[alsa-devel] [RFC PATCH v2 3/6] ASoC: hdac_hda: add support for HDMI/DP as a HDA codec
Kai Vehmanen
kai.vehmanen at linux.intel.com
Fri Sep 6 16:29:06 CEST 2019
Handle all HDA codecs using same logic, including HDMI/DP.
Call to snd_hda_codec_build_controls() is delayed for HDMI/DP HDA
devices. This is needed to discover the PCM device numbers as
defined in topology.
Signed-off-by: Kai Vehmanen <kai.vehmanen at linux.intel.com>
---
sound/soc/codecs/hdac_hda.c | 95 ++++++++++++++++++++++++++++++++-----
sound/soc/codecs/hdac_hda.h | 12 ++++-
2 files changed, 94 insertions(+), 13 deletions(-)
diff --git a/sound/soc/codecs/hdac_hda.c b/sound/soc/codecs/hdac_hda.c
index 7d4940256914..1c950e089e39 100644
--- a/sound/soc/codecs/hdac_hda.c
+++ b/sound/soc/codecs/hdac_hda.c
@@ -16,11 +16,8 @@
#include <sound/hdaudio_ext.h>
#include <sound/hda_codec.h>
#include <sound/hda_register.h>
-#include "hdac_hda.h"
-#define HDAC_ANALOG_DAI_ID 0
-#define HDAC_DIGITAL_DAI_ID 1
-#define HDAC_ALT_ANALOG_DAI_ID 2
+#include "hdac_hda.h"
#define STUB_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
SNDRV_PCM_FMTBIT_U8 | \
@@ -121,7 +118,46 @@ static struct snd_soc_dai_driver hdac_hda_dais[] = {
.formats = STUB_FORMATS,
.sig_bits = 24,
},
-}
+},
+{
+ .id = HDAC_HDMI_0_DAI_ID,
+ .name = "intel-hdmi-hifi1",
+ .ops = &hdac_hda_dai_ops,
+ .playback = {
+ .stream_name = "HDMI 1 Playback",
+ .channels_min = 1,
+ .channels_max = 16,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = STUB_FORMATS,
+ .sig_bits = 24,
+ },
+},
+{
+ .id = HDAC_HDMI_1_DAI_ID,
+ .name = "intel-hdmi-hifi2",
+ .ops = &hdac_hda_dai_ops,
+ .playback = {
+ .stream_name = "HDMI 2 Playback",
+ .channels_min = 1,
+ .channels_max = 16,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = STUB_FORMATS,
+ .sig_bits = 24,
+ },
+},
+{
+ .id = HDAC_HDMI_2_DAI_ID,
+ .name = "intel-hdmi-hifi3",
+ .ops = &hdac_hda_dai_ops,
+ .playback = {
+ .stream_name = "HDMI 3 Playback",
+ .channels_min = 1,
+ .channels_max = 16,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = STUB_FORMATS,
+ .sig_bits = 24,
+ },
+},
};
@@ -135,10 +171,11 @@ static int hdac_hda_dai_set_tdm_slot(struct snd_soc_dai *dai,
hda_pvt = snd_soc_component_get_drvdata(component);
pcm = &hda_pvt->pcm[dai->id];
+
if (tx_mask)
- pcm[dai->id].stream_tag[SNDRV_PCM_STREAM_PLAYBACK] = tx_mask;
+ pcm->stream_tag[SNDRV_PCM_STREAM_PLAYBACK] = tx_mask;
else
- pcm[dai->id].stream_tag[SNDRV_PCM_STREAM_CAPTURE] = rx_mask;
+ pcm->stream_tag[SNDRV_PCM_STREAM_CAPTURE] = rx_mask;
return 0;
}
@@ -278,6 +315,12 @@ static struct hda_pcm *snd_soc_find_pcm_from_dai(struct hdac_hda_priv *hda_pvt,
struct hda_pcm *cpcm;
const char *pcm_name;
+ /*
+ * map DAI ID to the closest matching PCM name, using the naming
