Commit da78ad2b authored by Zev Weiss's avatar Zev Weiss Committed by Guenter Roeck
Browse files

hwmon: (pmbus/lm25066) Add regulator support 



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: default avatarZev Weiss <zev@bewilderbeest.net>
Link: https://lore.kernel.org/r/20220219000742.20126-1-zev@bewilderbeest.net


Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent e0f0307a

drivers/hwmon/pmbus/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -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

drivers/hwmon/pmbus/lm25066.c

+14 −0
Original line number Diff line number Diff line
@@ -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);

}