pnp: Add some default functions to enter/exit config state

Implement some common default functions to enter and exit the
configuration state. Also provide default pnp_mode_ops for common
enter()/exit() function pairs.

The following cocci ensures their use:
    @ mode_match @
    identifier enter, exit, ops;
    @@
     struct pnp_mode_ops ops = {
             .enter_conf_mode  = enter,
             .exit_conf_mode   = exit,
     };

    @ enter_match_8787 @
    identifier mode_match.enter, dev;
    @@
     enter(...)
     {
             outb(0x87, dev->path.pnp.port);
             outb(0x87, dev->path.pnp.port);
     }

    @ depends on enter_match_8787 @
    identifier mode_match.enter, mode_match.ops;
    @@
     struct pnp_mode_ops ops = {
    -        .enter_conf_mode  = enter,
    +        .enter_conf_mode  = pnp_enter_conf_mode_8787,
     };

    @ enter_match_55 @
    identifier mode_match.enter, dev;
    @@
     enter(...)
     {
             outb(0x55, dev->path.pnp.port);
     }

    @ depends on enter_match_55 @
    identifier mode_match.enter, mode_match.ops;
    @@
     struct pnp_mode_ops ops = {
    -        .enter_conf_mode  = enter,
    +        .enter_conf_mode  = pnp_enter_conf_mode_55,
     };

    @ depends on enter_match_8787 || enter_match_55 @
    identifier mode_match.enter;
    @@
    -enter(...) {...}

    @ exit_match_aa @
    identifier mode_match.exit, dev;
    @@
     exit(...)
     {
             outb(0xaa, dev->path.pnp.port);
     }

    @ depends on exit_match_aa @
    identifier mode_match.exit, mode_match.ops;
    @@
     struct pnp_mode_ops ops = {
    -        .exit_conf_mode   = exit,
    +        .exit_conf_mode   = pnp_exit_conf_mode_aa,
     };

    @ depends on exit_match_aa @
    identifier mode_match.exit;
    @@
    -exit(...) {...}

    @ depends on enter_match_8787 || enter_match_55 || exit_match_aa @
    @@
     #include <device/pnp.h>
    +#include <superio/conf_mode.h>

    @ mode_match_55_aa @
    identifier ops;
    @@
     struct pnp_mode_ops ops = {
             .enter_conf_mode  = pnp_enter_conf_mode_55,
             .exit_conf_mode   = pnp_exit_conf_mode_aa,
     };

    @@
    identifier mode_match_55_aa.ops;
    @@
    -struct pnp_mode_ops ops = {...};

    @@
    identifier mode_match_55_aa.ops, devops;
    @@
     struct device_operations devops = {
    -        .ops_pnp_mode     = &ops,
    +        .ops_pnp_mode     = &pnp_conf_mode_55_aa,
     };

    @ mode_match_8787_aa @
    identifier ops;
    @@
     struct pnp_mode_ops ops = {
             .enter_conf_mode  = pnp_enter_conf_mode_8787,
             .exit_conf_mode   = pnp_exit_conf_mode_aa,
     };

    @@
    identifier mode_match_8787_aa.ops;
    @@
    -struct pnp_mode_ops ops = {...};

    @@
    identifier mode_match_8787_aa.ops, devops;
    @@
     struct device_operations devops = {
    -        .ops_pnp_mode     = &ops,
    +        .ops_pnp_mode     = &pnp_conf_mode_8787_aa,
     };

Change-Id: I1480336b54523cc95210d99cf31c1a0b3a14b464
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: http://review.coreboot.org/3484
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

