drivers/media/platform/mtk-jpeg/mtk_jpeg_hw.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2016 MediaTek Inc.
   4  * Author: Ming Hsiu Tsai <minghsiu.tsai@mediatek.com>
   5  *         Rick Chang <rick.chang@mediatek.com>
   6  */
   7
   8 #include <linux/io.h>
   9 #include <linux/kernel.h>
  10 #include <media/videobuf2-core.h>
  11
  12 #include "mtk_jpeg_hw.h"
  13
  14 #define MTK_JPEG_DUNUM_MASK(val)        (((val) - 1) & 0x3)
  15
  16 enum mtk_jpeg_color {
  17         MTK_JPEG_COLOR_420              = 0x00221111,
  18         MTK_JPEG_COLOR_422              = 0x00211111,
  19         MTK_JPEG_COLOR_444              = 0x00111111,
  20         MTK_JPEG_COLOR_422V             = 0x00121111,
  21         MTK_JPEG_COLOR_422X2            = 0x00412121,
  22         MTK_JPEG_COLOR_422VX2           = 0x00222121,
  23         MTK_JPEG_COLOR_400              = 0x00110000
  24 };
  25
  26 static inline int mtk_jpeg_verify_align(u32 val, int align, u32 reg)
  27 {
  28         if (val & (align - 1)) {
  29                 pr_err("mtk-jpeg: write reg %x without %d align\n", reg, align);
  30                 return -1;
  31         }
  32
  33         return 0;
  34 }
  35
  36 static int mtk_jpeg_decide_format(struct mtk_jpeg_dec_param *param)
  37 {
  38         param->src_color = (param->sampling_w[0] << 20) |
  39                            (param->sampling_h[0] << 16) |
  40                            (param->sampling_w[1] << 12) |
  41                            (param->sampling_h[1] << 8) |
  42                            (param->sampling_w[2] << 4) |
  43                            (param->sampling_h[2]);
  44
  45         param->uv_brz_w = 0;
  46         switch (param->src_color) {
  47         case MTK_JPEG_COLOR_444:
  48                 param->uv_brz_w = 1;
  49                 param->dst_fourcc = V4L2_PIX_FMT_YUV422M;
  50                 break;
  51         case MTK_JPEG_COLOR_422X2:
  52         case MTK_JPEG_COLOR_422:
  53                 param->dst_fourcc = V4L2_PIX_FMT_YUV422M;
  54                 break;
  55         case MTK_JPEG_COLOR_422V:
  56         case MTK_JPEG_COLOR_422VX2:
  57                 param->uv_brz_w = 1;
  58                 param->dst_fourcc = V4L2_PIX_FMT_YUV420M;
  59                 break;
  60         case MTK_JPEG_COLOR_420:
  61                 param->dst_fourcc = V4L2_PIX_FMT_YUV420M;
  62                 break;
  63         case MTK_JPEG_COLOR_400:
  64                 param->dst_fourcc = V4L2_PIX_FMT_GREY;
  65                 break;
  66         default:
  67                 param->dst_fourcc = 0;
  68                 return -1;
  69         }
  70
  71         return 0;
  72 }
  73
  74 static void mtk_jpeg_calc_mcu(struct mtk_jpeg_dec_param *param)
  75 {
  76         u32 factor_w, factor_h;
  77         u32 i, comp, blk;
  78
  79         factor_w = 2 + param->sampling_w[0];
  80         factor_h = 2 + param->sampling_h[0];
  81         param->mcu_w = (param->pic_w + (1 << factor_w) - 1) >> factor_w;
  82         param->mcu_h = (param->pic_h + (1 << factor_h) - 1) >> factor_h;
  83         param->total_mcu = param->mcu_w * param->mcu_h;
  84         param->unit_num = ((param->pic_w + 7) >> 3) * ((param->pic_h + 7) >> 3);
  85         param->blk_num = 0;
  86         for (i = 0; i < MTK_JPEG_COMP_MAX; i++) {
  87                 param->blk_comp[i] = 0;
