On Mon, Oct 3, 2016 at 6:21 PM, Maxime Ripard
<maxime.ripard@xxxxxxxxxxxxxxxxxx> wrote:
> 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.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
I've done the same in my patches.
Acked-by: Chen-Yu Tsai <wens@xxxxxxxx>
> ---
> drivers/pinctrl/sunxi/pinctrl-sunxi.c | 8 ++++++++
> 1 file changed, 8 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
> index 5be455d5e252..6f6f1e0011e2 100644
> --- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
> +++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
> @@ -166,6 +166,8 @@ 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:
> @@ -402,6 +404,12 @@ 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);
> --
> git-series 0.8.10
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