drivers/staging/media/davinci_vpfe/dm365_ipipeif.c

   1 /*
   2  * Copyright (C) 2012 Texas Instruments Inc
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation version 2.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16  *
  17  * Contributors:
  18  *      Manjunath Hadli <manjunath.hadli@ti.com>
  19  *      Prabhakar Lad <prabhakar.lad@ti.com>
  20  */
  21
  22 #include "dm365_ipipeif.h"
  23 #include "vpfe_mc_capture.h"
  24
  25 static const unsigned int ipipeif_input_fmts[] = {
  26         MEDIA_BUS_FMT_UYVY8_2X8,
  27         MEDIA_BUS_FMT_SGRBG12_1X12,
  28         MEDIA_BUS_FMT_Y8_1X8,
  29         MEDIA_BUS_FMT_UV8_1X8,
  30         MEDIA_BUS_FMT_YDYUYDYV8_1X16,
  31         MEDIA_BUS_FMT_SBGGR8_1X8,
  32 };
  33
  34 static const unsigned int ipipeif_output_fmts[] = {
  35         MEDIA_BUS_FMT_UYVY8_2X8,
  36         MEDIA_BUS_FMT_SGRBG12_1X12,
  37         MEDIA_BUS_FMT_Y8_1X8,
  38         MEDIA_BUS_FMT_UV8_1X8,
  39         MEDIA_BUS_FMT_YDYUYDYV8_1X16,
  40         MEDIA_BUS_FMT_SBGGR8_1X8,
  41         MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8,
  42         MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8,
  43 };
  44
  45 static int
  46 ipipeif_get_pack_mode(u32 in_pix_fmt)
  47 {
  48         switch (in_pix_fmt) {
  49         case MEDIA_BUS_FMT_SBGGR8_1X8:
  50         case MEDIA_BUS_FMT_Y8_1X8:
  51         case MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8:
  52         case MEDIA_BUS_FMT_UV8_1X8:
  53                 return IPIPEIF_5_1_PACK_8_BIT;
  54
  55         case MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8:
  56                 return IPIPEIF_5_1_PACK_8_BIT_A_LAW;
  57
  58         case MEDIA_BUS_FMT_SGRBG12_1X12:
  59                 return IPIPEIF_5_1_PACK_16_BIT;
  60
  61         case MEDIA_BUS_FMT_SBGGR12_1X12:
  62                 return IPIPEIF_5_1_PACK_12_BIT;
  63
  64         default:
  65                 return IPIPEIF_5_1_PACK_16_BIT;
  66         }
  67 }
  68
  69 static inline u32 ipipeif_read(void __iomem *addr, u32 offset)
  70 {
  71         return readl(addr + offset);
  72 }
  73
  74 static inline void ipipeif_write(u32 val, void __iomem *addr, u32 offset)
  75 {
  76         writel(val, addr + offset);
  77 }
  78
  79 static void ipipeif_config_dpc(void __iomem *addr, struct ipipeif_dpc *dpc)
  80 {
  81         u32 val = 0;
  82
  83         if (dpc->en) {
  84                 val = (dpc->en & 1) << IPIPEIF_DPC2_EN_SHIFT;
  85                 val |= dpc->thr & IPIPEIF_DPC2_THR_MASK;
  86         }
  87         ipipeif_write(val, addr, IPIPEIF_DPC2);
  88 }
  89
  90 #define IPIPEIF_MODE_CONTINUOUS                 0
  91 #define IPIPEIF_MODE_ONE_SHOT                   1
  92
  93 static int get_oneshot_mode(enum ipipeif_input_entity input)
  94 {
  95         if (input == IPIPEIF_INPUT_MEMORY)
  96                 return IPIPEIF_MODE_ONE_SHOT;
  97         if (input == IPIPEIF_INPUT_ISIF)
  98                 return IPIPEIF_MODE_CONTINUOUS;
  99
 100         return -EINVAL;
 101 }
 102
 103 static int
 104 ipipeif_get_cfg_src1(struct vpfe_ipipeif_device *ipipeif)
 105 {
 106         struct v4l2_mbus_framefmt *informat;
 107
 108         informat = &ipipeif->formats[IPIPEIF_PAD_SINK];
 109         if (ipipeif->input == IPIPEIF_INPUT_MEMORY &&
 110            (informat->code == MEDIA_BUS_FMT_Y8_1X8 ||
 111             informat->code == MEDIA_BUS_FMT_UV8_1X8))
 112                 return IPIPEIF_CCDC;
 113
 114         return IPIPEIF_SRC1_PARALLEL_PORT;
 115 }
 116
 117 static int
 118 ipipeif_get_data_shift(struct vpfe_ipipeif_device *ipipeif)
 119 {
 120         struct v4l2_mbus_framefmt *informat;
 121
 122         informat = &ipipeif->formats[IPIPEIF_PAD_SINK];
 123
 124         switch (informat->code) {
 125         case MEDIA_BUS_FMT_SGRBG12_1X12:
 126                 return IPIPEIF_5_1_BITS11_0;
 127
 128         case MEDIA_BUS_FMT_Y8_1X8:
 129         case MEDIA_BUS_FMT_UV8_1X8:
 130                 return IPIPEIF_5_1_BITS11_0;
 131
 132         default:
 133                 return IPIPEIF_5_1_BITS7_0;
 134         }
 135 }
 136
 137 static enum ipipeif_input_source
 138 ipipeif_get_source(struct vpfe_ipipeif_device *ipipeif)
 139 {
 140         struct v4l2_mbus_framefmt *informat;
 141
 142         informat = &ipipeif->formats[IPIPEIF_PAD_SINK];
 143         if (ipipeif->input == IPIPEIF_INPUT_ISIF)
 144                 return IPIPEIF_CCDC;
 145
 146         if (informat->code == MEDIA_BUS_FMT_UYVY8_2X8)
 147                 return IPIPEIF_SDRAM_YUV;
 148
 149         return IPIPEIF_SDRAM_RAW;
 150 }
 151
 152 void vpfe_ipipeif_ss_buffer_isr(struct vpfe_ipipeif_device *ipipeif)
 153 {
 154         struct vpfe_video_device *video_in = &ipipeif->video_in;
 155
 156         if (ipipeif->input != IPIPEIF_INPUT_MEMORY)
 157                 return;
 158
 159         spin_lock(&video_in->dma_queue_lock);
 160         vpfe_video_process_buffer_complete(video_in);
 161         video_in->state = VPFE_VIDEO_BUFFER_NOT_QUEUED;
 162         vpfe_video_schedule_next_buffer(video_in);
 163         spin_unlock(&video_in->dma_queue_lock);
