| Wai Yew CHAY | 8cc7236 | 2009-05-14 08:05:58 +0200 | [diff] [blame^] | 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 | |
| 23 | static enum CHIPTYP get_chip_type(struct hw *hw) |
| 24 | { |
| 25 | enum CHIPTYP type = ATCNONE; |
| 26 | |
| 27 | switch (hw->pci->device) { |
| 28 | case 0x0005: /* 20k1 device */ |
| 29 | type = ATC20K1; |
| 30 | break; |
| 31 | case 0x000B: /* 20k2 device */ |
| 32 | type = ATC20K2; |
| 33 | break; |
| 34 | default: |
| 35 | type = ATCNONE; |
| 36 | break; |
| 37 | } |
| 38 | |
| 39 | return type; |
| 40 | } |
| 41 | |
| 42 | int create_hw_obj(struct pci_dev *pci, struct hw **rhw) |
| 43 | { |
| 44 | int err = 0; |
| 45 | |
| 46 | switch (pci->device) { |
| 47 | case 0x0005: /* 20k1 device */ |
| 48 | err = create_20k1_hw_obj(rhw); |
| 49 | break; |
| 50 | case 0x000B: /* 20k2 device */ |
| 51 | err = create_20k2_hw_obj(rhw); |
| 52 | break; |
| 53 | default: |
| 54 | err = -ENODEV; |
| 55 | break; |
| 56 | } |
| 57 | if (err) |
| 58 | return err; |
| 59 | |
| 60 | (*rhw)->pci = pci; |
| 61 | (*rhw)->get_chip_type = get_chip_type; |
| 62 | |
| 63 | return 0; |
| 64 | } |
| 65 | |
| 66 | int destroy_hw_obj(struct hw *hw) |
| 67 | { |
| 68 | int err = 0; |
| 69 | |
| 70 | switch (hw->pci->device) { |
| 71 | case 0x0005: /* 20k1 device */ |
| 72 | err = destroy_20k1_hw_obj(hw); |
| 73 | break; |
| 74 | case 0x000B: /* 20k2 device */ |
| 75 | err = destroy_20k2_hw_obj(hw); |
| 76 | break; |
| 77 | default: |
| 78 | err = -ENODEV; |
| 79 | break; |
| 80 | } |
| 81 | |
| 82 | return err; |
| 83 | } |
| 84 | |
| 85 | unsigned int get_field(unsigned int data, unsigned int field) |
| 86 | { |
| 87 | int i; |
| 88 | |
| 89 | BUG_ON(!field); |
| 90 | /* @field should always be greater than 0 */ |
| 91 | for (i = 0; !(field & (1 << i)); ) |
| 92 | i++; |
| 93 | |
| 94 | return (data & field) >> i; |
| 95 | } |
| 96 | |
| 97 | void set_field(unsigned int *data, unsigned int field, unsigned int value) |
| 98 | { |
| 99 | int i; |
| 100 | |
| 101 | BUG_ON(!field); |
| 102 | /* @field should always be greater than 0 */ |
| 103 | for (i = 0; !(field & (1 << i)); ) |
| 104 | i++; |
| 105 | |
| 106 | *data = (*data & (~field)) | ((value << i) & field); |
| 107 | } |
| 108 | |