lenovo/x200: Enable wacom digitizer support for x200t

This patch is based on commit f2b3cd63
(lenovo/x60: Support digitizer on X60t and X201t)

Tested on Thinkpad X200 Tablet (7450): all pen functionallity
works (i.e. movements, presure sensitivity and buttons)

Change-Id: I9bd18642a6ea4211dc3be065456a507fc0b72561
Signed-off-by: Alex David <opdecirkel@gmail.com>
Reviewed-on: http://review.coreboot.org/10208
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>

src/drivers/lenovo/wacom.c

@@ -34,10 +34,11 @@ static const char tablet_numbers[][5] = {
 	"6363", "6364", "6365", "6366",
 	"6367", "6368", "7762", "7763",
 	"7764", "7767", "7768", "7769",
+	/* X200t. */
+	"7448", "7449", "7450", "7453",
 	/* X201t. */
 	"0053", "0831", "2985", "3093",
 	"3113", "3144", "3239", "4184",
-	"7448", "7449", "7450", "7453",
 	"2263", "2266",
 };
 

src/mainboard/lenovo/x200/Kconfig

@@ -21,6 +21,8 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select MAINBOARD_HAS_NATIVE_VGA_INIT
 	select MAINBOARD_HAS_NATIVE_VGA_INIT_TEXTMODECFG
 	select INTEL_INT15
+	select SUPERIO_NSC_PC87382
+	select DRIVERS_LENOVO_WACOM
 
 config MAINBOARD_DIR
 	string

src/mainboard/lenovo/x200/Kconfig.name

@@ -1,2 +1,2 @@
 config BOARD_LENOVO_X200
-	bool "ThinkPad X200"
+	bool "ThinkPad X200 / X200t"

src/mainboard/lenovo/x200/devicetree.cb

@@ -176,6 +176,22 @@ chip northbridge/intel/gm45
 					register "eventc_enable" = "0xff"
 					register "eventd_enable" = "0xff"
 				end
+
+				chip superio/nsc/pc87382
+					device pnp 164e.3 on # Digitizer
+						io 0x60 = 0x200
+						irq 0x29 = 0xb0
+						irq 0x70 = 0x5
+						irq 0xf0 = 0x82
+					end
+					# IR, not connected
+					device pnp 164e.2 off end
+					# GPIO, not connected
+					device pnp 164e.7 off end
+					# DLPC, not connected
+					device pnp 164e.19 off end
+				end
+
 			end
 			device pci 1f.2 on # SATA/IDE 1
 				subsystemid 0x17aa 0x20f8

src/mainboard/lenovo/x200/mainboard.c

@@ -31,6 +31,7 @@
 #include <ec/lenovo/pmh7/pmh7.h>
 #include <ec/acpi/ec.h>
 #include <ec/lenovo/h8/h8.h>
+#include "drivers/lenovo/lenovo.h"
 
 #include "cstates.c" /* Include it, as the linker won't find
 			the overloaded weak function in there. */
@@ -49,6 +50,11 @@ const char *smbios_mainboard_bios_version(void)
 	return s;
 }
 
+static void fill_ssdt(void)
+{
+	drivers_lenovo_serial_ports_ssdt_generate("\\_SB.PCI0.LPCB", 0);
+}
+
 static void mainboard_init(device_t dev)
 {
 	/* This sneaked in here, because X200 SuperIO chip isn't really
@@ -62,6 +68,7 @@ static void mainboard_enable(device_t dev)
 	install_intel_vga_int15_handler(GMA_INT15_ACTIVE_LFP_INT_LVDS, GMA_INT15_PANEL_FIT_CENTERING, GMA_INT15_BOOT_DISPLAY_DEFAULT, 2);
 
 	dev->ops->init = mainboard_init;
+	dev->ops->acpi_fill_ssdt_generator = fill_ssdt;
 }
 
 struct chip_operations mainboard_ops = {