1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2023 Intel Corporation 4 */ 5 6 #ifndef __INTEL_LINK_BW_H__ 7 #define __INTEL_LINK_BW_H__ 8 9 #include <linux/types.h> 10 11 #include "intel_display_limits.h" 12 13 struct drm_i915_private; 14 15 struct intel_atomic_state; 16 struct intel_crtc_state; 17 18 struct intel_link_bw_limits { 19 u8 bpp_limit_reached_pipes; 20 /* in 1/16 bpp units */ 21 int max_bpp_x16[I915_MAX_PIPES]; 22 }; 23 24 void intel_link_bw_init_limits(struct drm_i915_private *i915, 25 struct intel_link_bw_limits *limits); 26 int intel_link_bw_reduce_bpp(struct intel_atomic_state *state, 27 struct intel_link_bw_limits *limits, 28 u8 pipe_mask, 29 const char *reason); 30 bool intel_link_bw_set_bpp_limit_for_pipe(struct intel_atomic_state *state, 31 const struct intel_link_bw_limits *old_limits, 32 struct intel_link_bw_limits *new_limits, 33 enum pipe pipe); 34 int intel_link_bw_atomic_check(struct intel_atomic_state *state, 35 struct intel_link_bw_limits *new_limits); 36 37 #endif 38