diff options
| author | Ryan Mallon <ryan@bluewatersys.com> | 2009-06-24 23:15:23 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-06-27 11:03:47 +0100 |
| commit | 7c6425a0404399ba78852ef4108007ecf51ef3dc (patch) | |
| tree | 59579bebb88e746307df21361674f8ce218663a2 /arch/arm/mach-at91/gpio.c | |
| parent | 226ddb9833a3c2f1087bfac70659d8e318d3c31f (diff) | |
| download | op-kernel-dev-7c6425a0404399ba78852ef4108007ecf51ef3dc.zip op-kernel-dev-7c6425a0404399ba78852ef4108007ecf51ef3dc.tar.gz | |
[ARM] 5566/1: Remove at91_gpiolib_request
Remove at91_gpiolib_request. It returns -EPERM if a request pin is not
in GPIO mode, however we want to be able to gpio_request alternative
function pins to reserve them, and in some cases we need to be able to
use the gpiolib functions on alternative function pins.
Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-at91/gpio.c')
| -rw-r--r-- | arch/arm/mach-at91/gpio.c | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c index f2236f0..ae4772e 100644 --- a/arch/arm/mach-at91/gpio.c +++ b/arch/arm/mach-at91/gpio.c @@ -44,13 +44,11 @@ static int at91_gpiolib_direction_output(struct gpio_chip *chip, unsigned offset, int val); static int at91_gpiolib_direction_input(struct gpio_chip *chip, unsigned offset); -static int at91_gpiolib_request(struct gpio_chip *chip, unsigned offset); #define AT91_GPIO_CHIP(name, base_gpio, nr_gpio) \ { \ .chip = { \ .label = name, \ - .request = at91_gpiolib_request, \ .direction_input = at91_gpiolib_direction_input, \ .direction_output = at91_gpiolib_direction_output, \ .get = at91_gpiolib_get, \ @@ -588,19 +586,6 @@ static void at91_gpiolib_set(struct gpio_chip *chip, unsigned offset, int val) __raw_writel(mask, pio + (val ? PIO_SODR : PIO_CODR)); } -static int at91_gpiolib_request(struct gpio_chip *chip, unsigned offset) -{ - unsigned pin = chip->base + offset; - void __iomem *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); - - /* Cannot request GPIOs that are in alternate function mode */ - if (!(__raw_readl(pio + PIO_PSR) & mask)) - return -EPERM; - - return 0; -} - static void at91_gpiolib_dbg_show(struct seq_file *s, struct gpio_chip *chip) { int i; |
