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mfd: tps6586x: Implement irq_set_wake

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rtc-tps6586x calls enable/disable_irq_wake() during suspend/resume. Since
the main tps6586x irq_chip doesn't implement .irq_set_wake, this causes
the RTC's enable_irq_wake() to fail, and the disable_irq_wake() to spew a
WARN about unbalanced wake disable. Solve this by implementing
.irq_set_wake.

Also, I assume that enable_irq_wake() shouldn't be called unconditionally
in tps6586x_irq_init(), since this is now triggered by IRQ children
setting up their cascaded IRQs for wake. So, remove that.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Stephen Warren 2013-09-06 17:17:13 -06:00 committed by Lee Jones
parent b5f90240e1
commit 234506ad3f
1 changed files with 15 additions and 3 deletions
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18
drivers/mfd/tps6586x.c
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@ -124,6 +124,7 @@ struct tps6586x {
struct i2c_client *client;
struct regmap *regmap;
int irq;
struct irq_chip irq_chip;
struct mutex irq_lock;
int irq_base;
@ -261,12 +262,23 @@ static void tps6586x_irq_sync_unlock(struct irq_data *data)
mutex_unlock(&tps6586x->irq_lock);
}
#ifdef CONFIG_PM_SLEEP
static int tps6586x_irq_set_wake(struct irq_data *irq_data, unsigned int on)
{
struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
return irq_set_irq_wake(tps6586x->irq, on);
}
#else
#define tps6586x_irq_set_wake NULL
#endif
static struct irq_chip tps6586x_irq_chip = {
.name = "tps6586x",
.irq_bus_lock = tps6586x_irq_lock,
.irq_bus_sync_unlock = tps6586x_irq_sync_unlock,
.irq_disable = tps6586x_irq_disable,
.irq_enable = tps6586x_irq_enable,
.irq_set_wake = tps6586x_irq_set_wake,
};
static int tps6586x_irq_map(struct irq_domain *h, unsigned int virq,
@ -331,6 +343,8 @@ static int tps6586x_irq_init(struct tps6586x *tps6586x, int irq,
int new_irq_base;
int irq_num = ARRAY_SIZE(tps6586x_irqs);
tps6586x->irq = irq;
mutex_init(&tps6586x->irq_lock);
for (i = 0; i < 5; i++) {
tps6586x->mask_reg[i] = 0xff;
@ -360,10 +374,8 @@ static int tps6586x_irq_init(struct tps6586x *tps6586x, int irq,
ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT,
"tps6586x", tps6586x);
if (!ret) {
if (!ret)
device_init_wakeup(tps6586x->dev, 1);
enable_irq_wake(irq);
}
return ret;
}