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authorSrinivas Kandagatla <srinivas.kandagatla@st.com>2014-01-16 10:52:52 +0000
committerDavid S. Miller <davem@davemloft.net>2014-01-16 15:23:43 -0800
commitdb88f10ad6a84c5bcb71bf51f0988a4bb1733bea (patch)
tree5ceafefe0ad3c1649bc62ede476a71819e41d2d1 /drivers/net/ethernet/stmicro
parent33a23e223749c45ff8099ff9baa235301a3ad07f (diff)
net: stmmac: restore pinstate in pm resume.
This patch adds code to restore default pinstate of the pins when it comes back from low power state. Without this patch the state of the pins would be unknown and the driver would not work. This patch also adds code to put the pins in to sleep state when the driver enters low power state. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro')
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/stmmac_main.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index c1298a0aef06..df7d8d618233 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -43,6 +43,7 @@
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/prefetch.h>
+#include <linux/pinctrl/consumer.h>
#ifdef CONFIG_STMMAC_DEBUG_FS
#include <linux/debugfs.h>
#include <linux/seq_file.h>
@@ -2864,6 +2865,7 @@ int stmmac_suspend(struct net_device *ndev)
priv->hw->mac->pmt(priv->ioaddr, priv->wolopts);
else {
stmmac_set_mac(priv->ioaddr, false);
+ pinctrl_pm_select_sleep_state(priv->device);
/* Disable clock in case of PWM is off */
clk_disable_unprepare(priv->stmmac_clk);
}
@@ -2890,6 +2892,7 @@ int stmmac_resume(struct net_device *ndev)
if (device_may_wakeup(priv->device)) {
priv->hw->mac->pmt(priv->ioaddr, 0);
} else {
+ pinctrl_pm_select_default_state(priv->device);
/* enable the clk prevously disabled */
clk_prepare_enable(priv->stmmac_clk);
/* reset the phy so that it's ready */