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authorMichael Walle <michael@walle.cc>2021-02-11 10:47:50 +0300
committerDavid S. Miller <davem@davemloft.net>2021-02-12 00:53:26 +0300
commit32ab60e5392066e5c5f71a93e37ea36ab726a526 (patch)
tree2ec3fb2666687bb4e029df31fa8fe32884b54cc9 /drivers/net/phy/icplus.c
parenta0750d42e95192fa8d57796f35ca7189bd231bb4 (diff)
downloadlinux-32ab60e5392066e5c5f71a93e37ea36ab726a526.tar.xz
net: phy: icplus: add MDI/MDIX support for IP101A/G
Implement the operations to set desired mode and retrieve the current mode. This feature was tested with an IP101G. Signed-off-by: Michael Walle <michael@walle.cc> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/icplus.c')
-rw-r--r--drivers/net/phy/icplus.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/net/phy/icplus.c b/drivers/net/phy/icplus.c
index 41bd0fa2ce17..4e15d4d02488 100644
--- a/drivers/net/phy/icplus.c
+++ b/drivers/net/phy/icplus.c
@@ -37,12 +37,17 @@ MODULE_LICENSE("GPL");
#define IP1001_SPEC_CTRL_STATUS_2 20 /* IP1001 Spec. Control Reg 2 */
#define IP1001_APS_ON 11 /* IP1001 APS Mode bit */
#define IP101A_G_APS_ON BIT(1) /* IP101A/G APS Mode bit */
+#define IP101A_G_AUTO_MDIX_DIS BIT(11)
#define IP101A_G_IRQ_CONF_STATUS 0x11 /* Conf Info IRQ & Status Reg */
#define IP101A_G_IRQ_PIN_USED BIT(15) /* INTR pin used */
#define IP101A_G_IRQ_ALL_MASK BIT(11) /* IRQ's inactive */
#define IP101A_G_IRQ_SPEED_CHANGE BIT(2)
#define IP101A_G_IRQ_DUPLEX_CHANGE BIT(1)
#define IP101A_G_IRQ_LINK_CHANGE BIT(0)
+#define IP101A_G_PHY_STATUS 18
+#define IP101A_G_MDIX BIT(9)
+#define IP101A_G_PHY_SPEC_CTRL 30
+#define IP101A_G_FORCE_MDIX BIT(3)
#define IP101G_PAGE_CONTROL 0x14
#define IP101G_PAGE_CONTROL_MASK GENMASK(4, 0)
@@ -299,6 +304,94 @@ static int ip101g_config_init(struct phy_device *phydev)
return ip101a_g_config_intr_pin(phydev);
}
+static int ip101a_g_read_status(struct phy_device *phydev)
+{
+ int oldpage, ret, stat1, stat2;
+
+ ret = genphy_read_status(phydev);
+ if (ret)
+ return ret;
+
+ oldpage = phy_select_page(phydev, IP101G_DEFAULT_PAGE);
+ if (oldpage < 0)
+ return oldpage;
+
+ ret = __phy_read(phydev, IP10XX_SPEC_CTRL_STATUS);
+ if (ret < 0)
+ goto out;
+ stat1 = ret;
+
+ ret = __phy_read(phydev, IP101A_G_PHY_SPEC_CTRL);
+ if (ret < 0)
+ goto out;
+ stat2 = ret;
+
+ if (stat1 & IP101A_G_AUTO_MDIX_DIS) {
+ if (stat2 & IP101A_G_FORCE_MDIX)
+ phydev->mdix_ctrl = ETH_TP_MDI_X;
+ else
+ phydev->mdix_ctrl = ETH_TP_MDI;
+ } else {
+ phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
+ }
+
+ if (stat2 & IP101A_G_MDIX)
+ phydev->mdix = ETH_TP_MDI_X;
+ else
+ phydev->mdix = ETH_TP_MDI;
+
+ ret = 0;
+
+out:
+ return phy_restore_page(phydev, oldpage, ret);
+}
+
+static int ip101a_g_config_mdix(struct phy_device *phydev)
+{
+ u16 ctrl = 0, ctrl2 = 0;
+ int oldpage, ret;
+
+ switch (phydev->mdix_ctrl) {
+ case ETH_TP_MDI:
+ ctrl = IP101A_G_AUTO_MDIX_DIS;
+ break;
+ case ETH_TP_MDI_X:
+ ctrl = IP101A_G_AUTO_MDIX_DIS;
+ ctrl2 = IP101A_G_FORCE_MDIX;
+ break;
+ case ETH_TP_MDI_AUTO:
+ break;
+ default:
+ return 0;
+ }
+
+ oldpage = phy_select_page(phydev, IP101G_DEFAULT_PAGE);
+ if (oldpage < 0)
+ return oldpage;
+
+ ret = __phy_modify(phydev, IP10XX_SPEC_CTRL_STATUS,
+ IP101A_G_AUTO_MDIX_DIS, ctrl);
+ if (ret)
+ goto out;
+
+ ret = __phy_modify(phydev, IP101A_G_PHY_SPEC_CTRL,
+ IP101A_G_FORCE_MDIX, ctrl2);
+
+out:
+ return phy_restore_page(phydev, oldpage, ret);
+}
+
+static int ip101a_g_config_aneg(struct phy_device *phydev)
+{
+ int ret;
+
+ ret = ip101a_g_config_mdix(phydev);
+ if (ret)
+ return ret;
+
+ return genphy_config_aneg(phydev);
+}
+
static int ip101a_g_ack_interrupt(struct phy_device *phydev)
{
int err;
@@ -504,6 +597,8 @@ static struct phy_driver icplus_driver[] = {
.config_intr = ip101a_g_config_intr,
.handle_interrupt = ip101a_g_handle_interrupt,
.config_init = ip101a_config_init,
+ .config_aneg = ip101a_g_config_aneg,
+ .read_status = ip101a_g_read_status,
.soft_reset = genphy_soft_reset,
.suspend = genphy_suspend,
.resume = genphy_resume,
@@ -516,6 +611,8 @@ static struct phy_driver icplus_driver[] = {
.config_intr = ip101a_g_config_intr,
.handle_interrupt = ip101a_g_handle_interrupt,
.config_init = ip101g_config_init,
+ .config_aneg = ip101a_g_config_aneg,
+ .read_status = ip101a_g_read_status,
.soft_reset = genphy_soft_reset,
.get_sset_count = ip101g_get_sset_count,
.get_strings = ip101g_get_strings,