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ASoC: pcm512x: Implement analogue volume control

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There are some analogue volume controls in page 1 of the register map so
implement support for them now that we can access the registers.

Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Mark Brown 2014-02-07 19:16:56 +00:00
parent 806d646607
commit 5be2fc20b1
2 changed files with 14 additions and 0 deletions
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6
sound/soc/codecs/pcm512x.c
View File

@ -184,6 +184,8 @@ static bool pcm512x_volatile(struct device *dev, unsigned int reg)
}
static const DECLARE_TLV_DB_SCALE(digital_tlv, -10350, 50, 1);
static const DECLARE_TLV_DB_SCALE(analog_tlv, -600, 600, 0);
static const DECLARE_TLV_DB_SCALE(boost_tlv, 0, 80, 0);
static const char * const pcm512x_dsp_program_texts[] = {
"FIR interpolation with de-emphasis",
@ -261,6 +263,10 @@ static const struct soc_enum pcm512x_veds =
static const struct snd_kcontrol_new pcm512x_controls[] = {
SOC_DOUBLE_R_TLV("Playback Digital Volume", PCM512x_DIGITAL_VOLUME_2,
PCM512x_DIGITAL_VOLUME_3, 0, 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,
PCM512x_AGBL_SHIFT, PCM512x_AGBR_SHIFT, 1, 0, boost_tlv),
SOC_DOUBLE("Playback Digital Switch", PCM512x_MUTE, PCM512x_RQML_SHIFT,
PCM512x_RQMR_SHIFT, 1, 1),

8
sound/soc/codecs/pcm512x.h
View File

@ -151,4 +151,12 @@
#define PCM512x_AMLE_SHIFT 1
#define PCM512x_AMLR_SHIFT 0
/* Page 1, Register 2 - analog volume control */
#define PCM512x_RAGN_SHIFT 0
#define PCM512x_LAGN_SHIFT 4
/* Page 1, Register 7 - analog boost control */
#define PCM512x_AGBR_SHIFT 0
#define PCM512x_AGBL_SHIFT 4
#endif