linux-kernel - [PATCH v2 1/1] ASoC: arizona: Set FLL to free-run before disabling

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Message-ID: <20131120143709.GA12897@opensource.wolfsonmicro.com>
Date:	Wed, 20 Nov 2013 14:37:09 +0000
From:	Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
To:	broonie@...nel.org
Cc:	alsa-devel@...a-project.org, tiwai@...e.de,
	linux-kernel@...r.kernel.org, patches@...nsource.wolfsonmicro.com,
	lgirdwood@...il.com, perex@...ex.cz
Subject: [PATCH v2 1/1] ASoC: arizona: Set FLL to free-run before disabling

The FLL must be placed into free-run mode before disabling
to allow it to entirely shut down.

Signed-off-by: Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
---
 sound/soc/codecs/arizona.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index 6f05b17..fea9910 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -1529,6 +1529,8 @@ static void arizona_enable_fll(struct arizona_fll *fll,
 	try_wait_for_completion(&fll->ok);
 
 	regmap_update_bits(arizona->regmap, fll->base + 1,
+			   ARIZONA_FLL1_FREERUN, 0);
+	regmap_update_bits(arizona->regmap, fll->base + 1,
 			   ARIZONA_FLL1_ENA, ARIZONA_FLL1_ENA);
 	if (use_sync)
 		regmap_update_bits(arizona->regmap, fll->base + 0x11,
@@ -1546,6 +1548,8 @@ static void arizona_disable_fll(struct arizona_fll *fll)
 	struct arizona *arizona = fll->arizona;
 	bool change;
 
+	regmap_update_bits(arizona->regmap, fll->base + 1,
+			   ARIZONA_FLL1_FREERUN, ARIZONA_FLL1_FREERUN);
 	regmap_update_bits_check(arizona->regmap, fll->base + 1,
 				 ARIZONA_FLL1_ENA, 0, &change);
 	regmap_update_bits(arizona->regmap, fll->base + 0x11,
-- 
1.7.2.5


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