diff options
| -rw-r--r-- | target/linux/lantiq/patches-4.14/0002-gpio-stp-xway-Implement-get-callback.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-4.14/0002-gpio-stp-xway-Implement-get-callback.patch b/target/linux/lantiq/patches-4.14/0002-gpio-stp-xway-Implement-get-callback.patch new file mode 100644 index 0000000000..c32b3d6bba --- /dev/null +++ b/target/linux/lantiq/patches-4.14/0002-gpio-stp-xway-Implement-get-callback.patch @@ -0,0 +1,47 @@ +From 5b9b2b5284f81941972105b13337c58489ea8fca Mon Sep 17 00:00:00 2001 +From: Mathias Kresin <dev@kresin.me> +Date: Thu, 28 Jun 2018 21:57:40 +0200 +Subject: [PATCH] gpio: stp-xway: Implement get callback + +Add an implementation to get the current GPIO state. + +The callback is used by the leds-gpio driver for example, in case the +current LED/GPIO state should be kept during driver load. + +Signed-off-by: Mathias Kresin <dev@kresin.me> +Signed-off-by: Linus Walleij <linus.walleij@linaro.org> +--- + drivers/gpio/gpio-stp-xway.c | 15 +++++++++++++++ + 1 file changed, 15 insertions(+) + +--- a/drivers/gpio/gpio-stp-xway.c ++++ b/drivers/gpio/gpio-stp-xway.c +@@ -91,6 +91,20 @@ struct xway_stp { + }; + + /** ++ * xway_stp_get() - gpio_chip->get - get gpios. ++ * @gc: Pointer to gpio_chip device structure. ++ * @gpio: GPIO signal number. ++ * ++ * Gets the shadow value. ++ */ ++static int xway_stp_get(struct gpio_chip *gc, unsigned int gpio) ++{ ++ struct xway_stp *chip = gpiochip_get_data(gc); ++ ++ return (xway_stp_r32(chip->virt, XWAY_STP_CPU0) & BIT(gpio)); ++} ++ ++/** + * xway_stp_set() - gpio_chip->set - set gpios. + * @gc: Pointer to gpio_chip device structure. + * @gpio: GPIO signal number. +@@ -215,6 +229,7 @@ static int xway_stp_probe(struct platfor + chip->gc.parent = &pdev->dev; + chip->gc.label = "stp-xway"; + chip->gc.direction_output = xway_stp_dir_out; ++ chip->gc.get = xway_stp_get; + chip->gc.set = xway_stp_set; + chip->gc.request = xway_stp_request; + chip->gc.base = -1; |