[PATCH 1/4] ARM: at91: gpio: implement request
From: Nicolas Ferre <hidden>
Date: 2012-08-07 12:34:54
On 07/15/2012 03:40 PM, Jean-Christophe PLAGNIOL-VILLARD :
confire the pin as pio when requested Cc: Nicolas Ferre <redacted>
Acked-by: Nicolas Ferre <redacted>
quoted hunk ↗ jump to hunk
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <redacted> --- arch/arm/mach-at91/gpio.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c index 325837a..994ed02 100644 --- a/arch/arm/mach-at91/gpio.c +++ b/arch/arm/mach-at91/gpio.c@@ -44,6 +44,7 @@ struct at91_gpio_chip { #define to_at91_gpio_chip(c) container_of(c, struct at91_gpio_chip, chip) +static int at91_gpiolib_request(struct gpio_chip *chip, unsigned offset); static void at91_gpiolib_dbg_show(struct seq_file *s, struct gpio_chip *chip); static void at91_gpiolib_set(struct gpio_chip *chip, unsigned offset, int val); static int at91_gpiolib_get(struct gpio_chip *chip, unsigned offset);@@ -57,6 +58,7 @@ static int at91_gpiolib_to_irq(struct gpio_chip *chip, unsigned offset); { \ .chip = { \ .label = name, \ + .request = at91_gpiolib_request, \ .direction_input = at91_gpiolib_direction_input, \ .direction_output = at91_gpiolib_direction_output, \ .get = at91_gpiolib_get, \@@ -861,6 +863,18 @@ void __init at91_gpio_irq_setup(void) } /* gpiolib support */ + + +static int at91_gpiolib_request(struct gpio_chip *chip, unsigned offset) +{ + struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip); + void __iomem *pio = at91_gpio->regbase; + unsigned mask = 1 << offset; + + __raw_writel(mask, pio + PIO_PER); + return 0; +} + static int at91_gpiolib_direction_input(struct gpio_chip *chip, unsigned offset) {
-- Nicolas Ferre