linux-kernel - [PATCH 3.4 04/65] ASoC: wm8737: Fixup setting VMID Impedance control register

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Date:	Tue, 20 Oct 2015 08:47:14 +0800
From:	lizf@...nel.org
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Axel Lin <axel.lin@...ics.com>,
	Mark Brown <broonie@...nel.org>, Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 04/65] ASoC: wm8737: Fixup setting VMID Impedance control register

From: Axel Lin <axel.lin@...ics.com>

3.4.110-rc1 review patch.  If anyone has any objections, please let me know.

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


commit 14ba3ec1de043260cecd9e828ea2e3a0ad302893 upstream.

According to the datasheet:
R10 (0Ah) VMID Impedance Control

BIT 3:2 VMIDSEL DEFAULT 00

DESCRIPTION: VMID impedance selection control
00: 75kΩ output
01: 300kΩ output
10: 2.5kΩ output

WM8737_VMIDSEL_MASK is 0xC (VMIDSEL - [3:2]),
so it needs to left shift WM8737_VMIDSEL_SHIFT bits for setting these bits.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Zefan Li <lizefan@...wei.com>
---
 sound/soc/codecs/wm8737.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wm8737.c b/sound/soc/codecs/wm8737.c
index 4fe9d19..80460d2 100644
--- a/sound/soc/codecs/wm8737.c
+++ b/sound/soc/codecs/wm8737.c
@@ -484,7 +484,8 @@ static int wm8737_set_bias_level(struct snd_soc_codec *codec,
 
 			/* Fast VMID ramp at 2*2.5k */
 			snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL,
-					    WM8737_VMIDSEL_MASK, 0x4);
+					    WM8737_VMIDSEL_MASK,
+					    2 << WM8737_VMIDSEL_SHIFT);
 
 			/* Bring VMID up */
 			snd_soc_update_bits(codec, WM8737_POWER_MANAGEMENT,
@@ -498,7 +499,8 @@ static int wm8737_set_bias_level(struct snd_soc_codec *codec,
 
 		/* VMID at 2*300k */
 		snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL,
-				    WM8737_VMIDSEL_MASK, 2);
+				    WM8737_VMIDSEL_MASK,
+				    1 << WM8737_VMIDSEL_SHIFT);
 
 		break;
 
-- 
1.9.1

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