  88                 if (i >= param->comp_num)
  89                         continue;
  90                 param->blk_comp[i] = param->sampling_w[i] *
  91                                      param->sampling_h[i];
  92                 param->blk_num += param->blk_comp[i];
  93         }
  94
  95         param->membership = 0;
  96         for (i = 0, blk = 0, comp = 0; i < MTK_JPEG_BLOCK_MAX; i++) {
  97                 if (i < param->blk_num && comp < param->comp_num) {
  98                         u32 tmp;
  99
 100                         tmp = (0x04 + (comp & 0x3));
 101                         param->membership |= tmp << (i * 3);
 102                         if (++blk == param->blk_comp[comp]) {
 103                                 comp++;
 104                                 blk = 0;
 105                         }
 106                 } else {
 107                         param->membership |=  7 << (i * 3);
 108                 }
 109         }
 110 }
 111
 112 static void mtk_jpeg_calc_dma_group(struct mtk_jpeg_dec_param *param)
 113 {
 114         u32 factor_mcu = 3;
 115
 116         if (param->src_color == MTK_JPEG_COLOR_444 &&
 117             param->dst_fourcc == V4L2_PIX_FMT_YUV422M)
 118                 factor_mcu = 4;
 119         else if (param->src_color == MTK_JPEG_COLOR_422V &&
 120                  param->dst_fourcc == V4L2_PIX_FMT_YUV420M)
 121                 factor_mcu = 4;
 122         else if (param->src_color == MTK_JPEG_COLOR_422X2 &&
 123                  param->dst_fourcc == V4L2_PIX_FMT_YUV422M)
 124                 factor_mcu = 2;
 125         else if (param->src_color == MTK_JPEG_COLOR_400 ||
 126                  (param->src_color & 0x0FFFF) == 0)
 127                 factor_mcu = 4;
 128
 129         param->dma_mcu = 1 << factor_mcu;
 130         param->dma_group = param->mcu_w / param->dma_mcu;
 131         param->dma_last_mcu = param->mcu_w % param->dma_mcu;
 132         if (param->dma_last_mcu)
 133                 param->dma_group++;
 134         else
 135                 param->dma_last_mcu = param->dma_mcu;
 136 }
 137
 138 static int mtk_jpeg_calc_dst_size(struct mtk_jpeg_dec_param *param)
 139 {
 140         u32 i, padding_w;
 141         u32 ds_row_h[3];
 142         u32 brz_w[3];
 143
 144         brz_w[0] = 0;
 145         brz_w[1] = param->uv_brz_w;
 146         brz_w[2] = brz_w[1];
 147
 148         for (i = 0; i < param->comp_num; i++) {
 149                 if (brz_w[i] > 3)
 150                         return -1;
 151
 152                 padding_w = param->mcu_w * MTK_JPEG_DCTSIZE *
 153                                 param->sampling_w[i];
 154                 /* output format is 420/422 */
 155                 param->comp_w[i] = padding_w >> brz_w[i];
 156                 param->comp_w[i] = mtk_jpeg_align(param->comp_w[i],
 157                                                   MTK_JPEG_DCTSIZE);
 158                 param->img_stride[i] = i ? mtk_jpeg_align(param->comp_w[i], 16)
 159                                         : mtk_jpeg_align(param->comp_w[i], 32);
 160                 ds_row_h[i] = (MTK_JPEG_DCTSIZE * param->sampling_h[i]);
 161         }
 162         param->dec_w = param->img_stride[0];
 163         param->dec_h = ds_row_h[0] * param->mcu_h;
 164
 165         for (i = 0; i < MTK_JPEG_COMP_MAX; i++) {
