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mfd: stmpe: Support gpio over irq under device tree 

The stmpe_platform_data has a irq_over_gpio field, which allows the
system to read STMPE events whenever an IRQ occurs on a GPIO pin.
This patch adds the ability to configure this field and to use a GPIO
as an IRQ source for boards configuring the STMPE in device tree.

Signed-off-by: Sean Cross <xobs@kosagi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Sean Cross 2014-09-12 11:18:33 +08:00 committed by Lee Jones
parent bdaf67030c
commit 851ec59614
1 changed files with 6 additions and 1 deletions
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7
drivers/mfd/stmpe.c
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@ -1122,7 +1122,12 @@ static void stmpe_of_probe(struct stmpe_platform_data *pdata,
if (pdata->id < 0)
pdata->id = -1;
pdata->irq_trigger = IRQF_TRIGGER_NONE;
pdata->irq_gpio = of_get_named_gpio_flags(np, "irq-gpio", 0,
&pdata->irq_trigger);
if (gpio_is_valid(pdata->irq_gpio))
pdata->irq_over_gpio = 1;
else
pdata->irq_trigger = IRQF_TRIGGER_NONE;
of_property_read_u32(np, "st,autosleep-timeout",
&pdata->autosleep_timeout);