1 /* SPDX-License-Identifier: MIT 2 * 3 * Copyright © 2019 Intel Corporation 4 */ 5 6 #ifndef _INTEL_DSB_H 7 #define _INTEL_DSB_H 8 9 #include <linux/types.h> 10 11 #include "i915_reg_defs.h" 12 13 struct intel_atomic_state; 14 struct intel_crtc; 15 struct intel_crtc_state; 16 struct intel_display; 17 struct intel_dsb; 18 19 enum pipe; 20 21 enum intel_dsb_id { 22 INTEL_DSB_0, 23 INTEL_DSB_1, 24 INTEL_DSB_2, 25 26 I915_MAX_DSBS, 27 }; 28 29 struct intel_dsb *intel_dsb_prepare(struct intel_atomic_state *state, 30 struct intel_crtc *crtc, 31 enum intel_dsb_id dsb_id, 32 unsigned int max_cmds); 33 void intel_dsb_finish(struct intel_dsb *dsb); 34 void intel_dsb_cleanup(struct intel_dsb *dsb); 35 void intel_dsb_reg_write(struct intel_dsb *dsb, 36 i915_reg_t reg, u32 val); 37 void intel_dsb_reg_write_masked(struct intel_dsb *dsb, 38 i915_reg_t reg, u32 mask, u32 val); 39 void intel_dsb_noop(struct intel_dsb *dsb, int count); 40 void intel_dsb_nonpost_start(struct intel_dsb *dsb); 41 void intel_dsb_nonpost_end(struct intel_dsb *dsb); 42 void intel_dsb_wait_scanline_in(struct intel_atomic_state *state, 43 struct intel_dsb *dsb, 44 int lower, int upper); 45 void intel_dsb_wait_scanline_out(struct intel_atomic_state *state, 46 struct intel_dsb *dsb, 47 int lower, int upper); 48 void intel_dsb_chain(struct intel_atomic_state *state, 49 struct intel_dsb *dsb, 50 struct intel_dsb *chained_dsb, 51 bool wait_for_vblank); 52 53 void intel_dsb_commit(struct intel_dsb *dsb, 54 bool wait_for_vblank); 55 void intel_dsb_wait(struct intel_dsb *dsb); 56 57 void intel_dsb_irq_handler(struct intel_display *display, 58 enum pipe pipe, enum intel_dsb_id dsb_id); 59 60 #endif 61