 166                 /* They must be equal in frame mode. */
 167                 param->mem_stride[i] = param->img_stride[i];
 168                 param->comp_size[i] = param->mem_stride[i] * ds_row_h[i] *
 169                                       param->mcu_h;
 170         }
 171
 172         param->y_size = param->comp_size[0];
 173         param->uv_size = param->comp_size[1];
 174         param->dec_size = param->y_size + (param->uv_size << 1);
 175
 176         return 0;
 177 }
 178
 179 int mtk_jpeg_dec_fill_param(struct mtk_jpeg_dec_param *param)
 180 {
 181         if (mtk_jpeg_decide_format(param))
 182                 return -1;
 183
 184         mtk_jpeg_calc_mcu(param);
 185         mtk_jpeg_calc_dma_group(param);
 186         if (mtk_jpeg_calc_dst_size(param))
 187                 return -2;
 188
 189         return 0;
 190 }
 191
 192 u32 mtk_jpeg_dec_get_int_status(void __iomem *base)
 193 {
 194         u32 ret;
 195
 196         ret = readl(base + JPGDEC_REG_INTERRUPT_STATUS) & BIT_INQST_MASK_ALLIRQ;
 197         if (ret)
 198                 writel(ret, base + JPGDEC_REG_INTERRUPT_STATUS);
 199
 200         return ret;
 201 }
 202
 203 u32 mtk_jpeg_dec_enum_result(u32 irq_result)
 204 {
 205         if (irq_result & BIT_INQST_MASK_EOF)
 206                 return MTK_JPEG_DEC_RESULT_EOF_DONE;
 207         if (irq_result & BIT_INQST_MASK_PAUSE)
 208                 return MTK_JPEG_DEC_RESULT_PAUSE;
 209         if (irq_result & BIT_INQST_MASK_UNDERFLOW)
 210                 return MTK_JPEG_DEC_RESULT_UNDERFLOW;
 211         if (irq_result & BIT_INQST_MASK_OVERFLOW)
 212                 return MTK_JPEG_DEC_RESULT_OVERFLOW;
 213         if (irq_result & BIT_INQST_MASK_ERROR_BS)
 214                 return MTK_JPEG_DEC_RESULT_ERROR_BS;
 215
 216         return MTK_JPEG_DEC_RESULT_ERROR_UNKNOWN;
 217 }
 218
 219 void mtk_jpeg_dec_start(void __iomem *base)
 220 {
 221         writel(0, base + JPGDEC_REG_TRIG);
 222 }
 223
 224 static void mtk_jpeg_dec_soft_reset(void __iomem *base)
 225 {
 226         writel(0x0000FFFF, base + JPGDEC_REG_INTERRUPT_STATUS);
 227         writel(0x00, base + JPGDEC_REG_RESET);
 228         writel(0x01, base + JPGDEC_REG_RESET);
 229 }
 230
 231 static void mtk_jpeg_dec_hard_reset(void __iomem *base)
 232 {
 233         writel(0x00, base + JPGDEC_REG_RESET);
 234         writel(0x10, base + JPGDEC_REG_RESET);
 235 }
 236
 237 void mtk_jpeg_dec_reset(void __iomem *base)
 238 {
 239         mtk_jpeg_dec_soft_reset(base);
 240         mtk_jpeg_dec_hard_reset(base);
 241 }
 242
 243 static void mtk_jpeg_dec_set_brz_factor(void __iomem *base, u8 yscale_w,
 244                                         u8 yscale_h, u8 uvscale_w, u8 uvscale_h)
 245 {
 246         u32 val;
 247
 248         val = (uvscale_h << 12) | (uvscale_w << 8) |
 249               (yscale_h << 4) | yscale_w;
 250         writel(val, base + JPGDEC_REG_BRZ_FACTOR);
 251 }
 252
 253 static void mtk_jpeg_dec_set_dst_bank0(void __iomem *base, u32 addr_y,
 254                                        u32 addr_u, u32 addr_v)
 255 {
 256         mtk_jpeg_verify_align(addr_y, 16, JPGDEC_REG_DEST_ADDR0_Y);
 257         writel(addr_y, base + JPGDEC_REG_DEST_ADDR0_Y);
 258         mtk_jpeg_verify_align(addr_u, 16, JPGDEC_REG_DEST_ADDR0_U);
 259         writel(addr_u, base + JPGDEC_REG_DEST_ADDR0_U);
