tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 Copyright (C) 2004 - 2006 rt2x00 SourceForge Project
3 <http://rt2x00.serialmonkey.com>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the
17 Free Software Foundation, Inc.,
18 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 */
20
21/*
22 Module: eeprom_93cx6
23 Abstract: EEPROM reader datastructures for 93cx6 chipsets.
24 Supported chipsets: 93c46 & 93c66.
25 */
26
27/*
28 * EEPROM operation defines.
29 */
30#define PCI_EEPROM_WIDTH_93C46 6
31#define PCI_EEPROM_WIDTH_93C66 8
32#define PCI_EEPROM_WIDTH_OPCODE 3
33#define PCI_EEPROM_WRITE_OPCODE 0x05
34#define PCI_EEPROM_READ_OPCODE 0x06
35#define PCI_EEPROM_EWDS_OPCODE 0x10
36#define PCI_EEPROM_EWEN_OPCODE 0x13
37
38/**
39 * struct eeprom_93cx6 - control structure for setting the commands
40 * for reading the eeprom data.
41 * @data: private pointer for the driver.
42 * @register_read(struct eeprom_93cx6 *eeprom): handler to
43 * read the eeprom register, this function should set all reg_* fields.
44 * @register_write(struct eeprom_93cx6 *eeprom): handler to
45 * write to the eeprom register by using all reg_* fields.
46 * @width: eeprom width, should be one of the PCI_EEPROM_WIDTH_* defines
47 * @reg_data_in: register field to indicate data input
48 * @reg_data_out: register field to indicate data output
49 * @reg_data_clock: register field to set the data clock
50 * @reg_chip_select: register field to set the chip select
51 *
52 * This structure is used for the communication between the driver
53 * and the eeprom_93cx6 handlers for reading the eeprom.
54 */
55struct eeprom_93cx6 {
56 void *data;
57
58 void (*register_read)(struct eeprom_93cx6 *eeprom);
59 void (*register_write)(struct eeprom_93cx6 *eeprom);
60
61 int width;
62
63 char reg_data_in;
64 char reg_data_out;
65 char reg_data_clock;
66 char reg_chip_select;
67};
68
69extern void eeprom_93cx6_read(struct eeprom_93cx6 *eeprom,
70 const u8 word, u16 *data);
71extern void eeprom_93cx6_multiread(struct eeprom_93cx6 *eeprom,
72 const u8 word, __le16 *data, const u16 words);