 164 }
 165
 166 int vpfe_ipipeif_decimation_enabled(struct vpfe_device *vpfe_dev)
 167 {
 168         struct vpfe_ipipeif_device *ipipeif = &vpfe_dev->vpfe_ipipeif;
 169
 170         return ipipeif->config.decimation;
 171 }
 172
 173 int vpfe_ipipeif_get_rsz(struct vpfe_device *vpfe_dev)
 174 {
 175         struct vpfe_ipipeif_device *ipipeif = &vpfe_dev->vpfe_ipipeif;
 176
 177         return ipipeif->config.rsz;
 178 }
 179
 180 #define RD_DATA_15_2            0x7
 181
 182 /*
 183  * ipipeif_hw_setup() - This function sets up IPIPEIF
 184  * @sd: pointer to v4l2 subdev structure
 185  * return -EINVAL or zero on success
 186  */
 187 static int ipipeif_hw_setup(struct v4l2_subdev *sd)
 188 {
 189         struct vpfe_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
 190         struct v4l2_mbus_framefmt *informat, *outformat;
 191         struct ipipeif_params params = ipipeif->config;
 192         enum ipipeif_input_source ipipeif_source;
 193         u32 isif_port_if;
 194         void __iomem *ipipeif_base_addr;
 195         unsigned int val;
 196         int data_shift;
 197         int pack_mode;
 198         int source1;
 199         int tmp;
 200
 201         ipipeif_base_addr = ipipeif->ipipeif_base_addr;
 202
 203         /* Enable clock to IPIPEIF and IPIPE */
 204         vpss_enable_clock(VPSS_IPIPEIF_CLOCK, 1);
 205
 206         informat = &ipipeif->formats[IPIPEIF_PAD_SINK];
 207         outformat = &ipipeif->formats[IPIPEIF_PAD_SOURCE];
 208
 209         /* Combine all the fields to make CFG1 register of IPIPEIF */
 210         tmp = val = get_oneshot_mode(ipipeif->input);
 211         if (tmp < 0) {
 212                 dev_err(&sd->devnode->dev, "ipipeif: links setup required");
 213                 return -EINVAL;
 214         }
 215         val <<= ONESHOT_SHIFT;
 216
 217         ipipeif_source = ipipeif_get_source(ipipeif);
 218         val |= ipipeif_source << INPSRC_SHIFT;
 219
 220         val |= params.clock_select << CLKSEL_SHIFT;
 221         val |= params.avg_filter << AVGFILT_SHIFT;
 222         val |= params.decimation << DECIM_SHIFT;
 223
 224         pack_mode = ipipeif_get_pack_mode(informat->code);
 225         val |= pack_mode << PACK8IN_SHIFT;
 226
 227         source1 = ipipeif_get_cfg_src1(ipipeif);
 228         val |= source1 << INPSRC1_SHIFT;
 229
 230         data_shift = ipipeif_get_data_shift(ipipeif);
 231         if (ipipeif_source != IPIPEIF_SDRAM_YUV)
 232                 val |= data_shift << DATASFT_SHIFT;
 233         else
 234                 val &= ~(RD_DATA_15_2 << DATASFT_SHIFT);
 235
 236         ipipeif_write(val, ipipeif_base_addr, IPIPEIF_CFG1);
 237
 238         switch (ipipeif_source) {
 239         case IPIPEIF_CCDC:
 240                 ipipeif_write(ipipeif->gain, ipipeif_base_addr, IPIPEIF_GAIN);
 241                 break;
 242
 243         case IPIPEIF_SDRAM_RAW:
 244         case IPIPEIF_CCDC_DARKFM:
 245                 ipipeif_write(ipipeif->gain, ipipeif_base_addr, IPIPEIF_GAIN);
 246                 /* fall through */
 247         case IPIPEIF_SDRAM_YUV:
 248                 val |= data_shift << DATASFT_SHIFT;
 249                 ipipeif_write(params.ppln, ipipeif_base_addr, IPIPEIF_PPLN);
 250                 ipipeif_write(params.lpfr, ipipeif_base_addr, IPIPEIF_LPFR);
 251                 ipipeif_write(informat->width, ipipeif_base_addr, IPIPEIF_HNUM);
 252                 ipipeif_write(informat->height,
 253                               ipipeif_base_addr, IPIPEIF_VNUM);
 254                 break;
 255
 256         default:
 257                 return -EINVAL;
 258         }
 259
 260         /*check if decimation is enable or not */
 261         if (params.decimation)
 262                 ipipeif_write(params.rsz, ipipeif_base_addr, IPIPEIF_RSZ);
 263
 264         /* Setup sync alignment and initial rsz position */
 265         val = params.if_5_1.align_sync & 1;
 266         val <<= IPIPEIF_INIRSZ_ALNSYNC_SHIFT;
 267         val |= params.if_5_1.rsz_start & IPIPEIF_INIRSZ_MASK;
 268         ipipeif_write(val, ipipeif_base_addr, IPIPEIF_INIRSZ);
 269         isif_port_if = informat->code;
 270
 271         if (isif_port_if == MEDIA_BUS_FMT_Y8_1X8)
 272                 isif_port_if = MEDIA_BUS_FMT_YUYV8_1X16;
 273         else if (isif_port_if == MEDIA_BUS_FMT_UV8_1X8)
 274                 isif_port_if = MEDIA_BUS_FMT_SGRBG12_1X12;
 275
 276         /* Enable DPCM decompression */
 277         switch (ipipeif_source) {
 278         case IPIPEIF_SDRAM_RAW:
 279                 val = 0;
 280                 if (outformat->code == MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8) {
 281                         val = 1;
 282                         val |= (IPIPEIF_DPCM_8BIT_10BIT & 1) <<
 283                                 IPIPEIF_DPCM_BITS_SHIFT;
 284                         val |= (ipipeif->dpcm_predictor & 1) <<
 285                                 IPIPEIF_DPCM_PRED_SHIFT;
 286                 }
 287                 ipipeif_write(val, ipipeif_base_addr, IPIPEIF_DPCM);
 288
 289                 /* set DPC */
