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drm/i915/cdclk: Factor out has_audio check in intel_audio_min_cdclk()

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All the if statements in intel_audio_min_cdclk() check for
has_audio==true. Check that once ahead of time to make
things a bit simpler.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241029215217.3697-6-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä
2024-10-29 23:52:11 +02:00
parent 47410efe26
commit 64b19d63df
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/i915/display/intel_audio.c
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@@ -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;