diff options
-rw-r--r-- | sound/soc/codecs/wm8903.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c index b114468d6453..b4f2c906b2f3 100644 --- a/sound/soc/codecs/wm8903.c +++ b/sound/soc/codecs/wm8903.c @@ -25,6 +25,7 @@ #include <linux/i2c.h> #include <linux/regmap.h> #include <linux/slab.h> +#include <linux/irq.h> #include <sound/core.h> #include <sound/jack.h> #include <sound/pcm.h> @@ -2036,6 +2037,39 @@ static const struct regmap_config wm8903_regmap = { .num_reg_defaults = ARRAY_SIZE(wm8903_reg_defaults), }; +static int wm8903_set_pdata_irq_trigger(struct i2c_client *i2c, + struct wm8903_platform_data *pdata) +{ + struct irq_data *irq_data = irq_get_irq_data(i2c->irq); + if (!irq_data) { + dev_err(&i2c->dev, "Invalid IRQ: %d\n", + i2c->irq); + return -EINVAL; + } + + switch (irqd_get_trigger_type(irq_data)) { + case IRQ_TYPE_NONE: + /* + * We assume the controller imposes no restrictions, + * so we are able to select active-high + */ + /* Fall-through */ + case IRQ_TYPE_LEVEL_HIGH: + pdata->irq_active_low = false; + break; + case IRQ_TYPE_LEVEL_LOW: + pdata->irq_active_low = true; + break; + default: + dev_err(&i2c->dev, + "Unsupported IRQ_TYPE %x\n", + irqd_get_trigger_type(irq_data)); + return -EINVAL; + } + + return 0; +} + static __devinit int wm8903_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { @@ -2071,6 +2105,12 @@ static __devinit int wm8903_i2c_probe(struct i2c_client *i2c, dev_err(&i2c->dev, "Failed to allocate pdata\n"); return -ENOMEM; } + + if (i2c->irq) { + ret = wm8903_set_pdata_irq_trigger(i2c, wm8903->pdata); + if (ret != 0) + return ret; + } } ret = regmap_read(wm8903->regmap, WM8903_SW_RESET_AND_ID, &val); |