 290                 ipipeif_config_dpc(ipipeif_base_addr, &params.if_5_1.dpc);
 291
 292                 ipipeif_write(params.if_5_1.clip,
 293                               ipipeif_base_addr, IPIPEIF_OCLIP);
 294
 295                 /* fall through for SDRAM YUV mode */
 296                 /* configure CFG2 */
 297                 val = ipipeif_read(ipipeif_base_addr, IPIPEIF_CFG2);
 298                 switch (isif_port_if) {
 299                 case MEDIA_BUS_FMT_YUYV8_1X16:
 300                 case MEDIA_BUS_FMT_UYVY8_2X8:
 301                 case MEDIA_BUS_FMT_Y8_1X8:
 302                         RESETBIT(val, IPIPEIF_CFG2_YUV8_SHIFT);
 303                         SETBIT(val, IPIPEIF_CFG2_YUV16_SHIFT);
 304                         ipipeif_write(val, ipipeif_base_addr, IPIPEIF_CFG2);
 305                         break;
 306
 307                 default:
 308                         RESETBIT(val, IPIPEIF_CFG2_YUV8_SHIFT);
 309                         RESETBIT(val, IPIPEIF_CFG2_YUV16_SHIFT);
 310                         ipipeif_write(val, ipipeif_base_addr, IPIPEIF_CFG2);
 311                         break;
 312                 }
 313                 /* fall through */
 314
 315         case IPIPEIF_SDRAM_YUV:
 316                 /* Set clock divider */
 317                 if (params.clock_select == IPIPEIF_SDRAM_CLK) {
 318                         val = ipipeif_read(ipipeif_base_addr, IPIPEIF_CLKDIV);
 319                         val |= (params.if_5_1.clk_div.m - 1) <<
 320                                 IPIPEIF_CLKDIV_M_SHIFT;
 321                         val |= (params.if_5_1.clk_div.n - 1);
 322                         ipipeif_write(val, ipipeif_base_addr, IPIPEIF_CLKDIV);
 323                 }
 324                 break;
 325
 326         case IPIPEIF_CCDC:
 327         case IPIPEIF_CCDC_DARKFM:
 328                 /* set DPC */
 329                 ipipeif_config_dpc(ipipeif_base_addr, &params.if_5_1.dpc);
 330
 331                 /* Set DF gain & threshold control */
 332                 val = 0;
 333                 if (params.if_5_1.df_gain_en) {
 334                         val = params.if_5_1.df_gain_thr &
 335                                 IPIPEIF_DF_GAIN_THR_MASK;
 336                         ipipeif_write(val, ipipeif_base_addr, IPIPEIF_DFSGTH);
 337                         val = (params.if_5_1.df_gain_en & 1) <<
 338                                 IPIPEIF_DF_GAIN_EN_SHIFT;
 339                         val |= params.if_5_1.df_gain &
 340                                 IPIPEIF_DF_GAIN_MASK;
 341                 }
 342                 ipipeif_write(val, ipipeif_base_addr, IPIPEIF_DFSGVL);
 343                 /* configure CFG2 */
 344                 val = VPFE_PINPOL_POSITIVE << IPIPEIF_CFG2_HDPOL_SHIFT;
 345                 val |= VPFE_PINPOL_POSITIVE << IPIPEIF_CFG2_VDPOL_SHIFT;
 346
 347                 switch (isif_port_if) {
 348                 case MEDIA_BUS_FMT_YUYV8_1X16:
 349                 case MEDIA_BUS_FMT_YUYV10_1X20:
 350                         RESETBIT(val, IPIPEIF_CFG2_YUV8_SHIFT);
 351                         SETBIT(val, IPIPEIF_CFG2_YUV16_SHIFT);
 352                         break;
 353
 354                 case MEDIA_BUS_FMT_YUYV8_2X8:
 355                 case MEDIA_BUS_FMT_UYVY8_2X8:
 356                 case MEDIA_BUS_FMT_Y8_1X8:
 357                 case MEDIA_BUS_FMT_YUYV10_2X10:
 358                         SETBIT(val, IPIPEIF_CFG2_YUV8_SHIFT);
 359                         SETBIT(val, IPIPEIF_CFG2_YUV16_SHIFT);
 360                         val |= IPIPEIF_CBCR_Y << IPIPEIF_CFG2_YUV8P_SHIFT;
 361                         break;
 362
 363                 default:
 364                         /* Bayer */
 365                         ipipeif_write(params.if_5_1.clip, ipipeif_base_addr,
 366                                 IPIPEIF_OCLIP);
 367                 }
 368                 ipipeif_write(val, ipipeif_base_addr, IPIPEIF_CFG2);
 369                 break;
 370
 371         default:
 372                 return -EINVAL;
 373         }
 374
 375         return 0;
 376 }
 377
 378 static int
 379 ipipeif_set_config(struct v4l2_subdev *sd, struct ipipeif_params *config)
 380 {
 381         struct vpfe_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
 382         struct device *dev = ipipeif->subdev.v4l2_dev->dev;
 383
 384         if (!config) {
 385                 dev_err(dev, "Invalid configuration pointer\n");
 386                 return -EINVAL;
 387         }
 388
 389         ipipeif->config.clock_select = config->clock_select;
 390         ipipeif->config.ppln = config->ppln;
 391         ipipeif->config.lpfr = config->lpfr;
 392         ipipeif->config.rsz = config->rsz;
 393         ipipeif->config.decimation = config->decimation;
 394         if (ipipeif->config.decimation &&
 395            (ipipeif->config.rsz < IPIPEIF_RSZ_MIN ||
 396             ipipeif->config.rsz > IPIPEIF_RSZ_MAX)) {
 397                 dev_err(dev, "rsz range is %d to %d\n",
 398                         IPIPEIF_RSZ_MIN, IPIPEIF_RSZ_MAX);
 399                 return -EINVAL;
 400         }
