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Code

add gpio support to atheros, fixes #1861, thanks Othello

Browse Source 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10724 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
blogic 2008-04-03 20:28:10 +00:00
parent 19910c310a
commit 66b7ecf8e0
18 changed files with 532 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
package/gpioctl/Makefile
View File

@ -19,7 +19,7 @@ define Package/gpioctl
SECTION:=utils
CATEGORY:=Utilities
TITLE:=Tool for controlling gpio pins
DEPENDS:=@LINUX_2_6&&(@TARGET_ixp4xx||@TARGET_brcm47xx)
DEPENDS:=@LINUX_2_6&&(@TARGET_ixp4xx||@TARGET_brcm47xx||@TARGET_atheros)
endef
define Package/gpioctl/description

3
target/linux/atheros/config-2.6.23
View File

@ -50,6 +50,7 @@ CONFIG_DMA_NONCOHERENT=y
CONFIG_FS_POSIX_ACL=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
# CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ is not set
CONFIG_GPIO_DEVICE=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
@ -127,10 +128,10 @@ CONFIG_MTD_PHYSMAP_START=0x0
CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK=-3
CONFIG_MTD_REDBOOT_PARTS=y
CONFIG_MTD_REDBOOT_PARTS_READONLY=y
# CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED is not set
# CONFIG_MTD_ROM is not set
# CONFIG_MTD_SLRAM is not set
CONFIG_MTD_SPIFLASH=y
CONFIG_NEW_GPIO=y
# CONFIG_NO_IOPORT is not set
# CONFIG_PAGE_SIZE_16KB is not set
CONFIG_PAGE_SIZE_4KB=y

2
target/linux/atheros/config-2.6.24
View File

@ -194,3 +194,5 @@ CONFIG_TRAD_SIGNALS=y
# CONFIG_USER_NS is not set
# CONFIG_VGASTATE is not set
CONFIG_ZONE_DMA_FLAG=0
CONFIG_NEW_GPIO=y
CONFIG_GPIO_DEVICE=y

2
target/linux/atheros/files/arch/mips/atheros/Makefile
View File

@ -8,6 +8,6 @@
# Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
#
obj-y += board.o prom.o reset.o
obj-y += board.o prom.o reset.o gpio.o
obj-$(CONFIG_ATHEROS_AR5312) += ar5312/
obj-$(CONFIG_ATHEROS_AR5315) += ar5315/

2
target/linux/atheros/files/arch/mips/atheros/ar5312/board.c
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@ -27,7 +27,7 @@
#include <asm/time.h>
#include <asm/irq.h>
#include <asm/io.h>
#include "../ar531x.h"
#include <ar531x.h>
#define NO_PHY 0x1f

6
target/linux/atheros/files/arch/mips/atheros/ar5312/irq.c
View File

@ -23,7 +23,9 @@
#include <asm/time.h>
#include <asm/irq.h>
#include <asm/io.h>
#include "../ar531x.h"
#include <ar531x.h>
#include <gpio.h>
/*
* Called when an interrupt is received, this function
@ -53,6 +55,8 @@ asmlinkage void ar5312_irq_dispatch(void)
(void)sysRegRead(AR531X_TIMER);
} else if (ar531x_misc_intrs & AR531X_ISR_AHBPROC)
do_IRQ(AR531X_MISC_IRQ_AHB_PROC);
else if (ar531x_misc_intrs & AR531X_ISR_GPIO)
ar5312_gpio_irq_dispatch();
else if ((ar531x_misc_intrs & AR531X_ISR_UART0))
do_IRQ(AR531X_MISC_IRQ_UART0);
else if (ar531x_misc_intrs & AR531X_ISR_WD)

2
target/linux/atheros/files/arch/mips/atheros/ar5315/board.c
View File

@ -26,7 +26,7 @@
#include <asm/time.h>
#include <asm/irq.h>
#include <asm/io.h>
#include "../ar531x.h"
#include <ar531x.h>
static int is_5315 = 0;

4
target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c
View File

@ -23,7 +23,9 @@
#include <asm/bootinfo.h>
#include <asm/irq_cpu.h>
#include <asm/io.h>
#include "../ar531x.h"
#include <ar531x.h>
#include <gpio.h>
static u32 gpiointmask = 0, gpiointval = 0;

