mb/lenovo/t400: Switch to new hybrid graphics driver

Use new hybrid graphics driver to get device state.
Move remaining code to romstage.c.

Tested on Lenovo T500:
* Linux 4.11.4 on Fedora 25
* Integrated (using NGI)
* Discrete (using VGA OpROM)
* Switchable (using NGI and VGA OpROM), tested with DRI_PRIME

No regressions found.

Change-Id: Iad2eccaab19c71f11308853ba9326d8186e67c93
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/20793
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

5 files changed, 30 insertions, 93 deletions

diff --git a/src/mainboard/lenovo/t400/Kconfig b/src/mainboard/lenovo/t400/Kconfig
index decbab7f11..8eb5fc54dd 100644
--- a/src/mainboard/lenovo/t400/Kconfig
+++ b/src/mainboard/lenovo/t400/Kconfig
@@ -21,6 +21,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select INTEL_INT15
 	select SUPERIO_NSC_PC87382
 	select SUPERIO_NSC_PC87384
+	select DRIVERS_LENOVO_HYBRID_GRAPHICS
 
 config MAINBOARD_DIR
 	string
diff --git a/src/mainboard/lenovo/t400/Makefile.inc b/src/mainboard/lenovo/t400/Makefile.inc
index 8ac61bbb77..c2c82b6df7 100644
--- a/src/mainboard/lenovo/t400/Makefile.inc
+++ b/src/mainboard/lenovo/t400/Makefile.inc
@@ -17,5 +17,4 @@ romstage-y += dock.c
 
 ramstage-y += dock.c
 ramstage-y += cstates.c
-romstage-y += hybrid_graphics.c
 ramstage-y += blc.c
diff --git a/src/mainboard/lenovo/t400/devicetree.cb b/src/mainboard/lenovo/t400/devicetree.cb
index 1adba8b17d..fd5b514c4a 100644
--- a/src/mainboard/lenovo/t400/devicetree.cb
+++ b/src/mainboard/lenovo/t400/devicetree.cb
@@ -206,6 +206,25 @@ chip northbridge/intel/gm45
 					end
 				end
 
