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5765e78e84
Based on 1 normalized pattern(s): this source file is released under gpl v2 license no other versions see the copying file included in the main directory of this source distribution for the license terms and conditions extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 28 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531081035.780831265@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
90 lines
1.5 KiB
C
90 lines
1.5 KiB
C
// 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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