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
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;
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 /* The software engine is only available on dce8 */
47 dce_i2c_sw = dce_i2c_acquire_i2c_sw_engine(pool, ddc);
48
49 if (!dce_i2c_sw) {
50 dce_i2c_hw = acquire_i2c_hw_engine(pool, ddc);
51
52 if (!dce_i2c_hw)
53 return false;
54
55 return dce_i2c_submit_command_hw(pool, ddc, cmd, dce_i2c_hw);
56 }
57
58 return dce_i2c_submit_command_sw(pool, ddc, cmd, dce_i2c_sw);
59
60 }