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Diffstat (limited to 'drivers/net/phy/realtek.c')
-rw-r--r--drivers/net/phy/realtek.c106
1 files changed, 78 insertions, 28 deletions
diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index 10df52ccddfe..a669945eb829 100644
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -23,11 +23,15 @@
#define RTL821x_INSR 0x13
+#define RTL821x_EXT_PAGE_SELECT 0x1e
#define RTL821x_PAGE_SELECT 0x1f
#define RTL8211F_INSR 0x1d
#define RTL8211F_TX_DELAY BIT(8)
+#define RTL8211E_TX_DELAY BIT(1)
+#define RTL8211E_RX_DELAY BIT(2)
+#define RTL8211E_MODE_MII_GMII BIT(3)
#define RTL8201F_ISR 0x1e
#define RTL8201F_IER 0x13
@@ -151,29 +155,79 @@ static int rtl8211_config_aneg(struct phy_device *phydev)
static int rtl8211c_config_init(struct phy_device *phydev)
{
/* RTL8211C has an issue when operating in Gigabit slave mode */
- phy_set_bits(phydev, MII_CTRL1000,
- CTL1000_ENABLE_MASTER | CTL1000_AS_MASTER);
-
- return genphy_config_init(phydev);
+ return phy_set_bits(phydev, MII_CTRL1000,
+ CTL1000_ENABLE_MASTER | CTL1000_AS_MASTER);
}
static int rtl8211f_config_init(struct phy_device *phydev)
{
- int ret;
- u16 val = 0;
-
- ret = genphy_config_init(phydev);
- if (ret < 0)
- return ret;
+ u16 val;
- /* enable TX-delay for rgmii-id and rgmii-txid, otherwise disable it */
- if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
- phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
+ /* enable TX-delay for rgmii-{id,txid}, and disable it for rgmii and
+ * rgmii-rxid. The RX-delay can be enabled by the external RXDLY pin.
+ */
+ switch (phydev->interface) {
+ case PHY_INTERFACE_MODE_RGMII:
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ val = 0;
+ break;
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ case PHY_INTERFACE_MODE_RGMII_TXID:
val = RTL8211F_TX_DELAY;
+ break;
+ default: /* the rest of the modes imply leaving delay as is. */
+ return 0;
+ }
return phy_modify_paged(phydev, 0xd08, 0x11, RTL8211F_TX_DELAY, val);
}
+static int rtl8211e_config_init(struct phy_device *phydev)
+{
+ int ret = 0, oldpage;
+ u16 val;
+
+ /* enable TX/RX delay for rgmii-* modes, and disable them for rgmii. */
+ switch (phydev->interface) {
+ case PHY_INTERFACE_MODE_RGMII:
+ val = 0;
+ break;
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ val = RTL8211E_TX_DELAY | RTL8211E_RX_DELAY;
+ break;
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ val = RTL8211E_RX_DELAY;
+ break;
+ case PHY_INTERFACE_MODE_RGMII_TXID:
+ val = RTL8211E_TX_DELAY;
+ break;
+ default: /* the rest of the modes imply leaving delays as is. */
+ return 0;
+ }
+
+ /* According to a sample driver there is a 0x1c config register on the
+ * 0xa4 extension page (0x7) layout. It can be used to disable/enable
+ * the RX/TX delays otherwise controlled by RXDLY/TXDLY pins. It can
+ * also be used to customize the whole configuration register:
+ * 8:6 = PHY Address, 5:4 = Auto-Negotiation, 3 = Interface Mode Select,
+ * 2 = RX Delay, 1 = TX Delay, 0 = SELRGV (see original PHY datasheet
+ * for details).
