From 2b52278150c49559a472f2d6dd66f6f3b405378e Mon Sep 17 00:00:00 2001 From: Steve Foreman Date: Fri, 2 Oct 2020 16:35:38 +0000 Subject: hwmon: (pmbus/max34440) Fix OC fault limits The max34* family have the IOUT_OC_WARN_LIMIT and IOUT_OC_CRIT_LIMIT registers swapped. Cc: stable@vger.kernel.org Signed-off-by: Steve Foreman [groeck: Updated subject, use C comment style, tab after defines] [groeck: Added missing break; statements (by alexandru.ardelean@analog.com)] Signed-off-by: Guenter Roeck --- drivers/hwmon/pmbus/max34440.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/hwmon/pmbus/max34440.c b/drivers/hwmon/pmbus/max34440.c index 8ea31b59f8e8..f4cb196aaaf3 100644 --- a/drivers/hwmon/pmbus/max34440.c +++ b/drivers/hwmon/pmbus/max34440.c @@ -31,6 +31,13 @@ enum chips { max34440, max34441, max34446, max34451, max34460, max34461 }; #define MAX34440_STATUS_OT_FAULT BIT(5) #define MAX34440_STATUS_OT_WARN BIT(6) +/* + * The whole max344* family have IOUT_OC_WARN_LIMIT and IOUT_OC_FAULT_LIMIT + * swapped from the standard pmbus spec addresses. + */ +#define MAX34440_IOUT_OC_WARN_LIMIT 0x46 +#define MAX34440_IOUT_OC_FAULT_LIMIT 0x4A + #define MAX34451_MFR_CHANNEL_CONFIG 0xe4 #define MAX34451_MFR_CHANNEL_CONFIG_SEL_MASK 0x3f @@ -51,6 +58,14 @@ static int max34440_read_word_data(struct i2c_client *client, int page, const struct max34440_data *data = to_max34440_data(info); switch (reg) { + case PMBUS_IOUT_OC_FAULT_LIMIT: + ret = pmbus_read_word_data(client, page, phase, + MAX34440_IOUT_OC_FAULT_LIMIT); + break; + case PMBUS_IOUT_OC_WARN_LIMIT: + ret = pmbus_read_word_data(client, page, phase, + MAX34440_IOUT_OC_WARN_LIMIT); + break; case PMBUS_VIRT_READ_VOUT_MIN: ret = pmbus_read_word_data(client, page, phase, MAX34440_MFR_VOUT_MIN); @@ -117,6 +132,14 @@ static int max34440_write_word_data(struct i2c_client *client, int page, int ret; switch (reg) { + case PMBUS_IOUT_OC_FAULT_LIMIT: + ret = pmbus_write_word_data(client, page, MAX34440_IOUT_OC_FAULT_LIMIT, + word); + break; + case PMBUS_IOUT_OC_WARN_LIMIT: + ret = pmbus_write_word_data(client, page, MAX34440_IOUT_OC_WARN_LIMIT, + word); + break; case PMBUS_VIRT_RESET_POUT_HISTORY: ret = pmbus_write_word_data(client, page, MAX34446_MFR_POUT_PEAK, 0); -- cgit v1.2.1