mirror of
https://github.com/torvalds/linux
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81d7cac4d1
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> [mpe: Fixup maple/setup.c which needs platform_device] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230724210247.778034-1-robh@kernel.org
85 lines
1.7 KiB
C
85 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Suspend/resume support
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*
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* Copyright 2009 MontaVista Software, Inc.
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*
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* Author: Anton Vorontsov <avorontsov@ru.mvista.com>
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*/
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/export.h>
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#include <linux/suspend.h>
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#include <linux/delay.h>
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#include <linux/mod_devicetable.h>
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#include <linux/of_address.h>
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#include <linux/platform_device.h>
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struct pmc_regs {
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__be32 devdisr;
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__be32 devdisr2;
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__be32 :32;
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__be32 :32;
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__be32 pmcsr;
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#define PMCSR_SLP (1 << 17)
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};
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static struct device *pmc_dev;
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static struct pmc_regs __iomem *pmc_regs;
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static int pmc_suspend_enter(suspend_state_t state)
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{
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int ret;
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setbits32(&pmc_regs->pmcsr, PMCSR_SLP);
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/* At this point, the CPU is asleep. */
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/* Upon resume, wait for SLP bit to be clear. */
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ret = spin_event_timeout((in_be32(&pmc_regs->pmcsr) & PMCSR_SLP) == 0,
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10000, 10) ? 0 : -ETIMEDOUT;
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if (ret)
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dev_err(pmc_dev, "tired waiting for SLP bit to clear\n");
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return ret;
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}
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static int pmc_suspend_valid(suspend_state_t state)
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{
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if (state != PM_SUSPEND_STANDBY)
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return 0;
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return 1;
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}
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static const struct platform_suspend_ops pmc_suspend_ops = {
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.valid = pmc_suspend_valid,
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.enter = pmc_suspend_enter,
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};
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static int pmc_probe(struct platform_device *ofdev)
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{
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pmc_regs = of_iomap(ofdev->dev.of_node, 0);
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if (!pmc_regs)
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return -ENOMEM;
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pmc_dev = &ofdev->dev;
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suspend_set_ops(&pmc_suspend_ops);
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return 0;
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}
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static const struct of_device_id pmc_ids[] = {
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{ .compatible = "fsl,mpc8548-pmc", },
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{ .compatible = "fsl,mpc8641d-pmc", },
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{ },
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};
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static struct platform_driver pmc_driver = {
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.driver = {
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.name = "fsl-pmc",
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.of_match_table = pmc_ids,
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},
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.probe = pmc_probe,
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};
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builtin_platform_driver(pmc_driver);
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