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author | Ivo van Doorn <ivdoorn@gmail.com> | 2007-05-11 15:59:40 -0400 |
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committer | Jeff Garzik <jeff@garzik.org> | 2007-07-08 22:16:36 -0400 |
commit | 9467d64b0e88763914c01f71ddf591b166c4f526 (patch) | |
tree | 594dca21215cff58b17189ed50071faa154b2f64 /include/linux/eeprom_93cx6.h | |
parent | 7dcca30a32aadb0520417521b0c44f42d09fe05c (diff) | |
download | kernel_samsung_espresso10-9467d64b0e88763914c01f71ddf591b166c4f526.zip kernel_samsung_espresso10-9467d64b0e88763914c01f71ddf591b166c4f526.tar.gz kernel_samsung_espresso10-9467d64b0e88763914c01f71ddf591b166c4f526.tar.bz2 |
[PATCH] Add 93cx6 eeprom library
This patch adds a library for reading from 93cx6 eeproms.
Signed-off-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include/linux/eeprom_93cx6.h')
-rw-r--r-- | include/linux/eeprom_93cx6.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/include/linux/eeprom_93cx6.h b/include/linux/eeprom_93cx6.h new file mode 100644 index 0000000..d774b77 --- /dev/null +++ b/include/linux/eeprom_93cx6.h @@ -0,0 +1,72 @@ +/* + 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 & 93c66. + */ + +/* + * EEPROM operation defines. + */ +#define PCI_EEPROM_WIDTH_93C46 6 +#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); |