74 lines
2.7 KiB
Diff
74 lines
2.7 KiB
Diff
From 89f7f2cfdd7ade55d5230501c21271690790ceda Mon Sep 17 00:00:00 2001
|
|
From: Srinivas Kandagatla <srinivas.kandagatla@st.com>
|
|
Date: Thu, 16 Jan 2014 10:53:00 +0000
|
|
Subject: [PATCH] net: stmmac: notify the PM core of a wakeup event.
|
|
|
|
In PM_SUSPEND_FREEZE and WOL(Wakeup On Lan) case, when the driver gets a
|
|
wakeup event, either the driver or platform specific PM code should notify
|
|
the pm core about it, so that the system can wakeup from low power.
|
|
|
|
In cases where there is no involvement of platform specific PM, it
|
|
becomes driver responsibility to notify the PM core to wakeup the
|
|
system.
|
|
|
|
Without this WOL with PM_SUSPEND_FREEZE does not work on STi based SOCs.
|
|
|
|
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>
|
|
---
|
|
drivers/net/ethernet/stmicro/stmmac/stmmac.h | 1 +
|
|
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 9 +++++++--
|
|
2 files changed, 8 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
|
|
index 027f1dd..73709e9 100644
|
|
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
|
|
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
|
|
@@ -105,6 +105,7 @@ struct stmmac_priv {
|
|
unsigned int default_addend;
|
|
u32 adv_ts;
|
|
int use_riwt;
|
|
+ int irq_wake;
|
|
spinlock_t ptp_lock;
|
|
};
|
|
|
|
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
|
|
index df7d8d6..cddcf76 100644
|
|
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
|
|
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
|
|
@@ -2320,6 +2320,9 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id)
|
|
struct net_device *dev = (struct net_device *)dev_id;
|
|
struct stmmac_priv *priv = netdev_priv(dev);
|
|
|
|
+ if (priv->irq_wake)
|
|
+ pm_wakeup_event(priv->device, 0);
|
|
+
|
|
if (unlikely(!dev)) {
|
|
pr_err("%s: invalid dev pointer\n", __func__);
|
|
return IRQ_NONE;
|
|
@@ -2861,9 +2864,10 @@ int stmmac_suspend(struct net_device *ndev)
|
|
stmmac_clear_descriptors(priv);
|
|
|
|
/* Enable Power down mode by programming the PMT regs */
|
|
- if (device_may_wakeup(priv->device))
|
|
+ if (device_may_wakeup(priv->device)) {
|
|
priv->hw->mac->pmt(priv->ioaddr, priv->wolopts);
|
|
- else {
|
|
+ priv->irq_wake = 1;
|
|
+ } else {
|
|
stmmac_set_mac(priv->ioaddr, false);
|
|
pinctrl_pm_select_sleep_state(priv->device);
|
|
/* Disable clock in case of PWM is off */
|
|
@@ -2891,6 +2895,7 @@ int stmmac_resume(struct net_device *ndev)
|
|
*/
|
|
if (device_may_wakeup(priv->device)) {
|
|
priv->hw->mac->pmt(priv->ioaddr, 0);
|
|
+ priv->irq_wake = 0;
|
|
} else {
|
|
pinctrl_pm_select_default_state(priv->device);
|
|
/* enable the clk prevously disabled */
|
|
--
|
|
1.8.5.5
|
|
|