diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_audio.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_audio.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c index 82c45b24417a..af0bfdc44072 100644 --- a/drivers/gpu/drm/i915/display/intel_audio.c +++ b/drivers/gpu/drm/i915/display/intel_audio.c @@ -984,13 +984,15 @@ int intel_audio_min_cdclk(const struct intel_crtc_state *crtc_state) struct drm_i915_private *dev_priv = to_i915(display->drm); int min_cdclk = 0; + if (!crtc_state->has_audio) + return 0; + /* BSpec says "Do not use DisplayPort with CDCLK less than 432 MHz, * audio enabled, port width x4, and link rate HBR2 (5.4 GHz), or else * there may be audio corruption or screen corruption." This cdclk * restriction for GLK is 316.8 MHz. */ if (intel_crtc_has_dp_encoder(crtc_state) && - crtc_state->has_audio && crtc_state->port_clock >= 540000 && crtc_state->lane_count == 4) { if (DISPLAY_VER(display) == 10) { @@ -1006,7 +1008,7 @@ int intel_audio_min_cdclk(const struct intel_crtc_state *crtc_state) * According to BSpec, "The CD clock frequency must be at least twice * the frequency of the Azalia BCLK." and BCLK is 96 MHz by default. */ - if (crtc_state->has_audio && DISPLAY_VER(display) >= 9) + if (DISPLAY_VER(display) >= 9) min_cdclk = max(2 * 96000, min_cdclk); /* @@ -1017,7 +1019,7 @@ int intel_audio_min_cdclk(const struct intel_crtc_state *crtc_state) * 162 | 200 or higher" */ if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) && - intel_crtc_has_dp_encoder(crtc_state) && crtc_state->has_audio) + intel_crtc_has_dp_encoder(crtc_state)) min_cdclk = max(crtc_state->port_clock, min_cdclk); return min_cdclk; |