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ASoC: Implement WM8350 headphone jack detection 

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2009-01-08 15:16:16 +00:00
parent 8a2cd6180f
commit a6ba2b2dab
3 changed files with 125 additions and 0 deletions
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1
include/linux/mfd/wm8350/audio.h
View File

@ -490,6 +490,7 @@
/*
* R231 (0xE7) - Jack Status
*/
#define WM8350_JACK_L_LVL 0x0800
#define WM8350_JACK_R_LVL 0x0400
/*

116
sound/soc/codecs/wm8350.c
View File

@ -51,10 +51,17 @@ struct wm8350_output {
u16 mute;
};
struct wm8350_jack_data {
struct snd_soc_jack *jack;
int report;
};
struct wm8350_data {
struct snd_soc_codec codec;
struct wm8350_output out1;
struct wm8350_output out2;
struct wm8350_jack_data hpl;
struct wm8350_jack_data hpr;
struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
};
@ -1328,6 +1335,95 @@ static int wm8350_resume(struct platform_device *pdev)
return 0;
}
static void wm8350_hp_jack_handler(struct wm8350 *wm8350, int irq, void *data)
{
struct wm8350_data *priv = data;
u16 reg;
int report;
int mask;
struct wm8350_jack_data *jack = NULL;
switch (irq) {
case WM8350_IRQ_CODEC_JCK_DET_L:
jack = &priv->hpl;
mask = WM8350_JACK_L_LVL;
break;
case WM8350_IRQ_CODEC_JCK_DET_R:
jack = &priv->hpr;
mask = WM8350_JACK_R_LVL;
break;
default:
BUG();
}
if (!jack->jack) {
dev_warn(wm8350->dev, "Jack interrupt called with no jack\n");
return;
}
/* Debounce */
msleep(200);
reg = wm8350_reg_read(wm8350, WM8350_JACK_PIN_STATUS);
if (reg & mask)
report = jack->report;
else
report = 0;
snd_soc_jack_report(jack->jack, report, jack->report);
}
/**
* wm8350_hp_jack_detect - Enable headphone jack detection.
*
* @codec: WM8350 codec
* @which: left or right jack detect signal
* @jack: jack to report detection events on
* @report: value to report
*
* Enables the headphone jack detection of the WM8350.
*/
int wm8350_hp_jack_detect(struct snd_soc_codec *codec, enum wm8350_jack which,
struct snd_soc_jack *jack, int report)
{
struct wm8350_data *priv = codec->private_data;
struct wm8350 *wm8350 = codec->control_data;
int irq;
int ena;
switch (which) {
case WM8350_JDL:
priv->hpl.jack = jack;
priv->hpl.report = report;
irq = WM8350_IRQ_CODEC_JCK_DET_L;
ena = WM8350_JDL_ENA;
break;
case WM8350_JDR:
priv->hpr.jack = jack;
priv->hpr.report = report;
irq = WM8350_IRQ_CODEC_JCK_DET_R;
ena = WM8350_JDR_ENA;
break;
default:
return -EINVAL;
}
wm8350_set_bits(wm8350, WM8350_POWER_MGMT_4, WM8350_TOCLK_ENA);
wm8350_set_bits(wm8350, WM8350_JACK_DETECT, ena);
/* Sync status */
wm8350_hp_jack_handler(wm8350, irq, priv);
wm8350_unmask_irq(wm8350, irq);
return 0;
}
EXPORT_SYMBOL_GPL(wm8350_hp_jack_detect);
static struct snd_soc_codec *wm8350_codec;
static int wm8350_probe(struct platform_device *pdev)
@ -1381,6 +1477,13 @@ static int wm8350_probe(struct platform_device *pdev)
wm8350_set_bits(wm8350, WM8350_ROUT2_VOLUME,
WM8350_OUT2_VU | WM8350_OUT2R_MUTE);
wm8350_mask_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_L);
wm8350_mask_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_R);
wm8350_register_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_L,
wm8350_hp_jack_handler, priv);
wm8350_register_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_R,
wm8350_hp_jack_handler, priv);
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
if (ret < 0) {
dev_err(&pdev->dev, "failed to create pcms\n");
@ -1411,8 +1514,21 @@ static int wm8350_remove(struct platform_device *pdev)
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->codec;
struct wm8350 *wm8350 = codec->control_data;
struct wm8350_data *priv = codec->private_data;
int ret;
wm8350_clear_bits(wm8350, WM8350_JACK_DETECT,
WM8350_JDL_ENA | WM8350_JDR_ENA);
wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_4, WM8350_TOCLK_ENA);
wm8350_mask_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_L);
wm8350_mask_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_R);
wm8350_free_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_L);
wm8350_free_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_R);
priv->hpl.jack = NULL;
priv->hpr.jack = NULL;
/* cancel any work waiting to be queued. */
ret = cancel_delayed_work(&codec->delayed_work);

8
sound/soc/codecs/wm8350.h
View File

@ -17,4 +17,12 @@
extern struct snd_soc_dai wm8350_dai;
extern struct snd_soc_codec_device soc_codec_dev_wm8350;
enum wm8350_jack {
WM8350_JDL = 1,
WM8350_JDR = 2,
};
int wm8350_hp_jack_detect(struct snd_soc_codec *codec, enum wm8350_jack which,
struct snd_soc_jack *jack, int report);
#endif