add generic GPIO to MIPS boards, use it for au1000 and for the MTX-1 led driver as well

SVN-Revision: 7334
master
Florian Fainelli 18 years ago
parent 46f7d89f9c
commit 3368856944
  1. 72
      target/linux/au1000-2.6/config/default
  2. 31
      target/linux/au1000-2.6/files/drivers/leds/leds-mtx1.c
  3. 294
      target/linux/au1000-2.6/patches/001-au1x00_gpio.patch
  4. 32
      target/linux/generic-2.6/patches/013-mips_generic_gpio_support.patch

@ -2,10 +2,13 @@ CONFIG_32BIT=y
# CONFIG_64BIT is not set # CONFIG_64BIT is not set
CONFIG_64BIT_PHYS_ADDR=y CONFIG_64BIT_PHYS_ADDR=y
# CONFIG_8139TOO is not set # CONFIG_8139TOO is not set
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set
# CONFIG_ATM is not set # CONFIG_ATM is not set
# CONFIG_B44 is not set # CONFIG_B44 is not set
CONFIG_BASE_SMALL=0 CONFIG_BASE_SMALL=0
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set CONFIG_BITREVERSE=y
# CONFIG_BROADCOM_PHY is not set
CONFIG_CHR_DEV_SG=m CONFIG_CHR_DEV_SG=m
CONFIG_CMDLINE="root=/dev/mtdblock0 rootfstype=jffs2 init=/etc/preinit" CONFIG_CMDLINE="root=/dev/mtdblock0 rootfstype=jffs2 init=/etc/preinit"
# CONFIG_CPU_BIG_ENDIAN is not set # CONFIG_CPU_BIG_ENDIAN is not set
@ -45,12 +48,15 @@ CONFIG_DMA_NONCOHERENT=y
CONFIG_DUMMY=m CONFIG_DUMMY=m
CONFIG_ELF_CORE=y CONFIG_ELF_CORE=y
# CONFIG_ENABLE_MUST_CHECK is not set # CONFIG_ENABLE_MUST_CHECK is not set
# CONFIG_FIRMWARE_EDID is not set
# CONFIG_FIXED_PHY is not set # CONFIG_FIXED_PHY is not set
CONFIG_FS_POSIX_ACL=y CONFIG_FS_POSIX_ACL=y
CONFIG_GENERIC_FIND_NEXT_BIT=y CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_GENERIC_GPIO=y
# CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ is not set
# CONFIG_GEN_RTC is not set # CONFIG_GEN_RTC is not set
# CONFIG_HAMRADIO is not set # CONFIG_HAMRADIO is not set
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HW_HAS_PCI=y CONFIG_HW_HAS_PCI=y
CONFIG_HW_RANDOM=y CONFIG_HW_RANDOM=y
CONFIG_HZ=250 CONFIG_HZ=250
@ -64,44 +70,17 @@ CONFIG_I2C=m
CONFIG_I2C_ALGOBIT=m CONFIG_I2C_ALGOBIT=m
CONFIG_I2C_ALGOPCA=m CONFIG_I2C_ALGOPCA=m
CONFIG_I2C_ALGOPCF=m CONFIG_I2C_ALGOPCF=m
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
# CONFIG_I2C_AMD756 is not set
# CONFIG_I2C_AMD8111 is not set
CONFIG_I2C_AU1X00GPIO=m CONFIG_I2C_AU1X00GPIO=m
CONFIG_I2C_CHARDEV=m CONFIG_I2C_CHARDEV=m
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# CONFIG_I2C_DEBUG_CHIP is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_I810 is not set
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_PCA_ISA is not set
# CONFIG_I2C_PIIX4 is not set
# CONFIG_I2C_PROSAVAGE is not set
# CONFIG_I2C_SAVAGE4 is not set
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
# CONFIG_I2C_SIS96X is not set
# CONFIG_I2C_STUB is not set
# CONFIG_I2C_VIA is not set
# CONFIG_I2C_VIAPRO is not set
# CONFIG_I2C_VOODOO3 is not set
# CONFIG_IDE is not set # CONFIG_IDE is not set
CONFIG_INITRAMFS_SOURCE="" CONFIG_INITRAMFS_SOURCE=""
CONFIG_JFFS2_FS_DEBUG=0 CONFIG_JFFS2_FS_DEBUG=0
# CONFIG_LAN_SAA9730 is not set
CONFIG_LEDS_MTX1=y CONFIG_LEDS_MTX1=y
# CONFIG_LEDS_TRIGGERS is not set # CONFIG_LEDS_TRIGGERS is not set
# CONFIG_MACH_DECSTATION is not set # CONFIG_MACH_DECSTATION is not set
# CONFIG_MACH_JAZZ is not set # CONFIG_MACH_JAZZ is not set
# CONFIG_MACH_VR41XX is not set # CONFIG_MACH_VR41XX is not set
CONFIG_MAGIC_SYSRQ=y CONFIG_MAGIC_SYSRQ=y
CONFIG_MINI_FO=y
CONFIG_MIPS=y CONFIG_MIPS=y
# CONFIG_MIPS_ATLAS is not set # CONFIG_MIPS_ATLAS is not set
CONFIG_MIPS_AU1X00_ENET=y CONFIG_MIPS_AU1X00_ENET=y
@ -138,6 +117,7 @@ CONFIG_MODULE_FORCE_UNLOAD=y
CONFIG_MTD=y CONFIG_MTD=y
# CONFIG_MTD_ABSENT is not set # CONFIG_MTD_ABSENT is not set
# CONFIG_MTD_ALCHEMY is not set # CONFIG_MTD_ALCHEMY is not set
CONFIG_MTD_BLKDEVS=y
