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net: phy: tja11xx: add SQI support 

This patch implements reading of the Signal Quality Index for better
cable/link troubleshooting.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Oleksij Rempel 2020-05-20 08:29:15 +02:00 committed by David S. Miller
parent 8066021915
commit 68ff5e1475
1 changed files with 26 additions and 0 deletions
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26
drivers/net/phy/nxp-tja11xx.c
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@ -53,6 +53,8 @@
#define MII_COMMSTAT 23
#define MII_COMMSTAT_LINK_UP BIT(15)
#define MII_COMMSTAT_SQI_STATE GENMASK(7, 5)
#define MII_COMMSTAT_SQI_MAX 7
#define MII_GENSTAT 24
#define MII_GENSTAT_PLL_LOCKED BIT(14)
@ -329,6 +331,22 @@ static int tja11xx_read_status(struct phy_device *phydev)
return 0;
}
static int tja11xx_get_sqi(struct phy_device *phydev)
{
int ret;
ret = phy_read(phydev, MII_COMMSTAT);
if (ret < 0)
return ret;
return FIELD_GET(MII_COMMSTAT_SQI_STATE, ret);
}
static int tja11xx_get_sqi_max(struct phy_device *phydev)
{
return MII_COMMSTAT_SQI_MAX;
}
static int tja11xx_get_sset_count(struct phy_device *phydev)
{
return ARRAY_SIZE(tja11xx_hw_stats);
@ -683,6 +701,8 @@ static struct phy_driver tja11xx_driver[] = {
.config_aneg = tja11xx_config_aneg,
.config_init = tja11xx_config_init,
.read_status = tja11xx_read_status,
.get_sqi = tja11xx_get_sqi,
.get_sqi_max = tja11xx_get_sqi_max,
.suspend = genphy_suspend,
.resume = genphy_resume,
.set_loopback = genphy_loopback,
@ -699,6 +719,8 @@ static struct phy_driver tja11xx_driver[] = {
.config_aneg = tja11xx_config_aneg,
.config_init = tja11xx_config_init,
.read_status = tja11xx_read_status,
.get_sqi = tja11xx_get_sqi,
.get_sqi_max = tja11xx_get_sqi_max,
.suspend = genphy_suspend,
.resume = genphy_resume,
.set_loopback = genphy_loopback,
@ -715,6 +737,8 @@ static struct phy_driver tja11xx_driver[] = {
.config_aneg = tja11xx_config_aneg,
.config_init = tja11xx_config_init,
.read_status = tja11xx_read_status,
.get_sqi = tja11xx_get_sqi,
.get_sqi_max = tja11xx_get_sqi_max,
.match_phy_device = tja1102_p0_match_phy_device,
.suspend = genphy_suspend,
.resume = genphy_resume,
@ -736,6 +760,8 @@ static struct phy_driver tja11xx_driver[] = {
.config_aneg = tja11xx_config_aneg,
.config_init = tja11xx_config_init,
.read_status = tja11xx_read_status,
.get_sqi = tja11xx_get_sqi,
.get_sqi_max = tja11xx_get_sqi_max,
.match_phy_device = tja1102_p1_match_phy_device,
.suspend = genphy_suspend,
.resume = genphy_resume,