Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-27 13:22:23 +00:00
Code Issues Packages Projects Releases Wiki Activity

hwmon: (pmbus/lm25066) Add regulator support

Browse Source 
While these chips aren't strictly advertised as voltage regulators per
se, they (aside from the lm25056) support the PMBus OPERATION command
to enable and disable their outputs and have status bits for reporting
various warnings and faults, and can hence usefully support all the
pmbus_regulator_ops operations.

Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Link: https://lore.kernel.org/r/20220219000742.20126-1-zev@bewilderbeest.net
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Zev Weiss 2022-02-18 16:07:42 -08:00 committed by Guenter Roeck
parent e0f0307ac1
commit da78ad2b6b
2 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/hwmon/pmbus/Kconfig
View File

@ -174,6 +174,13 @@ config SENSORS_LM25066
This driver can also be built as a module. If so, the module will
be called lm25066.
config SENSORS_LM25066_REGULATOR
bool "Regulator support for LM25066 and compatibles"
depends on SENSORS_LM25066 && REGULATOR
help
If you say yes here you get regulator support for National
Semiconductor LM25066, LM5064, and LM5066.
config SENSORS_LTC2978
tristate "Linear Technologies LTC2978 and compatibles"
help

14
drivers/hwmon/pmbus/lm25066.c
View File

@ -435,6 +435,12 @@ static int lm25066_write_word_data(struct i2c_client *client, int page, int reg,
return ret;
}
#if IS_ENABLED(CONFIG_SENSORS_LM25066_REGULATOR)
static const struct regulator_desc lm25066_reg_desc[] = {
PMBUS_REGULATOR("vout", 0),
};
#endif
static const struct i2c_device_id lm25066_id[] = {
{"lm25056", lm25056},
{"lm25066", lm25066},
@ -545,6 +551,14 @@ static int lm25066_probe(struct i2c_client *client)
info->m[PSC_CURRENT_IN] = info->m[PSC_CURRENT_IN] * shunt / 1000;
info->m[PSC_POWER] = info->m[PSC_POWER] * shunt / 1000;
#if IS_ENABLED(CONFIG_SENSORS_LM25066_REGULATOR)
/* LM25056 doesn't support OPERATION */
if (data->id != lm25056) {
info->num_regulators = ARRAY_SIZE(lm25066_reg_desc);
info->reg_desc = lm25066_reg_desc;
}
#endif
return pmbus_do_probe(client, info);
}