[PATCH 6/7] ASoC: rockchip_max98090: Add HDMI jack support

[Cheng-Yi Chiang]

In machine driver, create a jack and let hdmi-codec report jack status.

Signed-off-by: Cheng-Yi Chiang <cychi...@chromium.org>
---
 sound/soc/rockchip/rockchip_max98090.c | 41 ++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/sound/soc/rockchip/rockchip_max98090.c 
b/sound/soc/rockchip/rockchip_max98090.c
index 2dd247670c7a..17c50d9fbac1 100644
--- a/sound/soc/rockchip/rockchip_max98090.c
+++ b/sound/soc/rockchip/rockchip_max98090.c
@@ -18,6 +18,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/of_platform.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/gpio.h>
@@ -27,6 +28,7 @@
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
+#include <sound/hdmi-codec.h>
 
 #include "rockchip_i2s.h"
 #include "../codecs/ts3a227e.h"
@@ -131,6 +133,26 @@ enum {
        DAILINK_HDMI,
 };
 
+static struct snd_soc_jack rk_hdmi_jack;
+
+static int rk_hdmi_init(struct snd_soc_pcm_runtime *runtime)
+{
+       struct snd_soc_card *card = runtime->card;
+       struct snd_soc_component *component = runtime->codec_dai->component;
+       struct device *hdmi_dev = snd_soc_card_get_drvdata(card);
+       int ret;
+
+       /* enable jack detection */
+       ret = snd_soc_card_jack_new(card, "HDMI Jack", SND_JACK_LINEOUT,
+                                   &rk_hdmi_jack, NULL, 0);
+       if (ret) {
+               dev_err(card->dev, "Can't new HDMI Jack %d\n", ret);
+               return ret;
+       }
+
+       return hdmi_codec_set_jack_detect(component, &rk_hdmi_jack, hdmi_dev);
+}
+
 /* max98090 and HDMI codec dai_link */
 static struct snd_soc_dai_link rk_dailinks[] = {
        [DAILINK_MAX98090] = {
@@ -148,6 +170,7 @@ static struct snd_soc_dai_link rk_dailinks[] = {
                .ops = &rk_aif1_ops,
                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
                        SND_SOC_DAIFMT_CBS_CFS,
+               .init = rk_hdmi_init,
        }
 };
 
@@ -200,6 +223,8 @@ static int snd_rk_mc_probe(struct platform_device *pdev)
        struct device_node *np = pdev->dev.of_node;
        struct device_node *np_cpu;
        struct of_phandle_args args;
+       struct device_node *np_hdmi;
+       struct platform_device *hdmi_pdev;
 
        /* register the soc card */
        card->dev = &pdev->dev;
@@ -248,6 +273,22 @@ static int snd_rk_mc_probe(struct platform_device *pdev)
                return -EINVAL;
        }
 
+       /* The hdmi device handles HDMI hotplug detection */
+       np_hdmi = of_parse_phandle(np, "rockchip,hdmi", 0);
+       if (!np_hdmi) {
+               dev_err(&pdev->dev, "Failed to find HDMI node\n");
+               return -EINVAL;
+       }
+
+       hdmi_pdev = of_find_device_by_node(np_hdmi);
+       if (!hdmi_pdev) {
+               dev_err(&pdev->dev, "Waiting for HDMI device %s\n",
+                       np_hdmi->full_name);
+               return -EPROBE_DEFER;
+       }
+
+       snd_soc_card_set_drvdata(card, &hdmi_pdev->dev);
+
        ret = snd_soc_of_parse_card_name(card, "rockchip,model");
        if (ret) {
                dev_err(&pdev->dev,
-- 
2.22.0.rc1.257.g3120a18244-goog