+ * scheme used by hda-codec snd_hda_gen_build_pcms() and for
+ * HDMI in hda_codec patch_hdmi.c)
+ */
+
switch (dai->id) {
case HDAC_ANALOG_DAI_ID:
pcm_name = "Analog";
@@ -288,13 +331,22 @@ static struct hda_pcm *snd_soc_find_pcm_from_dai(struct hdac_hda_priv *hda_pvt,
case HDAC_ALT_ANALOG_DAI_ID:
pcm_name = "Alt Analog";
break;
+ case HDAC_HDMI_0_DAI_ID:
+ pcm_name = "HDMI 0";
+ break;
+ case HDAC_HDMI_1_DAI_ID:
+ pcm_name = "HDMI 1";
+ break;
+ case HDAC_HDMI_2_DAI_ID:
+ pcm_name = "HDMI 2";
+ break;
default:
dev_err(&hcodec->core.dev, "invalid dai id %d\n", dai->id);
return NULL;
}
list_for_each_entry(cpcm, &hcodec->pcm_list_head, list) {
- if (strpbrk(cpcm->name, pcm_name))
+ if (strstr(cpcm->name, pcm_name))
return cpcm;
}
@@ -302,6 +354,18 @@ static struct hda_pcm *snd_soc_find_pcm_from_dai(struct hdac_hda_priv *hda_pvt,
return NULL;
}
+static bool is_hdmi_codec(struct hda_codec *hcodec)
+{
+ struct hda_pcm *cpcm;
+
+ list_for_each_entry(cpcm, &hcodec->pcm_list_head, list) {
+ if (cpcm->pcm_type == HDA_PCM_TYPE_HDMI)
+ return true;
+ }
+
+ return false;
+}
+
static int hdac_hda_codec_probe(struct snd_soc_component *component)
{
struct hdac_hda_priv *hda_pvt =
@@ -366,16 +430,23 @@ static int hdac_hda_codec_probe(struct snd_soc_component *component)
dev_dbg(&hdev->dev, "no patch file found\n");
}
+ /* configure codec for 1:1 PCM:DAI mapping */
+ hcodec->mst_no_extra_pcms = 1;
+
ret = snd_hda_codec_parse_pcms(hcodec);
if (ret < 0) {
dev_err(&hdev->dev, "unable to map pcms to dai %d\n", ret);
goto error;
}
- ret = snd_hda_codec_build_controls(hcodec);
- if (ret < 0) {
- dev_err(&hdev->dev, "unable to create controls %d\n", ret);
- goto error;
+ /* HDMI controls need to be created in machine drivers */
+ if (!is_hdmi_codec(hcodec)) {
+ ret = snd_hda_codec_build_controls(hcodec);
+ if (ret < 0) {
+ dev_err(&hdev->dev, "unable to create controls %d\n",
+ ret);
+ goto error;
+ }
}
hcodec->core.lazy_cache = true;
diff --git a/sound/soc/codecs/hdac_hda.h b/sound/soc/codecs/hdac_hda.h
index 6b1bd4f428e7..5d0979f6f215 100644
--- a/sound/soc/codecs/hdac_hda.h
+++ b/sound/soc/codecs/hdac_hda.h
@@ -6,6 +6,16 @@
#ifndef __HDAC_HDA_H__
#define __HDAC_HDA_H__
+enum {
+ HDAC_ANALOG_DAI_ID = 0,
+ HDAC_DIGITAL_DAI_ID,
+ HDAC_ALT_ANALOG_DAI_ID,
+ HDAC_HDMI_0_DAI_ID,
+ HDAC_HDMI_1_DAI_ID,
+ HDAC_HDMI_2_DAI_ID,
+ HDAC_LAST_DAI_ID = HDAC_HDMI_2_DAI_ID,
+};
+
struct hdac_hda_pcm {
int stream_tag[2];
unsigned int format_val[2];
@@ -13,7 +23,7 @@ struct hdac_hda_pcm {
struct hdac_hda_priv {
struct hda_codec codec;
- struct hdac_hda_pcm pcm[2];
+ struct hdac_hda_pcm pcm[HDAC_LAST_DAI_ID];
};
#define hdac_to_hda_priv(_hdac) \
--
2.17.1
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