platform/geode/geode-common.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * Shared helpers to register GPIO-connected buttons and LEDs
8 #include <linux/gpio/machine.h>
9 #include <linux/gpio/property.h>
11 #include <linux/leds.h>
15 #include "geode-common.h"
18 	.name = "cs5535-gpio",
22 	PROPERTY_ENTRY_U32("poll-interval", 20),
27 	.name = "geode-gpio-keys",
32 	{ /* Placeholder for GPIO property */ },
35 	PROPERTY_ENTRY_U32("debounce-interval", 100),
52  * Creates gpio-keys-polled device for the restart key.
55  * because it registers gpiochip software node used by both gpio-keys and
56  * leds-gpio devices.
61 		.name	= "gpio-keys-polled",  in geode_create_restart_key()
73 		pr_err("failed to register gpio-keys software nodes: %d\n", err);  in geode_create_restart_key()
82 		pr_err("failed to create gpio-keys device: %d\n", err);  in geode_create_restart_key()
91 	.name = "geode-leds",
96 int __init geode_create_leds(const char *label, const struct geode_led *leds,  in geode_create_leds()  argument
103 		.name	= "leds-gpio",  in geode_create_leds()
112 		pr_err("%s: too many LEDs\n", __func__);  in geode_create_leds()
113 		return -EINVAL;  in geode_create_leds()
118 		return -ENOMEM;  in geode_create_leds()
122 	 * "linux,default-trigger", and am empty terminator.  in geode_create_leds()
126 		err = -ENOMEM;  in geode_create_leds()
134 			err = -ENOMEM;  in geode_create_leds()
140 					    leds[i].pin, GPIO_ACTIVE_LOW);  in geode_create_leds()
142 			PROPERTY_ENTRY_STRING("linux,default-trigger",  in geode_create_leds()
143 					      leds[i].default_on ?  in geode_create_leds()
144 					      "default-on" : "default-off");  in geode_create_leds()
172 	while (--i >= 0)  in geode_create_leds()