pinctrl: sunxi: H3 requires irq_read_needs_mux

It seems that on H3, just like on A10, when GPIOs are configured as
external interrupt data registers does not contain their value.  When
value is read, GPIO function must be temporary switched to input for
reads.

Signed-off-by: Krzysztof Adamski <k@japko.eu>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c
index 77d4cf047ceea71dd9bcc50bf0d4e59527d7aac8..11760bbe9d51acd4ebb4d44b82af2c525f68e1dd 100644 (file)
--- a/drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-h3.c
@@ -492,6 +492,7 @@ static const struct sunxi_pinctrl_desc sun8i_h3_pinctrl_data = {
        .pins = sun8i_h3_pins,
        .npins = ARRAY_SIZE(sun8i_h3_pins),
        .irq_banks = 2,
+       .irq_read_needs_mux = true
 };
 
 static int sun8i_h3_pinctrl_probe(struct platform_device *pdev)