28 files changed, 136 insertions, 451 deletions

diff --git a/src/include/superio/conf_mode.h b/src/include/superio/conf_mode.h
new file mode 100644
index 0000000000..b93b889a96
--- /dev/null
+++ b/src/include/superio/conf_mode.h
@@ -0,0 +1,34 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Nico Huber <nico.h@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef DEVICE_PNP_CONF_MODE_H
+#define DEVICE_PNP_CONF_MODE_H
+
+#include <device/device.h>
+#include <device/pnp.h>
+
+/* Common enter/exit implementations */
+void pnp_enter_conf_mode_55(device_t dev);
+void pnp_enter_conf_mode_8787(device_t dev);
+void pnp_exit_conf_mode_aa(device_t dev);
+
+extern const struct pnp_mode_ops pnp_conf_mode_55_aa;
+extern const struct pnp_mode_ops pnp_conf_mode_8787_aa;
+
+#endif
diff --git a/src/superio/Makefile.inc b/src/superio/Makefile.inc
index ff4d48f811..e34fa89cb2 100644
--- a/src/superio/Makefile.inc
+++ b/src/superio/Makefile.inc
@@ -28,3 +28,4 @@ subdirs-y += smsc
 subdirs-y += via
 subdirs-y += winbond
 
+ramstage-$(CONFIG_ARCH_X86) += common/conf_mode.c
diff --git a/src/superio/common/conf_mode.c b/src/superio/common/conf_mode.c
new file mode 100644
index 0000000000..40583ffc49
--- /dev/null
+++ b/src/superio/common/conf_mode.c
@@ -0,0 +1,50 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Nico Huber <nico.h@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <arch/io.h>
+#include <device/device.h>
+#include <superio/conf_mode.h>
+
+/* Common enter/exit implementations */
+
+void pnp_enter_conf_mode_55(device_t dev)
+{
+	outb(0x55, dev->path.pnp.port);
+}
+
+void pnp_enter_conf_mode_8787(device_t dev)
+{
+	outb(0x87, dev->path.pnp.port);
+	outb(0x87, dev->path.pnp.port);
+}
+
+void pnp_exit_conf_mode_aa(device_t dev)
+{
+	outb(0xaa, dev->path.pnp.port);
+}
+
+const struct pnp_mode_ops pnp_conf_mode_55_aa = {
+	.enter_conf_mode = pnp_enter_conf_mode_55,
+	.exit_conf_mode  = pnp_exit_conf_mode_aa,
+};
+
+const struct pnp_mode_ops pnp_conf_mode_8787_aa = {
+	.enter_conf_mode = pnp_enter_conf_mode_8787,
+	.exit_conf_mode  = pnp_exit_conf_mode_aa,
+};
diff --git a/src/superio/fintek/f71805f/superio.c b/src/superio/fintek/f71805f/superio.c
index 50c3355ce9..4a31606895 100644
--- a/src/superio/fintek/f71805f/superio.c
+++ b/src/superio/fintek/f71805f/superio.c
@@ -21,22 +21,12 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <stdlib.h>
 #include <uart8250.h>
 #include "f71805f.h"
 
-static void pnp_enter_conf_state(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void f71805f_init(device_t dev)
 {
 	if (!dev->enabled)
@@ -45,18 +35,13 @@ static void f71805f_init(device_t dev)
 	/* TODO: Might potentially need code for HWM or FDC etc. */
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = f71805f_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/fintek/f71859/superio.c b/src/superio/fintek/f71859/superio.c
index 1e5b6ecd4d..2736c0b988 100644
--- a/src/superio/fintek/f71859/superio.c
+++ b/src/superio/fintek/f71859/superio.c
@@ -22,22 +22,12 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <stdlib.h>
 #include <uart8250.h>
 #include "f71859.h"
 
-static void pnp_enter_conf_state(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void f71859_init(device_t dev)
 {
 	if (!dev->enabled)
@@ -46,18 +36,13 @@ static void f71859_init(device_t dev)
 	/* TODO: Might potentially need code for HWM or FDC etc. */
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = f71859_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/fintek/f71863fg/superio.c b/src/superio/fintek/f71863fg/superio.c
index 84a7ec1397..4159e6ddc6 100644
--- a/src/superio/fintek/f71863fg/superio.c
+++ b/src/superio/fintek/f71863fg/superio.c
@@ -21,23 +21,13 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <stdlib.h>
 #include <uart8250.h>
 #include "chip.h"
 #include "f71863fg.h"
 
