From: Dave Stevenson <dave.steven...@raspberrypi.com>
If the encoder is disabled and re-enabled (eg mode change) all infoframes
are reset, whilst the audio subsystem know nothing about this change.
The driver therefore needs to reinstate the audio infoframe for
itself.
Tested-by: Chanwoo Choi <cw00.c...@samsung.com>
Tested-by: Hoegeun Kwon <hoegeun.k...@samsung.com>
Tested-by: Stefan Wahren <stefan.wah...@i2se.com>
Signed-off-by: Dave Stevenson <dave.steven...@raspberrypi.com>
Signed-off-by: Maxime Ripard <max...@cerno.tech>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 12 ++++++++++++
drivers/gpu/drm/vc4/vc4_hdmi.h | 2 ++
2 files changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 53c3b5ae1179..43e59466b1d8 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -308,8 +308,16 @@ static void vc4_hdmi_set_audio_infoframe(struct
drm_encoder *encoder)
static void vc4_hdmi_set_infoframes(struct drm_encoder *encoder)
{
+ struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+
vc4_hdmi_set_avi_infoframe(encoder);
vc4_hdmi_set_spd_infoframe(encoder);
+ /*
+ * If audio was streaming, then we need to reenabled the audio
+ * infoframe here during encoder_enable.
+ */
+ if (vc4_hdmi->audio.streaming)
+ vc4_hdmi_set_audio_infoframe(encoder);
}
static void vc4_hdmi_encoder_disable(struct drm_encoder *encoder)
@@ -694,6 +702,7 @@ static void vc4_hdmi_audio_reset(struct vc4_hdmi *vc4_hdmi)
struct device *dev = &vc4_hdmi->pdev->dev;
int ret;
+ vc4_hdmi->audio.streaming = false;
ret = vc4_hdmi_stop_packet(encoder, HDMI_INFOFRAME_TYPE_AUDIO);
if (ret)
dev_err(dev, "Failed to stop audio infoframe: %d\n", ret);
@@ -797,6 +806,7 @@ static int vc4_hdmi_audio_trigger(struct snd_pcm_substream
*substream, int cmd,
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
vc4_hdmi_set_audio_infoframe(encoder);
+ vc4_hdmi->audio.streaming = true;
if (vc4_hdmi->variant->phy_rng_enable)
vc4_hdmi->variant->phy_rng_enable(vc4_hdmi);
@@ -815,6 +825,8 @@ static int vc4_hdmi_audio_trigger(struct snd_pcm_substream
*substream, int cmd,
if (vc4_hdmi->variant->phy_rng_disable)
vc4_hdmi->variant->phy_rng_disable(vc4_hdmi);
+ vc4_hdmi->audio.streaming = false;
+
break;
default:
break;
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
index 342f6e0227a2..77d47d1707ce 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -85,6 +85,8 @@ struct vc4_hdmi_audio {
int channels;
struct snd_dmaengine_dai_dma_data dma_data;
struct snd_pcm_substream *substream;
+
+ bool streaming;
};
/* General HDMI hardware state. */
--
git-series 0.9.1
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