41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
101 lines
2.0 KiB
C
101 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <led.h>
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#include <dm/device-internal.h>
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#include <dm/root.h>
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#include <dm/uclass-internal.h>
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int led_get_by_label(const char *label, struct udevice **devp)
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{
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struct udevice *dev;
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struct uclass *uc;
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int ret;
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ret = uclass_get(UCLASS_LED, &uc);
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if (ret)
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return ret;
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uclass_foreach_dev(dev, uc) {
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struct led_uc_plat *uc_plat = dev_get_uclass_platdata(dev);
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/* Ignore the top-level LED node */
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if (uc_plat->label && !strcmp(label, uc_plat->label))
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return uclass_get_device_tail(dev, 0, devp);
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}
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return -ENODEV;
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}
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int led_set_state(struct udevice *dev, enum led_state_t state)
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{
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struct led_ops *ops = led_get_ops(dev);
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if (!ops->set_state)
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return -ENOSYS;
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return ops->set_state(dev, state);
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}
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enum led_state_t led_get_state(struct udevice *dev)
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{
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struct led_ops *ops = led_get_ops(dev);
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if (!ops->get_state)
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return -ENOSYS;
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return ops->get_state(dev);
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}
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#ifdef CONFIG_LED_BLINK
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int led_set_period(struct udevice *dev, int period_ms)
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{
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struct led_ops *ops = led_get_ops(dev);
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if (!ops->set_period)
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return -ENOSYS;
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return ops->set_period(dev, period_ms);
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}
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#endif
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int led_default_state(void)
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{
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struct udevice *dev;
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struct uclass *uc;
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const char *default_state;
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int ret;
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ret = uclass_get(UCLASS_LED, &uc);
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if (ret)
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return ret;
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for (uclass_find_first_device(UCLASS_LED, &dev);
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dev;
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uclass_find_next_device(&dev)) {
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default_state = dev_read_string(dev, "default-state");
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if (!default_state)
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continue;
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ret = device_probe(dev);
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if (ret)
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return ret;
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if (!strncmp(default_state, "on", 2))
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led_set_state(dev, LEDST_ON);
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else if (!strncmp(default_state, "off", 3))
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led_set_state(dev, LEDST_OFF);
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/* default-state = "keep" : device is only probed */
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}
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return ret;
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}
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UCLASS_DRIVER(led) = {
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.id = UCLASS_LED,
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.name = "led",
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.per_device_platdata_auto = sizeof(struct led_uc_plat),
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};
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