drivers/media/platform/exynos-gsc/gsc-regs.c

   1 /*
   2  * Copyright (c) 2011 - 2012 Samsung Electronics Co., Ltd.
   3  *              http://www.samsung.com
   4  *
   5  * Samsung EXYNOS5 SoC series G-Scaler driver
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation, either version 2 of the License,
  10  * or (at your option) any later version.
  11  */
  12
  13 #include <linux/io.h>
  14 #include <linux/delay.h>
  15
  16 #include "gsc-core.h"
  17
  18 void gsc_hw_set_sw_reset(struct gsc_dev *dev)
  19 {
  20         writel(GSC_SW_RESET_SRESET, dev->regs + GSC_SW_RESET);
  21 }
  22
  23 int gsc_wait_reset(struct gsc_dev *dev)
  24 {
  25         unsigned long end = jiffies + msecs_to_jiffies(50);
  26         u32 cfg;
  27
  28         while (time_before(jiffies, end)) {
  29                 cfg = readl(dev->regs + GSC_SW_RESET);
  30                 if (!cfg)
  31                         return 0;
  32                 usleep_range(10, 20);
  33         }
  34
  35         return -EBUSY;
  36 }
  37
  38 void gsc_hw_set_frm_done_irq_mask(struct gsc_dev *dev, bool mask)
  39 {
  40         u32 cfg;
  41
  42         cfg = readl(dev->regs + GSC_IRQ);
  43         if (mask)
  44                 cfg |= GSC_IRQ_FRMDONE_MASK;
  45         else
  46                 cfg &= ~GSC_IRQ_FRMDONE_MASK;
  47         writel(cfg, dev->regs + GSC_IRQ);
  48 }
  49
  50 void gsc_hw_set_gsc_irq_enable(struct gsc_dev *dev, bool mask)
  51 {
  52         u32 cfg;
  53
  54         cfg = readl(dev->regs + GSC_IRQ);
  55         if (mask)
  56                 cfg |= GSC_IRQ_ENABLE;
  57         else
  58                 cfg &= ~GSC_IRQ_ENABLE;
  59         writel(cfg, dev->regs + GSC_IRQ);
  60 }
  61
  62 void gsc_hw_set_input_buf_masking(struct gsc_dev *dev, u32 shift,
  63                                 bool enable)
  64 {
  65         u32 cfg = readl(dev->regs + GSC_IN_BASE_ADDR_Y_MASK);
  66         u32 mask = 1 << shift;
  67
  68         cfg &= ~mask;
  69         cfg |= enable << shift;
  70
  71         writel(cfg, dev->regs + GSC_IN_BASE_ADDR_Y_MASK);
  72         writel(cfg, dev->regs + GSC_IN_BASE_ADDR_CB_MASK);
  73         writel(cfg, dev->regs + GSC_IN_BASE_ADDR_CR_MASK);
  74 }
  75
  76 void gsc_hw_set_output_buf_masking(struct gsc_dev *dev, u32 shift,
  77                                 bool enable)
  78 {
  79         u32 cfg = readl(dev->regs + GSC_OUT_BASE_ADDR_Y_MASK);
  80         u32 mask = 1 << shift;
  81
  82         cfg &= ~mask;
  83         cfg |= enable << shift;
  84
  85         writel(cfg, dev->regs + GSC_OUT_BASE_ADDR_Y_MASK);
  86         writel(cfg, dev->regs + GSC_OUT_BASE_ADDR_CB_MASK);
  87         writel(cfg, dev->regs + GSC_OUT_BASE_ADDR_CR_MASK);
  88 }
  89
  90 void gsc_hw_set_input_addr(struct gsc_dev *dev, struct gsc_addr *addr,
  91                                 int index)
  92 {
  93         pr_debug("src_buf[%d]: %pad, cb: %pad, cr: %pad", index,
  94                         &addr->y, &addr->cb, &addr->cr);
  95         writel(addr->y, dev->regs + GSC_IN_BASE_ADDR_Y(index));
