[patch] hwmon: (pmbus) Add explicit support for DPS-460, DPS-800, and SGD009

Vadim Pasternak
2016-07-25T06:11:15Z

Provide support for PSU DPS-460, DPS-800 from Delta Electronics, INC and for
SGD009 from Acbel Polytech, INC.
These devices do not support the STATUS_CML register, and reports a
communication error in response to this command.
For this reason, the status register check is disabled for these controllers.

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
---
drivers/hwmon/pmbus/pmbus.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)

diff --git a/drivers/hwmon/pmbus/pmbus.c b/drivers/hwmon/pmbus/pmbus.c
index 0a74991..f28de37 100644
--- a/drivers/hwmon/pmbus/pmbus.c
+++ b/drivers/hwmon/pmbus/pmbus.c
@@ -25,6 +25,7 @@
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/i2c.h>
+#include <linux/i2c/pmbus.h>
#include "pmbus.h"

/*
@@ -167,14 +168,27 @@ static int pmbus_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct pmbus_driver_info *info;
+ struct pmbus_platform_data *pdata = NULL;
+ struct device *dev = &client->dev;

info = devm_kzalloc(&client->dev, sizeof(struct pmbus_driver_info),
GFP_KERNEL);
if (!info)
return -ENOMEM;
+ if (!strcmp(id->name, "dps460") || !strcmp(id->name, "dps800") ||
+ !strcmp(id->name, "sgd009")) {
+ pdata = devm_kzalloc(&client->dev,
+ sizeof(struct pmbus_platform_data),
+ GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+
+ pdata->flags = PMBUS_SKIP_STATUS_CHECK;
+ }

info->pages = id->driver_data;
info->identify = pmbus_identify;
+ dev->platform_data = pdata;

return pmbus_do_probe(client, id, info);
}
@@ -186,6 +200,8 @@ static const struct i2c_device_id pmbus_id[] = {
{"adp4000", 1},
{"bmr453", 1},
{"bmr454", 1},
+ {"dps460", 1},
+ {"dps800", 1},
{"mdt040", 1},
{"ncp4200", 1},
{"ncp4208", 1},
@@ -193,6 +209,7 @@ static const struct i2c_device_id pmbus_id[] = {
{"pdt006", 1},
{"pdt012", 1},
{"pmbus", 0},
+ {"sgd009", 1},
{"tps40400", 1},
{"tps544b20", 1},
{"tps544b25", 1},
--
2.1.4