I don't think this patch was updated according to updated "video: rmk's
HDMI notification prototype":
On 03/02/16 16:49, Philipp Zabel wrote:
Use HDMI connection / disconnection notifications to update an ALSA
jack object. Also make a copy of the ELD block after every change.
Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
---
include/sound/hdmi-codec.h | 6 +++
sound/soc/codecs/hdmi-codec.c | 85 +++++++++++++++++++++++++++++++++++++++----
2 files changed, 83 insertions(+), 8 deletions(-)
diff --git a/include/sound/hdmi-codec.h b/include/sound/hdmi-codec.h
index 15fe70f..8b6219d 100644
--- a/include/sound/hdmi-codec.h
+++ b/include/sound/hdmi-codec.h
@@ -99,6 +99,12 @@ struct hdmi_codec_pdata {
int max_i2s_channels;
};
+struct snd_soc_codec;
+struct snd_soc_jack;
+
+int hdmi_codec_set_jack_detect(struct snd_soc_codec *codec,
+ struct snd_soc_jack *jack);
+
#define HDMI_CODEC_DRV_NAME "hdmi-audio-codec"
#endif /* __HDMI_CODEC_H__ */
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index 687332d..7d5db11 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c
@@ -12,9 +12,12 @@
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
+#include <linux/hdmi-not.h>
This should be hdmi-notifier.h. "select HDMI_NOTIFIERS" also needs to be
added to SND_SOC_HDMI_CODEC config option for compilation to succeed.
#include <linux/module.h>
+#include <linux/notifier.h>
#include <linux/string.h>
#include <sound/core.h>
+#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
@@ -27,11 +30,16 @@
struct hdmi_codec_priv {
struct hdmi_codec_pdata hcd;
struct snd_soc_dai_driver *daidrv;
+ struct snd_soc_jack *jack;
struct hdmi_codec_daifmt daifmt[2];
struct mutex current_stream_lock;
struct snd_pcm_substream *current_stream;
struct snd_pcm_hw_constraint_list ratec;
+ struct mutex eld_lock;
uint8_t eld[MAX_ELD_BYTES];
+ struct device *dev;
+ struct notifier_block nb;
+ unsigned int jack_status;
};
static const struct snd_soc_dapm_widget hdmi_widgets[] = {
@@ -86,7 +94,7 @@ static int hdmi_codec_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
- int ret = 0;
+ int ret;
dev_dbg(dai->dev, "%s()\n", __func__);
@@ -106,17 +114,15 @@ static int hdmi_codec_startup(struct snd_pcm_substream *substream,
}
if (hcp->hcd.ops->get_eld) {
+ mutex_lock(&hcp->eld_lock);
ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->eld,
sizeof(hcp->eld));
-
- if (!ret) {
+ if (!ret)
ret = snd_pcm_hw_constraint_eld(substream->runtime,
hcp->eld);
- if (ret)
- return ret;
- }
+ mutex_unlock(&hcp->eld_lock);
}
- return 0;
+ return ret;
}
static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
@@ -326,6 +332,62 @@ static struct snd_soc_codec_driver hdmi_codec = {
.num_dapm_routes = ARRAY_SIZE(hdmi_routes),
};
+static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp,
+ unsigned int jack_status)
+{
+ if (!hcp->jack)
+ return;
+
+ if (jack_status != hcp->jack_status) {
+ snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT);
+ hcp->jack_status = jack_status;
+ }
+}
+
+static int hdmi_codec_notify(struct notifier_block *nb, unsigned long event,
+ void *data)
+{
+ struct hdmi_codec_priv *hcp = container_of(nb, struct hdmi_codec_priv,
+ nb);
+ union hdmi_event *event_block = data;
+
+ if (hcp->dev->parent != event_block->base.source)
+ return NOTIFY_OK;
+
+ if (!hcp->jack)
+ return NOTIFY_OK;
+
+ switch (event) {
+ case HDMI_CONNECTED:
+ hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
+ break;
+ case HDMI_DISCONNECTED:
+ hdmi_codec_jack_report(hcp, 0);
+ break;
+ case HDMI_NEW_ELD:
+ mutex_lock(&hcp->eld_lock);
+ memcpy(hcp->eld, event_block->eld.eld, sizeof(hcp->eld));
+ mutex_unlock(&hcp->eld_lock);
+ break;
+ }
+
+ return NOTIFY_OK;
+}
+
+int hdmi_codec_set_jack_detect(struct snd_soc_codec *codec,
+ struct snd_soc_jack *jack)
+{
+ struct hdmi_codec_priv *hcp = snd_soc_codec_get_drvdata(codec);
+
+ hcp->jack = jack;
+ hcp->nb.notifier_call = hdmi_codec_notify;
+
+ hdmi_register_notifier(&hcp->nb);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(hdmi_codec_set_jack_detect);
+
static int hdmi_codec_probe(struct platform_device *pdev)
{
struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
@@ -354,6 +416,7 @@ static int hdmi_codec_probe(struct platform_device *pdev)
hcp->hcd = *hcd;
mutex_init(&hcp->current_stream_lock);
+ mutex_init(&hcp->eld_lock);
hcp->daidrv = devm_kzalloc(dev, dai_count * sizeof(*hcp->daidrv),
GFP_KERNEL);
@@ -370,6 +433,8 @@ static int hdmi_codec_probe(struct platform_device *pdev)
if (hcd->spdif)
hcp->daidrv[i] = hdmi_spdif_dai;
+ dev_set_drvdata(dev, hcp);
+
ret = snd_soc_register_codec(dev, &hdmi_codec, hcp->daidrv,
dai_count);
if (ret) {
@@ -378,12 +443,16 @@ static int hdmi_codec_probe(struct platform_device *pdev)
return ret;
}
- dev_set_drvdata(dev, hcp);
+ hcp->dev = dev;
+
return 0;
}
static int hdmi_codec_remove(struct platform_device *pdev)
{
+ struct hdmi_codec_priv *hcp = platform_get_drvdata(pdev);
+
+ hdmi_unregister_notifier(&hcp->nb);
snd_soc_unregister_codec(&pdev->dev);
return 0;
}
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