  96         writel(addr->cb, dev->regs + GSC_IN_BASE_ADDR_CB(index));
  97         writel(addr->cr, dev->regs + GSC_IN_BASE_ADDR_CR(index));
  98
  99 }
 100
 101 void gsc_hw_set_output_addr(struct gsc_dev *dev,
 102                              struct gsc_addr *addr, int index)
 103 {
 104         pr_debug("dst_buf[%d]: %pad, cb: %pad, cr: %pad",
 105                         index, &addr->y, &addr->cb, &addr->cr);
 106         writel(addr->y, dev->regs + GSC_OUT_BASE_ADDR_Y(index));
 107         writel(addr->cb, dev->regs + GSC_OUT_BASE_ADDR_CB(index));
 108         writel(addr->cr, dev->regs + GSC_OUT_BASE_ADDR_CR(index));
 109 }
 110
 111 void gsc_hw_set_input_path(struct gsc_ctx *ctx)
 112 {
 113         struct gsc_dev *dev = ctx->gsc_dev;
 114
 115         u32 cfg = readl(dev->regs + GSC_IN_CON);
 116         cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK);
 117
 118         if (ctx->in_path == GSC_DMA)
 119                 cfg |= GSC_IN_PATH_MEMORY;
 120
 121         writel(cfg, dev->regs + GSC_IN_CON);
 122 }
 123
 124 void gsc_hw_set_in_size(struct gsc_ctx *ctx)
 125 {
 126         struct gsc_dev *dev = ctx->gsc_dev;
 127         struct gsc_frame *frame = &ctx->s_frame;
 128         u32 cfg;
 129
 130         /* Set input pixel offset */
 131         cfg = GSC_SRCIMG_OFFSET_X(frame->crop.left);
 132         cfg |= GSC_SRCIMG_OFFSET_Y(frame->crop.top);
 133         writel(cfg, dev->regs + GSC_SRCIMG_OFFSET);
 134
 135         /* Set input original size */
 136         cfg = GSC_SRCIMG_WIDTH(frame->f_width);
 137         cfg |= GSC_SRCIMG_HEIGHT(frame->f_height);
 138         writel(cfg, dev->regs + GSC_SRCIMG_SIZE);
 139
 140         /* Set input cropped size */
 141         cfg = GSC_CROPPED_WIDTH(frame->crop.width);
 142         cfg |= GSC_CROPPED_HEIGHT(frame->crop.height);
 143         writel(cfg, dev->regs + GSC_CROPPED_SIZE);
 144 }
 145
 146 void gsc_hw_set_in_image_rgb(struct gsc_ctx *ctx)
 147 {
 148         struct gsc_dev *dev = ctx->gsc_dev;
 149         struct gsc_frame *frame = &ctx->s_frame;
 150         u32 cfg;
 151
 152         cfg = readl(dev->regs + GSC_IN_CON);
 153         if (frame->colorspace == V4L2_COLORSPACE_REC709)
 154                 cfg |= GSC_IN_RGB_HD_WIDE;
 155         else
 156                 cfg |= GSC_IN_RGB_SD_WIDE;
 157
 158         if (frame->fmt->pixelformat == V4L2_PIX_FMT_RGB565X)
 159                 cfg |= GSC_IN_RGB565;
 160         else if (frame->fmt->pixelformat == V4L2_PIX_FMT_RGB32)
 161                 cfg |= GSC_IN_XRGB8888;
 162
 163         writel(cfg, dev->regs + GSC_IN_CON);
 164 }
 165
 166 void gsc_hw_set_in_image_format(struct gsc_ctx *ctx)
 167 {
 168         struct gsc_dev *dev = ctx->gsc_dev;
 169         struct gsc_frame *frame = &ctx->s_frame;
 170         u32 i, depth = 0;
 171         u32 cfg;
 172
 173         cfg = readl(dev->regs + GSC_IN_CON);
 174         cfg &= ~(GSC_IN_RGB_TYPE_MASK | GSC_IN_YUV422_1P_ORDER_MASK |
 175                  GSC_IN_CHROMA_ORDER_MASK | GSC_IN_FORMAT_MASK |
 176                  GSC_IN_TILE_TYPE_MASK | GSC_IN_TILE_MODE);
