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power/reset: at91: Register with kernel restart handler 

Register with kernel restart handler instead of setting arm_pm_restart
directly. Register with high priority since the driver unconditionally
overwrites other restart handlers if instantiated.

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 12:30:41 -08:00 committed by Sebastian Reichel
parent 25a5b57dd7
commit 481ff6ff96
1 changed files with 18 additions and 10 deletions
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28
drivers/power/reset/at91-reset.c
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@ -17,8 +17,6 @@
#include <linux/platform_device.h>
#include <linux/reboot.h>
#include <asm/system_misc.h>
#include <soc/at91/at91sam9_ddrsdr.h>
#include <soc/at91/at91sam9_sdramc.h>
@ -54,7 +52,8 @@ static void __iomem *at91_ramc_base[2], *at91_rstc_base;
* reset register it can be left driving the data bus and
* killing the chance of a subsequent boot from NAND
*/
static void at91sam9260_restart(enum reboot_mode mode, const char *cmd)
static int at91sam9260_restart(struct notifier_block *this, unsigned long mode,
void *cmd)
{
asm volatile(
/* Align to cache lines */
@ -76,9 +75,12 @@ static void at91sam9260_restart(enum reboot_mode mode, const char *cmd)
"r" (1),
"r" (AT91_SDRAMC_LPCB_POWER_DOWN),
"r" (AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST));
return NOTIFY_DONE;
}
static void at91sam9g45_restart(enum reboot_mode mode, const char *cmd)
static int at91sam9g45_restart(struct notifier_block *this, unsigned long mode,
void *cmd)
{
asm volatile(
/*
@ -117,6 +119,8 @@ static void at91sam9g45_restart(enum reboot_mode mode, const char *cmd)
"r" (AT91_DDRSDRC_LPCB_POWER_DOWN),
"r" (AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST)
: "r0");
return NOTIFY_DONE;
}
static void __init at91_reset_status(struct platform_device *pdev)
@ -161,6 +165,10 @@ static struct of_device_id at91_reset_of_match[] = {
{ /* sentinel */ }
};
static struct notifier_block at91_restart_nb = {
.priority = 192,
};
static int at91_reset_of_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
@ -183,9 +191,8 @@ static int at91_reset_of_probe(struct platform_device *pdev)
}
match = of_match_node(at91_reset_of_match, pdev->dev.of_node);
arm_pm_restart = match->data;
return 0;
at91_restart_nb.notifier_call = match->data;
return register_restart_handler(&at91_restart_nb);
}
static int at91_reset_platform_probe(struct platform_device *pdev)
@ -212,10 +219,11 @@ static int at91_reset_platform_probe(struct platform_device *pdev)
}
match = platform_get_device_id(pdev);
arm_pm_restart = (void (*)(enum reboot_mode, const char*))
match->driver_data;
at91_restart_nb.notifier_call =
(int (*)(struct notifier_block *,
unsigned long, void *)) match->driver_data;
return 0;
return register_restart_handler(&at91_restart_nb);
}
static int at91_reset_probe(struct platform_device *pdev)