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0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * Copyright (c) 2014 The Linux Foundation. All rights reserved.
0004  * Copyright (C) 2013 Red Hat
0005  * Author: Rob Clark <robdclark@gmail.com>
0006  */
0007 
0008 #include <drm/drm_fourcc.h>
0009 #include <drm/drm_framebuffer.h>
0010 
0011 #include "msm_drv.h"
0012 #include "mdp_kms.h"
0013 
0014 static struct csc_cfg csc_convert[CSC_MAX] = {
0015     [CSC_RGB2RGB] = {
0016         .type = CSC_RGB2RGB,
0017         .matrix = {
0018             0x0200, 0x0000, 0x0000,
0019             0x0000, 0x0200, 0x0000,
0020             0x0000, 0x0000, 0x0200
0021         },
0022         .pre_bias = { 0x0, 0x0, 0x0 },
0023         .post_bias =    { 0x0, 0x0, 0x0 },
0024         .pre_clamp =    { 0x0, 0xff, 0x0, 0xff, 0x0, 0xff },
0025         .post_clamp =   { 0x0, 0xff, 0x0, 0xff, 0x0, 0xff },
0026     },
0027     [CSC_YUV2RGB] = {
0028         .type = CSC_YUV2RGB,
0029         .matrix = {
0030             0x0254, 0x0000, 0x0331,
0031             0x0254, 0xff37, 0xfe60,
0032             0x0254, 0x0409, 0x0000
0033         },
0034         .pre_bias = { 0xfff0, 0xff80, 0xff80 },
0035         .post_bias =    { 0x00, 0x00, 0x00 },
0036         .pre_clamp =    { 0x00, 0xff, 0x00, 0xff, 0x00, 0xff },
0037         .post_clamp =   { 0x00, 0xff, 0x00, 0xff, 0x00, 0xff },
0038     },
0039     [CSC_RGB2YUV] = {
0040         .type = CSC_RGB2YUV,
0041         .matrix = {
0042             0x0083, 0x0102, 0x0032,
0043             0x1fb5, 0x1f6c, 0x00e1,
0044             0x00e1, 0x1f45, 0x1fdc
0045         },
0046         .pre_bias = { 0x00, 0x00, 0x00 },
0047         .post_bias =    { 0x10, 0x80, 0x80 },
0048         .pre_clamp =    { 0x00, 0xff, 0x00, 0xff, 0x00, 0xff },
0049         .post_clamp =   { 0x10, 0xeb, 0x10, 0xf0, 0x10, 0xf0 },
0050     },
0051     [CSC_YUV2YUV] = {
0052         .type = CSC_YUV2YUV,
0053         .matrix = {
0054             0x0200, 0x0000, 0x0000,
0055             0x0000, 0x0200, 0x0000,
0056             0x0000, 0x0000, 0x0200
0057         },
0058         .pre_bias = { 0x00, 0x00, 0x00 },
0059         .post_bias =    { 0x00, 0x00, 0x00 },
0060         .pre_clamp =    { 0x00, 0xff, 0x00, 0xff, 0x00, 0xff },
0061         .post_clamp =   { 0x00, 0xff, 0x00, 0xff, 0x00, 0xff },
0062     },
0063 };
0064 
0065 #define FMT(name, a, r, g, b, e0, e1, e2, e3, alpha, tight, c, cnt, fp, cs, yuv) { \
0066         .base = { .pixel_format = DRM_FORMAT_ ## name }, \
0067         .bpc_a = BPC ## a ## A,                          \
0068         .bpc_r = BPC ## r,                               \
0069         .bpc_g = BPC ## g,                               \
0070         .bpc_b = BPC ## b,                               \
0071         .unpack = { e0, e1, e2, e3 },                    \
0072         .alpha_enable = alpha,                           \
0073         .unpack_tight = tight,                           \
0074         .cpp = c,                                        \
0075         .unpack_count = cnt,                             \
0076         .fetch_type = fp,                                \
0077         .chroma_sample = cs,                             \
0078         .is_yuv = yuv,                                   \
0079 }
0080 
0081 #define BPC0A 0
0082 
0083 /*
0084  * Note: Keep RGB formats 1st, followed by YUV formats to avoid breaking
0085  * mdp_get_rgb_formats()'s implementation.
