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https://github.com/brain-hackers/u-boot-brain
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6516f81b64
Add a check for the gpio_request() function return value and do not try to configure the GPIO if the gpio_request() call fails. Also, print an error message indicating the gpio_request() has failed. Signed-off-by: Igor Grinberg <grinberg@compulab.co.il> Tested-by: Ilya Ledvich <ilya@compulab.co.il>
31 lines
633 B
C
31 lines
633 B
C
/*
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* Status LED driver based on GPIO access conventions of Linux
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*
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* Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
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* Licensed under the GPL-2 or later.
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*/
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#include <common.h>
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#include <status_led.h>
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#include <asm/gpio.h>
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void __led_init(led_id_t mask, int state)
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{
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if (gpio_request(mask, "gpio_led") != 0) {
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printf("%s: failed requesting GPIO%lu!\n", __func__, mask);
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return;
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}
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gpio_direction_output(mask, state == STATUS_LED_ON);
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}
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void __led_set(led_id_t mask, int state)
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{
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gpio_set_value(mask, state == STATUS_LED_ON);
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}
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void __led_toggle(led_id_t mask)
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{
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gpio_set_value(mask, !gpio_get_value(mask));
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}
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