mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 16:07:57 +07:00
7ff28aee40
Add read-only support for EEPROMs configured in 8-bit mode (ORG pin connected to GND). This will be used by wd719x driver. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
/*
|
|
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);
|