diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-dove/include/mach/dove.h | 3 | ||||
| -rw-r--r-- | arch/arm/mach-dove/include/mach/gpio.h | 42 | ||||
| -rw-r--r-- | arch/arm/mach-dove/irq.c | 30 | ||||
| -rw-r--r-- | arch/arm/mach-kirkwood/include/mach/gpio.h | 29 | ||||
| -rw-r--r-- | arch/arm/mach-kirkwood/include/mach/kirkwood.h | 2 | ||||
| -rw-r--r-- | arch/arm/mach-kirkwood/irq.c | 22 | ||||
| -rw-r--r-- | arch/arm/mach-kirkwood/mpp.c | 3 | ||||
| -rw-r--r-- | arch/arm/mach-mv78xx0/include/mach/gpio.h | 31 | ||||
| -rw-r--r-- | arch/arm/mach-mv78xx0/include/mach/mv78xx0.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-mv78xx0/irq.c | 22 | ||||
| -rw-r--r-- | arch/arm/mach-mv78xx0/mpp.c | 3 | ||||
| -rw-r--r-- | arch/arm/mach-orion5x/include/mach/gpio.h | 28 | ||||
| -rw-r--r-- | arch/arm/mach-orion5x/include/mach/orion5x.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-orion5x/irq.c | 19 | ||||
| -rw-r--r-- | arch/arm/mach-orion5x/mpp.c | 3 | ||||
| -rw-r--r-- | arch/arm/plat-orion/gpio.c | 456 | ||||
| -rw-r--r-- | arch/arm/plat-orion/include/plat/gpio.h | 5 |
17 files changed, 348 insertions, 352 deletions
diff --git a/arch/arm/mach-dove/include/mach/dove.h b/arch/arm/mach-dove/include/mach/dove.h index 27b414578f2..e5fcdd3f5bf 100644 --- a/arch/arm/mach-dove/include/mach/dove.h +++ b/arch/arm/mach-dove/include/mach/dove.h @@ -130,7 +130,8 @@ #define DOVE_PMU_MPP_GENERAL_CTRL (DOVE_MPP_VIRT_BASE + 0x10) #define DOVE_RESET_SAMPLE_LO (DOVE_MPP_VIRT_BASE | 0x014) #define DOVE_RESET_SAMPLE_HI (DOVE_MPP_VIRT_BASE | 0x018) -#define DOVE_GPIO_VIRT_BASE (DOVE_SB_REGS_VIRT_BASE | 0xd0400) +#define DOVE_GPIO_LO_VIRT_BASE (DOVE_SB_REGS_VIRT_BASE | 0xd0400) +#define DOVE_GPIO_HI_VIRT_BASE (DOVE_SB_REGS_VIRT_BASE | 0xd0420) #define DOVE_GPIO2_VIRT_BASE (DOVE_SB_REGS_VIRT_BASE | 0xe8400) #define DOVE_MPP_GENERAL_VIRT_BASE (DOVE_SB_REGS_VIRT_BASE | 0xe803c) #define DOVE_AU1_SPDIFO_GPIO_EN (1 << 1) diff --git a/arch/arm/mach-dove/include/mach/gpio.h b/arch/arm/mach-dove/include/mach/gpio.h index 340bb7af529..e7e5101e35a 100644 --- a/arch/arm/mach-dove/include/mach/gpio.h +++ b/arch/arm/mach-dove/include/mach/gpio.h @@ -6,46 +6,4 @@ * warranty of any kind, whether express or implied. */ -#ifndef __ASM_ARCH_GPIO_H -#define __ASM_ARCH_GPIO_H - -#include <asm/errno.h> -#include <mach/irqs.h> #include <plat/gpio.h> -#include <asm-generic/gpio.h> /* cansleep wrappers */ - -#define GPIO_MAX 72 - -#define GPIO_BASE_LO (DOVE_GPIO_VIRT_BASE + 0x00) -#define GPIO_BASE_HI (DOVE_GPIO_VIRT_BASE + 0x20) - -#define GPIO_BASE(pin) ((pin < 32) ? GPIO_BASE_LO : \ - ((pin < 64) ? GPIO_BASE_HI : \ - DOVE_GPIO2_VIRT_BASE)) - -#define GPIO_OUT(pin) (GPIO_BASE(pin) + 0x00) -#define GPIO_IO_CONF(pin) (GPIO_BASE(pin) + 0x04) -#define GPIO_BLINK_EN(pin) (GPIO_BASE(pin) + 0x08) -#define GPIO_IN_POL(pin) (GPIO_BASE(pin) + 0x0c) -#define GPIO_DATA_IN(pin) (GPIO_BASE(pin) + 0x10) -#define GPIO_EDGE_CAUSE(pin) (GPIO_BASE(pin) + 0x14) -#define GPIO_EDGE_MASK(pin) (GPIO_BASE(pin) + 0x18) -#define GPIO_LEVEL_MASK(pin) (GPIO_BASE(pin) + 0x1c) - -static inline int gpio_to_irq(int pin) -{ - if (pin < NR_GPIO_IRQS) - return pin + IRQ_DOVE_GPIO_START; - - return -EINVAL; -} - -static inline int irq_to_gpio(int irq) -{ - if (IRQ_DOVE_GPIO_START < irq && irq < NR_IRQS) - return irq - IRQ_DOVE_GPIO_START; - - return -EINVAL; -} - -#endif diff --git a/arch/arm/mach-dove/irq.c b/arch/arm/mach-dove/irq.c index 9317f0558b5..101707fa2e2 100644 --- a/arch/arm/mach-dove/irq.c +++ b/arch/arm/mach-dove/irq.c @@ -99,11 +99,21 @@ void __init dove_init_irq(void) orion_irq_init(32, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF)); /* - * Mask and clear GPIO IRQ interrupts. + * Initialize gpiolib for GPIOs 0-71. */ - writel(0, GPIO_LEVEL_MASK(0)); - writel(0, GPIO_EDGE_MASK(0)); - writel(0, GPIO_EDGE_CAUSE(0)); + orion_gpio_init(0, 32, DOVE_GPIO_LO_VIRT_BASE, 