u-boot/drivers/net/fsl_mdio.c
Simon Glass caa4daa2ae dm: treewide: Rename 'platdata' variables to just 'plat'
We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).

Rename some of the latter variables to end with 'plat' for consistency.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13 16:51:08 -07:00

255 lines
5.7 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2009-2010, 2013 Freescale Semiconductor, Inc.
* Jun-jie Zhang <b18070@freescale.com>
* Mingkai Hu <Mingkai.hu@freescale.com>
*/
#include <common.h>
#include <miiphy.h>
#include <phy.h>
#include <fsl_mdio.h>
#include <asm/io.h>
#include <linux/errno.h>
#include <tsec.h>
#ifdef CONFIG_DM_MDIO
struct tsec_mdio_priv {
struct tsec_mii_mng __iomem *regs;
};
#endif
void tsec_local_mdio_write(struct tsec_mii_mng __iomem *phyregs, int port_addr,
int dev_addr, int regnum, int value)
{
int timeout = 1000000;
out_be32(&phyregs->miimadd, (port_addr << 8) | (regnum & 0x1f));
out_be32(&phyregs->miimcon, value);
/* Memory barrier */
mb();
while ((in_be32(&phyregs->miimind) & MIIMIND_BUSY) && timeout--)
;
}
int tsec_local_mdio_read(struct tsec_mii_mng __iomem *phyregs, int port_addr,
int dev_addr, int regnum)
{
int value;
int timeout = 1000000;
/* Put the address of the phy, and the register number into MIIMADD */
out_be32(&phyregs->miimadd, (port_addr << 8) | (regnum & 0x1f));
/* Clear the command register, and wait */
out_be32(&phyregs->miimcom, 0);
/* Memory barrier */
mb();
/* Initiate a read command, and wait */
out_be32(&phyregs->miimcom, MIIMCOM_READ_CYCLE);
/* Memory barrier */
mb();
/* Wait for the the indication that the read is done */
while ((in_be32(&phyregs->miimind) & (MIIMIND_NOTVALID | MIIMIND_BUSY))
&& timeout--)
;
/* Grab the value read from the PHY */
value = in_be32(&phyregs->miimstat);
return value;
}
#if defined(CONFIG_PHYLIB)
static int fsl_pq_mdio_reset(struct mii_dev *bus)
{
struct tsec_mii_mng __iomem *regs;
#ifndef CONFIG_DM_MDIO
regs = (struct tsec_mii_mng __iomem *)bus->priv;
#else
struct tsec_mdio_priv *priv;
if (!bus->priv)
return -EINVAL;
priv = dev_get_priv(bus->priv);
regs = priv->regs;
#endif
/* Reset MII (due to new addresses) */
out_be32(&regs->miimcfg, MIIMCFG_RESET_MGMT);
out_be32(&regs->miimcfg, MIIMCFG_INIT_VALUE);
while (in_be32(&regs->miimind) & MIIMIND_BUSY)
;
return 0;
}
#endif
int tsec_phy_read(struct mii_dev *bus, int addr, int dev_addr, int regnum)
{
struct tsec_mii_mng __iomem *phyregs;
#ifndef CONFIG_DM_MDIO
phyregs = (struct tsec_mii_mng __iomem *)bus->priv;
#else
struct tsec_mdio_priv *priv;
if (!bus->priv)
return -EINVAL;
priv = dev_get_priv(bus->priv);
phyregs = priv->regs;
#endif
return tsec_local_mdio_read(phyregs, addr, dev_addr, regnum);
}
int tsec_phy_write(struct mii_dev *bus, int addr, int dev_addr, int regnum,
u16 value)
{
struct tsec_mii_mng __iomem *phyregs;
#ifndef CONFIG_DM_MDIO
phyregs = (struct tsec_mii_mng __iomem *)bus->priv;
#else
struct tsec_mdio_priv *priv;
if (!bus->priv)
return -EINVAL;
