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Diffstat (limited to 'target/linux/bcm27xx/patches-5.10/950-0315-drm-vc4-move-setup-from-hw_params-to-prepare.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.10/950-0315-drm-vc4-move-setup-from-hw_params-to-prepare.patch58
1 files changed, 58 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.10/950-0315-drm-vc4-move-setup-from-hw_params-to-prepare.patch b/target/linux/bcm27xx/patches-5.10/950-0315-drm-vc4-move-setup-from-hw_params-to-prepare.patch
new file mode 100644
index 0000000000..cfe27b866a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0315-drm-vc4-move-setup-from-hw_params-to-prepare.patch
@@ -0,0 +1,58 @@
+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
+@@ -1028,9 +1028,8 @@ 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;
+@@ -1043,12 +1042,15 @@ 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 |
+@@ -1270,7 +1272,7 @@ 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,
+ };