 177         writel(cfg, dev->regs + GSC_IN_CON);
 178
 179         if (is_rgb(frame->fmt->color)) {
 180                 gsc_hw_set_in_image_rgb(ctx);
 181                 return;
 182         }
 183         for (i = 0; i < frame->fmt->num_planes; i++)
 184                 depth += frame->fmt->depth[i];
 185
 186         switch (frame->fmt->num_comp) {
 187         case 1:
 188                 cfg |= GSC_IN_YUV422_1P;
 189                 if (frame->fmt->yorder == GSC_LSB_Y)
 190                         cfg |= GSC_IN_YUV422_1P_ORDER_LSB_Y;
 191                 else
 192                         cfg |= GSC_IN_YUV422_1P_OEDER_LSB_C;
 193                 if (frame->fmt->corder == GSC_CBCR)
 194                         cfg |= GSC_IN_CHROMA_ORDER_CBCR;
 195                 else
 196                         cfg |= GSC_IN_CHROMA_ORDER_CRCB;
 197                 break;
 198         case 2:
 199                 if (depth == 12)
 200                         cfg |= GSC_IN_YUV420_2P;
 201                 else
 202                         cfg |= GSC_IN_YUV422_2P;
 203                 if (frame->fmt->corder == GSC_CBCR)
 204                         cfg |= GSC_IN_CHROMA_ORDER_CBCR;
 205                 else
 206                         cfg |= GSC_IN_CHROMA_ORDER_CRCB;
 207                 break;
 208         case 3:
 209                 if (depth == 12)
 210                         cfg |= GSC_IN_YUV420_3P;
 211                 else
 212                         cfg |= GSC_IN_YUV422_3P;
 213                 break;
 214         }
 215
 216         if (is_tiled(frame->fmt))
 217                 cfg |= GSC_IN_TILE_C_16x8 | GSC_IN_TILE_MODE;
 218
 219         writel(cfg, dev->regs + GSC_IN_CON);
 220 }
 221
 222 void gsc_hw_set_output_path(struct gsc_ctx *ctx)
 223 {
 224         struct gsc_dev *dev = ctx->gsc_dev;
 225
 226         u32 cfg = readl(dev->regs + GSC_OUT_CON);
 227         cfg &= ~GSC_OUT_PATH_MASK;
 228
 229         if (ctx->out_path == GSC_DMA)
 230                 cfg |= GSC_OUT_PATH_MEMORY;
 231         else
 232                 cfg |= GSC_OUT_PATH_LOCAL;
 233
 234         writel(cfg, dev->regs + GSC_OUT_CON);
 235 }
 236
 237 void gsc_hw_set_out_size(struct gsc_ctx *ctx)
 238 {
 239         struct gsc_dev *dev = ctx->gsc_dev;
 240         struct gsc_frame *frame = &ctx->d_frame;
 241         u32 cfg;
 242
 243         /* Set output original size */
 244         if (ctx->out_path == GSC_DMA) {
 245                 cfg = GSC_DSTIMG_OFFSET_X(frame->crop.left);
 246                 cfg |= GSC_DSTIMG_OFFSET_Y(frame->crop.top);
 247                 writel(cfg, dev->regs + GSC_DSTIMG_OFFSET);
 248
 249                 cfg = GSC_DSTIMG_WIDTH(frame->f_width);
 250                 cfg |= GSC_DSTIMG_HEIGHT(frame->f_height);
 251                 writel(cfg, dev->regs + GSC_DSTIMG_SIZE);
 252         }
 253
 254         /* Set output scaled size */
 255         if (ctx->gsc_ctrls.rotate->val == 90 ||
 256             ctx->gsc_ctrls.rotate->val == 270) {
 257                 cfg = GSC_SCALED_WIDTH(frame->crop.height);
