Commit | Line | Data |
---|---|---|
a8fe58ce MB |
1 | /* |
2 | * Copyright 2015 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 | */ | |
23 | ||
24 | #include <linux/mm.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/device.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/errno.h> | |
29 | ||
30 | #include "acp_gfx_if.h" | |
31 | ||
32 | #define ACP_MODE_I2S 0 | |
33 | #define ACP_MODE_AZ 1 | |
34 | ||
35 | #define mmACP_AZALIA_I2S_SELECT 0x51d4 | |
36 | ||
110e6f26 | 37 | int amd_acp_hw_init(struct cgs_device *cgs_device, |
a8fe58ce MB |
38 | unsigned acp_version_major, unsigned acp_version_minor) |
39 | { | |
40 | unsigned int acp_mode = ACP_MODE_I2S; | |
41 | ||
42 | if ((acp_version_major == 2) && (acp_version_minor == 2)) | |
43 | acp_mode = cgs_read_register(cgs_device, | |
44 | mmACP_AZALIA_I2S_SELECT); | |
45 | ||
46 | if (acp_mode != ACP_MODE_I2S) | |
47 | return -ENODEV; | |
48 | ||
49 | return 0; | |
50 | } |