hwmon: (it87) Add new chipset IT87952E

Add IT87952E, a new chip ID (DEV ID 0x8695), which appears to be an
updated version of the IT8792E and takes the same configuration.

The model name comes from the model name printed on the chip.

There is no datasheet publicly available.

Signed-off-by: Frank Crawford <frank@crawford.emu.id.au>
Link: https://lore.kernel.org/r/20230128060308.1549707-7-frank@crawford.emu.id.au
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 5a1d11a..66f7cea 100644 (file)
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -34,6 +34,7 @@
  *            IT8786E  Super I/O chip w/LPC interface
  *            IT8790E  Super I/O chip w/LPC interface
  *            IT8792E  Super I/O chip w/LPC interface
+ *            IT87952E  Super I/O chip w/LPC interface
  *            Sis950   A clone of the IT8705F
  *
  *  Copyright (C) 2001 Chris Gauthron
@@ -63,7 +64,7 @@
 
 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8732,
             it8771, it8772, it8781, it8782, it8783, it8786, it8790,
-            it8792, it8603, it8620, it8622, it8628 };
+            it8792, it8603, it8620, it8622, it8628, it87952 };
 
 static struct platform_device *it87_pdev[2];
 
@@ -160,6 +161,7 @@ static inline void superio_exit(int ioreg, bool noexit)
 #define IT8622E_DEVID 0x8622
 #define IT8623E_DEVID 0x8623
 #define IT8628E_DEVID 0x8628
+#define IT87952E_DEVID 0x8695
 #define IT87_ACT_REG  0x30
 #define IT87_BASE_REG 0x60
 
@@ -477,6 +479,15 @@ static const struct it87_devices it87_devices[] = {
                  | FEAT_SIX_TEMP | FEAT_VIN3_5V,
                .peci_mask = 0x07,
        },
+       [it87952] = {
+               .name = "it87952",
+               .model = "IT87952E",
+               .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
+                 | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
+                 | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL | FEAT_CONF_NOEXIT,
+               .peci_mask = 0x07,
+               .old_peci_mask = 0x02,  /* Actually reports PCH */
+       },
 };
 
 #define has_16bit_fans(data)   ((data)->features & FEAT_16BIT_FANS)
@@ -2497,6 +2508,9 @@ static int __init it87_find(int sioaddr, unsigned short *address,
        case IT8628E_DEVID:
                sio_data->type = it8628;
                break;
+       case IT87952E_DEVID:
+               sio_data->type = it87952;
+               break;
        case 0xffff:    /* No device at all */
                goto exit;
        default: