diff options
Diffstat (limited to 'target/linux/au1000/patches/001-au1x00_gpio.patch')
| -rw-r--r-- | target/linux/au1000/patches/001-au1x00_gpio.patch | 294 |
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 0000000000..d4339aec46 --- /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_ */ |