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power/reset: brcmstb: Register with kernel restart handler

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Register with kernel restart handler instead of setting arm_pm_restart directly.

Cc: Marc Carino <marc.ceeeee@gmail.com>
Cc: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2014-09-30 10:48:36 -07:00 committed by Sebastian Reichel
parent 6724534c79
commit 6136c41ae9
1 changed files with 19 additions and 9 deletions
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28
drivers/power/reset/brcmstb-reboot.c
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@ -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[] = {