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authorJohn Crispin <blogic@openwrt.org>2008-04-03 20:28:10 +0000
committerJohn Crispin <blogic@openwrt.org>2008-04-03 20:28:10 +0000
commit6766d68c8526d03c8080f54a1348a2d0948f38c4 (patch)
treed5e82292716c3d80a459d15808dbff126cdc5485 /target/linux/atheros
parente4ef075c565397307b3ae809bb901db017d3b046 (diff)
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upstream-6766d68c8526d03c8080f54a1348a2d0948f38c4.zip
add gpio support to atheros, fixes #1861, thanks Othello
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10724 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/atheros')
-rw-r--r--target/linux/atheros/config-2.6.233
-rw-r--r--target/linux/atheros/config-2.6.242
-rw-r--r--target/linux/atheros/files/arch/mips/atheros/Makefile2
-rw-r--r--target/linux/atheros/files/arch/mips/atheros/ar5312/board.c2
-rw-r--r--target/linux/atheros/files/arch/mips/atheros/ar5312/irq.c6
-rw-r--r--target/linux/atheros/files/arch/mips/atheros/ar5315/board.c2
-rw-r--r--target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c4
-rw-r--r--target/linux/atheros/files/arch/mips/atheros/board.c23
-rw-r--r--target/linux/atheros/files/arch/mips/atheros/gpio.c339
-rw-r--r--target/linux/atheros/files/arch/mips/atheros/prom.c2
-rw-r--r--target/linux/atheros/files/arch/mips/atheros/reset.c3
-rw-r--r--target/linux/atheros/files/include/asm-mips/mach-atheros/ar5312/ar5312.h (renamed from target/linux/atheros/files/arch/mips/atheros/ar5312/ar5312.h)0
-rw-r--r--target/linux/atheros/files/include/asm-mips/mach-atheros/ar5315/ar5315.h (renamed from target/linux/atheros/files/arch/mips/atheros/ar5315/ar5315.h)6
-rw-r--r--target/linux/atheros/files/include/asm-mips/mach-atheros/ar531x.h (renamed from target/linux/atheros/files/arch/mips/atheros/ar531x.h)10
-rw-r--r--target/linux/atheros/files/include/asm-mips/mach-atheros/gpio.h134
-rw-r--r--target/linux/atheros/patches-2.6.23/100-board.patch9
-rw-r--r--target/linux/atheros/patches-2.6.24/100-board.patch3
17 files changed, 531 insertions, 19 deletions
diff --git a/target/linux/atheros/config-2.6.23 b/target/linux/atheros/config-2.6.23
index a71c22ca2e..90f3909986 100644
--- a/target/linux/atheros/config-2.6.23
+++ b/target/linux/atheros/config-2.6.23
@@ -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
diff --git a/target/linux/atheros/config-2.6.24 b/target/linux/atheros/config-2.6.24
index 652e712952..8a4779a8f3 100644
--- a/target/linux/atheros/config-2.6.24
+++ b/target/linux/atheros/config-2.6.24
@@ -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
diff --git a/target/linux/atheros/files/arch/mips/atheros/Makefile b/target/linux/atheros/files/arch/mips/atheros/Makefile
index 2c2b991bc4..0d00336fd4 100644
--- a/target/linux/atheros/files/arch/mips/atheros/Makefile
+++ b/target/linux/atheros/files/arch/mips/atheros/Makefile
@@ -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/
diff --git a/target/linux/atheros/files/arch/mips/atheros/ar5312/board.c b/target/linux/atheros/files/arch/mips/atheros/ar5312/board.c
index dac83f0a3f..3768e30be0 100644
--- a/target/linux/atheros/files/arch/mips/atheros/ar5312/board.c
+++ b/target/linux/atheros/files/arch/mips/atheros/ar5312/board.c
@@ -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
diff --git a/target/linux/atheros/files/arch/mips/atheros/ar5312/irq.c b/target/linux/atheros/files/arch/mips/atheros/ar5312/irq.c
index ac52d9e5d8..95bcf3a458 100644
--- a/target/linux/atheros/files/arch/mips/atheros/ar5312/irq.c
+++ b/target/linux/atheros/files/arch/mips/atheros/ar5312/irq.c
@@ -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)
diff --git a/target/linux/atheros/files/arch/mips/atheros/ar5315/board.c b/target/linux/atheros/files/arch/mips/atheros/ar5315/board.c
index 8247d8548c..57d17f526a 100644
--- a/target/linux/atheros/files/arch/mips/atheros/ar5315/board.c
+++ b/target/linux/atheros/files/arch/mips/atheros/ar5315/board.c
