[ARM] 3827/1: iop3xx: add common gpio module

Implement the gpio_line_{config,get,set} API for iop3xx.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 23 insertions, 0 deletions

diff --git a/include/asm-arm/arch-iop32x/iop321.h b/include/asm-arm/arch-iop32x/iop321.h
index 34fe07f0a44e..1e57e0094767 100644
--- a/include/asm-arm/arch-iop32x/iop321.h
+++ b/include/asm-arm/arch-iop32x/iop321.h
@@ -216,6 +216,7 @@
  * Peripherals that are shared between the iop32x and iop33x but
  * located at different addresses.
  */
+#define IOP3XX_GPIO_REG(reg)   (IOP3XX_PERIPHERAL_VIRT_BASE + 0x07c0 + (reg))
 #define IOP3XX_TIMER_REG(reg)  (IOP3XX_PERIPHERAL_VIRT_BASE + 0x07e0 + (reg))
 
 #include <asm/hardware/iop3xx.h>
diff --git a/include/asm-arm/arch-iop33x/iop331.h b/include/asm-arm/arch-iop33x/iop331.h
index 4ebcd7197c86..d12a95aa967a 100644
--- a/include/asm-arm/arch-iop33x/iop331.h
+++ b/include/asm-arm/arch-iop33x/iop331.h
@@ -221,6 +221,7 @@
  * Peripherals that are shared between the iop32x and iop33x but
  * located at different addresses.
  */
+#define IOP3XX_GPIO_REG(reg)   (IOP3XX_PERIPHERAL_VIRT_BASE + 0x1780 + (reg))
 #define IOP3XX_TIMER_REG(reg)  (IOP3XX_PERIPHERAL_VIRT_BASE + 0x07d0 + (reg))
 
 #include <asm/hardware/iop3xx.h>
diff --git a/include/asm-arm/hardware/iop3xx.h b/include/asm-arm/hardware/iop3xx.h
index 98b7cbc405e6..f3c61d041fca 100644
--- a/include/asm-arm/hardware/iop3xx.h
+++ b/include/asm-arm/hardware/iop3xx.h
@@ -16,6 +16,22 @@
 #define __IOP3XX_H
 
 /*
+ * IOP3XX GPIO handling
+ */
+#define GPIO_IN                 0
+#define GPIO_OUT                1
+#define GPIO_LOW                0
+#define GPIO_HIGH               1
+#define IOP3XX_GPIO_LINE(x)     (x)
+
+#ifndef __ASSEMBLY__
+extern void gpio_line_config(int line, int direction);
+extern int  gpio_line_get(int line);
+extern void gpio_line_set(int line, int value);
+#endif
+
+
+/*
  * IOP3XX processor registers
  */
 #define IOP3XX_PERIPHERAL_PHYS_BASE     0xffffe000
@@ -81,6 +97,11 @@
 #define IOP3XX_PCIXSR           (volatile u32 *)IOP3XX_REG_ADDR(0x01e4)
 #define IOP3XX_PCIIRSR          (volatile u32 *)IOP3XX_REG_ADDR(0x01ec)
 
+/* General Purpose I/O  */
+#define IOP3XX_GPOE             (volatile u32 *)IOP3XX_GPIO_REG(0x0004)
+#define IOP3XX_GPID             (volatile u32 *)IOP3XX_GPIO_REG(0x0008)
+#define IOP3XX_GPOD             (volatile u32 *)IOP3XX_GPIO_REG(0x000c)
+
 /* Timers  */
 #define IOP3XX_TU_TMR0          (volatile u32 *)IOP3XX_TIMER_REG(0x0000)
 #define IOP3XX_TU_TMR1          (volatile u32 *)IOP3XX_TIMER_REG(0x0004)