 258                 cfg |= GSC_SCALED_HEIGHT(frame->crop.width);
 259         } else {
 260                 cfg = GSC_SCALED_WIDTH(frame->crop.width);
 261                 cfg |= GSC_SCALED_HEIGHT(frame->crop.height);
 262         }
 263         writel(cfg, dev->regs + GSC_SCALED_SIZE);
 264 }
 265
 266 void gsc_hw_set_out_image_rgb(struct gsc_ctx *ctx)
 267 {
 268         struct gsc_dev *dev = ctx->gsc_dev;
 269         struct gsc_frame *frame = &ctx->d_frame;
 270         u32 cfg;
 271
 272         cfg = readl(dev->regs + GSC_OUT_CON);
 273         if (frame->colorspace == V4L2_COLORSPACE_REC709)
 274                 cfg |= GSC_OUT_RGB_HD_WIDE;
 275         else
 276                 cfg |= GSC_OUT_RGB_SD_WIDE;
 277
 278         if (frame->fmt->pixelformat == V4L2_PIX_FMT_RGB565X)
 279                 cfg |= GSC_OUT_RGB565;
 280         else if (frame->fmt->pixelformat == V4L2_PIX_FMT_RGB32)
 281                 cfg |= GSC_OUT_XRGB8888;
 282
 283         writel(cfg, dev->regs + GSC_OUT_CON);
 284 }
 285
 286 void gsc_hw_set_out_image_format(struct gsc_ctx *ctx)
 287 {
 288         struct gsc_dev *dev = ctx->gsc_dev;
 289         struct gsc_frame *frame = &ctx->d_frame;
 290         u32 i, depth = 0;
 291         u32 cfg;
 292
 293         cfg = readl(dev->regs + GSC_OUT_CON);
 294         cfg &= ~(GSC_OUT_RGB_TYPE_MASK | GSC_OUT_YUV422_1P_ORDER_MASK |
 295                  GSC_OUT_CHROMA_ORDER_MASK | GSC_OUT_FORMAT_MASK |
 296                  GSC_OUT_TILE_TYPE_MASK | GSC_OUT_TILE_MODE);
 297         writel(cfg, dev->regs + GSC_OUT_CON);
 298
 299         if (is_rgb(frame->fmt->color)) {
 300                 gsc_hw_set_out_image_rgb(ctx);
 301                 return;
 302         }
 303
 304         if (ctx->out_path != GSC_DMA) {
 305                 cfg |= GSC_OUT_YUV444;
 306                 goto end_set;
 307         }
 308
 309         for (i = 0; i < frame->fmt->num_planes; i++)
 310                 depth += frame->fmt->depth[i];
 311
 312         switch (frame->fmt->num_comp) {
 313         case 1:
 314                 cfg |= GSC_OUT_YUV422_1P;
 315                 if (frame->fmt->yorder == GSC_LSB_Y)
 316                         cfg |= GSC_OUT_YUV422_1P_ORDER_LSB_Y;
 317                 else
 318                         cfg |= GSC_OUT_YUV422_1P_OEDER_LSB_C;
 319                 if (frame->fmt->corder == GSC_CBCR)
 320                         cfg |= GSC_OUT_CHROMA_ORDER_CBCR;
 321                 else
 322                         cfg |= GSC_OUT_CHROMA_ORDER_CRCB;
 323                 break;
 324         case 2:
 325                 if (depth == 12)
 326                         cfg |= GSC_OUT_YUV420_2P;
 327                 else
 328                         cfg |= GSC_OUT_YUV422_2P;
 329                 if (frame->fmt->corder == GSC_CBCR)
 330                         cfg |= GSC_OUT_CHROMA_ORDER_CBCR;
 331                 else
 332                         cfg |= GSC_OUT_CHROMA_ORDER_CRCB;
 333                 break;
 334         case 3:
 335                 cfg |= GSC_OUT_YUV420_3P;
 336                 break;
