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From 9cfb2d426c38272f245e9e6f62b3552d1ed5852b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ren=C3=A9=20van=20Dorst?= <opensource@vdorst.com>
Date: Tue, 21 Apr 2020 00:18:08 +0200
Subject: [PATCH] net: dsa: mt7530: Support EEE features
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: René van Dorst <opensource@vdorst.com>
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -1407,9 +1407,13 @@ static void mt7530_phylink_mac_config(st
switch (state->speed) {
case SPEED_1000:
mcr_new |= PMCR_FORCE_SPEED_1000;
+ if (priv->eee_enable & BIT(port))
+ mcr_new |= PMCR_FORCE_EEE1G;
break;
case SPEED_100:
mcr_new |= PMCR_FORCE_SPEED_100;
+ if (priv->eee_enable & BIT(port))
+ mcr_new |= PMCR_FORCE_EEE100;
break;
}
if (state->duplex == DUPLEX_FULL) {
@@ -1545,6 +1549,54 @@ mt7530_phylink_mac_link_state(struct dsa
return 1;
}
+static int mt7530_get_mac_eee(struct dsa_switch *ds, int port,
+ struct ethtool_eee *e)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 eeecr, pmsr;
+
+ e->eee_enabled = !!(priv->eee_enable & BIT(port));
+
+ if (e->eee_enabled) {
+ eeecr = mt7530_read(priv, MT7530_PMEEECR_P(port));
+ e->tx_lpi_enabled = !(eeecr & LPI_MODE_EN);
+ e->tx_lpi_timer = (eeecr >> 4) & 0xFFF;
+ pmsr = mt7530_read(priv, MT7530_PMSR_P(port));
+ e->eee_active = e->eee_enabled && !!(pmsr & PMSR_EEE1G);
+ } else {
+ e->tx_lpi_enabled = 0;
+ e->tx_lpi_timer = 0;
+ e->eee_active = 0;
+ }
+
+ return 0;
+}
+
+static int mt7530_set_mac_eee(struct dsa_switch *ds, int port,
+ struct ethtool_eee *e)
+{
+ struct mt7530_priv *priv = ds->priv;
+ u32 eeecr;
+
+ if (e->tx_lpi_enabled && e->tx_lpi_timer > 0xFFF)
+ return -EINVAL;
+
+ if (e->eee_enabled) {
+ priv->eee_enable |= BIT(port);
+ //MT7530_PMEEECR_P
+ eeecr = mt7530_read(priv, MT7530_PMEEECR_P(port));
+ eeecr &= 0xFFFF0000;
+ if (!e->tx_lpi_enabled)
+ eeecr |= LPI_MODE_EN;
+ eeecr |= LPI_THRESH(e->tx_lpi_timer);
+ mt7530_write(priv, MT7530_PMEEECR_P(port), eeecr);
+ } else {
+ priv->eee_enable &= ~(BIT(port));
+ }
+
+ return 0;
+}
+
static const struct dsa_switch_ops mt7530_switch_ops = {
.get_tag_protocol = mtk_get_tag_protocol,
.setup = mt7530_setup,
@@ -1572,6 +1624,8 @@ static const struct dsa_switch_ops mt753
.phylink_mac_config = mt7530_phylink_mac_config,
.phylink_mac_link_down = mt7530_phylink_mac_link_down,
.phylink_mac_link_up = mt7530_phylink_mac_link_up,
+ .get_mac_eee = mt7530_get_mac_eee,
+ .set_mac_eee = mt7530_set_mac_eee,
};
static const struct of_device_id mt7530_of_match[] = {
--- a/drivers/net/dsa/mt7530.h
+++ b/drivers/net/dsa/mt7530.h
@@ -212,6 +212,8 @@ enum mt7530_vlan_port_attr {
#define PMCR_RX_EN BIT(13)
#define PMCR_BACKOFF_EN BIT(9)
#define PMCR_BACKPR_EN BIT(8)
+#define PMCR_FORCE_EEE1G BIT(7)
+#define PMCR_FORCE_EEE100 BIT(6)
#define PMCR_TX_FC_EN BIT(5)
#define PMCR_RX_FC_EN BIT(4)
#define PMCR_FORCE_SPEED_1000 BIT(3)
@@ -233,6 +235,12 @@ enum mt7530_vlan_port_attr {
#define PMSR_DPX BIT(1)
#define PMSR_LINK BIT(0)
+#define MT7530_PMEEECR_P(x) (0x3004 + (x) * 0x100)
+#define WAKEUP_TIME_1000(x) ((x & 0xFF) << 24)
+#define WAKEUP_TIME_100(x) ((x & 0xFF) << 16)
+#define LPI_THRESH(x) ((x & 0xFFF) << 4)
+#define LPI_MODE_EN BIT(0)
+
/* Register for MIB */
#define MT7530_PORT_MIB_COUNTER(x) (0x4000 + (x) * 0x100)
#define MT7530_MIB_CCR 0x4fe0
@@ -471,6 +479,7 @@ struct mt7530_priv {
unsigned int p5_intf_sel;
u8 mirror_rx;
u8 mirror_tx;
+ u8 eee_enable;
struct mt7530_port ports[MT7530_NUM_PORTS];
/* protect among processes for registers access*/
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