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 11 struct intel_encoder; 12 struct intel_crtc_state; 13 14 struct hsw_ddi_buf_trans { 15 u32 trans1; /* balance leg enable, de-emph level */ 16 u32 trans2; /* vref sel, vswing */ 17 u8 i_boost; /* SKL: I_boost; valid: 0x0, 0x1, 0x3, 0x7 */ 18 }; 19 20 struct bxt_ddi_buf_trans { 21 u8 margin; /* swing value */ 22 u8 scale; /* scale value */ 23 u8 enable; /* scale enable */ 24 u8 deemphasis; 25 }; 26 27 struct icl_ddi_buf_trans { 28 u8 dw2_swing_sel; 29 u8 dw7_n_scalar; 30 u8 dw4_cursor_coeff; 31 u8 dw4_post_cursor_2; 32 u8 dw4_post_cursor_1; 33 }; 34 35 struct icl_mg_phy_ddi_buf_trans { 36 u8 cri_txdeemph_override_11_6; 37 u8 cri_txdeemph_override_5_0; 38 u8 cri_txdeemph_override_17_12; 39 }; 40 41 struct tgl_dkl_phy_ddi_buf_trans { 42 u8 vswing; 43 u8 preshoot; 44 u8 de_emphasis; 45 }; 46 47 struct dg2_snps_phy_buf_trans { 48 u8 vswing; 49 u8 pre_cursor; 50 u8 post_cursor; 51 }; 52 53 union intel_ddi_buf_trans_entry { 54 struct hsw_ddi_buf_trans hsw; 55 struct bxt_ddi_buf_trans bxt; 56 struct icl_ddi_buf_trans icl; 57 struct icl_mg_phy_ddi_buf_trans mg; 58 struct tgl_dkl_phy_ddi_buf_trans dkl; 59 struct dg2_snps_phy_buf_trans snps; 60 }; 61 62 struct intel_ddi_buf_trans { 63 const union intel_ddi_buf_trans_entry *entries; 64 u8 num_entries; 65 u8 hdmi_default_entry; 66 }; 67 68 bool is_hobl_buf_trans(const struct intel_ddi_buf_trans *table); 69 70 void intel_ddi_buf_trans_init(struct intel_encoder *encoder); 71 72 #endif 73