[armel/ixp4xx] Add gpioblib support (fixes FTBFS)
svn path=/dists/trunk/linux-2.6/; revision=18072
This commit is contained in:
Ben Hutchings
parent
1bd1a3f2d2
commit
d20c752850
|
|
@ -5,6 +5,7 @@ linux-2.6 (3.1.0~rc5-1~experimental.1) UNRELEASED; urgency=low
|
|||
[ Ben Hutchings ]
|
||||
* [ia64] Disable GENERIC_GPIO (fixes FTBFS)
|
||||
* [i386] libertas: prioritize usb8388_olpc.bin firmware on OLPC machines
|
||||
* [armel/ixp4xx] Add gpioblib support (fixes FTBFS)
|
||||
|
||||
-- Ben Hutchings <ben@decadent.org.uk> Mon, 05 Sep 2011 04:18:43 +0100
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,158 @@
|
|||
From: Imre Kaloz <kaloz@openwrt.org>
|
||||
Subject: [RFC/PATCH] ARM: ixp4xx gpiolib support
|
||||
Date: Mon, 5 Sep 2011 14:49:51 +0200
|
||||
|
||||
This patch adds gpiolib support for the IXP4xx platform
|
||||
|
||||
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
|
||||
---
|
||||
arch/arm/Kconfig | 2 +-
|
||||
arch/arm/mach-ixp4xx/common.c | 39 +++++++++++++++++++++++++
|
||||
arch/arm/mach-ixp4xx/include/mach/gpio.h | 46 ++++++++++--------------------
|
||||
3 files changed, 55 insertions(+), 32 deletions(-)
|
||||
|
||||
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
|
||||
index 3269576..e793a75 100644
|
||||
--- a/arch/arm/Kconfig
|
||||
+++ b/arch/arm/Kconfig
|
||||
@@ -481,7 +481,7 @@ config ARCH_IXP4XX
|
||||
depends on MMU
|
||||
select CLKSRC_MMIO
|
||||
select CPU_XSCALE
|
||||
- select GENERIC_GPIO
|
||||
+ select ARCH_REQUIRE_GPIOLIB
|
||||
select GENERIC_CLOCKEVENTS
|
||||
select HAVE_SCHED_CLOCK
|
||||
select MIGHT_HAVE_PCI
|
||||
diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c
|
||||
index 0777257..7603456 100644
|
||||
--- a/arch/arm/mach-ixp4xx/common.c
|
||||
+++ b/arch/arm/mach-ixp4xx/common.c
|
||||
@@ -36,6 +36,7 @@
|
||||
#include <asm/page.h>
|
||||
#include <asm/irq.h>
|
||||
#include <asm/sched_clock.h>
|
||||
+#include <asm/gpio.h>
|
||||
|
||||
#include <asm/mach/map.h>
|
||||
#include <asm/mach/irq.h>
|
||||
@@ -375,12 +376,50 @@ static struct platform_device *ixp46x_devices[] __initdata = {
|
||||
unsigned long ixp4xx_exp_bus_size;
|
||||
EXPORT_SYMBOL(ixp4xx_exp_bus_size);
|
||||
|
||||
+static int ixp4xx_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
|
||||
+{
|
||||
+ gpio_line_config(gpio, IXP4XX_GPIO_IN);
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static int ixp4xx_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int level)
|
||||
+{
|
||||
+ gpio_line_set(gpio, level);
|
||||
+ gpio_line_config(gpio, IXP4XX_GPIO_OUT);
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static int ixp4xx_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
|
||||
+{
|
||||
+ int value;
|
||||
+
|
||||
+ gpio_line_get(gpio, &value);
|
||||
+ return value;
|
||||
+}
|
||||
+
|
||||
+static void ixp4xx_gpio_set_value(struct gpio_chip *chip, unsigned gpio, int value)
|
||||
+{
|
||||
+ gpio_line_set(gpio, value);