-static void pnp_enter_conf_state(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void f71863fg_init(device_t dev)
 {
 	struct superio_fintek_f71863fg_config *conf = dev->chip_info;
@@ -55,18 +45,13 @@ static void f71863fg_init(device_t dev)
 	}
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = f71863fg_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/fintek/f71872/superio.c b/src/superio/fintek/f71872/superio.c
index 8db22a9f28..55a11b1b99 100644
--- a/src/superio/fintek/f71872/superio.c
+++ b/src/superio/fintek/f71872/superio.c
@@ -21,22 +21,12 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <stdlib.h>
 #include "chip.h"
 #include "f71872.h"
 
-static void pnp_enter_conf_state(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void f71872_init(device_t dev)
 {
 	struct superio_fintek_f71872_config *conf = dev->chip_info;
@@ -52,18 +42,13 @@ static void f71872_init(device_t dev)
 	}
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = f71872_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/fintek/f71889/superio.c b/src/superio/fintek/f71889/superio.c
index 8de8ae82e3..450f9385c2 100644
--- a/src/superio/fintek/f71889/superio.c
+++ b/src/superio/fintek/f71889/superio.c
@@ -21,23 +21,13 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <stdlib.h>
 #include <uart8250.h>
 #include "chip.h"
 #include "f71889.h"
 
-static void pnp_enter_conf_state(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void f71889_init(device_t dev)
 {
 	struct superio_fintek_f71889_config *conf = dev->chip_info;
@@ -53,18 +43,13 @@ static void f71889_init(device_t dev)
 	}
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = f71889_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/fintek/f81865f/superio.c b/src/superio/fintek/f81865f/superio.c
index 050602c96a..85ac7ba1a2 100644
--- a/src/superio/fintek/f81865f/superio.c
+++ b/src/superio/fintek/f81865f/superio.c
@@ -21,22 +21,12 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <stdlib.h>
 #include "chip.h"
 #include "f81865f.h"
 
-static void pnp_enter_conf_state(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void f81865f_init(device_t dev)
 {
 	struct superio_fintek_f81865f_config *conf = dev->chip_info;
@@ -52,18 +42,13 @@ static void f81865f_init(device_t dev)
 	}
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = f81865f_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/nuvoton/nct5104d/superio.c b/src/superio/nuvoton/nct5104d/superio.c
index c8b696dab0..5eb8991b39 100755
--- a/src/superio/nuvoton/nct5104d/superio.c
+++ b/src/superio/nuvoton/nct5104d/superio.c
@@ -20,36 +20,21 @@
 
 #include <arch/io.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <stdlib.h>
 #include "nct5104d.h"
 
-static void pnp_enter_exteded_mode(device_t dev)
-{
-	outb(0x87,dev->path.pnp.port);
-	outb(0x87,dev->path.pnp.port);
-}
-
-static void pnp_exit_extended_mode(device_t dev)
-{
-	outb(0xaa,dev->path.pnp.port);
-}
-
 static void nct5104d_init(device_t dev)
 {
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_exteded_mode,
-	.exit_conf_mode   = pnp_exit_extended_mode,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = nct5104d_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/smsc/kbc1100/superio.c b/src/superio/smsc/kbc1100/superio.c
index a6d0ef0b64..c56694ca24 100644
--- a/src/superio/smsc/kbc1100/superio.c
+++ b/src/superio/smsc/kbc1100/superio.c
@@ -22,6 +22,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
@@ -35,26 +36,18 @@
 static void enable_dev(device_t dev);
 static void kbc1100_init(device_t dev);
 