 401
 402         ipipeif->config.avg_filter = config->avg_filter;
 403
 404         ipipeif->config.if_5_1.df_gain_thr = config->if_5_1.df_gain_thr;
 405         ipipeif->config.if_5_1.df_gain = config->if_5_1.df_gain;
 406         ipipeif->config.if_5_1.df_gain_en = config->if_5_1.df_gain_en;
 407
 408         ipipeif->config.if_5_1.rsz_start = config->if_5_1.rsz_start;
 409         ipipeif->config.if_5_1.align_sync = config->if_5_1.align_sync;
 410         ipipeif->config.if_5_1.clip = config->if_5_1.clip;
 411
 412         ipipeif->config.if_5_1.dpc.en = config->if_5_1.dpc.en;
 413         ipipeif->config.if_5_1.dpc.thr = config->if_5_1.dpc.thr;
 414
 415         ipipeif->config.if_5_1.clk_div.m = config->if_5_1.clk_div.m;
 416         ipipeif->config.if_5_1.clk_div.n = config->if_5_1.clk_div.n;
 417
 418         return 0;
 419 }
 420
 421 static int
 422 ipipeif_get_config(struct v4l2_subdev *sd, void *arg)
 423 {
 424         struct vpfe_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
 425         struct ipipeif_params *config = arg;
 426         struct device *dev = ipipeif->subdev.v4l2_dev->dev;
 427
 428         if (!arg) {
 429                 dev_err(dev, "Invalid configuration pointer\n");
 430                 return -EINVAL;
 431         }
 432
 433         config->clock_select = ipipeif->config.clock_select;
 434         config->ppln = ipipeif->config.ppln;
 435         config->lpfr = ipipeif->config.lpfr;
 436         config->rsz = ipipeif->config.rsz;
 437         config->decimation = ipipeif->config.decimation;
 438         config->avg_filter = ipipeif->config.avg_filter;
 439
 440         config->if_5_1.df_gain_thr = ipipeif->config.if_5_1.df_gain_thr;
 441         config->if_5_1.df_gain = ipipeif->config.if_5_1.df_gain;
 442         config->if_5_1.df_gain_en = ipipeif->config.if_5_1.df_gain_en;
 443
 444         config->if_5_1.rsz_start = ipipeif->config.if_5_1.rsz_start;
 445         config->if_5_1.align_sync = ipipeif->config.if_5_1.align_sync;
 446         config->if_5_1.clip = ipipeif->config.if_5_1.clip;
 447
 448         config->if_5_1.dpc.en = ipipeif->config.if_5_1.dpc.en;
 449         config->if_5_1.dpc.thr = ipipeif->config.if_5_1.dpc.thr;
 450
 451         config->if_5_1.clk_div.m = ipipeif->config.if_5_1.clk_div.m;
 452         config->if_5_1.clk_div.n = ipipeif->config.if_5_1.clk_div.n;
 453
 454         return 0;
 455 }
 456
 457 /*
 458  * ipipeif_ioctl() - Handle ipipeif module private ioctl's
 459  * @sd: pointer to v4l2 subdev structure
 460  * @cmd: configuration command
 461  * @arg: configuration argument
 462  */
 463 static long ipipeif_ioctl(struct v4l2_subdev *sd,
 464                           unsigned int cmd, void *arg)
 465 {
 466         struct ipipeif_params *config = arg;
 467         int ret = -ENOIOCTLCMD;
 468
 469         switch (cmd) {
 470         case VIDIOC_VPFE_IPIPEIF_S_CONFIG:
 471                 ret = ipipeif_set_config(sd, config);
 472                 break;
 473
 474         case VIDIOC_VPFE_IPIPEIF_G_CONFIG:
 475                 ret = ipipeif_get_config(sd, arg);
 476                 break;
 477         }
 478         return ret;
 479 }
 480
 481 /*
 482  * ipipeif_s_ctrl() - Handle set control subdev method
 483  * @ctrl: pointer to v4l2 control structure
 484  */
 485 static int ipipeif_s_ctrl(struct v4l2_ctrl *ctrl)
 486 {
 487         struct vpfe_ipipeif_device *ipipeif =
 488                 container_of(ctrl->handler, struct vpfe_ipipeif_device, ctrls);
 489
 490         switch (ctrl->id) {
 491         case VPFE_CID_DPCM_PREDICTOR:
 492                 ipipeif->dpcm_predictor = ctrl->val;
 493                 break;
 494
 495         case V4L2_CID_GAIN:
 496                 ipipeif->gain = ctrl->val;
 497                 break;
 498
 499         default:
 500                 return -EINVAL;
 501         }
 502
 503         return 0;
 504 }
 505
 506 #define ENABLE_IPIPEIF          0x1
 507
 508 void vpfe_ipipeif_enable(struct vpfe_device *vpfe_dev)
 509 {
 510         struct vpfe_ipipeif_device *ipipeif = &vpfe_dev->vpfe_ipipeif;
 511         void __iomem *ipipeif_base_addr = ipipeif->ipipeif_base_addr;
 512         unsigned char val;
 513
 514         if (ipipeif->input != IPIPEIF_INPUT_MEMORY)
 515                 return;
 516
 517         do {
 518                 val = ipipeif_read(ipipeif_base_addr, IPIPEIF_ENABLE);
 519         } while (val & 0x1);
 520
 521         ipipeif_write(ENABLE_IPIPEIF, ipipeif_base_addr, IPIPEIF_ENABLE);
 522 }
 523
 524 /*
 525  * ipipeif_set_stream() - Enable/Disable streaming on ipipeif subdev
 526  * @sd: pointer to v4l2 subdev structure
 527  * @enable: 1 == Enable, 0 == Disable
 528  */
 529 static int ipipeif_set_stream(struct v4l2_subdev *sd, int enable)
 530 {
 531         struct vpfe_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
 532         struct vpfe_device *vpfe_dev = to_vpfe_device(ipipeif);
 533         int ret = 0;
 534
 535         if (!enable)
 536                 return ret;
 537
 538         ret = ipipeif_hw_setup(sd);
 539         if (!ret)
 540                 vpfe_ipipeif_enable(vpfe_dev);
