diff options
author | Lucas Correia Villa Real <lucasvr@gobolinux.org> | 2006-02-02 00:24:23 +0300 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-02-02 00:24:23 +0300 |
commit | 0ca5bc3de715f6e031d44ffecdd2d127891eccf5 (patch) | |
tree | ec963c52b7c60d1cd6862798f5bdfce87387082b /arch | |
parent | 7610dfa3723e87705964b29db9775620d96bf618 (diff) | |
download | linux-0ca5bc3de715f6e031d44ffecdd2d127891eccf5.tar.xz |
[ARM] 3284/1: S3C2400 - adds support to GPIO
Patch from Lucas Correia Villa Real
This patch adds support to GPIO on the S3C2400, which is going to
be used by the GP32 machine and the SMDK2400 development board.
Signed-off-by: Lucas Correia Villa Real <lucasvr@gobolinux.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/mach-s3c2410/Makefile | 5 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/gpio.c | 72 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/s3c2400-gpio.c | 45 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/s3c2410-gpio.c | 93 | ||||
-rw-r--r-- | arch/arm/mach-s3c2410/sleep.S | 2 |
5 files changed, 152 insertions, 65 deletions
diff --git a/arch/arm/mach-s3c2410/Makefile b/arch/arm/mach-s3c2410/Makefile index b4f1e051c768..1217bf00309c 100644 --- a/arch/arm/mach-s3c2410/Makefile +++ b/arch/arm/mach-s3c2410/Makefile @@ -10,9 +10,13 @@ obj-m := obj-n := obj- := +# S3C2400 support files +obj-$(CONFIG_CPU_S3C2400) += s3c2400-gpio.o + # S3C2410 support files obj-$(CONFIG_CPU_S3C2410) += s3c2410.o +obj-$(CONFIG_CPU_S3C2410) += s3c2410-gpio.o obj-$(CONFIG_S3C2410_DMA) += dma.o # Power Management support @@ -25,6 +29,7 @@ obj-$(CONFIG_PM_SIMTEC) += pm-simtec.o obj-$(CONFIG_CPU_S3C2440) += s3c2440.o s3c2440-dsc.o obj-$(CONFIG_CPU_S3C2440) += s3c2440-irq.o obj-$(CONFIG_CPU_S3C2440) += s3c2440-clock.o +obj-$(CONFIG_CPU_S3C2440) += s3c2410-gpio.o # bast extras diff --git a/arch/arm/mach-s3c2410/gpio.c b/arch/arm/mach-s3c2410/gpio.c index 23ea3d5fa09c..cd39e8684584 100644 --- a/arch/arm/mach-s3c2410/gpio.c +++ b/arch/arm/mach-s3c2410/gpio.c @@ -31,6 +31,7 @@ * 05-Nov-2004 BJD EXPORT_SYMBOL() added for all code * 13-Mar-2005 BJD Updates for __iomem * 26-Oct-2005 BJD Added generic configuration types + * 15-Jan-2006 LCVR Added support for the S3C2400 */ @@ -48,7 +49,7 @@ void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function) { - void __iomem *base = S3C2410_GPIO_BASE(pin); + void __iomem *base = S3C24XX_GPIO_BASE(pin); unsigned long mask; unsigned long con; unsigned long flags; @@ -95,7 +96,7 @@ EXPORT_SYMBOL(s3c2410_gpio_cfgpin); unsigned int s3c2410_gpio_getcfg(unsigned int pin) { - void __iomem *base = S3C2410_GPIO_BASE(pin); + void __iomem *base = S3C24XX_GPIO_BASE(pin); unsigned long mask; if (pin < S3C2410_GPIO_BANKB) { @@ -111,7 +112,7 @@ EXPORT_SYMBOL(s3c2410_gpio_getcfg); void s3c2410_gpio_pullup(unsigned int pin, unsigned int to) { - void __iomem *base = S3C2410_GPIO_BASE(pin); + void __iomem *base = S3C24XX_GPIO_BASE(pin); unsigned long offs = S3C2410_GPIO_OFFSET(pin); unsigned long flags; unsigned long up; @@ -133,7 +134,7 @@ EXPORT_SYMBOL(s3c2410_gpio_pullup); void s3c2410_gpio_setpin(unsigned int pin, unsigned int to) { - void __iomem *base = S3C2410_GPIO_BASE(pin); + void __iomem *base = S3C24XX_GPIO_BASE(pin); unsigned long offs = S3C2410_GPIO_OFFSET(pin); unsigned long flags; unsigned long dat; @@ -152,7 +153,7 @@ EXPORT_SYMBOL(s3c2410_gpio_setpin); unsigned int s3c2410_gpio_getpin(unsigned int pin) { - void __iomem *base = S3C2410_GPIO_BASE(pin); + void __iomem *base = S3C24XX_GPIO_BASE(pin); unsigned long offs = S3C2410_GPIO_OFFSET(pin); return __raw_readl(base + 0x04) & (1<< offs); @@ -166,70 +167,13 @@ unsigned int s3c2410_modify_misccr(unsigned int clear, unsigned int change) unsigned long misccr; local_irq_save(flags); - misccr = __raw_readl(S3C2410_MISCCR); + misccr = __raw_readl(S3C24XX_MISCCR); misccr &= ~clear; misccr ^= change; - __raw_writel(misccr, S3C2410_MISCCR); + __raw_writel(misccr, S3C24XX_MISCCR); local_irq_restore(flags); return misccr; } EXPORT_SYMBOL(s3c2410_modify_misccr); - -int s3c2410_gpio_getirq(unsigned int pin) -{ - if (pin < S3C2410_GPF0 || pin > S3C2410_GPG15_EINT23) - return -1; /* not valid interrupts */ - - if (pin < S3C2410_GPG0 && pin > S3C2410_GPF7) - return -1; /* not valid pin */ - - if (pin < S3C2410_GPF4) - return (pin - S3C2410_GPF0) + IRQ_EINT0; - - if (pin < S3C2410_GPG0) - return (pin - S3C2410_GPF4) + IRQ_EINT4; - - return (pin - S3C2410_GPG0) + IRQ_EINT8; -} - -EXPORT_SYMBOL(s3c2410_gpio_getirq); - -int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on, - unsigned int config) -{ - void __iomem *reg = S3C2410_EINFLT0; - unsigned long flags; - unsigned long val; - - if (pin < S3C2410_GPG8 || pin > S3C2410_GPG15) - return -1; - - config &= 0xff; - - pin -= S3C2410_GPG8_EINT16; - reg += pin & ~3; - - local_irq_save(flags); - - /* update filter width and clock source */ - - val = __raw_readl(reg); - val &= ~(0xff << ((pin & 3) * 8)); - val |= config << ((pin & 3) * 8); - __raw_writel(val, reg); - - /* update filter enable */ - - val = __raw_readl(S3C2410_EXTINT2); - val &= ~(1 << ((pin * 4) + 3)); - val |= on << ((pin * 4) + 3); - __raw_writel(val, S3C2410_EXTINT2); - - local_irq_restore(flags); - - return 0; -} - -EXPORT_SYMBOL(s3c2410_gpio_irqfilter); diff --git a/arch/arm/mach-s3c2410/s3c2400-gpio.c b/arch/arm/mach-s3c2410/s3c2400-gpio.c new file mode 100644 index 000000000000..5127f39fa9bf --- /dev/null +++ b/arch/arm/mach-s3c2410/s3c2400-gpio.c @@ -0,0 +1,45 @@ +/* linux/arch/arm/mach-s3c2410/gpio.c + * + * Copyright (c) 2006 Lucas Correia Villa Real <lucasvr@gobolinux.org> + * + * S3C2400 GPIO support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Changelog + * 15-Jan-2006 LCVR Splitted from gpio.c, adding support for the S3C2400 + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> + +#include <asm/hardware.h> +#include <asm/irq.h> +#include <asm/io.h> + +#include <asm/arch/regs-gpio.h> + +int s3c2400_gpio_getirq(unsigned int pin) +{ + if (pin < S3C2410_GPE0 || pin > S3C2400_GPE7_EINT7) + return -1; /* not valid interrupts */ + + return (pin - S3C2410_GPE0) + IRQ_EINT0; +} + +EXPORT_SYMBOL(s3c2400_gpio_getirq); diff --git a/arch/arm/mach-s3c2410/s3c2410-gpio.c b/arch/arm/mach-s3c2410/s3c2410-gpio.c new file mode 100644 index 000000000000..d5e1caea1d23 --- /dev/null +++ b/arch/arm/mach-s3c2410/s3c2410-gpio.c @@ -0,0 +1,93 @@ +/* linux/arch/arm/mach-s3c2410/gpio.c + * + * Copyright (c) 2004-2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2410 GPIO support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Changelog + * 15-Jan-2006 LCVR Splitted from gpio.c + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> + +#include <asm/hardware.h> +#include <asm/irq.h> +#include <asm/io.h> + +#include <asm/arch/regs-gpio.h> + +int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on, + unsigned int config) +{ + void __iomem *reg = S3C2410_EINFLT0; + unsigned long flags; + unsigned long val; + + if (pin < S3C2410_GPG8 || pin > S3C2410_GPG15) + return -1; + + config &= 0xff; + + pin -= S3C2410_GPG8_EINT16; + reg += pin & ~3; + + local_irq_save(flags); + + /* update filter width and clock source */ + + val = __raw_readl(reg); + val &= ~(0xff << ((pin & 3) * 8)); + val |= config << ((pin & 3) * 8); + __raw_writel(val, reg); + + /* update filter enable */ + + val = __raw_readl(S3C2410_EXTINT2); + val &= ~(1 << ((pin * 4) + 3)); + val |= on << ((pin * 4) + 3); + __raw_writel(val, S3C2410_EXTINT2); + + local_irq_restore(flags); + + return 0; +} + +EXPORT_SYMBOL(s3c2410_gpio_irqfilter); + +int s3c2410_gpio_getirq(unsigned int pin) +{ + if (pin < S3C2410_GPF0 || pin > S3C2410_GPG15_EINT23) + return -1; /* not valid interrupts */ + + if (pin < S3C2410_GPG0 && pin > S3C2410_GPF7) + return -1; /* not valid pin */ + + if (pin < S3C2410_GPF4) + return (pin - S3C2410_GPF0) + IRQ_EINT0; + + if (pin < S3C2410_GPG0) + return (pin - S3C2410_GPF4) + IRQ_EINT4; + + return (pin - S3C2410_GPG0) + IRQ_EINT8; +} + +EXPORT_SYMBOL(s3c2410_gpio_getirq); diff --git a/arch/arm/mach-s3c2410/sleep.S b/arch/arm/mach-s3c2410/sleep.S index e9a055b779b7..832fb86a03b4 100644 --- a/arch/arm/mach-s3c2410/sleep.S +++ b/arch/arm/mach-s3c2410/sleep.S @@ -72,7 +72,7 @@ ENTRY(s3c2410_cpu_suspend) @@ prepare cpu to sleep ldr r4, =S3C2410_REFRESH - ldr r5, =S3C2410_MISCCR + ldr r5, =S3C24XX_MISCCR ldr r6, =S3C2410_CLKCON ldr r7, [ r4 ] @ get REFRESH (and ensure in TLB) ldr r8, [ r5 ] @ get MISCCR (and ensure in TLB) |