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power/reset: st-poweroff: Register with kernel restart handler

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Register with kernel restart handler instead of setting arm_pm_restart
directly. Select high priority since the restart handler is instantiated
through devicetree, indicating that it should be used if configured.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Guenter Roeck 2015-01-25 12:30:43 -08:00 committed by Sebastian Reichel
parent b2b3a8b934
commit 453fe4f11c
1 changed files with 11 additions and 6 deletions
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17
drivers/power/reset/st-poweroff.c
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@ -15,10 +15,9 @@
#include <linux/of_platform.h> #include <linux/of_platform.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/mfd/syscon.h> #include <linux/mfd/syscon.h>
#include <linux/reboot.h>
#include <linux/regmap.h> #include <linux/regmap.h>
#include <asm/system_misc.h>
struct reset_syscfg { struct reset_syscfg {
struct regmap *regmap; struct regmap *regmap;
/* syscfg used for reset */ /* syscfg used for reset */
@ -75,7 +74,8 @@ static struct reset_syscfg stid127_reset = {
static struct reset_syscfg *st_restart_syscfg; static struct reset_syscfg *st_restart_syscfg;
static void st_restart(enum reboot_mode reboot_mode, const char *cmd) static int st_restart(struct notifier_block *this, unsigned long mode,
void *cmd)
{ {
/* reset syscfg updated */ /* reset syscfg updated */
regmap_update_bits(st_restart_syscfg->regmap, regmap_update_bits(st_restart_syscfg->regmap,
@ -88,8 +88,15 @@ static void st_restart(enum reboot_mode reboot_mode, const char *cmd)
st_restart_syscfg->offset_rst_msk, st_restart_syscfg->offset_rst_msk,
st_restart_syscfg->mask_rst_msk, st_restart_syscfg->mask_rst_msk,
0); 0);
return NOTIFY_DONE;
} }
static struct notifier_block st_restart_nb = {
.notifier_call = st_restart,
.priority = 192,
};
static struct of_device_id st_reset_of_match[] = { static struct of_device_id st_reset_of_match[] = {
{ {
.compatible = "st,stih415-restart", .compatible = "st,stih415-restart",
@ -126,9 +133,7 @@ static int st_reset_probe(struct platform_device *pdev)
return PTR_ERR(st_restart_syscfg->regmap); return PTR_ERR(st_restart_syscfg->regmap);
} }
arm_pm_restart = st_restart; return register_restart_handler(&st_restart_nb);
return 0;
} }
static struct platform_driver st_reset_driver = { static struct platform_driver st_reset_driver = {