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Diffstat (limited to 'target/linux/au1000/patches/001-au1x00_gpio.patch')
-rw-r--r--target/linux/au1000/patches/001-au1x00_gpio.patch294
1 files changed, 294 insertions, 0 deletions
diff --git a/target/linux/au1000/patches/001-au1x00_gpio.patch b/target/linux/au1000/patches/001-au1x00_gpio.patch
new file mode 100644
index 0000000..d4339ae
--- /dev/null
+++ b/target/linux/au1000/patches/001-au1x00_gpio.patch
@@ -0,0 +1,294 @@
+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 2007-05-22 21:41:55.000000000 +0200
+@@ -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 +21,133 @@
+ * 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/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);
+ }
+
+-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)
++{
++ gpio -= AU1XXX_GPIO_BASE;
++ gpio2->dir = (0x01 << gpio) | (value << gpio);
++ return 0;
++}
++
++#endif /* !defined(CONFIG_SOC_AU1000) */
++
++static int au1xxx_gpio1_read(unsigned gpio)
+ {
+-/* gpio1->trioutclr |= (0x01 << signal); */
+- return ((gpio1->pinstaterd >> signal) & 0x01);
++ return ((gpio1->pinstaterd >> gpio) & 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 */
++ /* 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)
++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)
++int au1xxx_gpio_direction_input(unsigned gpio)
+ {
+- if(signal >= 200)
++ if (gpio >= AU1XXX_GPIO_BASE)
+ #if defined(CONFIG_SOC_AU1000)
+ ;
+ #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)
++int au1xxx_gpio_direction_output(unsigned gpio, int value)
+ {
+- gpio1->pininputen = 0;
++ if (gpio >= AU1XXX_GPIO_BASE)
++#if defined(CONFIG_SOC_AU1000)
++ ;
++#else
++ return au1xxx_gpio2_direction_output(gpio, value);
++#endif
++ else
++ 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);
++EXPORT_SYMBOL(au1xxx_gpio_direction_input);
++EXPORT_SYMBOL(au1xxx_gpio_get_value);
++EXPORT_SYMBOL(au1xxx_gpio_set_value);
+--- linux-2.6.21.1/arch/mips/Kconfig 2007-04-27 23:49:26.000000000 +0200
++++ linux-2.6.21.1.new/arch/mips/Kconfig 2007-05-21 08:04:42.000000000 +0200
+@@ -1044,6 +1044,7 @@
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select SYS_SUPPORTS_APM_EMULATION
+ select SYS_SUPPORTS_KGDB
++ select GENERIC_GPIO
+
+ config PNX8550
+ bool
+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 1970-01-01 01:00:00.000000000 +0100
+@@ -1,20 +0,0 @@
+-#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);
+-
+-typedef volatile struct
+-{
+- u32 dir;
+- u32 reserved;
+- u32 output;
+- u32 pinstate;
+- u32 inten;
+- u32 enable;
+-
+-} AU1X00_GPIO2;
+-
+-#endif //__AU1XXX_GPIO_H
+diff -urN linux-2.6.21.1/include/asm-mips/mach-au1x00/gpio.h linux-2.6.21.1.new/include/asm-mips/mach-au1x00/gpio.h
+--- linux-2.6.21.1/include/asm-mips/mach-au1x00/gpio.h 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.21.1.new/include/asm-mips/mach-au1x00/gpio.h 2007-05-21 01:10:22.000000000 +0200
+@@ -0,0 +1,69 @@
++#ifndef _AU1XXX_GPIO_H_
++#define _AU1XXX_GPIO_H_
++
++#define AU1XXX_GPIO_BASE 200
++
++typedef volatile struct
++{
++ u32 dir;
++ u32 reserved;
++ u32 output;
++ u32 pinstate;
++ u32 inten;
++ u32 enable;
++
++} AU1X00_GPIO2;
++
++extern int au1xxx_gpio_get_value(unsigned gpio);
++extern void au1xxx_gpio_set_value(unsigned gpio, int value);
++extern int au1xxx_gpio_direction_input(unsigned gpio);
++extern int au1xxx_gpio_direction_output(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 */
++}
++
++static inline int gpio_direction_input(unsigned gpio)
++{
++ return au1xxx_gpio_direction_input(gpio);
++}
++
++static inline int gpio_direction_output(unsigned gpio, int value)
++{
++ return au1xxx_gpio_direction_output(gpio, 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_ */