Commit f17e70d2 authored by Antoine Tenart's avatar Antoine Tenart Committed by David S. Miller
Browse files

net: mvpp2: only update the XLG configuration when needed 



This patch improves the XLG configuration function, to only update the
XLG configuration register when a change is needed. This helps not
writing over and over the same XLG configuration each time phylink
request the MAC to be configured. This mimics the GMAC configuration
function.

Signed-off-by: default avatarAntoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6b10bfc5

drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c

+8 −5
Original line number Diff line number Diff line
@@ -4505,10 +4505,11 @@ static void mvpp2_mac_an_restart(struct net_device *dev) 
static void mvpp2_xlg_config(struct mvpp2_port *port, unsigned int mode,

			     const struct phylink_link_state *state)

{

	u32 ctrl0, ctrl4;

	u32 old_ctrl0, ctrl0;

	u32 old_ctrl4, ctrl4;



	ctrl0 = readl(port->base + MVPP22_XLG_CTRL0_REG);

	ctrl4 = readl(port->base + MVPP22_XLG_CTRL4_REG);

	old_ctrl0 = ctrl0 = readl(port->base + MVPP22_XLG_CTRL0_REG);

	old_ctrl4 = ctrl4 = readl(port->base + MVPP22_XLG_CTRL4_REG);



	if (state->pause & MLO_PAUSE_TX)

		ctrl0 |= MVPP22_XLG_CTRL0_TX_FLOW_CTRL_EN;
@@ -4524,7 +4525,9 @@ static void mvpp2_xlg_config(struct mvpp2_port *port, unsigned int mode, 
	ctrl4 |= MVPP22_XLG_CTRL4_FWD_FC | MVPP22_XLG_CTRL4_FWD_PFC |

		 MVPP22_XLG_CTRL4_EN_IDLE_CHECK;



	if (old_ctrl0 != ctrl0)

		writel(ctrl0, port->base + MVPP22_XLG_CTRL0_REG);

	if (old_ctrl4 != ctrl4)

		writel(ctrl4, port->base + MVPP22_XLG_CTRL4_REG);

}

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