23
target/linux/atheros/files/arch/mips/atheros/board.c
View File

@ -25,7 +25,7 @@
#include <asm/bootinfo.h>
#include <asm/irq_cpu.h>
#include <asm/io.h>
#include "ar531x.h"
#include <ar531x.h>
char *board_config, *radio_config;
@ -216,3 +216,24 @@ void __init arch_init_irq(void)
DO_AR5312(ar5312_misc_intr_init(AR531X_MISC_IRQ_BASE);)
DO_AR5315(ar5315_misc_intr_init(AR531X_MISC_IRQ_BASE);)
}
static int __init ar531x_register_gpiodev(void)
{
static struct resource res = {
.start = 0xFFFFFFFF,
};
struct platform_device *pdev;
printk(KERN_INFO "ar531x: Registering GPIODEV device\n");
pdev = platform_device_register_simple("GPIODEV", 0, &res, 1);
if (!pdev) {
printk(KERN_ERR "ar531x: GPIODEV init failed\n");
return -ENODEV;
}
return 0;
}
device_initcall(ar531x_register_gpiodev);

339
target/linux/atheros/files/arch/mips/atheros/gpio.c Normal file
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@ -0,0 +1,339 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
* Copyright (C) 2006 FON Technology, SL.
* Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
* Copyright (C) 2007 Othello <bach_ag@hotmail.com>
*/
/*
* Support for AR531X GPIO -- General Purpose Input/Output Pins
*/
#include <linux/autoconf.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <asm/addrspace.h>
#include <asm/io.h>
#include <asm/irq_cpu.h>
#include <asm/gpio.h>
#include "ar531x.h"
/*
GPIO Interrupt Support
Make use of request_irq() and the function gpio_to_irq() to trap gpio events
*/
/* Global variables */
static u32 ar531x_gpio_intr_Mask = 0;
/*
AR5312: I don't have any devices with this chip. Assumed to be similar to AR5215
will someone who has one try the code and remove this message if it works?
*/
#ifdef CONFIG_ATHEROS_AR5315
/*
AR5315: Up to 2 GPIO pins may be monitored simultaneously
specifying more pins if you already have 2 will not have any effect
however, the excess gpio irqs will also be triggered if a valid gpio being monitored triggers
only high, low or edge triggered interrupt supported
*/
static unsigned int ar5315_gpio_set_type_gpio = 0;
static unsigned int ar5315_gpio_set_type_lvl = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
#endif
#ifdef CONFIG_ATHEROS_AR5312
/* Enable the specified AR5312_GPIO_IRQ interrupt */
static void ar5312_gpio_intr_enable(unsigned int irq) {
u32 reg;
unsigned int gpio;
unsigned int imr;
gpio = irq - (AR531X_GPIO_IRQ(0));
if (gpio >= AR531X_NUM_GPIO)
return;
ar531x_gpio_intr_Mask |= (1<<gpio);
reg = sysRegRead(AR531X_GPIO_CR);
reg &= ~(AR531X_GPIO_CR_M(gpio) | AR531X_GPIO_CR_UART(gpio) | AR531X_GPIO_CR_INT(gpio));
reg |= AR531X_GPIO_CR_I(gpio);
reg |= AR531X_GPIO_CR_INT(gpio);
sysRegWrite(AR531X_GPIO_CR, reg);
(void)sysRegRead(AR531X_GPIO_CR); /* flush to hardware */
imr = sysRegRead(AR531X_IMR);
imr |= AR531X_ISR_GPIO;
sysRegWrite(AR531X_IMR, imr);
imr = sysRegRead(AR531X_IMR); /* flush write buffer */
}
/* Disable the specified AR5312_GPIO_IRQ interrupt */
static void ar5312_gpio_intr_disable(unsigned int irq) {
u32 reg;
unsigned int gpio;
gpio = irq - (AR531X_GPIO_IRQ(0));
if (gpio >= AR531X_NUM_GPIO)
return;
reg = sysRegRead(AR531X_GPIO_CR);
reg &= ~(AR531X_GPIO_CR_M(gpio) | AR531X_GPIO_CR_UART(gpio) | AR531X_GPIO_CR_INT(gpio));
reg |= AR531X_GPIO_CR_I(gpio);
/* No GPIO_CR_INT bit */
sysRegWrite(AR531X_GPIO_CR, reg);
(void)sysRegRead(AR531X_GPIO_CR); /* flush to hardware */
