mirror of
https://github.com/Ysurac/openmptcprouter.git
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126 lines
4 KiB
Diff
126 lines
4 KiB
Diff
From f14a032b5f00ef4bee88500f6b1d7fba7b48d3a8 Mon Sep 17 00:00:00 2001
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From: Matthias Reichl <hias@horus.com>
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Date: Tue, 17 Mar 2020 12:12:22 +0100
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Subject: [PATCH 438/552] drm/vc4: add iec958 controls to vc4_hdmi
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Although vc4 get an IEC958 formatted stream passed in from userspace
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the driver needs the info from the channel status bits to properly
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set up the hardware, eg for HBR passthrough.
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Add iec958 controls so the channel status bits can be passed in
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from userspace.
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Signed-off-by: Matthias Reichl <hias@horus.com>
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---
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drivers/gpu/drm/vc4/vc4_hdmi.c | 60 ++++++++++++++++++++++++++++++++++
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drivers/gpu/drm/vc4/vc4_hdmi.h | 2 ++
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2 files changed, 62 insertions(+)
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diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
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index 31f6ee3e9bd3..605c6e36e534 100644
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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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@@ -45,6 +45,7 @@
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#include <linux/pm_runtime.h>
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#include <linux/rational.h>
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#include <linux/reset.h>
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+#include <sound/asoundef.h>
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#include <sound/dmaengine_pcm.h>
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#include <sound/pcm_drm_eld.h>
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#include <sound/pcm_params.h>
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@@ -1477,6 +1478,47 @@ static int vc4_hdmi_audio_eld_ctl_get(struct snd_kcontrol *kcontrol,
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return 0;
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}
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+static int vc4_spdif_info(struct snd_kcontrol *kcontrol,
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+ struct snd_ctl_elem_info *uinfo)
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+{
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+ uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
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+ uinfo->count = 1;
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+ return 0;
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+}
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+
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+static int vc4_spdif_playback_get(struct snd_kcontrol *kcontrol,
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+ struct snd_ctl_elem_value *ucontrol)
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+{
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+ struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
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+ struct vc4_hdmi *vc4_hdmi = snd_component_to_hdmi(component);
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+
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+ memcpy(ucontrol->value.iec958.status, vc4_hdmi->audio.iec_status,
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+ sizeof(vc4_hdmi->audio.iec_status));
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+
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+ return 0;
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+}
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+
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+static int vc4_spdif_playback_put(struct snd_kcontrol *kcontrol,
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+ struct snd_ctl_elem_value *ucontrol)
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+{
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+ struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
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+ struct vc4_hdmi *vc4_hdmi = snd_component_to_hdmi(component);
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+
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+ memcpy(vc4_hdmi->audio.iec_status, ucontrol->value.iec958.status,
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+ sizeof(vc4_hdmi->audio.iec_status));
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+
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+ return 0;
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+}
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+
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+static int vc4_spdif_mask_get(struct snd_kcontrol *kcontrol,
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+ struct snd_ctl_elem_value *ucontrol)
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+{
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+ memset(ucontrol->value.iec958.status, 0xff,
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+ sizeof_field(struct vc4_hdmi_audio, iec_status));
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+
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+ return 0;
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+}
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+
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static const struct snd_kcontrol_new vc4_hdmi_audio_controls[] = {
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{
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.access = SNDRV_CTL_ELEM_ACCESS_READ |
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@@ -1486,6 +1528,19 @@ static const struct snd_kcontrol_new vc4_hdmi_audio_controls[] = {
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.info = vc4_hdmi_audio_eld_ctl_info,
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.get = vc4_hdmi_audio_eld_ctl_get,
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},
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+ {
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+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
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+ .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
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+ .info = vc4_spdif_info,
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+ .get = vc4_spdif_playback_get,
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+ .put = vc4_spdif_playback_put,
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+ },
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+ {
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+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
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+ .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
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+ .info = vc4_spdif_info,
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+ .get = vc4_spdif_mask_get,
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+ },
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};
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static const struct snd_soc_dapm_widget vc4_hdmi_audio_widgets[] = {
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@@ -1606,6 +1661,11 @@ static int vc4_hdmi_audio_init(struct vc4_hdmi *vc4_hdmi)
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vc4_hdmi->audio.dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
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vc4_hdmi->audio.dma_data.maxburst = 2;
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+ vc4_hdmi->audio.iec_status[0] = IEC958_AES0_CON_NOT_COPYRIGHT;
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+ vc4_hdmi->audio.iec_status[1] =
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+ IEC958_AES1_CON_ORIGINAL | IEC958_AES1_CON_PCM_CODER;
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+ vc4_hdmi->audio.iec_status[3] = IEC958_AES3_CON_FS_48000;
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+
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ret = devm_snd_dmaengine_pcm_register(dev, &pcm_conf, 0);
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if (ret) {
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dev_err(dev, "Could not register PCM component: %d\n", ret);
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diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
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index 884d245507a9..07fa6007a60c 100644
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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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@@ -117,6 +117,8 @@ struct vc4_hdmi_audio {
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struct snd_pcm_substream *substream;
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bool streaming;
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+
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+ unsigned char iec_status[4];
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};
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/* General HDMI hardware state. */
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--
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2.33.0
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