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authorMaxime Ripard <maxime.ripard@free-electrons.com>2016-10-11 17:46:01 +0200
committerLinus Walleij <linus.walleij@linaro.org>2016-10-24 16:30:14 +0200
commit07fe64ba213f36ca8f6ffd8c4d5893f022744fdb (patch)
tree254908917490fc91513c4cfe3e306aa067376382
parent42676fa4aa87eda4fc762df495d4bde2ddc4bfce (diff)
pinctrl: sunxi: Handle bias disable
So far, putting NO_PULL in allwinner,pull was ignored, behaving like if that property was not there at all. Obviously, this is not the right thing to do, and in that case, we really need to just disable the bias. Acked-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r--drivers/pinctrl/sunxi/pinctrl-sunxi.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
index 62a9d01..c44bf13 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -165,6 +165,8 @@ static int sunxi_pctrl_parse_bias_prop(struct device_node *node)
return -EINVAL;
switch (val) {
+ case SUN4I_PINCTRL_NO_PULL:
+ return PIN_CONFIG_BIAS_DISABLE;
case SUN4I_PINCTRL_PULL_UP:
return PIN_CONFIG_BIAS_PULL_UP;
case SUN4I_PINCTRL_PULL_DOWN:
@@ -401,6 +403,12 @@ static int sunxi_pconf_group_set(struct pinctrl_dev *pctldev,
| dlevel << sunxi_dlevel_offset(pin),
pctl->membase + sunxi_dlevel_reg(pin));
break;
+ case PIN_CONFIG_BIAS_DISABLE:
+ val = readl(pctl->membase + sunxi_pull_reg(pin));
+ mask = PULL_PINS_MASK << sunxi_pull_offset(pin);
+ writel((val & ~mask),
+ pctl->membase + sunxi_pull_reg(pin));
+ break;
case PIN_CONFIG_BIAS_PULL_UP:
val = readl(pctl->membase + sunxi_pull_reg(pin));
mask = PULL_PINS_MASK << sunxi_pull_offset(pin);