drivers/gpu/drm/meson/meson_vclk.h

   1 /*
   2  * Copyright (C) 2016 BayLibre, SAS
   3  * Author: Neil Armstrong <narmstrong@baylibre.com>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of the
   8  * License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 /* Video Clock */
  20
  21 #ifndef __MESON_VCLK_H
  22 #define __MESON_VCLK_H
  23
  24 enum {
  25         MESON_VCLK_TARGET_CVBS = 0,
  26         MESON_VCLK_TARGET_HDMI = 1,
  27         MESON_VCLK_TARGET_DMT = 2,
  28 };
  29
  30 /* 27MHz is the CVBS Pixel Clock */
  31 #define MESON_VCLK_CVBS                 27000
  32
  33 enum drm_mode_status
  34 meson_vclk_dmt_supported_freq(struct meson_drm *priv, unsigned int freq);
  35 enum drm_mode_status
  36 meson_vclk_vic_supported_freq(unsigned int freq);
  37
  38 void meson_vclk_setup(struct meson_drm *priv, unsigned int target,
  39                       unsigned int vclk_freq, unsigned int venc_freq,
  40                       unsigned int dac_freq, bool hdmi_use_enci);
  41
  42 #endif /* __MESON_VCLK_H */