admin/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-12-07 20:06:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

net: dsa: lantiq_gswip: support Energy Efficient Ethernet

Browse Source 
Introduce support for Energy Efficient Ethernet (EEE) on hardware
version 2.2 or later.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/753e45acb25e185689ca1afd8a9bd0c199d1c15b.1762170107.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Daniel Golle
2025-11-03 12:19:00 +00:00
committed by Jakub Kicinski
parent a7d4b05f9d
commit 9ec1fc0bf2
2 changed files with 54 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/net/dsa/lantiq/lantiq_gswip.h
View File

@@ -2,6 +2,7 @@
#ifndef __LANTIQ_GSWIP_H
#define __LANTIQ_GSWIP_H
#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/mutex.h>
#include <linux/phylink.h>
@@ -193,6 +194,12 @@
#define GSWIP_MAC_CTRL_2p(p) (0x905 + ((p) * 0xC))
#define GSWIP_MAC_CTRL_2_LCHKL BIT(2) /* Frame Length Check Long Enable */
#define GSWIP_MAC_CTRL_2_MLEN BIT(3) /* Maximum Untagged Frame Lnegth */
#define GSWIP_MAC_CTRL_4p(p) (0x907 + ((p) * 0xC))
#define GSWIP_MAC_CTRL_4_LPIEN BIT(7) /* LPI Mode Enable */
#define GSWIP_MAC_CTRL_4_GWAIT_MASK GENMASK(14, 8) /* LPI Wait Time 1G */
#define GSWIP_MAC_CTRL_4_GWAIT(t) u16_encode_bits((t), GSWIP_MAC_CTRL_4_GWAIT_MASK)
#define GSWIP_MAC_CTRL_4_WAIT_MASK GENMASK(6, 0) /* LPI Wait Time 100M */
#define GSWIP_MAC_CTRL_4_WAIT(t) u16_encode_bits((t), GSWIP_MAC_CTRL_4_WAIT_MASK)
/* Ethernet Switch Fetch DMA Port Control Register */
#define GSWIP_FDMA_PCTRLp(p) (0xA80 + ((p) * 0x6))

47
drivers/net/dsa/lantiq/lantiq_gswip_common.c
View File

@@ -1537,6 +1537,49 @@ static int gswip_get_sset_count(struct dsa_switch *ds, int port, int sset)
return ARRAY_SIZE(gswip_rmon_cnt);
}
static int gswip_set_mac_eee(struct dsa_switch *ds, int port,
struct ethtool_keee *e)
{
if (e->tx_lpi_timer > 0x7f)
return -EINVAL;
return 0;
}
static void gswip_phylink_mac_disable_tx_lpi(struct phylink_config *config)
{
struct dsa_port *dp = dsa_phylink_to_port(config);
struct gswip_priv *priv = dp->ds->priv;
regmap_clear_bits(priv->gswip, GSWIP_MAC_CTRL_4p(dp->index),
GSWIP_MAC_CTRL_4_LPIEN);
}
static int gswip_phylink_mac_enable_tx_lpi(struct phylink_config *config,
u32 timer, bool tx_clock_stop)
{
struct dsa_port *dp = dsa_phylink_to_port(config);
struct gswip_priv *priv = dp->ds->priv;
return regmap_update_bits(priv->gswip, GSWIP_MAC_CTRL_4p(dp->index),
GSWIP_MAC_CTRL_4_LPIEN |
GSWIP_MAC_CTRL_4_GWAIT_MASK |
GSWIP_MAC_CTRL_4_WAIT_MASK,
GSWIP_MAC_CTRL_4_LPIEN |
GSWIP_MAC_CTRL_4_GWAIT(timer) |
GSWIP_MAC_CTRL_4_WAIT(timer));
}
static bool gswip_support_eee(struct dsa_switch *ds, int port)
{
struct gswip_priv *priv = ds->priv;
if (GSWIP_VERSION_GE(priv, GSWIP_VERSION_2_2))
return true;
return false;
}
static struct phylink_pcs *gswip_phylink_mac_select_pcs(struct phylink_config *config,
phy_interface_t interface)
{
@@ -1553,6 +1596,8 @@ static const struct phylink_mac_ops gswip_phylink_mac_ops = {
.mac_config = gswip_phylink_mac_config,
.mac_link_down = gswip_phylink_mac_link_down,
.mac_link_up = gswip_phylink_mac_link_up,
.mac_disable_tx_lpi = gswip_phylink_mac_disable_tx_lpi,
.mac_enable_tx_lpi = gswip_phylink_mac_enable_tx_lpi,
.mac_select_pcs = gswip_phylink_mac_select_pcs,
};
@@ -1580,6 +1625,8 @@ static const struct dsa_switch_ops gswip_switch_ops = {
.get_strings = gswip_get_strings,
.get_ethtool_stats = gswip_get_ethtool_stats,
.get_sset_count = gswip_get_sset_count,
.set_mac_eee = gswip_set_mac_eee,
.support_eee = gswip_support_eee,
};
void gswip_disable_switch(struct gswip_priv *priv)