-static void pnp_enter_conf_state(device_t dev);
-static void pnp_exit_conf_state(device_t dev);
-
 struct chip_operations superio_smsc_kbc1100_ops = {
   CHIP_NAME("SMSC KBC1100 Super I/O")
   .enable_dev = enable_dev
 };
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
   .read_resources   = pnp_read_resources,
   .set_resources    = pnp_set_resources,
   .enable_resources = pnp_enable_resources,
   .enable           = pnp_alt_enable,
   .init             = kbc1100_init,
-  .ops_pnp_mode     = &pnp_conf_mode_ops,
+  .ops_pnp_mode     = &pnp_conf_mode_55_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
@@ -86,13 +79,3 @@ static void kbc1100_init(device_t dev)
     break;
   }
 }
-
-static void pnp_enter_conf_state(device_t dev)
-{
-  outb(0x55, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-  outb(0xaa, dev->path.pnp.port);
-}
diff --git a/src/superio/smsc/lpc47b272/superio.c b/src/superio/smsc/lpc47b272/superio.c
index d06f09457e..8901ec4460 100644
--- a/src/superio/smsc/lpc47b272/superio.c
+++ b/src/superio/smsc/lpc47b272/superio.c
@@ -26,6 +26,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
@@ -38,9 +39,6 @@
 /* Forward declarations */
 static void enable_dev(device_t dev);
 static void lpc47b272_init(device_t dev);
-
-static void pnp_enter_conf_state(device_t dev);
-static void pnp_exit_conf_state(device_t dev);
 // static void dump_pnp_device(device_t dev);
 
 struct chip_operations superio_smsc_lpc47b272_ops = {
@@ -48,18 +46,13 @@ struct chip_operations superio_smsc_lpc47b272_ops = {
 	.enable_dev = enable_dev
 };
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = lpc47b272_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_55_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
@@ -105,16 +98,6 @@ static void lpc47b272_init(device_t dev)
 	}
 }
 
-static void pnp_enter_conf_state(device_t dev)
-{
-	outb(0x55, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 #if 0
 /**
  * Print the values of all of the LPC47B272's configuration registers.
diff --git a/src/superio/smsc/lpc47b397/superio.c b/src/superio/smsc/lpc47b397/superio.c
index 850b7bbbf4..ff6e4051ad 100644
--- a/src/superio/smsc/lpc47b397/superio.c
+++ b/src/superio/smsc/lpc47b397/superio.c
@@ -23,6 +23,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
@@ -32,16 +33,6 @@
 #include "chip.h"
 #include "lpc47b397.h"
 
-static void pnp_enter_conf_state(device_t dev)
-{
-	outb(0x55, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void pnp_write_index(u16 port, u8 reg, u8 value)
 {
 	outb(reg, port);
@@ -94,18 +85,13 @@ static void lpc47b397_pnp_enable_resources(device_t dev)
 	pnp_exit_conf_mode(dev);
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = lpc47b397_pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = lpc47b397_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_55_aa,
 };
 
 #define HWM_INDEX 0
@@ -165,7 +151,7 @@ static struct device_operations ops_hwm = {
 	.init             = lpc47b397_init,
 	.scan_bus         = scan_static_bus,
 	.ops_smbus_bus    = &lops_smbus_bus,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_55_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/smsc/lpc47m10x/superio.c b/src/superio/smsc/lpc47m10x/superio.c
index 925defa526..c1f3c2c1bb 100644
--- a/src/superio/smsc/lpc47m10x/superio.c
+++ b/src/superio/smsc/lpc47m10x/superio.c
@@ -25,6 +25,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
@@ -37,9 +38,6 @@
 /* Forward declarations */
 static void enable_dev(device_t dev);
 static void lpc47m10x_init(device_t dev);
-
-static void pnp_enter_conf_state(device_t dev);
-static void pnp_exit_conf_state(device_t dev);
 // static void dump_pnp_device(device_t dev);
 
 struct chip_operations superio_smsc_lpc47m10x_ops = {
@@ -47,18 +45,13 @@ struct chip_operations superio_smsc_lpc47m10x_ops = {
 	.enable_dev = enable_dev
 };
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = lpc47m10x_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_55_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
@@ -104,16 +97,6 @@ static void lpc47m10x_init(device_t dev)
 	}
 }
 