 260         mtk_jpeg_verify_align(addr_v, 16, JPGDEC_REG_DEST_ADDR0_V);
 261         writel(addr_v, base + JPGDEC_REG_DEST_ADDR0_V);
 262 }
 263
 264 static void mtk_jpeg_dec_set_dst_bank1(void __iomem *base, u32 addr_y,
 265                                        u32 addr_u, u32 addr_v)
 266 {
 267         writel(addr_y, base + JPGDEC_REG_DEST_ADDR1_Y);
 268         writel(addr_u, base + JPGDEC_REG_DEST_ADDR1_U);
 269         writel(addr_v, base + JPGDEC_REG_DEST_ADDR1_V);
 270 }
 271
 272 static void mtk_jpeg_dec_set_mem_stride(void __iomem *base, u32 stride_y,
 273                                         u32 stride_uv)
 274 {
 275         writel((stride_y & 0xFFFF), base + JPGDEC_REG_STRIDE_Y);
 276         writel((stride_uv & 0xFFFF), base + JPGDEC_REG_STRIDE_UV);
 277 }
 278
 279 static void mtk_jpeg_dec_set_img_stride(void __iomem *base, u32 stride_y,
 280                                         u32 stride_uv)
 281 {
 282         writel((stride_y & 0xFFFF), base + JPGDEC_REG_IMG_STRIDE_Y);
 283         writel((stride_uv & 0xFFFF), base + JPGDEC_REG_IMG_STRIDE_UV);
 284 }
 285
 286 static void mtk_jpeg_dec_set_pause_mcu_idx(void __iomem *base, u32 idx)
 287 {
 288         writel(idx & 0x0003FFFFFF, base + JPGDEC_REG_PAUSE_MCU_NUM);
 289 }
 290
 291 static void mtk_jpeg_dec_set_dec_mode(void __iomem *base, u32 mode)
 292 {
 293         writel(mode & 0x03, base + JPGDEC_REG_OPERATION_MODE);
 294 }
 295
 296 static void mtk_jpeg_dec_set_bs_write_ptr(void __iomem *base, u32 ptr)
 297 {
 298         mtk_jpeg_verify_align(ptr, 16, JPGDEC_REG_FILE_BRP);
 299         writel(ptr, base + JPGDEC_REG_FILE_BRP);
 300 }
 301
 302 static void mtk_jpeg_dec_set_bs_info(void __iomem *base, u32 addr, u32 size)
 303 {
 304         mtk_jpeg_verify_align(addr, 16, JPGDEC_REG_FILE_ADDR);
 305         mtk_jpeg_verify_align(size, 128, JPGDEC_REG_FILE_TOTAL_SIZE);
 306         writel(addr, base + JPGDEC_REG_FILE_ADDR);
 307         writel(size, base + JPGDEC_REG_FILE_TOTAL_SIZE);
 308 }
 309
 310 static void mtk_jpeg_dec_set_comp_id(void __iomem *base, u32 id_y, u32 id_u,
 311                                      u32 id_v)
 312 {
 313         u32 val;
 314
 315         val = ((id_y & 0x00FF) << 24) | ((id_u & 0x00FF) << 16) |
 316               ((id_v & 0x00FF) << 8);
 317         writel(val, base + JPGDEC_REG_COMP_ID);
 318 }
 319
 320 static void mtk_jpeg_dec_set_total_mcu(void __iomem *base, u32 num)
 321 {
 322         writel(num - 1, base + JPGDEC_REG_TOTAL_MCU_NUM);
 323 }
 324
 325 static void mtk_jpeg_dec_set_comp0_du(void __iomem *base, u32 num)
 326 {
 327         writel(num - 1, base + JPGDEC_REG_COMP0_DATA_UNIT_NUM);
 328 }
 329
 330 static void mtk_jpeg_dec_set_du_membership(void __iomem *base, u32 member,
 331                                            u32 gmc, u32 isgray)
 332 {
 333         if (isgray)
 334                 member = 0x3FFFFFFC;
 335         member |= (isgray << 31) | (gmc << 30);
 336         writel(member, base + JPGDEC_REG_DU_CTRL);
 337 }
 338
 339 static void mtk_jpeg_dec_set_q_table(void __iomem *base, u32 id0, u32 id1,
 340                                      u32 id2)
 341 {
 342         u32 val;
 343
 344         val = ((id0 & 0x0f) << 8) | ((id1 & 0x0f) << 4) | ((id2 & 0x0f) << 0);
 345         writel(val, base + JPGDEC_REG_QT_ID);
 346 }
 347
