Gen12 hardware supports HDMI audio pixel clocks of 296.7/297Mhz
and 593.4/594Mhz. Add the missing rates and add logic to ignore
them if running on older hardware.
Bspec: 49333
Signed-off-by: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx>
Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_audio.c | 8 ++++++++
drivers/gpu/drm/i915/i915_reg.h | 4 ++++
2 files changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index 19bf206037c2..62f234f641de 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -149,6 +149,10 @@ static const struct {
{ 74250, AUD_CONFIG_PIXEL_CLOCK_HDMI_74250 },
{ 148352, AUD_CONFIG_PIXEL_CLOCK_HDMI_148352 },
{ 148500, AUD_CONFIG_PIXEL_CLOCK_HDMI_148500 },
+ { 296703, AUD_CONFIG_PIXEL_CLOCK_HDMI_296703 },
+ { 297000, AUD_CONFIG_PIXEL_CLOCK_HDMI_297000 },
+ { 593407, AUD_CONFIG_PIXEL_CLOCK_HDMI_593407 },
+ { 594000, AUD_CONFIG_PIXEL_CLOCK_HDMI_594000 },
};
/* HDMI N/CTS table */
@@ -234,6 +238,7 @@ static const struct hdmi_aud_ncts hdmi_aud_ncts_36bpp[] = {
/* get AUD_CONFIG_PIXEL_CLOCK_HDMI_* value for mode */
static u32 audio_config_hdmi_pixel_clock(const struct intel_crtc_state *crtc_state)
{
+ struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
const struct drm_display_mode *adjusted_mode =
&crtc_state->hw.adjusted_mode;
int i;
@@ -243,6 +248,9 @@ static u32 audio_config_hdmi_pixel_clock(const struct intel_crtc_state *crtc_sta
break;
}
+ if (INTEL_GEN(dev_priv) < 12 && adjusted_mode->crtc_clock > 148500)
+ i = ARRAY_SIZE(hdmi_audio_clock);
+
if (i == ARRAY_SIZE(hdmi_audio_clock)) {
DRM_DEBUG_KMS("HDMI audio pixel clock setting for %d not found, falling back to defaults\n",
adjusted_mode->crtc_clock);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 79ae9654dac9..ee4a75ac9186 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -9251,6 +9251,10 @@ enum {
#define AUD_CONFIG_PIXEL_CLOCK_HDMI_74250 (7 << 16)
#define AUD_CONFIG_PIXEL_CLOCK_HDMI_148352 (8 << 16)
#define AUD_CONFIG_PIXEL_CLOCK_HDMI_148500 (9 << 16)
+#define AUD_CONFIG_PIXEL_CLOCK_HDMI_296703 (10 << 16)
+#define AUD_CONFIG_PIXEL_CLOCK_HDMI_297000 (11 << 16)
+#define AUD_CONFIG_PIXEL_CLOCK_HDMI_593407 (12 << 16)
+#define AUD_CONFIG_PIXEL_CLOCK_HDMI_594000 (13 << 16)
#define AUD_CONFIG_DISABLE_NCTS (1 << 3)
/* HSW Audio */
--
2.17.1
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