Commit 02e9ce07 authored by Biao Huang's avatar Biao Huang Committed by David S. Miller
Browse files

net: ethernet: mtk-star-emac: enable half duplex hardware support 



Current driver doesn't support half duplex correctly.
This patch enable half duplex capability in hardware.

Signed-off-by: default avatarBiao Huang <biao.huang@mediatek.com>
Signed-off-by: default avatarYinghua Pan <ot_yinghua.pan@mediatek.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0a8bd81f

drivers/net/ethernet/mediatek/mtk_star_emac.c

+12 −18
Original line number Diff line number Diff line
@@ -883,32 +883,26 @@ static void mtk_star_phy_config(struct mtk_star_priv *priv) 
	val <<= MTK_STAR_OFF_PHY_CTRL1_FORCE_SPD;



	val |= MTK_STAR_BIT_PHY_CTRL1_AN_EN;

	if (priv->pause) {

		val |= MTK_STAR_BIT_PHY_CTRL1_FORCE_FC_RX;

		val |= MTK_STAR_BIT_PHY_CTRL1_FORCE_FC_TX;

	/* Only full-duplex supported for now. */

		val |= MTK_STAR_BIT_PHY_CTRL1_FORCE_DPX;



	} else {

		val &= ~MTK_STAR_BIT_PHY_CTRL1_FORCE_FC_RX;

		val &= ~MTK_STAR_BIT_PHY_CTRL1_FORCE_FC_TX;

		val &= ~MTK_STAR_BIT_PHY_CTRL1_FORCE_DPX;

	}

	regmap_write(priv->regs, MTK_STAR_REG_PHY_CTRL1, val);



	if (priv->pause) {

	val = MTK_STAR_VAL_FC_CFG_SEND_PAUSE_TH_2K;

	val <<= MTK_STAR_OFF_FC_CFG_SEND_PAUSE_TH;

	val |= MTK_STAR_BIT_FC_CFG_UC_PAUSE_DIR;

	} else {

		val = 0;

	}



	regmap_update_bits(priv->regs, MTK_STAR_REG_FC_CFG,

			   MTK_STAR_MSK_FC_CFG_SEND_PAUSE_TH |

			   MTK_STAR_BIT_FC_CFG_UC_PAUSE_DIR, val);



	if (priv->pause) {

	val = MTK_STAR_VAL_EXT_CFG_SND_PAUSE_RLS_1K;

	val <<= MTK_STAR_OFF_EXT_CFG_SND_PAUSE_RLS;

	} else {

		val = 0;

	}



	regmap_update_bits(priv->regs, MTK_STAR_REG_EXT_CFG,

			   MTK_STAR_MSK_EXT_CFG_SND_PAUSE_RLS, val);

}