|
||||
+}
|
||||
+
|
||||
+static struct gpio_chip ixp4xx_gpio_chip = {
|
||||
+ .label = "IXP4XX_GPIO_CHIP",
|
||||
+ .direction_input = ixp4xx_gpio_direction_input,
|
||||
+ .direction_output = ixp4xx_gpio_direction_output,
|
||||
+ .get = ixp4xx_gpio_get_value,
|
||||
+ .set = ixp4xx_gpio_set_value,
|
||||
+ .base = 0,
|
||||
+ .ngpio = 16,
|
||||
+};
|
||||
+
|
||||
void __init ixp4xx_sys_init(void)
|
||||
{
|
||||
ixp4xx_exp_bus_size = SZ_16M;
|
||||
|
||||
platform_add_devices(ixp4xx_devices, ARRAY_SIZE(ixp4xx_devices));
|
||||
|
||||
+ gpiochip_add(&ixp4xx_gpio_chip);
|
||||
+
|
||||
if (cpu_is_ixp46x()) {
|
||||
int region;
|
||||
|
||||
diff --git a/arch/arm/mach-ixp4xx/include/mach/gpio.h b/arch/arm/mach-ixp4xx/include/mach/gpio.h
|
||||
index a5f87de..86f3596 100644
|
||||
--- a/arch/arm/mach-ixp4xx/include/mach/gpio.h
|
||||
+++ b/arch/arm/mach-ixp4xx/include/mach/gpio.h
|
||||
@@ -27,47 +27,31 @@
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <mach/hardware.h>
|
||||
+#include <asm-generic/gpio.h> /* cansleep wrappers */
|
||||
|
||||
-static inline int gpio_request(unsigned gpio, const char *label)
|
||||
-{
|
||||
- return 0;
|
||||
-}
|
||||
-
|
||||
-static inline void gpio_free(unsigned gpio)
|
||||
-{
|
||||
- might_sleep();
|
||||
-
|
||||
- return;
|
||||
-}
|
||||
-
|
||||
-static inline int gpio_direction_input(unsigned gpio)
|
||||
-{
|
||||
- gpio_line_config(gpio, IXP4XX_GPIO_IN);
|
||||
- return 0;
|
||||
-}
|
||||
-
|
||||
-static inline int gpio_direction_output(unsigned gpio, int level)
|
||||
-{
|
||||
- gpio_line_set(gpio, level);
|
||||
- gpio_line_config(gpio, IXP4XX_GPIO_OUT);
|
||||
- return 0;
|
||||
-}
|
||||
+#define NR_BUILTIN_GPIO 16
|
||||
|
||||
static inline int gpio_get_value(unsigned gpio)
|
||||
{
|
||||
- int value;
|
||||
-
|
||||
- gpio_line_get(gpio, &value);
|
||||
-
|
||||
- return value;
|
||||
+ if (gpio < NR_BUILTIN_GPIO)
|
||||
+ {
|
||||
+ int value;
|
||||
+ gpio_line_get(gpio, &value);
|
||||
+ return value;
|
||||
+ }
|
||||
+ else
|
||||
+ return __gpio_get_value(gpio);
|
||||
}
|
||||
|
||||
static inline void gpio_set_value(unsigned gpio, int value)
|
||||
{
|
||||
- gpio_line_set(gpio, value);
|
||||
+ if (gpio < NR_BUILTIN_GPIO)
|
||||
+ gpio_line_set(gpio, value);
|
||||
+ else
|
||||
+ __gpio_set_value(gpio, value);
|
||||
}
|
||||
|
||||
-#include <asm-generic/gpio.h> /* cansleep wrappers */
|
||||
+#define gpio_cansleep __gpio_cansleep
|
||||
|
||||
extern int gpio_to_irq(int gpio);
|
||||
extern int irq_to_gpio(unsigned int irq);
|
||||
--
|
||||
1.7.1
|
||||
|
|
@ -43,3 +43,4 @@
|
|||
+ bugfix/alpha/alpha-gpio-GENERIC_GPIO-default-must-be-n.patch
|
||||
+ bugfix/ia64/ia64-gpio-GENERIC_GPIO-default-must-be-n.patch
|
||||
+ features/x86/libertas-prioritize-usb8388_olpc.bin-firmware-on-OLPC-machines.patch
|
||||
+ bugfix/arm/ARM-ixp4xx-gpiolib-support.patch
|
||||
|
|
|
|||
Loading…
Reference in New Issue