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2024-01-31 f70575805708cabdedea7498aaa3f710fde4d920 
 kernel/drivers/gpu/drm/sun4i/sun8i_csc.c
....@@ -1,13 +1,9 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * Copyright (C) Jernej Skrabec <jernej.skrabec@siol.net>
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; either version 2 of
7
- * the License, or (at your option) any later version.
84  */
95 
10
-#include <drm/drmP.h>
6
+#include <drm/drm_print.h>
117 
128 #include "sun8i_csc.h"
139 #include "sun8i_mixer.h"
....@@ -22,43 +18,184 @@
2218  * First tree values in each line are multiplication factor and last
2319  * value is constant, which is added at the end.
2420  */
25
-static const u32 yuv2rgb[] = {
26
-	0x000004A8, 0x00000000, 0x00000662, 0xFFFC845A,
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-	0x000004A8, 0xFFFFFE6F, 0xFFFFFCBF, 0x00021DF4,
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-	0x000004A8, 0x00000813, 0x00000000, 0xFFFBAC4A,
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+
22
+static const u32 yuv2rgb[2][2][12] = {
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+	[DRM_COLOR_YCBCR_LIMITED_RANGE] = {
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+		[DRM_COLOR_YCBCR_BT601] = {
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+			0x000004A8, 0x00000000, 0x00000662, 0xFFFC8451,
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+			0x000004A8, 0xFFFFFE6F, 0xFFFFFCC0, 0x00021E4D,
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+			0x000004A8, 0x00000811, 0x00000000, 0xFFFBACA9,
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+		},
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+		[DRM_COLOR_YCBCR_BT709] = {
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+			0x000004A8, 0x00000000, 0x0000072B, 0xFFFC1F99,
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+			0x000004A8, 0xFFFFFF26, 0xFFFFFDDF, 0x00013383,
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+			0x000004A8, 0x00000873, 0x00000000, 0xFFFB7BEF,
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+		}
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+	},
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+	[DRM_COLOR_YCBCR_FULL_RANGE] = {
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+		[DRM_COLOR_YCBCR_BT601] = {
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+			0x00000400, 0x00000000, 0x0000059B, 0xFFFD322E,
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+			0x00000400, 0xFFFFFEA0, 0xFFFFFD25, 0x00021DD5,
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+			0x00000400, 0x00000716, 0x00000000, 0xFFFC74BD,
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+		},
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+		[DRM_COLOR_YCBCR_BT709] = {
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+			0x00000400, 0x00000000, 0x0000064C, 0xFFFCD9B4,
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+			0x00000400, 0xFFFFFF41, 0xFFFFFE21, 0x00014F96,
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+			0x00000400, 0x0000076C, 0x00000000, 0xFFFC49EF,
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+		}
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+	},
2947 };
3048 
31
-static const u32 yvu2rgb[] = {
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-	0x000004A8, 0x00000662, 0x00000000, 0xFFFC845A,
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-	0x000004A8, 0xFFFFFCBF, 0xFFFFFE6F, 0x00021DF4,
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-	0x000004A8, 0x00000000, 0x00000813, 0xFFFBAC4A,
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+static const u32 yvu2rgb[2][2][12] = {
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+	[DRM_COLOR_YCBCR_LIMITED_RANGE] = {
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+		[DRM_COLOR_YCBCR_BT601] = {
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+			0x000004A8, 0x00000662, 0x00000000, 0xFFFC8451,
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+			0x000004A8, 0xFFFFFCC0, 0xFFFFFE6F, 0x00021E4D,
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+			0x000004A8, 0x00000000, 0x00000811, 0xFFFBACA9,
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+		},
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+		[DRM_COLOR_YCBCR_BT709] = {
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+			0x000004A8, 0x0000072B, 0x00000000, 0xFFFC1F99,
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+			0x000004A8, 0xFFFFFDDF, 0xFFFFFF26, 0x00013383,
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+			0x000004A8, 0x00000000, 0x00000873, 0xFFFB7BEF,
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+		}
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+	},
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+	[DRM_COLOR_YCBCR_FULL_RANGE] = {
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+		[DRM_COLOR_YCBCR_BT601] = {
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+			0x00000400, 0x0000059B, 0x00000000, 0xFFFD322E,
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+			0x00000400, 0xFFFFFD25, 0xFFFFFEA0, 0x00021DD5,
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+			0x00000400, 0x00000000, 0x00000716, 0xFFFC74BD,
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+		},
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+		[DRM_COLOR_YCBCR_BT709] = {
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+			0x00000400, 0x0000064C, 0x00000000, 0xFFFCD9B4,
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+			0x00000400, 0xFFFFFE21, 0xFFFFFF41, 0x00014F96,
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+			0x00000400, 0x00000000, 0x0000076C, 0xFFFC49EF,
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+		}
73
+	},
74
+};
75
+
76
+/*
77
+ * DE3 has a bit different CSC units. Factors are in two's complement format.
