openwrt/target/linux/brcm2708/patches-3.18/0043-pcm512x-Use-a-range-macro-for-Volume-and-rename-to-P.patch
Jonas Gorski 76d079204d kernel: update 3.18 to 3.18.14
Changelogs:

* https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.12
* https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.13
* https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.14

Build tested on brcm63xx and ipq806x, runtested on brcm63xx.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 45711
2015-05-21 19:32:46 +00:00

26 lines
1.1 KiB
Diff

From 197803c176d753bc23fdf705306596cbd1e8b658 Mon Sep 17 00:00:00 2001
From: Howard Mitchell <hm@hmbedded.co.uk>
Date: Fri, 28 Mar 2014 16:40:31 +0000
Subject: [PATCH 043/114] pcm512x: Use a range macro for Volume and rename to
PCM.
This allows limiting the output gain to avoid clipping in the
DAC ouput stages.
---
sound/soc/codecs/pcm512x.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/sound/soc/codecs/pcm512x.c
+++ b/sound/soc/codecs/pcm512x.c
@@ -259,8 +259,8 @@ static const struct soc_enum pcm512x_ved
pcm512x_ramp_step_text);
static const struct snd_kcontrol_new pcm512x_controls[] = {
-SOC_DOUBLE_R_TLV("Digital Playback Volume", PCM512x_DIGITAL_VOLUME_2,
- PCM512x_DIGITAL_VOLUME_3, 0, 255, 1, digital_tlv),
+SOC_DOUBLE_R_RANGE_TLV("PCM", PCM512x_DIGITAL_VOLUME_2,
+ PCM512x_DIGITAL_VOLUME_3, 0, 40, 255, 1, digital_tlv),
SOC_DOUBLE_TLV("Analogue Playback Volume", PCM512x_ANALOG_GAIN_CTRL,
PCM512x_LAGN_SHIFT, PCM512x_RAGN_SHIFT, 1, 1, analog_tlv),
SOC_DOUBLE_TLV("Analogue Playback Boost Volume", PCM512x_ANALOG_GAIN_BOOST,