linux-kernel - [PATCH 1/2] drm: bridge: adv7511: Enable SPDIF DAI

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Date:   Fri, 4 Oct 2019 14:16:15 +0300
From:   Bogdan Togorean <bogdan.togorean@...log.com>
To:     <dri-devel@...ts.freedesktop.org>
CC:     <airlied@...ux.ie>, <daniel@...ll.ch>, <narmstrong@...libre.com>,
        <a.hajda@...sung.com>, <Laurent.pinchart@...asonboard.com>,
        <jonas@...boo.se>, <jernej.skrabec@...l.net>,
        <allison@...utok.net>, <tglx@...utronix.de>, <rfontana@...hat.com>,
        <linux-kernel@...r.kernel.org>,
        Bogdan Togorean <bogdan.togorean@...log.com>
Subject: [PATCH 1/2] drm: bridge: adv7511: Enable SPDIF DAI

ADV7511 support I2S or SPDIF as audio input interfaces. This commit
enable support for SPDIF.

Signed-off-by: Bogdan Togorean <bogdan.togorean@...log.com>
---
 drivers/gpu/drm/bridge/adv7511/adv7511_audio.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
index a428185be2c1..96be7b005c50 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
@@ -119,6 +119,8 @@ int adv7511_hdmi_hw_params(struct device *dev, void *data,
 		audio_source = ADV7511_AUDIO_SOURCE_I2S;
 		i2s_format = ADV7511_I2S_FORMAT_LEFT_J;
 		break;
+	case HDMI_SPDIF:
+		audio_source = ADV7511_AUDIO_SOURCE_SPDIF;
 	default:
 		return -EINVAL;
 	}
@@ -175,11 +177,21 @@ static int audio_startup(struct device *dev, void *data)
 	/* use Audio infoframe updated info */
 	regmap_update_bits(adv7511->regmap, ADV7511_REG_GC(1),
 				BIT(5), 0);
+	/* enable SPDIF receiver */
+	if (adv7511->audio_source == ADV7511_AUDIO_SOURCE_SPDIF)
+		regmap_update_bits(adv7511->regmap, ADV7511_REG_AUDIO_CONFIG,
+				   BIT(7), BIT(7));
+
 	return 0;
 }
 
 static void audio_shutdown(struct device *dev, void *data)
 {
+	struct adv7511 *adv7511 = dev_get_drvdata(dev);
+
+	if (adv7511->audio_source == ADV7511_AUDIO_SOURCE_SPDIF)
+		regmap_update_bits(adv7511->regmap, ADV7511_REG_AUDIO_CONFIG,
+				   BIT(7), 0);
 }
 
 static int adv7511_hdmi_i2s_get_dai_id(struct snd_soc_component *component,
@@ -213,6 +225,7 @@ static const struct hdmi_codec_pdata codec_data = {
 	.ops = &adv7511_codec_ops,
 	.max_i2s_channels = 2,
 	.i2s = 1,
+	.spdif = 1,
 };
 
 int adv7511_audio_init(struct device *dev, struct adv7511 *adv7511)
-- 
2.23.0