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+ * First three factors in a row are multiplication factors which have 17 bits
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+ * for fractional part. Fourth value in a row is comprised of two factors.
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+ * Upper 16 bits represents difference, which is subtracted from the input
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+ * value before multiplication and lower 16 bits represents constant, which
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+ * is addes at the end.
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+ *
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+ * x' = c00 * (x + d0) + c01 * (y + d1) + c02 * (z + d2) + const0
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+ * y' = c10 * (x + d0) + c11 * (y + d1) + c12 * (z + d2) + const1
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+ * z' = c20 * (x + d0) + c21 * (y + d1) + c22 * (z + d2) + const2
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+ *
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+ * Please note that above formula is true only for Blender CSC. Other DE3 CSC
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+ * units takes only positive value for difference. From what can be deducted
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+ * from BSP driver code, those units probably automatically assume that
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+ * difference has to be subtracted.
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+ *
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+ * Layout of factors in table:
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+ * c00 c01 c02 [d0 const0]
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+ * c10 c11 c12 [d1 const1]
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+ * c20 c21 c22 [d2 const2]
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+ */
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+
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+static const u32 yuv2rgb_de3[2][2][12] = {
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+	[DRM_COLOR_YCBCR_LIMITED_RANGE] = {
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+		[DRM_COLOR_YCBCR_BT601] = {
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+			0x0002542A, 0x00000000, 0x0003312A, 0xFFC00000,
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+			0x0002542A, 0xFFFF376B, 0xFFFE5FC3, 0xFE000000,
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+			0x0002542A, 0x000408D2, 0x00000000, 0xFE000000,
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+		},
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+		[DRM_COLOR_YCBCR_BT709] = {
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+			0x0002542A, 0x00000000, 0x000395E2, 0xFFC00000,
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+			0x0002542A, 0xFFFF92D2, 0xFFFEEF27, 0xFE000000,
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+			0x0002542A, 0x0004398C, 0x00000000, 0xFE000000,
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+		}
111
+	},
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+	[DRM_COLOR_YCBCR_FULL_RANGE] = {
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+		[DRM_COLOR_YCBCR_BT601] = {
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+			0x00020000, 0x00000000, 0x0002CDD2, 0x00000000,
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+			0x00020000, 0xFFFF4FCE, 0xFFFE925D, 0xFE000000,
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+			0x00020000, 0x00038B43, 0x00000000, 0xFE000000,
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+		},
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+		[DRM_COLOR_YCBCR_BT709] = {
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+			0x00020000, 0x00000000, 0x0003264C, 0x00000000,
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+			0x00020000, 0xFFFFA018, 0xFFFF1053, 0xFE000000,
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+			0x00020000, 0x0003B611, 0x00000000, 0xFE000000,
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+		}
123
+	},
124
+};
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+
126
+static const u32 yvu2rgb_de3[2][2][12] = {
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+	[DRM_COLOR_YCBCR_LIMITED_RANGE] = {
128
+		[DRM_COLOR_YCBCR_BT601] = {
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+			0x0002542A, 0x0003312A, 0x00000000, 0xFFC00000,
