1 files changed, 119 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/gpio.h b/arch/powerpc/include/asm/gpio.h
new file mode 100644
index 0000000..23e29b1
--- /dev/null
+++ b/arch/powerpc/include/asm/gpio.h
@@ -0,0 +1,119 @@
+/*
+ * (C) Copyright 2007-2008
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_PPC_GPIO_H
+#define __ASM_PPC_GPIO_H
+
+#include <asm/types.h>
+
+/* 4xx PPC's have 2 GPIO controllers */
+#if defined(CONFIG_405EZ) ||					\
+	defined(CONFIG_440EP) || defined(CONFIG_440GR) ||	\
+	defined(CONFIG_440EPX) || defined(CONFIG_440GRX) ||	\
+	defined(CONFIG_460EX) || defined(CONFIG_460GT)
+#define GPIO_GROUP_MAX	2
+#else
+#define GPIO_GROUP_MAX	1
+#endif
+
+/* GPIO controller */
+struct ppc4xx_gpio {
+	u32 or;		/* Output Control */
+	u32 tcr;	/* Tri-State Control */
+	u32 osl;	/* Output Select 16..31 */
+	u32 osh;	/* Output Select 0..15 */
+	u32 tsl;	/* Tri-State Select 16..31 */
+	u32 tsh;	/* Tri-State Select 0..15 */
+	u32 odr;	/* Open Drain */
+	u32 ir;		/* Input */
+	u32 rr1;	/* Receive Register 1 */
+	u32 rr2;	/* Receive Register 2 */
+	u32 rr3;	/* Receive Register 3 */
+	u32 reserved;
+	u32 is1l;	/* Input Select 1 16..31 */
+	u32 is1h;	/* Input Select 1 0..15 */
+	u32 is2l;	/* Input Select 2 16..31 */
+	u32 is2h;	/* Input Select 2 0..15 */
+	u32 is3l;	/* Input Select 3 16..31 */
+	u32 is3h;	/* Input Select 3 0..15 */
+};
+
+/* Offsets */
+#define GPIOx_OR	0x00		/* GPIO Output Register */
+#define GPIOx_TCR	0x04		/* GPIO Three-State Control Register */
+#define GPIOx_OSL	0x08		/* GPIO Output Select Register (Bits 0-31) */
+#define GPIOx_OSH	0x0C		/* GPIO Ouput Select Register (Bits 32-63) */
+#define GPIOx_TSL	0x10		/* GPIO Three-State Select Register (Bits 0-31) */
+#define GPIOx_TSH	0x14		/* GPIO Three-State Select Register  (Bits 32-63) */
+#define GPIOx_ODR	0x18		/* GPIO Open drain Register */
+#define GPIOx_IR	0x1C		/* GPIO Input Register */
+#define GPIOx_RR1	0x20		/* GPIO Receive Register 1 */
+#define GPIOx_RR2	0x24		/* GPIO Receive Register 2 */
+#define GPIOx_RR3	0x28		/* GPIO Receive Register 3 */
+#define GPIOx_IS1L	0x30		/* GPIO Input Select Register 1 (Bits 0-31) */
+#define GPIOx_IS1H	0x34		/* GPIO Input Select Register 1 (Bits 32-63) */
+#define GPIOx_IS2L	0x38		/* GPIO Input Select Register 2 (Bits 0-31) */
+#define GPIOx_IS2H	0x3C		/* GPIO Input Select Register 2 (Bits 32-63) */
+#define GPIOx_IS3L	0x40		/* GPIO Input Select Register 3 (Bits 0-31) */
+#define GPIOx_IS3H	0x44		/* GPIO Input Select Register 3 (Bits 32-63) */
+
+#define GPIO_OR(x)	(x+GPIOx_OR)	/* GPIO Output Register */
+#define GPIO_TCR(x)	(x+GPIOx_TCR)	/* GPIO Three-State Control Register */
+#define GPIO_OS(x)	(x+GPIOx_OSL)	/* GPIO Output Select Register High or Low */
+#define GPIO_TS(x)	(x+GPIOx_TSL)	/* GPIO Three-state Control Reg High or Low */
+#define GPIO_IS1(x)	(x+GPIOx_IS1L)	/* GPIO Input register1 High or Low */
+#define GPIO_IS2(x)	(x+GPIOx_IS2L)	/* GPIO Input register2 High or Low */
+#define GPIO_IS3(x)	(x+GPIOx_IS3L)	/* GPIO Input register3 High or Low */
+
+#define GPIO0		0
+#define GPIO1		1
+
+#define GPIO_MAX	32
+#define GPIO_ALT1_SEL	0x40000000
+#define GPIO_ALT2_SEL	0x80000000
+#define GPIO_ALT3_SEL	0xc0000000
+#define GPIO_IN_SEL	0x40000000
+#define GPIO_MASK	0xc0000000
+
+#define GPIO_VAL(gpio)	(0x80000000 >> (gpio))
+
+#ifndef __ASSEMBLY__
+typedef enum gpio_select { GPIO_SEL, GPIO_ALT1, GPIO_ALT2, GPIO_ALT3 } gpio_select_t;
+typedef enum gpio_driver { GPIO_DIS, GPIO_IN, GPIO_OUT, GPIO_BI } gpio_driver_t;
+typedef enum gpio_out	 { GPIO_OUT_0, GPIO_OUT_1, GPIO_OUT_NO_CHG } gpio_out_t;
+
+typedef struct {
+	unsigned long	add;	/* gpio core base address	*/
+	gpio_driver_t	in_out;	/* Driver Setting		*/
+	gpio_select_t	alt_nb;	/* Selected Alternate		*/
+	gpio_out_t	out_val;/* Default Output Value		*/
+} gpio_param_s;
+#endif
+
+void gpio_config(int pin, int in_out, int gpio_alt, int out_val);
+void gpio_write_bit(int pin, int val);
+int gpio_read_out_bit(int pin);
+int gpio_read_in_bit(int pin);
+void gpio_set_chip_configuration(void);
+
+#endif /* __ASM_PPC_GPIO_H */