 541
 542         return ret;
 543 }
 544
 545 /*
 546  * ipipeif_enum_mbus_code() - Handle pixel format enumeration
 547  * @sd: pointer to v4l2 subdev structure
 548  * @cfg: V4L2 subdev pad config
 549  * @code: pointer to v4l2_subdev_mbus_code_enum structure
 550  * return -EINVAL or zero on success
 551  */
 552 static int ipipeif_enum_mbus_code(struct v4l2_subdev *sd,
 553                                   struct v4l2_subdev_pad_config *cfg,
 554                         struct v4l2_subdev_mbus_code_enum *code)
 555 {
 556         switch (code->pad) {
 557         case IPIPEIF_PAD_SINK:
 558                 if (code->index >= ARRAY_SIZE(ipipeif_input_fmts))
 559                         return -EINVAL;
 560
 561                 code->code = ipipeif_input_fmts[code->index];
 562                 break;
 563
 564         case IPIPEIF_PAD_SOURCE:
 565                 if (code->index >= ARRAY_SIZE(ipipeif_output_fmts))
 566                         return -EINVAL;
 567
 568                 code->code = ipipeif_output_fmts[code->index];
 569                 break;
 570
 571         default:
 572                 return -EINVAL;
 573         }
 574
 575         return 0;
 576 }
 577
 578 /*
 579  * ipipeif_get_format() - Handle get format by pads subdev method
 580  * @sd: pointer to v4l2 subdev structure
 581  * @cfg: V4L2 subdev pad config
 582  * @fmt: pointer to v4l2 subdev format structure
 583  */
 584 static int
 585 ipipeif_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
 586                 struct v4l2_subdev_format *fmt)
 587 {
 588         struct vpfe_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
 589
 590         if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
 591                 fmt->format = ipipeif->formats[fmt->pad];
 592         else
 593                 fmt->format = *(v4l2_subdev_get_try_format(sd, cfg, fmt->pad));
 594
 595         return 0;
 596 }
 597
 598 #define MIN_OUT_WIDTH                   32
 599 #define MIN_OUT_HEIGHT                  32
 600
 601 /*
 602  * ipipeif_try_format() - Handle try format by pad subdev method
 603  * @ipipeif: VPFE ipipeif device.
 604  * @cfg: V4L2 subdev pad config
 605  * @pad: pad num.
 606  * @fmt: pointer to v4l2 format structure.
 607  * @which : wanted subdev format
 608  */
 609 static void
 610 ipipeif_try_format(struct vpfe_ipipeif_device *ipipeif,
 611                    struct v4l2_subdev_pad_config *cfg, unsigned int pad,
 612                    struct v4l2_mbus_framefmt *fmt,
 613                    enum v4l2_subdev_format_whence which)
 614 {
 615         unsigned int max_out_height;
 616         unsigned int max_out_width;
 617         unsigned int i;
 618
 619         max_out_width = IPIPE_MAX_OUTPUT_WIDTH_A;
 620         max_out_height = IPIPE_MAX_OUTPUT_HEIGHT_A;
 621
 622         if (pad == IPIPEIF_PAD_SINK) {
 623                 for (i = 0; i < ARRAY_SIZE(ipipeif_input_fmts); i++)
 624                         if (fmt->code == ipipeif_input_fmts[i])
 625                                 break;
 626
 627                 /* If not found, use SBGGR10 as default */
 628                 if (i >= ARRAY_SIZE(ipipeif_input_fmts))
 629                         fmt->code = MEDIA_BUS_FMT_SGRBG12_1X12;
 630         } else if (pad == IPIPEIF_PAD_SOURCE) {
 631                 for (i = 0; i < ARRAY_SIZE(ipipeif_output_fmts); i++)
 632                         if (fmt->code == ipipeif_output_fmts[i])
 633                                 break;
 634
 635                 /* If not found, use UYVY as default */
 636                 if (i >= ARRAY_SIZE(ipipeif_output_fmts))
 637                         fmt->code = MEDIA_BUS_FMT_UYVY8_2X8;
 638         }
 639
 640         fmt->width = clamp_t(u32, fmt->width, MIN_OUT_HEIGHT, max_out_width);
 641         fmt->height = clamp_t(u32, fmt->height, MIN_OUT_WIDTH, max_out_height);
 642 }
 643
 644 static int
 645 ipipeif_enum_frame_size(struct v4l2_subdev *sd,
 646                         struct v4l2_subdev_pad_config *cfg,
 647                         struct v4l2_subdev_frame_size_enum *fse)
 648 {
 649         struct vpfe_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
 650         struct v4l2_mbus_framefmt format;
 651
 652         if (fse->index != 0)
 653                 return -EINVAL;
 654
 655         format.code = fse->code;
 656         format.width = 1;
 657         format.height = 1;
 658         ipipeif_try_format(ipipeif, cfg, fse->pad, &format, fse->which);
 659         fse->min_width = format.width;
 660         fse->min_height = format.height;
 661
 662         if (format.code != fse->code)
 663                 return -EINVAL;
 664
 665         format.code = fse->code;
 666         format.width = -1;
 667         format.height = -1;
 668         ipipeif_try_format(ipipeif, cfg, fse->pad, &format, fse->which);
 669         fse->max_width = format.width;
 670         fse->max_height = format.height;
 671
 672         return 0;
 673 }
 674
 675 /*
 676  * __ipipeif_get_format() - helper function for getting ipipeif format
 677  * @ipipeif: pointer to ipipeif private structure.
