From ebd6651418b64ff358e105d611ad993f534b8ea7 Mon Sep 17 00:00:00 2001 From: Paul Cercueil Date: Tue, 21 Aug 2018 18:42:33 +0200 Subject: [PATCH] pinctrl: ingenic: Implement .get_direction for GPIO chips This allows to read from debugfs whether the GPIOs requested are set as input or output. Signed-off-by: Paul Cercueil Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-ingenic.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/pinctrl/pinctrl-ingenic.c b/drivers/pinctrl/pinctrl-ingenic.c index 7511573..f4aa7d4 100644 --- a/drivers/pinctrl/pinctrl-ingenic.c +++ b/drivers/pinctrl/pinctrl-ingenic.c @@ -699,6 +699,21 @@ static inline bool ingenic_get_pin_config(struct ingenic_pinctrl *jzpc, return val & BIT(idx); } +static int ingenic_gpio_get_direction(struct gpio_chip *gc, unsigned int offset) +{ + struct ingenic_gpio_chip *jzgc = gpiochip_get_data(gc); + struct ingenic_pinctrl *jzpc = jzgc->jzpc; + unsigned int pin = gc->base + offset; + + if (jzpc->version >= ID_JZ4770) + return ingenic_get_pin_config(jzpc, pin, JZ4770_GPIO_PAT1); + + if (ingenic_get_pin_config(jzpc, pin, JZ4740_GPIO_SELECT)) + return true; + + return !ingenic_get_pin_config(jzpc, pin, JZ4740_GPIO_DIR); +} + static const struct pinctrl_ops ingenic_pctlops = { .get_groups_count = pinctrl_generic_get_group_count, .get_group_name = pinctrl_generic_get_group_name, @@ -1003,6 +1018,7 @@ static int __init ingenic_gpio_probe(struct ingenic_pinctrl *jzpc, jzgc->gc.get = ingenic_gpio_get; jzgc->gc.direction_input = ingenic_gpio_direction_input; jzgc->gc.direction_output = ingenic_gpio_direction_output; + jzgc->gc.get_direction = ingenic_gpio_get_direction; if (of_property_read_bool(node, "gpio-ranges")) { jzgc->gc.request = gpiochip_generic_request; -- 2.7.4