[PATCH 1/6] gpio/stmpe-gpio: set GPIO alternate function while requesting
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From: Luotao Fu on 24 Jun 2010 07:20 add reuqest hook to the gpio chip, so that we can make sure that the GPIO pin is setted to the correct GPIO alternate function after we have requested the GPIO pin. Signed-off-by: Luotao Fu <l.fu(a)pengutronix.de> --- drivers/gpio/stmpe-gpio.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/drivers/gpio/stmpe-gpio.c b/drivers/gpio/stmpe-gpio.c index bd49a3a..a4de271 100644 --- a/drivers/gpio/stmpe-gpio.c +++ b/drivers/gpio/stmpe-gpio.c @@ -98,6 +98,14 @@ static int stmpe_gpio_to_irq(struct gpio_chip *chip, unsigned offset) return stmpe_gpio->irq_base + offset; } +static int stmpe_gpio_request(struct gpio_chip *chip, unsigned offset) +{ + struct stmpe_gpio *stmpe_gpio = to_stmpe_gpio(chip); + struct stmpe *stmpe = stmpe_gpio->stmpe; + + return stmpe_set_altfunc(stmpe, 1 << offset, STMPE_BLOCK_GPIO); +} + static struct gpio_chip template_chip = { .label = "stmpe", .owner = THIS_MODULE, @@ -106,6 +114,7 @@ static struct gpio_chip template_chip = { .direction_output = stmpe_gpio_direction_output, .set = stmpe_gpio_set, .to_irq = stmpe_gpio_to_irq, + .request = stmpe_gpio_request, .can_sleep = 1, }; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |