Implements an interrupt handler that fires when a headphone is inserted. A jack must be provided to the codec via snd_soc_component_driver .set_jack
Signed-off-by: Carl Philipp Klemm philipp@uvos.xyz --- sound/soc/codecs/cpcap.c | 104 +++++++++++++++++++++++++++++++++++---- 1 file changed, 94 insertions(+), 10 deletions(-)
diff --git a/sound/soc/codecs/cpcap.c b/sound/soc/codecs/cpcap.c index 3c2bc98031b5..ed418ac75eca 100644 --- a/sound/soc/codecs/cpcap.c +++ b/sound/soc/codecs/cpcap.c @@ -15,6 +15,7 @@ #include <sound/core.h> #include <sound/soc.h> #include <sound/tlv.h> +#include <sound/jack.h>
/* Register 512 CPCAP_REG_VAUDIOC --- Audio Regulator and Bias Voltage */ #define CPCAP_BIT_AUDIO_LOW_PWR 6 @@ -252,8 +253,14 @@ enum cpcap_dai { };
struct cpcap_audio { + struct device *dev; struct snd_soc_component *component; struct regmap *regmap; + struct snd_soc_jack *hp_jack; + + struct delayed_work jack_detect_work; + + int hp_irq;
u16 vendor;
@@ -603,6 +610,21 @@ static int cpcap_input_left_mux_put_enum(struct snd_kcontrol *kcontrol, return 0; }
+static struct snd_soc_jack_pin headset_jack_pins[] = { + { + .pin = "Headset Right Playback Route", + .mask = SND_JACK_HEADPHONE, + }, + { + .pin = "Headset Left Playback Route", + .mask = SND_JACK_HEADPHONE, + }, + { + .pin = "Headphones", + .mask = SND_JACK_HEADPHONE, + } +}; + static const struct snd_kcontrol_new cpcap_input_left_mux = SOC_DAPM_ENUM_EXT("Input Left", cpcap_input_left_mux_enum, cpcap_input_left_mux_get_enum, @@ -1561,8 +1583,6 @@ static int cpcap_dai_mux(struct cpcap_audio *cpcap, bool swap_dai_configuration) u16 voice_mask = BIT(CPCAP_BIT_DIG_AUD_IN); int err;
- - if (!swap_dai_configuration) { /* Codec on DAI0, HiFi on DAI1 */ voice_val = 0; @@ -1586,6 +1606,44 @@ static int cpcap_dai_mux(struct cpcap_audio *cpcap, bool swap_dai_configuration) return 0; }
+static irqreturn_t cpcap_hp_irq_thread(int irq, void *arg) +{ + struct cpcap_audio *cpcap = arg; + int val = -1; + bool plugged; + + regmap_read(cpcap->regmap, CPCAP_REG_INTS1, &val); + plugged = val & (1<<9); + + if (!cpcap->component) { + dev_warn(cpcap->dev, "%s called before component is ready.", __func__); + return IRQ_HANDLED; + } + + if (!cpcap->hp_jack) { + dev_warn(cpcap->dev, "%s called before jack is ready.", __func__); + return IRQ_HANDLED; + } + + snd_soc_jack_report(cpcap->hp_jack, plugged ? 0 : SND_JACK_HEADPHONE, SND_JACK_HEADPHONE); + + return IRQ_HANDLED; +} + +static int cpcap_set_jack_detect(struct snd_soc_component *component, + struct snd_soc_jack *hp_jack, void *data) +{ + struct cpcap_audio *cpcap = snd_soc_component_get_drvdata(component); + + if (!cpcap->hp_jack) { + dev_info(cpcap->dev, "registering jack"); + cpcap->hp_jack = hp_jack; + snd_soc_jack_add_pins(hp_jack, ARRAY_SIZE(headset_jack_pins), headset_jack_pins); + } + + return 0; +} + static int cpcap_audio_reset(struct snd_soc_component *component, bool swap_dai_configuration) { @@ -1628,13 +1686,9 @@ static int cpcap_audio_reset(struct snd_soc_component *component,
static int cpcap_soc_probe(struct snd_soc_component *component) { - struct cpcap_audio *cpcap; + struct cpcap_audio *cpcap = snd_soc_component_get_drvdata(component); int err;
- cpcap = devm_kzalloc(component->dev, sizeof(*cpcap), GFP_KERNEL); - if (!cpcap) - return -ENOMEM; - snd_soc_component_set_drvdata(component, cpcap); cpcap->component = component;
cpcap->regmap = dev_get_regmap(component->dev->parent, NULL); @@ -1657,6 +1711,7 @@ static struct snd_soc_component_driver soc_codec_dev_cpcap = { .num_dapm_widgets = ARRAY_SIZE(cpcap_dapm_widgets), .dapm_routes = intercon, .num_dapm_routes = ARRAY_SIZE(intercon), + .set_jack = cpcap_set_jack_detect, .idle_bias_on = 1, .use_pmdown_time = 1, .endianness = 1, @@ -1665,13 +1720,42 @@ static struct snd_soc_component_driver soc_codec_dev_cpcap = {
static int cpcap_codec_probe(struct platform_device *pdev) { - struct device_node *codec_node = - of_get_child_by_name(pdev->dev.parent->of_node, "audio-codec"); + struct cpcap_audio *cpcap; + struct device_node *codec_node; + int ret;
+ codec_node = of_get_child_by_name(pdev->dev.parent->of_node, "audio-codec"); pdev->dev.of_node = codec_node;
- return devm_snd_soc_register_component(&pdev->dev, &soc_codec_dev_cpcap, + cpcap = devm_kzalloc(&pdev->dev, sizeof(*cpcap), GFP_KERNEL); + if (!cpcap) + return -ENOMEM; + dev_set_drvdata(&pdev->dev, cpcap); + + ret = devm_snd_soc_register_component(&pdev->dev, &soc_codec_dev_cpcap, cpcap_dai, ARRAY_SIZE(cpcap_dai)); + if (ret < 0) + return ret; + + cpcap->hp_irq = platform_get_irq_byname(pdev, "hpplugged"); + if (cpcap->hp_irq < 0) + return -ENODEV; + + cpcap->dev = &pdev->dev; + + ret = devm_request_threaded_irq(&pdev->dev, cpcap->hp_irq, NULL, + cpcap_hp_irq_thread, + IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING | + IRQF_ONESHOT, + "cpcap-codec-headphone", cpcap); + if (ret) { + dev_err(&pdev->dev, "could not get irq: %i\n", + ret); + return ret; + } + + return 0; }
static struct platform_driver cpcap_codec_driver = {