1 /* $NetBSD: amdgpu_dce_i2c.c,v 1.2 2021/12/18 23:45:02 riastradh Exp $ */
2
3 /*
4 * Copyright 2018 Advanced Micro Devices, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: AMD
25 *
26 */
27 #include <sys/cdefs.h>
28 __KERNEL_RCSID(0, "$NetBSD: amdgpu_dce_i2c.c,v 1.2 2021/12/18 23:45:02 riastradh Exp $");
29
30 #include "dce_i2c.h"
31 #include "reg_helper.h"
32
dce_i2c_submit_command(struct resource_pool * pool,struct ddc * ddc,struct i2c_command * cmd)33 bool dce_i2c_submit_command(
34 struct resource_pool *pool,
35 struct ddc *ddc,
36 struct i2c_command *cmd)
37 {
38 struct dce_i2c_hw *dce_i2c_hw;
39 struct dce_i2c_sw dce_i2c_sw = {0};
40
41 if (!ddc) {
42 BREAK_TO_DEBUGGER();
43 return false;
44 }
45
46 if (!cmd) {
47 BREAK_TO_DEBUGGER();
48 return false;
49 }
50
51 dce_i2c_hw = acquire_i2c_hw_engine(pool, ddc);
52
53 if (dce_i2c_hw)
54 return dce_i2c_submit_command_hw(pool, ddc, cmd, dce_i2c_hw);
55
56 dce_i2c_sw.ctx = ddc->ctx;
57 if (dce_i2c_engine_acquire_sw(&dce_i2c_sw, ddc)) {
58 return dce_i2c_submit_command_sw(pool, ddc, cmd, &dce_i2c_sw);
59 }
60
61 return false;
62 }
63