@@ -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;
diff --git a/target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c b/target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c
index 750c90540d..621c7fc0b8 100644
--- a/target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c
+++ b/target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c
@@ -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;
diff --git a/target/linux/atheros/files/arch/mips/atheros/board.c b/target/linux/atheros/files/arch/mips/atheros/board.c
index ccbda48546..59aa134a3f 100644
--- a/target/linux/atheros/files/arch/mips/atheros/board.c
+++ b/target/linux/atheros/files/arch/mips/atheros/board.c
@@ -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);
diff --git a/target/linux/atheros/files/arch/mips/atheros/gpio.c b/target/linux/atheros/files/arch/mips/atheros/gpio.c
new file mode 100644
index 0000000000..5e34c857cc
--- /dev/null
+++ b/target/linux/atheros/files/arch/mips/atheros/gpio.c
@@ -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);
+
diff --git a/target/linux/atheros/files/arch/mips/atheros/prom.c b/target/linux/atheros/files/arch/mips/atheros/prom.c
index 250507046c..73c66aca50 100644
--- a/target/linux/atheros/files/arch/mips/atheros/prom.c
+++ b/target/linux/atheros/files/arch/mips/atheros/prom.c
@@ -23,7 +23,7 @@
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
-#include "ar531x.h"
+#include <ar531x.h>
void __init prom_init(void)
{
diff --git a/target/linux/atheros/files/arch/mips/atheros/reset.c b/target/linux/atheros/files/arch/mips/atheros/reset.c
index 52fa3bbfcf..3230aa1155 100644
--- a/target/linux/atheros/files/arch/mips/atheros/reset.c
+++ b/target/linux/atheros/files/arch/mips/atheros/reset.c
@@ -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)
diff --git a/target/linux/atheros/files/arch/mips/atheros/ar5312/ar5312.h b/target/linux/atheros/files/include/asm-mips/mach-atheros/ar5312/ar5312.h
index 2b6b875b4f..2b6b875b4f 100644
--- a/target/linux/atheros/files/arch/mips/atheros/ar5312/ar5312.h
+++ b/target/linux/atheros/files/include/asm-mips/mach-atheros/ar5312/ar5312.h
diff --git a/target/linux/atheros/files/arch/mips/atheros/ar5315/ar5315.h b/target/linux/atheros/files/include/asm-mips/mach-atheros/ar5315/ar5315.h
index 567141cb76..3930cb9053 100644
--- a/target/linux/atheros/files/arch/mips/atheros/ar5315/ar5315.h
+++ b/target/linux/atheros/files/include/asm-mips/mach-atheros/ar5315/ar5315.h
@@ -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
diff --git a/target/linux/atheros/files/arch/mips/atheros/ar531x.h b/target/linux/atheros/files/include/asm-mips/mach-atheros/ar531x.h
index d790a88073..c77d74ec9f 100644
--- a/target/linux/atheros/files/arch/mips/atheros/ar531x.h
+++ b/target/linux/atheros/files/include/asm-mips/mach-atheros/ar531x.h
@@ -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
diff --git a/target/linux/atheros/files/include/asm-mips/mach-atheros/gpio.h b/target/linux/atheros/files/include/asm-mips/mach-atheros/gpio.h
new file mode 100644
index 0000000000..560b8cc0dc
--- /dev/null
+++ b/target/linux/atheros/files/include/asm-mips/mach-atheros/gpio.h
@@ -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
+
diff --git a/target/linux/atheros/patches-2.6.23/100-board.patch b/target/linux/atheros/patches-2.6.23/100-board.patch
index f1aa655f69..28509a3d0c 100644
--- a/target/linux/atheros/patches-2.6.23/100-board.patch
+++ b/target/linux/atheros/patches-2.6.23/100-board.patch
@@ -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
diff --git a/target/linux/atheros/patches-2.6.24/100-board.patch b/target/linux/atheros/patches-2.6.24/100-board.patch
index fc72d82933..f1a0d0641a 100644
--- a/target/linux/atheros/patches-2.6.24/100-board.patch
+++ b/target/linux/atheros/patches-2.6.24/100-board.patch
@@ -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"