Add functions to access the GPIO registers for pullup and pulldown.
These are needed for handling gpio registration.
Signed-off-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
---
drivers/bcma/driver_chipcommon.c | 30 +++++++++++++++++++++++++++
include/linux/bcma/bcma_driver_chipcommon.h | 2 ++
2 files changed, 32 insertions(+)
diff --git a/drivers/bcma/driver_chipcommon.c b/drivers/bcma/driver_chipcommon.c
index 9b34316..f3c736a 100644
--- a/drivers/bcma/driver_chipcommon.c
+++ b/drivers/bcma/driver_chipcommon.c
@@ -152,6 +152,36 @@ 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)
{
diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h
index a085d98..2567026 100644
--- a/include/linux/bcma/bcma_driver_chipcommon.h
+++ b/include/linux/bcma/bcma_driver_chipcommon.h
@@ -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);
--
1.7.10.4
--
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