mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-01 11:56:45 +07:00
b06f3e19a6
This patch simplifies the BCM47xx GPIO code by using the new SSB GPIO API, which does a lot things that were implemented directly in the BCM47xx code. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
63 lines
1.6 KiB
C
63 lines
1.6 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>
|
|
|
|
#if (BCM47XX_CHIPCO_GPIO_LINES > BCM47XX_EXTIF_GPIO_LINES)
|
|
static DECLARE_BITMAP(gpio_in_use, BCM47XX_CHIPCO_GPIO_LINES);
|
|
#else
|
|
static DECLARE_BITMAP(gpio_in_use, BCM47XX_EXTIF_GPIO_LINES);
|
|
#endif
|
|
|
|
int gpio_request(unsigned gpio, const char *tag)
|
|
{
|
|
if (ssb_chipco_available(&ssb_bcm47xx.chipco) &&
|
|
((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
|
|
return -EINVAL;
|
|
|
|
if (ssb_extif_available(&ssb_bcm47xx.extif) &&
|
|
((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES))
|
|
return -EINVAL;
|
|
|
|
if (test_and_set_bit(gpio, gpio_in_use))
|
|
return -EBUSY;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(gpio_request);
|
|
|
|
void gpio_free(unsigned gpio)
|
|
{
|
|
if (ssb_chipco_available(&ssb_bcm47xx.chipco) &&
|
|
((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES))
|
|
return;
|
|
|
|
if (ssb_extif_available(&ssb_bcm47xx.extif) &&
|
|
((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES))
|
|
return;
|
|
|
|
clear_bit(gpio, gpio_in_use);
|
|
}
|
|
EXPORT_SYMBOL(gpio_free);
|
|
|
|
int gpio_to_irq(unsigned gpio)
|
|
{
|
|
if (ssb_chipco_available(&ssb_bcm47xx.chipco))
|
|
return ssb_mips_irq(ssb_bcm47xx.chipco.dev) + 2;
|
|
else if (ssb_extif_available(&ssb_bcm47xx.extif))
|
|
return ssb_mips_irq(ssb_bcm47xx.extif.dev) + 2;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(gpio_to_irq);
|
|
|