1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * @File cthardware.c
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * @Brief
8*4882a593Smuzhiyun * This file contains the implementation of hardware access methord.
9*4882a593Smuzhiyun *
10*4882a593Smuzhiyun * @Author Liu Chun
11*4882a593Smuzhiyun * @Date Jun 26 2008
12*4882a593Smuzhiyun */
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #include "cthardware.h"
15*4882a593Smuzhiyun #include "cthw20k1.h"
16*4882a593Smuzhiyun #include "cthw20k2.h"
17*4882a593Smuzhiyun #include <linux/bug.h>
18*4882a593Smuzhiyun
create_hw_obj(struct pci_dev * pci,enum CHIPTYP chip_type,enum CTCARDS model,struct hw ** rhw)19*4882a593Smuzhiyun int create_hw_obj(struct pci_dev *pci, enum CHIPTYP chip_type,
20*4882a593Smuzhiyun enum CTCARDS model, struct hw **rhw)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun int err;
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun switch (chip_type) {
25*4882a593Smuzhiyun case ATC20K1:
26*4882a593Smuzhiyun err = create_20k1_hw_obj(rhw);
27*4882a593Smuzhiyun break;
28*4882a593Smuzhiyun case ATC20K2:
29*4882a593Smuzhiyun err = create_20k2_hw_obj(rhw);
30*4882a593Smuzhiyun break;
31*4882a593Smuzhiyun default:
32*4882a593Smuzhiyun err = -ENODEV;
33*4882a593Smuzhiyun break;
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun if (err)
36*4882a593Smuzhiyun return err;
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun (*rhw)->pci = pci;
39*4882a593Smuzhiyun (*rhw)->chip_type = chip_type;
40*4882a593Smuzhiyun (*rhw)->model = model;
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun return 0;
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun
destroy_hw_obj(struct hw * hw)45*4882a593Smuzhiyun int destroy_hw_obj(struct hw *hw)
46*4882a593Smuzhiyun {
47*4882a593Smuzhiyun int err;
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun switch (hw->pci->device) {
50*4882a593Smuzhiyun case 0x0005: /* 20k1 device */
51*4882a593Smuzhiyun err = destroy_20k1_hw_obj(hw);
52*4882a593Smuzhiyun break;
53*4882a593Smuzhiyun case 0x000B: /* 20k2 device */
54*4882a593Smuzhiyun err = destroy_20k2_hw_obj(hw);
55*4882a593Smuzhiyun break;
56*4882a593Smuzhiyun default:
57*4882a593Smuzhiyun err = -ENODEV;
58*4882a593Smuzhiyun break;
59*4882a593Smuzhiyun }
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun return err;
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
get_field(unsigned int data,unsigned int field)64*4882a593Smuzhiyun unsigned int get_field(unsigned int data, unsigned int field)
65*4882a593Smuzhiyun {
66*4882a593Smuzhiyun int i;
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun if (WARN_ON(!field))
69*4882a593Smuzhiyun return 0;
70*4882a593Smuzhiyun /* @field should always be greater than 0 */
71*4882a593Smuzhiyun for (i = 0; !(field & (1 << i)); )
72*4882a593Smuzhiyun i++;
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun return (data & field) >> i;
75*4882a593Smuzhiyun }
76*4882a593Smuzhiyun
set_field(unsigned int * data,unsigned int field,unsigned int value)77*4882a593Smuzhiyun void set_field(unsigned int *data, unsigned int field, unsigned int value)
78*4882a593Smuzhiyun {
79*4882a593Smuzhiyun int i;
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun if (WARN_ON(!field))
82*4882a593Smuzhiyun return;
83*4882a593Smuzhiyun /* @field should always be greater than 0 */
84*4882a593Smuzhiyun for (i = 0; !(field & (1 << i)); )
85*4882a593Smuzhiyun i++;
86*4882a593Smuzhiyun
87*4882a593Smuzhiyun *data = (*data & (~field)) | ((value << i) & field);
88*4882a593Smuzhiyun }
89*4882a593Smuzhiyun
90