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From 7b6cfdfc74c7e9c00060a0c4146a6358b261f7db Mon Sep 17 00:00:00 2001
From: Matthias Reichl <hias@horus.com>
Date: Thu, 19 Mar 2020 20:00:35 +0100
Subject: [PATCH] drm/vc4: move setup from hw_params to prepare
Configuring HDMI audio registers in prepare allows us to take
IEC958 bits into account which are set by the alsa hook after
the hw_params call.
Signed-off-by: Matthias Reichl <hias@horus.com>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1029,9 +1029,8 @@ static int sample_rate_to_mai_fmt(int sa
}
/* HDMI audio codec callbacks */
-static int vc4_hdmi_audio_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct snd_soc_dai *dai)
+static int vc4_hdmi_audio_prepare(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
{
struct vc4_hdmi *vc4_hdmi = dai_to_hdmi(dai);
struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base;
@@ -1044,12 +1043,15 @@ static int vc4_hdmi_audio_hw_params(stru
if (substream != vc4_hdmi->audio.substream)
return -EINVAL;
- dev_dbg(dev, "%s: %u Hz, %d bit, %d channels\n", __func__,
- params_rate(params), params_width(params),
- params_channels(params));
+ dev_dbg(dev, "%s: %u Hz, %d bit, %d channels AES0=%02x\n",
+ __func__,
+ substream->runtime->rate,
+ snd_pcm_format_width(substream->runtime->format),
+ substream->runtime->channels,
+ vc4_hdmi->audio.iec_status[0]);
- vc4_hdmi->audio.channels = params_channels(params);
- vc4_hdmi->audio.samplerate = params_rate(params);
+ vc4_hdmi->audio.channels = substream->runtime->channels;
+ vc4_hdmi->audio.samplerate = substream->runtime->rate;
HDMI_WRITE(HDMI_MAI_CTL,
VC4_HD_MAI_CTL_RESET |
@@ -1271,7 +1273,7 @@ static const struct snd_soc_component_dr
static const struct snd_soc_dai_ops vc4_hdmi_audio_dai_ops = {
.startup = vc4_hdmi_audio_startup,
.shutdown = vc4_hdmi_audio_shutdown,
- .hw_params = vc4_hdmi_audio_hw_params,
+ .prepare = vc4_hdmi_audio_prepare,
.set_fmt = vc4_hdmi_audio_set_fmt,
.trigger = vc4_hdmi_audio_trigger,
};
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