+				chip drivers/lenovo/hybrid_graphics
+					device pnp ff.f on end # dummy
+
+					register "detect_gpio" = "21"
+
+					register "has_panel_hybrid_gpio" = "1"
+					register "panel_hybrid_gpio" = "22"
+					register "panel_integrated_lvl" = "0"
+
+					register "has_backlight_gpio" = "1"
+					register "backlight_gpio" = "19"
+					register "backlight_integrated_lvl" = "0"
+
+					register "has_dgpu_power_gpio" = "1"
+					register "dgpu_power_gpio" = "49"
+					register "dgpu_power_off_lvl" = "0"
+
+					register "has_thinker1" = "0"
+				end
 			end
 			device pci 1f.2 on # SATA/IDE 1
 				subsystemid 0x17aa 0x20f8
diff --git a/src/mainboard/lenovo/t400/hybrid_graphics.c b/src/mainboard/lenovo/t400/hybrid_graphics.c
deleted file mode 100644
index b313ffa49c..0000000000
--- a/src/mainboard/lenovo/t400/hybrid_graphics.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2012 secunet Security Networks AG
- *
- * 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.
- */
-#include <stdint.h>
-#include <string.h>
-#include <southbridge/intel/common/gpio.h>
-#include <northbridge/intel/gm45/gm45.h>
-#include <console/console.h>
-#include <option.h>
-
-#define HYBRID_GRAPHICS_INTEGRATED_ONLY 0
-#define HYBRID_GRAPHICS_DISCRETE_ONLY 1
-#define HYBRID_GRAPHICS_SWITCHABLE 2
-
-#define MUX_GPIO 22
-#define BCL_CTL_GPIO 19
-#define GFX_PWR_EN_GPIO 49
-
-#define HYBRID_DETECT_GPIO 21
-
-void hybrid_graphics_init(sysinfo_t *sysinfo);
-
-static bool hybrid_graphics_installed(void)
-{
-	if (get_gpio(HYBRID_DETECT_GPIO))
-		return false;
-	else
-		return true;
-}
-
-void hybrid_graphics_init(sysinfo_t *sysinfo)
-{
-	/* Set default mode */
-	uint8_t hybrid_graphics_mode =
-	    HYBRID_GRAPHICS_INTEGRATED_ONLY;
-
-	if (!hybrid_graphics_installed()) {
-		printk(BIOS_DEBUG, "Hybrid graphics not installed.\n");
-		/* The display is not connected to a mux or switchable. */
-		sysinfo->enable_igd = 1;
-		sysinfo->enable_peg = 0;
-		return;
-	}
-
-	printk(BIOS_DEBUG, "Hybrid graphics available: ");
-	get_option(&hybrid_graphics_mode, "hybrid_graphics_mode");
-
-	/* Select appropriate hybrid graphics device */
-	switch (hybrid_graphics_mode) {
-	default:
-	case HYBRID_GRAPHICS_INTEGRATED_ONLY:
-		printk(BIOS_DEBUG, "Activating Integrated Only.\n");
-		set_gpio(MUX_GPIO, GPIO_LEVEL_LOW);
-		set_gpio(BCL_CTL_GPIO, GPIO_LEVEL_LOW);
-		set_gpio(GFX_PWR_EN_GPIO, GPIO_LEVEL_LOW);
-
-		sysinfo->enable_igd = 1;
-		sysinfo->enable_peg = 0;
-		break;
-	case HYBRID_GRAPHICS_DISCRETE_ONLY:
-		printk(BIOS_DEBUG, "Activating Discrete Only.\n");
-		set_gpio(MUX_GPIO, GPIO_LEVEL_HIGH);
-		set_gpio(BCL_CTL_GPIO, GPIO_LEVEL_HIGH);
-		set_gpio(GFX_PWR_EN_GPIO, GPIO_LEVEL_HIGH);
-
-		sysinfo->enable_igd = 0;
-		sysinfo->enable_peg = 1;
-		break;
-	case HYBRID_GRAPHICS_SWITCHABLE:
-		printk(BIOS_DEBUG, "Activating Switchable (both GPUs).\n");
-		set_gpio(MUX_GPIO, GPIO_LEVEL_LOW);
-		set_gpio(BCL_CTL_GPIO, GPIO_LEVEL_LOW);
-		set_gpio(GFX_PWR_EN_GPIO, GPIO_LEVEL_HIGH);
-
-		sysinfo->enable_igd = 1;
-		sysinfo->enable_peg = 1;
-		break;
-	}
-}
diff --git a/src/mainboard/lenovo/t400/romstage.c b/src/mainboard/lenovo/t400/romstage.c
index 2d35650b0a..f5d5dd1597 100644
--- a/src/mainboard/lenovo/t400/romstage.c
+++ b/src/mainboard/lenovo/t400/romstage.c
@@ -31,6 +31,7 @@
 #include <console/console.h>
 #include <southbridge/intel/i82801ix/i82801ix.h>
 #include <northbridge/intel/gm45/gm45.h>
+#include <drivers/lenovo/hybrid_graphics/hybrid_graphics.h>
 #include <timestamp.h>
 #include "dock.h"
 #include "gpio.h"
@@ -38,7 +39,15 @@
 #define LPC_DEV PCI_DEV(0, 0x1f, 0)
 #define MCH_DEV PCI_DEV(0, 0, 0)
 
-void hybrid_graphics_init(sysinfo_t *sysinfo);
+static void hybrid_graphics_init(sysinfo_t *sysinfo)
+{
+	bool peg, igd;
+
+	early_hybrid_graphics(&igd, &peg);
+
+	sysinfo->enable_igd = igd;
+	sysinfo->enable_peg = peg;
+}
 
 static void early_lpc_setup(void)
 {