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89 lines
1.5 KiB
89 lines
1.5 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved. |
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* |
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* @File cthardware.c |
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* |
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* @Brief |
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* This file contains the implementation of hardware access methord. |
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* |
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* @Author Liu Chun |
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* @Date Jun 26 2008 |
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*/ |
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#include "cthardware.h" |
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#include "cthw20k1.h" |
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#include "cthw20k2.h" |
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#include <linux/bug.h> |
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int create_hw_obj(struct pci_dev *pci, enum CHIPTYP chip_type, |
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enum CTCARDS model, struct hw **rhw) |
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{ |
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int err; |
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switch (chip_type) { |
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case ATC20K1: |
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err = create_20k1_hw_obj(rhw); |
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break; |
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case ATC20K2: |
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err = create_20k2_hw_obj(rhw); |
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break; |
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default: |
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err = -ENODEV; |
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break; |
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} |
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if (err) |
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return err; |
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(*rhw)->pci = pci; |
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(*rhw)->chip_type = chip_type; |
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(*rhw)->model = model; |
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return 0; |
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} |
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int destroy_hw_obj(struct hw *hw) |
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{ |
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int err; |
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switch (hw->pci->device) { |
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case 0x0005: /* 20k1 device */ |
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err = destroy_20k1_hw_obj(hw); |
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break; |
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case 0x000B: /* 20k2 device */ |
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err = destroy_20k2_hw_obj(hw); |
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break; |
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default: |
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err = -ENODEV; |
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break; |
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} |
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return err; |
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} |
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unsigned int get_field(unsigned int data, unsigned int field) |
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{ |
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int i; |
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if (WARN_ON(!field)) |
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return 0; |
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/* @field should always be greater than 0 */ |
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for (i = 0; !(field & (1 << i)); ) |
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i++; |
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return (data & field) >> i; |
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} |
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void set_field(unsigned int *data, unsigned int field, unsigned int value) |
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{ |
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int i; |
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if (WARN_ON(!field)) |
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return; |
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/* @field should always be greater than 0 */ |
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for (i = 0; !(field & (1 << i)); ) |
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i++; |
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*data = (*data & (~field)) | ((value << i) & field); |
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} |
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