Add preliminary support for IT8792E

The chip is similar to IT8732E, but supports only three fans
instead of four (the driver currently does not support the 4th
fan on IT8732E).

Note that the chip ID is 0x8733, not 0x8792 as one would expect.

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

diff --git a/it87.c b/it87.c
index f028820d55d7482e9bacd40ad2ceac8b17bfb381..df87ffaec0baee34d70f77077cdbf1368ed8951e 100644 (file)
--- a/it87.c
+++ b/it87.c
@@ -32,6 +32,7 @@
  *            IT8783E/F Super I/O chip w/LPC interface
  *            IT8786E  Super I/O chip w/LPC interface
  *            IT8790E  Super I/O chip w/LPC interface
+ *            IT8792E  Super I/O chip w/LPC interface
  *            Sis950   A clone of the IT8705F
  *
  *  Copyright (C) 2001 Chris Gauthron
@@ -71,8 +72,8 @@
 #define DRVNAME "it87"
 
 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8732,
-            it8771, it8772, it8781, it8782, it8783, it8786, it8790, it8603,
-            it8620, it8622, it8628 };
+            it8771, it8772, it8781, it8782, it8783, it8786, it8790,
+            it8792, it8603, it8620, it8622, it8628 };
 
 static unsigned short force_id;
 module_param(force_id, ushort, 0);
@@ -153,6 +154,7 @@ static inline void superio_exit(int ioreg)
 #define IT8726F_DEVID 0x8726
 #define IT8728F_DEVID 0x8728
 #define IT8732F_DEVID 0x8732
+#define IT8792E_DEVID 0x8733
 #define IT8771E_DEVID 0x8771
 #define IT8772E_DEVID 0x8772
 #define IT8781F_DEVID 0x8781
@@ -424,6 +426,15 @@ static const struct it87_devices it87_devices[] = {
                  | FEAT_PWM_FREQ2,
                .peci_mask = 0x07,
        },
+       [it8792] = {
+               .name = "it8792",
+               .suffix = "E",
+               .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
+                 | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
+                 | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL,
+               .peci_mask = 0x07,
+               .old_peci_mask = 0x02,  /* Actually reports PCH */
+       },
        [it8603] = {
                .name = "it8603",
                .suffix = "E",
@@ -2409,6 +2420,9 @@ static int __init it87_find(int sioaddr, unsigned short *address,
        case IT8732F_DEVID:
                sio_data->type = it8732;
                break;
+       case IT8792E_DEVID:
+               sio_data->type = it8792;
+               break;
        case IT8771E_DEVID:
                sio_data->type = it8771;
                break;