drivers/gpu/drm/i915/display/intel_ddi_buf_trans.h

   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 drm_i915_private;
  12 struct intel_encoder;
  13 struct intel_crtc_state;
  14
  15 struct 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
  21 struct bxt_ddi_buf_trans {
  22         u8 margin;      /* swing value */
  23         u8 scale;       /* scale value */
  24         u8 enable;      /* scale enable */
  25         u8 deemphasis;
  26 };
  27
  28 struct cnl_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
  36 struct 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
  42 struct tgl_dkl_phy_ddi_buf_trans {
  43         u32 dkl_vswing_control;
  44         u32 dkl_preshoot_control;
  45         u32 dkl_de_emphasis_control;
  46 };
  47
  48 bool is_hobl_buf_trans(const struct cnl_ddi_buf_trans *table);
  49
  50 int intel_ddi_hdmi_num_entries(struct intel_encoder *encoder,
  51                                const struct intel_crtc_state *crtc_state,
  52                                int *default_entry);
  53
  54 const struct ddi_buf_trans *
  55 intel_ddi_get_buf_trans_edp(struct intel_encoder *encoder, int *n_entries);
  56 const struct ddi_buf_trans *
  57 intel_ddi_get_buf_trans_fdi(struct drm_i915_private *dev_priv,
  58                             int *n_entries);
  59 const struct ddi_buf_trans *
  60 intel_ddi_get_buf_trans_hdmi(struct intel_encoder *encoder,
  61                              int *n_entries);
  62 const struct ddi_buf_trans *
  63 intel_ddi_get_buf_trans_dp(struct intel_encoder *encoder, int *n_entries);
  64
  65 const struct bxt_ddi_buf_trans *
  66 bxt_get_buf_trans(struct intel_encoder *encoder,
  67                   const struct intel_crtc_state *crtc_state,
  68                   int *n_entries);
  69
  70 const struct cnl_ddi_buf_trans *
  71 tgl_get_combo_buf_trans(struct intel_encoder *encoder,
  72                         const struct intel_crtc_state *crtc_state,
  73                         int *n_entries);
  74 const struct tgl_dkl_phy_ddi_buf_trans *
  75 tgl_get_dkl_buf_trans(struct intel_encoder *encoder,
  76                       const struct intel_crtc_state *crtc_state,
  77                       int *n_entries);
  78 const struct cnl_ddi_buf_trans *
  79 jsl_get_combo_buf_trans(struct intel_encoder *encoder,
  80                         const struct intel_crtc_state *crtc_state,
  81                         int *n_entries);
  82 const struct cnl_ddi_buf_trans *
  83 ehl_get_combo_buf_trans(struct intel_encoder *encoder,
  84                         const struct intel_crtc_state *crtc_state,
  85                         int *n_entries);
  86 const struct cnl_ddi_buf_trans *
  87 icl_get_combo_buf_trans(struct intel_encoder *encoder,
  88                         const struct intel_crtc_state *crtc_state,
  89                         int *n_entries);
  90 const struct icl_mg_phy_ddi_buf_trans *
  91 icl_get_mg_buf_trans(struct intel_encoder *encoder,
  92                      const struct intel_crtc_state *crtc_state,
  93                      int *n_entries);
  94
  95 const struct cnl_ddi_buf_trans *
  96 cnl_get_buf_trans(struct intel_encoder *encoder,
  97                   const struct intel_crtc_state *crtc_state,
  98                   int *n_entries);
  99
 100 #endif