Improve temperature sensor type detection for IT8686

Introduce two new type values, 7 for 'virtual' and 8 for 'other'.
This will need to be added to the ABI once approved.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/it87.c b/it87.c
index 197c4ff5e14d4defcef3eabb3482ed8d2c440be7..50489971715ec2cfaf3f5d8296c90c5c4d6095d3 100644 (file)
--- a/it87.c
+++ b/it87.c
@@ -1308,6 +1308,15 @@ static SENSOR_DEVICE_ATTR_2(temp6_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
 static SENSOR_DEVICE_ATTR_2(temp6_offset, S_IRUGO | S_IWUSR, show_temp,
                            set_temp, 5, 3);
 
+static const u8 temp_types_8686[NUM_TEMP][9] = {
+       { 0, 8, 8, 8, 8, 8, 8, 8, 7 },
+       { 0, 6, 8, 8, 6, 0, 0, 0, 7 },
+       { 0, 6, 5, 8, 6, 0, 0, 0, 7 },
+       { 4, 8, 8, 8, 8, 8, 8, 8, 7 },
+       { 4, 6, 8, 8, 6, 0, 0, 0, 7 },
+       { 4, 6, 5, 8, 6, 0, 0, 0, 7 },
+};
+
 static int get_temp_type(struct it87_data *data, int index)
 {
        u8 reg, extra;
@@ -1318,27 +1327,11 @@ static int get_temp_type(struct it87_data *data, int index)
                u8 src1, src2;
 
                src1 = (it87_read_value(data, s1reg) >> ((index % 2) * 4)) & 0x0f;
-               src2 = it87_read_value(data, IT87_REG_TEMP_SRC2);
 
                switch (data->type) {
                case it8686:
-                       switch (src1) {
-                       case 0:
-                               if (index >= 3)
-                                       return 4;
-                               break;
-                       case 1:
-                               if (index == 1 || index == 2 ||
-                                         index == 4 || index == 5)
-                                       return 6;
-                               break;
-                       case 2:
-                               if (index == 2 || index == 6)
-                                       return 5;
-                               break;
-                       default:
-                               break;
-                       }
+                       if (src1 < 9)
+                               type = temp_types_8686[index][src1];
                        break;
                case it8625:
                        if (index < 3)
@@ -1349,6 +1342,7 @@ static int get_temp_type(struct it87_data *data, int index)
                                index = src1;
                                break;
                        }
+                       src2 = it87_read_value(data, IT87_REG_TEMP_SRC2);
                        switch(src1) {
                        case 3:
                                type = (src2 & BIT(index)) ? 6 : 5;
@@ -1367,8 +1361,8 @@ static int get_temp_type(struct it87_data *data, int index)
                        return 0;
                }
        }
-       if (index >= 3)
-               return 0;
+       if (type || index >= 3)
+               return type;
 
        reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
        extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
@@ -3857,7 +3851,7 @@ struct it87_dmi_data {
  * the second chip may have been accessed prior to loading this driver.
  *
  * The problem is also reported to affect IT8795E, which is used on X299 boards
- * and has the same chip ID as IT9792E (0x8733). It also appears to affect
+ * and has the same chip ID as IT8792E (0x8733). It also appears to affect
  * systems with IT8790E, which is used on some Z97X-Gaming boards as well as
  * Z87X-OC.
  * DMI entries for those systems will be added as they become available and