From 67d729adc0e76e21c82a2c59853f25f5f784ca79 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Mon, 28 Jan 2008 13:01:19 +0100 Subject: [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 Signed-off-by: Russell King diff --git a/arch/arm/mach-s3c2412/Makefile b/arch/arm/mach-s3c2412/Makefile index 7b782c7..267f334 100644 --- a/arch/arm/mach-s3c2412/Makefile +++ b/arch/arm/mach-s3c2412/Makefile @@ -12,6 +12,7 @@ obj- := obj-$(CONFIG_CPU_S3C2412) += s3c2412.o obj-$(CONFIG_CPU_S3C2412) += irq.o obj-$(CONFIG_CPU_S3C2412) += clock.o +obj-$(CONFIG_CPU_S3C2412) += gpio.o obj-$(CONFIG_S3C2412_DMA) += dma.o obj-$(CONFIG_S3C2412_PM) += pm.o sleep.o 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 + * + * 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 +#include +#include +#include + +#include +#include + +#include + +#include + +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); diff --git a/include/asm-arm/arch-s3c2410/hardware.h b/include/asm-arm/arch-s3c2410/hardware.h index 6dadf58..faeaba5 100644 --- a/include/asm-arm/arch-s3c2410/hardware.h +++ b/include/asm-arm/arch-s3c2410/hardware.h @@ -99,6 +99,11 @@ extern int s3c2440_set_dsc(unsigned int pin, unsigned int value); #endif /* CONFIG_CPU_S3C2440 */ +#ifdef CONFIG_CPU_S3C2412 + +extern int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state); + +#endif /* CONFIG_CPU_S3C2412 */ #endif /* __ASSEMBLY__ */ diff --git a/include/asm-arm/arch-s3c2410/regs-gpio.h b/include/asm-arm/arch-s3c2410/regs-gpio.h index 1f089fb..0ad75d7 100644 --- a/include/asm-arm/arch-s3c2410/regs-gpio.h +++ b/include/asm-arm/arch-s3c2410/regs-gpio.h @@ -1138,6 +1138,11 @@ #define S3C2412_GPHSLPCON S3C2410_GPIOREG(0x7C) /* definitions for each pin bit */ +#define S3C2412_GPIO_SLPCON_LOW ( 0x00 ) +#define S3C2412_GPIO_SLPCON_HIGH ( 0x01 ) +#define S3C2412_GPIO_SLPCON_IN ( 0x02 ) +#define S3C2412_GPIO_SLPCON_PULL ( 0x03 ) + #define S3C2412_SLPCON_LOW(x) ( 0x00 << ((x) * 2)) #define S3C2412_SLPCON_HIGH(x) ( 0x01 << ((x) * 2)) #define S3C2412_SLPCON_IN(x) ( 0x02 << ((x) * 2)) -- cgit v0.10.2