diff options
author | Ben Dooks <ben-linux@fluff.org> | 2008-01-28 12:01:19 (GMT) |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-01-28 13:20:50 (GMT) |
commit | 67d729adc0e76e21c82a2c59853f25f5f784ca79 (patch) | |
tree | 4459961c8babc67a29e83c123cffc4bb077cc3e8 /arch/arm/mach-s3c2412/gpio.c | |
parent | bdbea34ddd2e52dc73f03e7ef7197d4c0da400d6 (diff) | |
download | linux-fsl-qoriq-67d729adc0e76e21c82a2c59853f25f5f784ca79.tar.xz |
[ARM] 4779/1: S3C2412: Add s3c2412_gpio_set_sleepcfg() call
Add s3c2412_gpio_set_sleepcfg() to allow the setting of the sleep
configuration of the GPIO blocks.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-s3c2412/gpio.c')
-rw-r--r-- | arch/arm/mach-s3c2412/gpio.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2412/gpio.c b/arch/arm/mach-s3c2412/gpio.c new file mode 100644 index 0000000..8e55c3a --- /dev/null +++ b/arch/arm/mach-s3c2412/gpio.c @@ -0,0 +1,60 @@ +/* linux/arch/arm/mach-s3c2412/gpio.c + * + * Copyright (c) 2007 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * http://armlinux.simtec.co.uk/. + * + * S3C2412/S3C2413 specific GPIO support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/module.h> +#include <linux/interrupt.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> + +#include <asm/arch/regs-gpio.h> + +#include <asm/hardware.h> + +int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state) +{ + void __iomem *base = S3C24XX_GPIO_BASE(pin); + unsigned long offs = S3C2410_GPIO_OFFSET(pin); + unsigned long flags; + unsigned long slpcon; + + offs *= 2; + + if (pin < S3C2410_GPIO_BANKB) + return -EINVAL; + + if (pin >= S3C2410_GPIO_BANKF && + pin <= S3C2410_GPIO_BANKG) + return -EINVAL; + + if (pin > (S3C2410_GPIO_BANKH + 32)) + return -EINVAL; + + local_irq_save(flags); + + slpcon = __raw_readl(base + 0x0C); + + slpcon &= ~(3 << offs); + slpcon |= state << offs; + + __raw_writel(slpcon, base + 0x0C); + + local_irq_restore(flags); + + return 0; +} + +EXPORT_SYMBOL(s3c2412_gpio_set_sleepcfg); |