0, + IRQ_DOVE_GPIO_START); + set_irq_chained_handler(IRQ_DOVE_GPIO_0_7, gpio_irq_handler); + set_irq_chained_handler(IRQ_DOVE_GPIO_8_15, gpio_irq_handler); + set_irq_chained_handler(IRQ_DOVE_GPIO_16_23, gpio_irq_handler); + set_irq_chained_handler(IRQ_DOVE_GPIO_24_31, gpio_irq_handler); + + orion_gpio_init(32, 32, DOVE_GPIO_HI_VIRT_BASE, 0, + IRQ_DOVE_GPIO_START + 32); + set_irq_chained_handler(IRQ_DOVE_HIGH_GPIO, gpio_irq_handler); + + orion_gpio_init(64, 8, DOVE_GPIO2_VIRT_BASE, 0, + IRQ_DOVE_GPIO_START + 64); /* * Mask and clear PMU interrupts @@ -111,18 +121,6 @@ void __init dove_init_irq(void) writel(0, PMU_INTERRUPT_MASK); writel(0, PMU_INTERRUPT_CAUSE); - for (i = IRQ_DOVE_GPIO_START; i < IRQ_DOVE_PMU_START; i++) { - set_irq_chip(i, &orion_gpio_irq_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_DOVE_GPIO_0_7, gpio_irq_handler); - set_irq_chained_handler(IRQ_DOVE_GPIO_8_15, gpio_irq_handler); - set_irq_chained_handler(IRQ_DOVE_GPIO_16_23, gpio_irq_handler); - set_irq_chained_handler(IRQ_DOVE_GPIO_24_31, gpio_irq_handler); - set_irq_chained_handler(IRQ_DOVE_HIGH_GPIO, gpio_irq_handler); - for (i = IRQ_DOVE_PMU_START; i < NR_IRQS; i++) { set_irq_chip(i, &pmu_irq_chip); set_irq_handler(i, handle_level_irq); diff --git a/arch/arm/mach-kirkwood/include/mach/gpio.h b/arch/arm/mach-kirkwood/include/mach/gpio.h index 81b335eb62e..84f340b546c 100644 --- a/arch/arm/mach-kirkwood/include/mach/gpio.h +++ b/arch/arm/mach-kirkwood/include/mach/gpio.h @@ -6,33 +6,4 @@ * 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 */ - -#define GPIO_MAX 50 -#define GPIO_OFF(pin) (((pin) >> 5) ? 0x0140 : 0x0100) -#define GPIO_OUT(pin) (DEV_BUS_VIRT_BASE + GPIO_OFF(pin) + 0x00) -#define GPIO_IO_CONF(pin) (DEV_BUS_VIRT_BASE + GPIO_OFF(pin) + 0x04) -#define GPIO_BLINK_EN(pin) (DEV_BUS_VIRT_BASE + GPIO_OFF(pin) + 0x08) -#define GPIO_IN_POL(pin) (DEV_BUS_VIRT_BASE + GPIO_OFF(pin) + 0x0c) -#define GPIO_DATA_IN(pin) (DEV_BUS_VIRT_BASE + GPIO_OFF(pin) + 0x10) -#define GPIO_EDGE_CAUSE(pin) (DEV_BUS_VIRT_BASE + GPIO_OFF(pin) + 0x14) -#define GPIO_EDGE_MASK(pin) (DEV_BUS_VIRT_BASE + GPIO_OFF(pin) + 0x18) -#define GPIO_LEVEL_MASK(pin) (DEV_BUS_VIRT_BASE + GPIO_OFF(pin) + 0x1c) - -static inline int gpio_to_irq(int pin) -{ - return pin + IRQ_KIRKWOOD_GPIO_START; -} - -static inline int irq_to_gpio(int irq) -{ - return irq - IRQ_KIRKWOOD_GPIO_START; -} - - -#endif diff --git a/arch/arm/mach-kirkwood/include/mach/kirkwood.h b/arch/arm/mach-kirkwood/include/mach/kirkwood.h index 6e924b39891..010bdeb4ac5 100644 --- a/arch/arm/mach-kirkwood/include/mach/kirkwood.h +++ b/arch/arm/mach-kirkwood/include/mach/kirkwood.h @@ -69,6 +69,8 @@ #define DEV_BUS_VIRT_BASE (KIRKWOOD_REGS_VIRT_BASE | 0x10000) #define SAMPLE_AT_RESET (DEV_BUS_VIRT_BASE | 0x0030) #define DEVICE_ID (DEV_BUS_VIRT_BASE | 0x0034) +#define GPIO_LOW_VIRT_BASE (DEV_BUS_VIRT_BASE | 0x0100) +#define GPIO_HIGH_VIRT_BASE (DEV_BUS_VIRT_BASE | 0x0140) #define RTC_PHYS_BASE (DEV_BUS_PHYS_BASE | 0x0300) #define SPI_PHYS_BASE (DEV_BUS_PHYS_BASE | 0x0600) #define I2C_PHYS_BASE (DEV_BUS_PHYS_BASE | 0x1000) diff --git a/arch/arm/mach-kirkwood/irq.c b/arch/arm/mach-kirkwood/irq.c index 28020abf49e..cbdb5863d13 100644 --- a/arch/arm/mach-kirkwood/irq.c +++ b/arch/arm/mach-kirkwood/irq.c @@ -27,31 +27,21 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc) void __init kirkwood_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)); /* - * Mask and clear GPIO IRQ interrupts. + * Initialize gpiolib for GPIOs 0-49. */ - writel(0, GPIO_LEVEL_MASK(0)); - writel(0, GPIO_EDGE_MASK(0)); - writel(0, GPIO_EDGE_CAUSE(0)); - writel(0, GPIO_LEVEL_MASK(32)); - writel(0, GPIO_EDGE_MASK(32)); - writel(0, GPIO_EDGE_CAUSE(32)); - - for (i = IRQ_KIRKWOOD_GPIO_START; i < NR_IRQS; i++) { - set_irq_chip(i, &orion_gpio_irq_chip); - set_irq_handler(i, handle_level_irq); - irq_desc[i].status |= IRQ_LEVEL; - set_irq_flags(i, IRQF_VALID); - } + orion_gpio_init(0, 32, GPIO_LOW_VIRT_BASE, 