[3.16.y-ckt stable] Patch "ASoC: wm8737: Fixup setting VMID Impedance control register" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    ASoC: wm8737: Fixup setting VMID Impedance control register

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt15.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From f1e1682574190f4c321e20b0760aeb7dfb32ded2 Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin at ingics.com>
Date: Sun, 10 May 2015 11:35:06 +0800
Subject: ASoC: wm8737: Fixup setting VMID Impedance control register
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

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 at ingics.com>
Signed-off-by: Mark Brown <broonie at kernel.org>
Signed-off-by: Luis Henriques <luis.henriques at canonical.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 b27f26cdc049..daa8e70c41d8 100644
--- a/sound/soc/codecs/wm8737.c
+++ b/sound/soc/codecs/wm8737.c
@@ -494,7 +494,8 @@ 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,
@@ -508,7 +509,8 @@ 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;