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[ARM] pxa: add GPIO support for pxa168

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Signed-off-by: Eric Miao <eric.miao@marvell.com>
This commit is contained in:
Eric Miao 2009-01-20 14:38:24 +08:00
parent 40305a583a
commit e2bb6650ef
3 changed files with 57 additions and 0 deletions
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2
arch/arm/Kconfig
View file

@ -490,6 +490,8 @@ config ARCH_PXA
config ARCH_MMP
bool "Marvell PXA168"
depends on MMU
select GENERIC_GPIO
select ARCH_REQUIRE_GPIOLIB
select HAVE_CLK
select COMMON_CLKDEV
select GENERIC_TIME

36
arch/arm/mach-mmp/include/mach/gpio.h Normal file
View file

@ -0,0 +1,36 @@
#ifndef __ASM_MACH_GPIO_H
#define __ASM_MACH_GPIO_H
#include <mach/addr-map.h>
#include <mach/irqs.h>
#include <asm-generic/gpio.h>
#define GPIO_REGS_VIRT (APB_VIRT_BASE + 0x19000)
#define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2))
#define GPIO_REG(x) (*((volatile u32 *)(GPIO_REGS_VIRT + (x))))
#define NR_BUILTIN_GPIO (128)
#define gpio_to_bank(gpio) ((gpio) >> 5)
#define gpio_to_irq(gpio) (IRQ_GPIO_START + (gpio))
#define irq_to_gpio(irq) ((irq) - IRQ_GPIO_START)
#define __gpio_is_inverted(gpio) (0)
#define __gpio_is_occupied(gpio) (0)
/* NOTE: these macros are defined here to make optimization of
* gpio_{get,set}_value() to work when 'gpio' is a constant.
* Usage of these macros otherwise is no longer recommended,
* use generic GPIO API whenever possible.
*/
#define GPIO_bit(gpio) (1 << ((gpio) & 0x1f))
#define GPLR(x) GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x00)
#define GPDR(x) GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x0c)
#define GPSR(x) GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x18)
#define GPCR(x) GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x24)
#include <plat/gpio.h>
#endif /* __ASM_MACH_GPIO_H */

19
arch/arm/mach-mmp/pxa168.c
View file

@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <asm/mach/time.h>
@ -19,15 +20,33 @@
#include <mach/cputype.h>
#include <mach/regs-apbc.h>
#include <mach/irqs.h>
#include <mach/gpio.h>
#include <mach/dma.h>
#include <mach/devices.h>
#include "common.h"
#include "clock.h"
#define APMASK(i) (GPIO_REGS_VIRT + BANK_OFF(i) + 0x09c)
static void __init pxa168_init_gpio(void)
{
int i;
/* enable GPIO clock */
__raw_writel(APBC_APBCLK | APBC_FNCLK, APBC_PXA168_GPIO);
/* unmask GPIO edge detection for all 4 banks - APMASKx */
for (i = 0; i < 4; i++)
__raw_writel(0xffffffff, APMASK(i));
pxa_init_gpio(IRQ_PXA168_GPIOX, 0, 127, NULL);
}
void __init pxa168_init_irq(void)
{
icu_init_irq();
pxa168_init_gpio();
}
/* APB peripheral clocks */