target/linux/brcm2708/patches-3.18/0043-pcm512x-Use-a-range-macro-for-Volume-and-rename-to-P.patch

   1 From 197803c176d753bc23fdf705306596cbd1e8b658 Mon Sep 17 00:00:00 2001
   2 From: Howard Mitchell <hm@hmbedded.co.uk>
   3 Date: Fri, 28 Mar 2014 16:40:31 +0000
   4 Subject: [PATCH 043/114] pcm512x: Use a range macro for Volume and rename to
   5  PCM.
   6
   7 This allows limiting the output gain to avoid clipping in the
   8 DAC ouput stages.
   9 ---
  10  sound/soc/codecs/pcm512x.c | 4 ++--
  11  1 file changed, 2 insertions(+), 2 deletions(-)
  12
  13 diff --git a/sound/soc/codecs/pcm512x.c b/sound/soc/codecs/pcm512x.c
  14 index 640c991..b405719 100644
  15 --- a/sound/soc/codecs/pcm512x.c
  16 +++ b/sound/soc/codecs/pcm512x.c
  17 @@ -259,8 +259,8 @@ static const struct soc_enum pcm512x_veds =
  18                         pcm512x_ramp_step_text);
  19
  20  static const struct snd_kcontrol_new pcm512x_controls[] = {
  21 -SOC_DOUBLE_R_TLV("Digital Playback Volume", PCM512x_DIGITAL_VOLUME_2,
  22 -                PCM512x_DIGITAL_VOLUME_3, 0, 255, 1, digital_tlv),
  23 +SOC_DOUBLE_R_RANGE_TLV("PCM", PCM512x_DIGITAL_VOLUME_2,
  24 +                PCM512x_DIGITAL_VOLUME_3, 0, 40, 255, 1, digital_tlv),
  25  SOC_DOUBLE_TLV("Playback Volume", PCM512x_ANALOG_GAIN_CTRL,
  26                PCM512x_LAGN_SHIFT, PCM512x_RAGN_SHIFT, 1, 1, analog_tlv),
  27  SOC_DOUBLE_TLV("Playback Boost Volume", PCM512x_ANALOG_GAIN_BOOST,
  28 --
  29 1.8.3.2
  30