Add support for IT8781F

IT8781F is mostly compatible to IT8782F. Major difference is that it only
supports four instead of six UART channels, and therefore does not share
the uart6 pins.

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

diff --git a/README b/README
index 62110550dd66b6e44cbcd1a1d897535cf4e24cf9..598fd0b8fdb94121bc2cbda7677d12996e2ed6b4 100644 (file)
--- a/README
+++ b/README
@@ -30,6 +30,10 @@ Supported chips:
     Prefix: 'it8728'
     Addresses scanned: from Super I/O config space (8 I/O ports)
     Datasheet: Not publicly available
+  * IT8781F
+    Prefix: 'it8781'
+    Addresses scanned: from Super I/O config space (8 I/O ports)
+    Datasheet: Not publicly available
   * IT8782F
     Prefix: 'it8782'
     Addresses scanned: from Super I/O config space (8 I/O ports)

diff --git a/it87.c b/it87.c
index 125d15889d5169d66560c93ff9fae9487d04d933..a90628a4be9e96d50bb6ea73a2cf5f73bf562507 100644 (file)
--- a/it87.c
+++ b/it87.c
@@ -23,6 +23,7 @@
  *            IT8758E  Super I/O chip w/LPC interface
  *            IT8771E  Super I/O chip w/LPC interface
  *            IT8772E  Super I/O chip w/LPC interface
+ *            IT8781F  Super I/O chip w/LPC interface
  *            IT8782F  Super I/O chip w/LPC interface
  *            IT8783E/F Super I/O chip w/LPC interface
  *            Sis950   A clone of the IT8705F
@@ -67,7 +68,7 @@
 #define DRVNAME "it87"
 
 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8771,
-            it8772, it8782, it8783, it8603 };
+            it8772, it8781, it8782, it8783, it8603 };
 
 static unsigned short force_id;
 module_param(force_id, ushort, 0);
@@ -147,6 +148,7 @@ static inline void superio_exit(void)
 #define IT8728F_DEVID 0x8728
 #define IT8771E_DEVID 0x8771
 #define IT8772E_DEVID 0x8772
+#define IT8781F_DEVID 0x8781
 #define IT8782F_DEVID 0x8782
 #define IT8783E_DEVID 0x8783
 #define IT8603E_DEVID 0x8603
@@ -308,6 +310,12 @@ static const struct it87_devices it87_devices[] = {
                                        /* 16 bit fans (HWSensors4, OHM) */
                .peci_mask = 0x07,
        },
+       [it8781] = {
+               .name = "it8781",
+               .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
+                 | FEAT_TEMP_OLD_PECI,
+               .old_peci_mask = 0x4,
+       },
        [it8782] = {
                .name = "it8782",
                .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
@@ -1762,6 +1770,9 @@ static int __init it87_find(unsigned short *address,
        case IT8772E_DEVID:
                sio_data->type = it8772;
                break;
+       case IT8781F_DEVID:
+               sio_data->type = it8781;
+               break;
        case IT8782F_DEVID:
                sio_data->type = it8782;
                break;
@@ -1920,10 +1931,11 @@ static int __init it87_find(unsigned short *address,
                reg = superio_inb(IT87_SIO_GPIO3_REG);
                if (sio_data->type == it8721 || sio_data->type == it8728 ||
                    sio_data->type == it8771 || sio_data->type == it8772 ||
-                   sio_data->type == it8782) {
+                   sio_data->type == it8781 || sio_data->type == it8782) {
                        /*
-                        * IT8721F/IT8758E, and IT8782F don't have VID pins
-                        * at all, not sure about the IT8728F and compatibles.
+                        * IT8721F/IT8758E, IT8728F, IT8772F, IT8781F, and
+                        * IT8782F don't have VID pins at all, not sure about
+                        * the IT8771F.
                         */
                        sio_data->skip_vid = 1;
                } else {
@@ -2148,7 +2160,8 @@ static int it87_probe(struct platform_device *pdev)
                        data->in_scaled |= (1 << 8);    /* in8 is Vbat */
                if (sio_data->internal & (1 << 3))
                        data->in_scaled |= (1 << 9);    /* in9 is AVCC */
-       } else if (sio_data->type == it8782 || sio_data->type == it8783) {
+       } else if (sio_data->type == it8781 || sio_data->type == it8782 ||
+                  sio_data->type == it8783) {
                if (sio_data->internal & (1 << 0))
                        data->in_scaled |= (1 << 3);    /* in3 is VCC5V */
                if (sio_data->internal & (1 << 1))
@@ -2461,9 +2474,12 @@ static void it87_init_device(struct platform_device *pdev)
                        it87_write_value(data, IT87_REG_FAN_16BIT,
                                         tmp | 0x07);
                }
-               /* IT8705F, IT8782F, and IT8783E/F only support three fans. */
-               if (data->type != it87 && data->type != it8782 &&
-                   data->type != it8783) {
+               /*
+                * IT8705F, IT8781F, IT8782F, and IT8783E/F only support
+                * three fans.
+                */
+               if (data->type != it87 && data->type != it8781 &&
+                   data->type != it8782 && data->type != it8783) {
                        if (tmp & (1 << 4))
                                data->has_fan |= (1 << 3); /* fan4 enabled */
                        if (tmp & (1 << 5))