[ARM] 3371/1: ep93xx: gpio support

Patch from Lennert Buytenhek

Add support for setting the direction of and getting/setting the
value of the 64 GPIO lines.

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

2 files changed, 108 insertions, 0 deletions

diff --git a/include/asm-arm/arch-ep93xx/ep93xx-regs.h b/include/asm-arm/arch-ep93xx/ep93xx-regs.h
index 693f23886e85..c1efacc83b75 100644
--- a/include/asm-arm/arch-ep93xx/ep93xx-regs.h
+++ b/include/asm-arm/arch-ep93xx/ep93xx-regs.h
@@ -71,6 +71,7 @@
 #define EP93XX_SECURITY_BASE            (EP93XX_APB_VIRT_BASE + 0x00030000)
 
 #define EP93XX_GPIO_BASE                (EP93XX_APB_VIRT_BASE + 0x00040000)
+#define EP93XX_GPIO_REG(x)              (EP93XX_GPIO_BASE + (x))
 
 #define EP93XX_AAC_BASE                 (EP93XX_APB_VIRT_BASE + 0x00080000)
 
diff --git a/include/asm-arm/arch-ep93xx/gpio.h b/include/asm-arm/arch-ep93xx/gpio.h
new file mode 100644
index 000000000000..1ee14a14cba0
--- /dev/null
+++ b/include/asm-arm/arch-ep93xx/gpio.h
@@ -0,0 +1,107 @@
+/*
+ * linux/include/asm-arm/arch-ep93xx/gpio.h
+ */
+
+#ifndef __ASM_ARCH_GPIO_H
+#define __ASM_ARCH_GPIO_H
+
+#define GPIO_IN                         0
+#define GPIO_OUT                        1
+
+#define EP93XX_GPIO_LOW                 0
+#define EP93XX_GPIO_HIGH                1
+
+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);
+
+/* GPIO port A.  */
+#define EP93XX_GPIO_LINE_A(x)           ((x) + 0)
+#define EP93XX_GPIO_LINE_EGPIO0         EP93XX_GPIO_LINE_A(0)
+#define EP93XX_GPIO_LINE_EGPIO1         EP93XX_GPIO_LINE_A(1)
+#define EP93XX_GPIO_LINE_EGPIO2         EP93XX_GPIO_LINE_A(2)
+#define EP93XX_GPIO_LINE_EGPIO3         EP93XX_GPIO_LINE_A(3)
+#define EP93XX_GPIO_LINE_EGPIO4         EP93XX_GPIO_LINE_A(4)
+#define EP93XX_GPIO_LINE_EGPIO5         EP93XX_GPIO_LINE_A(5)
+#define EP93XX_GPIO_LINE_EGPIO6         EP93XX_GPIO_LINE_A(6)
+#define EP93XX_GPIO_LINE_EGPIO7         EP93XX_GPIO_LINE_A(7)
+
+/* GPIO port B.  */
+#define EP93XX_GPIO_LINE_B(x)           ((x) + 8)
+#define EP93XX_GPIO_LINE_EGPIO8         EP93XX_GPIO_LINE_B(0)
+#define EP93XX_GPIO_LINE_EGPIO9         EP93XX_GPIO_LINE_B(1)
+#define EP93XX_GPIO_LINE_EGPIO10        EP93XX_GPIO_LINE_B(2)
+#define EP93XX_GPIO_LINE_EGPIO11        EP93XX_GPIO_LINE_B(3)
+#define EP93XX_GPIO_LINE_EGPIO12        EP93XX_GPIO_LINE_B(4)
+#define EP93XX_GPIO_LINE_EGPIO13        EP93XX_GPIO_LINE_B(5)
+#define EP93XX_GPIO_LINE_EGPIO14        EP93XX_GPIO_LINE_B(6)
+#define EP93XX_GPIO_LINE_EGPIO15        EP93XX_GPIO_LINE_B(7)
+
+/* GPIO port C.  */
+#define EP93XX_GPIO_LINE_C(x)           ((x) + 16)
+#define EP93XX_GPIO_LINE_ROW0           EP93XX_GPIO_LINE_C(0)
+#define EP93XX_GPIO_LINE_ROW1           EP93XX_GPIO_LINE_C(1)
+#define EP93XX_GPIO_LINE_ROW2           EP93XX_GPIO_LINE_C(2)
+#define EP93XX_GPIO_LINE_ROW3           EP93XX_GPIO_LINE_C(3)
+#define EP93XX_GPIO_LINE_ROW4           EP93XX_GPIO_LINE_C(4)
+#define EP93XX_GPIO_LINE_ROW5           EP93XX_GPIO_LINE_C(5)