 337         }
 338
 339         if (is_tiled(frame->fmt))
 340                 cfg |= GSC_OUT_TILE_C_16x8 | GSC_OUT_TILE_MODE;
 341
 342 end_set:
 343         writel(cfg, dev->regs + GSC_OUT_CON);
 344 }
 345
 346 void gsc_hw_set_prescaler(struct gsc_ctx *ctx)
 347 {
 348         struct gsc_dev *dev = ctx->gsc_dev;
 349         struct gsc_scaler *sc = &ctx->scaler;
 350         u32 cfg;
 351
 352         cfg = GSC_PRESC_SHFACTOR(sc->pre_shfactor);
 353         cfg |= GSC_PRESC_H_RATIO(sc->pre_hratio);
 354         cfg |= GSC_PRESC_V_RATIO(sc->pre_vratio);
 355         writel(cfg, dev->regs + GSC_PRE_SCALE_RATIO);
 356 }
 357
 358 void gsc_hw_set_mainscaler(struct gsc_ctx *ctx)
 359 {
 360         struct gsc_dev *dev = ctx->gsc_dev;
 361         struct gsc_scaler *sc = &ctx->scaler;
 362         u32 cfg;
 363
 364         cfg = GSC_MAIN_H_RATIO_VALUE(sc->main_hratio);
 365         writel(cfg, dev->regs + GSC_MAIN_H_RATIO);
 366
 367         cfg = GSC_MAIN_V_RATIO_VALUE(sc->main_vratio);
 368         writel(cfg, dev->regs + GSC_MAIN_V_RATIO);
 369 }
 370
 371 void gsc_hw_set_rotation(struct gsc_ctx *ctx)
 372 {
 373         struct gsc_dev *dev = ctx->gsc_dev;
 374         u32 cfg;
 375
 376         cfg = readl(dev->regs + GSC_IN_CON);
 377         cfg &= ~GSC_IN_ROT_MASK;
 378
 379         switch (ctx->gsc_ctrls.rotate->val) {
 380         case 270:
 381                 cfg |= GSC_IN_ROT_270;
 382                 break;
 383         case 180:
 384                 cfg |= GSC_IN_ROT_180;
 385                 break;
 386         case 90:
 387                 if (ctx->gsc_ctrls.hflip->val)
 388                         cfg |= GSC_IN_ROT_90_XFLIP;
 389                 else if (ctx->gsc_ctrls.vflip->val)
 390                         cfg |= GSC_IN_ROT_90_YFLIP;
 391                 else
 392                         cfg |= GSC_IN_ROT_90;
 393                 break;
 394         case 0:
 395                 if (ctx->gsc_ctrls.hflip->val)
 396                         cfg |= GSC_IN_ROT_XFLIP;
 397                 else if (ctx->gsc_ctrls.vflip->val)
 398                         cfg |= GSC_IN_ROT_YFLIP;
 399         }
 400
 401         writel(cfg, dev->regs + GSC_IN_CON);
 402 }
 403
 404 void gsc_hw_set_global_alpha(struct gsc_ctx *ctx)
 405 {
 406         struct gsc_dev *dev = ctx->gsc_dev;
 407         struct gsc_frame *frame = &ctx->d_frame;
 408         u32 cfg;
 409
 410         if (!is_rgb(frame->fmt->color)) {
 411                 pr_debug("Not a RGB format");
 412                 return;
 413         }
 414
 415         cfg = readl(dev->regs + GSC_OUT_CON);
 416         cfg &= ~GSC_OUT_GLOBAL_ALPHA_MASK;
 417
 418         cfg |= GSC_OUT_GLOBAL_ALPHA(ctx->gsc_ctrls.global_alpha->val);
 419         writel(cfg, dev->regs + GSC_OUT_CON);
 420 }
 421
 422 void gsc_hw_set_sfr_update(struct gsc_ctx *ctx)
 423 {
 424         struct gsc_dev *dev = ctx->gsc_dev;
 425         u32 cfg;
 426
 427         cfg = readl(dev->regs + GSC_ENABLE);
 428         cfg |= GSC_ENABLE_SFR_UPDATE;
 429         writel(cfg, dev->regs + GSC_ENABLE);
 430 }