mirror of https://github.com/hak5/openwrt.git
46 lines
1.5 KiB
Diff
46 lines
1.5 KiB
Diff
From 183148e0789bee1cd5c46ba49afcb211f636f8a2 Mon Sep 17 00:00:00 2001
|
|
From: Gabor Juhos <juhosg@freemail.hu>
|
|
Date: Mon, 15 Jan 2018 15:01:14 +0100
|
|
Subject: [PATCH] leds: gpio: allow to use OPEN_{DRAIN,SOURCE} flags with
|
|
legacy GPIOs
|
|
|
|
LEDs which are connected to open-source or open-drain type of GPIO lines
|
|
can be used only, if those are defined via devicetree.
|
|
Add two new fields to 'struct gpio_led' in order to make it possible to
|
|
specify this type of GPIO lines to the leds-gpio driver via platform data.
|
|
Also update the create_gpio_led() function to set the GPIOF_OPEN_DRAIN and
|
|
GPIOF_OPEN_SOURCE flags for the given GPIO line.
|
|
|
|
Signed-off-by: Gabor Juhos <juhosg@freemail.hu>
|
|
---
|
|
drivers/leds/leds-gpio.c | 6 ++++++
|
|
include/linux/leds.h | 2 ++
|
|
2 files changed, 8 insertions(+)
|
|
|
|
--- a/drivers/leds/leds-gpio.c
|
|
+++ b/drivers/leds/leds-gpio.c
|
|
@@ -100,6 +100,12 @@ static int create_gpio_led(const struct
|
|
if (template->active_low)
|
|
flags |= GPIOF_ACTIVE_LOW;
|
|
|
|
+ if (template->open_drain)
|
|
+ flags |= GPIOF_OPEN_DRAIN;
|
|
+
|
|
+ if (template->open_source)
|
|
+ flags |= GPIOF_OPEN_SOURCE;
|
|
+
|
|
ret = devm_gpio_request_one(parent, template->gpio, flags,
|
|
template->name);
|
|
if (ret < 0)
|
|
--- a/include/linux/leds.h
|
|
+++ b/include/linux/leds.h
|
|
@@ -380,6 +380,8 @@ struct gpio_led {
|
|
unsigned panic_indicator : 1;
|
|
unsigned default_state : 2;
|
|
/* default_state should be one of LEDS_GPIO_DEFSTATE_(ON|OFF|KEEP) */
|
|
+ unsigned open_drain : 1;
|
|
+ unsigned open_source : 1;
|
|
struct gpio_desc *gpiod;
|
|
};
|
|
#define LEDS_GPIO_DEFSTATE_OFF 0
|