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1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 Copyright (C) 2004 - 2006 rt2x00 SourceForge Project
4 <http://rt2x00.serialmonkey.com>
10 Abstract: EEPROM reader datastructures for 93cx6 chipsets.
11 Supported chipsets: 93c46, 93c56 and 93c66.
15 * EEPROM operation defines.
17 #define PCI_EEPROM_WIDTH_93C46 6
18 #define PCI_EEPROM_WIDTH_93C56 8
19 #define PCI_EEPROM_WIDTH_93C66 8
20 #define PCI_EEPROM_WIDTH_93C86 8
21 #define PCI_EEPROM_WIDTH_OPCODE 3
22 #define PCI_EEPROM_WRITE_OPCODE 0x05
23 #define PCI_EEPROM_ERASE_OPCODE 0x07
24 #define PCI_EEPROM_READ_OPCODE 0x06
25 #define PCI_EEPROM_EWDS_OPCODE 0x10
26 #define PCI_EEPROM_EWEN_OPCODE 0x13
29 * struct eeprom_93cx6 - control structure for setting the commands
30 * for reading the eeprom data.
31 * @data: private pointer for the driver.
32 * @register_read(struct eeprom_93cx6 *eeprom): handler to
33 * read the eeprom register, this function should set all reg_* fields.
34 * @register_write(struct eeprom_93cx6 *eeprom): handler to
35 * write to the eeprom register by using all reg_* fields.
36 * @width: eeprom width, should be one of the PCI_EEPROM_WIDTH_* defines
37 * @drive_data: Set if we're driving the data line.
38 * @reg_data_in: register field to indicate data input
39 * @reg_data_out: register field to indicate data output
40 * @reg_data_clock: register field to set the data clock
41 * @reg_chip_select: register field to set the chip select
43 * This structure is used for the communication between the driver
44 * and the eeprom_93cx6 handlers for reading the eeprom.
49 void (*register_read
)(struct eeprom_93cx6
*eeprom
);
50 void (*register_write
)(struct eeprom_93cx6
*eeprom
);
61 extern void eeprom_93cx6_read(struct eeprom_93cx6
*eeprom
,
62 const u8 word
, u16
*data
);
63 extern void eeprom_93cx6_multiread(struct eeprom_93cx6
*eeprom
,
64 const u8 word
, __le16
*data
, const u16 words
);
65 extern void eeprom_93cx6_readb(struct eeprom_93cx6
*eeprom
,
66 const u8 byte
, u8
*data
);
67 extern void eeprom_93cx6_multireadb(struct eeprom_93cx6
*eeprom
,
68 const u8 byte
, u8
*data
, const u16 bytes
);
70 extern void eeprom_93cx6_wren(struct eeprom_93cx6
*eeprom
, bool enable
);
72 extern void eeprom_93cx6_write(struct eeprom_93cx6
*eeprom
,