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net: stmmac: Low power management optimization

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Do not check for oldlink, always check for phydev link
when we suspend and resume the device.

Change-Id: I9cad2a1ecc3aea62b1b005ba09b3e7f21a07349f
Acked-by: Nagarjuna Chaganti <nchagant@qti.qualcomm.com>
Signed-off-by: Suraj Jaiswal <jsuraj@codeaurora.org>
This commit is contained in:
Suraj Jaiswal 2021-03-17 22:48:09 +05:30 • committed by Gerrit - the friendly Code Review server
commit 336fdc586c
2 changed files with 19 additions and 20 deletions
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42
drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
View file

@ -911,33 +911,31 @@ static void qcom_ethqos_phy_suspend_clks(struct qcom_ethqos *ethqos)
ETHQOSINFO("Exit\n");
}
static bool qcom_ethqos_is_phy_link_up(struct qcom_ethqos *ethqos,
struct net_device *ndev)
inline void *qcom_ethqos_get_priv(struct qcom_ethqos *ethqos)
{
if (!ethqos) {
ETHQOSINFO("ethqos addr is NULL");
return false;
}
struct platform_device *pdev = ethqos->pdev;
struct net_device *dev = platform_get_drvdata(pdev);
struct stmmac_priv *priv = netdev_priv(dev);
if (!ndev) {
ETHQOSINFO("dev addr is NULL");
return false;
}
/* PHY driver initializes phydev->link=1.
* So, phydev->link is 1 even on booup with no PHY connected.
* phydev->link is valid only after adjust_link is called once.
* Use (pdata->oldlink != -1) to indicate phy link is not up
*/
return (ethqos->oldlink != -1 && ndev->phydev && ndev->phydev->link);
return priv;
}
static void qcom_ethqos_phy_resume_clks(struct qcom_ethqos *ethqos,
struct net_device *ndev)
inline bool qcom_ethqos_is_phy_link_up(struct qcom_ethqos *ethqos)
{
/* PHY driver initializes phydev->link=1.
* So, phydev->link is 1 even on bootup with no PHY connected.
* phydev->link is valid only after adjust_link is called once.
*/
struct stmmac_priv *priv = qcom_ethqos_get_priv(ethqos);
return (priv->dev->phydev && priv->dev->phydev->link);
}
static void qcom_ethqos_phy_resume_clks(struct qcom_ethqos *ethqos)
{
ETHQOSINFO("Enter\n");
if (qcom_ethqos_is_phy_link_up(ethqos, ndev))
if (qcom_ethqos_is_phy_link_up(ethqos))
ethqos_update_rgmii_clk_and_bus_cfg(ethqos, ethqos->speed);
else
ethqos_update_rgmii_clk_and_bus_cfg(ethqos, SPEED_10);
@ -1022,7 +1020,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
}
ethqos->pdev = pdev;
ethqos->oldlink = -1;
ethqos_init_reqgulators(ethqos);
ethqos_init_gpio(ethqos);
@ -1202,7 +1200,7 @@ static int qcom_ethqos_resume(struct device *dev)
return -EINVAL;
}
qcom_ethqos_phy_resume_clks(ethqos, ndev);
qcom_ethqos_phy_resume_clks(ethqos);
ret = stmmac_resume(dev);

5
drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.h
View file

@ -146,7 +146,6 @@ struct qcom_ethqos {
unsigned long avb_class_a_intr_cnt;
unsigned long avb_class_b_intr_cnt;
int oldlink;
/* saving state for Wake-on-LAN */
int wolopts;
/* state of enabled wol options in PHY*/
@ -157,7 +156,6 @@ struct qcom_ethqos {
int clks_suspended;
/* Structure which holds done and wait members */
struct completion clk_enable_done;
};
struct pps_cfg {
@ -193,6 +191,9 @@ int create_pps_interrupt_device_node(dev_t *pps_dev_t,
struct cdev **pps_cdev,
struct class **pps_class,
char *pps_dev_node_name);
bool qcom_ethqos_is_phy_link_up(struct qcom_ethqos *ethqos);
void *qcom_ethqos_get_priv(struct qcom_ethqos *ethqos);
int ppsout_config(struct stmmac_priv *priv, struct ifr_data_struct *req);
u16 dwmac_qcom_select_queue(struct net_device *dev,