 678  * @cfg: V4L2 subdev pad config
 679  * @pad: pad number.
 680  * @which: wanted subdev format.
 681  *
 682  */
 683 static struct v4l2_mbus_framefmt *
 684 __ipipeif_get_format(struct vpfe_ipipeif_device *ipipeif,
 685                        struct v4l2_subdev_pad_config *cfg, unsigned int pad,
 686                        enum v4l2_subdev_format_whence which)
 687 {
 688         if (which == V4L2_SUBDEV_FORMAT_TRY)
 689                 return v4l2_subdev_get_try_format(&ipipeif->subdev, cfg, pad);
 690
 691         return &ipipeif->formats[pad];
 692 }
 693
 694 /*
 695  * ipipeif_set_format() - Handle set format by pads subdev method
 696  * @sd: pointer to v4l2 subdev structure
 697  * @cfg: V4L2 subdev pad config
 698  * @fmt: pointer to v4l2 subdev format structure
 699  * return -EINVAL or zero on success
 700  */
 701 static int
 702 ipipeif_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
 703                 struct v4l2_subdev_format *fmt)
 704 {
 705         struct vpfe_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
 706         struct v4l2_mbus_framefmt *format;
 707
 708         format = __ipipeif_get_format(ipipeif, cfg, fmt->pad, fmt->which);
 709         if (format == NULL)
 710                 return -EINVAL;
 711
 712         ipipeif_try_format(ipipeif, cfg, fmt->pad, &fmt->format, fmt->which);
 713         *format = fmt->format;
 714
 715         if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
 716                 return 0;
 717
 718         if (fmt->pad == IPIPEIF_PAD_SINK &&
 719             ipipeif->input != IPIPEIF_INPUT_NONE)
 720                 ipipeif->formats[fmt->pad] = fmt->format;
 721         else if (fmt->pad == IPIPEIF_PAD_SOURCE &&
 722                  ipipeif->output != IPIPEIF_OUTPUT_NONE)
 723                 ipipeif->formats[fmt->pad] = fmt->format;
 724         else
 725                 return -EINVAL;
 726
 727         return 0;
 728 }
 729
 730 static void ipipeif_set_default_config(struct vpfe_ipipeif_device *ipipeif)
 731 {
 732 #define WIDTH_I                 640
 733 #define HEIGHT_I                480
 734
 735         const struct ipipeif_params ipipeif_defaults = {
 736                 .clock_select = IPIPEIF_SDRAM_CLK,
 737                 .ppln = WIDTH_I + 8,
 738                 .lpfr = HEIGHT_I + 10,
 739                 .rsz = 16,      /* resize ratio 16/rsz */
 740                 .decimation = IPIPEIF_DECIMATION_OFF,
 741                 .avg_filter = IPIPEIF_AVG_OFF,
 742                 .if_5_1 = {
 743                         .clk_div = {
 744                                 .m = 1, /* clock = sdram clock * (m/n) */
 745                                 .n = 6
 746                         },
 747                         .clip = 4095,
 748                 },
 749         };
 750         memcpy(&ipipeif->config, &ipipeif_defaults,
 751                sizeof(struct ipipeif_params));
 752 }
 753
 754 /*
 755  * ipipeif_init_formats() - Initialize formats on all pads
 756  * @sd: VPFE ipipeif V4L2 subdevice
 757  * @fh: V4L2 subdev file handle
 758  *
 759  * Initialize all pad formats with default values. Try formats are initialized
 760  * on the file handle.