-static void pnp_enter_conf_state(device_t dev)
-{
-	outb(0x55, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 #if 0
 /**
  * Print the values of all of the LPC47M10X2's configuration registers.
diff --git a/src/superio/smsc/lpc47m15x/superio.c b/src/superio/smsc/lpc47m15x/superio.c
index a3b8fc5e73..7e400fc500 100644
--- a/src/superio/smsc/lpc47m15x/superio.c
+++ b/src/superio/smsc/lpc47m15x/superio.c
@@ -22,6 +22,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
@@ -35,26 +36,18 @@
 static void enable_dev(device_t dev);
 static void lpc47m15x_init(device_t dev);
 
-static void pnp_enter_conf_state(device_t dev);
-static void pnp_exit_conf_state(device_t dev);
-
 struct chip_operations superio_smsc_lpc47m15x_ops = {
 	CHIP_NAME("SMSC LPC47M15x/192/997 Super I/O")
 	.enable_dev = enable_dev
 };
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = lpc47m15x_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_55_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
@@ -84,13 +77,3 @@ static void lpc47m15x_init(device_t dev)
 		break;
 	}
 }
-
-static void pnp_enter_conf_state(device_t dev)
-{
-	outb(0x55, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
diff --git a/src/superio/smsc/mec1308/superio.c b/src/superio/smsc/mec1308/superio.c
index 0385b26b90..448800ebec 100644
--- a/src/superio/smsc/mec1308/superio.c
+++ b/src/superio/smsc/mec1308/superio.c
@@ -22,6 +22,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
@@ -33,16 +34,6 @@
 #include <arch/acpi.h>
 #endif
 
-static void pnp_enter_conf_state(device_t dev)
-{
-	outb(0x55, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void mec1308_init(device_t dev)
 {
 	struct superio_smsc_mec1308_config *conf = dev->chip_info;
@@ -61,18 +52,13 @@ static void mec1308_init(device_t dev)
 	}
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = mec1308_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_55_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/smsc/sch4037/superio.c b/src/superio/smsc/sch4037/superio.c
index 254b8386ba..96d35fe3ed 100644
--- a/src/superio/smsc/sch4037/superio.c
+++ b/src/superio/smsc/sch4037/superio.c
@@ -22,6 +22,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
@@ -35,26 +36,18 @@
 static void enable_dev(device_t dev);
 static void sch4037_init(device_t dev);
 
-static void pnp_enter_conf_state(device_t dev);
-static void pnp_exit_conf_state(device_t dev);
-
 struct chip_operations superio_smsc_sch4037_ops = {
 	CHIP_NAME("SMSC SCH4037 Super I/O")
 		.enable_dev = enable_dev,
 };
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = sch4037_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_55_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
@@ -85,13 +78,3 @@ static void sch4037_init(device_t dev)
 			break;
 	}
 }
-
-static void pnp_enter_conf_state(device_t dev)
-{
-	outb(0x55, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
diff --git a/src/superio/smsc/sio1036/superio.c b/src/superio/smsc/sio1036/superio.c
index 2ce2af2787..ff7b5d1252 100644
--- a/src/superio/smsc/sio1036/superio.c
+++ b/src/superio/smsc/sio1036/superio.c
@@ -22,6 +22,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <device/smbus.h>
 #include <string.h>
@@ -35,26 +36,18 @@
 static void enable_dev(device_t dev);
 static void sio1036_init(device_t dev);
 
