hwmon: (pmbus) Expand scope of device specific get_status function

Some devices use non-standard registers to access various functionality.
This does not only affect status registers, but other registers as well.
Rename local get_status function to get_byte_data to reflect this requirement.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: Tom Grennan <tom.grennan@ericsson.com>

4 files changed, 27 insertions, 22 deletions

diff --git a/drivers/hwmon/max34440.c b/drivers/hwmon/max34440.c
index 992b701b4c5..db11e1a175b 100644
--- a/drivers/hwmon/max34440.c
+++ b/drivers/hwmon/max34440.c
@@ -32,7 +32,7 @@ enum chips { max34440, max34441 };
 #define MAX34440_STATUS_OT_FAULT        (1 << 5)
 #define MAX34440_STATUS_OT_WARN         (1 << 6)
 
-static int max34440_get_status(struct i2c_client *client, int page, int reg)
+static int max34440_read_byte_data(struct i2c_client *client, int page, int reg)
 {
         int ret;
         int mfg_status;
@@ -108,7 +108,7 @@ static struct pmbus_driver_info max34440_info[] = {
                 .func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
                 .func[12] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
                 .func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
-                .get_status = max34440_get_status,
+                .read_byte_data = max34440_read_byte_data,
         },
         [max34441] = {
                 .pages = 12,
@@ -149,7 +149,7 @@ static struct pmbus_driver_info max34440_info[] = {
                 .func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
                 .func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
                 .func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
-                .get_status = max34440_get_status,
+                .read_byte_data = max34440_read_byte_data,
         },
 };
 
diff --git a/drivers/hwmon/max8688.c b/drivers/hwmon/max8688.c
index 8ebfef2ecf2..7fb93f4e9f2 100644
--- a/drivers/hwmon/max8688.c
+++ b/drivers/hwmon/max8688.c
@@ -37,7 +37,7 @@
 #define MAX8688_STATUS_OT_FAULT         (1 << 13)
 #define MAX8688_STATUS_OT_WARNING       (1 << 14)
 
-static int max8688_get_status(struct i2c_client *client, int page, int reg)
+static int max8688_read_byte_data(struct i2c_client *client, int page, int reg)
 {
         int ret = 0;
         int mfg_status;
@@ -110,7 +110,7 @@ static struct pmbus_driver_info max8688_info = {
         .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT | PMBUS_HAVE_TEMP
                 | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT
                 | PMBUS_HAVE_STATUS_TEMP,
-        .get_status = max8688_get_status,
+        .read_byte_data = max8688_read_byte_data,
 };
 
 static int max8688_probe(struct i2c_client *client,
diff --git a/drivers/hwmon/pmbus.h b/drivers/hwmon/pmbus.h
index a81f7f22876..50647ab7235 100644
--- a/drivers/hwmon/pmbus.h
+++ b/drivers/hwmon/pmbus.h
@@ -281,13 +281,11 @@ struct pmbus_driver_info {
 
         u32 func[PMBUS_PAGES];  /* Functionality, per page */
         /*
-         * The get_status function maps manufacturing specific status values
-         * into PMBus standard status values.
-         * This function is optional and only necessary if chip specific status
-         * register values have to be mapped into standard PMBus status register
-         * values.
+         * The following functions map manufacturing specific register values
+         * to PMBus standard register values. Specify only if mapping is
+         * necessary.
          */
-        int (*get_status)(struct i2c_client *client, int page, int reg);
+        int (*read_byte_data)(struct i2c_client *client, int page, int reg);
         /*
          * The identify function determines supported PMBus functionality.
          * This function is only necessary if a chip driver supports multiple
diff --git a/drivers/hwmon/pmbus_core.c b/drivers/hwmon/pmbus_core.c
index 4e42a299464..43ec1057c1f 100644
--- a/drivers/hwmon/pmbus_core.c
+++ b/drivers/hwmon/pmbus_core.c
@@ -270,18 +270,22 @@ const struct pmbus_driver_info *pmbus_get_driver_info(struct i2c_client *client)
 }
 EXPORT_SYMBOL_GPL(pmbus_get_driver_info);
 
-static int pmbus_get_status(struct i2c_client *client, int page, int reg)
+/*
+ * _pmbus_read_byte_data() is similar to pmbus_read_byte_data(), but checks if
+ * a device specific mapping funcion exists and calls it if necessary.
+ */
+static int _pmbus_read_byte_data(struct i2c_client *client, int page, int reg)
 {
         struct pmbus_data *data = i2c_get_clientdata(client);
         const struct pmbus_driver_info *info = data->info;
         int status;
 
-        if (info->get_status) {
-                status = info->get_status(client, page, reg);
+        if (info->read_byte_data) {
+                status = info->read_byte_data(client, page, reg);
                 if (status != -ENODATA)
                         return status;
         }
-        return  pmbus_read_byte_data(client, page, reg);
+        return pmbus_read_byte_data(client, page, reg);
 }
 
 static struct pmbus_data *pmbus_update_device(struct device *dev)
@@ -302,38 +306,41 @@ static struct pmbus_data *pmbus_update_device(struct device *dev)
                         if (!(info->func[i] & PMBUS_HAVE_STATUS_VOUT))
                                 continue;
                         data->status[PB_STATUS_VOUT_BASE + i]
-                          = pmbus_get_status(client, i, PMBUS_STATUS_VOUT);
+                          = _pmbus_read_byte_data(client, i, PMBUS_STATUS_VOUT);
                 }
                 for (i = 0; i < info->pages; i++) {
                         if (!(info->func[i] & PMBUS_HAVE_STATUS_IOUT))
                                 continue;
                         data->status[PB_STATUS_IOUT_BASE + i]
-                          = pmbus_get_status(client, i, PMBUS_STATUS_IOUT);
+                          = _pmbus_read_byte_data(client, i, PMBUS_STATUS_IOUT);
                 }
                 for (i = 0; i < info->pages; i++) {
                         if (!(info->func[i] & PMBUS_HAVE_STATUS_TEMP))
                                 continue;
                         data->status[PB_STATUS_TEMP_BASE + i]
-                          = pmbus_get_status(client, i,
-                                             PMBUS_STATUS_TEMPERATURE);
+                          = _pmbus_read_byte_data(client, i,
+                                                  PMBUS_STATUS_TEMPERATURE);
                 }
                 for (i = 0; i < info->pages; i++) {
                         if (!(info->func[i] & PMBUS_HAVE_STATUS_FAN12))
                                 continue;
                         data->status[PB_STATUS_FAN_BASE + i]
-                          = pmbus_get_status(client, i, PMBUS_STATUS_FAN_12);
+                          = _pmbus_read_byte_data(client, i,
+                                                  PMBUS_STATUS_FAN_12);
                 }
 
                 for (i = 0; i < info->pages; i++) {
                         if (!(info->func[i] & PMBUS_HAVE_STATUS_FAN34))
                                 continue;
                         data->status[PB_STATUS_FAN34_BASE + i]
-                          = pmbus_get_status(client, i, PMBUS_STATUS_FAN_34);
+                          = _pmbus_read_byte_data(client, i,
+                                                  PMBUS_STATUS_FAN_34);
                 }
 
                 if (info->func[0] & PMBUS_HAVE_STATUS_INPUT)
                         data->status[PB_STATUS_INPUT_BASE]
-                          = pmbus_get_status(client, 0, PMBUS_STATUS_INPUT);
+                          = _pmbus_read_byte_data(client, 0,
+                                                  PMBUS_STATUS_INPUT);
 
                 for (i = 0; i < data->num_sensors; i++) {
                         struct pmbus_sensor *sensor = &data->sensors[i];