mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-16 17:53:38 +09:00
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>
88 lines
1.6 KiB
C
88 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2014
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* Dirk Eibach, Guntermann & Drunck GmbH, dirk.eibach@gdsys.cc
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*/
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#include <common.h>
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#include <gdsys_fpga.h>
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#include <miiphy.h>
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#include "ihs_mdio.h"
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static int ihs_mdio_idle(struct mii_dev *bus)
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{
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struct ihs_mdio_info *info = bus->priv;
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u16 val;
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unsigned int ctr = 0;
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do {
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FPGA_GET_REG(info->fpga, mdio.control, &val);
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udelay(100);
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if (ctr++ > 10)
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return -1;
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} while (!(val & (1 << 12)));
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return 0;
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}
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static int ihs_mdio_reset(struct mii_dev *bus)
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{
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ihs_mdio_idle(bus);
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return 0;
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}
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static int ihs_mdio_read(struct mii_dev *bus, int addr, int dev_addr,
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int regnum)
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{
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struct ihs_mdio_info *info = bus->priv;
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u16 val;
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ihs_mdio_idle(bus);
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FPGA_SET_REG(info->fpga, mdio.control,
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((addr & 0x1f) << 5) | (regnum & 0x1f) | (2 << 10));
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/* wait for rx data available */
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udelay(100);
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FPGA_GET_REG(info->fpga, mdio.rx_data, &val);
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return val;
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}
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static int ihs_mdio_write(struct mii_dev *bus, int addr, int dev_addr,
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int regnum, u16 value)
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{
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struct ihs_mdio_info *info = bus->priv;
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ihs_mdio_idle(bus);
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FPGA_SET_REG(info->fpga, mdio.address_data, value);
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FPGA_SET_REG(info->fpga, mdio.control,
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((addr & 0x1f) << 5) | (regnum & 0x1f) | (1 << 10));
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return 0;
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}
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int ihs_mdio_init(struct ihs_mdio_info *info)
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{
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struct mii_dev *bus = mdio_alloc();
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if (!bus) {
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printf("Failed to allocate FSL MDIO bus\n");
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return -1;
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}
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bus->read = ihs_mdio_read;
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bus->write = ihs_mdio_write;
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bus->reset = ihs_mdio_reset;
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strcpy(bus->name, info->name);
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bus->priv = info;
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return mdio_register(bus);
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}
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