/* Disable Interrupt if no gpio needs triggering */
if (ar531x_gpio_intr_Mask != 0) {
unsigned int imr;
imr = sysRegRead(AR531X_IMR);
imr &= ~AR531X_ISR_GPIO;
sysRegWrite(AR531X_IMR, imr);
imr = sysRegRead(AR531X_IMR); /* flush write buffer */
}
ar531x_gpio_intr_Mask &= ~(1<<gpio);
}
/* Turn on the specified AR5312_GPIO_IRQ interrupt */
static unsigned int ar5312_gpio_intr_startup(unsigned int irq) {
ar5312_gpio_intr_enable(irq);
return 0;
}
static void ar5312_gpio_intr_end(unsigned int irq) {
if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
ar5312_gpio_intr_enable(irq);
}
asmlinkage void ar5312_gpio_irq_dispatch(void) {
int i;
u32 gpioIntPending;
gpioIntPending = sysRegRead(AR531X_GPIO_DI) & ar531x_gpio_intr_Mask;
sysRegWrite(AR531X_ISR, sysRegRead(AR531X_IMR) | ~AR531X_ISR_GPIO);
for (i=0; i<AR531X_GPIO_IRQ_COUNT; i++) {
if (gpioIntPending & (1 << i))
do_IRQ(AR531X_GPIO_IRQ(i));
}
}
#endif /* #ifdef CONFIG_ATHEROS_AR5312 */
#ifdef CONFIG_ATHEROS_AR5315
/* Enable the specified AR5315_GPIO_IRQ interrupt */
static void ar5315_gpio_intr_enable(unsigned int irq) {
u32 reg;
unsigned int gpio;
unsigned int imr;
unsigned int i;
gpio = irq - (AR531X_GPIO_IRQ(0));
if (gpio >= AR5315_NUM_GPIO)
return;
ar531x_gpio_intr_Mask |= (1<<gpio);
reg = sysRegRead(AR5315_GPIO_CR);
reg &= ~(AR5315_GPIO_CR_M(gpio));
reg |= AR5315_GPIO_CR_I(gpio);
sysRegWrite(AR5315_GPIO_CR, reg);
(void)sysRegRead(AR5315_GPIO_CR); /* flush write to hardware */
/* Locate a free register slot to enable gpio intr
will fail silently if no more slots are available
*/
reg = sysRegRead(AR5315_GPIO_INT);
for (i=0 ; i<=AR5315_GPIO_INT_MAX_Y ; i++) {
/* Free slot means trigger level = 0 */
if ( AR5315_GPIO_INT_LVL_OFF ==
(reg & AR5315_GPIO_INT_LVL_M) ) {
unsigned int def_lvl = AR5315_GPIO_INT_LVL_EDGE;
if (ar5315_gpio_set_type_gpio == gpio)
def_lvl = ar5315_gpio_set_type_lvl;
/* Set the gpio level trigger mode */
/* reg &= ~(AR5315_GPIO_INT_LVL_M(i)); */
reg |= AR5315_GPIO_INT_LVL(i);
/* Enable the gpio pin */
reg &= ~(AR5315_GPIO_INT_M);
reg |= AR5315_GPIO_INT_S(i);
sysRegWrite(AR5315_GPIO_INT, reg);
(void)sysRegRead(AR5315_GPIO_INT); /* flush write to hardware */
/* break out of for loop */
break;
} /* end if trigger level for slot i is 0 */
} /* end for each slot */
imr = sysRegRead(AR5315_IMR);
imr |= AR5315_ISR_GPIO;
sysRegWrite(AR5315_IMR, imr);
imr = sysRegRead(AR5315_IMR); /* flush write buffer */
}
/* Disable the specified AR5315_GPIO_IRQ interrupt */
static void ar5315_gpio_intr_disable(unsigned int irq) {
u32 reg;
unsigned int gpio;
unsigned int i;
gpio = irq - (AR531X_GPIO_IRQ(0));
if (gpio >= AR5315_NUM_GPIO)
return;
reg = sysRegRead(AR5315_GPIO_CR);
reg &= ~(AR5315_GPIO_CR_M(gpio));
reg |= AR5315_GPIO_CR_I(gpio);
sysRegWrite(AR5315_GPIO_CR, reg);
(void)sysRegRead(AR5315_GPIO_CR); /* flush write to hardware */
/* Locate a the correct register slot to disable gpio intr */
reg = sysRegRead(AR5315_GPIO_INT);
for (i=0 ; i<=AR5315_GPIO_INT_MAX_Y ; i++) {
/* If this correct */
if ( AR5315_GPIO_INT_S(i) ==
(reg & AR5315_GPIO_INT_M) ) {
/* Clear the gpio level trigger mode */
reg &= ~(AR5315_GPIO_INT_LVL_M);
sysRegWrite(AR5315_GPIO_INT, reg);
(void)sysRegRead(AR5315_GPIO_INT); /* flush write to hardware */
break;
} /* end if trigger level for slot i is 0 */
} /* end for each slot */
/* Disable interrupt only if no gpio needs triggering */
if (ar531x_gpio_intr_Mask != 0) {
unsigned int imr;
