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hwmon: (pmbus/mp2975) Fix PGOOD in READ_STATUS_WORD

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MP2973 & MP2971 return PGOOD instead of PB_STATUS_POWER_GOOD_N.
Fix that in the read_word_data hook.

MP2975 should not be affected, but that has not been confirmed with
hardware.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
Link: https://lore.kernel.org/r/20230731092204.2933045-1-Naresh.Solanki@9elements.com
[groeck: Rephrased description to indicate that MP2975 is likely not affected]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Patrick Rudolph 2023-07-31 11:22:04 +02:00 committed by Guenter Roeck
parent 45f154dc96
commit acda945afb
1 changed files with 5 additions and 0 deletions
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5
drivers/hwmon/pmbus/mp2975.c
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@ -380,6 +380,11 @@ static int mp2975_read_word_data(struct i2c_client *client, int page,
int ret;
switch (reg) {
case PMBUS_STATUS_WORD:
/* MP2973 & MP2971 return PGOOD instead of PB_STATUS_POWER_GOOD_N. */
ret = pmbus_read_word_data(client, page, phase, reg);
ret ^= PB_STATUS_POWER_GOOD_N;
break;
case PMBUS_OT_FAULT_LIMIT:
ret = mp2975_read_word_helper(client, page, phase, reg,
GENMASK(7, 0));