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263291fa44
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it was 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. Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://lore.kernel.org/all/20230718143211.1066810-1-robh@kernel.org/ Signed-off-by: Rob Herring <robh@kernel.org>
72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* power.c: Power management driver.
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*
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* Copyright (C) 1999, 2007, 2008 David S. Miller (davem@davemloft.net)
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*/
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#include <linux/kernel.h>
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#include <linux/export.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/reboot.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <asm/prom.h>
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#include <asm/io.h>
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static void __iomem *power_reg;
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static irqreturn_t power_handler(int irq, void *dev_id)
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{
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orderly_poweroff(true);
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/* FIXME: Check registers for status... */
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return IRQ_HANDLED;
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}
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static int has_button_interrupt(unsigned int irq, struct device_node *dp)
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{
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if (irq == 0xffffffff)
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return 0;
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if (!of_property_read_bool(dp, "button"))
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return 0;
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return 1;
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}
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static int power_probe(struct platform_device *op)
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{
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struct resource *res = &op->resource[0];
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unsigned int irq = op->archdata.irqs[0];
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power_reg = of_ioremap(res, 0, 0x4, "power");
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printk(KERN_INFO "%pOFn: Control reg at %llx\n",
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op->dev.of_node, res->start);
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if (has_button_interrupt(irq, op->dev.of_node)) {
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if (request_irq(irq,
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power_handler, 0, "power", NULL) < 0)
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printk(KERN_ERR "power: Cannot setup IRQ handler.\n");
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}
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return 0;
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}
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static const struct of_device_id power_match[] = {
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{
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.name = "power",
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},
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{},
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};
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static struct platform_driver power_driver = {
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.probe = power_probe,
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.driver = {
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.name = "power",
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.of_match_table = power_match,
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},
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};
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builtin_platform_driver(power_driver);
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