1 files changed, 43 insertions, 0 deletions
diff --git a/src/drivers/apple/hybrid_graphics/gmux.h b/src/drivers/apple/hybrid_graphics/gmux.h
new file mode 100644
index 0000000000..075f9b6ca5
--- /dev/null
+++ b/src/drivers/apple/hybrid_graphics/gmux.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef DRIVERS_APPLE_GMUX_H
+#define DRIVERS_APPLE_GMUX_H
+
+#define GMUX_PORT_VERSION_MAJOR     0x04
+#define GMUX_PORT_VERSION_MINOR     0x05
+#define GMUX_PORT_VERSION_RELEASE   0x06
+
+#define GMUX_PORT_SWITCH_DISPLAY    0x10
+#define GMUX_PORT_SWITCH_DDC        0x28
+#define GMUX_PORT_DISCRETE_POWER    0x50
+#define GMUX_PORT_MAX_BRIGHTNESS    0x70
+#define GMUX_PORT_BRIGHTNESS        0x74
+#define GMUX_PORT_VALUE             0xc2
+#define GMUX_PORT_READ              0xd0
+#define GMUX_PORT_WRITE             0xd4
+
+#define GMUX_PORT_INTERRUPT_ENABLE  0x14
+#define GMUX_INTERRUPT_ENABLE       0xff
+#define GMUX_INTERRUPT_DISABLE      0x00
+
+#define GMUX_BRIGHTNESS_MASK        0x00ffffff
+#define GMUX_MAX_BRIGHTNESS         GMUX_BRIGHTNESS_MASK
+
+#define GMUX_IOSTART                0x700
+
+u8 gmux_index_read8(u8 port);
+u8 gmux_pio_read8(u8 port);
+u8 gmux_read8(const struct device *dev, u8 port);
+
+void gmux_index_write8(u8 port, u8 val);
+void gmux_pio_write8(u8 port, u8 val);
+void gmux_write8(const struct device *dev, u8 port, u8 val);
+
+u32 gmux_index_read32(u8 port);
+u32 gmux_pio_read32(u8 port);
+u32 gmux_read32(const struct device *dev, u8 port);
+
+void gmux_switch(const struct device *dev, bool dgpu);
+void gmux_dgpu_power_enable(const struct device *dev, bool enable);
+
+#endif /* DRIVERS_APPLE_GMUX_H */