The WM8960 DAC has a "DAC Slope" switch that can toggle between two different output filter curves. This patch adds support for it.
Signed-off-by: Lukas F. Hartmann <[email protected]> --- sound/soc/codecs/wm8960.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c index 660ec46ee..a15cd037d 100644 --- a/sound/soc/codecs/wm8960.c +++ b/sound/soc/codecs/wm8960.c @@ -126,6 +126,7 @@ struct wm8960_priv { struct snd_soc_dapm_widget *rout1; struct snd_soc_dapm_widget *out3; bool deemph; + bool dacslope; int lrclk; int bclk; int sysclk; @@ -217,6 +218,33 @@ static int wm8960_put_deemph(struct snd_kcontrol *kcontrol, return wm8960_set_deemph(component); } +static int wm8960_put_dacslope(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); + unsigned int val = ucontrol->value.integer.value[0]; + + if (val > 1) + return -EINVAL; + + wm8960->dacslope = val; + + return snd_soc_component_update_bits(component, WM8960_DACCTL1, + 0x2, val<<1); +} + +static int wm8960_get_dacslope(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct wm8960_priv *wm8960 = snd_soc_component_get_drvdata(component); + + ucontrol->value.integer.value[0] = wm8960->dacslope; + return 0; +} + + static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1); static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1725, 75, 0); static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); @@ -272,6 +300,9 @@ SOC_ENUM("DAC Polarity", wm8960_enum[1]), SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0, wm8960_get_deemph, wm8960_put_deemph), +SOC_SINGLE_BOOL_EXT("DAC Slope", 0, + wm8960_get_dacslope, wm8960_put_dacslope), + SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]), SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]), SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0), -- 2.28.0
