[PATCH] Add 4xx GPIO functions

This patch adds some 4xx GPIO functions. It also moves some of the
common code and defines into a common 4xx GPIO header file.

Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 56 insertions, 0 deletions

diff --git a/include/asm-ppc/gpio.h b/include/asm-ppc/gpio.h
new file mode 100644
index 0000000..114dc92
--- /dev/null
+++ b/include/asm-ppc/gpio.h
@@ -0,0 +1,56 @@
+/*
+ * (C) Copyright 2007
+ * 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
+ */
+
+/* 4xx PPC's have 2 GPIO controllers */
+#if defined(CONFIG_405EZ) ||					\
+	defined(CONFIG_440EP) || defined(CONFIG_440GR) ||	\
+	defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+#define GPIO_GROUP_MAX	2
+#else
+#define GPIO_GROUP_MAX	1
+#endif
+
+#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_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);
+void gpio_set_chip_configuration(void);