hwmon: (aquacomputer_d5next) Add structure for fan layout

Introduce structure for per device fan sensor offsets. This allows
reading fan sensors in aqc_raw_event() from devices which use a
different sensor layout in their status HID report.  Currently only one
version is implemented as all supported devices use the same structure.

Signed-off-by: Leonard Anderweit <leonard.anderweit@gmail.com>
Link: https://lore.kernel.org/r/20221218113131.3752-4-leonard.anderweit@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/aquacomputer_d5next.c b/drivers/hwmon/aquacomputer_d5next.c
index 388bf1e33e0dacdf45335dadb1cdb31cbe7b1957..1ea866fcd3ecc70e38bdf938b7adf04e9edc9e3e 100644 (file)
--- a/drivers/hwmon/aquacomputer_d5next.c
+++ b/drivers/hwmon/aquacomputer_d5next.c
@@ -282,6 +282,21 @@ static const char *const label_highflownext_voltage[] = {
        "+5V USB voltage"
 };
 
+struct aqc_fan_structure_offsets {
+       u8 voltage;
+       u8 curr;
+       u8 power;
+       u8 speed;
+};
+
+/* Fan structure offsets for all devices except Aquaero */
+static struct aqc_fan_structure_offsets aqc_general_fan_structure = {
+       .voltage = AQC_FAN_VOLTAGE_OFFSET,
+       .curr = AQC_FAN_CURRENT_OFFSET,
+       .power = AQC_FAN_POWER_OFFSET,
+       .speed = AQC_FAN_SPEED_OFFSET
+};
+
 struct aqc_data {
        struct hid_device *hdev;
        struct device *hwmon_dev;
@@ -308,6 +323,7 @@ struct aqc_data {
        int num_flow_sensors;
        u8 flow_sensors_start_offset;
        u8 flow_pulses_ctrl_offset;
+       struct aqc_fan_structure_offsets *fan_structure;
 
        /* General info, same across all devices */
        u32 serial_number[2];
@@ -822,15 +838,17 @@ static int aqc_raw_event(struct hid_device *hdev, struct hid_report *report, u8
        /* Fan speed and related readings */
        for (i = 0; i < priv->num_fans; i++) {
                priv->speed_input[i] =
-                   get_unaligned_be16(data + priv->fan_sensor_offsets[i] + AQC_FAN_SPEED_OFFSET);
+                   get_unaligned_be16(data + priv->fan_sensor_offsets[i] +
+                                      priv->fan_structure->speed);
                priv->power_input[i] =
                    get_unaligned_be16(data + priv->fan_sensor_offsets[i] +
-                                      AQC_FAN_POWER_OFFSET) * 10000;
+                                      priv->fan_structure->power) * 10000;
                priv->voltage_input[i] =
                    get_unaligned_be16(data + priv->fan_sensor_offsets[i] +
-                                      AQC_FAN_VOLTAGE_OFFSET) * 10;
+                                      priv->fan_structure->voltage) * 10;
                priv->current_input[i] =
-                   get_unaligned_be16(data + priv->fan_sensor_offsets[i] + AQC_FAN_CURRENT_OFFSET);
+                   get_unaligned_be16(data + priv->fan_sensor_offsets[i] +
+                                      priv->fan_structure->curr);
        }
 
        /* Flow sensor readings */
@@ -1078,6 +1096,8 @@ static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
                break;
        }
 
+       priv->fan_structure = &aqc_general_fan_structure;
+
        if (priv->buffer_size != 0) {
                priv->checksum_start = 0x01;
                priv->checksum_length = priv->buffer_size - 3;