drivers/gpu/drm/meson/meson_vclk.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2016 BayLibre, SAS
   4  * Author: Neil Armstrong <narmstrong@baylibre.com>
   5  */
   6
   7 /* Video Clock */
   8
   9 #ifndef __MESON_VCLK_H
  10 #define __MESON_VCLK_H
  11
  12 #include <drm/drm_modes.h>
  13
  14 struct meson_drm;
  15
  16 enum {
  17         MESON_VCLK_TARGET_CVBS = 0,
  18         MESON_VCLK_TARGET_HDMI = 1,
  19         MESON_VCLK_TARGET_DMT = 2,
  20 };
  21
  22 /* 27MHz is the CVBS Pixel Clock */
  23 #define MESON_VCLK_CVBS                 27000
  24
  25 enum drm_mode_status
  26 meson_vclk_dmt_supported_freq(struct meson_drm *priv, unsigned int freq);
  27 enum drm_mode_status
  28 meson_vclk_vic_supported_freq(unsigned int freq);
  29
  30 void meson_vclk_setup(struct meson_drm *priv, unsigned int target,
  31                       unsigned int vclk_freq, unsigned int venc_freq,
  32                       unsigned int dac_freq, bool hdmi_use_enci);
  33
  34 #endif /* __MESON_VCLK_H */