@@ -25,6 +25,59 @@
#include "intel_display_types.h"
#include "intel_dp_aux_backlight.h"
+/*
+ * DP AUX registers for Intel's proprietary HDR backlight interface. We define
+ * them here since we'll likely be the only driver to ever use these.
+ */
+#define INTEL_EDP_HDR_TCON_CAP0 0x340
+
+#define INTEL_EDP_HDR_TCON_CAP1 0x341
+# define INTEL_EDP_HDR_TCON_2084_DECODE_CAP BIT(0)
+# define INTEL_EDP_HDR_TCON_2020_GAMUT_CAP BIT(1)
+# define INTEL_EDP_HDR_TCON_TONE_MAPPING_CAP BIT(2)
+# define INTEL_EDP_HDR_TCON_SEGMENTED_BACKLIGHT_CAP BIT(3)
+# define INTEL_EDP_HDR_TCON_BRIGHTNESS_NITS_CAP BIT(4)
+# define INTEL_EDP_HDR_TCON_OPTIMIZATION_CAP BIT(5)
+# define INTEL_EDP_HDR_TCON_SDP_COLORIMETRY_CAP BIT(6)
+# define INTEL_EDP_HDR_TCON_SRGB_TO_PANEL_GAMUT_CONVERSION_CAP BIT(7)
+
+#define INTEL_EDP_HDR_TCON_CAP2 0x342
+# define INTEL_EDP_SDR_TCON_BRIGHTNESS_AUX_CAP BIT(0)
+
+#define INTEL_EDP_HDR_TCON_CAP3 0x343
+
+#define INTEL_EDP_HDR_GETSET_CTRL_PARAMS 0x344
+# define INTEL_EDP_HDR_TCON_2084_DECODE_ENABLE BIT(0)
+# define INTEL_EDP_HDR_TCON_2020_GAMUT_ENABLE BIT(1)
+# define INTEL_EDP_HDR_TCON_TONE_MAPPING_ENABLE BIT(2) /* Pre-TGL+ */
+# define INTEL_EDP_HDR_TCON_SEGMENTED_BACKLIGHT_ENABLE BIT(3)
+# define INTEL_EDP_HDR_TCON_BRIGHTNESS_AUX_ENABLE BIT(4)
+# define INTEL_EDP_HDR_TCON_SRGB_TO_PANEL_GAMUT_ENABLE BIT(5)
+/* Bit 6 is reserved */
+# define INTEL_EDP_HDR_TCON_SDP_COLORIMETRY_ENABLE BIT(7)
+
+#define INTEL_EDP_HDR_CONTENT_LUMINANCE 0x346 /* Pre-TGL+ */
+#define INTEL_EDP_HDR_PANEL_LUMINANCE_OVERRIDE 0x34A
+#define INTEL_EDP_SDR_LUMINANCE_LEVEL 0x352
+#define INTEL_EDP_BRIGHTNESS_NITS_LSB 0x354
+#define INTEL_EDP_BRIGHTNESS_NITS_MSB 0x355
+#define INTEL_EDP_BRIGHTNESS_DELAY_FRAMES 0x356
+#define INTEL_EDP_BRIGHTNESS_PER_FRAME_STEPS 0x357
+
+#define INTEL_EDP_BRIGHTNESS_OPTIMIZATION_0 0x358
+# define INTEL_EDP_TCON_USAGE_MASK GENMASK(0, 3)
+# define INTEL_EDP_TCON_USAGE_UNKNOWN 0x0
+# define INTEL_EDP_TCON_USAGE_DESKTOP 0x1
+# define INTEL_EDP_TCON_USAGE_FULL_SCREEN_MEDIA 0x2
+# define INTEL_EDP_TCON_USAGE_FULL_SCREEN_GAMING 0x3
+# define INTEL_EDP_TCON_POWER_MASK BIT(4)
+# define INTEL_EDP_TCON_POWER_DC (0 << 4)
+# define INTEL_EDP_TCON_POWER_AC (1 << 4)
+# define INTEL_EDP_TCON_OPTIMIZATION_STRENGTH_MASK GENMASK(5, 7)
+
+#define INTEL_EDP_BRIGHTNESS_OPTIMIZATION_1 0x359
+
+/* VESA backlight callbacks */
static void set_vesa_backlight_enable(struct intel_dp *intel_dp, bool enable)
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);