Change in coreboot[master]: drivers/lenovo/hybrid: Add GPIO settings for DDC mux

[Nico Huber (Code Review)]

Nico Huber has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/63529 )

Change subject: drivers/lenovo/hybrid: Add GPIO settings for DDC mux
......................................................................

drivers/lenovo/hybrid: Add GPIO settings for DDC mux

T410 (Nozomi-1) has another GPIO to control DDC muxes independently.

Change-Id: Ib92d07a07e895d325bcd1106184f71106f2ea515
Signed-off-by: Nico Huber 
---
M src/drivers/lenovo/hybrid_graphics/chip.h
M src/drivers/lenovo/hybrid_graphics/hybrid_graphics.c
2 files changed, 12 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/29/63529/1

diff --git a/src/drivers/lenovo/hybrid_graphics/chip.h b/src/drivers/lenovo/hybrid_graphics/chip.h
index b3ea2b6..32922f0 100644
--- a/src/drivers/lenovo/hybrid_graphics/chip.h
+++ b/src/drivers/lenovo/hybrid_graphics/chip.h
@@ -23,6 +23,10 @@
 struct drivers_lenovo_hybrid_graphics_config {
    unsigned int detect_gpio;

+	unsigned int has_ddc_mux_gpio;
+	unsigned int ddc_mux_gpio;
+	unsigned int ddc_integrated_lvl;
+
    unsigned int has_panel_hybrid_gpio;
    unsigned int panel_hybrid_gpio;
    unsigned int panel_integrated_lvl;
diff --git a/src/drivers/lenovo/hybrid_graphics/hybrid_graphics.c b/src/drivers/lenovo/hybrid_graphics/hybrid_graphics.c
index 7a5e20d..f71d2ad 100644
--- a/src/drivers/lenovo/hybrid_graphics/hybrid_graphics.c
+++ b/src/drivers/lenovo/hybrid_graphics/hybrid_graphics.c
@@ -31,6 +31,10 @@
    	printk(BIOS_DEBUG, "Hybrid graphics:"
    	       " Switching panel to discrete GPU.\n");

+		if (config->has_ddc_mux_gpio)
+			set_gpio(config->ddc_mux_gpio,
+				 !config->ddc_integrated_lvl);
+
    	if (config->has_panel_hybrid_gpio)
    		set_gpio(config->panel_hybrid_gpio,
    			 !config->panel_integrated_lvl);
@@ -42,6 +46,10 @@
    	printk(BIOS_DEBUG, "Hybrid graphics:"
    	       " Switching panel to integrated GPU.\n");

+		if (config->has_ddc_mux_gpio)
+			set_gpio(config->ddc_mux_gpio,
+				 config->ddc_integrated_lvl);
+
    	if (config->has_panel_hybrid_gpio)
    		set_gpio(config->panel_hybrid_gpio,
    			 config->panel_integrated_lvl);