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-rw-r--r--src/drivers/lenovo/hybrid_graphics/Kconfig3
-rw-r--r--src/drivers/lenovo/hybrid_graphics/Makefile.inc15
-rw-r--r--src/drivers/lenovo/hybrid_graphics/chip.h54
-rw-r--r--src/drivers/lenovo/hybrid_graphics/hybrid_graphics.c72
-rw-r--r--src/drivers/lenovo/hybrid_graphics/hybrid_graphics.h21
-rw-r--r--src/drivers/lenovo/hybrid_graphics/romstage.c95
6 files changed, 260 insertions, 0 deletions
diff --git a/src/drivers/lenovo/hybrid_graphics/Kconfig b/src/drivers/lenovo/hybrid_graphics/Kconfig
new file mode 100644
index 0000000000..389dfb919f
--- /dev/null
+++ b/src/drivers/lenovo/hybrid_graphics/Kconfig
@@ -0,0 +1,3 @@
+config DRIVERS_LENOVO_HYBRID_GRAPHICS
+ bool
+ default n
diff --git a/src/drivers/lenovo/hybrid_graphics/Makefile.inc b/src/drivers/lenovo/hybrid_graphics/Makefile.inc
new file mode 100644
index 0000000000..d9e50797c3
--- /dev/null
+++ b/src/drivers/lenovo/hybrid_graphics/Makefile.inc
@@ -0,0 +1,15 @@
+#
+# This file is part of the coreboot project.
+#
+# 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.
+#
+
+ramstage-$(CONFIG_DRIVERS_LENOVO_HYBRID_GRAPHICS) += hybrid_graphics.c
+romstage-$(CONFIG_DRIVERS_LENOVO_HYBRID_GRAPHICS) += romstage.c
diff --git a/src/drivers/lenovo/hybrid_graphics/chip.h b/src/drivers/lenovo/hybrid_graphics/chip.h
new file mode 100644
index 0000000000..96d7f9c1a9
--- /dev/null
+++ b/src/drivers/lenovo/hybrid_graphics/chip.h
@@ -0,0 +1,54 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Patrick Rudolph <siro@das-labor.org>
+ *
+ * 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.
+ */
+
+#ifndef _LENOVO_HYBRID_GRAPHICS_CHIP_H_
+#define _LENOVO_HYBRID_GRAPHICS_CHIP_H_
+
+#define HYBRID_GRAPHICS_PORT 0xff
+
+#define HYBRID_GRAPHICS_DEVICE 0xf
+
+enum hybrid_graphics_req {
+ HYBRID_GRAPHICS_INTEGRATED = 0,
+ HYBRID_GRAPHICS_DISCRETE = 1,
+ HYBRID_GRAPHICS_DUAL = 2
+};
+
+enum dgpu_detect_lvl {
+ DGPU_INSTALLED = 0,
+ DGPU_NOT_INSTALLED = 1,
+};
+
+#define HYBRID_GRAPHICS_DEFAULT_GPU HYBRID_GRAPHICS_INTEGRATED
+
+struct drivers_lenovo_hybrid_graphics_config {
+ unsigned int detect_gpio;
+
+ unsigned int has_panel_hybrid_gpio;
+ unsigned int panel_hybrid_gpio;
+ unsigned int panel_integrated_lvl;
+
+ unsigned int has_backlight_gpio;
+ unsigned int backlight_gpio;
+ unsigned int backlight_integrated_lvl;
+
+ unsigned int has_dgpu_power_gpio;
+ unsigned int dgpu_power_gpio;
+ unsigned int dgpu_power_off_lvl;
+
+ unsigned int has_thinker1;
+};
+
+#endif /* _LENOVO_HYBRID_GRAPHICS_CHIP_H_ */
diff --git a/src/drivers/lenovo/hybrid_graphics/hybrid_graphics.c b/src/drivers/lenovo/hybrid_graphics/hybrid_graphics.c
new file mode 100644
index 0000000000..4fa5b81e8e
--- /dev/null
+++ b/src/drivers/lenovo/hybrid_graphics/hybrid_graphics.c
@@ -0,0 +1,72 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Patrick Rudolph <siro@das-labor.org>
+ *
+ * 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 <types.h>
+#include <option.h>
+#include <device/device.h>
+
+#include <southbridge/intel/common/gpio.h>
+#include <console/console.h>
+#include "chip.h"
+
+/*
+ * Switch panel mux or backlight mux to active GPU.
+ * In case both GPUs are active switch panel mux to integrated.
