Find the HDMI state notifier device (CEC) in the device tree and pass it to hdmi-codec.
Signed-off-by: Philipp Zabel p.zabel@pengutronix.de --- Changes since v8: - Rebased onto the "video: add HDMI state notifier support" patch. Now we look for the CEC device in the device tree to pass it to hdmi_codec_set_jack_detect. --- sound/soc/mediatek/mt8173/mt8173-rt5650.c | 42 +++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+)
diff --git a/sound/soc/mediatek/mt8173/mt8173-rt5650.c b/sound/soc/mediatek/mt8173/mt8173-rt5650.c index ba65f41..daf00cf 100644 --- a/sound/soc/mediatek/mt8173/mt8173-rt5650.c +++ b/sound/soc/mediatek/mt8173/mt8173-rt5650.c @@ -17,7 +17,9 @@ #include <linux/module.h> #include <linux/gpio.h> #include <linux/of_gpio.h> +#include <linux/of_platform.h> #include <sound/soc.h> +#include <sound/hdmi-codec.h> #include <sound/jack.h> #include "../../codecs/rt5645.h"
@@ -166,6 +168,27 @@ static struct snd_soc_dai_link_component mt8173_rt5650_codecs[] = { }, };
+static struct snd_soc_jack mt8173_hdmi_card_jack; + +static int mt8173_hdmi_init(struct snd_soc_pcm_runtime *runtime) +{ + struct snd_soc_card *card = runtime->card; + struct snd_soc_codec *codec = runtime->codec; + struct device *cec_dev = snd_soc_card_get_drvdata(card); + int ret; + + /* Enable jack detection */ + ret = snd_soc_card_jack_new(card, "HDMI Jack", SND_JACK_LINEOUT, + &mt8173_hdmi_card_jack, NULL, 0); + if (ret) { + dev_err(card->dev, "HDMI Jack creation failed: %d\n", ret); + return ret; + } + + return hdmi_codec_set_jack_detect(codec, &mt8173_hdmi_card_jack, + cec_dev); +} + enum { DAI_LINK_PLAYBACK, DAI_LINK_CAPTURE, @@ -228,6 +251,7 @@ static struct snd_soc_dai_link mt8173_rt5650_dais[] = { .no_pcm = 1, .codec_dai_name = "i2s-hifi", .dpcm_playback = 1, + .init = mt8173_hdmi_init, }, };
@@ -249,6 +273,8 @@ static int mt8173_rt5650_dev_probe(struct platform_device *pdev) struct snd_soc_card *card = &mt8173_rt5650_card; struct device_node *platform_node; struct device_node *np; + struct device_node *cec_np; + struct platform_device *cec_pdev; const char *codec_capture_dai; int i, ret;
@@ -313,6 +339,22 @@ static int mt8173_rt5650_dev_probe(struct platform_device *pdev) card->dev = &pdev->dev; platform_set_drvdata(pdev, card);
+ /* The CEC module handles HDMI hotplug detection */ + cec_np = of_find_compatible_node(pdev->dev.of_node->parent, NULL, + "mediatek,mt8173-cec"); + if (!cec_np) { + dev_err(&pdev->dev, "Failed to find CEC node\n"); + return -EINVAL; + } + + cec_pdev = of_find_device_by_node(cec_np); + if (!cec_pdev) { + dev_err(&pdev->dev, "Waiting for CEC device %s\n", + cec_np->full_name); + return -EPROBE_DEFER; + } + + snd_soc_card_set_drvdata(card, &cec_pdev->dev); ret = devm_snd_soc_register_card(&pdev->dev, card); if (ret) dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",