1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.h b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.h
new file mode 100644
index 0000000000..2133984a57
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.h
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _INTEL_DDI_BUF_TRANS_H_
+#define _INTEL_DDI_BUF_TRANS_H_
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+struct intel_encoder;
+struct intel_crtc_state;
+
+struct hsw_ddi_buf_trans {
+	u32 trans1;	/* balance leg enable, de-emph level */
+	u32 trans2;	/* vref sel, vswing */
+	u8 i_boost;	/* SKL: I_boost; valid: 0x0, 0x1, 0x3, 0x7 */
+};
+
+struct bxt_ddi_buf_trans {
+	u8 margin;	/* swing value */
+	u8 scale;	/* scale value */
+	u8 enable;	/* scale enable */
+	u8 deemphasis;
+};
+
+struct icl_ddi_buf_trans {
+	u8 dw2_swing_sel;
+	u8 dw7_n_scalar;
+	u8 dw4_cursor_coeff;
+	u8 dw4_post_cursor_2;
+	u8 dw4_post_cursor_1;
+};
+
+struct icl_mg_phy_ddi_buf_trans {
+	u8 cri_txdeemph_override_11_6;
+	u8 cri_txdeemph_override_5_0;
+	u8 cri_txdeemph_override_17_12;
+};
+
+struct tgl_dkl_phy_ddi_buf_trans {
+	u8 vswing;
+	u8 preshoot;
+	u8 de_emphasis;
+};
+
+struct dg2_snps_phy_buf_trans {
+	u8 vswing;
+	u8 pre_cursor;
+	u8 post_cursor;
+};
+
+union intel_ddi_buf_trans_entry {
+	struct hsw_ddi_buf_trans hsw;
+	struct bxt_ddi_buf_trans bxt;
+	struct icl_ddi_buf_trans icl;
+	struct icl_mg_phy_ddi_buf_trans mg;
+	struct tgl_dkl_phy_ddi_buf_trans dkl;
+	struct dg2_snps_phy_buf_trans snps;
+};
+
+struct intel_ddi_buf_trans {
+	const union intel_ddi_buf_trans_entry *entries;
+	u8 num_entries;
+	u8 hdmi_default_entry;
+};
+
+bool is_hobl_buf_trans(const struct intel_ddi_buf_trans *table);
+
+void intel_ddi_buf_trans_init(struct intel_encoder *encoder);
+
+#endif