linux-kernel - [RFC][PATCH 4/4] drm/bridge: adv7511: Initialize audio packet on adv7533

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Date:   Mon, 22 Aug 2016 22:50:47 -0700
From:   John Stultz <john.stultz@...aro.org>
To:     lkml <linux-kernel@...r.kernel.org>
Cc:     Andy Green <andy.green@...aro.org>,
        David Airlie <airlied@...ux.ie>,
        Archit Taneja <architt@...eaurora.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Ville Syrjälä 
        <ville.syrjala@...ux.intel.com>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Andy Green <andy@...mcat.com>,
        Dave Long <dave.long@...aro.org>,
        Guodong Xu <guodong.xu@...aro.org>,
        Zhangfei Gao <zhangfei.gao@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Jose Abreu <joabreu@...opsys.com>,
        dri-devel@...ts.freedesktop.org,
        John Stultz <john.stultz@...aro.org>
Subject: [RFC][PATCH 4/4] drm/bridge: adv7511: Initialize audio packet on adv7533

From: Andy Green <andy.green@...aro.org>

Set the initial audio packet settings to allow the audio
driver to work.

Cc: David Airlie <airlied@...ux.ie>
Cc: Archit Taneja <architt@...eaurora.org>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc: "Ville Syrjälä" <ville.syrjala@...ux.intel.com>
Cc: Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc: Andy Green <andy@...mcat.com>
Cc: Dave Long <dave.long@...aro.org>
Cc: Guodong Xu <guodong.xu@...aro.org>
Cc: Zhangfei Gao <zhangfei.gao@...aro.org>
Cc: Mark Brown <broonie@...nel.org>
Cc: Lars-Peter Clausen <lars@...afoo.de>
Cc: Jose Abreu <joabreu@...opsys.com>
Cc: dri-devel@...ts.freedesktop.org
Signed-off-by: Andy Green <andy.green@...aro.org>
[jstultz: Forward ported to mainline, changed to use register
 names rather then hex values, and removed config values set by
 audio driver.]
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
 drivers/gpu/drm/bridge/adv7511/adv7533.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7533.c b/drivers/gpu/drm/bridge/adv7511/adv7533.c
index 6798ecf..cced7c9 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7533.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7533.c
@@ -104,6 +104,28 @@ void adv7533_dsi_power_on(struct adv7511 *adv)
 	/* disable test mode */
 	regmap_write(adv->regmap_cec, 0x55, 0x00);
 
+	/* hide Audio infoframe updates */
+	regmap_update_bits(adv->regmap, ADV7511_REG_INFOFRAME_UPDATE,
+				BIT(5), BIT(5));
+	/* enable N/CTS, enable Audio sample packets */
+	regmap_update_bits(adv->regmap, ADV7511_REG_PACKET_ENABLE1,
+				BIT(5), BIT(5));
+	/* enable N/CTS */
+	regmap_update_bits(adv->regmap, ADV7511_REG_PACKET_ENABLE1,
+				BIT(6), BIT(6));
+	/* not copyrighted */
+	regmap_update_bits(adv->regmap, ADV7511_REG_AUDIO_CFG1,
+				BIT(5), BIT(5));
+	/* enable audio infoframes */
+	regmap_update_bits(adv->regmap, ADV7511_REG_PACKET_ENABLE1,
+				BIT(3), BIT(3));
+	/* AV mute disable */
+	regmap_update_bits(adv->regmap, ADV7511_REG_GC(0),
+				BIT(7) | BIT(6), BIT(7));
+	/* use Audio infoframe updated info */
+	regmap_update_bits(adv->regmap, ADV7511_REG_GC(1),
+				BIT(5), 0);
+
 	regmap_register_patch(adv->regmap_cec, adv7533_cec_fixed_registers,
 			      ARRAY_SIZE(adv7533_cec_fixed_registers));
 }
-- 
1.9.1