mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 22:33:18 +00:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
143 lines
2 KiB
C
143 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (c) 2007 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
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*/
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#include <common.h>
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#include "ax88796.h"
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/*
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* Set 1 bit data
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*/
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static void ax88796_bitset(u32 bit)
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{
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/* DATA1 */
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if( bit )
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EEDI_HIGH;
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else
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EEDI_LOW;
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EECLK_LOW;
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udelay(1000);
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EECLK_HIGH;
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udelay(1000);
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EEDI_LOW;
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}
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/*
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* Get 1 bit data
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*/
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static u8 ax88796_bitget(void)
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{
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u8 bit;
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EECLK_LOW;
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udelay(1000);
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/* DATA */
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bit = EEDO;
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EECLK_HIGH;
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udelay(1000);
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return bit;
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}
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/*
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* Send COMMAND to EEPROM
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*/
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static void ax88796_eep_cmd(u8 cmd)
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{
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ax88796_bitset(BIT_DUMMY);
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switch(cmd){
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case MAC_EEP_READ:
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ax88796_bitset(1);
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ax88796_bitset(1);
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ax88796_bitset(0);
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break;
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case MAC_EEP_WRITE:
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ax88796_bitset(1);
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ax88796_bitset(0);
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ax88796_bitset(1);
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break;
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case MAC_EEP_ERACE:
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ax88796_bitset(1);
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ax88796_bitset(1);
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ax88796_bitset(1);
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break;
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case MAC_EEP_EWEN:
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ax88796_bitset(1);
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ax88796_bitset(0);
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ax88796_bitset(0);
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break;
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case MAC_EEP_EWDS:
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ax88796_bitset(1);
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ax88796_bitset(0);
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ax88796_bitset(0);
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break;
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default:
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break;
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}
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}
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static void ax88796_eep_setaddr(u16 addr)
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{
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int i ;
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for( i = 7 ; i >= 0 ; i-- )
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ax88796_bitset(addr & (1 << i));
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}
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/*
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* Get data from EEPROM
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*/
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static u16 ax88796_eep_getdata(void)
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{
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ushort data = 0;
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int i;
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ax88796_bitget(); /* DUMMY */
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for( i = 0 ; i < 16 ; i++ ){
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data <<= 1;
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data |= ax88796_bitget();
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}
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return data;
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}
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static void ax88796_mac_read(u8 *buff)
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{
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int i ;
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u16 data;
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u16 addr = 0;
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for( i = 0 ; i < 3; i++ )
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{
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EECS_HIGH;
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EEDI_LOW;
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udelay(1000);
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/* READ COMMAND */
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ax88796_eep_cmd(MAC_EEP_READ);
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/* ADDRESS */
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ax88796_eep_setaddr(addr++);
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/* GET DATA */
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data = ax88796_eep_getdata();
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*buff++ = (uchar)(data & 0xff);
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*buff++ = (uchar)((data >> 8) & 0xff);
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EECLK_LOW;
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EEDI_LOW;
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EECS_LOW;
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}
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}
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int get_prom(u8* mac_addr, u8* base_addr)
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{
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u8 prom[32];
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int i;
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ax88796_mac_read(prom);
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for (i = 0; i < 6; i++){
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mac_addr[i] = prom[i];
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}
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return 1;
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}
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