-static void pnp_enter_conf_state(device_t dev);
-static void pnp_exit_conf_state(device_t dev);
-
 struct chip_operations superio_smsc_sio1036_ops = {
 	CHIP_NAME("SMSC SIO1036 Super I/O")
 		.enable_dev = enable_dev
 };
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_conf_state,
-	.exit_conf_mode   = pnp_exit_conf_state,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = sio1036_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_55_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
@@ -84,13 +77,3 @@ static void sio1036_init(device_t dev)
 	}
 }
 
-static void pnp_enter_conf_state(device_t dev)
-{
-	outb(0x55, dev->path.pnp.port);
-}
-
-static void pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
diff --git a/src/superio/smsc/smscsuperio/superio.c b/src/superio/smsc/smscsuperio/superio.c
index d45a9671c1..42a9c09a00 100644
--- a/src/superio/smsc/smscsuperio/superio.c
+++ b/src/superio/smsc/smscsuperio/superio.c
@@ -37,6 +37,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
@@ -144,32 +145,6 @@ static const struct logical_devices {
 };
 
 /**
- * Enter the configuration state by writing 0x55 to the config port.
- *
- * The Super I/O configuration registers can only be modified when the chip
- * is in the configuration state. Thus, to program the registers you have
- * to a) enter config mode, b) program the registers, c) exit config mode.
- *
- * @param dev The device to use.
- */
-static void smsc_pnp_enter_conf_state(device_t dev)
-{
-	outb(0x55, dev->path.pnp.port);
-}
-
-/**
- * Exit the configuration state by writing 0xaa to the config port.
- *
- * This puts the chip into the 'run' state again.
- *
- * @param dev The device to use.
- */
-static void smsc_pnp_exit_conf_state(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
-/**
  * Initialize those logical devices which need a special init.
  *
  * @param dev The device to use.
@@ -199,11 +174,6 @@ static void smsc_init(device_t dev)
 	}
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = smsc_pnp_enter_conf_state,
-	.exit_conf_mode   = smsc_pnp_exit_conf_state,
-};
-
 /** Standard device operations. */
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
@@ -211,7 +181,7 @@ static struct device_operations ops = {
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = smsc_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_55_aa,
 };
 
 /**
diff --git a/src/superio/via/vt1211/vt1211.c b/src/superio/via/vt1211/vt1211.c
index 8e09e4a50e..68fd999eb4 100644
--- a/src/superio/via/vt1211/vt1211.c
+++ b/src/superio/via/vt1211/vt1211.c
@@ -23,6 +23,7 @@
 #include <console/console.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <uart8250.h>
 #include <stdlib.h>
 #include "vt1211.h"
@@ -44,17 +45,6 @@ static u8 hwm_io_regs[] = {
 	0x5c,0x00, 0x5f,0x33, 0x40,0x01,
 };
 
-static void pnp_enter_ext_func_mode(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void pnp_exit_ext_func_mode(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void vt1211_set_iobase(device_t dev, u8 index, u16 iobase)
 {
 	switch (dev->path.pnp.device) {
@@ -172,18 +162,13 @@ static void vt1211_pnp_set_resources(struct device *dev)
 	pnp_exit_conf_mode(dev);
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_ext_func_mode,
-	.exit_conf_mode   = pnp_exit_ext_func_mode,
-};
-
 struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = vt1211_pnp_set_resources,
 	.enable_resources = vt1211_pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = vt1211_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 /* TODO: Check if 0x07f8 is correct for FDC/PP/SP1/SP2, the rest is correct. */
diff --git a/src/superio/winbond/w83627dhg/superio.c b/src/superio/winbond/w83627dhg/superio.c
index 537d83490f..a9314196ee 100644
--- a/src/superio/winbond/w83627dhg/superio.c
+++ b/src/superio/winbond/w83627dhg/superio.c
@@ -20,23 +20,13 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <uart8250.h>
 #include <pc80/keyboard.h>
 #include <stdlib.h>
 #include "chip.h"
 #include "w83627dhg.h"
 
