diff options
| author | Hauke Mehrtens <hauke@hauke-m.de> | 2012-11-20 22:24:28 +0000 |
|---|---|---|
| committer | John Crispin <blogic@openwrt.org> | 2012-11-21 21:55:51 +0100 |
| commit | ea3488f4696fe22811eb19bee7088b732d3f8fe0 (patch) | |
| tree | 21928c292726fb44f831353deee3af0ee032e7b0 /drivers/bcma | |
| parent | ef85fb28305fad7617f307383ebba554a3a891a2 (diff) | |
| download | linux-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.c | 30 |
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) { |