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ARM: shmobile: ap4evb: Simplify tsc2007 pen state read function

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The pen state is retrieved by reading the state of a pin used as an IRQ.
There's no need to reconfigure the pin as a pure GPIO, as the IRQ pin
state can be read.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Laurent Pinchart 2013-04-21 18:56:15 +02:00 committed by Simon Horman
parent 5436c2b9b4
commit 4a666a783b
1 changed files with 2 additions and 11 deletions
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13
arch/arm/mach-shmobile/board-ap4evb.c
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@ -1037,22 +1037,13 @@ out:
#define IRQ7 evt2irq(0x02e0) /* IRQ7A */
static int ts_get_pendown_state(void)
{
int val;
gpio_free(GPIO_TSC_IRQ);
gpio_request_one(GPIO_TSC_PORT, GPIOF_IN, NULL);
val = gpio_get_value(GPIO_TSC_PORT);
gpio_request(GPIO_TSC_IRQ, NULL);
return !val;
return !gpio_get_value(GPIO_TSC_PORT);
}
static int ts_init(void)
{
gpio_request(GPIO_TSC_IRQ, NULL);
gpio_request_one(GPIO_TSC_PORT, GPIOF_IN, NULL);
return 0;
}