+ */
+static void lenovo_hybrid_graphics_enable(struct device *dev)
+{
+ const struct drivers_lenovo_hybrid_graphics_config *config;
+ enum hybrid_graphics_req mode = HYBRID_GRAPHICS_DEFAULT_GPU;
+
+ /* Don't confuse anyone else and disable the fake device */
+ dev->enabled = 0;
+
+ config = dev->chip_info;
+ if (!config || (get_gpio(config->detect_gpio) == DGPU_NOT_INSTALLED)) {
+ printk(BIOS_DEBUG, "Hybrid graphics: Not installed\n");
+ return;
+ }
+
+ get_option(&mode, "hybrid_graphics_mode");
+
+ if (mode == HYBRID_GRAPHICS_DISCRETE) {
+ printk(BIOS_DEBUG, "Hybrid graphics:"
+ " Switching panel to discrete GPU.\n");
+
+ if (config->has_panel_hybrid_gpio)
+ set_gpio(config->panel_hybrid_gpio,
+ !config->panel_integrated_lvl);
+
+ if (config->has_backlight_gpio)
+ set_gpio(config->backlight_gpio,
+ !config->backlight_integrated_lvl);
+ } else {
+ printk(BIOS_DEBUG, "Hybrid graphics:"
+ " Switching panel to integrated GPU.\n");
+
+ if (config->has_panel_hybrid_gpio)
+ set_gpio(config->panel_hybrid_gpio,
+ config->panel_integrated_lvl);
+
+ if (config->has_backlight_gpio)
+ set_gpio(config->backlight_gpio,
+ config->backlight_integrated_lvl);
+ }
+}
+
+struct chip_operations drivers_lenovo_hybrid_graphics_ops = {
+ CHIP_NAME("Lenovo hybrid graphics driver")
+ .enable_dev = &lenovo_hybrid_graphics_enable
+};
diff --git a/src/drivers/lenovo/hybrid_graphics/hybrid_graphics.h b/src/drivers/lenovo/hybrid_graphics/hybrid_graphics.h
new file mode 100644
index 0000000000..b238440caa
--- /dev/null
+++ b/src/drivers/lenovo/hybrid_graphics/hybrid_graphics.h
@@ -0,0 +1,21 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Patrick Rudolph <siro@das-labor.org>
+ *
+ * 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.
+ */
+
+#ifndef _DRIVERS_LENOVO_HYBRID_GRAPHICS_H_
+#define _DRIVERS_LENOVO_HYBRID_GRAPHICS_H_
+
+void early_hybrid_graphics(bool *enable_igd, bool *enable_peg);
+
+#endif /* _DRIVERS_LENOVO_HYBRID_GRAPHICS_CHIP_H_ */
diff --git a/src/drivers/lenovo/hybrid_graphics/romstage.c b/src/drivers/lenovo/hybrid_graphics/romstage.c
new file mode 100644
index 0000000000..9009c5841a
--- /dev/null
+++ b/src/drivers/lenovo/hybrid_graphics/romstage.c
@@ -0,0 +1,95 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Patrick Rudolph <siro@das-labor.org>
+ *
+ * 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 <types.h>
+#include <option.h>
+#include <device/device.h>
+
+#include <southbridge/intel/common/gpio.h>
+#include <ec/lenovo/pmh7/pmh7.h>
+#include <console/console.h>
+#include <delay.h>
+
+#include "hybrid_graphics.h"
+#include "chip.h"
+
+/*
+ * Returns the hybrid graphics presence and user's card preferences.
+ */
+void early_hybrid_graphics(bool *enable_igd, bool *enable_peg)
+{
+ const struct drivers_lenovo_hybrid_graphics_config *config;
+ const struct device *dev;
+ enum hybrid_graphics_req mode = HYBRID_GRAPHICS_DEFAULT_GPU;
+
+ /* TODO: Use generic device instead of dummy PNP device */
+ dev = dev_find_slot_pnp(HYBRID_GRAPHICS_PORT, HYBRID_GRAPHICS_DEVICE);
+
+ if (!dev || !dev->chip_info) {
+ printk(BIOS_ERR, "Hybrid graphics: ERROR\n");
+ *enable_igd = true;
+ *enable_peg = false;
+ return;
+ }
+
+ config = dev->chip_info;
+ if (get_gpio(config->detect_gpio) == DGPU_NOT_INSTALLED) {
+ printk(BIOS_DEBUG, "Hybrid graphics:"
+ " No discrete GPU present.\n");
+ *enable_igd = true;
+ *enable_peg = false;
+ return;
+ }
+
+ get_option(&mode, "hybrid_graphics_mode");
+
+ if (mode == HYBRID_GRAPHICS_DISCRETE) {
+ printk(BIOS_DEBUG, "Hybrid graphics:"
+ " Disabling integrated GPU.\n");
+
+ *enable_igd = false;
+ *enable_peg = true;
+ } else if (mode == HYBRID_GRAPHICS_INTEGRATED) {
+ printk(BIOS_DEBUG, "Hybrid graphics:"
+ " Disabling discrete GPU.\n");
+
+ *enable_igd = true;
+ *enable_peg = false;
+ } else {
+ printk(BIOS_DEBUG, "Hybrid graphics:"
+ " Activating Switchable (both GPUs).\n");
+
+ *enable_igd = true;
+ *enable_peg = true;
+ }
+
+ /*
+ * Need to do power handling here as we know there's a dGPU to
+ * turn off. Support GPIO and Thinker1.
+ */
+ if (!*enable_peg) {
+ if (config->has_dgpu_power_gpio) {
+ set_gpio(config->dgpu_power_gpio,
+ config->dgpu_power_off_lvl);
+ } else if (config->has_thinker1) {
+ pmh7_register_clear_bit(0x50, 7); // DGPU_RST
+ udelay(100);
+ pmh7_register_clear_bit(0x50, 3); // DGPU_PWR
+ } else {
+ printk(BIOS_ERR, "Hybrid graphics:"
+ " FIXME: dGPU power not disabled !\n");
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 15:33:37 +0000