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ASoC: sun4i-codec: support hp-det-gpios property

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[ Upstream commit a149377c033afe6557c50892ebbfc0e8b7e2e253 ]

Add support for GPIO headphone detection with the hp-det-gpios
property. In order for this to properly disable the path upon
removal of headphones, the output must be labelled Headphone which
is a common sink in the driver.

Describe a headphone jack and detection GPIO in the driver, check for
a corresponding device tree node, and enable jack detection in a new
machine init function if described.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Signed-off-by: Ryan Walklin <ryan@testtoast.com>

--
Changelog v1..v2:
- Separate DAPM changes into separate patch and add rationale.

Tested-by: Philippe Simons <simons.philippe@gmail.com>
Link: https://patch.msgid.link/20250214220247.10810-4-ryan@testtoast.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ryan Walklin
2025-02-15 11:02:25 +13:00
committed by Greg Kroah-Hartman
parent f8d9460347
commit baf667f23f
1 changed files with 53 additions and 0 deletions
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53
sound/soc/sunxi/sun4i-codec.c
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@@ -25,6 +25,7 @@
#include <linux/gpio/consumer.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
@@ -239,6 +240,7 @@ struct sun4i_codec {
struct clk *clk_module;
struct reset_control *rst;
struct gpio_desc *gpio_pa;
struct gpio_desc *gpio_hp;
/* ADC_FIFOC register is at different offset on different SoCs */
struct regmap_field *reg_adc_fifoc;
@@ -1277,6 +1279,49 @@ static struct snd_soc_dai_driver dummy_cpu_dai = {
.ops = &dummy_dai_ops,
};
static struct snd_soc_jack sun4i_headphone_jack;
static struct snd_soc_jack_pin sun4i_headphone_jack_pins[] = {
{ .pin = "Headphone", .mask = SND_JACK_HEADPHONE },
};
static struct snd_soc_jack_gpio sun4i_headphone_jack_gpio = {
.name = "hp-det",
.report = SND_JACK_HEADPHONE,
.debounce_time = 150,
};
static int sun4i_codec_machine_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
struct sun4i_codec *scodec = snd_soc_card_get_drvdata(card);
int ret;
if (scodec->gpio_hp) {
ret = snd_soc_card_jack_new_pins(card, "Headphone Jack",
SND_JACK_HEADPHONE,
&sun4i_headphone_jack,
sun4i_headphone_jack_pins,
ARRAY_SIZE(sun4i_headphone_jack_pins));
if (ret) {
dev_err(rtd->dev,
"Headphone jack creation failed: %d\n", ret);
return ret;
}
sun4i_headphone_jack_gpio.desc = scodec->gpio_hp;
ret = snd_soc_jack_add_gpios(&sun4i_headphone_jack, 1,
&sun4i_headphone_jack_gpio);
if (ret) {
dev_err(rtd->dev, "Headphone GPIO not added: %d\n", ret);
return ret;
}
}
return 0;
}
static struct snd_soc_dai_link *sun4i_codec_create_link(struct device *dev,
int *num_links)
{
@@ -1302,6 +1347,7 @@ static struct snd_soc_dai_link *sun4i_codec_create_link(struct device *dev,
link->codecs->name = dev_name(dev);
link->platforms->name = dev_name(dev);
link->dai_fmt = SND_SOC_DAIFMT_I2S;
link->init = sun4i_codec_machine_init;
*num_links = 1;
@@ -1742,6 +1788,13 @@ static int sun4i_codec_probe(struct platform_device *pdev)
return ret;
}
scodec->gpio_hp = devm_gpiod_get_optional(&pdev->dev, "hp-det", GPIOD_IN);
if (IS_ERR(scodec->gpio_hp)) {
ret = PTR_ERR(scodec->gpio_hp);
dev_err_probe(&pdev->dev, ret, "Failed to get hp-det gpio\n");
return ret;
}
/* reg_field setup */
scodec->reg_adc_fifoc = devm_regmap_field_alloc(&pdev->dev,
scodec->regmap,