This patch adds Au1x00 specific GPIO wrappers to the GPIO API. It also removes the exported symbols that are not used anywhere else. -- Signed-off-by: Florian Fainelli <florian@xxxxxxxxxxxxx>
diff -urN linux-2.6.21.1/arch/mips/au1000/common/gpio.c linux-2.6.21.1.new/arch/mips/au1000/common/gpio.c
--- linux-2.6.21.1/arch/mips/au1000/common/gpio.c 2007-04-27 23:49:26.000000000 +0200
+++ linux-2.6.21.1.new/arch/mips/au1000/common/gpio.c 2007-05-19 21:34:38.000000000 +0200
@@ -1,4 +1,7 @@
/*
+ * Copyright (C) 2007, OpenWrt.org, Florian Fainelli <florian@xxxxxxxxxxx>
+ * 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 +21,77 @@
* 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/autoconf.h>
+#include <linux/init.h>
+#include <linux/types.h>
#include <linux/module.h>
-#include <au1000.h>
-#include <au1xxx_gpio.h>
+
+#include <asm/addrspace.h>
+#include <asm/io.h>
+
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1xxx_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
-#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);
}
+#endif /* !defined(CONFIG_SOC_AU1000) */
-void au1xxx_gpio2_tristate(int signal)
+static int au1xxx_gpio1_read(unsigned gpio)
{
- signal -= 200;
- gpio2->dir &= ~(0x01 << signal); /* Set GPIO to input */
+ return ((gpio1->pinstaterd >> gpio) & 0x01);
}
-#endif
-int au1xxx_gpio1_read(int signal)
-{
-/* gpio1->trioutclr |= (0x01 << signal); */
- return ((gpio1->pinstaterd >> signal) & 0x01);
-}
-
-void au1xxx_gpio1_write(int signal, int value)
+static void au1xxx_gpio1_write(unsigned gpio, int value)
{
if(value)
- gpio1->outputset = (0x01 << signal);
+ gpio1->outputset = (0x01 << gpio);
else
- gpio1->outputclr = (0x01 << signal); /* Output a Zero */
-}
-
-void au1xxx_gpio1_tristate(int signal)
-{
- gpio1->trioutclr = (0x01 << signal); /* Tristate signal */
+ /* Output a zero */
+ gpio1->outputclr = (0x01 << gpio);
}
-
-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)
+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)
-{
- if(signal >= 200)
-#if defined(CONFIG_SOC_AU1000)
- ;
-#else
- au1xxx_gpio2_tristate(signal);
-#endif
- else
- au1xxx_gpio1_tristate(signal);
-}
-
-void au1xxx_gpio1_set_inputs(void)
-{
- gpio1->pininputen = 0;
-}
-
-EXPORT_SYMBOL(au1xxx_gpio1_set_inputs);
-EXPORT_SYMBOL(au1xxx_gpio_tristate);
-EXPORT_SYMBOL(au1xxx_gpio_write);
-EXPORT_SYMBOL(au1xxx_gpio_read);
diff -urN linux-2.6.21.1/include/asm-mips/mach-au1x00/au1xxx_gpio.h linux-2.6.21.1.new/include/asm-mips/mach-au1x00/au1xxx_gpio.h
--- linux-2.6.21.1/include/asm-mips/mach-au1x00/au1xxx_gpio.h 2007-04-27 23:49:26.000000000 +0200
+++ linux-2.6.21.1.new/include/asm-mips/mach-au1x00/au1xxx_gpio.h 2007-05-19 21:34:27.000000000 +0200
@@ -1,10 +1,7 @@
-#ifndef __AU1XXX_GPIO_H
-#define __AU1XXX_GPIO_H
+#ifndef _AU1XXX_GPIO_H_
+#define _AU1XXX_GPIO_H_
-void au1xxx_gpio1_set_inputs(void);
-void au1xxx_gpio_tristate(int signal);
-void au1xxx_gpio_write(int signal, int value);
-int au1xxx_gpio_read(int signal);
+#define AU1XXX_GPIO_BASE 200
typedef volatile struct
{
@@ -17,4 +14,47 @@
} AU1X00_GPIO2;
-#endif //__AU1XXX_GPIO_H
+extern int au1xxx_gpio_get_value(unsigned gpio);
+extern void au1xxx_gpio_set_value(unsigned gpio, int value);
+
+
+/* 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 */
+}
+
+extern int gpio_direction_input(unsigned gpio);
+extern int gpio_direction_output(unsigned gpio, int value);
+
+static inline int gpio_get_value(unsigned gpio)
+{
+ return au1xxx_gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned gpio, int value)
+{
+ au1xxx_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 /* _AU1XXX_GPIO_H_ */
Attachment:
pgptsakxtJSbL.pgp
Description: PGP signature
