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ASoC: codec: wcd938x: Add switch control for selecting CTIA/OMTP Headset

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Add switch control for selecting CTIA or OMTP Headset by swapping
gnd and mic with the help of GPIO.

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Co-developed-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
Signed-off-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
Link: https://lore.kernel.org/r/1644668672-29790-2-git-send-email-quic_srivasam@quicinc.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Srinivasa Rao Mandadapu 2022-02-12 17:54:31 +05:30 committed by Mark Brown
parent e7c799e76f
commit 013cc2aea0
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GPG Key ID: 24D68B725D5487D0
1 changed files with 38 additions and 0 deletions
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38
sound/soc/codecs/wcd938x.c
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@ -194,6 +194,7 @@ struct wcd938x_priv {
int ear_rx_path;
int variant;
int reset_gpio;
int us_euro_gpio;
u32 micb1_mv;
u32 micb2_mv;
u32 micb3_mv;
@ -4196,6 +4197,33 @@ static void wcd938x_dt_parse_micbias_info(struct device *dev, struct wcd938x_pri
dev_info(dev, "%s: Micbias4 DT property not found\n", __func__);
}
static bool wcd938x_swap_gnd_mic(struct snd_soc_component *component, bool active)
{
int value;
struct wcd938x_priv *wcd938x;
if (!component) {
dev_err(component->dev, "%s component is NULL\n", __func__);
return false;
}
wcd938x = snd_soc_component_get_drvdata(component);
if (!wcd938x) {
dev_err(component->dev, "%s private data is NULL\n", __func__);
return false;
}
value = gpio_get_value(wcd938x->us_euro_gpio);
gpio_set_value(wcd938x->us_euro_gpio, !value);
/* 20us sleep required after changing the gpio state*/
usleep_range(20, 30);
return true;
}
static int wcd938x_populate_dt_data(struct wcd938x_priv *wcd938x, struct device *dev)
{
struct wcd_mbhc_config *cfg = &wcd938x->mbhc_cfg;
@ -4208,6 +4236,16 @@ static int wcd938x_populate_dt_data(struct wcd938x_priv *wcd938x, struct device
return wcd938x->reset_gpio;
}
wcd938x->us_euro_gpio = of_get_named_gpio(dev->of_node, "us-euro-gpios", 0);
if (wcd938x->us_euro_gpio < 0) {
dev_err(dev, "Failed to get us-euro-gpios gpio: err = %d\n", wcd938x->us_euro_gpio);
} else {
cfg->swap_gnd_mic = wcd938x_swap_gnd_mic;
gpio_direction_output(wcd938x->us_euro_gpio, 0);
/* 20us sleep required after pulling the reset gpio to LOW */
usleep_range(20, 30);
}
wcd938x->supplies[0].supply = "vdd-rxtx";
wcd938x->supplies[1].supply = "vdd-io";
wcd938x->supplies[2].supply = "vdd-buck";