0, + IRQ_KIRKWOOD_GPIO_START); set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_LOW_0_7, gpio_irq_handler); set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_LOW_8_15, gpio_irq_handler); set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_LOW_16_23, gpio_irq_handler); set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_LOW_24_31, gpio_irq_handler); + + orion_gpio_init(32, 18, GPIO_HIGH_VIRT_BASE, 0, + IRQ_KIRKWOOD_GPIO_START + 32); set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_HIGH_0_7, gpio_irq_handler); set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_HIGH_8_15, gpio_irq_handler); set_irq_chained_handler(IRQ_KIRKWOOD_GPIO_HIGH_16_23, gpio_irq_handler); diff --git a/arch/arm/mach-kirkwood/mpp.c b/arch/arm/mach-kirkwood/mpp.c index 27901f702fe..7ce20184806 100644 --- a/arch/arm/mach-kirkwood/mpp.c +++ b/arch/arm/mach-kirkwood/mpp.c @@ -49,9 +49,6 @@ void __init kirkwood_mpp_conf(unsigned int *mpp_list) if (!variant_mask) return; - /* Initialize gpiolib. */ - orion_gpio_init(); - printk(KERN_DEBUG "initial MPP regs:"); for (i = 0; i < MPP_NR_REGS; i++) { mpp_ctrl[i] = readl(MPP_CTRL(i)); diff --git a/arch/arm/mach-mv78xx0/include/mach/gpio.h b/arch/arm/mach-mv78xx0/include/mach/gpio.h index d9d1535ea10..77e1b843e76 100644 --- a/arch/arm/mach-mv78xx0/include/mach/gpio.h +++ b/arch/arm/mach-mv78xx0/include/mach/gpio.h @@ -6,35 +6,4 @@ * 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/mv78xx0.h b/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h index 3eff39921d4..3674497162e 100644 --- a/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h +++ b/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h @@ -71,6 +71,7 @@ #define DEV_BUS_VIRT_BASE (MV78XX0_REGS_VIRT_BASE | 0x10000) #define SAMPLE_AT_RESET_LOW (DEV_BUS_VIRT_BASE | 0x0030) #define SAMPLE_AT_RESET_HIGH (DEV_BUS_VIRT_BASE | 0x0034) +#define GPIO_VIRT_BASE (DEV_BUS_VIRT_BASE | 0x0100) #define I2C_0_PHYS_BASE (DEV_BUS_PHYS_BASE | 0x1000) #define I2C_1_PHYS_BASE (DEV_BUS_PHYS_BASE | 0x1100) #define UART0_PHYS_BASE (DEV_BUS_PHYS_BASE | 0x2000) diff --git a/arch/arm/mach-mv78xx0/irq.c b/arch/arm/mach-mv78xx0/irq.c index 22b4ff893b3..08da497c39c 100644 --- a/arch/arm/mach-mv78xx0/irq.c +++ b/arch/arm/mach-mv78xx0/irq.c @@ -26,28 +26,18 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc) void __init mv78xx0_init_irq(void) { - int i; - - /* Initialize gpiolib. */ - orion_gpio_init(); - 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. + * Initialize gpiolib for GPIOs 0-31. (The GPIO interrupt mask + * registers for core #1 are at an offset of 0x18 from those of + * core #0.) */ - 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_chip); - set_irq_handler(i, handle_level_irq); - irq_desc[i].status |= IRQ_LEVEL; - set_irq_flags(i, IRQF_VALID); - } + orion_gpio_init(0, 32, GPIO_VIRT_BASE, + mv78xx0_core_index() ? 0x18 : 0, + IRQ_MV78XX0_GPIO_START); 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); diff --git a/arch/arm/mach-mv78xx0/mpp.c b/arch/arm/mach-mv78xx0/mpp.c index 84db2dfc475..65b72c454cb 100644 --- a/arch/arm/mach-mv78xx0/mpp.c +++ b/arch/arm/mach-mv78xx0/mpp.c @@ -44,9 +44,6 @@ void __init mv78xx0_mpp_conf(unsigned int *mpp_list) if (!variant_mask) return; - /* Initialize gpiolib. */ - orion_gpio_init(); - printk(KERN_DEBUG "initial MPP regs:"); for (i = 0; i < MPP_NR_REGS; i++) { mpp_ctrl[i] = readl(MPP_CTRL(i)); diff --git a/arch/arm/mach-orion5x/include/mach/gpio.h b/arch/arm/mach-orion5x/include/mach/gpio.h index d8182e87ac1..a1d0b78decb 100644 --- a/arch/arm/mach-orion5x/include/mach/gpio.h +++ b/arch/arm/mach-orion5x/include/mach/gpio.h @@ -6,32 +6,4 @@ * 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 */ - -#define GPIO_MAX 32 -#define GPIO_OUT(pin) ORION5X_DEV_BUS_REG(0x100) -#define GPIO_IO_CONF(pin) ORION5X_DEV_BUS_REG(0x104) -#define GPIO_BLINK_EN(pin) ORION5X_DEV_BUS_REG(0x108) -#define GPIO_IN_POL(pin) ORION5X_DEV_BUS_REG(0x10c) -#define GPIO_DATA_IN(pin) ORION5X_DEV_BUS_REG(0x110) -#define GPIO_EDGE_CAUSE(pin) ORION5X_DEV_BUS_REG(0x114) -#define