Messages in this thread Patch in this message | | | From | Alexandre Belloni <> | Subject | [PATCH] pinctrl: at91: disable Pull-Down or Pull-Up property before enabling Pull-Up or Pull-Down. | Date | Thu, 11 Sep 2014 16:40:15 +0200 |
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From: Wenyou Yang <wenyou.yang@atmel.com>
Because the pin's Pull-Up and Pull-Down property is mutually exclusive.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> --- drivers/pinctrl/pinctrl-at91.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c index a3d8902438c7..ee9c0b7aad14 100644 --- a/drivers/pinctrl/pinctrl-at91.c +++ b/drivers/pinctrl/pinctrl-at91.c @@ -371,6 +371,9 @@ static unsigned at91_mux_get_pullup(void __iomem *pio, unsigned pin) static void at91_mux_set_pullup(void __iomem *pio, unsigned mask, bool on) { + if (on) + writel_relaxed(mask, pio + PIO_PPDDR); + writel_relaxed(mask, pio + (on ? PIO_PUER : PIO_PUDR)); } @@ -499,6 +502,9 @@ static bool at91_mux_pio3_get_pulldown(void __iomem *pio, unsigned pin) static void at91_mux_pio3_set_pulldown(void __iomem *pio, unsigned mask, bool is_on) { + if (is_on) + __raw_writel(mask, pio + PIO_PUDR); + __raw_writel(mask, pio + (is_on ? PIO_PPDER : PIO_PPDDR)); } -- 1.9.1
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