power/reset: hisi: Register with kernel restart handler
Register with kernel restart handler instead of setting arm_pm_restart directly. Cc: Haojian Zhuang <haojian.zhuang@linaro.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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@ -14,27 +14,36 @@
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/notifier.h>
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#include <linux/of_address.h>
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#include <linux/platform_device.h>
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#include <linux/reboot.h>
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#include <asm/proc-fns.h>
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#include <asm/system_misc.h>
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static void __iomem *base;
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static u32 reboot_offset;
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static void hisi_restart(enum reboot_mode mode, const char *cmd)
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static int hisi_restart_handler(struct notifier_block *this,
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unsigned long mode, void *cmd)
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{
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writel_relaxed(0xdeadbeef, base + reboot_offset);
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while (1)
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cpu_do_idle();
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return NOTIFY_DONE;
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}
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static struct notifier_block hisi_restart_nb = {
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.notifier_call = hisi_restart_handler,
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.priority = 128,
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};
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static int hisi_reboot_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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int err;
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base = of_iomap(np, 0);
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if (!base) {
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@ -47,9 +56,12 @@ static int hisi_reboot_probe(struct platform_device *pdev)
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return -EINVAL;
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}
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arm_pm_restart = hisi_restart;
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err = register_restart_handler(&hisi_restart_nb);
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if (err)
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dev_err(&pdev->dev, "cannot register restart handler (err=%d)\n",
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err);
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return 0;
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return err;
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}
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static struct of_device_id hisi_reboot_of_match[] = {
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