GPIO_EDGE_MASK(pin) ORION5X_DEV_BUS_REG(0x118) -#define GPIO_LEVEL_MASK(pin) ORION5X_DEV_BUS_REG(0x11c) - -static inline int gpio_to_irq(int pin) -{ - return pin + IRQ_ORION5X_GPIO_START; -} - -static inline int irq_to_gpio(int irq) -{ - return irq - IRQ_ORION5X_GPIO_START; -} - - -#endif diff --git a/arch/arm/mach-orion5x/include/mach/orion5x.h b/arch/arm/mach-orion5x/include/mach/orion5x.h index 2d876657053..0a28bbc7689 100644 --- a/arch/arm/mach-orion5x/include/mach/orion5x.h +++ b/arch/arm/mach-orion5x/include/mach/orion5x.h @@ -73,6 +73,7 @@ #define ORION5X_DEV_BUS_PHYS_BASE (ORION5X_REGS_PHYS_BASE | 0x10000) #define ORION5X_DEV_BUS_VIRT_BASE (ORION5X_REGS_VIRT_BASE | 0x10000) #define ORION5X_DEV_BUS_REG(x) (ORION5X_DEV_BUS_VIRT_BASE | (x)) +#define GPIO_VIRT_BASE ORION5X_DEV_BUS_REG(0x0100) #define SPI_PHYS_BASE (ORION5X_DEV_BUS_PHYS_BASE | 0x0600) #define I2C_PHYS_BASE (ORION5X_DEV_BUS_PHYS_BASE | 0x1000) #define UART0_PHYS_BASE (ORION5X_DEV_BUS_PHYS_BASE | 0x2000) diff --git a/arch/arm/mach-orion5x/irq.c b/arch/arm/mach-orion5x/irq.c index d7512b925a8..ed85891f869 100644 --- a/arch/arm/mach-orion5x/irq.c +++ b/arch/arm/mach-orion5x/irq.c @@ -28,27 +28,12 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc) void __init orion5x_init_irq(void) { - int i; - orion_irq_init(0, (void __iomem *)MAIN_IRQ_MASK); /* - * Mask and clear GPIO IRQ interrupts - */ - writel(0x0, GPIO_LEVEL_MASK(0)); - writel(0x0, GPIO_EDGE_MASK(0)); - writel(0x0, GPIO_EDGE_CAUSE(0)); - - /* - * Register chained level handlers for GPIO IRQs by default. - * User can use set_type() if he wants to use edge types handlers. + * Initialize gpiolib for GPIOs 0-31. */ - for (i = IRQ_ORION5X_GPIO_START; i < NR_IRQS; i++) { - set_irq_chip(i, &orion_gpio_irq_chip); - set_irq_handler(i, handle_level_irq); - irq_desc[i].status |= IRQ_LEVEL; - set_irq_flags(i, IRQF_VALID); - } + orion_gpio_init(0, 32, GPIO_VIRT_BASE, 0, IRQ_ORION5X_GPIO_START); set_irq_chained_handler(IRQ_ORION5X_GPIO_0_7, gpio_irq_handler); set_irq_chained_handler(IRQ_ORION5X_GPIO_8_15, gpio_irq_handler); set_irq_chained_handler(IRQ_ORION5X_GPIO_16_23, gpio_irq_handler); diff --git a/arch/arm/mach-orion5x/mpp.c b/arch/arm/mach-orion5x/mpp.c index db485d3b814..2288207726e 100644 --- a/arch/arm/mach-orion5x/mpp.c +++ b/arch/arm/mach-orion5x/mpp.c @@ -124,9 +124,6 @@ void __init orion5x_mpp_conf(struct orion5x_mpp_mode *mode) u32 mpp_8_15_ctrl = readl(MPP_8_15_CTRL); u32 mpp_16_19_ctrl = readl(MPP_16_19_CTRL); - /* Initialize gpiolib. */ - orion_gpio_init(); - for ( ; mode->mpp >= 0; mode++) { u32 *reg; int num_type; diff --git a/arch/arm/plat-orion/gpio.c b/arch/arm/plat-orion/gpio.c index 5f352231481..078894bc3b9 100644 --- a/arch/arm/plat-orion/gpio.c +++ b/arch/arm/plat-orion/gpio.c @@ -17,55 +17,123 @@ #include <linux/io.h> #include <linux/gpio.h> -static DEFINE_SPINLOCK(gpio_lock); -static unsigned long gpio_valid_input[BITS_TO_LONGS(GPIO_MAX)]; -static unsigned long gpio_valid_output[BITS_TO_LONGS(GPIO_MAX)]; +/* + * GPIO unit register offsets. + */ +#define GPIO_OUT_OFF 0x0000 +#define GPIO_IO_CONF_OFF 0x0004 +#define GPIO_BLINK_EN_OFF 0x0008 +#define GPIO_IN_POL_OFF 0x000c +#define GPIO_DATA_IN_OFF 0x0010 +#define GPIO_EDGE_CAUSE_OFF 0x0014 +#define GPIO_EDGE_MASK_OFF 0x0018 +#define GPIO_LEVEL_MASK_OFF 0x001c + +struct orion_gpio_chip { + struct gpio_chip chip; + spinlock_t lock; + void __iomem *base; + unsigned long valid_input; + unsigned long valid_output; + int mask_offset; + int secondary_irq_base; +}; + +static void __iomem *GPIO_OUT(struct orion_gpio_chip *ochip) +{ + return ochip->base + GPIO_OUT_OFF; +} + +static void __iomem *GPIO_IO_CONF(struct orion_gpio_chip *ochip) +{ + return ochip->base + GPIO_IO_CONF_OFF; +} + +static void __iomem *GPIO_BLINK_EN(struct orion_gpio_chip *ochip) +{ + return ochip->base + GPIO_BLINK_EN_OFF; +} + +static void __iomem *GPIO_IN_POL(struct orion_gpio_chip *ochip) +{ + return ochip->base + GPIO_IN_POL_OFF; +} + +static void __iomem *GPIO_DATA_IN(struct orion_gpio_chip *ochip) +{ + return ochip->base + GPIO_DATA_IN_OFF; +} + +static void __iomem *GPIO_EDGE_CAUSE(struct orion_gpio_chip *ochip) +{ + return ochip->base + GPIO_EDGE_CAUSE_OFF; +} + +static void __iomem *GPIO_EDGE_MASK(struct orion_gpio_chip *ochip) +{ + return ochip->base + ochip->mask_offset + GPIO_EDGE_MASK_OFF; +} + +static void __iomem *GPIO_LEVEL_MASK(struct orion_gpio_chip *ochip) +{ + return ochip->base + ochip->mask_offset + GPIO_LEVEL_MASK_OFF; +} + -static inline void __set_direction(unsigned pin, int input) +static struct orion_gpio_chip orion_gpio_chips[2]; +static int orion_gpio_chip_count; + +static inline void +__set_direction(struct orion_gpio_chip *ochip, unsigned pin, int input) { u32 u; - u = readl(GPIO_IO_CONF(pin)); + u = readl(GPIO_IO_CONF(ochip)); if (input) - u |= 1 << (pin & 31); + u |= 1 << pin; else - u &= ~(1 << (pin & 31)); - writel(u, GPIO_IO_CONF(pin)); + u &= ~(1 << pin); + writel(u, GPIO_IO_CONF(ochip)); } -static void __set_level(unsigned pin, int high) +static void __set_level(struct orion_gpio_chip *ochip, unsigned pin, int high) { u32 u; - u = readl(GPIO_OUT(pin)); + u = readl(GPIO_OUT(ochip)); if (high) - u |= 1 << (pin & 31); + u |= 1 << pin; else - u &= ~(1 << (pin & 31)); - writel(u, GPIO_OUT(pin)); + u &= ~(1 << pin); + writel(u, GPIO_OUT(ochip)); } -static inline void __set_blinking(unsigned pin, int blink) +static inline void +__set_blinking(struct orion_gpio_chip *ochip, unsigned pin, int blink) { u32 u; - u = readl(GPIO_BLINK_EN(pin)); + u = readl(GPIO_BLINK_EN(ochip)); if (blink) - u |= 1 << (pin & 31); + u |= 1 << pin; else - u &= ~(1 << (pin & 31)); - writel(u, GPIO_BLINK_EN(pin)); + u &= ~(1 << pin); + writel(u, GPIO_BLINK_EN(ochip)); } -static inline int orion_gpio_is_valid(unsigned pin, int mode) +static inline int +orion_gpio_is_valid(struct orion_gpio_chip *ochip, unsigned pin, int mode) { - if (pin < GPIO_MAX) { - if ((mode & GPIO_INPUT_OK) && !test_bit(pin, gpio_valid_input)) - goto err_out; - if ((mode & GPIO_OUTPUT_OK) && !test_bit(pin, gpio_valid_output)) - goto err_out; - return true; - } + if (pin >= ochip->chip.ngpio) + goto err_out; + + if ((mode & GPIO_INPUT_OK) && !test_bit(pin, &ochip->valid_input)) + goto err_out; + + if ((mode & GPIO_OUTPUT_OK) && !test_bit(pin, &ochip->valid_output)) + goto err_out; + + return 1; err_out: pr_debug("%s: invalid GPIO %d\n", __func__, pin); @@ -75,134 +143,155 @@ err_out: /* * GENERIC_GPIO primitives. */ +static int orion_gpio_request(struct gpio_chip *chip, unsigned pin) +{ + struct orion_gpio_chip *ochip = + container_of(chip, struct orion_gpio_chip, chip); + + if (orion_gpio_is_valid(ochip, pin, GPIO_INPUT_OK) || + orion_gpio_is_valid(ochip, pin, GPIO_OUTPUT_OK)) + return 0; + + return -EINVAL; +} + static int orion_gpio_direction_input(struct gpio_chip *chip, unsigned pin) { + struct orion_gpio_chip *ochip = + container_of(chip, struct orion_gpio_chip, chip); unsigned long flags; - if (!orion_gpio_is_valid(pin, GPIO_INPUT_OK)) + if (!orion_gpio_is_valid(ochip, pin, GPIO_INPUT_OK)) return -EINVAL; - spin_lock_irqsave(&gpio_lock, flags); - - /* Configure GPIO direction. */ - __set_direction(pin, 1); - - spin_unlock_irqrestore(&gpio_lock, flags); + spin_lock_irqsave(&ochip->lock, flags); + __set_direction(ochip, pin, 1); + spin_unlock_irqrestore(&ochip->lock, flags); return 0; } -static int orion_gpio_get_value(struct gpio_chip *chip, unsigned pin) +static int orion_gpio_get(struct gpio_chip *chip, unsigned pin) { + struct orion_gpio_chip *ochip = + container_of(chip, struct orion_gpio_chip, chip); int val; - if (readl(GPIO_IO_CONF(pin)) & (1 << (pin & 31))) - val = readl(GPIO_DATA_IN(pin)) ^ readl(GPIO_IN_POL(pin)); - else - val = readl(GPIO_OUT(pin)); + if (readl(GPIO_IO_CONF(ochip)) & (1 << pin)) { + val = readl(GPIO_DATA_IN(ochip)) ^ readl(GPIO_IN_POL(ochip)); + } else { + val = readl(GPIO_OUT(ochip)); + } - return (val >> (pin & 31)) & 1; + return (val >> pin) & 