projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 8cc72361 WYC |
1 | /** |
| 2 | * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved. | |
| 3 | * | |
| 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. | |
| 7 | * | |
| 8 | * @File cthardware.c | |
| 9 | * | |
| 10 | * @Brief | |
| 11 | * This file contains the implementation of hardware access methord. | |
| 12 | * | |
| 13 | * @Author Liu Chun | |
| 14 | * @Date Jun 26 2008 | |
| 15 | * | |
| 16 | */ | |
| 17 | ||
| 18 | #include "cthardware.h" | |
| 19 | #include "cthw20k1.h" | |
| 20 | #include "cthw20k2.h" | |
| 21 | #include <linux/bug.h> | |
| 22 | ||
| e23e7a14 BP |
23 | int create_hw_obj(struct pci_dev *pci, enum CHIPTYP chip_type, |
| 24 | enum CTCARDS model, struct hw **rhw) | |
| 8cc72361 | 25 | { |
| 514eef9c | 26 | int err; |
| 8cc72361 | 27 | |
| 9470195a TI |
28 | switch (chip_type) { |
| 29 | case ATC20K1: | |
| 8cc72361 WYC |
30 | err = create_20k1_hw_obj(rhw); |
| 31 | break; | |
| 9470195a | 32 | case ATC20K2: |
| 8cc72361 WYC |
33 | err = create_20k2_hw_obj(rhw); |
| 34 | break; | |
| 35 | default: | |
| 36 | err = -ENODEV; | |
| 37 | break; | |
| 38 | } | |
| 39 | if (err) | |
| 40 | return err; | |
| 41 | ||
| 42 | (*rhw)->pci = pci; | |
| 9470195a TI |
43 | (*rhw)->chip_type = chip_type; |
| 44 | (*rhw)->model = model; | |
| 8cc72361 WYC |
45 | |
| 46 | return 0; | |
| 47 | } | |
| 48 | ||
| 49 | int destroy_hw_obj(struct hw *hw) | |
| 50 | { | |
| 514eef9c | 51 | int err; |
| 8cc72361 WYC |
52 | |
| 53 | switch (hw->pci->device) { | |
| 54 | case 0x0005: /* 20k1 device */ | |
| 55 | err = destroy_20k1_hw_obj(hw); | |
| 56 | break; | |
| 57 | case 0x000B: /* 20k2 device */ | |
| 58 | err = destroy_20k2_hw_obj(hw); | |
| 59 | break; | |
| 60 | default: | |
| 61 | err = -ENODEV; | |
| 62 | break; | |
| 63 | } | |
| 64 | ||
| 65 | return err; | |
| 66 | } | |
| 67 | ||
| 68 | unsigned int get_field(unsigned int data, unsigned int field) | |
| 69 | { | |
| 70 | int i; | |
| 71 | ||
| 29fa9578 TI |
72 | if (WARN_ON(!field)) |
| 73 | return 0; | |
| 8cc72361 WYC |
74 | /* @field should always be greater than 0 */ |
| 75 | for (i = 0; !(field & (1 << i)); ) | |
| 76 | i++; | |
| 77 | ||
| 78 | return (data & field) >> i; | |
| 79 | } | |
| 80 | ||
| 81 | void set_field(unsigned int *data, unsigned int field, unsigned int value) | |
| 82 | { | |
| 83 | int i; | |
| 84 | ||
| 29fa9578 TI |
85 | if (WARN_ON(!field)) |
| 86 | return; | |
| 8cc72361 WYC |
87 | /* @field should always be greater than 0 */ |
| 88 | for (i = 0; !(field & (1 << i)); ) | |
| 89 | i++; | |
| 90 | ||
| 91 | *data = (*data & (~field)) | ((value << i) & field); | |
| 92 | } | |
| 93 |