diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2010-09-09 12:24:35 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-09-09 10:53:37 +0200 |
| commit | 2dbf0ea29c1e4dff4ee5f0c59b367168fa2e5a40 (patch) | |
| tree | f8dbd6df7e2cbaaf397fc65a15f284ba540e5c01 /sound | |
| parent | 84cf83a28d4a3cd1fac1384cbaa4ed0ba650d309 (diff) | |
ALSA: virtuoso: Xonar DS: add stereo upmixing to center/LFE channels
Add the possibility to route a mix of the two channels of stereo data to
the center and LFE outputs. Due to a WM8766 restriction, all surround
and back channels also get the mixed L/R signal in this case.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/oxygen/xonar_wm87x6.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/sound/pci/oxygen/xonar_wm87x6.c b/sound/pci/oxygen/xonar_wm87x6.c index cee07fe3aa36..aceaaa036da6 100644 --- a/sound/pci/oxygen/xonar_wm87x6.c +++ b/sound/pci/oxygen/xonar_wm87x6.c @@ -377,6 +377,24 @@ static void update_wm87x6_mute(struct oxygen *chip) (chip->dac_mute ? WM8766_DMUTE_MASK : 0)); } +static void update_wm8766_center_lfe_mix(struct oxygen *chip, bool mixed) +{ + struct xonar_wm87x6 *data = chip->model_data; + unsigned int reg; + + /* + * The WM8766 can mix left and right channels, but this setting + * applies to all three stereo pairs. + */ + reg = data->wm8766_regs[WM8766_DAC_CTRL] & + ~(WM8766_PL_LEFT_MASK | WM8766_PL_RIGHT_MASK); + if (mixed) + reg |= WM8766_PL_LEFT_LRMIX | WM8766_PL_RIGHT_LRMIX; + else + reg |= WM8766_PL_LEFT_LEFT | WM8766_PL_RIGHT_RIGHT; + wm8766_write_cached(chip, WM8766_DAC_CTRL, reg); +} + static void xonar_ds_gpio_changed(struct oxygen *chip) { xonar_ds_handle_hp_jack(chip); @@ -1067,6 +1085,7 @@ static const struct oxygen_model model_xonar_ds = { .set_adc_params = set_wm8776_adc_params, .update_dac_volume = update_wm87x6_volume, .update_dac_mute = update_wm87x6_mute, + .update_center_lfe_mix = update_wm8766_center_lfe_mix, .gpio_changed = xonar_ds_gpio_changed, .dac_tlv = wm87x6_dac_db_scale, .model_data_size = sizeof(struct xonar_wm87x6), |