LXR linux/drivers/gpu/drm/msm/mdp/mdp

   1/*
   2 * Copyright (C) 2013 Red Hat
   3 * Author: Rob Clark <robdclark@gmail.com>
   4 *
   5 * This program is free software; you can redistribute it and/or modify it
   6 * under the terms of the GNU General Public License version 2 as published by
   7 * the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope that it will be useful, but WITHOUT
  10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 * more details.
  13 *
  14 * You should have received a copy of the GNU General Public License along with
  15 * this program.  If not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18
  19#include "msm_drv.h"
  20#include "mdp_kms.h"
  21
  22#define FMT(name, a, r, g, b, e0, e1, e2, e3, alpha, tight, c, cnt) { \
  23                .base = { .pixel_format = DRM_FORMAT_ ## name }, \
  24                .bpc_a = BPC ## a ## A,                          \
  25                .bpc_r = BPC ## r,                               \
  26                .bpc_g = BPC ## g,                               \
  27                .bpc_b = BPC ## b,                               \
  28                .unpack = { e0, e1, e2, e3 },                    \
  29                .alpha_enable = alpha,                           \
  30                .unpack_tight = tight,                           \
  31                .cpp = c,                                        \
  32                .unpack_count = cnt,                             \
  33        }
  34
  35#define BPC0A 0
  36
  37static const struct mdp_format formats[] = {
  38        /*  name      a  r  g  b   e0 e1 e2 e3  alpha   tight  cpp cnt */
  39        FMT(ARGB8888, 8, 8, 8, 8,  1, 0, 2, 3,  true,   true,  4,  4),
  40        FMT(XRGB8888, 8, 8, 8, 8,  1, 0, 2, 3,  false,  true,  4,  4),
  41        FMT(RGB888,   0, 8, 8, 8,  1, 0, 2, 0,  false,  true,  3,  3),
  42        FMT(BGR888,   0, 8, 8, 8,  2, 0, 1, 0,  false,  true,  3,  3),
  43        FMT(RGB565,   0, 5, 6, 5,  1, 0, 2, 0,  false,  true,  2,  3),
  44        FMT(BGR565,   0, 5, 6, 5,  2, 0, 1, 0,  false,  true,  2,  3),
  45};
  46
  47uint32_t mdp_get_formats(uint32_t *pixel_formats, uint32_t max_formats)
  48{
  49        uint32_t i;
  50        for (i = 0; i < ARRAY_SIZE(formats); i++) {
  51                const struct mdp_format *f = &formats[i];
  52
  53                if (i == max_formats)
  54                        break;
  55
  56                pixel_formats[i] = f->base.pixel_format;
  57        }
  58
  59        return i;
  60}
  61
  62const struct msm_format *mdp_get_format(struct msm_kms *kms, uint32_t format)
  63{
  64        int i;
  65        for (i = 0; i < ARRAY_SIZE(formats); i++) {
  66                const struct mdp_format *f = &formats[i];
  67                if (f->base.pixel_format == format)
  68                        return &f->base;
  69        }
  70        return NULL;
  71}
  72