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path: root/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
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Diffstat (limited to 'drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c')
-rw-r--r--drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
index aaf287d2e91d..b2cf59f54c88 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
@@ -82,9 +82,30 @@ static void dw_hdmi_i2s_audio_shutdown(struct device *dev, void *data)
hdmi_write(audio, HDMI_AUD_CONF0_SW_RESET, HDMI_AUD_CONF0);
}
+static int dw_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 struct hdmi_codec_ops dw_hdmi_i2s_ops = {
.hw_params = dw_hdmi_i2s_hw_params,
.audio_shutdown = dw_hdmi_i2s_audio_shutdown,
+ .get_dai_id = dw_hdmi_i2s_get_dai_id,
};
static int snd_dw_hdmi_probe(struct platform_device *pdev)