[PATCH 02/16] ARM: Remove dependency of plat-orion GPIO code on mach directory includes.
Lennert Buytenhek
buytenh at wantstofly.org
Tue Dec 14 21:02:33 EST 2010
This patch makes the various mach dirs that use the plat-orion GPIO
code pass in GPIO-related platform info (GPIO controller base address,
secondary base IRQ number, etc) explicitly, instead of having
plat-orion get those values by including a mach dir include file --
the latter mechanism is problematic if you want to support multiple
ARM platforms in the same kernel image.
Signed-off-by: Lennert Buytenhek <buytenh at secretlab.ca>
---
arch/arm/mach-dove/include/mach/dove.h | 3 +-
arch/arm/mach-dove/include/mach/gpio.h | 40 --
arch/arm/mach-dove/irq.c | 27 +-
arch/arm/mach-kirkwood/include/mach/gpio.h | 29 --
arch/arm/mach-kirkwood/include/mach/kirkwood.h | 2 +
arch/arm/mach-kirkwood/irq.c | 22 +-
arch/arm/mach-kirkwood/mpp.c | 3 -
arch/arm/mach-mv78xx0/include/mach/gpio.h | 31 --
arch/arm/mach-mv78xx0/include/mach/mv78xx0.h | 1 +
arch/arm/mach-mv78xx0/irq.c | 22 +-
arch/arm/mach-mv78xx0/mpp.c | 3 -
arch/arm/mach-orion5x/include/mach/gpio.h | 28 --
arch/arm/mach-orion5x/include/mach/orion5x.h | 1 +
arch/arm/mach-orion5x/irq.c | 19 +-
arch/arm/mach-orion5x/mpp.c | 3 -
arch/arm/plat-orion/gpio.c | 475 ++++++++++++++++--------
arch/arm/plat-orion/include/plat/gpio.h | 5 +-
17 files changed, 354 insertions(+), 360 deletions(-)
diff --git a/arch/arm/mach-dove/include/mach/dove.h b/arch/arm/mach-dove/include/mach/dove.h
index f6a0839..df51131 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_MPP_GENERAL_VIRT_BASE (DOVE_SB_REGS_VIRT_BASE | 0xe803c)
#define DOVE_AU1_SPDIFO_GPIO_EN (1 << 1)
#define DOVE_NAND_GPIO_EN (1 << 0)
diff --git a/arch/arm/mach-dove/include/mach/gpio.h b/arch/arm/mach-dove/include/mach/gpio.h
index 0ee70ff..e7e5101 100644
--- a/arch/arm/mach-dove/include/mach/gpio.h
+++ b/arch/arm/mach-dove/include/mach/gpio.h
@@ -6,44 +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 64
-
-#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 : GPIO_BASE_HI)
-
-#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 61bfcb3..a6e9c63 100644
--- a/arch/arm/mach-dove/irq.c
+++ b/arch/arm/mach-dove/irq.c
@@ -99,11 +99,18 @@ 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 0-63.
*/
- 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);
/*
* Mask and clear PMU interrupts
@@ -111,18 +118,6 @@ 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 81b335e..84f340b 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 6e924b3..010bdeb 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 28020ab..cbdb586 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 27901f7..7ce2018 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 d9d1535..77e1b84 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 788bdac..e02506e 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 22b4ff8..08da497 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 84db2df..65b72c4 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 d8182e8..a1d0b78 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 2d87665..0a28bbc 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 d7512b9..ed85891 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 db485d3..2288207 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 e814803..078894b 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 inline void __set_direction(unsigned pin, int input)
+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 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);
-
- /* Set output value to zero. */
- __set_level(pin, 0);
+ if (ochip == NULL)
+ return;
- /* 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);
@@ -232,62 +321,80 @@ EXPORT_SYMBOL(orion_gpio_set_blink);
* polarity LEVEL mask
*
****************************************************************************/
-
-static void gpio_irq_ack(u32 irq)
+static void gpio_irq_ack(struct irq_data *d)
{
- int type = irq_desc[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(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(u32 irq)
+static void gpio_irq_mask(struct irq_data *d)
{
- int pin = irq_to_gpio(irq);
- int type = irq_desc[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(u32 irq)
+static void gpio_irq_unmask(struct irq_data *d)
{
- int pin = irq_to_gpio(irq);
- int type = irq_desc[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(u32 irq, u32 type)
+static int gpio_irq_set_type(struct irq_data *d, u32 type)
{
- int pin = irq_to_gpio(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", irq, pin);
+ "(irq %d, pin %d).\n", d->irq, pin);
return -EINVAL;
}
- desc = irq_desc + 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", irq, type);
+ printk(KERN_ERR "failed to set irq=%d (type=%d)\n",
+ d->irq, type);
return -EINVAL;
}
@@ -295,65 +402,121 @@ static int gpio_irq_set_type(u32 irq, 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;
}
struct irq_chip orion_gpio_irq_chip = {
.name = "orion_gpio_irq",
- .ack = gpio_irq_ack,
- .mask = gpio_irq_mask,
- .unmask = gpio_irq_unmask,
- .set_type = gpio_irq_set_type,
+ .irq_ack = gpio_irq_ack,
+ .irq_mask = gpio_irq_mask,
+ .irq_unmask = gpio_irq_unmask,
+ .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 07c430f..5578b98 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.
--
1.7.1
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