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ASoC: twl6040: Add jack support for headset and handset

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This patch adds support for reporting twl6040 headset and
handset jack events.

The machine driver retrieves and report the status  through
twl6040_hs_jack_detect.

A workq is used to debounce of the irq.

Signed-off-by: Jorge Eduardo Candelaria <jorge.candelaria@ti.com>
Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Margarita Olaya Cabrera <magi.olaya@ti.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Jorge Eduardo Candelaria 2010-12-10 20:45:17 -06:00 committed by Liam Girdwood
parent dcdeda4a60
commit a2d2362edf
2 changed files with 74 additions and 0 deletions
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67
sound/soc/codecs/twl6040.c
View file

@ -42,6 +42,11 @@
#define TWL6040_RATES (SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
#define TWL6040_FORMATS (SNDRV_PCM_FMTBIT_S32_LE)
struct twl6040_jack_data {
struct snd_soc_jack *jack;
int report;
};
/* codec private data */
struct twl6040_data {
int audpwron;
@ -52,6 +57,11 @@ struct twl6040_data {
unsigned int sysclk;
struct snd_pcm_hw_constraint_list *sysclk_constraints;
struct completion ready;
struct twl6040_jack_data hs_jack;
struct snd_soc_codec *codec;
struct workqueue_struct *workqueue;
struct delayed_work delayed_work;
struct mutex mutex;
};
/*
@ -381,6 +391,47 @@ static int twl6040_power_mode_event(struct snd_soc_dapm_widget *w,
return 0;
}
void twl6040_hs_jack_report(struct snd_soc_codec *codec,
struct snd_soc_jack *jack, int report)
{
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
int status;
mutex_lock(&priv->mutex);
/* Sync status */
status = twl6040_read_reg_volatile(codec, TWL6040_REG_STATUS);
if (status & TWL6040_PLUGCOMP)
snd_soc_jack_report(jack, report, report);
else
snd_soc_jack_report(jack, 0, report);
mutex_unlock(&priv->mutex);
}
void twl6040_hs_jack_detect(struct snd_soc_codec *codec,
struct snd_soc_jack *jack, int report)
{
struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
struct twl6040_jack_data *hs_jack = &priv->hs_jack;
hs_jack->jack = jack;
hs_jack->report = report;
twl6040_hs_jack_report(codec, hs_jack->jack, hs_jack->report);
}
EXPORT_SYMBOL_GPL(twl6040_hs_jack_detect);
static void twl6040_accessory_work(struct work_struct *work)
{
struct twl6040_data *priv = container_of(work,
struct twl6040_data, delayed_work.work);
struct snd_soc_codec *codec = priv->codec;
struct twl6040_jack_data *hs_jack = &priv->hs_jack;
twl6040_hs_jack_report(codec, hs_jack->jack, hs_jack->report);
}
/* audio interrupt handler */
static irqreturn_t twl6040_naudint_handler(int irq, void *data)
{
@ -396,6 +447,9 @@ static irqreturn_t twl6040_naudint_handler(int irq, void *data)
break;
case TWL6040_PLUGINT:
case TWL6040_UNPLUGINT:
queue_delayed_work(priv->workqueue, &priv->delayed_work,
msecs_to_jiffies(200));
break;
case TWL6040_HOOKINT:
break;
case TWL6040_HFINT:
@ -1023,6 +1077,8 @@ static int twl6040_probe(struct snd_soc_codec *codec)
return -ENOMEM;
snd_soc_codec_set_drvdata(codec, priv);
priv->codec = codec;
if (twl_codec) {
audpwron = twl_codec->audpwron_gpio;
naudint = twl_codec->naudint_irq;
@ -1033,6 +1089,14 @@ static int twl6040_probe(struct snd_soc_codec *codec)
priv->audpwron = audpwron;
priv->naudint = naudint;
priv->workqueue = create_singlethread_workqueue("twl6040-codec");
if (!priv->workqueue)
goto work_err;
INIT_DELAYED_WORK(&priv->delayed_work, twl6040_accessory_work);
mutex_init(&priv->mutex);
init_completion(&priv->ready);
@ -1089,6 +1153,8 @@ gpio2_err:
if (gpio_is_valid(audpwron))
gpio_free(audpwron);
gpio1_err:
destroy_workqueue(priv->workqueue);
work_err:
kfree(priv);
return ret;
}
@ -1107,6 +1173,7 @@ static int twl6040_remove(struct snd_soc_codec *codec)
if (naudint)
free_irq(naudint, codec);
destroy_workqueue(priv->workqueue);
kfree(priv);
return 0;

7
sound/soc/codecs/twl6040.h
View file

@ -135,4 +135,11 @@
#define TWL6040_HPPLL_ID 1
#define TWL6040_LPPLL_ID 2
/* STATUS (0x2E) fields */
#define TWL6040_PLUGCOMP 0x02
void twl6040_hs_jack_detect(struct snd_soc_codec *codec,
struct snd_soc_jack *jack, int report);
#endif /* End of __TWL6040_H__ */