1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) Jernej Skrabec <jernej.skrabec@siol.net> 4 */ 5 6 #include <drm/drm_print.h> 7 8 #include "sun8i_csc.h" 9 #include "sun8i_mixer.h" 10 11 static const u32 ccsc_base[2][2] = { 12 {CCSC00_OFFSET, CCSC01_OFFSET}, 13 {CCSC10_OFFSET, CCSC11_OFFSET}, 14 }; 15 16 /* 17 * Factors are in two's complement format, 10 bits for fractinal part. 18 * First tree values in each line are multiplication factor and last 19 * value is constant, which is added at the end. 20 */ 21 22 static const u32 yuv2rgb[2][2][12] = { 23 [DRM_COLOR_YCBCR_LIMITED_RANGE] = { 24 [DRM_COLOR_YCBCR_BT601] = { 25 0x000004A8, 0x00000000, 0x00000662, 0xFFFC8451, 26 0x000004A8, 0xFFFFFE6F, 0xFFFFFCC0, 0x00021E4D, 27 0x000004A8, 0x00000811, 0x00000000, 0xFFFBACA9, 28 }, 29 [DRM_COLOR_YCBCR_BT709] = { 30 0x000004A8, 0x00000000, 0x0000072B, 0xFFFC1F99, 31 0x000004A8, 0xFFFFFF26, 0xFFFFFDDF, 0x00013383, 32 0x000004A8, 0x00000873, 0x00000000, 0xFFFB7BEF, 33 } 34 }, 35 [DRM_COLOR_YCBCR_FULL_RANGE] = { 36 [DRM_COLOR_YCBCR_BT601] = { 37 0x00000400, 0x00000000, 0x0000059B, 0xFFFD322E, 38 0x00000400, 0xFFFFFEA0, 0xFFFFFD25, 0x00021DD5, 39 0x00000400, 0x00000716, 0x00000000, 0xFFFC74BD, 40 }, 41 [DRM_COLOR_YCBCR_BT709] = { 42 0x00000400, 0x00000000, 0x0000064C, 0xFFFCD9B4, 43 0x00000400, 0xFFFFFF41, 0xFFFFFE21, 0x00014F96, 44 0x00000400, 0x0000076C, 0x00000000, 0xFFFC49EF, 45 } 46 }, 47 }; 48 49 static const u32 yvu2rgb[2][2][12] = { 50 [DRM_COLOR_YCBCR_LIMITED_RANGE] = { 51 [DRM_COLOR_YCBCR_BT601] = { 52 0x000004A8, 0x00000662, 0x00000000, 0xFFFC8451, 53 0x000004A8, 0xFFFFFCC0, 0xFFFFFE6F, 0x00021E4D, 54 0x000004A8, 0x00000000, 0x00000811, 0xFFFBACA9, 55 }, 56 [DRM_COLOR_YCBCR_BT709] = { 57 0x000004A8, 0x0000072B, 0x00000000, 0xFFFC1F99, 58 0x000004A8, 0xFFFFFDDF, 0xFFFFFF26, 0x00013383, 59 0x000004A8, 0x00000000, 0x00000873, 0xFFFB7BEF, 60 } 61 }, 62 [DRM_COLOR_YCBCR_FULL_RANGE] = { 63 [DRM_COLOR_YCBCR_BT601] = { 64 0x00000400, 0x0000059B, 0x00000000, 0xFFFD322E, 65 0x00000400, 0xFFFFFD25, 0xFFFFFEA0, 0x00021DD5, 66 0x00000400, 0x00000000, 0x00000716, 0xFFFC74BD, 67 }, 68 [DRM_COLOR_YCBCR_BT709] = { 69 0x00000400, 0x0000064C, 0x00000000, 0xFFFCD9B4, 70 0x00000400, 0xFFFFFE21, 0xFFFFFF41, 0x00014F96, 71 0x00000400, 0x00000000, 0x0000076C, 0xFFFC49EF, 72 } 73 }, 74 }; 75 76 /* 77 * DE3 has a bit different CSC units. Factors are in two's complement format. 78 * First three factors in a row are multiplication factors which have 17 bits 79 * for fractional part. Fourth value in a row is comprised of two factors. 