linux-kernel - [PATCH] ASoC: wm8580: Use snd_soc_update

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>] [day] [month] [year] [list]

Message-ID: <1318821589.5325.1.camel@phoenix>
Date:	Mon, 17 Oct 2011 11:19:49 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>, alsa-devel@...a-project.org
Subject: [PATCH] ASoC: wm8580: Use snd_soc_update_bits for read-modify-write

Use snd_soc_update_bits for read-modify-write register access instead of
open-coding it using snd_soc_read and snd_soc_write

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 sound/soc/codecs/wm8580.c |   21 +++++++++------------
 1 files changed, 9 insertions(+), 12 deletions(-)

diff --git a/sound/soc/codecs/wm8580.c b/sound/soc/codecs/wm8580.c
index b256727..5e348d6 100644
--- a/sound/soc/codecs/wm8580.c
+++ b/sound/soc/codecs/wm8580.c
@@ -430,8 +430,7 @@ static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 	/* Always disable the PLL - it is not safe to leave it running
 	 * while reprogramming it.
 	 */
-	reg = snd_soc_read(codec, WM8580_PWRDN2);
-	snd_soc_write(codec, WM8580_PWRDN2, reg | pwr_mask);
+	snd_soc_update_bits(codec, WM8580_PWRDN2, pwr_mask, pwr_mask);
 
 	if (!freq_in || !freq_out)
 		return 0;
@@ -449,8 +448,7 @@ static int wm8580_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 	snd_soc_write(codec, WM8580_PLLA4 + offset, reg);
 
 	/* All done, turn it on */
-	reg = snd_soc_read(codec, WM8580_PWRDN2);
-	snd_soc_write(codec, WM8580_PWRDN2, reg & ~pwr_mask);
+	snd_soc_update_bits(codec, WM8580_PWRDN2, pwr_mask, 0);
 
 	return 0;
 }
@@ -757,20 +755,19 @@ static int wm8580_set_bias_level(struct snd_soc_codec *codec,
 	case SND_SOC_BIAS_STANDBY:
 		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 			/* Power up and get individual control of the DACs */
-			reg = snd_soc_read(codec, WM8580_PWRDN1);
-			reg &= ~(WM8580_PWRDN1_PWDN | WM8580_PWRDN1_ALLDACPD);
-			snd_soc_write(codec, WM8580_PWRDN1, reg);
+			snd_soc_update_bits(codec, WM8580_PWRDN1,
+					    WM8580_PWRDN1_PWDN |
+					    WM8580_PWRDN1_ALLDACPD, 0);
 
 			/* Make VMID high impedance */
-			reg = snd_soc_read(codec,  WM8580_ADC_CONTROL1);
-			reg &= ~0x100;
-			snd_soc_write(codec, WM8580_ADC_CONTROL1, reg);
+			snd_soc_update_bits(codec, WM8580_ADC_CONTROL1,
+					    0x100, 0);
 		}
 		break;
 
 	case SND_SOC_BIAS_OFF:
-		reg = snd_soc_read(codec, WM8580_PWRDN1);
-		snd_soc_write(codec, WM8580_PWRDN1, reg | WM8580_PWRDN1_PWDN);
+		snd_soc_update_bits(codec, WM8580_PWRDN1,
+				    WM8580_PWRDN1_PWDN, WM8580_PWRDN1_PWDN);
 		break;
 	}
 	codec->dapm.bias_level = level;
-- 
1.7.4.1



--
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/