-void pnp_enter_ext_func_mode(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-void pnp_exit_ext_func_mode(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void w83627dhg_enable_UR2(device_t dev)
 {
 	u8 reg8;
@@ -65,18 +55,13 @@ static void w83627dhg_init(device_t dev)
 	}
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_ext_func_mode,
-	.exit_conf_mode   = pnp_exit_ext_func_mode,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = w83627dhg_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/winbond/w83627ehg/superio.c b/src/superio/winbond/w83627ehg/superio.c
index 631105b2f8..6f2c9deef3 100644
--- a/src/superio/winbond/w83627ehg/superio.c
+++ b/src/superio/winbond/w83627ehg/superio.c
@@ -24,6 +24,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <string.h>
 #include <uart8250.h>
@@ -33,17 +34,6 @@
 #include "chip.h"
 #include "w83627ehg.h"
 
-static void pnp_enter_ext_func_mode(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void pnp_exit_ext_func_mode(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void pnp_write_index(u16 port, u8 reg, u8 value)
 {
 	outb(reg, port);
@@ -141,18 +131,13 @@ static void w83627ehg_pnp_enable_resources(device_t dev)
 	pnp_exit_conf_mode(dev);
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_ext_func_mode,
-	.exit_conf_mode   = pnp_exit_ext_func_mode,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = w83627ehg_pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = w83627ehg_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/winbond/w83627hf/superio.c b/src/superio/winbond/w83627hf/superio.c
index 4d68c35033..5a4e964dc3 100644
--- a/src/superio/winbond/w83627hf/superio.c
+++ b/src/superio/winbond/w83627hf/superio.c
@@ -24,6 +24,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <string.h>
 #include <uart8250.h>
@@ -33,17 +34,6 @@
 #include "chip.h"
 #include "w83627hf.h"
 
-static void pnp_enter_ext_func_mode(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void pnp_exit_ext_func_mode(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void pnp_write_index(u16 port, u8 reg, u8 value)
 {
 	outb(reg, port);
@@ -148,18 +138,13 @@ static void w83627hf_pnp_enable_resources(device_t dev)
 	pnp_exit_conf_mode(dev);
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_ext_func_mode,
-	.exit_conf_mode   = pnp_exit_ext_func_mode,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = w83627hf_pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = w83627hf_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/winbond/w83627thg/superio.c b/src/superio/winbond/w83627thg/superio.c
index f1c56032c5..257cd0ad76 100644
--- a/src/superio/winbond/w83627thg/superio.c
+++ b/src/superio/winbond/w83627thg/superio.c
@@ -23,6 +23,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <string.h>
 #include <uart8250.h>
@@ -30,17 +31,6 @@
 #include "chip.h"
 #include "w83627thg.h"
 
-static void w83627thg_enter_ext_func_mode(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void w83627thg_exit_ext_func_mode(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void w83627thg_init(device_t dev)
 {
 	struct superio_winbond_w83627thg_config *conf = dev->chip_info;
@@ -55,18 +45,13 @@ static void w83627thg_init(device_t dev)
 	}
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = w83627thg_enter_ext_func_mode,
-	.exit_conf_mode   = w83627thg_exit_ext_func_mode,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_enable,
 	.init             = w83627thg_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/winbond/w83627uhg/superio.c b/src/superio/winbond/w83627uhg/superio.c
index d2cbdc945c..3f1ca38d30 100644
--- a/src/superio/winbond/w83627uhg/superio.c
+++ b/src/superio/winbond/w83627uhg/superio.c
@@ -21,6 +21,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <string.h>
 #include <stdint.h>
@@ -30,17 +31,6 @@
 #include "chip.h"
 #include "w83627uhg.h"
 
