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path: root/drivers/power/reset/brcmstb-reboot.c
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Diffstat (limited to 'drivers/power/reset/brcmstb-reboot.c')
-rw-r--r--drivers/power/reset/brcmstb-reboot.c28
1 files changed, 19 insertions, 9 deletions
diff --git a/drivers/power/reset/brcmstb-reboot.c b/drivers/power/reset/brcmstb-reboot.c
index c523ea7a90ee..100606f9b3dc 100644
--- a/drivers/power/reset/brcmstb-reboot.c
+++ b/drivers/power/reset/brcmstb-reboot.c
@@ -16,6 +16,7 @@
#include <linux/init.h>
#include <linux/io.h>
#include <linux/jiffies.h>
+#include <linux/notifier.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
@@ -26,8 +27,6 @@
#include <linux/smp.h>
#include <linux/mfd/syscon.h>
-#include <asm/system_misc.h>
-
#define RESET_SOURCE_ENABLE_REG 1
#define SW_MASTER_RESET_REG 2
@@ -35,7 +34,8 @@ static struct regmap *regmap;
static u32 rst_src_en;
static u32 sw_mstr_rst;
-static void brcmstb_reboot(enum reboot_mode mode, const char *cmd)
+static int brcmstb_restart_handler(struct notifier_block *this,
+ unsigned long mode, void *cmd)
{
int rc;
u32 tmp;
@@ -43,31 +43,38 @@ static void brcmstb_reboot(enum reboot_mode mode, const char *cmd)
rc = regmap_write(regmap, rst_src_en, 1);
if (rc) {
pr_err("failed to write rst_src_en (%d)\n", rc);
- return;
+ return NOTIFY_DONE;
}
rc = regmap_read(regmap, rst_src_en, &tmp);
if (rc) {
pr_err("failed to read rst_src_en (%d)\n", rc);
- return;
+ return NOTIFY_DONE;
}
rc = regmap_write(regmap, sw_mstr_rst, 1);
if (rc) {
pr_err("failed to write sw_mstr_rst (%d)\n", rc);
- return;
+ return NOTIFY_DONE;
}
rc = regmap_read(regmap, sw_mstr_rst, &tmp);
if (rc) {
pr_err("failed to read sw_mstr_rst (%d)\n", rc);
- return;
+ return NOTIFY_DONE;
}
while (1)
;
+
+ return NOTIFY_DONE;
}
+static struct notifier_block brcmstb_restart_nb = {
+ .notifier_call = brcmstb_restart_handler,
+ .priority = 128,
+};
+
static int brcmstb_reboot_probe(struct platform_device *pdev)
{
int rc;
@@ -93,9 +100,12 @@ static int brcmstb_reboot_probe(struct platform_device *pdev)
return -EINVAL;
}
- arm_pm_restart = brcmstb_reboot;
+ rc = register_restart_handler(&brcmstb_restart_nb);
+ if (rc)
+ dev_err(&pdev->dev,
+ "cannot register restart handler (err=%d)\n", rc);
- return 0;
+ return rc;
}
static const struct of_device_id of_match[] = {