imr = sysRegRead(AR5315_IMR);
imr &= ~AR5315_ISR_GPIO;
sysRegWrite(AR5315_IMR, imr);
imr = sysRegRead(AR5315_IMR); /* flush write buffer */
}
ar531x_gpio_intr_Mask &= ~(1<<gpio);
}
/* Turn on the specified AR5315_GPIO_IRQ interrupt */
static unsigned int ar5315_gpio_intr_startup(unsigned int irq) {
ar5315_gpio_intr_enable(irq);
return 0;
}
static void ar5315_gpio_intr_end(unsigned int irq) {
if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
ar5315_gpio_intr_enable(irq);
}
static int ar5315_gpio_intr_set_type(unsigned int irq, unsigned int flow_type) {
ar5315_gpio_set_type_gpio = irq - (AR531X_GPIO_IRQ(0));
if (ar5315_gpio_set_type_gpio > AR5315_NUM_GPIO)
return -EINVAL;
switch (flow_type & IRQF_TRIGGER_MASK) {
case IRQF_TRIGGER_RISING:
case IRQF_TRIGGER_FALLING:
printk(KERN_WARNING "AR5315 GPIO %u falling back to edge triggered\n", ar5315_gpio_set_type_gpio);
case IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING:
ar5315_gpio_set_type_lvl = AR5315_GPIO_INT_LVL_EDGE;
break;
case IRQF_TRIGGER_LOW:
ar5315_gpio_set_type_lvl = AR5315_GPIO_INT_LVL_LOW;
break;
case IRQF_TRIGGER_HIGH:
ar5315_gpio_set_type_lvl = AR5315_GPIO_INT_LVL_HIGH;
break;
default:
return -EINVAL;
}
return 0;
}
asmlinkage void ar5315_gpio_irq_dispatch(void){
int i;
u32 gpioIntPending;
gpioIntPending = sysRegRead(AR5315_GPIO_DI) & ar531x_gpio_intr_Mask;
sysRegWrite(AR5315_ISR, sysRegRead(AR5315_IMR) | ~AR5315_ISR_GPIO);
for (i=0; i<AR531X_GPIO_IRQ_COUNT; i++) {
if (gpioIntPending & (1 << i))
do_IRQ(AR531X_GPIO_IRQ(i));
}
}
#endif /* #ifdef CONFIG_ATHEROS_AR5315 */
/* Common Code */
static struct irq_chip ar531x_gpio_intr_controller = {
.typename = "AR531X GPIO",
};
/* ARGSUSED */
irqreturn_t
spurious_gpio_handler(int cpl, void *dev_id)
{
u32 gpioDataIn;
DO_AR5312(gpioDataIn = sysRegRead(AR531X_GPIO_DI);)
DO_AR5315(gpioDataIn = sysRegRead(AR5315_GPIO_DI);)
printk("spurious_gpio_handler: 0x%08x dev=%p DI=0x%08x gpioIntMask=0x%08x\n",
cpl, dev_id, gpioDataIn, ar531x_gpio_intr_Mask);
return IRQ_NONE;
}
static struct irqaction spurious_gpio = {
.handler = spurious_gpio_handler,
.name = "spurious_gpio",
};
/* Initialize AR531X GPIO interrupts */
static int __init ar531x_gpio_init(void)
{
int i;
DO_AR5312( \
ar531x_gpio_intr_controller.startup = ar5312_gpio_intr_startup; \
ar531x_gpio_intr_controller.shutdown = ar5312_gpio_intr_disable; \
ar531x_gpio_intr_controller.enable = ar5312_gpio_intr_enable; \
ar531x_gpio_intr_controller.disable = ar5312_gpio_intr_disable; \
ar531x_gpio_intr_controller.ack = ar5312_gpio_intr_disable; \
ar531x_gpio_intr_controller.end = ar5312_gpio_intr_end; \
)
DO_AR5315( \
ar531x_gpio_intr_controller.startup = ar5315_gpio_intr_startup; \
ar531x_gpio_intr_controller.shutdown = ar5315_gpio_intr_disable; \
ar531x_gpio_intr_controller.enable = ar5315_gpio_intr_enable; \
ar531x_gpio_intr_controller.disable = ar5315_gpio_intr_disable; \
ar531x_gpio_intr_controller.ack = ar5315_gpio_intr_disable; \
ar531x_gpio_intr_controller.end = ar5315_gpio_intr_end; \
ar531x_gpio_intr_controller.set_type = ar5315_gpio_intr_set_type; \
)
for (i = AR531X_GPIO_IRQ_BASE;
i < AR531X_GPIO_IRQ_BASE + AR531X_GPIO_IRQ_COUNT;
i++) {
irq_desc[i].status = IRQ_DISABLED;
irq_desc[i].action = NULL;
irq_desc[i].depth = 1;
irq_desc[i].chip = &ar531x_gpio_intr_controller;
}
setup_irq(AR531X_GPIO_IRQ_NONE, &spurious_gpio);
return 0;
}
subsys_initcall(ar531x_gpio_init);

