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net: phy: smsc: prepare for making edpd wait period configurable 

Add a member edpd_max_wait_ms to the private data structure in preparation
of making the wait period configurable by supporting the edpd phy tunable.

v2:
- rename constant to EDPD_MAX_WAIT_DFLT_MS

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiner Kallweit 2023-04-02 17:14:35 +02:00 committed by David S. Miller
parent a620511080
commit 1ce658693b
1 changed files with 11 additions and 3 deletions
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14
drivers/net/phy/smsc.c
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@ -33,6 +33,8 @@
#define SPECIAL_CTRL_STS_AMDIX_ENABLE_ 0x4000
#define SPECIAL_CTRL_STS_AMDIX_STATE_ 0x2000
#define EDPD_MAX_WAIT_DFLT_MS 640
struct smsc_hw_stat {
const char *string;
u8 reg;
@ -46,6 +48,7 @@ static struct smsc_hw_stat smsc_hw_stats[] = {
struct smsc_phy_priv {
unsigned int edpd_enable:1;
unsigned int edpd_mode_set_by_user:1;
unsigned int edpd_max_wait_ms;
};
static int smsc_phy_ack_interrupt(struct phy_device *phydev)
@ -213,9 +216,13 @@ int lan87xx_read_status(struct phy_device *phydev)
if (err)
return err;
if (!phydev->link && priv && priv->edpd_enable) {
if (!phydev->link && priv && priv->edpd_enable &&
priv->edpd_max_wait_ms) {
unsigned int max_wait = priv->edpd_max_wait_ms * 1000;
int rc;
/* Disable EDPD to wake up PHY */
int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
if (rc < 0)
return rc;
@ -229,7 +236,7 @@ int lan87xx_read_status(struct phy_device *phydev)
*/
read_poll_timeout(phy_read, rc,
rc & MII_LAN83C185_ENERGYON || rc < 0,
10000, 640000, true, phydev,
10000, max_wait, true, phydev,
MII_LAN83C185_CTRL_STATUS);
if (rc < 0)
return rc;
@ -299,6 +306,7 @@ int smsc_phy_probe(struct phy_device *phydev)
return -ENOMEM;
priv->edpd_enable = true;
priv->edpd_max_wait_ms = EDPD_MAX_WAIT_DFLT_MS;
if (device_property_present(dev, "smsc,disable-energy-detect"))
priv->edpd_enable = false;