diff options
| author | Pankaj Dubey <pankaj.dubey@samsung.com> | 2014-11-22 17:10:23 +0300 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2014-11-22 17:10:23 +0300 |
| commit | 8cfc7fdd33080e30b86d21b1a8c9ad0686427ddc (patch) | |
| tree | 38bb9a77691ef9b4448205c694bdfa4f5caaf367 /arch/arm/mach-exynos/pmu.c | |
| parent | 5e6473f422909a9f929619c04c6bab7620531b69 (diff) | |
| download | linux-8cfc7fdd33080e30b86d21b1a8c9ad0686427ddc.tar.xz | |
ARM: EXYNOS: move restart code into pmu driver
Let's register restart handler from PMU driver for restart
functionality. So that we can remove restart hooks from
machine specific file, and thus moving ahead when PMU moved
to driver folder, this functionality can be reused for ARM64
based Exynos SoC's.
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Vivek Gautam <gautam.vivek@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-exynos/pmu.c')
| -rw-r--r-- | arch/arm/mach-exynos/pmu.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/pmu.c b/arch/arm/mach-exynos/pmu.c index fcb3b672e39b..ccb012009cd8 100644 --- a/arch/arm/mach-exynos/pmu.c +++ b/arch/arm/mach-exynos/pmu.c @@ -11,8 +11,11 @@ #include <linux/io.h> #include <linux/of.h> +#include <linux/of_address.h> #include <linux/platform_device.h> #include <linux/delay.h> +#include <linux/notifier.h> +#include <linux/reboot.h> #include "exynos-pmu.h" @@ -874,6 +877,13 @@ static void exynos5420_pmu_init(void) pr_info("EXYNOS5420 PMU initialized\n"); } +static int pmu_restart_notify(struct notifier_block *this, + unsigned long code, void *unused) +{ + pmu_raw_writel(0x1, EXYNOS_SWRESET); + + return NOTIFY_DONE; +} static const struct exynos_pmu_data exynos3250_pmu_data = { .pmu_config = exynos3250_pmu_config, @@ -932,11 +942,20 @@ static const struct of_device_id exynos_pmu_of_device_ids[] = { { /*sentinel*/ }, }; +/* + * Exynos PMU restart notifier, handles restart functionality + */ +static struct notifier_block pmu_restart_handler = { + .notifier_call = pmu_restart_notify, + .priority = 128, +}; + static int exynos_pmu_probe(struct platform_device *pdev) { const struct of_device_id *match; struct device *dev = &pdev->dev; struct resource *res; + int ret; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); pmu_base_addr = devm_ioremap_resource(dev, res); @@ -961,6 +980,10 @@ static int exynos_pmu_probe(struct platform_device *pdev) platform_set_drvdata(pdev, pmu_context); + ret = register_restart_handler(&pmu_restart_handler); + if (ret) + dev_warn(dev, "can't register restart handler err=%d\n", ret); + dev_dbg(dev, "Exynos PMU Driver probe done\n"); return 0; } |