linux-kernel - [PATCH 3.11 030/272] ASoC: arizona: Set FLL to free-run before disabling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1386334761-25517-31-git-send-email-luis.henriques@canonical.com>
Date:	Fri,  6 Dec 2013 12:55:19 +0000
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>,
	Mark Brown <broonie@...aro.org>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.11 030/272] ASoC: arizona: Set FLL to free-run before disabling

3.11.10.1 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>

commit 3e68ce1bc72e5d6615677ec5a8b0a9bcb6c7a490 upstream.

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>
Signed-off-by: Mark Brown <broonie@...aro.org>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 sound/soc/codecs/arizona.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index de62581..89eff11 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -1462,6 +1462,8 @@ 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 (fll->ref_src >= 0 && fll->sync_src >= 0 &&
 	    fll->ref_src != fll->sync_src)
@@ -1480,6 +1482,8 @@ 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,
-- 
1.8.3.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/