xref: /openbmc/linux/drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h (revision bdeeed09)
1 /* Copyright 2012-15 Advanced Micro Devices, Inc.
2  *
3  * Permission is hereby granted, free of charge, to any person obtaining a
4  * copy of this software and associated documentation files (the "Software"),
5  * to deal in the Software without restriction, including without limitation
6  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
7  * and/or sell copies of the Software, and to permit persons to whom the
8  * Software is furnished to do so, subject to the following conditions:
9  *
10  * The above copyright notice and this permission notice shall be included in
11  * all copies or substantial portions of the Software.
12  *
13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
16  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
17  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
18  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
19  * OTHER DEALINGS IN THE SOFTWARE.
20  *
21  * Authors: AMD
22  *
23  */
24 
25 #ifndef __DC_DMCU_H__
26 #define __DC_DMCU_H__
27 
28 #include "dm_services_types.h"
29 
30 enum dmcu_state {
31 	DMCU_NOT_INITIALIZED = 0,
32 	DMCU_RUNNING = 1
33 };
34 
35 struct dmcu {
36 	struct dc_context *ctx;
37 	const struct dmcu_funcs *funcs;
38 
39 	enum dmcu_state dmcu_state;
40 	struct dmcu_version dmcu_version;
41 	unsigned int cached_wait_loop_number;
42 };
43 
44 struct dmcu_funcs {
45 	bool (*dmcu_init)(struct dmcu *dmcu);
46 	bool (*load_iram)(struct dmcu *dmcu,
47 			unsigned int start_offset,
48 			const char *src,
49 			unsigned int bytes);
50 	void (*set_psr_enable)(struct dmcu *dmcu, bool enable, bool wait);
51 	void (*setup_psr)(struct dmcu *dmcu,
52 			struct dc_link *link,
53 			struct psr_context *psr_context);
54 	void (*get_psr_state)(struct dmcu *dmcu, uint32_t *psr_state);
55 	void (*set_psr_wait_loop)(struct dmcu *dmcu,
56 			unsigned int wait_loop_number);
57 	void (*get_psr_wait_loop)(struct dmcu *dmcu,
58 			unsigned int *psr_wait_loop_number);
59 	bool (*is_dmcu_initialized)(struct dmcu *dmcu);
60 };
61 
62 #endif
63