4.19-stable review patch. If anyone has any objections, please let me know.
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From: Thomas Blocher thomas.blocher@ek-dev.de
[ Upstream commit 752f387faaae0ae2e84d3f496922524785e77d60 ]
pinctrl-at91 currently does not support the gpio-groups devicetree property and has no pin-range. Because of this at91 gpios stopped working since patch commit 2ab73c6d8323fa1e ("gpio: Support GPIO controllers without pin-ranges") This was discussed in the patches commit fc328a7d1fcce263 ("gpio: Revert regression in sysfs-gpio (gpiolib.c)") commit 56e337f2cf132632 ("Revert "gpio: Revert regression in sysfs-gpio (gpiolib.c)"")
As a workaround manually set pin-range via gpiochip_add_pin_range() until a) pinctrl-at91 is reworked to support devicetree gpio-groups b) another solution as mentioned in commit 56e337f2cf132632 ("Revert "gpio: Revert regression in sysfs-gpio (gpiolib.c)"") is found
Signed-off-by: Thomas Blocher thomas.blocher@ek-dev.de Link: https://lore.kernel.org/5b992862-355d-f0de-cd3d-ff99e67a4ff1@ek-dev.de Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pinctrl/pinctrl-at91.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c index ad01cc5798232..48374945b2d7b 100644 --- a/drivers/pinctrl/pinctrl-at91.c +++ b/drivers/pinctrl/pinctrl-at91.c @@ -1290,8 +1290,11 @@ static int at91_pinctrl_probe(struct platform_device *pdev)
/* We will handle a range of GPIO pins */ for (i = 0; i < gpio_banks; i++) - if (gpio_chips[i]) + if (gpio_chips[i]) { pinctrl_add_gpio_range(info->pctl, &gpio_chips[i]->range); + gpiochip_add_pin_range(&gpio_chips[i]->chip, dev_name(info->pctl->dev), 0, + gpio_chips[i]->range.pin_base, gpio_chips[i]->range.npins); + }
dev_info(&pdev->dev, "initialized AT91 pinctrl driver\n");