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regulator: fan53555: support reboot

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Signed-off-by: shengfei Xu <xsf@rock-chips.com>
Change-Id: I216f931fd6a3bc0ccfbad876239d2b0eb25420ea
This commit is contained in:
shengfei Xu 2021-01-11 10:10:08 +00:00 committed by Tao Huang
parent 60b3c1ee24
commit 14c585cae3
1 changed files with 40 additions and 1 deletions
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41
drivers/regulator/fan53555.c
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@ -39,6 +39,7 @@
#define TCS452X_VSEL1 0x10
#define TCS452X_TIME 0x13
#define TCS452X_COMMAND 0x14
#define TCS452X_LIMCONF 0x16
/* Control register */
#define FAN53555_CONTROL 0x02
@ -726,8 +727,45 @@ static int fan53555_regulator_probe(struct i2c_client *client,
ret = fan53555_regulator_register(di, &config);
if (ret < 0)
dev_err(&client->dev, "Failed to register regulator!\n");
return ret;
return ret;
}
static void fan53555_regulator_shutdown(struct i2c_client *client)
{
struct fan53555_device_info *di;
int ret;
di = i2c_get_clientdata(client);
dev_info(di->dev, "fan53555..... reset\n");
switch (di->vendor) {
case FAN53555_VENDOR_FAIRCHILD:
case FAN53555_VENDOR_RK:
case FAN53555_VENDOR_SILERGY:
ret = regmap_update_bits(di->regmap, di->slew_reg,
CTL_RESET, CTL_RESET);
break;
case FAN53555_VENDOR_TCS:
ret = regmap_update_bits(di->regmap, TCS452X_LIMCONF,
CTL_RESET, CTL_RESET);
/*
* the device can't return 'ack' during the reset,
* it will return -ENXIO, ignore this error.
*/
if (ret == -ENXIO)
ret = 0;
break;
default:
ret = -EINVAL;
break;
}
if (ret < 0)
dev_err(di->dev, "reset: force fan53555_reset error! ret=%d\n", ret);
else
dev_info(di->dev, "reset: force fan53555_reset ok!\n");
}
static const struct i2c_device_id fan53555_id[] = {
@ -760,6 +798,7 @@ static struct i2c_driver fan53555_regulator_driver = {
.of_match_table = of_match_ptr(fan53555_dt_ids),
},
.probe = fan53555_regulator_probe,
.shutdown = fan53555_regulator_shutdown,
.id_table = fan53555_id,
};