diff options
| author | Andy Owen <andy-alsa@ultra-premium.com> | 2010-10-23 22:12:31 +1100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-10-23 16:59:16 +0200 |
| commit | 861391d3a037fab38020c741baffdb147e1c732a (patch) | |
| tree | 4c036318d4ff911da8537f750e70020498d4759b /sound/pci/ca0106 | |
| parent | 9bfd94132dd97b76af41024eb7e980a5cb41afee (diff) | |
ALSA: ca0106: Create a nice spot for mapping channels to dacs.
This is to allow a future patch to have card specific mappings between
dacs, which is required since the Sound Blaster 5.1vx seems to have a
different mapping to what was previously used.
Signed-off-by: Andy Owen <andy-alsa@ultra-premium.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/ca0106')
| -rw-r--r-- | sound/pci/ca0106/ca0106_main.c | 40 |
1 files changed, 29 insertions, 11 deletions
diff --git a/sound/pci/ca0106/ca0106_main.c b/sound/pci/ca0106/ca0106_main.c index 46ae98d9cb49..da910031edfa 100644 --- a/sound/pci/ca0106/ca0106_main.c +++ b/sound/pci/ca0106/ca0106_main.c @@ -493,16 +493,18 @@ static void snd_ca0106_pcm_free_substream(struct snd_pcm_runtime *runtime) } static const int spi_dacd_reg[] = { - [PCM_FRONT_CHANNEL] = SPI_DACD4_REG, - [PCM_REAR_CHANNEL] = SPI_DACD0_REG, - [PCM_CENTER_LFE_CHANNEL]= SPI_DACD2_REG, - [PCM_UNKNOWN_CHANNEL] = SPI_DACD1_REG, + SPI_DACD0_REG, + SPI_DACD1_REG, + SPI_DACD2_REG, + 0, + SPI_DACD4_REG, }; static const int spi_dacd_bit[] = { - [PCM_FRONT_CHANNEL] = SPI_DACD4_BIT, - [PCM_REAR_CHANNEL] = SPI_DACD0_BIT, - [PCM_CENTER_LFE_CHANNEL]= SPI_DACD2_BIT, - [PCM_UNKNOWN_CHANNEL] = SPI_DACD1_BIT, + SPI_DACD0_BIT, + SPI_DACD1_BIT, + SPI_DACD2_BIT, + 0, + SPI_DACD4_BIT, }; static void restore_spdif_bits(struct snd_ca0106 *chip, int idx) @@ -514,18 +516,34 @@ static void restore_spdif_bits(struct snd_ca0106 *chip, int idx) } } +static int snd_ca0106_channel_dac(struct snd_ca0106_details *details, + int channel_id) +{ + switch (channel_id) { + case PCM_FRONT_CHANNEL: return 4; + case PCM_REAR_CHANNEL: return 0; + case PCM_CENTER_LFE_CHANNEL: return 2; + case PCM_UNKNOWN_CHANNEL: return 1; + } + snd_printk(KERN_DEBUG "ca0106: unknown channel_id %d\n", channel_id); + return 0; +} + static int snd_ca0106_pcm_power_dac(struct snd_ca0106 *chip, int channel_id, int power) { if (chip->details->spi_dac) { - const int reg = spi_dacd_reg[channel_id]; + const int dac = snd_ca0106_channel_dac(chip->details, + channel_id); + const int reg = spi_dacd_reg[dac]; + const int bit = spi_dacd_bit[dac]; if (power) /* Power up */ - chip->spi_dac_reg[reg] &= ~spi_dacd_bit[channel_id]; + chip->spi_dac_reg[reg] &= ~bit; else /* Power down */ - chip->spi_dac_reg[reg] |= spi_dacd_bit[channel_id]; + chip->spi_dac_reg[reg] |= bit; return snd_ca0106_spi_write(chip, chip->spi_dac_reg[reg]); } return 0; |