80 * Upper 16 bits represents difference, which is subtracted from the input 81 * value before multiplication and lower 16 bits represents constant, which 82 * is addes at the end. 83 * 84 * x' = c00 * (x + d0) + c01 * (y + d1) + c02 * (z + d2) + const0 85 * y' = c10 * (x + d0) + c11 * (y + d1) + c12 * (z + d2) + const1 86 * z' = c20 * (x + d0) + c21 * (y + d1) + c22 * (z + d2) + const2 87 * 88 * Please note that above formula is true only for Blender CSC. Other DE3 CSC 89 * units takes only positive value for difference. From what can be deducted 90 * from BSP driver code, those units probably automatically assume that 91 * difference has to be subtracted. 92 * 93 * Layout of factors in table: 94 * c00 c01 c02 [d0 const0] 95 * c10 c11 c12 [d1 const1] 96 * c20 c21 c22 [d2 const2] 97 */ 98 99 static const u32 yuv2rgb_de3[2][2][12] = { 100 [DRM_COLOR_YCBCR_LIMITED_RANGE] = { 101 [DRM_COLOR_YCBCR_BT601] = { 102 0x0002542A, 0x00000000, 0x0003312A, 0xFFC00000, 103 0x0002542A, 0xFFFF376B, 0xFFFE5FC3, 0xFE000000, 104 0x0002542A, 0x000408D2, 0x00000000, 0xFE000000, 105 }, 106 [DRM_COLOR_YCBCR_BT709] = { 107 0x0002542A, 0x00000000, 0x000395E2, 0xFFC00000, 108 0x0002542A, 0xFFFF92D2, 0xFFFEEF27, 0xFE000000, 109 0x0002542A, 0x0004398C, 0x00000000, 0xFE000000, 110 } 111 }, 112 [DRM_COLOR_YCBCR_FULL_RANGE] = { 113 [DRM_COLOR_YCBCR_BT601] = { 114 0x00020000, 0x00000000, 0x0002CDD2, 0x00000000, 115 0x00020000, 0xFFFF4FCE, 0xFFFE925D, 0xFE000000, 116 0x00020000, 0x00038B43, 0x00000000, 0xFE000000, 117 }, 118 [DRM_COLOR_YCBCR_BT709] = { 119 0x00020000, 0x00000000, 0x0003264C, 0x00000000, 120 0x00020000, 0xFFFFA018, 0xFFFF1053, 0xFE000000, 121 0x00020000, 0x0003B611, 0x00000000, 0xFE000000, 122 } 123 }, 124 }; 125 126 static const u32 yvu2rgb_de3[2][2][12] = { 127 [DRM_COLOR_YCBCR_LIMITED_RANGE] = { 128 [DRM_COLOR_YCBCR_BT601] = { 129 0x0002542A, 0x0003312A, 0x00000000, 0xFFC00000, 130 0x0002542A, 0xFFFE5FC3, 0xFFFF376B, 0xFE000000, 131 0x0002542A, 0x00000000, 0x000408D2, 0xFE000000, 132 }, 133 [DRM_COLOR_YCBCR_BT709] = { 134 0x0002542A, 0x000395E2, 0x00000000, 0xFFC00000, 135 0x0002542A, 0xFFFEEF27, 0xFFFF92D2, 0xFE000000, 136 0x0002542A, 0x00000000, 0x0004398C, 0xFE000000, 137 } 138 }, 139 [DRM_COLOR_YCBCR_FULL_RANGE] = { 140 [DRM_COLOR_YCBCR_BT601] = { 141 0x00020000, 0x0002CDD2, 0x00000000, 0x00000000, 142 0x00020000, 0xFFFE925D, 0xFFFF4FCE, 0xFE000000, 143 0x00020000, 0x00000000, 0x00038B43, 0xFE000000, 144 }, 145 [DRM_COLOR_YCBCR_BT709] = { 146 0x00020000, 0x0003264C, 0x00000000, 0x00000000, 147 0x00020000, 0xFFFF1053, 0xFFFFA018, 0xFE000000, 148 0x00020000, 0x00000000, 0x0003B611, 0xFE000000, 149 } 150 }, 151 }; 152 153 static