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net: phy: adin1100: Add SQI support 

Determine the SQI from MSE using a predefined table
for the 10BASE-T1L.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexandru Tachici 2022-04-29 18:34:36 +03:00 committed by David S. Miller
parent 7eaf913299
commit 48f20f9021
1 changed files with 52 additions and 0 deletions
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52
drivers/net/phy/adin1100.c
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@ -33,6 +33,26 @@
#define ADIN_CRSM_SFT_PD_RDY BIT(1)
#define ADIN_CRSM_SYS_RDY BIT(0)
#define ADIN_MSE_VAL 0x830B
#define ADIN_SQI_MAX 7
struct adin_mse_sqi_range {
u16 start;
u16 end;
};
static const struct adin_mse_sqi_range adin_mse_sqi_map[] = {
{ 0x0A74, 0xFFFF },
{ 0x084E, 0x0A74 },
{ 0x0698, 0x084E },
{ 0x053D, 0x0698 },
{ 0x0429, 0x053D },
{ 0x034E, 0x0429 },
{ 0x02A0, 0x034E },
{ 0x0000, 0x02A0 },
};
/**
* struct adin_priv - ADIN PHY driver private data
* @tx_level_2v4_able: set if the PHY supports 2.4V TX levels (10BASE-T1L)
@ -199,6 +219,36 @@ static int adin_get_features(struct phy_device *phydev)
return genphy_c45_pma_read_abilities(phydev);
}
static int adin_get_sqi(struct phy_device *phydev)
{
u16 mse_val;
int sqi;
int ret;
ret = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_STAT1);
if (ret < 0)
return ret;
else if (!(ret & MDIO_STAT1_LSTATUS))
return 0;
ret = phy_read_mmd(phydev, MDIO_STAT1, ADIN_MSE_VAL);
if (ret < 0)
return ret;
mse_val = 0xFFFF & ret;
for (sqi = 0; sqi < ARRAY_SIZE(adin_mse_sqi_map); sqi++) {
if (mse_val >= adin_mse_sqi_map[sqi].start && mse_val <= adin_mse_sqi_map[sqi].end)
return sqi;
}
return -EINVAL;
}
static int adin_get_sqi_max(struct phy_device *phydev)
{
return ADIN_SQI_MAX;
}
static int adin_probe(struct phy_device *phydev)
{
struct device *dev = &phydev->mdio.dev;
@ -225,6 +275,8 @@ static struct phy_driver adin_driver[] = {
.set_loopback = adin_set_loopback,
.suspend = adin_suspend,
.resume = adin_resume,
.get_sqi = adin_get_sqi,
.get_sqi_max = adin_get_sqi_max,
},
};