From mboxrd@z Thu Jan 1 00:00:00 1970 From: plagnioj@jcrosoft.com (Jean-Christophe PLAGNIOL-VILLARD) Date: Sun, 15 Jul 2012 15:40:34 +0200 Subject: [PATCH 1/4] ARM: at91: gpio: implement request In-Reply-To: <20120715131618.GF4450@game.jcrosoft.org> References: <20120715131618.GF4450@game.jcrosoft.org> Message-ID: <1342359637-15325-1-git-send-email-plagnioj@jcrosoft.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org confire the pin as pio when requested Cc: Nicolas Ferre Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD --- 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) { -- 1.7.10