1; } -static int orion_gpio_direction_output(struct gpio_chip *chip, unsigned pin, - int value) +static int +orion_gpio_direction_output(struct gpio_chip *chip, unsigned pin, int value) { + struct orion_gpio_chip *ochip = + container_of(chip, struct orion_gpio_chip, chip); unsigned long flags; - if (!orion_gpio_is_valid(pin, GPIO_OUTPUT_OK)) + if (!orion_gpio_is_valid(ochip, pin, GPIO_OUTPUT_OK)) return -EINVAL; - spin_lock_irqsave(&gpio_lock, flags); - - /* Disable blinking. */ - __set_blinking(pin, 0); - - /* Configure GPIO output value. */ - __set_level(pin, value); - - /* Configure GPIO direction. */ - __set_direction(pin, 0); - - spin_unlock_irqrestore(&gpio_lock, flags); + spin_lock_irqsave(&ochip->lock, flags); + __set_blinking(ochip, pin, 0); + __set_level(ochip, pin, value); + __set_direction(ochip, pin, 0); + spin_unlock_irqrestore(&ochip->lock, flags); return 0; } -static void orion_gpio_set_value(struct gpio_chip *chip, unsigned pin, - int value) +static void orion_gpio_set(struct gpio_chip *chip, unsigned pin, int value) { + struct orion_gpio_chip *ochip = + container_of(chip, struct orion_gpio_chip, chip); unsigned long flags; - spin_lock_irqsave(&gpio_lock, flags); - - /* Configure GPIO output value. */ - __set_level(pin, value); - - spin_unlock_irqrestore(&gpio_lock, flags); + spin_lock_irqsave(&ochip->lock, flags); + __set_level(ochip, pin, value); + spin_unlock_irqrestore(&ochip->lock, flags); } -static int orion_gpio_request(struct gpio_chip *chip, unsigned pin) +static int orion_gpio_to_irq(struct gpio_chip *chip, unsigned pin) { - if (orion_gpio_is_valid(pin, GPIO_INPUT_OK) || - orion_gpio_is_valid(pin, GPIO_OUTPUT_OK)) - return 0; - return -EINVAL; -} + struct orion_gpio_chip *ochip = + container_of(chip, struct orion_gpio_chip, chip); -static struct gpio_chip orion_gpiochip = { - .label = "orion_gpio", - .direction_input = orion_gpio_direction_input, - .get = orion_gpio_get_value, - .direction_output = orion_gpio_direction_output, - .set = orion_gpio_set_value, - .request = orion_gpio_request, - .base = 0, - .ngpio = GPIO_MAX, - .can_sleep = 0, -}; - -void __init orion_gpio_init(void) -{ - gpiochip_add(&orion_gpiochip); + return ochip->secondary_irq_base + pin; } + /* * Orion-specific GPIO API extensions. */ +static struct orion_gpio_chip *orion_gpio_chip_find(int pin) +{ + int i; + + for (i = 0; i < orion_gpio_chip_count; i++) { + struct orion_gpio_chip *ochip = orion_gpio_chips + i; + struct gpio_chip *chip = &ochip->chip; + + if (pin >= chip->base && pin < chip->base + chip->ngpio) + return ochip; + } + + return NULL; +} + void __init orion_gpio_set_unused(unsigned pin) { + struct orion_gpio_chip *ochip = orion_gpio_chip_find(pin); + + if (ochip == NULL) + return; + + pin -= ochip->chip.base; + /* Configure as output, drive low. */ - __set_level(pin, 0); - __set_direction(pin, 0); + __set_level(ochip, pin, 0); + __set_direction(ochip, pin, 0); } void __init orion_gpio_set_valid(unsigned pin, int mode) { + struct orion_gpio_chip *ochip = orion_gpio_chip_find(pin); + + if (ochip == NULL) + return; + + pin -= ochip->chip.base; + if (mode == 1) mode = GPIO_INPUT_OK | GPIO_OUTPUT_OK; + if (mode & GPIO_INPUT_OK) - __set_bit(pin, gpio_valid_input); + __set_bit(pin, &ochip->valid_input); else - __clear_bit(pin, gpio_valid_input); + __clear_bit(pin, &ochip->valid_input); + if (mode & GPIO_OUTPUT_OK) - __set_bit(pin, gpio_valid_output); + __set_bit(pin, &ochip->valid_output); else - __clear_bit(pin, gpio_valid_output); + __clear_bit(pin, &ochip->valid_output); } void orion_gpio_set_blink(unsigned pin, int blink) { + struct orion_gpio_chip *ochip = orion_gpio_chip_find(pin); unsigned long flags; - spin_lock_irqsave(&gpio_lock, flags); + if (ochip == NULL) + return; - /* Set output value to zero. */ - __set_level(pin, 0); - - /* Set blinking. */ - __set_blinking(pin, blink); - - spin_unlock_irqrestore(&gpio_lock, flags); + spin_lock_irqsave(&ochip->lock, flags); + __set_level(ochip, pin, 