drivers/gpu/drm/msm/mdp/mdp_format.c

   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
  37 static 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
  47 uint32_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
  62 const 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 }