ARM: 7104/1: plat-pxa: break out GPIO driver specifics

[pandora-kernel.git] / arch / arm / mach-mmp / include / mach / gpio-pxa.h

diff --git a/arch/arm/mach-mmp/include/mach/gpio-pxa.h b/arch/arm/mach-mmp/include/mach/gpio-pxa.h
new file mode 100644 (file)
index 0000000..c017a98
--- /dev/null
+++ b/arch/arm/mach-mmp/include/mach/gpio-pxa.h
@@ -0,0 +1,30 @@
+#ifndef __ASM_MACH_GPIO_PXA_H
+#define __ASM_MACH_GPIO_PXA_H
+
+#include <mach/addr-map.h>
+#include <mach/irqs.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                IRQ_GPIO_NUM
+
+#define gpio_to_bank(gpio)     ((gpio) >> 5)
+
+/* 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-pxa.h>
+
+#endif /* __ASM_MACH_GPIO_PXA_H */