diff options
| author | Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com> | 2011-09-19 16:15:11 +0200 |
|---|---|---|
| committer | Philippe Langlais <philippe.langlais@stericsson.com> | 2012-05-22 11:02:52 +0200 |
| commit | bd55bf15187ac6f4fd87717018dea162b3290d80 (patch) | |
| tree | 37437011da93872e4c5d5e94c73b2e33de6e1b37 | |
| parent | c982d313ab5cf4349fc6e0cb4b1597427212a980 (diff) | |
gpio: ab8500: add api to enable pulldown
Change-Id: Ia8c31da2cbfef4f8cb5f6e0ccd5b70dcf0bbd9de
Signed-off-by: Bibek Basu <bibek.basu@stericsson.com>
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/32114
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Tested-by: Jonas ABERG <jonas.aberg@stericsson.com>
| -rw-r--r-- | drivers/gpio/gpio-ab8500.c | 17 | ||||
| -rw-r--r-- | include/linux/mfd/abx500/ab8500-gpio.h | 3 |
2 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-ab8500.c b/drivers/gpio/gpio-ab8500.c index dd95cb3c32d..b71bb723c0e 100644 --- a/drivers/gpio/gpio-ab8500.c +++ b/drivers/gpio/gpio-ab8500.c @@ -507,6 +507,23 @@ static int __devexit ab8500_gpio_remove(struct platform_device *pdev) return 0; } +int ab8500_config_pulldown(struct device *dev, + enum ab8500_pin gpio, bool enable) +{ + u8 offset = gpio - AB8500_PIN_GPIO1; + u8 pos = offset % 8; + u8 val = enable ? 0 : 1; + u8 reg = AB8500_GPIO_PUD1_REG + (offset / 8); + int ret; + + ret = abx500_mask_and_set_register_interruptible(dev, + AB8500_MISC, reg, 1 << pos, val << pos); + if (ret < 0) + dev_err(dev, "%s write failed\n", __func__); + return ret; +} +EXPORT_SYMBOL(ab8500_config_pulldown); + /* * ab8500_gpio_config_select() * diff --git a/include/linux/mfd/abx500/ab8500-gpio.h b/include/linux/mfd/abx500/ab8500-gpio.h index 94e85caf71f..48325dbce17 100644 --- a/include/linux/mfd/abx500/ab8500-gpio.h +++ b/include/linux/mfd/abx500/ab8500-gpio.h @@ -67,6 +67,9 @@ enum ab8500_pin { AB8500_PIN_GPIO42, }; +int ab8500_config_pulldown(struct device *dev, + enum ab8500_pin gpio, bool enable); + int ab8500_gpio_config_select(struct device *dev, enum ab8500_pin gpio, bool gpio_select); |