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mfd: stpmic1: Add PMIC poweroff via sys-off handler

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Use devm_register_sys_off_handler() that allows to register multiple
power-off handlers.
This will allow boards using the stpmic1 to power-off.

Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230602062426.3947116-2-sean@geanix.com
This commit is contained in:
Sean Nyekjaer 2023-06-02 08:24:26 +02:00 committed by Lee Jones
parent 48b4371b98
commit 6e9df38f35
1 changed files with 21 additions and 0 deletions
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21
drivers/mfd/stpmic1.c
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@ -7,6 +7,7 @@
#include <linux/mfd/core.h>
#include <linux/mfd/stpmic1.h>
#include <linux/module.h>
#include <linux/reboot.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
@ -117,6 +118,16 @@ static const struct regmap_irq_chip stpmic1_regmap_irq_chip = {
.num_irqs = ARRAY_SIZE(stpmic1_irqs),
};
static int stpmic1_power_off(struct sys_off_data *data)
{
struct stpmic1 *ddata = data->cb_data;
regmap_update_bits(ddata->regmap, MAIN_CR,
SOFTWARE_SWITCH_OFF, SOFTWARE_SWITCH_OFF);
return NOTIFY_DONE;
}
static int stpmic1_probe(struct i2c_client *i2c)
{
struct stpmic1 *ddata;
@ -159,6 +170,16 @@ static int stpmic1_probe(struct i2c_client *i2c)
return ret;
}
ret = devm_register_sys_off_handler(ddata->dev,
SYS_OFF_MODE_POWER_OFF,
SYS_OFF_PRIO_DEFAULT,
stpmic1_power_off,
ddata);
if (ret) {
dev_err(ddata->dev, "failed to register sys-off handler: %d\n", ret);
return ret;
}
return devm_of_platform_populate(dev);
}