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power/reset: at91-poweroff: allow compiling as a module

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It was not possible to compile at91-poweroff as a module. Implement
.remove() to allow it. Also switch to module_platform_driver_probe() as it
is not hotpluggable.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Alexandre Belloni 2015-08-11 11:12:49 +02:00 committed by Sebastian Reichel
parent 2b2c6148fe
commit 6dd1ad1f23
2 changed files with 16 additions and 4 deletions
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2
drivers/power/reset/Kconfig
View file

@ -15,7 +15,7 @@ config POWER_RESET_AS3722
This driver supports turning off board via a ams AS3722 power-off.
config POWER_RESET_AT91_POWEROFF
bool "Atmel AT91 poweroff driver"
tristate "Atmel AT91 poweroff driver"
depends on ARCH_AT91
default SOC_AT91SAM9 || SOC_SAMA5
help

18
drivers/power/reset/at91-poweroff.c
View file

@ -119,7 +119,7 @@ static void at91_poweroff_dt_set_wakeup_mode(struct platform_device *pdev)
writel(wakeup_mode | mode, at91_shdwc_base + AT91_SHDW_MR);
}
static int at91_poweroff_probe(struct platform_device *pdev)
static int __init at91_poweroff_probe(struct platform_device *pdev)
{
struct resource *res;
@ -140,6 +140,14 @@ static int at91_poweroff_probe(struct platform_device *pdev)
return 0;
}
static int __exit at91_poweroff_remove(struct platform_device *pdev)
{
if (pm_power_off == at91_poweroff)
pm_power_off = NULL;
return 0;
}
static const struct of_device_id at91_poweroff_of_match[] = {
{ .compatible = "atmel,at91sam9260-shdwc", },
{ .compatible = "atmel,at91sam9rl-shdwc", },
@ -148,10 +156,14 @@ static const struct of_device_id at91_poweroff_of_match[] = {
};
static struct platform_driver at91_poweroff_driver = {
.probe = at91_poweroff_probe,
.remove = __exit_p(at91_poweroff_remove),
.driver = {
.name = "at91-poweroff",
.of_match_table = at91_poweroff_of_match,
},
};
module_platform_driver(at91_poweroff_driver);
module_platform_driver_probe(at91_poweroff_driver, at91_poweroff_probe);
MODULE_AUTHOR("Atmel Corporation");
MODULE_DESCRIPTION("Shutdown driver for Atmel SoCs");
MODULE_LICENSE("GPL v2");