Add generic gpio support to rdc, convert the led driver to be a platform driver,...

[openwrt-10.03/.git] / target / linux / rdc-2.6 / files / arch / i386 / mach-rdc / gpio.c

diff --git a/target/linux/rdc-2.6/files/arch/i386/mach-rdc/gpio.c b/target/linux/rdc-2.6/files/arch/i386/mach-rdc/gpio.c
new file mode 100644 (file)
index 0000000..eadb152
--- /dev/null
+++ b/target/linux/rdc-2.6/files/arch/i386/mach-rdc/gpio.c
@@ -0,0 +1,81 @@
+/*
+ *  Copyright (C) 2007, OpenWrt.org, Florian Fainelli <florian@openwrt.org>
+ *     RDC321x architecture specific GPIO support
+ *
+ *  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.
+ */
+
+#include <linux/autoconf.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+
+#define RDC3210_CFGREG_ADDR     0x0CF8
+#define RDC3210_CFGREG_DATA     0x0CFC
+
+static unsigned int rdc_gpio_read(unsigned gpio)
+{
+       unsigned int val;
+
+       val = 0x80000000 | (7 << 11) | ((0x48));
+        outl(val, RDC3210_CFGREG_ADDR);
+        udelay(10);
+        val = inl(RDC3210_CFGREG_DATA);
+        val |= (0x1 << gpio);
+        outl(val, RDC3210_CFGREG_DATA);
+        udelay(10);
+        val = 0x80000000 | (7 << 11) | ((0x4C));
+        outl(val, RDC3210_CFGREG_ADDR);
+        udelay(10);
+        val = inl(RDC3210_CFGREG_DATA);
+
+       return val;
+}
+
+void rdc_gpio_write(unsigned int val)
+{
+       if (val) {
+               outl(val, RDC3210_CFGREG_DATA);
+               udelay(10);
+       }
+}
+
+int rdc_gpio_get_value(unsigned gpio)
+{
+       return ((int)rdc_gpio_read(gpio));
+}
+EXPORT_SYMBOL(rdc_gpio_get_value);
+
+void rdc_gpio_set_value(unsigned gpio, int value)
+{
+       unsigned int val;
+
+       val = rdc_gpio_read(gpio);
+
+       if (value)
+               val &= ~(0x1 << gpio);
+       else
+               val |= (0x1 << gpio);
+
+       rdc_gpio_write(val);
+}
+EXPORT_SYMBOL(rdc_gpio_set_value);
+
+int rdc_gpio_direction_input(unsigned gpio)
+{
+       return 0;
+}
+EXPORT_SYMBOL(rdc_gpio_direction_input);
+
+int rdc_gpio_direction_output(unsigned gpio, int value)
+{
+       return 0;
+}
+EXPORT_SYMBOL(rdc_gpio_direction_output);
+
+