[MIPS] Routerboard 532: Support for base system

Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 126 insertions, 0 deletions

diff --git a/include/asm-mips/mach-rc32434/gpio.h b/include/asm-mips/mach-rc32434/gpio.h
new file mode 100644
index 000000000000..f946f5f45bbb
--- /dev/null
+++ b/include/asm-mips/mach-rc32434/gpio.h
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2002 Integrated Device Technology, Inc.
+ *      All rights reserved.
+ *
+ * GPIO register definition.
+ *
+ * Author : ryan.holmQVist@idt.com
+ * Date   : 20011005
+ * Copyright (C) 2001, 2002 Ryan Holm <ryan.holmQVist@idt.com>
+ * Copyright (C) 2008 Florian Fainelli <florian@openwrt.org>
+ */
+
+#ifndef _RC32434_GPIO_H_
+#define _RC32434_GPIO_H_
+
+#include <linux/types.h>
+
+struct rb532_gpio_reg {
+        u32   gpiofunc;   /* GPIO Function Register
+                           * gpiofunc[x]==0 bit = gpio
+                           * func[x]==1  bit = altfunc
+                           */
+        u32   gpiocfg;    /* GPIO Configuration Register
+                           * gpiocfg[x]==0 bit = input
+                           * gpiocfg[x]==1 bit = output
+                           */
+        u32   gpiod;      /* GPIO Data Register
+                           * gpiod[x] read/write gpio pinX status
+                           */
+        u32   gpioilevel; /* GPIO Interrupt Status Register
+                           * interrupt level (see gpioistat)
+                           */
+        u32   gpioistat;  /* Gpio Interrupt Status Register
+                           * istat[x] = (gpiod[x] == level[x])
+                           * cleared in ISR (STICKY bits)
+                           */
+        u32   gpionmien;  /* GPIO Non-maskable Interrupt Enable Register */
+};
+
+/* UART GPIO signals */
+#define RC32434_UART0_SOUT      (1 << 0)
+#define RC32434_UART0_SIN       (1 << 1)
+#define RC32434_UART0_RTS       (1 << 2)
+#define RC32434_UART0_CTS       (1 << 3)
+
+/* M & P bus GPIO signals */
+#define RC32434_MP_BIT_22       (1 << 4)
+#define RC32434_MP_BIT_23       (1 << 5)
+#define RC32434_MP_BIT_24       (1 << 6)
+#define RC32434_MP_BIT_25       (1 << 7)
+
+/* CPU GPIO signals */
+#define RC32434_CPU_GPIO        (1 << 8)
+
+/* Reserved GPIO signals */
+#define RC32434_AF_SPARE_6      (1 << 9)
+#define RC32434_AF_SPARE_4      (1 << 10)
+#define RC32434_AF_SPARE_3      (1 << 11)
+#define RC32434_AF_SPARE_2      (1 << 12)
+
+/* PCI messaging unit */
+#define RC32434_PCI_MSU_GPIO    (1 << 13)
+
+
+extern void set_434_reg(unsigned reg_offs, unsigned bit, unsigned len, unsigned val);
+extern unsigned get_434_reg(unsigned reg_offs);
+extern void set_latch_u5(unsigned char or_mask, unsigned char nand_mask);
+extern unsigned char get_latch_u5(void);
+
+extern int rb532_gpio_get_value(unsigned gpio);
+extern void rb532_gpio_set_value(unsigned gpio, int value);
+extern int rb532_gpio_direction_input(unsigned gpio);
+extern int rb532_gpio_direction_output(unsigned gpio, int value);
+extern void rb532_gpio_set_int_level(unsigned gpio, int value);
+extern int rb532_gpio_get_int_level(unsigned gpio);
+extern void rb532_gpio_set_int_status(unsigned gpio, int value);
+extern int rb532_gpio_get_int_status(unsigned gpio);
+
+
+/* Wrappers for the arch-neutral GPIO API */
+
+static inline int gpio_request(unsigned gpio, const char *label)
+{
+        /* Not yet implemented */
+        return 0;
+}
+
+static inline void gpio_free(unsigned gpio)
+{
+        /* Not yet implemented */
+}
+
+static inline int gpio_direction_input(unsigned gpio)
+{
+        return rb532_gpio_direction_input(gpio);
+}
+
+static inline int gpio_direction_output(unsigned gpio, int value)
+{
+        return rb532_gpio_direction_output(gpio, value);
+}
+
+static inline int gpio_get_value(unsigned gpio)
+{
+        return rb532_gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned gpio, int value)
+{
+        rb532_gpio_set_value(gpio, value);
+}
+
+static inline int gpio_to_irq(unsigned gpio)
+{
+        return gpio;
+}
+
+static inline int irq_to_gpio(unsigned irq)
+{
+        return irq;
+}
+
+/* For cansleep */
+#include <asm-generic/gpio.h>
+
+#endif /* _RC32434_GPIO_H_ */