mirror of
https://github.com/torvalds/linux
synced 2024-09-06 18:01:05 +00:00
![Aurelien Jarno](/assets/img/avatar_default.png)
Add GPIO support to the BCM47XX platform. It will be used by a GPIO LED driver. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/*
|
|
* 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) 2007 Aurelien Jarno <aurelien@aurel32.net>
|
|
*/
|
|
|
|
#include <linux/ssb/ssb.h>
|
|
#include <linux/ssb/ssb_driver_chipcommon.h>
|
|
#include <linux/ssb/ssb_driver_extif.h>
|
|
#include <asm/mach-bcm47xx/bcm47xx.h>
|
|
#include <asm/mach-bcm47xx/gpio.h>
|
|
|
|
int bcm47xx_gpio_to_irq(unsigned gpio)
|
|
{
|
|
if (ssb_bcm47xx.chipco.dev)
|
|
return ssb_mips_irq(ssb_bcm47xx.chipco.dev) + 2;
|
|
else if (ssb_bcm47xx.extif.dev)
|
|
return ssb_mips_irq(ssb_bcm47xx.extif.dev) + 2;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(bcm47xx_gpio_to_irq);
|
|
|
|
int bcm47xx_gpio_get_value(unsigned gpio)
|
|
{
|
|
if (ssb_bcm47xx.chipco.dev)
|
|
return ssb_chipco_gpio_in(&ssb_bcm47xx.chipco, 1 << gpio);
|
|
else if (ssb_bcm47xx.extif.dev)
|
|
return ssb_extif_gpio_in(&ssb_bcm47xx.extif, 1 << gpio);
|
|
else
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(bcm47xx_gpio_get_value);
|
|
|
|
void bcm47xx_gpio_set_value(unsigned gpio, int value)
|
|
{
|
|
if (ssb_bcm47xx.chipco.dev)
|
|
ssb_chipco_gpio_out(&ssb_bcm47xx.chipco,
|
|
1 << gpio,
|
|
value ? 1 << gpio : 0);
|
|
else if (ssb_bcm47xx.extif.dev)
|
|
ssb_extif_gpio_out(&ssb_bcm47xx.extif,
|
|
1 << gpio,
|
|
value ? 1 << gpio : 0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(bcm47xx_gpio_set_value);
|
|
|
|
int bcm47xx_gpio_direction_input(unsigned gpio)
|
|
{
|
|
if (ssb_bcm47xx.chipco.dev && (gpio < BCM47XX_CHIPCO_GPIO_LINES))
|
|
ssb_chipco_gpio_outen(&ssb_bcm47xx.chipco,
|
|
1 << gpio, 0);
|
|
else if (ssb_bcm47xx.extif.dev && (gpio < BCM47XX_EXTIF_GPIO_LINES))
|
|
ssb_extif_gpio_outen(&ssb_bcm47xx.extif,
|
|
1 << gpio, 0);
|
|
else
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(bcm47xx_gpio_direction_input);
|
|
|
|
int bcm47xx_gpio_direction_output(unsigned gpio, int value)
|
|
{
|
|
bcm47xx_gpio_set_value(gpio, value);
|
|
|
|
if (ssb_bcm47xx.chipco.dev && (gpio < BCM47XX_CHIPCO_GPIO_LINES))
|
|
ssb_chipco_gpio_outen(&ssb_bcm47xx.chipco,
|
|
1 << gpio, 1 << gpio);
|
|
else if (ssb_bcm47xx.extif.dev && (gpio < BCM47XX_EXTIF_GPIO_LINES))
|
|
ssb_extif_gpio_outen(&ssb_bcm47xx.extif,
|
|
1 << gpio, 1 << gpio);
|
|
else
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(bcm47xx_gpio_direction_output);
|
|
|