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76d079204d
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
26 lines
1.1 KiB
Diff
26 lines
1.1 KiB
Diff
From 197803c176d753bc23fdf705306596cbd1e8b658 Mon Sep 17 00:00:00 2001
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From: Howard Mitchell <hm@hmbedded.co.uk>
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Date: Fri, 28 Mar 2014 16:40:31 +0000
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Subject: [PATCH 043/114] pcm512x: Use a range macro for Volume and rename to
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PCM.
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This allows limiting the output gain to avoid clipping in the
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DAC ouput stages.
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---
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sound/soc/codecs/pcm512x.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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--- a/sound/soc/codecs/pcm512x.c
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+++ b/sound/soc/codecs/pcm512x.c
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@@ -259,8 +259,8 @@ static const struct soc_enum pcm512x_ved
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pcm512x_ramp_step_text);
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static const struct snd_kcontrol_new pcm512x_controls[] = {
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-SOC_DOUBLE_R_TLV("Digital Playback Volume", PCM512x_DIGITAL_VOLUME_2,
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- PCM512x_DIGITAL_VOLUME_3, 0, 255, 1, digital_tlv),
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+SOC_DOUBLE_R_RANGE_TLV("PCM", PCM512x_DIGITAL_VOLUME_2,
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+ PCM512x_DIGITAL_VOLUME_3, 0, 40, 255, 1, digital_tlv),
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SOC_DOUBLE_TLV("Analogue Playback Volume", PCM512x_ANALOG_GAIN_CTRL,
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PCM512x_LAGN_SHIFT, PCM512x_RAGN_SHIFT, 1, 1, analog_tlv),
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SOC_DOUBLE_TLV("Analogue Playback Boost Volume", PCM512x_ANALOG_GAIN_BOOST,
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