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

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>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/pmbus/pmbus.c b/drivers/hwmon/pmbus/pmbus.c
index 0a74991..44ca8a9 100644 (file)
--- 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 +168,26 @@ 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);
+       info = devm_kzalloc(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(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 +199,8 @@ 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 +208,7 @@ static const struct i2c_device_id pmbus_id[] = {
        {"pdt006", 1},
        {"pdt012", 1},
        {"pmbus", 0},
+       {"sgd009", 1},
        {"tps40400", 1},
        {"tps544b20", 1},
        {"tps544b25", 1},