diff options
| -rw-r--r-- | arch/arm/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-mv78xx0/include/mach/gpio.h | 40 | ||||
| -rw-r--r-- | arch/arm/mach-mv78xx0/include/mach/irqs.h | 4 | ||||
| -rw-r--r-- | arch/arm/mach-mv78xx0/include/mach/mv78xx0.h | 3 | ||||
| -rw-r--r-- | arch/arm/mach-mv78xx0/irq.c | 29 |
5 files changed, 71 insertions, 6 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index d840a64c6ce..1f08b29b66b 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -429,6 +429,7 @@ config ARCH_MV78XX0 bool "Marvell MV78xx0" select CPU_FEROCEON select PCI + select GENERIC_GPIO select GENERIC_TIME select GENERIC_CLOCKEVENTS select PLAT_ORION diff --git a/arch/arm/mach-mv78xx0/include/mach/gpio.h b/arch/arm/mach-mv78xx0/include/mach/gpio.h new file mode 100644 index 00000000000..d9d1535ea10 --- /dev/null +++ b/arch/arm/mach-mv78xx0/include/mach/gpio.h @@ -0,0 +1,40 @@ +/* + * arch/asm-arm/mach-mv78xx0/include/mach/gpio.h + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#ifndef __ASM_ARCH_GPIO_H +#define __ASM_ARCH_GPIO_H + +#include <mach/irqs.h> +#include <plat/gpio.h> +#include <asm-generic/gpio.h> /* cansleep wrappers */ + +extern int mv78xx0_core_index(void); + +#define GPIO_MAX 32 +#define GPIO_OUT(pin) (DEV_BUS_VIRT_BASE + 0x0100) +#define GPIO_IO_CONF(pin) (DEV_BUS_VIRT_BASE + 0x0104) +#define GPIO_BLINK_EN(pin) (DEV_BUS_VIRT_BASE + 0x0108) +#define GPIO_IN_POL(pin) (DEV_BUS_VIRT_BASE + 0x010c) +#define GPIO_DATA_IN(pin) (DEV_BUS_VIRT_BASE + 0x0110) +#define GPIO_EDGE_CAUSE(pin) (DEV_BUS_VIRT_BASE + 0x0114) +#define GPIO_MASK_OFF (mv78xx0_core_index() ? 0x18 : 0) +#define GPIO_EDGE_MASK(pin) (DEV_BUS_VIRT_BASE + 0x0118 + GPIO_MASK_OFF) +#define GPIO_LEVEL_MASK(pin) (DEV_BUS_VIRT_BASE + 0x011c + GPIO_MASK_OFF) + +static inline int gpio_to_irq(int pin) +{ + return pin + IRQ_MV78XX0_GPIO_START; +} + +static inline int irq_to_gpio(int irq) +{ + return irq - IRQ_MV78XX0_GPIO_START; +} + + +#endif diff --git a/arch/arm/mach-mv78xx0/include/mach/irqs.h b/arch/arm/mach-mv78xx0/include/mach/irqs.h index bebc330281e..fa1d422196c 100644 --- a/arch/arm/mach-mv78xx0/include/mach/irqs.h +++ b/arch/arm/mach-mv78xx0/include/mach/irqs.h @@ -11,8 +11,6 @@ #ifndef __ASM_ARCH_IRQS_H #define __ASM_ARCH_IRQS_H -#include "mv78xx0.h" /* need GPIO_MAX */ - /* * MV78xx0 Low Interrupt Controller */ @@ -88,7 +86,7 @@ * MV78XX0 General Purpose Pins */ #define IRQ_MV78XX0_GPIO_START 96 -#define NR_GPIO_IRQS GPIO_MAX +#define NR_GPIO_IRQS 32 #define NR_IRQS (IRQ_MV78XX0_GPIO_START + NR_GPIO_IRQS) diff --git a/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h b/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h index ee9c5593ee9..e930ea5330a 100644 --- a/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h +++ b/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h @@ -122,7 +122,4 @@ #define SATA_PHYS_BASE (MV78XX0_REGS_PHYS_BASE | 0xa0000) -#define GPIO_MAX 32 - - #endif diff --git a/arch/arm/mach-mv78xx0/irq.c b/arch/arm/mach-mv78xx0/irq.c index 503e5d195ae..e273418797b 100644 --- a/arch/arm/mach-mv78xx0/irq.c +++ b/arch/arm/mach-mv78xx0/irq.c @@ -11,13 +11,42 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/pci.h> +#include <linux/irq.h> +#include <asm/gpio.h> #include <mach/mv78xx0.h> #include <plat/irq.h> #include "common.h" +static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc) +{ + BUG_ON(irq < IRQ_MV78XX0_GPIO_0_7 || irq > IRQ_MV78XX0_GPIO_24_31); + + orion_gpio_irq_handler((irq - IRQ_MV78XX0_GPIO_0_7) << 3); +} + void __init mv78xx0_init_irq(void) { + int i; + orion_irq_init(0, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_LOW_OFF)); orion_irq_init(32, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF)); orion_irq_init(64, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_ERR_OFF)); + + /* + * Mask and clear GPIO IRQ interrupts. + */ + writel(0, GPIO_LEVEL_MASK(0)); + writel(0, GPIO_EDGE_MASK(0)); + writel(0, GPIO_EDGE_CAUSE(0)); + + for (i = IRQ_MV78XX0_GPIO_START; i < NR_IRQS; i++) { + set_irq_chip(i, &orion_gpio_irq_level_chip); + set_irq_handler(i, handle_level_irq); + irq_desc[i].status |= IRQ_LEVEL; + set_irq_flags(i, IRQF_VALID); + } + set_irq_chained_handler(IRQ_MV78XX0_GPIO_0_7, gpio_irq_handler); + set_irq_chained_handler(IRQ_MV78XX0_GPIO_8_15, gpio_irq_handler); + set_irq_chained_handler(IRQ_MV78XX0_GPIO_16_23, gpio_irq_handler); + set_irq_chained_handler(IRQ_MV78XX0_GPIO_24_31, gpio_irq_handler); } |