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1 /*
2  * Copyright 2018 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: AMD
23  *
24  */
25 #include "dce_i2c.h"
26 #include "reg_helper.h"
27 
dce_i2c_submit_command(struct resource_pool * pool,struct ddc * ddc,struct i2c_command * cmd)28 bool dce_i2c_submit_command(
29 	struct resource_pool *pool,
30 	struct ddc *ddc,
31 	struct i2c_command *cmd)
32 {
33 	struct dce_i2c_hw *dce_i2c_hw;
34 	struct dce_i2c_sw dce_i2c_sw = {0};
35 
36 	if (!ddc) {
37 		BREAK_TO_DEBUGGER();
38 		return false;
39 	}
40 
41 	if (!cmd) {
42 		BREAK_TO_DEBUGGER();
43 		return false;
44 	}
45 
46 	dce_i2c_hw = acquire_i2c_hw_engine(pool, ddc);
47 
48 	if (dce_i2c_hw)
49 		return dce_i2c_submit_command_hw(pool, ddc, cmd, dce_i2c_hw);
50 
51 	dce_i2c_sw.ctx = ddc->ctx;
52 	if (dce_i2c_engine_acquire_sw(&dce_i2c_sw, ddc)) {
53 		return dce_i2c_submit_command_sw(pool, ddc, cmd, &dce_i2c_sw);
54 	}
55 
56 	return false;
57 }
58