mb/lenovo/x201/dock.c: Use common southbridge gpio code

Change-Id: I885f57f68e30c2a641e84655dc7ea9da141fb83f
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36128
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/lenovo/x201/dock.c b/src/mainboard/lenovo/x201/dock.c
index 04050f2..652a144 100644
--- a/src/mainboard/lenovo/x201/dock.c
+++ b/src/mainboard/lenovo/x201/dock.c
@@ -15,18 +15,14 @@
  * GNU General Public License for more details.
  */
 
-#define __SIMPLE_DEVICE__
 #include <console/console.h>
-#include <arch/io.h>
-#include <device/pci_ops.h>
 #include <device/device.h>
-#include <device/pci.h>
 #include "dock.h"
-#include <southbridge/intel/ibexpeak/pch.h>
+#include <southbridge/intel/common/gpio.h>
 #include <ec/lenovo/h8/h8.h>
 #include <ec/acpi/ec.h>
 
-void h8_mainboard_init_dock (void)
+void h8_mainboard_init_dock(void)
 {
 	if (dock_present()) {
 		printk(BIOS_DEBUG, "dock is connected\n");
@@ -37,30 +33,25 @@
 
 void dock_connect(void)
 {
-	u16 gpiobase = pci_read_config16(PCH_LPC_DEV, GPIO_BASE) & 0xfffc;
-
 	ec_set_bit(0x02, 0);
 	ec_set_bit(0x1a, 0);
 	ec_set_bit(0xfe, 4);
 
-	outl(inl(gpiobase + 0x0c) | (1 << 28), gpiobase + 0x0c);
+	set_gpio(28, GPIO_LEVEL_HIGH);
 }
 
 void dock_disconnect(void)
 {
-	u16 gpiobase = pci_read_config16(PCH_LPC_DEV, GPIO_BASE) & 0xfffc;
-
 	ec_clr_bit(0x02, 0);
 	ec_clr_bit(0x1a, 0);
 	ec_clr_bit(0xfe, 4);
 
-	outl(inl(gpiobase + 0x0c) & ~(1 << 28), gpiobase + 0x0c);
+	set_gpio(28, GPIO_LEVEL_LOW);
 }
 
 int dock_present(void)
 {
-	u16 gpiobase = pci_read_config16(PCH_LPC_DEV, GPIO_BASE) & 0xfffc;
-	u8 st = inb(gpiobase + 0x0c);
+	const int dock_id_gpio[] = { 3, 4, 5, -1};
 
-	return ((st >> 3) & 7) != 7;
+	return get_gpios(dock_id_gpio) != 7;
 }