+ */
+ oldpage = phy_select_page(phydev, 0x7);
+ if (oldpage < 0)
+ goto err_restore_page;
+
+ ret = __phy_write(phydev, RTL821x_EXT_PAGE_SELECT, 0xa4);
+ if (ret)
+ goto err_restore_page;
+
+ ret = __phy_modify(phydev, 0x1c, RTL8211E_TX_DELAY | RTL8211E_RX_DELAY,
+ val);
+
+err_restore_page:
+ return phy_restore_page(phydev, oldpage, ret);
+}
+
static int rtl8211b_suspend(struct phy_device *phydev)
{
phy_write(phydev, MII_MMD_DATA, BIT(9));
@@ -192,10 +246,6 @@ static int rtl8366rb_config_init(struct phy_device *phydev)
{
int ret;
- ret = genphy_config_init(phydev);
- if (ret < 0)
- return ret;
-
ret = phy_set_bits(phydev, RTL8366RB_POWER_SAVE,
RTL8366RB_POWER_SAVE_ON);
if (ret) {
@@ -210,11 +260,9 @@ static struct phy_driver realtek_drvs[] = {
{
PHY_ID_MATCH_EXACT(0x00008201),
.name = "RTL8201CP Ethernet",
- .features = PHY_BASIC_FEATURES,
}, {
PHY_ID_MATCH_EXACT(0x001cc816),
.name = "RTL8201F Fast Ethernet",
- .features = PHY_BASIC_FEATURES,
.ack_interrupt = &rtl8201_ack_interrupt,
.config_intr = &rtl8201_config_intr,
.suspend = genphy_suspend,
@@ -224,47 +272,52 @@ static struct phy_driver realtek_drvs[] = {
}, {
PHY_ID_MATCH_EXACT(0x001cc910),
.name = "RTL8211 Gigabit Ethernet",
- .features = PHY_GBIT_FEATURES,
.config_aneg = rtl8211_config_aneg,
.read_mmd = &genphy_read_mmd_unsupported,
.write_mmd = &genphy_write_mmd_unsupported,
+ .read_page = rtl821x_read_page,
+ .write_page = rtl821x_write_page,
}, {
PHY_ID_MATCH_EXACT(0x001cc912),
.name = "RTL8211B Gigabit Ethernet",
- .features = PHY_GBIT_FEATURES,
.ack_interrupt = &rtl821x_ack_interrupt,
.config_intr = &rtl8211b_config_intr,
.read_mmd = &genphy_read_mmd_unsupported,
.write_mmd = &genphy_write_mmd_unsupported,
.suspend = rtl8211b_suspend,
.resume = rtl8211b_resume,
+ .read_page = rtl821x_read_page,
+ .write_page = rtl821x_write_page,
}, {
PHY_ID_MATCH_EXACT(0x001cc913),
.name = "RTL8211C Gigabit Ethernet",
- .features = PHY_GBIT_FEATURES,
.config_init = rtl8211c_config_init,
.read_mmd = &genphy_read_mmd_unsupported,
.write_mmd = &genphy_write_mmd_unsupported,
+ .read_page = rtl821x_read_page,
+ .write_page = rtl821x_write_page,
}, {
PHY_ID_MATCH_EXACT(0x001cc914),
.name = "RTL8211DN Gigabit Ethernet",
- .features = PHY_GBIT_FEATURES,
.ack_interrupt = rtl821x_ack_interrupt,
.config_intr = rtl8211e_config_intr,
.suspend = genphy_suspend,
.resume = genphy_resume,
+ .read_page = rtl821x_read_page,
+ .write_page = rtl821x_write_page,
}, {
PHY_ID_MATCH_EXACT(0x001cc915),
.name = "RTL8211E Gigabit Ethernet",
- .features = PHY_GBIT_FEATURES,
+ .config_init = &rtl8211e_config_init,
.ack_interrupt = &rtl821x_ack_interrupt,
.config_intr = &rtl8211e_config_intr,
.suspend = genphy_suspend,
.resume = genphy_resume,
+ .read_page = rtl821x_read_page,
+ .write_page = rtl821x_write_page,
}, {
PHY_ID_MATCH_EXACT(0x001cc916),
.name = "RTL8211F Gigabit Ethernet",
- .features = PHY_GBIT_FEATURES,
.config_init = &rtl8211f_config_init,
.ack_interrupt = &rtl8211f_ack_interrupt,
.config_intr = &rtl8211f_config_intr,
@@ -275,8 +328,6 @@ static struct phy_driver realtek_drvs[] = {
}, {
PHY_ID_MATCH_EXACT(0x001cc800),
.name = "Generic Realtek PHY",
- .features = PHY_GBIT_FEATURES,
- .config_init = genphy_config_init,
.suspend = genphy_suspend,
.resume = genphy_resume,
.read_page = rtl821x_read_page,
@@ -284,7 +335,6 @@ static struct phy_driver realtek_drvs[] = {
}, {
PHY_ID_MATCH_EXACT(0x001cc961),
.name = "RTL8366RB Gigabit Ethernet",
- .features = PHY_GBIT_FEATURES,
.config_init = &rtl8366rb_config_init,
/* These interrupts are handled by the irq controller
* embedded inside the RTL8366RB, they get unmasked when the
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.