 761  */
 762 static int
 763 ipipeif_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
 764 {
 765         struct vpfe_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
 766         struct v4l2_subdev_format format;
 767
 768         memset(&format, 0, sizeof(format));
 769         format.pad = IPIPEIF_PAD_SINK;
 770         format.which = V4L2_SUBDEV_FORMAT_TRY;
 771         format.format.code = MEDIA_BUS_FMT_SGRBG12_1X12;
 772         format.format.width = IPIPE_MAX_OUTPUT_WIDTH_A;
 773         format.format.height = IPIPE_MAX_OUTPUT_HEIGHT_A;
 774         ipipeif_set_format(sd, fh->pad, &format);
 775
 776         memset(&format, 0, sizeof(format));
 777         format.pad = IPIPEIF_PAD_SOURCE;
 778         format.which = V4L2_SUBDEV_FORMAT_TRY;
 779         format.format.code = MEDIA_BUS_FMT_UYVY8_2X8;
 780         format.format.width = IPIPE_MAX_OUTPUT_WIDTH_A;
 781         format.format.height = IPIPE_MAX_OUTPUT_HEIGHT_A;
 782         ipipeif_set_format(sd, fh->pad, &format);
 783
 784         ipipeif_set_default_config(ipipeif);
 785
 786         return 0;
 787 }
 788
 789 /*
 790  * ipipeif_video_in_queue() - ipipeif video in queue
 791  * @vpfe_dev: vpfe device pointer
 792  * @addr: buffer address
 793  */
 794 static int
 795 ipipeif_video_in_queue(struct vpfe_device *vpfe_dev, unsigned long addr)
 796 {
 797         struct vpfe_ipipeif_device *ipipeif = &vpfe_dev->vpfe_ipipeif;
 798         void __iomem *ipipeif_base_addr = ipipeif->ipipeif_base_addr;
 799         unsigned int adofs;
 800         u32 val;
 801
 802         if (ipipeif->input != IPIPEIF_INPUT_MEMORY)
 803                 return -EINVAL;
 804
 805         switch (ipipeif->formats[IPIPEIF_PAD_SINK].code) {
 806         case MEDIA_BUS_FMT_Y8_1X8:
 807         case MEDIA_BUS_FMT_UV8_1X8:
 808         case MEDIA_BUS_FMT_YDYUYDYV8_1X16:
 809                 adofs = ipipeif->formats[IPIPEIF_PAD_SINK].width;
 810                 break;
 811
 812         default:
 813                 adofs = ipipeif->formats[IPIPEIF_PAD_SINK].width << 1;
 814                 break;
 815         }
 816
 817         /* adjust the line len to be a multiple of 32 */
 818         adofs += 31;
 819         adofs &= ~0x1f;
 820         val = (adofs >> 5) & IPIPEIF_ADOFS_LSB_MASK;
 821         ipipeif_write(val, ipipeif_base_addr, IPIPEIF_ADOFS);
 822
 823         /* lower sixteen bit */
 824         val = (addr >> IPIPEIF_ADDRL_SHIFT) & IPIPEIF_ADDRL_MASK;
 825         ipipeif_write(val, ipipeif_base_addr, IPIPEIF_ADDRL);
 826
 827         /* upper next seven bit */
 828         val = (addr >> IPIPEIF_ADDRU_SHIFT) & IPIPEIF_ADDRU_MASK;
 829         ipipeif_write(val, ipipeif_base_addr, IPIPEIF_ADDRU);
 830
 831         return 0;
 832 }
 833
 834 /* subdev core operations */
 835 static const struct v4l2_subdev_core_ops ipipeif_v4l2_core_ops = {
 836         .ioctl = ipipeif_ioctl,
 837 };
 838
 839 static const struct v4l2_ctrl_ops ipipeif_ctrl_ops = {
 840         .s_ctrl = ipipeif_s_ctrl,
 841 };
 842
 843 static const struct v4l2_ctrl_config vpfe_ipipeif_dpcm_pred = {
 844         .ops = &ipipeif_ctrl_ops,
 845         .id = VPFE_CID_DPCM_PREDICTOR,
 846         .name = "DPCM Predictor",
 847         .type = V4L2_CTRL_TYPE_INTEGER,
 848         .min = 0,
 849         .max = 1,
 850         .step = 1,
 851         .def = 0,
 852 };
 853
 854 /* subdev file operations */
 855 static const struct v4l2_subdev_internal_ops ipipeif_v4l2_internal_ops = {
 856         .open = ipipeif_init_formats,
 857 };
 858
 859 /* subdev video operations */
 860 static const struct v4l2_subdev_video_ops ipipeif_v4l2_video_ops = {
 861         .s_stream = ipipeif_set_stream,
 862 };
 863
 864 /* subdev pad operations */
 865 static const struct v4l2_subdev_pad_ops ipipeif_v4l2_pad_ops = {
 866         .enum_mbus_code = ipipeif_enum_mbus_code,
 867         .enum_frame_size = ipipeif_enum_frame_size,
 868         .get_fmt = ipipeif_get_format,
 869         .set_fmt = ipipeif_set_format,
 870 };
 871
 872 /* subdev operations */
 873 static const struct v4l2_subdev_ops ipipeif_v4l2_ops = {
 874         .core = &ipipeif_v4l2_core_ops,
 875         .video = &ipipeif_v4l2_video_ops,
 876         .pad = &ipipeif_v4l2_pad_ops,
 877 };
 878
 879 static const struct vpfe_video_operations video_in_ops = {
 880         .queue = ipipeif_video_in_queue,
 881 };
 882
 883 static int
 884 ipipeif_link_setup(struct media_entity *entity, const struct media_pad *local,
 885                 const struct media_pad *remote, u32 flags)
 886 {
 887         struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
 888         struct vpfe_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
 889         struct vpfe_device *vpfe = to_vpfe_device(ipipeif);
 890         unsigned int index = local->index;
 891
 892         /* FIXME: this is actually a hack! */
 893         if (is_media_entity_v4l2_subdev(remote->entity))
 894                 index |= 2 << 16;
 895
 896         switch (index) {
 897         case IPIPEIF_PAD_SINK:
 898                 /* Single shot mode */
 899                 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
 900                         ipipeif->input = IPIPEIF_INPUT_NONE;
 901                         break;
 902                 }
 903                 ipipeif->input = IPIPEIF_INPUT_MEMORY;
 904                 break;
 905
 906         case IPIPEIF_PAD_SINK | 2 << 16:
 907                 /* read from isif */
 908                 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
 909                         ipipeif->input = IPIPEIF_INPUT_NONE;
 910                         break;
 911                 }
 912                 if (ipipeif->input != IPIPEIF_INPUT_NONE)
 913                         return -EBUSY;
 914
 915                 ipipeif->input = IPIPEIF_INPUT_ISIF;
 916                 break;
 917
 918         case IPIPEIF_PAD_SOURCE | 2 << 16:
 919                 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
 920                         ipipeif->output = IPIPEIF_OUTPUT_NONE;
 921                         break;
 922                 }
 923                 if (remote->entity == &vpfe->vpfe_ipipe.subdev.entity)
 924                         /* connencted to ipipe */
 925                         ipipeif->output = IPIPEIF_OUTPUT_IPIPE;
 926                 else if (remote->entity == &vpfe->vpfe_resizer.
