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net: dsa: lan9303: Add adjust_link() method

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Make the driver react to device tree "fixed-link" declaration on CPU port.

- turn off autonegotiation
- force speed 10 or 100 mb/s
- force duplex mode

Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Egil Hjelmeland 2017-09-19 10:09:24 +02:00 committed by David S. Miller
parent 00ba4cb36d
commit 4d6a78b477
1 changed files with 40 additions and 0 deletions
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40
drivers/net/dsa/lan9303-core.c
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@ -17,6 +17,7 @@
#include <linux/regmap.h>
#include <linux/mutex.h>
#include <linux/mii.h>
#include <linux/phy.h>
#include "lan9303.h"
@ -57,6 +58,7 @@
#define LAN9303_SWITCH_CSR_CMD_LANES (BIT(19) | BIT(18) | BIT(17) | BIT(16))
#define LAN9303_VIRT_PHY_BASE 0x70
#define LAN9303_VIRT_SPECIAL_CTRL 0x77
#define LAN9303_VIRT_SPECIAL_TURBO BIT(10) /*Turbo MII Enable*/
/*13.4 Switch Fabric Control and Status Registers
* Accessed indirectly via SWITCH_CSR_CMD, SWITCH_CSR_DATA.
@ -760,6 +762,43 @@ static int lan9303_phy_write(struct dsa_switch *ds, int phy, int regnum,
return chip->ops->phy_write(chip, phy, regnum, val);
}
static void lan9303_adjust_link(struct dsa_switch *ds, int port,
struct phy_device *phydev)
{
struct lan9303 *chip = ds->priv;
int ctl, res;
if (!phy_is_pseudo_fixed_link(phydev))
return;
ctl = lan9303_phy_read(ds, port, MII_BMCR);
ctl &= ~BMCR_ANENABLE;
if (phydev->speed == SPEED_100)
ctl |= BMCR_SPEED100;
else if (phydev->speed == SPEED_10)
ctl &= ~BMCR_SPEED100;
else
dev_err(ds->dev, "unsupported speed: %d\n", phydev->speed);
if (phydev->duplex == DUPLEX_FULL)
ctl |= BMCR_FULLDPLX;
else
ctl &= ~BMCR_FULLDPLX;
res = lan9303_phy_write(ds, port, MII_BMCR, ctl);
if (port == chip->phy_addr_sel_strap) {
/* Virtual Phy: Remove Turbo 200Mbit mode */
lan9303_read(chip->regmap, LAN9303_VIRT_SPECIAL_CTRL, &ctl);
ctl &= ~LAN9303_VIRT_SPECIAL_TURBO;
res = regmap_write(chip->regmap,
LAN9303_VIRT_SPECIAL_CTRL, ctl);
}
}
static int lan9303_port_enable(struct dsa_switch *ds, int port,
struct phy_device *phy)
{
@ -803,6 +842,7 @@ static const struct dsa_switch_ops lan9303_switch_ops = {
.get_strings = lan9303_get_strings,
.phy_read = lan9303_phy_read,
.phy_write = lan9303_phy_write,
.adjust_link = lan9303_adjust_link,
.get_ethtool_stats = lan9303_get_ethtool_stats,
.get_sset_count = lan9303_get_sset_count,
.port_enable = lan9303_port_enable,