CONFIG_MTD_BLOCK=y CONFIG_MTD_BLOCK=y
# CONFIG_MTD_BLOCK2MTD is not set # CONFIG_MTD_BLOCK2MTD is not set
CONFIG_MTD_CFI=y CONFIG_MTD_CFI=y
@ -182,33 +162,38 @@ CONFIG_MTD_PARTITIONS=y
CONFIG_MTX1_WATCHDOG=y CONFIG_MTX1_WATCHDOG=y
# CONFIG_NATSEMI is not set # CONFIG_NATSEMI is not set
# CONFIG_NE2K_PCI is not set # CONFIG_NE2K_PCI is not set
CONFIG_NET_SCH_FIFO=y
# CONFIG_NET_VENDOR_3COM is not set # CONFIG_NET_VENDOR_3COM is not set
CONFIG_NF_CONNTRACK=y
CONFIG_NF_CONNTRACK_MARK=y
CONFIG_NF_CT_ACCT=y
# CONFIG_NF_NAT_AMANDA is not set
CONFIG_NF_NAT_FTP=m
CONFIG_NF_NAT_H323=m
CONFIG_NF_NAT_IRC=m
CONFIG_NF_NAT_NEEDED=y
# CONFIG_NF_NAT_PPTP is not set
CONFIG_NF_NAT_SIP=m
# CONFIG_NF_NAT_TFTP is not set
# CONFIG_PAGE_SIZE_16KB is not set # CONFIG_PAGE_SIZE_16KB is not set
CONFIG_PAGE_SIZE_4KB=y CONFIG_PAGE_SIZE_4KB=y
# CONFIG_PAGE_SIZE_64KB is not set # CONFIG_PAGE_SIZE_64KB is not set
# CONFIG_PAGE_SIZE_8KB is not set # CONFIG_PAGE_SIZE_8KB is not set
# CONFIG_PCCARD is not set
# CONFIG_PCIPCWATCHDOG is not set # CONFIG_PCIPCWATCHDOG is not set
CONFIG_PHYLIB=y CONFIG_PHYLIB=y
# CONFIG_PM is not set
# CONFIG_PMC_YOSEMITE is not set # CONFIG_PMC_YOSEMITE is not set
# CONFIG_PNPACPI is not set
# CONFIG_PNX8550_JBS is not set # CONFIG_PNX8550_JBS is not set
# CONFIG_PNX8550_V2PCI is not set # CONFIG_PNX8550_STB810 is not set
# CONFIG_PPP_MPPE is not set # CONFIG_PPP_MPPE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_QSEMI_PHY is not set # CONFIG_QSEMI_PHY is not set
CONFIG_RESOURCES_64BIT=y
# CONFIG_RTC is not set # CONFIG_RTC is not set
CONFIG_RWSEM_GENERIC_SPINLOCK=y CONFIG_RWSEM_GENERIC_SPINLOCK=y
CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
CONFIG_SCSI_CONSTANTS=y CONFIG_SCSI_CONSTANTS=y
# CONFIG_SCSI_PROC_FS is not set # CONFIG_SCSI_PROC_FS is not set
# CONFIG_SENSORS_DS1337 is not set
# CONFIG_SENSORS_DS1374 is not set
# CONFIG_SENSORS_EEPROM is not set
# CONFIG_SENSORS_MAX6875 is not set
# CONFIG_SENSORS_PCA9539 is not set
# CONFIG_SENSORS_PCF8574 is not set
# CONFIG_SENSORS_PCF8591 is not set
CONFIG_SERIAL_8250_AU1X00=y CONFIG_SERIAL_8250_AU1X00=y
# CONFIG_SERIAL_8250_EXTENDED is not set # CONFIG_SERIAL_8250_EXTENDED is not set
CONFIG_SERIAL_8250_NR_UARTS=4 CONFIG_SERIAL_8250_NR_UARTS=4
@ -235,10 +220,12 @@ CONFIG_SOFT_WATCHDOG=m
# CONFIG_SPARSEMEM_STATIC is not set # CONFIG_SPARSEMEM_STATIC is not set
# CONFIG_STANDALONE is not set # CONFIG_STANDALONE is not set
CONFIG_STRIP=m CONFIG_STRIP=m
CONFIG_SYN_COOKIES=y CONFIG_SYSVIPC_SYSCTL=y
CONFIG_SYS_HAS_CPU_MIPS32_R1=y CONFIG_SYS_HAS_CPU_MIPS32_R1=y
CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_SYS_SUPPORTS_ARBIT_HZ=y CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
CONFIG_SYS_SUPPORTS_KGDB=y
CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
# CONFIG_TMD_HERMES is not set # CONFIG_TMD_HERMES is not set
# CONFIG_TOSHIBA_JMR3927 is not set # CONFIG_TOSHIBA_JMR3927 is not set
@ -247,10 +234,15 @@ CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
CONFIG_TRAD_SIGNALS=y CONFIG_TRAD_SIGNALS=y
# CONFIG_UNUSED_SYMBOLS is not set # CONFIG_UNUSED_SYMBOLS is not set
# CONFIG_USBPCWATCHDOG is not set # CONFIG_USBPCWATCHDOG is not set
# CONFIG_USB_EHCI_BIG_ENDIAN_MMIO is not set
CONFIG_USB_EHCI_HCD=m CONFIG_USB_EHCI_HCD=m
# CONFIG_USB_EHCI_ROOT_HUB_TT is not set # CONFIG_USB_EHCI_ROOT_HUB_TT is not set
# CONFIG_USB_EHCI_SPLIT_ISO is not set # CONFIG_USB_EHCI_SPLIT_ISO is not set
# CONFIG_USB_EHCI_TT_NEWSCHED is not set # CONFIG_USB_EHCI_TT_NEWSCHED is not set
# CONFIG_USB_OHCI_BIG_ENDIAN_DESC is not set
# CONFIG_USB_OHCI_BIG_ENDIAN_MMIO is not set
CONFIG_USB_OHCI_HCD=m CONFIG_USB_OHCI_HCD=m
CONFIG_USB_UHCI_HCD=m CONFIG_USB_UHCI_HCD=m
# CONFIG_VIA_RHINE is not set # CONFIG_VIA_RHINE is not set
CONFIG_ZONE_DMA=y
CONFIG_ZONE_DMA_FLAG=1

