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ssb: Make the GPIO API reentrancy safe.

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10496 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
mb
2008-02-19 15:22:17 +00:00
parent 641e19bb65
commit 84296b55ed
4 changed files with 265 additions and 72 deletions
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34
target/linux/brcm47xx/files/include/asm-mips/mach-bcm947xx/gpio.h
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@@ -1,9 +1,7 @@
#ifndef __BCM947XX_GPIO_H
#define __BCM947XX_GPIO_H
#include <linux/ssb/ssb.h>
#include <linux/ssb/ssb_driver_chipcommon.h>
#include <linux/ssb/ssb_driver_extif.h>
#include <linux/ssb/ssb_embedded.h>
extern struct ssb_bus ssb;
@@ -18,24 +16,13 @@ static inline void gpio_free(unsigned gpio)
static inline int gpio_direction_input(unsigned gpio)
{
if (ssb.chipco.dev)
ssb_chipco_gpio_outen(&ssb.chipco, 1 << gpio, 0);
else if (ssb.extif.dev)
ssb_extif_gpio_outen(&ssb.extif, 1 << gpio, 0);
else
return -EINVAL;
ssb_gpio_outen(&ssb, 1 << gpio, 0);
return 0;
}
static inline int gpio_direction_output(unsigned gpio, int value)
{
if (ssb.chipco.dev)
ssb_chipco_gpio_outen(&ssb.chipco, 1 << gpio, value << gpio);
else if (ssb.extif.dev)
ssb_extif_gpio_outen(&ssb.extif, 1 << gpio, value << gpio);
else
return -EINVAL;
ssb_gpio_outen(&ssb, 1 << gpio, value << gpio);
return 0;
}
@@ -43,7 +30,7 @@ static inline int gpio_direction_output(unsigned gpio, int value)
static inline int gpio_to_irq(unsigned gpio)
{
struct ssb_device *dev;
dev = ssb.chipco.dev;
if (!dev)
dev = ssb.extif.dev;
@@ -61,21 +48,12 @@ static inline int irq_to_gpio(unsigned gpio)
static inline int gpio_get_value(unsigned gpio)
{
if (ssb.chipco.dev)
return ssb_chipco_gpio_in(&ssb.chipco, 1 << gpio) ? 1 : 0;
else if (ssb.extif.dev)
return ssb_extif_gpio_in(&ssb.extif, 1 << gpio) ? 1 : 0;
else
return 0;
return !!ssb_gpio_in(&ssb, 1 << gpio);
}
static inline int gpio_set_value(unsigned gpio, int value)
{
if (ssb.chipco.dev)
ssb_chipco_gpio_out(&ssb.chipco, 1 << gpio, (value ? 1 << gpio : 0));
else if (ssb.extif.dev)
ssb_extif_gpio_out(&ssb.extif, 1 << gpio, (value ? 1 << gpio : 0));
ssb_gpio_out(&ssb, 1 << gpio, (value ? 1 << gpio : 0));
return 0;
}