1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
From 62712a1a87724194500e1786a65578964838f4d8 Mon Sep 17 00:00:00 2001
From: Nick Bulleid <nedbulleid@fastmail.com>
Date: Thu, 10 May 2018 21:57:02 +0100
Subject: [PATCH 298/454] Add ability to export gpio used by gpio-poweroff
Signed-off-by: Nick Bulleid <nedbulleid@fastmail.com>
---
drivers/power/reset/gpio-poweroff.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/power/reset/gpio-poweroff.c
+++ b/drivers/power/reset/gpio-poweroff.c
@@ -50,6 +50,7 @@ static int gpio_poweroff_probe(struct pl
bool input = false;
enum gpiod_flags flags;
bool force = false;
+ bool export = false;
/* If a pm_power_off function has already been added, leave it alone */
force = of_property_read_bool(pdev->dev.of_node, "force");
@@ -70,6 +71,12 @@ static int gpio_poweroff_probe(struct pl
if (IS_ERR(reset_gpio))
return PTR_ERR(reset_gpio);
+ export = of_property_read_bool(pdev->dev.of_node, "export");
+ if (export) {
+ gpiod_export(reset_gpio, false);
+ gpiod_export_link(&pdev->dev, "poweroff-gpio", reset_gpio);
+ }
+
pm_power_off = &gpio_poweroff_do_poweroff;
return 0;
}
@@ -79,6 +86,8 @@ static int gpio_poweroff_remove(struct p
if (pm_power_off == &gpio_poweroff_do_poweroff)
pm_power_off = NULL;
+ gpiod_unexport(reset_gpio);
+
return 0;
}
|
