diff options
Diffstat (limited to 'target/linux/brcm2708/patches-3.18/0043-pcm512x-Use-a-range-macro-for-Volume-and-rename-to-P.patch')
| -rwxr-xr-x | target/linux/brcm2708/patches-3.18/0043-pcm512x-Use-a-range-macro-for-Volume-and-rename-to-P.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-3.18/0043-pcm512x-Use-a-range-macro-for-Volume-and-rename-to-P.patch b/target/linux/brcm2708/patches-3.18/0043-pcm512x-Use-a-range-macro-for-Volume-and-rename-to-P.patch new file mode 100755 index 0000000000..ab5e3632b3 --- /dev/null +++ b/target/linux/brcm2708/patches-3.18/0043-pcm512x-Use-a-range-macro-for-Volume-and-rename-to-P.patch @@ -0,0 +1,30 @@ +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(-) + +diff --git a/sound/soc/codecs/pcm512x.c b/sound/soc/codecs/pcm512x.c +index 640c991..b405719 100644 +--- a/sound/soc/codecs/pcm512x.c ++++ b/sound/soc/codecs/pcm512x.c +@@ -259,8 +259,8 @@ static const struct soc_enum pcm512x_veds = + 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("Playback Volume", PCM512x_ANALOG_GAIN_CTRL, + PCM512x_LAGN_SHIFT, PCM512x_RAGN_SHIFT, 1, 1, analog_tlv), + SOC_DOUBLE_TLV("Playback Boost Volume", PCM512x_ANALOG_GAIN_BOOST, +-- +1.8.3.2 + |