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27 lines
670 B
27 lines
670 B
/* |
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* Copyright (c) 2024 Leon Rinkel <leon@rinkel.me> |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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* |
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* Automatically turns on backlight if display is configured, i.e. display DT |
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* node has status okay. |
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*/ |
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#include <zephyr/devicetree.h> |
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#include <zephyr/drivers/gpio.h> |
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#include <zephyr/init.h> |
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#define DISPLAY_NODE DT_CHOSEN(zephyr_display) |
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#if DT_NODE_HAS_STATUS(DISPLAY_NODE, okay) |
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static const struct gpio_dt_spec backlight = GPIO_DT_SPEC_GET(DT_ALIAS(backlight), gpios); |
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#endif |
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void board_late_init_hook(void) |
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{ |
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#if DT_NODE_HAS_STATUS(DISPLAY_NODE, okay) |
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if (gpio_is_ready_dt(&backlight)) { |
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gpio_pin_configure_dt(&backlight, GPIO_OUTPUT_ACTIVE); |
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} |
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#endif |
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}
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