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openmptcprouter/root/target/linux/bcm27xx/patches-5.14/0440-drm-vc4-enable-HBR-MAI-format-on-HBR-streams.patch
Ycarus (Yannick Chabanois) 5c593832cc Add 5.14 patches for RPI
2021-10-01 16:58:58 +02:00

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From dac328c8ff03d99b9fa61ce8c6d7bb36607c1e4d Mon Sep 17 00:00:00 2001
From: Dom Cobley <popcornmix@gmail.com>
Date: Fri, 10 Jul 2020 11:51:16 +0100
Subject: [PATCH 440/552] drm/vc4: enable HBR MAI format on HBR streams
Signed-off-by: Matthias Reichl <hias@horus.com>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 440a5e6429fd..53c22a0f069e 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1360,7 +1360,11 @@ static int vc4_hdmi_audio_prepare(struct snd_pcm_substream *substream,
vc4_hdmi_audio_set_mai_clock(vc4_hdmi);
mai_sample_rate = sample_rate_to_mai_fmt(vc4_hdmi->audio.samplerate);
- mai_audio_format = VC4_HDMI_MAI_FORMAT_PCM;
+ if (vc4_hdmi->audio.iec_status[0] & IEC958_AES0_NONAUDIO &&
+ vc4_hdmi->audio.channels == 8)
+ mai_audio_format = VC4_HDMI_MAI_FORMAT_HBR;
+ else
+ mai_audio_format = VC4_HDMI_MAI_FORMAT_PCM;
HDMI_WRITE(HDMI_MAI_FMT,
VC4_SET_FIELD(mai_sample_rate,
VC4_HDMI_MAI_FORMAT_SAMPLE_RATE) |
--
2.33.0