_frame_format = ccdc_set_frame_format,
 950                 .get_frame_format = ccdc_get_frame_format,
 951                 .set_image_window = ccdc_set_image_window,
 952                 .get_image_window = ccdc_get_image_window,
 953                 .get_line_length = ccdc_get_line_length,
 954                 .setfbaddr = ccdc_setfbaddr,
 955                 .getfid = ccdc_getfid,
 956         },
 957 };
 958
 959 static int dm355_ccdc_probe(struct platform_device *pdev)
 960 {
 961         void (*setup_pinmux)(void);
 962         struct resource *res;
 963         int status = 0;
 964
 965         /*
 966          * first try to register with vpfe. If not correct platform, then we
 967          * don't have to iomap
 968          */
 969         status = vpfe_register_ccdc_device(&ccdc_hw_dev);
 970         if (status < 0)
 971                 return status;
 972
 973         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 974         if (!res) {
 975                 status = -ENODEV;
 976                 goto fail_nores;
 977         }
 978
 979         res = request_mem_region(res->start, resource_size(res), res->name);
 980         if (!res) {
 981                 status = -EBUSY;
 982                 goto fail_nores;
 983         }
 984
 985         ccdc_cfg.base_addr = ioremap_nocache(res->start, resource_size(res));
 986         if (!ccdc_cfg.base_addr) {
 987                 status = -ENOMEM;
 988                 goto fail_nomem;
 989         }
 990
 991         /* Platform data holds setup_pinmux function ptr */
 992         if (NULL == pdev->dev.platform_data) {
 993                 status = -ENODEV;
 994                 goto fail_nomap;
 995         }
 996         setup_pinmux = pdev->dev.platform_data;
 997         /*
 998          * setup Mux configuration for ccdc which may be different for
 999          * different SoCs using this CCDC
1000          */
1001         setup_pinmux();
1002         ccdc_cfg.dev = &pdev->dev;
1003         printk(KERN_NOTICE "%s is registered with vpfe.\n", ccdc_hw_dev.name);
1004         return 0;
1005 fail_nomap:
1006         iounmap(ccdc_cfg.base_addr);
1007 fail_nomem:
1008         release_mem_region(res->start, resource_size(res));
1009 fail_nores:
1010         vpfe_unregister_ccdc_device(&ccdc_hw_dev);
1011         return status;
1012 }
1013
1014 static int dm355_ccdc_remove(struct platform_device *pdev)
1015 {
1016         struct resource *res;
1017
1018         iounmap(ccdc_cfg.base_addr);
1019         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1020         if (res)
1021                 release_mem_region(res->start, resource_size(res));
1022         vpfe_unregister_ccdc_device(&ccdc_hw_dev);
1023         return 0;
1024 }
1025
1026 static struct platform_driver dm355_ccdc_driver = {
1027         .driver = {
1028                 .name   = "dm355_ccdc",
1029         },
1030         .remove = dm355_ccdc_remove,
1031         .probe = dm355_ccdc_probe,
1032 };
1033
1034 module_platform_driver(dm355_ccdc_driver);