 927                         crop_resizer.subdev.entity)
 928                         /* connected to resizer */
 929                         ipipeif->output = IPIPEIF_OUTPUT_RESIZER;
 930                 else
 931                         return -EINVAL;
 932                 break;
 933
 934         default:
 935                 return -EINVAL;
 936         }
 937
 938         return 0;
 939 }
 940
 941 static const struct media_entity_operations ipipeif_media_ops = {
 942         .link_setup = ipipeif_link_setup,
 943 };
 944
 945 /*
 946  * vpfe_ipipeif_unregister_entities() - Unregister entity
 947  * @ipipeif - pointer to ipipeif subdevice structure.
 948  */
 949 void vpfe_ipipeif_unregister_entities(struct vpfe_ipipeif_device *ipipeif)
 950 {
 951         /* unregister video device */
 952         vpfe_video_unregister(&ipipeif->video_in);
 953
 954         /* unregister subdev */
 955         v4l2_device_unregister_subdev(&ipipeif->subdev);
 956         /* cleanup entity */
 957         media_entity_cleanup(&ipipeif->subdev.entity);
 958 }
 959
 960 int
 961 vpfe_ipipeif_register_entities(struct vpfe_ipipeif_device *ipipeif,
 962                                struct v4l2_device *vdev)
 963 {
 964         struct vpfe_device *vpfe_dev = to_vpfe_device(ipipeif);
 965         unsigned int flags;
 966         int ret;
 967
 968         /* Register the subdev */
 969         ret = v4l2_device_register_subdev(vdev, &ipipeif->subdev);
 970         if (ret < 0)
 971                 return ret;
 972
 973         ret = vpfe_video_register(&ipipeif->video_in, vdev);
 974         if (ret) {
 975                 pr_err("Failed to register ipipeif video-in device\n");
 976                 goto fail;
 977         }
 978         ipipeif->video_in.vpfe_dev = vpfe_dev;
 979
 980         flags = 0;
 981         ret = media_create_pad_link(&ipipeif->video_in.video_dev.entity, 0,
 982                                         &ipipeif->subdev.entity, 0, flags);
 983         if (ret < 0)
 984                 goto fail;
 985
 986         return 0;
 987 fail:
 988         v4l2_device_unregister_subdev(&ipipeif->subdev);
 989
 990         return ret;
 991 }
 992
 993 #define IPIPEIF_GAIN_HIGH               0x3ff
 994 #define IPIPEIF_DEFAULT_GAIN            0x200
 995
 996 int vpfe_ipipeif_init(struct vpfe_ipipeif_device *ipipeif,
 997                       struct platform_device *pdev)
 998 {
 999         struct v4l2_subdev *sd = &ipipeif->subdev;
1000         struct media_pad *pads = &ipipeif->pads[0];
1001         struct media_entity *me = &sd->entity;
1002         static resource_size_t  res_len;
1003         struct resource *res;
1004         int ret;
1005
1006         res = platform_get_resource(pdev, IORESOURCE_MEM, 3);
1007         if (!res)
1008                 return -ENOENT;
1009
1010         res_len = resource_size(res);
1011         res = request_mem_region(res->start, res_len, res->name);
1012         if (!res)
1013                 return -EBUSY;
1014
1015         ipipeif->ipipeif_base_addr = ioremap_nocache(res->start, res_len);
1016         if (!ipipeif->ipipeif_base_addr) {
1017                 ret =  -EBUSY;
1018                 goto fail;
1019         }
1020
1021         v4l2_subdev_init(sd, &ipipeif_v4l2_ops);
1022
1023         sd->internal_ops = &ipipeif_v4l2_internal_ops;
1024         strscpy(sd->name, "DAVINCI IPIPEIF", sizeof(sd->name));
1025         sd->grp_id = 1 << 16;   /* group ID for davinci subdevs */
1026
1027         v4l2_set_subdevdata(sd, ipipeif);
1028
1029         sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_HAS_DEVNODE;
1030         pads[IPIPEIF_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1031         pads[IPIPEIF_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1032         ipipeif->input = IPIPEIF_INPUT_NONE;
1033         ipipeif->output = IPIPEIF_OUTPUT_NONE;
1034         me->ops = &ipipeif_media_ops;
1035
1036         ret = media_entity_pads_init(me, IPIPEIF_NUM_PADS, pads);
1037         if (ret)
1038                 goto fail;
1039
1040         v4l2_ctrl_handler_init(&ipipeif->ctrls, 2);
1041         v4l2_ctrl_new_std(&ipipeif->ctrls, &ipipeif_ctrl_ops,
1042                           V4L2_CID_GAIN, 0,
1043                           IPIPEIF_GAIN_HIGH, 1, IPIPEIF_DEFAULT_GAIN);
1044         v4l2_ctrl_new_custom(&ipipeif->ctrls, &vpfe_ipipeif_dpcm_pred, NULL);
1045         v4l2_ctrl_handler_setup(&ipipeif->ctrls);
1046         sd->ctrl_handler = &ipipeif->ctrls;
1047
1048         ipipeif->video_in.ops = &video_in_ops;
1049         ipipeif->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1050         ret = vpfe_video_init(&ipipeif->video_in, "IPIPEIF");
1051         if (ret) {
1052                 pr_err("Failed to init IPIPEIF video-in device\n");
1053                 goto fail;
1054         }
1055         ipipeif_set_default_config(ipipeif);
1056         return 0;
1057 fail:
1058         release_mem_region(res->start, res_len);
1059         return ret;
1060 }
1061
1062 void
1063 vpfe_ipipeif_cleanup(struct vpfe_ipipeif_device *ipipeif,
1064                      struct platform_device *pdev)
1065 {
1066         struct resource *res;
1067
1068         v4l2_ctrl_handler_free(&ipipeif->ctrls);
1069         iounmap(ipipeif->ipipeif_base_addr);
1070         res = platform_get_resource(pdev, IORESOURCE_MEM, 3);
1071         if (res)
1072                 release_mem_region(res->start, resource_size(res));
1073
1074 }