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/*

        Copyright (C) 2004 - 2006 rt2x00 SourceForge Project

        <http://rt2x00.serialmonkey.com>

        This program is free software; you can redistribute it and/or modify

        it under the terms of the GNU General Public License as published by

        the Free Software Foundation; either version 2 of the License, or

        (at your option) any later version.

        This program is distributed in the hope that it will be useful,

        but WITHOUT ANY WARRANTY; without even the implied warranty of

        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License

        along with this program; if not, write to the

        Free Software Foundation, Inc.,

        59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 */

/*

        Module: eeprom_93cx6

        Abstract: EEPROM reader datastructures for 93cx6 chipsets.

        Supported chipsets: 93c46, 93c56 and 93c66.

 */

/*

 * EEPROM operation defines.

 */

#define PCI_EEPROM_WIDTH_93C46  6

#define PCI_EEPROM_WIDTH_93C56  8

#define PCI_EEPROM_WIDTH_93C66  8

#define PCI_EEPROM_WIDTH_OPCODE 3

#define PCI_EEPROM_WRITE_OPCODE 0x05

#define PCI_EEPROM_READ_OPCODE  0x06

#define PCI_EEPROM_EWDS_OPCODE  0x10

#define PCI_EEPROM_EWEN_OPCODE  0x13

/**

 * struct eeprom_93cx6 - control structure for setting the commands

 * for reading the eeprom data.

 * @data: private pointer for the driver.

 * @register_read(struct eeprom_93cx6 *eeprom): handler to

 * read the eeprom register, this function should set all reg_* fields.

 * @register_write(struct eeprom_93cx6 *eeprom): handler to

 * write to the eeprom register by using all reg_* fields.

 * @width: eeprom width, should be one of the PCI_EEPROM_WIDTH_* defines

 * @reg_data_in: register field to indicate data input

 * @reg_data_out: register field to indicate data output

 * @reg_data_clock: register field to set the data clock

 * @reg_chip_select: register field to set the chip select

 *

 * This structure is used for the communication between the driver

 * and the eeprom_93cx6 handlers for reading the eeprom.

 */

struct eeprom_93cx6 {

        void *data;

        void (*register_read)(struct eeprom_93cx6 *eeprom);

        void (*register_write)(struct eeprom_93cx6 *eeprom);

        int width;

        char reg_data_in;

        char reg_data_out;

        char reg_data_clock;

        char reg_chip_select;

};

extern void eeprom_93cx6_read(struct eeprom_93cx6 *eeprom,

        const u8 word, u16 *data);

extern void eeprom_93cx6_multiread(struct eeprom_93cx6 *eeprom,

        const u8 word, __le16 *data, const u16 words);