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ALSA: oxygen: modify adjust_dg_dac_routing function

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When selecting the audio output destinations (headphones,
FP headphones, multichannel output), the channel routing
should be changed depending on what destination selected.
Also unnecessary I2S channels are digitally muted. This
function called when the user selects the destination
in the ALSA mixer.

Signed-off-by: Roman Volkov <v1ron@mail.ru>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
This commit is contained in:
Roman Volkov 2014-01-24 16:18:11 +04:00 committed by Clemens Ladisch
parent fddc106bc3
commit 1f91ecc14d
2 changed files with 22 additions and 24 deletions
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44
sound/pci/oxygen/xonar_dg.c
View File

@ -262,33 +262,29 @@ static void set_cs4245_adc_params(struct oxygen *chip,
cs4245_write_spi(chip, CS4245_MCLK_FREQ);
}
static inline unsigned int shift_bits(unsigned int value,
unsigned int shift_from,
unsigned int shift_to,
unsigned int mask)
{
if (shift_from < shift_to)
return (value << (shift_to - shift_from)) & mask;
else
return (value >> (shift_from - shift_to)) & mask;
}
static unsigned int adjust_dg_dac_routing(struct oxygen *chip,
unsigned int play_routing)
{
return (play_routing & OXYGEN_PLAY_DAC0_SOURCE_MASK) |
shift_bits(play_routing,
OXYGEN_PLAY_DAC2_SOURCE_SHIFT,
OXYGEN_PLAY_DAC1_SOURCE_SHIFT,
OXYGEN_PLAY_DAC1_SOURCE_MASK) |
shift_bits(play_routing,
OXYGEN_PLAY_DAC1_SOURCE_SHIFT,
OXYGEN_PLAY_DAC2_SOURCE_SHIFT,
OXYGEN_PLAY_DAC2_SOURCE_MASK) |
shift_bits(play_routing,
OXYGEN_PLAY_DAC0_SOURCE_SHIFT,
OXYGEN_PLAY_DAC3_SOURCE_SHIFT,
OXYGEN_PLAY_DAC3_SOURCE_MASK);
struct dg *data = chip->model_data;
unsigned int routing = 0;
switch (data->pcm_output) {
case PLAYBACK_DST_HP:
case PLAYBACK_DST_HP_FP:
oxygen_write8_masked(chip, OXYGEN_PLAY_ROUTING,
OXYGEN_PLAY_MUTE23 | OXYGEN_PLAY_MUTE45 |
OXYGEN_PLAY_MUTE67, OXYGEN_PLAY_MUTE_MASK);
break;
case PLAYBACK_DST_MULTICH:
routing = (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
(2 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
(1 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
(0 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT);
oxygen_write8_masked(chip, OXYGEN_PLAY_ROUTING,
OXYGEN_PLAY_MUTE01, OXYGEN_PLAY_MUTE_MASK);
break;
}
return routing;
}
static int output_switch_info(struct snd_kcontrol *ctl,

2
sound/pci/oxygen/xonar_dg.h
View File

@ -26,6 +26,8 @@ enum cs4245_shadow_operation {
struct dg {
/* shadow copy of the CS4245 register space */
unsigned char cs4245_shadow[17];
/* output select: headphone/speakers */
unsigned char pcm_output;
unsigned int output_sel;
s8 input_vol[4][2];
unsigned int input_sel;