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Subject[PATCH 2/3] hwmon: (pmbus/ibm-cffps) Add the VMON property for version 2
Date
Version 2 of the PSU supports reading an auxiliary voltage. Use the
pmbus VMON property and associated virtual register to read it.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
---
drivers/hwmon/pmbus/ibm-cffps.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/pmbus/ibm-cffps.c b/drivers/hwmon/pmbus/ibm-cffps.c
index a564be9..b37faf1 100644
--- a/drivers/hwmon/pmbus/ibm-cffps.c
+++ b/drivers/hwmon/pmbus/ibm-cffps.c
@@ -28,6 +28,7 @@
#define CFFPS1_FW_NUM_BYTES 4
#define CFFPS2_FW_NUM_WORDS 3
#define CFFPS_SYS_CONFIG_CMD 0xDA
+#define CFFPS_12VCS_VOUT_CMD 0xDE

#define CFFPS_INPUT_HISTORY_CMD 0xD6
#define CFFPS_INPUT_HISTORY_SIZE 100
@@ -350,6 +351,9 @@ static int ibm_cffps_read_word_data(struct i2c_client *client, int page,
if (mfr & CFFPS_MFR_PS_KILL)
rc |= PB_STATUS_OFF;
break;
+ case PMBUS_VIRT_READ_VMON:
+ rc = pmbus_read_word_data(client, page, CFFPS_12VCS_VOUT_CMD);
+ break;
default:
rc = -ENODATA;
break;
@@ -453,7 +457,7 @@ static void ibm_cffps_create_led_class(struct ibm_cffps *psu)
PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3 |
PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT |
PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP |
- PMBUS_HAVE_STATUS_FAN12,
+ PMBUS_HAVE_STATUS_FAN12 | PMBUS_HAVE_VMON,
.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT |
PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3 |
PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT,
--
1.8.3.1
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