-static void w83627uhg_enter_ext_func_mode(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void w83627uhg_exit_ext_func_mode(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 /*
  * Set the UART clock source.
  *
@@ -101,18 +91,13 @@ static void w83627uhg_init(device_t dev)
 	}
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = w83627uhg_enter_ext_func_mode,
-	.exit_conf_mode   = w83627uhg_exit_ext_func_mode,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_enable,
 	.init             = w83627uhg_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/winbond/w83697hf/superio.c b/src/superio/winbond/w83697hf/superio.c
index 9431b34d23..79ebcc9408 100644
--- a/src/superio/winbond/w83697hf/superio.c
+++ b/src/superio/winbond/w83697hf/superio.c
@@ -21,6 +21,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <string.h>
 #include <lib.h>
@@ -30,17 +31,6 @@
 #include "chip.h"
 #include "w83697hf.h"
 
-static void pnp_enter_ext_func_mode(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void pnp_exit_ext_func_mode(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void hwmon_set_fan_divisor(unsigned int base, int num, unsigned int divisor) {
 	unsigned char enc, buf;
 
@@ -81,18 +71,13 @@ static void w83697hf_init(device_t dev)
 	}
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = pnp_enter_ext_func_mode,
-	.exit_conf_mode   = pnp_exit_ext_func_mode,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_alt_enable,
 	.init             = w83697hf_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/winbond/w83977f/superio.c b/src/superio/winbond/w83977f/superio.c
index 8368839d26..6756830dbd 100644
--- a/src/superio/winbond/w83977f/superio.c
+++ b/src/superio/winbond/w83977f/superio.c
@@ -21,6 +21,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <string.h>
 #include <uart8250.h>
@@ -29,17 +30,6 @@
 #include "chip.h"
 #include "w83977f.h"
 
-static void w83977f_enter_ext_func_mode(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void w83977f_exit_ext_func_mode(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void w83977f_init(device_t dev)
 {
 	struct superio_winbond_w83977f_config *conf = dev->chip_info;
@@ -54,18 +44,13 @@ static void w83977f_init(device_t dev)
 	}
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = w83977f_enter_ext_func_mode,
-	.exit_conf_mode   = w83977f_exit_ext_func_mode,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_enable,
 	.init             = w83977f_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {
diff --git a/src/superio/winbond/w83977tf/superio.c b/src/superio/winbond/w83977tf/superio.c
index ff55f5d2f6..0200d26b04 100644
--- a/src/superio/winbond/w83977tf/superio.c
+++ b/src/superio/winbond/w83977tf/superio.c
@@ -23,6 +23,7 @@
 #include <arch/io.h>
 #include <device/device.h>
 #include <device/pnp.h>
+#include <superio/conf_mode.h>
 #include <console/console.h>
 #include <string.h>
 #include <uart8250.h>
@@ -31,17 +32,6 @@
 #include "chip.h"
 #include "w83977tf.h"
 
-static void w83977tf_enter_ext_func_mode(device_t dev)
-{
-	outb(0x87, dev->path.pnp.port);
-	outb(0x87, dev->path.pnp.port);
-}
-
-static void w83977tf_exit_ext_func_mode(device_t dev)
-{
-	outb(0xaa, dev->path.pnp.port);
-}
-
 static void w83977tf_init(device_t dev)
 {
 	struct superio_winbond_w83977tf_config *conf = dev->chip_info;
@@ -56,18 +46,13 @@ static void w83977tf_init(device_t dev)
 	}
 }
 
-static const struct pnp_mode_ops pnp_conf_mode_ops = {
-	.enter_conf_mode  = w83977tf_enter_ext_func_mode,
-	.exit_conf_mode   = w83977tf_exit_ext_func_mode,
-};
-
 static struct device_operations ops = {
 	.read_resources   = pnp_read_resources,
 	.set_resources    = pnp_set_resources,
 	.enable_resources = pnp_enable_resources,
 	.enable           = pnp_enable,
 	.init             = w83977tf_init,
-	.ops_pnp_mode     = &pnp_conf_mode_ops,
+	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
 };
 
 static struct pnp_info pnp_dev_info[] = {