hwmon/it87: Add IT8726F support

Add support for IT8726F chip driver, which is just same as
IT8716F with additional glue logic for AMD power sequencing.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

3 files changed, 14 insertions, 4 deletions

diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87
index c0528d6f9ace..81ecc7e41c50 100644
--- a/Documentation/hwmon/it87
+++ b/Documentation/hwmon/it87
@@ -12,11 +12,12 @@ Supported chips:
     Addresses scanned: from Super I/O config space (8 I/O ports)
     Datasheet: Publicly available at the ITE website
                http://www.ite.com.tw/
-  * IT8716F
+  * IT8716F/IT8726F
     Prefix: 'it8716'
     Addresses scanned: from Super I/O config space (8 I/O ports)
     Datasheet: Publicly available at the ITE website
                http://www.ite.com.tw/product_info/file/pc/IT8716F_V0.3.ZIP
+               http://www.ite.com.tw/product_info/file/pc/IT8726F_V0.3.pdf
   * IT8718F
     Prefix: 'it8718'
     Addresses scanned: from Super I/O config space (8 I/O ports)
@@ -68,7 +69,7 @@ Description
 -----------
 
 This driver implements support for the IT8705F, IT8712F, IT8716F,
-IT8718F and SiS950 chips.
+IT8718F, IT8726F and SiS950 chips.
 
 These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
 joysticks and other miscellaneous stuff. For hardware monitoring, they
@@ -97,6 +98,10 @@ clock divider mess) but not compatible with the older chips and
 revisions. For now, the driver only uses the 16-bit mode on the
 IT8716F and IT8718F.
 
+The IT8726F is just bit enhanced IT8716F with additional hardware
+for AMD power sequencing. Therefore the chip will appear as IT8716F
+to userspace applications.
+
 Temperatures are measured in degrees Celsius. An alarm is triggered once
 when the Overtemperature Shutdown limit is crossed.
 
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index d1c6be9e2bad..5868e1a1917a 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -255,7 +255,7 @@ config SENSORS_IT87
         select HWMON_VID
         help
           If you say yes here you get support for ITE IT8705F, IT8712F,
-          IT8716F and IT8718F sensor chips, and the SiS960 clone.
+          IT8716F, IT8718F and IT8726F sensor chips, and the SiS960 clone.
 
           This driver can also be built as a module.  If so, the module
           will be called it87.
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 62afc63708a5..1dd7654cf00b 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -6,6 +6,7 @@
               IT8712F  Super I/O chip w/LPC interface
               IT8716F  Super I/O chip w/LPC interface
               IT8718F  Super I/O chip w/LPC interface
+              IT8726F  Super I/O chip w/LPC interface
               Sis950   A clone of the IT8705F
 
     Copyright (C) 2001 Chris Gauthron <chrisg@0-in.com> 
@@ -97,6 +98,7 @@ superio_exit(void)
 #define IT8705F_DEVID 0x8705
 #define IT8716F_DEVID 0x8716
 #define IT8718F_DEVID 0x8718
+#define IT8726F_DEVID 0x8726
 #define IT87_ACT_REG  0x30
 #define IT87_BASE_REG 0x60
 
@@ -885,6 +887,7 @@ static int __init it87_find(unsigned short *address)
         chip_type = superio_inw(DEVID);
         if (chip_type != IT8712F_DEVID
          && chip_type != IT8716F_DEVID
+         && chip_type != IT8726F_DEVID
          && chip_type != IT8718F_DEVID
          && chip_type != IT8705F_DEVID)
                 goto exit;
@@ -965,6 +968,8 @@ static int it87_detect(struct i2c_adapter *adapter)
                 data->type = it8712;
                 name = "it8712";
                 break;
+        case IT8726F_DEVID:
+        /* fall through */
         case IT8716F_DEVID:
                 data->type = it8716;
                 name = "it8716";
@@ -1389,7 +1394,7 @@ static void __exit sm_it87_exit(void)
 
 MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>, "
               "Jean Delvare <khali@linux-fr.org>");
-MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F, SiS950 driver");
+MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8726F, SiS950 driver");
 module_param(update_vbat, bool, 0);
 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
 module_param(fix_pwm_polarity, bool, 0);