2
target/linux/atheros/files/arch/mips/atheros/prom.c
View File

@ -23,7 +23,7 @@
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
#include "ar531x.h"
#include <ar531x.h>
void __init prom_init(void)
{

3
target/linux/atheros/files/arch/mips/atheros/reset.c
View File

@ -7,8 +7,7 @@
#include <linux/netlink.h>
#include <net/sock.h>
#include <asm/uaccess.h>
#include "ar531x.h"
#include "ar5315/ar5315.h"
#include <ar531x.h>
#define AR531X_RESET_GPIO_IRQ (AR531X_GPIO_IRQ_BASE + bcfg->resetConfigGpio)

0
target/linux/atheros/files/arch/mips/atheros/ar5312/ar5312.h → target/linux/atheros/files/include/asm-mips/mach-atheros/ar5312/ar5312.h
View File

6
target/linux/atheros/files/arch/mips/atheros/ar5315/ar5315.h → target/linux/atheros/files/include/asm-mips/mach-atheros/ar5315/ar5315.h
View File

@ -349,6 +349,12 @@
#define AR5315_GPIO_INT_LVL(x) ((x) << 6) /* interrupt level */
#define AR5315_GPIO_INT_LVL_M ((0x3) << 6) /* mask for int level */
#define AR5315_GPIO_INT_MAX_Y 1 /* Maximum value of Y for AR5313_GPIO_INT_* macros */
#define AR5315_GPIO_INT_LVL_OFF 0 /* Triggerring off */
#define AR5315_GPIO_INT_LVL_LOW 1 /* Low Level Triggered */
#define AR5315_GPIO_INT_LVL_HIGH 2 /* High Level Triggered */
#define AR5315_GPIO_INT_LVL_EDGE 3 /* Edge Triggered */
#define AR5315_RESET_GPIO 5
#define AR5315_NUM_GPIO 22

10
target/linux/atheros/files/arch/mips/atheros/ar531x.h → target/linux/atheros/files/include/asm-mips/mach-atheros/ar531x.h
View File

@ -4,8 +4,8 @@
#include <linux/version.h>
#include <asm/cpu-info.h>
#include <ar531x_platform.h>
#include "ar5312/ar5312.h"
#include "ar5315/ar5315.h"
#include <ar5312/ar5312.h>
#include <ar5315/ar5315.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24))
extern void (*board_time_init)(void);
@ -76,8 +76,8 @@ static inline int clz(unsigned long val)
#define AR531X_MISC_IRQ_COUNT 10
/* GPIO Interrupts [0..7], share AR531X_MISC_IRQ_GPIO */
#define AR531X_GPIO_IRQ_NONE AR531X_MISC_IRQ_BASE+0
#define AR531X_GPIO_IRQ(n) AR531X_MISC_IRQ_BASE+(n)+1
#define AR531X_GPIO_IRQ_NONE AR531X_GPIO_IRQ_BASE+0
#define AR531X_GPIO_IRQ(n) AR531X_GPIO_IRQ_BASE+(n)+1
#define AR531X_GPIO_IRQ_COUNT 22
#define sysRegRead(phys) \
@ -167,4 +167,6 @@ static inline u32 sysRegMask(u32 phys, u32 mask, u32 value)
return reg;
}
#define AR531X_NUM_GPIO 8
#endif

134
target/linux/atheros/files/include/asm-mips/mach-atheros/gpio.h Normal file
View File

@ -0,0 +1,134 @@
#ifndef _ATHEROS_GPIO_H_
#define _ATHEROS_GPIO_H_
#include "ar531x.h"
/* Common AR531X global variables */
/* extern u32 ar531x_gpio_intr_Mask; */
/* AR5312 exported routines */
#ifdef CONFIG_ATHEROS_AR5312
asmlinkage void ar5312_gpio_irq_dispatch(void);
#endif
/* AR5315 exported routines */
#ifdef CONFIG_ATHEROS_AR5315
asmlinkage void ar5315_gpio_irq_dispatch(void);
#endif
/*
* Wrappers for the generic GPIO layer
*/
/* Sets a gpio to input, or returns ENXIO for non-existent gpio */
static inline int gpio_direction_input(unsigned gpio) {
DO_AR5312( if (gpio > AR531X_NUM_GPIO) { \
return -ENXIO; \
} else { \
sysRegWrite(AR531X_GPIO_CR, \
( sysRegRead(AR531X_GPIO_CR) & \
~(AR531X_GPIO_CR_M(gpio)) ) | \
AR531X_GPIO_CR_I(gpio) ); \
return 0; \
} \
)
DO_AR5315( if (gpio > AR5315_NUM_GPIO) { \
return -ENXIO; \
} else { \
sysRegWrite(AR5315_GPIO_CR, \
( sysRegRead(AR5315_GPIO_CR) & \
~(AR5315_GPIO_CR_M(gpio)) ) | \
AR5315_GPIO_CR_I(gpio) ); \
return 0; \
} \
)
}
/* Sets a gpio to output with value, or returns ENXIO for non-existent gpio */
static inline int gpio_direction_output(unsigned gpio, int value) {
DO_AR5312( if (gpio > AR531X_NUM_GPIO) { \
return -ENXIO; \
} else { \
sysRegWrite(AR531X_GPIO_DO, \
( (sysRegRead(AR531X_GPIO_DO) & \
~(1 << gpio) ) | \
((value!=0) << gpio)) ); \
sysRegWrite(AR531X_GPIO_CR, \
sysRegRead(AR531X_GPIO_CR) | \
AR531X_GPIO_CR_O(gpio) ); \
return 0; \
} \
)
DO_AR5315( if (gpio > AR5315_NUM_GPIO) { \
return -ENXIO; \
} else { \
sysRegWrite(AR5315_GPIO_DO, \
( (sysRegRead(AR5315_GPIO_DO) & \
~(1 << gpio)) | \
((value!=0) << gpio)) ); \
sysRegWrite(AR5315_GPIO_CR, \
sysRegRead(AR5315_GPIO_CR) | \
AR5315_GPIO_CR_O(gpio) ); \
return 0; \
} \
)
}
/* Reads the gpio pin. Unchecked function */
static inline int gpio_get_value(unsigned gpio) {
DO_AR5312(return (sysRegRead(AR531X_GPIO_DI) & (1 << gpio));)
DO_AR5315(return (sysRegRead(AR5315_GPIO_DI) & (1 << gpio));)
}
/* Writes to the gpio pin. Unchecked function */
static inline void gpio_set_value(unsigned gpio, int value) {
DO_AR5312( sysRegWrite(AR531X_GPIO_DO, \
( (sysRegRead(AR531X_GPIO_DO) & \
~(1 << gpio)) | \
((value!=0) << gpio)) ); \
)
DO_AR5315( sysRegWrite(AR5315_GPIO_DO, \
( (sysRegRead(AR5315_GPIO_DO) & \
~(1 << gpio)) | \
((value!=0) << gpio)) ); \
)
}
static inline int gpio_request(unsigned gpio, const char *label) {
return 0;
}
static inline void gpio_free(unsigned gpio) {
}
/* Returns IRQ to attach for gpio. Unchecked function */
static inline int gpio_to_irq(unsigned gpio) {
return AR531X_GPIO_IRQ(gpio);
}
/* Returns gpio for IRQ attached. Unchecked function */
static inline int irq_to_gpio(unsigned irq) {
return (irq - (AR531X_GPIO_IRQ(0)));
}
/* #include <asm-generic/gpio.h> */ /* cansleep wrappers */
/* platforms that don't directly support access to GPIOs through I2C, SPI,
* or other blocking infrastructure can use these wrappers.
*/
static inline int gpio_cansleep(unsigned gpio) {
return 0;
}
static inline int gpio_get_value_cansleep(unsigned gpio) {
might_sleep();
return gpio_get_value(gpio);
}
static inline void gpio_set_value_cansleep(unsigned gpio, int value) {
might_sleep();
gpio_set_value(gpio, value);
}
#endif

