Commit | Line | Data |
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5765e78e | 1 | // SPDX-License-Identifier: GPL-2.0-only |
8cc72361 WYC |
2 | /** |
3 | * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved. | |
4 | * | |
8cc72361 WYC |
5 | * @File cthardware.c |
6 | * | |
7 | * @Brief | |
8 | * This file contains the implementation of hardware access methord. | |
9 | * | |
10 | * @Author Liu Chun | |
11 | * @Date Jun 26 2008 | |
8cc72361 WYC |
12 | */ |
13 | ||
14 | #include "cthardware.h" | |
15 | #include "cthw20k1.h" | |
16 | #include "cthw20k2.h" | |
17 | #include <linux/bug.h> | |
18 | ||
e23e7a14 BP |
19 | int create_hw_obj(struct pci_dev *pci, enum CHIPTYP chip_type, |
20 | enum CTCARDS model, struct hw **rhw) | |
8cc72361 | 21 | { |
514eef9c | 22 | int err; |
8cc72361 | 23 | |
9470195a TI |
24 | switch (chip_type) { |
25 | case ATC20K1: | |
8cc72361 WYC |
26 | err = create_20k1_hw_obj(rhw); |
27 | break; | |
9470195a | 28 | case ATC20K2: |
8cc72361 WYC |
29 | err = create_20k2_hw_obj(rhw); |
30 | break; | |
31 | default: | |
32 | err = -ENODEV; | |
33 | break; | |
34 | } | |
35 | if (err) | |
36 | return err; | |
37 | ||
38 | (*rhw)->pci = pci; | |
9470195a TI |
39 | (*rhw)->chip_type = chip_type; |
40 | (*rhw)->model = model; | |
8cc72361 WYC |
41 | |
42 | return 0; | |
43 | } | |
44 | ||
45 | int destroy_hw_obj(struct hw *hw) | |
46 | { | |
514eef9c | 47 | int err; |
8cc72361 WYC |
48 | |
49 | switch (hw->pci->device) { | |
50 | case 0x0005: /* 20k1 device */ | |
51 | err = destroy_20k1_hw_obj(hw); | |
52 | break; | |
53 | case 0x000B: /* 20k2 device */ | |
54 | err = destroy_20k2_hw_obj(hw); | |
55 | break; | |
56 | default: | |
57 | err = -ENODEV; | |
58 | break; | |
59 | } | |
60 | ||
61 | return err; | |
62 | } | |
63 | ||
64 | unsigned int get_field(unsigned int data, unsigned int field) | |
65 | { | |
66 | int i; | |
67 | ||
29fa9578 TI |
68 | if (WARN_ON(!field)) |
69 | return 0; | |
8cc72361 WYC |
70 | /* @field should always be greater than 0 */ |
71 | for (i = 0; !(field & (1 << i)); ) | |
72 | i++; | |
73 | ||
74 | return (data & field) >> i; | |
75 | } | |
76 | ||
77 | void set_field(unsigned int *data, unsigned int field, unsigned int value) | |
78 | { | |
79 | int i; | |
80 | ||
29fa9578 TI |
81 | if (WARN_ON(!field)) |
82 | return; | |
8cc72361 WYC |
83 | /* @field should always be greater than 0 */ |
84 | for (i = 0; !(field & (1 << i)); ) | |
85 | i++; | |
86 | ||
87 | *data = (*data & (~field)) | ((value << i) & field); | |
88 | } | |
89 |