0); + __set_blinking(ochip, pin, blink); + spin_unlock_irqrestore(&ochip->lock, flags); } EXPORT_SYMBOL(orion_gpio_set_blink); @@ -234,59 +323,78 @@ EXPORT_SYMBOL(orion_gpio_set_blink); ****************************************************************************/ static void gpio_irq_ack(struct irq_data *d) { - int type = irq_desc[d->irq].status & IRQ_TYPE_SENSE_MASK; + struct orion_gpio_chip *ochip = irq_data_get_irq_chip_data(d); + int type; + + type = irq_desc[d->irq].status & IRQ_TYPE_SENSE_MASK; if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) { - int pin = irq_to_gpio(d->irq); - writel(~(1 << (pin & 31)), GPIO_EDGE_CAUSE(pin)); + int pin = d->irq - ochip->secondary_irq_base; + + writel(~(1 << pin), GPIO_EDGE_CAUSE(ochip)); } } static void gpio_irq_mask(struct irq_data *d) { - int pin = irq_to_gpio(d->irq); - int type = irq_desc[d->irq].status & IRQ_TYPE_SENSE_MASK; - u32 reg = (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) ? - GPIO_EDGE_MASK(pin) : GPIO_LEVEL_MASK(pin); - u32 u = readl(reg); - u &= ~(1 << (pin & 31)); - writel(u, reg); + struct orion_gpio_chip *ochip = irq_data_get_irq_chip_data(d); + int type; + void __iomem *reg; + int pin; + + type = irq_desc[d->irq].status & IRQ_TYPE_SENSE_MASK; + if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) + reg = GPIO_EDGE_MASK(ochip); + else + reg = GPIO_LEVEL_MASK(ochip); + + pin = d->irq - ochip->secondary_irq_base; + + writel(readl(reg) & ~(1 << pin), reg); } static void gpio_irq_unmask(struct irq_data *d) { - int pin = irq_to_gpio(d->irq); - int type = irq_desc[d->irq].status & IRQ_TYPE_SENSE_MASK; - u32 reg = (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) ? - GPIO_EDGE_MASK(pin) : GPIO_LEVEL_MASK(pin); - u32 u = readl(reg); - u |= 1 << (pin & 31); - writel(u, reg); + struct orion_gpio_chip *ochip = irq_data_get_irq_chip_data(d); + int type; + void __iomem *reg; + int pin; + + type = irq_desc[d->irq].status & IRQ_TYPE_SENSE_MASK; + if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) + reg = GPIO_EDGE_MASK(ochip); + else + reg = GPIO_LEVEL_MASK(ochip); + + pin = d->irq - ochip->secondary_irq_base; + + writel(readl(reg) | (1 << pin), reg); } static int gpio_irq_set_type(struct irq_data *d, u32 type) { - int pin = irq_to_gpio(d->irq); - struct irq_desc *desc; + struct orion_gpio_chip *ochip = irq_data_get_irq_chip_data(d); + int pin; u32 u; - u = readl(GPIO_IO_CONF(pin)) & (1 << (pin & 31)); + pin = d->irq - ochip->secondary_irq_base; + + u = readl(GPIO_IO_CONF(ochip)) & (1 << pin); if (!u) { printk(KERN_ERR "orion gpio_irq_set_type failed " "(irq %d, pin %d).\n", d->irq, pin); return -EINVAL; } - desc = irq_desc + d->irq; - /* * Set edge/level type. */ if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) { - desc->handle_irq = handle_edge_irq; + set_irq_handler(d->irq, handle_edge_irq); } else if (type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW)) { - desc->handle_irq = handle_level_irq; + set_irq_handler(d->irq, handle_level_irq); } else { - printk(KERN_ERR "failed to set irq=%d (type=%d)\n", d->irq, type); + printk(KERN_ERR "failed to set irq=%d (type=%d)\n", + d->irq, type); return -EINVAL; } @@ -294,31 +402,29 @@ static int gpio_irq_set_type(struct irq_data *d, u32 type) * Configure interrupt polarity. */ if (type == IRQ_TYPE_EDGE_RISING || type == IRQ_TYPE_LEVEL_HIGH) { - u = readl(GPIO_IN_POL(pin)); - u &= ~(1 << (pin & 31)); - writel(u, GPIO_IN_POL(pin)); + u = readl(GPIO_IN_POL(ochip)); + u &= ~(1 << pin); + writel(u, GPIO_IN_POL(ochip)); } else if (type == IRQ_TYPE_EDGE_FALLING || type == IRQ_TYPE_LEVEL_LOW) { - u = readl(GPIO_IN_POL(pin)); - u |= 1 << (pin & 31); - writel(u, GPIO_IN_POL(pin)); + u = readl(GPIO_IN_POL(ochip)); + u |= 1 << pin; + writel(u, GPIO_IN_POL(ochip)); } else if (type == IRQ_TYPE_EDGE_BOTH) { u32 v; - v = readl(GPIO_IN_POL(pin)) ^ readl(GPIO_DATA_IN(pin)); + v = readl(GPIO_IN_POL(ochip)) ^ readl(GPIO_DATA_IN(ochip)); /* * set initial polarity based on current