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authorJohn Stultz <john.stultz@linaro.org>2017-06-13 14:59:49 -0700
committerMark Brown <broonie@kernel.org>2017-06-28 21:00:08 +0100
commit7204e97685634813d8456f1900b7f38fa7701e60 (patch)
treef442222210631b50bec4b4c47a117319dbaf9878 /drivers/gpu/drm/bridge
parente3839bd6f56a291f00a4c3737eb15ca0344a82a9 (diff)
drm: adv7511_audio: Add .get_dai_id callback to map port number to dai id
ALSA SoC needs to know connected DAI ID for probing. Using the new audio-card-graph approach, ports/endpoints are used to describe how the links are connected. Unfortunately, since ports/endpoints are used as well for video linkages, there are some issues mixing the port ids to the two (video and audio) namespaces. To solve this issue, this patch adds new .get_dai_id callback on hdmi_codec_ops. The will assume that HDMI audio out will be connected to reg = <2>. This will then be remapped to the ALSA SoC side will as DAI 0. Allowing the adv7511's hdmi audio support to be used with the audio-card-graph. Credit to Kuninori Morimoto who's patch to dw-hdmi-i2s-audio.c was what this was mostly copy-pasted from. Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Cc: Archit Taneja <architt@codeaurora.org> Cc: Mark Brown <broonie@kernel.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: David Airlie <airlied@linux.ie> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Linux-ALSA <alsa-devel@alsa-project.org> Cc: dri-devel@lists.freedesktop.org Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/bridge')
-rw-r--r--drivers/gpu/drm/bridge/adv7511/adv7511_audio.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
index cf92ebfe6ab7..67469c26bae8 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
@@ -11,6 +11,7 @@
#include <sound/hdmi-codec.h>
#include <sound/pcm.h>
#include <sound/soc.h>
+#include <linux/of_graph.h>
#include "adv7511.h"
@@ -182,10 +183,31 @@ static void audio_shutdown(struct device *dev, void *data)
{
}
+static int adv7511_hdmi_i2s_get_dai_id(struct snd_soc_component *component,
+ struct device_node *endpoint)
+{
+ struct of_endpoint of_ep;
+ int ret;
+
+ ret = of_graph_parse_endpoint(endpoint, &of_ep);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * HDMI sound should be located as reg = <2>
+ * Then, it is sound port 0
+ */
+ if (of_ep.port == 2)
+ return 0;
+
+ return -EINVAL;
+}
+
static const struct hdmi_codec_ops adv7511_codec_ops = {
.hw_params = adv7511_hdmi_hw_params,
.audio_shutdown = audio_shutdown,
.audio_startup = audio_startup,
+ .get_dai_id = adv7511_hdmi_i2s_get_dai_id,
};
static struct hdmi_codec_pdata codec_data = {