aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net
diff options
context:
space:
mode:
authorAntoine Tenart <antoine.tenart@bootlin.com>2019-03-01 11:52:12 +0100
committerDavid S. Miller <davem@davemloft.net>2019-03-01 23:23:34 -0800
commitf17e70d2586a81d69d7b011e81af0456fe65d658 (patch)
tree6e07acc5cfc9a7c2ebd4cd5fa0132de9883a9372 /drivers/net
parentnet: mvpp2: always disable both MACs when disabling a port (diff)
downloadlinux-dev-f17e70d2586a81d69d7b011e81af0456fe65d658.tar.xz
linux-dev-f17e70d2586a81d69d7b011e81af0456fe65d658.zip
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: Antoine Tenart <antoine.tenart@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index e9cbbe871a1a..b1add5c6b75c 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -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;
@@ -4524,8 +4525,10 @@ 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;
- writel(ctrl0, port->base + MVPP22_XLG_CTRL0_REG);
- writel(ctrl4, port->base + MVPP22_XLG_CTRL4_REG);
+ if (old_ctrl0 != ctrl0)
+ writel(ctrl0, port->base + MVPP22_XLG_CTRL0_REG);
+ if (old_ctrl4 != ctrl4)
+ writel(ctrl4, port->base + MVPP22_XLG_CTRL4_REG);
}
static void mvpp2_gmac_config(struct mvpp2_port *port, unsigned int mode,