Merge branches 'release', 'asus', 'sony-laptop' and 'thinkpad' into release

[pandora-kernel.git] / arch / mips / au1000 / common / gpio.c

diff --git a/arch/mips/au1000/common/gpio.c b/arch/mips/au1000/common/gpio.c
index ce55297..0b658f1 100644 (file)
--- a/arch/mips/au1000/common/gpio.c
+++ b/arch/mips/au1000/common/gpio.c
@@ -1,4 +1,7 @@
 /*
+ *  Copyright (C) 2007, OpenWrt.org, Florian Fainelli <florian@openwrt.org>
+ *     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
@@ -18,101 +21,135 @@
  *  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.,
  *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *  Notes :
+ *     au1000 SoC have only one GPIO line : GPIO1
+ *     others have a second one : GPIO2
  */
+
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/types.h>
 #include <linux/module.h>
-#include <au1000.h>
-#include <au1xxx_gpio.h>
+
+#include <asm/addrspace.h>
+
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/gpio.h>
 
 #define gpio1 sys
 #if !defined(CONFIG_SOC_AU1000)
-static AU1X00_GPIO2 * const gpio2 = (AU1X00_GPIO2 *)GPIO2_BASE;
 
-#define GPIO2_OUTPUT_ENABLE_MASK 0x00010000
+static struct au1x00_gpio2 *const gpio2 = (struct au1x00_gpio2 *) GPIO2_BASE;
+#define GPIO2_OUTPUT_ENABLE_MASK       0x00010000
 
-int au1xxx_gpio2_read(int signal)
+static int au1xxx_gpio2_read(unsigned gpio)
 {
-       signal -= 200;
-/*     gpio2->dir &= ~(0x01 << signal);                                                //Set GPIO to input */
-       return ((gpio2->pinstate >> signal) & 0x01);
+       gpio -= AU1XXX_GPIO_BASE;
+       return ((gpio2->pinstate >> gpio) & 0x01);
 }
 
-void au1xxx_gpio2_write(int signal, int value)
+static void au1xxx_gpio2_write(unsigned gpio, int value)
 {
-       signal -= 200;
+       gpio -= AU1XXX_GPIO_BASE;
 
-       gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << signal) |
-               (value << signal);
+       gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << gpio) | (value << gpio);
 }
 
-void au1xxx_gpio2_tristate(int signal)
+static int au1xxx_gpio2_direction_input(unsigned gpio)
 {
-       signal -= 200;
-       gpio2->dir &= ~(0x01 << signal);        /* Set GPIO to input */
+       gpio -= AU1XXX_GPIO_BASE;
+       gpio2->dir &= ~(0x01 << gpio);
+       return 0;
 }
-#endif
 
-int au1xxx_gpio1_read(int signal)
+static int au1xxx_gpio2_direction_output(unsigned gpio, int value)
 {
-/*     gpio1->trioutclr |= (0x01 << signal); */
-       return ((gpio1->pinstaterd >> signal) & 0x01);
+       gpio -= AU1XXX_GPIO_BASE;
+       gpio2->dir = (0x01 << gpio) | (value << gpio);
+       return 0;
 }
 
-void au1xxx_gpio1_write(int signal, int value)
+#endif /* !defined(CONFIG_SOC_AU1000) */
+
+static int au1xxx_gpio1_read(unsigned gpio)
 {
-       if(value)
-               gpio1->outputset = (0x01 << signal);
+       return ((gpio1->pinstaterd >> gpio) & 0x01);
+}
+
+static void au1xxx_gpio1_write(unsigned gpio, int value)
+{
+       if (value)
+               gpio1->outputset = (0x01 << gpio);
        else
-               gpio1->outputclr = (0x01 << signal);    /* Output a Zero */
+               /* Output a zero */
+               gpio1->outputclr = (0x01 << gpio);
 }
 
-void au1xxx_gpio1_tristate(int signal)
+static int au1xxx_gpio1_direction_input(unsigned gpio)
 {
-       gpio1->trioutclr = (0x01 << signal);            /* Tristate signal */
+       gpio1->pininputen = (0x01 << gpio);
+       return 0;
 }
 
+static int au1xxx_gpio1_direction_output(unsigned gpio, int value)
+{
+       gpio1->trioutclr = (0x01 & gpio);
+       return 0;
+}
 
-int au1xxx_gpio_read(int signal)
+int au1xxx_gpio_get_value(unsigned gpio)
 {
-       if(signal >= 200)
+       if (gpio >= AU1XXX_GPIO_BASE)
 #if defined(CONFIG_SOC_AU1000)
                return 0;
 #else
-               return au1xxx_gpio2_read(signal);
+               return au1xxx_gpio2_read(gpio);
 #endif
        else
-               return au1xxx_gpio1_read(signal);
+               return au1xxx_gpio1_read(gpio);
 }
 
-void au1xxx_gpio_write(int signal, int value)
+EXPORT_SYMBOL(au1xxx_gpio_get_value);
+
+void au1xxx_gpio_set_value(unsigned gpio, int value)
 {
-       if(signal >= 200)
+       if (gpio >= AU1XXX_GPIO_BASE)
 #if defined(CONFIG_SOC_AU1000)
                ;
 #else
-               au1xxx_gpio2_write(signal, value);
+               au1xxx_gpio2_write(gpio, value);
 #endif
        else
-               au1xxx_gpio1_write(signal, value);
+               au1xxx_gpio1_write(gpio, value);
 }
 
-void au1xxx_gpio_tristate(int signal)
+EXPORT_SYMBOL(au1xxx_gpio_set_value);
+
+int au1xxx_gpio_direction_input(unsigned gpio)
 {
-       if(signal >= 200)
+       if (gpio >= AU1XXX_GPIO_BASE)
 #if defined(CONFIG_SOC_AU1000)
-               ;
+               return -ENODEV;
 #else
-               au1xxx_gpio2_tristate(signal);
+               return au1xxx_gpio2_direction_input(gpio);
 #endif
-       else
-               au1xxx_gpio1_tristate(signal);
+
+       return au1xxx_gpio1_direction_input(gpio);
 }
 
-void au1xxx_gpio1_set_inputs(void)
+EXPORT_SYMBOL(au1xxx_gpio_direction_input);
+
+int au1xxx_gpio_direction_output(unsigned gpio, int value)
 {
-       gpio1->pininputen = 0;
+       if (gpio >= AU1XXX_GPIO_BASE)
+#if defined(CONFIG_SOC_AU1000)
+               return -ENODEV;
+#else
+               return au1xxx_gpio2_direction_output(gpio, value);
+#endif
+
+       return au1xxx_gpio1_direction_output(gpio, value);
 }
 
-EXPORT_SYMBOL(au1xxx_gpio1_set_inputs);
-EXPORT_SYMBOL(au1xxx_gpio_tristate);
-EXPORT_SYMBOL(au1xxx_gpio_write);
-EXPORT_SYMBOL(au1xxx_gpio_read);
+EXPORT_SYMBOL(au1xxx_gpio_direction_output);