Release 4.15 include/linux/eeprom_93cx6.h

/*
        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_93C86	8

#define PCI_EEPROM_WIDTH_OPCODE	3

#define PCI_EEPROM_WRITE_OPCODE	0x05

#define PCI_EEPROM_ERASE_OPCODE 0x07

#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
 * @drive_data: Set if we're driving the data line.
 * @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 drive_data;
	
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);
extern void eeprom_93cx6_readb(struct eeprom_93cx6 *eeprom,
	const u8 byte, u8 *data);
extern void eeprom_93cx6_multireadb(struct eeprom_93cx6 *eeprom,
	const u8 byte, u8 *data, const u16 bytes);

extern void eeprom_93cx6_wren(struct eeprom_93cx6 *eeprom, bool enable);

extern void eeprom_93cx6_write(struct eeprom_93cx6 *eeprom,
			       u8 addr, u16 data);
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Directory: include/linux

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