intel_ddi_buf_trans.h revision 1.1 
1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright �� 2020 Intel Corporation
4 */
5
6#ifndef _INTEL_DDI_BUF_TRANS_H_
7#define _INTEL_DDI_BUF_TRANS_H_
8
9#include <linux/types.h>
10
11struct drm_i915_private;
12struct intel_encoder;
13struct intel_crtc_state;
14
15struct hsw_ddi_buf_trans {
16	u32 trans1;	/* balance leg enable, de-emph level */
17	u32 trans2;	/* vref sel, vswing */
18	u8 i_boost;	/* SKL: I_boost; valid: 0x0, 0x1, 0x3, 0x7 */
19};
20
21struct bxt_ddi_buf_trans {
22	u8 margin;	/* swing value */
23	u8 scale;	/* scale value */
24	u8 enable;	/* scale enable */
25	u8 deemphasis;
26};
27
28struct icl_ddi_buf_trans {
29	u8 dw2_swing_sel;
30	u8 dw7_n_scalar;
31	u8 dw4_cursor_coeff;
32	u8 dw4_post_cursor_2;
33	u8 dw4_post_cursor_1;
34};
35
36struct icl_mg_phy_ddi_buf_trans {
37	u32 cri_txdeemph_override_11_6;
38	u32 cri_txdeemph_override_5_0;
39	u32 cri_txdeemph_override_17_12;
40};
41
42struct tgl_dkl_phy_ddi_buf_trans {
43	u32 dkl_vswing_control;
44	u32 dkl_preshoot_control;
45	u32 dkl_de_emphasis_control;
46};
47
48union intel_ddi_buf_trans_entry {
49	struct hsw_ddi_buf_trans hsw;
50	struct bxt_ddi_buf_trans bxt;
51	struct icl_ddi_buf_trans icl;
52	struct icl_mg_phy_ddi_buf_trans mg;
53	struct tgl_dkl_phy_ddi_buf_trans dkl;
54};
55
56struct intel_ddi_buf_trans {
57	const union intel_ddi_buf_trans_entry *entries;
58	u8 num_entries;
59	u8 hdmi_default_entry;
60};
61
62bool is_hobl_buf_trans(const struct intel_ddi_buf_trans *table);
63
64int intel_ddi_hdmi_num_entries(struct intel_encoder *encoder,
65			       const struct intel_crtc_state *crtc_state,
66			       int *default_entry);
67
68void intel_ddi_buf_trans_init(struct intel_encoder *encoder);
69
70#endif
71