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Input: ads7846 - allow specifying irq trigger type in platform data 

On some platforms, for example with GPIO interrupts on mpc5121,
it is not possible to configure falling edge interrupts.

Specifying irq trigger type in platform data structure
allows using ads7846 driver on such platforms.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Anatolij Gustschin 2010-06-28 01:25:19 -07:00 committed by Dmitry Torokhov
parent c8f2edc56a
commit 7804302b14
2 changed files with 5 additions and 1 deletions
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5
drivers/input/touchscreen/ads7846.c
View File

@ -1174,7 +1174,10 @@ static int __devinit ads7846_probe(struct spi_device *spi)
goto err_put_regulator;
}
if (request_irq(spi->irq, ads7846_irq, IRQF_TRIGGER_FALLING,
if (!pdata->irq_flags)
pdata->irq_flags = IRQF_TRIGGER_FALLING;
if (request_irq(spi->irq, ads7846_irq, pdata->irq_flags,
spi->dev.driver->name, ts)) {
dev_info(&spi->dev,
"trying pin change workaround on irq %d\n", spi->irq);

1
include/linux/spi/ads7846.h
View File

@ -54,5 +54,6 @@ struct ads7846_platform_data {
void (*filter_cleanup)(void *filter_data);
void (*wait_for_sync)(void);
bool wakeup;
unsigned long irq_flags;
};