xref: /linux/drivers/gpu/drm/i915/display/intel_dsb.h (revision e04e2b760ddbe3d7b283a05898c3a029085cd8cd)
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_dsb;
17 
18 enum intel_dsb_id {
19 	INTEL_DSB_0,
20 	INTEL_DSB_1,
21 	INTEL_DSB_2,
22 
23 	I915_MAX_DSBS,
24 };
25 
26 struct intel_dsb *intel_dsb_prepare(struct intel_atomic_state *state,
27 				    struct intel_crtc *crtc,
28 				    enum intel_dsb_id dsb_id,
29 				    unsigned int max_cmds);
30 void intel_dsb_finish(struct intel_dsb *dsb);
31 void intel_dsb_cleanup(struct intel_dsb *dsb);
32 void intel_dsb_reg_write(struct intel_dsb *dsb,
33 			 i915_reg_t reg, u32 val);
34 void intel_dsb_reg_write_masked(struct intel_dsb *dsb,
35 				i915_reg_t reg, u32 mask, u32 val);
36 void intel_dsb_noop(struct intel_dsb *dsb, int count);
37 void intel_dsb_nonpost_start(struct intel_dsb *dsb);
38 void intel_dsb_nonpost_end(struct intel_dsb *dsb);
39 
40 void intel_dsb_commit(struct intel_dsb *dsb,
41 		      bool wait_for_vblank);
42 void intel_dsb_wait(struct intel_dsb *dsb);
43 
44 #endif
45