priv = dev_get_priv(bus->priv);
phyregs = priv->regs;
#endif
tsec_local_mdio_write(phyregs, addr, dev_addr, regnum, value);
return 0;
}
#ifndef CONFIG_DM_MDIO
int fsl_pq_mdio_init(struct bd_info *bis, struct fsl_pq_mdio_info *info)
{
struct mii_dev *bus = mdio_alloc();
if (!bus) {
printf("Failed to allocate FSL MDIO bus\n");
return -1;
}
bus->read = tsec_phy_read;
bus->write = tsec_phy_write;
bus->reset = fsl_pq_mdio_reset;
strcpy(bus->name, info->name);
bus->priv = (void *)info->regs;
return mdio_register(bus);
}
#else /* CONFIG_DM_MDIO */
#if defined(CONFIG_PHYLIB)
static int tsec_mdio_read(struct udevice *dev, int addr, int devad, int reg)
{
struct mdio_perdev_priv *pdata = (dev) ? dev_get_uclass_priv(dev) :
NULL;
if (pdata && pdata->mii_bus)
return tsec_phy_read(pdata->mii_bus, addr, devad, reg);
return -1;
}
static int tsec_mdio_write(struct udevice *dev, int addr, int devad, int reg,
u16 val)
{
struct mdio_perdev_priv *pdata = (dev) ? dev_get_uclass_priv(dev) :
NULL;
if (pdata && pdata->mii_bus)
return tsec_phy_write(pdata->mii_bus, addr, devad, reg, val);
return -1;
}
static int tsec_mdio_reset(struct udevice *dev)
{
struct mdio_perdev_priv *pdata = (dev) ? dev_get_uclass_priv(dev) :
NULL;
if (pdata && pdata->mii_bus)
return fsl_pq_mdio_reset(pdata->mii_bus);
return -1;
}
static const struct mdio_ops tsec_mdio_ops = {
.read = tsec_mdio_read,
.write = tsec_mdio_write,
.reset = tsec_mdio_reset,
};
static struct fsl_pq_mdio_data etsec2_data = {
.mdio_regs_off = TSEC_MDIO_REGS_OFFSET,
};
static struct fsl_pq_mdio_data gianfar_data = {
.mdio_regs_off = 0x0,
};
static struct fsl_pq_mdio_data fman_data = {
.mdio_regs_off = 0x0,
};
static const struct udevice_id tsec_mdio_ids[] = {
{ .compatible = "fsl,gianfar-tbi", .data = (ulong)&gianfar_data },
{ .compatible = "fsl,gianfar-mdio", .data = (ulong)&gianfar_data },
{ .compatible = "fsl,etsec2-tbi", .data = (ulong)&etsec2_data },
{ .compatible = "fsl,etsec2-mdio", .data = (ulong)&etsec2_data },
{ .compatible = "fsl,fman-mdio", .data = (ulong)&fman_data },
{}
};
static int tsec_mdio_probe(struct udevice *dev)
{
struct fsl_pq_mdio_data *data;
struct tsec_mdio_priv *priv = (dev) ? dev_get_priv(dev) : NULL;
struct mdio_perdev_priv *pdata = (dev) ? dev_get_uclass_priv(dev) :
NULL;
if (!dev) {
printf("%s dev = NULL\n", __func__);
return -1;
}
if (!priv) {
printf("dev_get_priv(dev %p) = NULL\n", dev);
return -1;
}
data = (struct fsl_pq_mdio_data *)dev_get_driver_data(dev);
priv->regs = dev_remap_addr(dev) + data->mdio_regs_off;
debug("%s priv %p @ regs %p, pdata %p\n", __func__,
priv, priv->regs, pdata);
return 0;
}
static int tsec_mdio_remove(struct udevice *dev)
{
return 0;
}
U_BOOT_DRIVER(tsec_mdio) = {
.name = "tsec_mdio",
.id = UCLASS_MDIO,
.of_match = tsec_mdio_ids,
.probe = tsec_mdio_probe,
.remove = tsec_mdio_remove,
.ops = &tsec_mdio_ops,
.priv_auto = sizeof(struct tsec_mdio_priv),
.plat_auto = sizeof(struct mdio_perdev_priv),
};
#endif /* CONFIG_PHYLIB */
#endif /* CONFIG_DM_MDIO */