Some devices need special sequences to be used when starting up. Add a uclass for this. Drivers can be added to provide specific features as needed. Signed-off-by: Simon Glass <sjg@chromium.org>master
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/*
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* Copyright (c) 2015 Google, Inc |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <common.h> |
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#include <dm.h> |
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#include <pwrseq.h> |
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int pwrseq_set_power(struct udevice *dev, bool enable) |
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{ |
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struct pwrseq_ops *ops = pwrseq_get_ops(dev); |
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if (!ops->set_power) |
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return -ENOSYS; |
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return ops->set_power(dev, enable); |
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} |
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UCLASS_DRIVER(pwrseq) = { |
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.id = UCLASS_PWRSEQ, |
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.name = "pwrseq", |
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}; |
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/*
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* Copyright (c) 2013 Google, Inc |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#ifndef __pwrseq_h |
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#define __pwrseq_h |
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struct pwrseq_ops { |
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int (*set_power)(struct udevice *dev, bool enable); |
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}; |
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#define pwrseq_get_ops(dev) ((struct pwrseq_ops *)(dev)->driver->ops) |
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int pwrseq_set_power(struct udevice *dev, bool enable); |
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#endif |
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