void sun8i_csc_set_coefficients(struct regmap *map, u32 base, 154 enum sun8i_csc_mode mode, 155 enum drm_color_encoding encoding, 156 enum drm_color_range range) 157 { 158 const u32 *table; 159 u32 base_reg; 160 161 switch (mode) { 162 case SUN8I_CSC_MODE_YUV2RGB: 163 table = yuv2rgb[range][encoding]; 164 break; 165 case SUN8I_CSC_MODE_YVU2RGB: 166 table = yvu2rgb[range][encoding]; 167 break; 168 default: 169 DRM_WARN("Wrong CSC mode specified.\n"); 170 return; 171 } 172 173 base_reg = SUN8I_CSC_COEFF(base, 0); 174 regmap_bulk_write(map, base_reg, table, 12); 175 } 176 177 static void sun8i_de3_ccsc_set_coefficients(struct regmap *map, int layer, 178 enum sun8i_csc_mode mode, 179 enum drm_color_encoding encoding, 180 enum drm_color_range range) 181 { 182 const u32 *table; 183 u32 base_reg; 184 185 switch (mode) { 186 case SUN8I_CSC_MODE_YUV2RGB: 187 table = yuv2rgb_de3[range][encoding]; 188 break; 189 case SUN8I_CSC_MODE_YVU2RGB: 190 table = yvu2rgb_de3[range][encoding]; 191 break; 192 default: 193 DRM_WARN("Wrong CSC mode specified.\n"); 194 return; 195 } 196 197 base_reg = SUN50I_MIXER_BLEND_CSC_COEFF(DE3_BLD_BASE, layer, 0, 0); 198 regmap_bulk_write(map, base_reg, table, 12); 199 } 200 201 static void sun8i_csc_enable(struct regmap *map, u32 base, bool enable) 202 { 203 u32 val; 204 205 if (enable) 206 val = SUN8I_CSC_CTRL_EN; 207 else 208 val = 0; 209 210 regmap_update_bits(map, SUN8I_CSC_CTRL(base), SUN8I_CSC_CTRL_EN, val); 211 } 212 213 static void sun8i_de3_ccsc_enable(struct regmap *map, int layer, bool enable) 214 { 215 u32 val, mask; 216 217 mask = SUN50I_MIXER_BLEND_CSC_CTL_EN(layer); 218 219 if (enable) 220 val = mask; 221 else 222 val = 0; 223 224 regmap_update_bits(map, SUN50I_MIXER_BLEND_CSC_CTL(DE3_BLD_BASE), 225 mask, val); 226 } 227 228 void sun8i_csc_set_ccsc_coefficients(struct sun8i_mixer *mixer, int layer, 229 enum sun8i_csc_mode mode, 230 enum drm_color_encoding encoding, 231 enum drm_color_range range) 232 { 233 u32 base; 234 235 if (mixer->cfg->is_de3) { 236 sun8i_de3_ccsc_set_coefficients(mixer->engine.regs, layer, 237 mode, encoding, range); 238 return; 239 } 240 241 base = ccsc_base[mixer->cfg->ccsc][layer]; 242 243 sun8i_csc_set_coefficients(mixer->engine.regs, base, 244 mode, encoding, range); 245 } 246 247 void sun8i_csc_enable_ccsc(struct sun8i_mixer *mixer, int layer, bool enable) 248 { 249 u32 base; 250 251 if (mixer->cfg->is_de3) { 252 sun8i_de3_ccsc_enable(mixer->engine.regs, layer, enable); 253 return; 254 } 255 256 base = ccsc_base[mixer->cfg->ccsc][layer]; 257 258 sun8i_csc_enable(mixer->engine.regs, base, enable); 259 } 260