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+			0x0002542A, 0xFFFE5FC3, 0xFFFF376B, 0xFE000000,
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+			0x0002542A, 0x00000000, 0x000408D2, 0xFE000000,
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+		},
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+		[DRM_COLOR_YCBCR_BT709] = {
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+			0x0002542A, 0x000395E2, 0x00000000, 0xFFC00000,
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+			0x0002542A, 0xFFFEEF27, 0xFFFF92D2, 0xFE000000,
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+			0x0002542A, 0x00000000, 0x0004398C, 0xFE000000,
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+		}
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+	},
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+	[DRM_COLOR_YCBCR_FULL_RANGE] = {
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+		[DRM_COLOR_YCBCR_BT601] = {
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+			0x00020000, 0x0002CDD2, 0x00000000, 0x00000000,
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+			0x00020000, 0xFFFE925D, 0xFFFF4FCE, 0xFE000000,
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+			0x00020000, 0x00000000, 0x00038B43, 0xFE000000,
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+		},
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+		[DRM_COLOR_YCBCR_BT709] = {
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+			0x00020000, 0x0003264C, 0x00000000, 0x00000000,
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+			0x00020000, 0xFFFF1053, 0xFFFFA018, 0xFE000000,
148
+			0x00020000, 0x00000000, 0x0003B611, 0xFE000000,
149
+		}
150
+	},
35151 };
36152 
37153 static void sun8i_csc_set_coefficients(struct regmap *map, u32 base,
38
-				       enum sun8i_csc_mode mode)
154
+				       enum sun8i_csc_mode mode,
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+				       enum drm_color_encoding encoding,
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+				       enum drm_color_range range)
39157 {
40158 	const u32 *table;
41
-	int i, data;
159
+	u32 base_reg;
42160 
43161 	switch (mode) {
44162 	case SUN8I_CSC_MODE_YUV2RGB:
45
-		table = yuv2rgb;
163
+		table = yuv2rgb[range][encoding];
46164 		break;
47165 	case SUN8I_CSC_MODE_YVU2RGB:
48
-		table = yvu2rgb;
166
+		table = yvu2rgb[range][encoding];
49167 		break;
50168 	default:
51169 		DRM_WARN("Wrong CSC mode specified.\n");
52170 		return;
53171 	}
54172 
55
-	for (i = 0; i < 12; i++) {
56
-		data = table[i];
57
-		/* For some reason, 0x200 must be added to constant parts */
58
-		if (((i + 1) & 3) == 0)
59
-			data += 0x200;
60
-		regmap_write(map, SUN8I_CSC_COEFF(base, i), data);
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,
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+					    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:
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+		DRM_WARN("Wrong CSC mode specified.\n");
194
+		return;
61195 	}
196
+
197
+	base_reg = SUN50I_MIXER_BLEND_CSC_COEFF(DE3_BLD_BASE, layer, 0, 0);
198
+	regmap_bulk_write(map, base_reg, table, 12);
62199 }
63200 
64201 static void sun8i_csc_enable(struct regmap *map, u32 base, bool enable)
....@@ -73,20 +210,49 @@
73210 	regmap_update_bits(map, SUN8I_CSC_CTRL(base), SUN8I_CSC_CTRL_EN, val);
74211 }
75212 
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
+
76228 void sun8i_csc_set_ccsc_coefficients(struct sun8i_mixer *mixer, int layer,
77
-				     enum sun8i_csc_mode mode)
229
+				     enum sun8i_csc_mode mode,
230
+				     enum drm_color_encoding encoding,
231
+				     enum drm_color_range range)
78232 {
79233 	u32 base;
80234 
235
+	if (mixer->cfg->is_de3) {
236
+		sun8i_de3_ccsc_set_coefficients(mixer->engine.regs, layer,
237
+						mode, encoding, range);
238
+		return;
239
+	}
240
+
81241 	base = ccsc_base[mixer->cfg->ccsc][layer];
82242 
83
-	sun8i_csc_set_coefficients(mixer->engine.regs, base, mode);
243
+	sun8i_csc_set_coefficients(mixer->engine.regs, base,
244
+				   mode, encoding, range);
84245 }
85246 
86247 void sun8i_csc_enable_ccsc(struct sun8i_mixer *mixer, int layer, bool enable)
87248 {
88249 	u32 base;
89250 
251
+	if (mixer->cfg->is_de3) {
252
+		sun8i_de3_ccsc_enable(mixer->engine.regs, layer, enable);
253
+		return;
254
+	}
255
+
90256 	base = ccsc_base[mixer->cfg->ccsc][layer];
91257 
92258 	sun8i_csc_enable(mixer->engine.regs, base, enable);