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bcma: add bcma_chipco_gpio_pull{up,down} 

Add functions to access the GPIO registers for pullup and pulldown.
These are needed for handling gpio registration.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4586
Acked-by: Florian Fainelli <florian@openwrt.org>
This commit is contained in:
Hauke Mehrtens 2012-11-20 22:24:28 +00:00 committed by John Crispin
parent ef85fb2830
commit ea3488f469
2 changed files with 32 additions and 0 deletions
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30
drivers/bcma/driver_chipcommon.c
View File

@ -145,6 +145,36 @@ u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value)
return res;
}
u32 bcma_chipco_gpio_pullup(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
unsigned long flags;
u32 res;
if (cc->core->id.rev < 20)
return 0;
spin_lock_irqsave(&cc->gpio_lock, flags);
res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOPULLUP, mask, value);
spin_unlock_irqrestore(&cc->gpio_lock, flags);
return res;
}
u32 bcma_chipco_gpio_pulldown(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
unsigned long flags;
u32 res;
if (cc->core->id.rev < 20)
return 0;
spin_lock_irqsave(&cc->gpio_lock, flags);
res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOPULLDOWN, mask, value);
spin_unlock_irqrestore(&cc->gpio_lock, flags);
return res;
}
#ifdef CONFIG_BCMA_DRIVER_MIPS
void bcma_chipco_serial_init(struct bcma_drv_cc *cc)
{

2
include/linux/bcma/bcma_driver_chipcommon.h
View File

@ -606,6 +606,8 @@ u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value);
u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value);
u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask, u32 value);
u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value);
u32 bcma_chipco_gpio_pullup(struct bcma_drv_cc *cc, u32 mask, u32 value);
u32 bcma_chipco_gpio_pulldown(struct bcma_drv_cc *cc, u32 mask, u32 value);
/* PMU support */
extern void bcma_pmu_init(struct bcma_drv_cc *cc);