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

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * Copyright © 2023 Intel Corporation
   4  */
   5
   6 #ifndef __INTEL_PMDEMAND_H__
   7 #define __INTEL_PMDEMAND_H__
   8
   9 #include "intel_display_limits.h"
  10 #include "intel_global_state.h"
  11
  12 struct drm_i915_private;
  13 struct intel_atomic_state;
  14 struct intel_crtc_state;
  15 struct intel_encoder;
  16 struct intel_plane_state;
  17
  18 struct pmdemand_params {
  19         u16 qclk_gv_bw;
  20         u8 voltage_index;
  21         u8 qclk_gv_index;
  22         u8 active_pipes;
  23         u8 active_dbufs;        /* pre-Xe3 only */
  24         /* Total number of non type C active phys from active_phys_mask */
  25         u8 active_phys;
  26         u8 plls;
  27         u16 cdclk_freq_mhz;
  28         /* max from ddi_clocks[] */
  29         u16 ddiclk_max;
  30         u8 scalers;             /* pre-Xe3 only */
  31 };
  32
  33 struct intel_pmdemand_state {
  34         struct intel_global_state base;
  35
  36         /* Maintain a persistent list of port clocks across all crtcs */
  37         int ddi_clocks[I915_MAX_PIPES];
  38
  39         /* Maintain a persistent list of non type C phys mask */
  40         u16 active_combo_phys_mask;
  41
  42         /* Parameters to be configured in the pmdemand registers */
  43         struct pmdemand_params params;
  44 };
  45
  46 #define to_intel_pmdemand_state(global_state) \
  47         container_of_const((global_state), struct intel_pmdemand_state, base)
  48
  49 void intel_pmdemand_init_early(struct drm_i915_private *i915);
  50 int intel_pmdemand_init(struct drm_i915_private *i915);
  51 void intel_pmdemand_init_pmdemand_params(struct drm_i915_private *i915,
  52                                          struct intel_pmdemand_state *pmdemand_state);
  53 void intel_pmdemand_update_port_clock(struct drm_i915_private *i915,
  54                                       struct intel_pmdemand_state *pmdemand_state,
  55                                       enum pipe pipe, int port_clock);
  56 void intel_pmdemand_update_phys_mask(struct drm_i915_private *i915,
  57                                      struct intel_encoder *encoder,
  58                                      struct intel_pmdemand_state *pmdemand_state,
  59                                      bool clear_bit);
  60 void intel_pmdemand_program_dbuf(struct drm_i915_private *i915,
  61                                  u8 dbuf_slices);
  62 void intel_pmdemand_pre_plane_update(struct intel_atomic_state *state);
  63 void intel_pmdemand_post_plane_update(struct intel_atomic_state *state);
  64 int intel_pmdemand_atomic_check(struct intel_atomic_state *state);
  65
  66 #endif /* __INTEL_PMDEMAND_H__ */