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 <x...@kosagi.com>
---
drivers/mfd/stmpe.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c
index 3b6bfa7..4c42b05 100644
--- a/drivers/mfd/stmpe.c
+++ b/drivers/mfd/stmpe.c
@@ -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);
--
2.1.0
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