LXR linux/drivers/media/platform/coda/coda-gdi.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Coda multi-standard codec IP
   4 *
   5 * Copyright (C) 2014 Philipp Zabel, Pengutronix
   6 */
   7
   8#include <linux/bitops.h>
   9#include "coda.h"
  10
  11#define XY2_INVERT      BIT(7)
  12#define XY2_ZERO        BIT(6)
  13#define XY2_TB_XOR      BIT(5)
  14#define XY2_XYSEL       BIT(4)
  15#define XY2_Y           (1 << 4)
  16#define XY2_X           (0 << 4)
  17
  18#define XY2(luma_sel, luma_bit, chroma_sel, chroma_bit) \
  19        (((XY2_##luma_sel) | (luma_bit)) << 8 | \
  20         (XY2_##chroma_sel) | (chroma_bit))
  21
  22static const u16 xy2ca_zero_map[16] = {
  23        XY2(ZERO, 0, ZERO, 0),
  24        XY2(ZERO, 0, ZERO, 0),
  25        XY2(ZERO, 0, ZERO, 0),
  26        XY2(ZERO, 0, ZERO, 0),
  27        XY2(ZERO, 0, ZERO, 0),
  28        XY2(ZERO, 0, ZERO, 0),
  29        XY2(ZERO, 0, ZERO, 0),
  30        XY2(ZERO, 0, ZERO, 0),
  31        XY2(ZERO, 0, ZERO, 0),
  32        XY2(ZERO, 0, ZERO, 0),
  33        XY2(ZERO, 0, ZERO, 0),
  34        XY2(ZERO, 0, ZERO, 0),
  35        XY2(ZERO, 0, ZERO, 0),
  36        XY2(ZERO, 0, ZERO, 0),
  37        XY2(ZERO, 0, ZERO, 0),
  38        XY2(ZERO, 0, ZERO, 0),
  39};
  40
  41static const u16 xy2ca_tiled_map[16] = {
  42        XY2(Y,    0, Y,    0),
  43        XY2(Y,    1, Y,    1),
  44        XY2(Y,    2, Y,    2),
  45        XY2(Y,    3, X,    3),
  46        XY2(X,    3, ZERO, 0),
  47        XY2(ZERO, 0, ZERO, 0),
  48        XY2(ZERO, 0, ZERO, 0),
  49        XY2(ZERO, 0, ZERO, 0),
  50        XY2(ZERO, 0, ZERO, 0),
  51        XY2(ZERO, 0, ZERO, 0),
  52        XY2(ZERO, 0, ZERO, 0),
  53        XY2(ZERO, 0, ZERO, 0),
  54        XY2(ZERO, 0, ZERO, 0),
  55        XY2(ZERO, 0, ZERO, 0),
  56        XY2(ZERO, 0, ZERO, 0),
  57        XY2(ZERO, 0, ZERO, 0),
  58};
  59
  60/*
  61 * RA[15:0], CA[15:8] are hardwired to contain the 24-bit macroblock
  62 * start offset (macroblock size is 16x16 for luma, 16x8 for chroma).
  63 * Bits CA[4:0] are set using XY2CA above. BA[3:0] seems to be unused.
  64 */
  65
  66#define RBC_CA          (0 << 4)
  67#define RBC_BA          (1 << 4)
  68#define RBC_RA          (2 << 4)
  69#define RBC_ZERO        (3 << 4)
  70
  71#define RBC(luma_sel, luma_bit, chroma_sel, chroma_bit) \
  72        (((RBC_##luma_sel) | (luma_bit)) << 6 | \
  73         (RBC_##chroma_sel) | (chroma_bit))
  74
  75static const u16 rbc2axi_tiled_map[32] = {
  76        RBC(ZERO, 0, ZERO, 0),
  77        RBC(ZERO, 0, ZERO, 0),
  78        RBC(ZERO, 0, ZERO, 0),
  79        RBC(CA,   0, CA,   0),
  80        RBC(CA,   1, CA,   1),
  81        RBC(CA,   2, CA,   2),
  82        RBC(CA,   3, CA,   3),
  83        RBC(CA,   4, CA,   8),
  84        RBC(CA,   8, CA,   9),
  85        RBC(CA,   9, CA,  10),
  86        RBC(CA,  10, CA,  11),
  87        RBC(CA,  11, CA,  12),
  88        RBC(CA,  12, CA,  13),
  89        RBC(CA,  13, CA,  14),
  90        RBC(CA,  14, CA,  15),
  91        RBC(CA,  15, RA,   0),
  92        RBC(RA,   0, RA,   1),
  93        RBC(RA,   1, RA,   2),
  94        RBC(RA,   2, RA,   3),
  95        RBC(RA,   3, RA,   4),
  96        RBC(RA,   4, RA,   5),
  97        RBC(RA,   5, RA,   6),
  98        RBC(RA,   6, RA,   7),
  99        RBC(RA,   7, RA,   8),
 100        RBC(RA,   8, RA,   9),
 101        RBC(RA,   9, RA,  10),
 102        RBC(RA,  10, RA,  11),
 103        RBC(RA,  11, RA,  12),
 104        RBC(RA,  12, RA,  13),
 105        RBC(RA,  13, RA,  14),
 106        RBC(RA,  14, RA,  15),
 107        RBC(RA,  15, ZERO, 0),
 108};
 109
 110void coda_set_gdi_regs(struct coda_ctx *ctx)
 111{
 112        struct coda_dev *dev = ctx->dev;
 113        const u16 *xy2ca_map;
 114        u32 xy2rbc_config;
 115        int i;
 116
 117        switch (ctx->tiled_map_type) {
 118        case GDI_LINEAR_FRAME_MAP:
 119        default:
 120                xy2ca_map = xy2ca_zero_map;
 121                xy2rbc_config = 0;
 122                break;
 123        case GDI_TILED_FRAME_MB_RASTER_MAP:
 124                xy2ca_map = xy2ca_tiled_map;
 125                xy2rbc_config = CODA9_XY2RBC_TILED_MAP |
 126                                CODA9_XY2RBC_CA_INC_HOR |
 127                                (16 - 1) << 12 | (8 - 1) << 4;
 128                break;
 129        }
 130
 131        for (i = 0; i < 16; i++)
 132                coda_write(dev, xy2ca_map[i],
 133                                CODA9_GDI_XY2_CAS_0 + 4 * i);
 134        for (i = 0; i < 4; i++)
 135                coda_write(dev, XY2(ZERO, 0, ZERO, 0),
 136                                CODA9_GDI_XY2_BA_0 + 4 * i);
 137        for (i = 0; i < 16; i++)
 138                coda_write(dev, XY2(ZERO, 0, ZERO, 0),
 139                                CODA9_GDI_XY2_RAS_0 + 4 * i);
 140        coda_write(dev, xy2rbc_config, CODA9_GDI_XY2_RBC_CONFIG);
 141        if (xy2rbc_config) {
 142                for (i = 0; i < 32; i++)
 143                        coda_write(dev, rbc2axi_tiled_map[i],
 144                                        CODA9_GDI_RBC2_AXI_0 + 4 * i);
 145        }
 146}
 147