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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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89e536a190
Hook up the 93cx6 eeprom code to the ax88796 driver and modify the ax88796 driver to read out the mac address from the eeprom. We need this for the ax88796 on certain SuperH boards. The pin configuration used to connect the eeprom to the ax88796 on these boards is the same as pointed out by the ax88796 datasheet, so we can probably reuse this code for multiple platforms in the future. Signed-off-by: Magnus Damm <damm@igel.co.jp> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
/*
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Copyright (C) 2004 - 2006 rt2x00 SourceForge Project
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<http://rt2x00.serialmonkey.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the
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Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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Module: eeprom_93cx6
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Abstract: EEPROM reader datastructures for 93cx6 chipsets.
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Supported chipsets: 93c46, 93c56 and 93c66.
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*/
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/*
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* EEPROM operation defines.
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*/
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#define PCI_EEPROM_WIDTH_93C46 6
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#define PCI_EEPROM_WIDTH_93C56 8
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#define PCI_EEPROM_WIDTH_93C66 8
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#define PCI_EEPROM_WIDTH_OPCODE 3
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#define PCI_EEPROM_WRITE_OPCODE 0x05
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#define PCI_EEPROM_READ_OPCODE 0x06
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#define PCI_EEPROM_EWDS_OPCODE 0x10
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#define PCI_EEPROM_EWEN_OPCODE 0x13
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/**
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* struct eeprom_93cx6 - control structure for setting the commands
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* for reading the eeprom data.
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* @data: private pointer for the driver.
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* @register_read(struct eeprom_93cx6 *eeprom): handler to
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* read the eeprom register, this function should set all reg_* fields.
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* @register_write(struct eeprom_93cx6 *eeprom): handler to
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* write to the eeprom register by using all reg_* fields.
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* @width: eeprom width, should be one of the PCI_EEPROM_WIDTH_* defines
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* @reg_data_in: register field to indicate data input
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* @reg_data_out: register field to indicate data output
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* @reg_data_clock: register field to set the data clock
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* @reg_chip_select: register field to set the chip select
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*
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* This structure is used for the communication between the driver
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* and the eeprom_93cx6 handlers for reading the eeprom.
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*/
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struct eeprom_93cx6 {
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void *data;
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void (*register_read)(struct eeprom_93cx6 *eeprom);
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void (*register_write)(struct eeprom_93cx6 *eeprom);
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int width;
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char reg_data_in;
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char reg_data_out;
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char reg_data_clock;
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char reg_chip_select;
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};
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extern void eeprom_93cx6_read(struct eeprom_93cx6 *eeprom,
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const u8 word, u16 *data);
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extern void eeprom_93cx6_multiread(struct eeprom_93cx6 *eeprom,
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const u8 word, __le16 *data, const u16 words);
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