2 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
4 * This source file is released under GPL v2 license (no other versions).
5 * See the COPYING file included in the main directory of this source
6 * distribution for the license terms and conditions.
11 * This file contains the implementation of hardware access methord.
18 #include "cthardware.h"
21 #include <linux/bug.h>
23 int create_hw_obj(struct pci_dev *pci, enum CHIPTYP chip_type,
24 enum CTCARDS model, struct hw **rhw)
30 err = create_20k1_hw_obj(rhw);
33 err = create_20k2_hw_obj(rhw);
43 (*rhw)->chip_type = chip_type;
44 (*rhw)->model = model;
49 int destroy_hw_obj(struct hw *hw)
53 switch (hw->pci->device) {
54 case 0x0005: /* 20k1 device */
55 err = destroy_20k1_hw_obj(hw);
57 case 0x000B: /* 20k2 device */
58 err = destroy_20k2_hw_obj(hw);
68 unsigned int get_field(unsigned int data, unsigned int field)
74 /* @field should always be greater than 0 */
75 for (i = 0; !(field & (1 << i)); )
78 return (data & field) >> i;
81 void set_field(unsigned int *data, unsigned int field, unsigned int value)
87 /* @field should always be greater than 0 */
88 for (i = 0; !(field & (1 << i)); )
91 *data = (*data & (~field)) | ((value << i) & field);