9
target/linux/atheros/patches-2.6.23/100-board.patch
View File

@ -1,7 +1,7 @@
diff -urN linux.old/arch/mips/Kconfig linux.dev/arch/mips/Kconfig
--- linux.old/arch/mips/Kconfig 2007-02-02 23:55:52.912446784 +0100
+++ linux.dev/arch/mips/Kconfig 2007-02-03 21:50:25.262027104 +0100
@@ -45,6 +45,15 @@
@@ -44,6 +44,16 @@
note that a kernel built with this option selected will not be
able to run on normal units.
@ -13,18 +13,19 @@ diff -urN linux.old/arch/mips/Kconfig linux.dev/arch/mips/Kconfig
+ select SYS_HAS_CPU_MIPS32_R1
+ select SYS_SUPPORTS_BIG_ENDIAN
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select GENERIC_GPIO
+
config MIPS_COBALT
bool "Cobalt Server"
select DMA_NONCOHERENT
@@ -658,6 +668,7 @@
@@ -597,6 +607,7 @@
endchoice
+source "arch/mips/atheros/Kconfig"
source "arch/mips/au1000/Kconfig"
source "arch/mips/ddb5xxx/Kconfig"
source "arch/mips/gt64120/ev64120/Kconfig"
source "arch/mips/jazz/Kconfig"
source "arch/mips/pmc-sierra/Kconfig"
diff -urN linux.old/arch/mips/Makefile linux.dev/arch/mips/Makefile
--- linux.old/arch/mips/Makefile 2007-02-02 23:55:52.913446632 +0100
+++ linux.dev/arch/mips/Makefile 2007-02-03 17:40:29.193776000 +0100

3
target/linux/atheros/patches-2.6.24/100-board.patch
View File

@ -1,7 +1,7 @@
diff -urN linux.old/arch/mips/Kconfig linux.dev/arch/mips/Kconfig
--- linux.old/arch/mips/Kconfig 2007-02-02 23:55:52.912446784 +0100
+++ linux.dev/arch/mips/Kconfig 2007-02-03 21:50:25.262027104 +0100
@@ -45,6 +45,17 @@
@@ -45,6 +45,18 @@
note that a kernel built with this option selected will not be
able to run on normal units.
@ -15,6 +15,7 @@ diff -urN linux.old/arch/mips/Kconfig linux.dev/arch/mips/Kconfig
+ select SYS_HAS_CPU_MIPS32_R1
+ select SYS_SUPPORTS_BIG_ENDIAN
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select GENERIC_GPIO
+
config MIPS_COBALT
bool "Cobalt Server"