diff options
| author | Stefan Agner <stefan.agner@toradex.com> | 2016-03-18 19:24:48 -0700 |
|---|---|---|
| committer | Stefan Agner <stefan.agner@toradex.com> | 2016-03-18 19:59:09 -0700 |
| commit | e1121f9a970a2d0e770532a5849eb749d8bbe8a3 (patch) | |
| tree | e7dc99068507a6f80aa78dff2d40da613548135b | |
| parent | b5e0328c10eafd9c74ddc7b73fbebf13a6405b34 (diff) | |
rn5t567: register ARM reset callback
Use the PMIC repower capabilities to reboot the module. Register
arm_pm_restart to trigger a cold reboot using the PMIC.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
| -rw-r--r-- | drivers/mfd/rn5t567.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/mfd/rn5t567.c b/drivers/mfd/rn5t567.c index f0a47ab52239..4209f1a51545 100644 --- a/drivers/mfd/rn5t567.c +++ b/drivers/mfd/rn5t567.c @@ -19,6 +19,8 @@ #include <linux/module.h> #include <linux/regmap.h> +#include <asm/system_misc.h> + static const struct mfd_cell rn5t618_cells[] = { { .name = "rn5t618-regulator" }, { .name = "rn5t618-wdt" }, @@ -53,16 +55,28 @@ static const struct regmap_config rn5t618_regmap_config = { static struct rn5t618 *rn5t618_pm_power_off; -static void rn5t618_power_off(void) +static void rn5t618_trigger_poweroff_sequence(bool repower) { /* disable automatic repower-on */ regmap_update_bits(rn5t618_pm_power_off->regmap, RN5T618_REPCNT, - RN5T618_REPCNT_REPWRON, 0); + RN5T618_REPCNT_REPWRON, repower); /* start power-off sequence */ regmap_update_bits(rn5t618_pm_power_off->regmap, RN5T618_SLPCNT, RN5T618_SLPCNT_SWPWROFF, RN5T618_SLPCNT_SWPWROFF); } +static void rn5t618_power_off(void) +{ + rn5t618_trigger_poweroff_sequence(false); +} + +static void rn5t618_restart(enum reboot_mode reboot_mode, const char *cmd) +{ + rn5t618_trigger_poweroff_sequence(true); + + pr_info("Unable to restart system\n"); +} + static int rn5t618_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { @@ -90,10 +104,12 @@ static int rn5t618_i2c_probe(struct i2c_client *i2c, return ret; } - if (!pm_power_off && of_device_is_compatible(np, "ricoh,rn5t618")) { - rn5t618_pm_power_off = priv; + rn5t618_pm_power_off = priv; + if (!pm_power_off && of_device_is_compatible(np, "ricoh,rn5t618")) pm_power_off = rn5t618_power_off; - } + + if (of_device_is_compatible(np, "ricoh,rn5t567")) + arm_pm_restart = rn5t618_restart; dev_err(&i2c->dev, "probe finished ok: %d\n", ret); |