 348 static void mtk_jpeg_dec_set_dma_group(void __iomem *base, u32 mcu_group,
 349                                        u32 group_num, u32 last_mcu)
 350 {
 351         u32 val;
 352
 353         val = (((mcu_group - 1) & 0x00FF) << 16) |
 354               (((group_num - 1) & 0x007F) << 8) |
 355               ((last_mcu - 1) & 0x00FF);
 356         writel(val, base + JPGDEC_REG_WDMA_CTRL);
 357 }
 358
 359 static void mtk_jpeg_dec_set_sampling_factor(void __iomem *base, u32 comp_num,
 360                                              u32 y_w, u32 y_h, u32 u_w,
 361                                              u32 u_h, u32 v_w, u32 v_h)
 362 {
 363         u32 val;
 364         u32 y_wh = (MTK_JPEG_DUNUM_MASK(y_w) << 2) | MTK_JPEG_DUNUM_MASK(y_h);
 365         u32 u_wh = (MTK_JPEG_DUNUM_MASK(u_w) << 2) | MTK_JPEG_DUNUM_MASK(u_h);
 366         u32 v_wh = (MTK_JPEG_DUNUM_MASK(v_w) << 2) | MTK_JPEG_DUNUM_MASK(v_h);
 367
 368         if (comp_num == 1)
 369                 val = 0;
 370         else
 371                 val = (y_wh << 8) | (u_wh << 4) | v_wh;
 372         writel(val, base + JPGDEC_REG_DU_NUM);
 373 }
 374
 375 void mtk_jpeg_dec_set_config(void __iomem *base,
 376                              struct mtk_jpeg_dec_param *config,
 377                              struct mtk_jpeg_bs *bs,
 378                              struct mtk_jpeg_fb *fb)
 379 {
 380         mtk_jpeg_dec_set_brz_factor(base, 0, 0, config->uv_brz_w, 0);
 381         mtk_jpeg_dec_set_dec_mode(base, 0);
 382         mtk_jpeg_dec_set_comp0_du(base, config->unit_num);
 383         mtk_jpeg_dec_set_total_mcu(base, config->total_mcu);
 384         mtk_jpeg_dec_set_bs_info(base, bs->str_addr, bs->size);
 385         mtk_jpeg_dec_set_bs_write_ptr(base, bs->end_addr);
 386         mtk_jpeg_dec_set_du_membership(base, config->membership, 1,
 387                                        (config->comp_num == 1) ? 1 : 0);
 388         mtk_jpeg_dec_set_comp_id(base, config->comp_id[0], config->comp_id[1],
 389                                  config->comp_id[2]);
 390         mtk_jpeg_dec_set_q_table(base, config->qtbl_num[0],
 391                                  config->qtbl_num[1], config->qtbl_num[2]);
 392         mtk_jpeg_dec_set_sampling_factor(base, config->comp_num,
 393                                          config->sampling_w[0],
 394                                          config->sampling_h[0],
 395                                          config->sampling_w[1],
 396                                          config->sampling_h[1],
 397                                          config->sampling_w[2],
 398                                          config->sampling_h[2]);
 399         mtk_jpeg_dec_set_mem_stride(base, config->mem_stride[0],
 400                                     config->mem_stride[1]);
 401         mtk_jpeg_dec_set_img_stride(base, config->img_stride[0],
 402                                     config->img_stride[1]);
 403         mtk_jpeg_dec_set_dst_bank0(base, fb->plane_addr[0],
 404                                    fb->plane_addr[1], fb->plane_addr[2]);
 405         mtk_jpeg_dec_set_dst_bank1(base, 0, 0, 0);
 406         mtk_jpeg_dec_set_dma_group(base, config->dma_mcu, config->dma_group,
 407                                    config->dma_last_mcu);
 408         mtk_jpeg_dec_set_pause_mcu_idx(base, config->total_mcu);
 409 }