+#define EP93XX_GPIO_LINE_ROW6           EP93XX_GPIO_LINE_C(6)
+#define EP93XX_GPIO_LINE_ROW7           EP93XX_GPIO_LINE_C(7)
+
+/* GPIO port D.  */
+#define EP93XX_GPIO_LINE_D(x)           ((x) + 24)
+#define EP93XX_GPIO_LINE_COL0           EP93XX_GPIO_LINE_D(0)
+#define EP93XX_GPIO_LINE_COL1           EP93XX_GPIO_LINE_D(1)
+#define EP93XX_GPIO_LINE_COL2           EP93XX_GPIO_LINE_D(2)
+#define EP93XX_GPIO_LINE_COL3           EP93XX_GPIO_LINE_D(3)
+#define EP93XX_GPIO_LINE_COL4           EP93XX_GPIO_LINE_D(4)
+#define EP93XX_GPIO_LINE_COL5           EP93XX_GPIO_LINE_D(5)
+#define EP93XX_GPIO_LINE_COL6           EP93XX_GPIO_LINE_D(6)
+#define EP93XX_GPIO_LINE_COL7           EP93XX_GPIO_LINE_D(7)
+
+/* GPIO port E.  */
+#define EP93XX_GPIO_LINE_E(x)           ((x) + 32)
+#define EP93XX_GPIO_LINE_GRLED          EP93XX_GPIO_LINE_E(0)
+#define EP93XX_GPIO_LINE_RDLED          EP93XX_GPIO_LINE_E(1)
+#define EP93XX_GPIO_LINE_DIORn          EP93XX_GPIO_LINE_E(2)
+#define EP93XX_GPIO_LINE_IDECS1n        EP93XX_GPIO_LINE_E(3)
+#define EP93XX_GPIO_LINE_IDECS2n        EP93XX_GPIO_LINE_E(4)
+#define EP93XX_GPIO_LINE_IDEDA0         EP93XX_GPIO_LINE_E(5)
+#define EP93XX_GPIO_LINE_IDEDA1         EP93XX_GPIO_LINE_E(6)
+#define EP93XX_GPIO_LINE_IDEDA2         EP93XX_GPIO_LINE_E(7)
+
+/* GPIO port F.  */
+#define EP93XX_GPIO_LINE_F(x)           ((x) + 40)
+#define EP93XX_GPIO_LINE_WP             EP93XX_GPIO_LINE_F(0)
+#define EP93XX_GPIO_LINE_MCCD1          EP93XX_GPIO_LINE_F(1)
+#define EP93XX_GPIO_LINE_MCCD2          EP93XX_GPIO_LINE_F(2)
+#define EP93XX_GPIO_LINE_MCBVD1         EP93XX_GPIO_LINE_F(3)
+#define EP93XX_GPIO_LINE_MCBVD2         EP93XX_GPIO_LINE_F(4)
+#define EP93XX_GPIO_LINE_VS1            EP93XX_GPIO_LINE_F(5)
+#define EP93XX_GPIO_LINE_READY          EP93XX_GPIO_LINE_F(6)
+#define EP93XX_GPIO_LINE_VS2            EP93XX_GPIO_LINE_F(7)
+
+/* GPIO port G.  */
+#define EP93XX_GPIO_LINE_G(x)           ((x) + 48)
+#define EP93XX_GPIO_LINE_EECLK          EP93XX_GPIO_LINE_G(0)
+#define EP93XX_GPIO_LINE_EEDAT          EP93XX_GPIO_LINE_G(1)
+#define EP93XX_GPIO_LINE_SLA0           EP93XX_GPIO_LINE_G(2)
+#define EP93XX_GPIO_LINE_SLA1           EP93XX_GPIO_LINE_G(3)
+#define EP93XX_GPIO_LINE_DD12           EP93XX_GPIO_LINE_G(4)
+#define EP93XX_GPIO_LINE_DD13           EP93XX_GPIO_LINE_G(5)
+#define EP93XX_GPIO_LINE_DD14           EP93XX_GPIO_LINE_G(6)
+#define EP93XX_GPIO_LINE_DD15           EP93XX_GPIO_LINE_G(7)
+
+/* GPIO port H.  */
+#define EP93XX_GPIO_LINE_H(x)           ((x) + 56)
+#define EP93XX_GPIO_LINE_DD0            EP93XX_GPIO_LINE_H(0)
+#define EP93XX_GPIO_LINE_DD1            EP93XX_GPIO_LINE_H(1)
+#define EP93XX_GPIO_LINE_DD2            EP93XX_GPIO_LINE_H(2)
+#define EP93XX_GPIO_LINE_DD3            EP93XX_GPIO_LINE_H(3)
+#define EP93XX_GPIO_LINE_DD4            EP93XX_GPIO_LINE_H(4)
+#define EP93XX_GPIO_LINE_DD5            EP93XX_GPIO_LINE_H(5)
+#define EP93XX_GPIO_LINE_DD6            EP93XX_GPIO_LINE_H(6)
+#define EP93XX_GPIO_LINE_DD7            EP93XX_GPIO_LINE_H(7)
+
+
+#endif