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73 lines
2.3 KiB
Diff
73 lines
2.3 KiB
Diff
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From 3e45488069e20b07b83d8cbba88c7fa2b205e559 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Wed, 25 Mar 2020 18:01:04 +0000
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Subject: [PATCH] drm/vc4: Reset audio infoframe on encoder_enable if
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previously streaming
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If the encoder is disabled and re-enabled (eg mode change) all infoframes
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are reset, whilst the audio subsystem know nothing about this change.
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The driver therefore needs to reinstate the audio infoframe for
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itself.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/gpu/drm/vc4/vc4_hdmi.c | 12 ++++++++++++
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drivers/gpu/drm/vc4/vc4_hdmi.h | 2 ++
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2 files changed, 14 insertions(+)
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--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
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+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
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@@ -344,8 +344,16 @@ static void vc4_hdmi_set_audio_infoframe
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static void vc4_hdmi_set_infoframes(struct drm_encoder *encoder)
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{
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+ struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
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+
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vc4_hdmi_set_avi_infoframe(encoder);
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vc4_hdmi_set_spd_infoframe(encoder);
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+ /*
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+ * If audio was streaming, then we need to reenabled the audio
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+ * infoframe here during encoder_enable.
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+ */
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+ if (vc4_hdmi->audio.streaming)
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+ vc4_hdmi_set_audio_infoframe(encoder);
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}
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static void vc4_hdmi_encoder_disable(struct drm_encoder *encoder)
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@@ -825,6 +833,7 @@ static void vc4_hdmi_audio_reset(struct
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struct device *dev = &vc4_hdmi->pdev->dev;
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int ret;
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+ vc4_hdmi->audio.streaming = false;
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ret = vc4_hdmi_stop_packet(encoder, HDMI_INFOFRAME_TYPE_AUDIO);
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if (ret)
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dev_err(dev, "Failed to stop audio infoframe: %d\n", ret);
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@@ -928,6 +937,7 @@ static int vc4_hdmi_audio_trigger(struct
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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vc4_hdmi_set_audio_infoframe(encoder);
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+ vc4_hdmi->audio.streaming = true;
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if (vc4_hdmi->variant->phy_rng_enable)
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vc4_hdmi->variant->phy_rng_enable(vc4_hdmi);
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@@ -946,6 +956,8 @@ static int vc4_hdmi_audio_trigger(struct
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if (vc4_hdmi->variant->phy_rng_disable)
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vc4_hdmi->variant->phy_rng_disable(vc4_hdmi);
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+ vc4_hdmi->audio.streaming = false;
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+
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break;
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default:
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break;
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--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
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+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
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@@ -101,6 +101,8 @@ struct vc4_hdmi_audio {
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int channels;
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struct snd_dmaengine_dai_dma_data dma_data;
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struct snd_pcm_substream *substream;
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+
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+ bool streaming;
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};
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/* General HDMI hardware state. */
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