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authorHauke Mehrtens <hauke@hauke-m.de>2012-11-20 22:24:28 +0000
committerJohn Crispin <blogic@openwrt.org>2012-11-21 21:55:51 +0100
commitea3488f4696fe22811eb19bee7088b732d3f8fe0 (patch)
tree21928c292726fb44f831353deee3af0ee032e7b0 /drivers/bcma
parentef85fb28305fad7617f307383ebba554a3a891a2 (diff)
downloadlinux-ea3488f4696fe22811eb19bee7088b732d3f8fe0.tar.bz2
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>
Diffstat (limited to 'drivers/bcma')
-rw-r--r--drivers/bcma/driver_chipcommon.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/bcma/driver_chipcommon.c b/drivers/bcma/driver_chipcommon.c
index c9b63d9ff61d..0945383c2271 100644
--- a/drivers/bcma/driver_chipcommon.c
+++ b/drivers/bcma/driver_chipcommon.c
@@ -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)
{