0086  */
0087 static const struct mdp_format formats[] = {
0088     /*  name      a  r  g  b   e0 e1 e2 e3  alpha   tight  cpp cnt ... */
0089     FMT(ARGB8888, 8, 8, 8, 8,  1, 0, 2, 3,  true,   true,  4,  4,
0090             MDP_PLANE_INTERLEAVED, CHROMA_FULL, false),
0091     FMT(ABGR8888, 8, 8, 8, 8,  2, 0, 1, 3,  true,   true,  4,  4,
0092             MDP_PLANE_INTERLEAVED, CHROMA_FULL, false),
0093     FMT(RGBA8888, 8, 8, 8, 8,  3, 1, 0, 2,  true,   true,  4,  4,
0094             MDP_PLANE_INTERLEAVED, CHROMA_FULL, false),
0095     FMT(BGRA8888, 8, 8, 8, 8,  3, 2, 0, 1,  true,   true,  4,  4,
0096             MDP_PLANE_INTERLEAVED, CHROMA_FULL, false),
0097     FMT(XRGB8888, 8, 8, 8, 8,  1, 0, 2, 3,  false,  true,  4,  4,
0098             MDP_PLANE_INTERLEAVED, CHROMA_FULL, false),
0099     FMT(XBGR8888, 8, 8, 8, 8,  2, 0, 1, 3,  false,   true,  4,  4,
0100             MDP_PLANE_INTERLEAVED, CHROMA_FULL, false),
0101     FMT(RGBX8888, 8, 8, 8, 8,  3, 1, 0, 2,  false,   true,  4,  4,
0102             MDP_PLANE_INTERLEAVED, CHROMA_FULL, false),
0103     FMT(BGRX8888, 8, 8, 8, 8,  3, 2, 0, 1,  false,   true,  4,  4,
0104             MDP_PLANE_INTERLEAVED, CHROMA_FULL, false),
0105     FMT(RGB888,   0, 8, 8, 8,  1, 0, 2, 0,  false,  true,  3,  3,
0106             MDP_PLANE_INTERLEAVED, CHROMA_FULL, false),
0107     FMT(BGR888,   0, 8, 8, 8,  2, 0, 1, 0,  false,  true,  3,  3,
0108             MDP_PLANE_INTERLEAVED, CHROMA_FULL, false),
0109     FMT(RGB565,   0, 5, 6, 5,  1, 0, 2, 0,  false,  true,  2,  3,
0110             MDP_PLANE_INTERLEAVED, CHROMA_FULL, false),
0111     FMT(BGR565,   0, 5, 6, 5,  2, 0, 1, 0,  false,  true,  2,  3,
0112             MDP_PLANE_INTERLEAVED, CHROMA_FULL, false),
0113 
0114     /* --- RGB formats above / YUV formats below this line --- */
0115 
0116     /* 2 plane YUV */
0117     FMT(NV12,     0, 8, 8, 8,  1, 2, 0, 0,  false,  true,  2, 2,
0118             MDP_PLANE_PSEUDO_PLANAR, CHROMA_420, true),
0119     FMT(NV21,     0, 8, 8, 8,  2, 1, 0, 0,  false,  true,  2, 2,
0120             MDP_PLANE_PSEUDO_PLANAR, CHROMA_420, true),
0121     FMT(NV16,     0, 8, 8, 8,  1, 2, 0, 0,  false,  true,  2, 2,
0122             MDP_PLANE_PSEUDO_PLANAR, CHROMA_H2V1, true),
0123     FMT(NV61,     0, 8, 8, 8,  2, 1, 0, 0,  false,  true,  2, 2,
0124             MDP_PLANE_PSEUDO_PLANAR, CHROMA_H2V1, true),
0125     /* 1 plane YUV */
0126     FMT(VYUY,     0, 8, 8, 8,  2, 0, 1, 0,  false,  true,  2, 4,
0127             MDP_PLANE_INTERLEAVED, CHROMA_H2V1, true),
0128     FMT(UYVY,     0, 8, 8, 8,  1, 0, 2, 0,  false,  true,  2, 4,
0129             MDP_PLANE_INTERLEAVED, CHROMA_H2V1, true),
0130     FMT(YUYV,     0, 8, 8, 8,  0, 1, 0, 2,  false,  true,  2, 4,
0131             MDP_PLANE_INTERLEAVED, CHROMA_H2V1, true),
0132     FMT(YVYU,     0, 8, 8, 8,  0, 2, 0, 1,  false,  true,  2, 4,
0133             MDP_PLANE_INTERLEAVED, CHROMA_H2V1, true),
0134     /* 3 plane YUV */
0135     FMT(YUV420,   0, 8, 8, 8,  2, 1, 0, 0,  false,  true,  1, 1,
0136             MDP_PLANE_PLANAR, CHROMA_420, true),
0137     FMT(YVU420,   0, 8, 8, 8,  1, 2, 0, 0,  false,  true,  1, 1,
0138             MDP_PLANE_PLANAR, CHROMA_420, true),
0139 };
0140 
0141 /*
0142  * Note:
0143  * @rgb_only must be set to true, when requesting
0144  * supported formats for RGB pipes.
0145  */
0146 uint32_t mdp_get_formats(uint32_t *pixel_formats, uint32_t max_formats,
0147         bool rgb_only)
0148 {
0149     uint32_t i;
0150     for (i = 0; i < ARRAY_SIZE(formats); i++) {
0151         const struct mdp_format *f = &formats[i];
0152 
0153         if (i == max_formats)
0154             break;
0155 
0156         if (rgb_only && MDP_FORMAT_IS_YUV(f))
0157             break;
0158 
0159         pixel_formats[i] = f->base.pixel_format;
0160     }
0161 
0162     return i;
0163 }
0164 
0165 const struct msm_format *mdp_get_format(struct msm_kms *kms, uint32_t format,
0166         uint64_t modifier)
0167 {
0168     int i;
0169     for (i = 0; i < ARRAY_SIZE(formats); i++) {
0170         const struct mdp_format *f = &formats[i];
0171         if (f->base.pixel_format == format)
0172             return &f->base;
0173     }
0174     return NULL;
0175 }
0176 
0177 struct csc_cfg *mdp_get_default_csc_cfg(enum csc_type type)
0178 {
0179     if (WARN_ON(type >= CSC_MAX))
0180         return NULL;
0181 
0182     return &csc_convert[type];
0183 }
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