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| author | David Cohen <david.a.cohen@linux.intel.com> | 2014-10-14 21:54:37 +0400 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-10-28 13:16:26 +0300 |
| commit | d90c33818967c5e5371961604ad98b4dea4fa3f4 (patch) | |
| tree | 977bffd928f148af7248209166c282e16aeb3dac /drivers | |
| parent | c11f042b8607f38410351fb30c224783f2b24fb7 (diff) | |
| download | linux-d90c33818967c5e5371961604ad98b4dea4fa3f4.tar.xz | |
pinctrl: baytrail: show output gpio state correctly on Intel Baytrail
Even if a gpio pin is set to output, we still need to set INPUT_EN
functionality (by clearing INPUT_EN bit) to be able to read the pin's
level.
E.g. without this change, we'll always read low level state from sysfs.
Cc: <stable@vger.kernel.org> # v3.14+
Cc: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pinctrl/pinctrl-baytrail.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pinctrl/pinctrl-baytrail.c b/drivers/pinctrl/pinctrl-baytrail.c index b83ec87c71fe..9dc38140194b 100644 --- a/drivers/pinctrl/pinctrl-baytrail.c +++ b/drivers/pinctrl/pinctrl-baytrail.c @@ -322,7 +322,7 @@ static int byt_gpio_direction_output(struct gpio_chip *chip, "Potential Error: Setting GPIO with direct_irq_en to output"); reg_val = readl(reg) | BYT_DIR_MASK; - reg_val &= ~BYT_OUTPUT_EN; + reg_val &= ~(BYT_OUTPUT_EN | BYT_INPUT_EN); if (value) writel(reg_val | BYT_LEVEL, reg); |