@ -14,41 +14,26 @@
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/leds.h> #include <linux/leds.h>
#include <linux/err.h> #include <linux/err.h>
#include <asm/mach-au1x00/au1000.h> #include <asm/gpio.h>
static struct platform_device *pdev; static struct platform_device *pdev;
static void mtx1_green_led_set(struct led_classdev *led_cdev, enum led_brightness brightness) static void mtx1_led_set(struct led_classdev *led_cdev, enum led_brightness brightness)
{ {
/* The power LED cannot be controlled the same way as for the Status LED */ if (!strcmp("mtx1:green", led_cdev->name))
if (brightness) { gpio_set_value(211, brightness ? 1 : 0);
au_writel( 0x18000800, GPIO2_OUTPUT ); else
} else { gpio_set_value(212, brightness ? 1 : 0);
au_writel( 0x18000000, GPIO2_OUTPUT);
}
}
static void mtx1_red_led_set(struct led_classdev *led_cdev, enum led_brightness brightness)
{
/* We store GPIO address (originally address - 200) in the "flags" field*/
unsigned long pinmask = 1 << led_cdev->flags;
if (brightness) {
au_writel((pinmask << 16) | pinmask, GPIO2_OUTPUT);
} else {
au_writel((pinmask << 16) | 0, GPIO2_OUTPUT);
}
} }
static struct led_classdev mtx1_green_led = { static struct led_classdev mtx1_green_led = {
.name = "mtx1:green", .name = "mtx1:green",
.brightness_set = mtx1_green_led_set, .brightness_set = mtx1_led_set,
}; };
static struct led_classdev mtx1_red_led = { static struct led_classdev mtx1_red_led = {
.name = "mtx1:red", .name = "mtx1:red",
.flags = 12, .brightness_set = mtx1_led_set,
.brightness_set = mtx1_red_led_set,
.default_trigger = "ide-disk",
}; };
static int mtx1_leds_probe(struct platform_device *pdev) static int mtx1_leds_probe(struct platform_device *pdev)

@ -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_ */

@ -0,0 +1,32 @@
--- linux-2.6.21.1/arch/mips/Kconfig 2007-04-27 23:49:26.000000000 +0200
+++ linux-2.6.21.1-owrt/arch/mips/Kconfig 2007-05-24 13:51:13.000000000 +0200
@@ -869,6 +869,10 @@
bool
default y
+config GENERIC_GPIO
+ bool
+ default n
+
config SCHED_NO_NO_OMIT_FRAME_POINTER
bool
default y
--- linux-2.6.21.1/include/asm-mips/gpio.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.21.1-owrt/include/asm-mips/gpio.h 2007-05-24 13:51:13.000000000 +0200
@@ -0,0 +1,6 @@
+#ifndef _ASM_MIPS_GPIO_H
+#define _ASM_MIPS_GPIO_H
+
+#include <gpio.h>
+
+#endif /* _ASM_MIPS_GPIO_H */
--- linux-2.6.21.1/arch/mips/defconfig 2007-04-27 23:49:26.000000000 +0200
+++ linux-2.6.21.1-owrt/arch/mips/defconfig 2007-05-24 14:37:52.000000000 +0200
@@ -71,6 +71,7 @@
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_TIME=y
+CONFIG_GENERIC_GPIO=n
CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
# CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ is not set
CONFIG_ARC=y
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