input level */ - u = readl(GPIO_IN_POL(pin)); - if (v & (1 << (pin & 31))) - u |= 1 << (pin & 31); /* falling */ + u = readl(GPIO_IN_POL(ochip)); + if (v & (1 << pin)) + u |= 1 << pin; /* falling */ else - u &= ~(1 << (pin & 31)); /* rising */ - writel(u, GPIO_IN_POL(pin)); + u &= ~(1 << pin); /* rising */ + writel(u, GPIO_IN_POL(ochip)); } - desc->status = (desc->status & ~IRQ_TYPE_SENSE_MASK) | type; - return 0; } @@ -330,29 +436,87 @@ struct irq_chip orion_gpio_irq_chip = { .irq_set_type = gpio_irq_set_type, }; +void __init orion_gpio_init(int gpio_base, int ngpio, + u32 base, int mask_offset, int secondary_irq_base) +{ + struct orion_gpio_chip *ochip; + int i; + + if (orion_gpio_chip_count == ARRAY_SIZE(orion_gpio_chips)) + return; + + ochip = orion_gpio_chips + orion_gpio_chip_count; + ochip->chip.label = "orion_gpio"; + ochip->chip.request = orion_gpio_request; + ochip->chip.direction_input = orion_gpio_direction_input; + ochip->chip.get = orion_gpio_get; + ochip->chip.direction_output = orion_gpio_direction_output; + ochip->chip.set = orion_gpio_set; + ochip->chip.to_irq = orion_gpio_to_irq; + ochip->chip.base = gpio_base; + ochip->chip.ngpio = ngpio; + ochip->chip.can_sleep = 0; + spin_lock_init(&ochip->lock); + ochip->base = (void __iomem *)base; + ochip->valid_input = 0; + ochip->valid_output = 0; + ochip->mask_offset = mask_offset; + ochip->secondary_irq_base = secondary_irq_base; + + gpiochip_add(&ochip->chip); + + orion_gpio_chip_count++; + + /* + * Mask and clear GPIO interrupts. + */ + writel(0, GPIO_EDGE_CAUSE(ochip)); + writel(0, GPIO_EDGE_MASK(ochip)); + writel(0, GPIO_LEVEL_MASK(ochip)); + + for (i = 0; i < ngpio; i++) { + unsigned int irq = secondary_irq_base + i; + + set_irq_chip(irq, &orion_gpio_irq_chip); + set_irq_handler(irq, handle_level_irq); + set_irq_chip_data(irq, ochip); + irq_desc[irq].status |= IRQ_LEVEL; + set_irq_flags(irq, IRQF_VALID); + } +} + void orion_gpio_irq_handler(int pinoff) { + struct orion_gpio_chip *ochip; u32 cause; - int pin; + int i; - cause = readl(GPIO_DATA_IN(pinoff)) & readl(GPIO_LEVEL_MASK(pinoff)); - cause |= readl(GPIO_EDGE_CAUSE(pinoff)) & readl(GPIO_EDGE_MASK(pinoff)); + ochip = orion_gpio_chip_find(pinoff); + if (ochip == NULL) + return; - for (pin = pinoff; pin < pinoff + 8; pin++) { - int irq = gpio_to_irq(pin); - struct irq_desc *desc = irq_desc + irq; + cause = readl(GPIO_DATA_IN(ochip)) & readl(GPIO_LEVEL_MASK(ochip)); + cause |= readl(GPIO_EDGE_CAUSE(ochip)) & readl(GPIO_EDGE_MASK(ochip)); - if (!(cause & (1 << (pin & 31)))) + for (i = 0; i < ochip->chip.ngpio; i++) { + int irq; + struct irq_desc *desc; + + irq = ochip->secondary_irq_base + i; + + if (!(cause & (1 << i))) continue; + desc = irq_desc + irq; if ((desc->status & IRQ_TYPE_SENSE_MASK) == IRQ_TYPE_EDGE_BOTH) { /* Swap polarity (race with GPIO line) */ u32 polarity; - polarity = readl(GPIO_IN_POL(pin)); - polarity ^= 1 << (pin & 31); - writel(polarity, GPIO_IN_POL(pin)); + polarity = readl(GPIO_IN_POL(ochip)); + polarity ^= 1 << i; + writel(polarity, GPIO_IN_POL(ochip)); } + desc_handle_irq(irq, desc); } } diff --git a/arch/arm/plat-orion/include/plat/gpio.h b/arch/arm/plat-orion/include/plat/gpio.h index 07c430fdc9e..5578b9803fc 100644 --- a/arch/arm/plat-orion/include/plat/gpio.h +++ b/arch/arm/plat-orion/include/plat/gpio.h @@ -12,6 +12,7 @@ #define __PLAT_GPIO_H #include <linux/init.h> +#include <asm-generic/gpio.h> /* * GENERIC_GPIO primitives. @@ -19,6 +20,7 @@ #define gpio_get_value __gpio_get_value #define gpio_set_value __gpio_set_value #define gpio_cansleep __gpio_cansleep +#define gpio_to_irq __gpio_to_irq /* * Orion-specific GPIO API extensions. @@ -31,7 +33,8 @@ void orion_gpio_set_blink(unsigned pin, int blink); void orion_gpio_set_valid(unsigned pin, int mode); /* Initialize gpiolib. */ -void __init orion_gpio_init(void); +void __init orion_gpio_init(int gpio_base, int ngpio, + u32 base, int mask_offset, int secondary_irq_base); /* * GPIO interrupt handling. |