From: Jassi Brar <jaswinder.si...@linaro.org>

Add RTL8201F phy-id and the related functions to the driver.

The original patch is as follows:
https://patchwork.kernel.org/patch/2538341/

Signed-off-by: Jongsung Kim <neidhard....@lge.com>
Signed-off-by: Jassi Brar <jaswinder.si...@linaro.org>
Signed-off-by: Kunihiko Hayashi <hayashi.kunih...@socionext.com>
---
 drivers/net/phy/realtek.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index 9cbe645..d9974ce 100644
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -29,10 +29,23 @@
 #define RTL8211F_PAGE_SELECT   0x1f
 #define RTL8211F_TX_DELAY      0x100
 
+#define RTL8201F_ISR           0x1e
+#define RTL8201F_PAGE_SELECT   0x1f
+#define RTL8201F_IER           0x13
+
 MODULE_DESCRIPTION("Realtek PHY driver");
 MODULE_AUTHOR("Johnson Leung");
 MODULE_LICENSE("GPL");
 
+static int rtl8201_ack_interrupt(struct phy_device *phydev)
+{
+       int err;
+
+       err = phy_read(phydev, RTL8201F_ISR);
+
+       return (err < 0) ? err : 0;
+}
+
 static int rtl821x_ack_interrupt(struct phy_device *phydev)
 {
        int err;
@@ -54,6 +67,25 @@ static int rtl8211f_ack_interrupt(struct phy_device *phydev)
        return (err < 0) ? err : 0;
 }
 
+static int rtl8201_config_intr(struct phy_device *phydev)
+{
+       int err;
+
+       /* switch to page 7 */
+       phy_write(phydev, RTL8201F_PAGE_SELECT, 0x7);
+
+       if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+               err = phy_write(phydev, RTL8201F_IER,
+                               BIT(13) | BIT(12) | BIT(11));
+       else
+               err = phy_write(phydev, RTL8201F_IER, 0);
+
+       /* restore to default page 0 */
+       phy_write(phydev, RTL8201F_PAGE_SELECT, 0x0);
+
+       return err;
+}
+
 static int rtl8211b_config_intr(struct phy_device *phydev)
 {
        int err;
@@ -129,6 +161,18 @@ static struct phy_driver realtek_drvs[] = {
                .config_aneg    = &genphy_config_aneg,
                .read_status    = &genphy_read_status,
        }, {
+               .phy_id         = 0x001cc816,
+               .name           = "RTL8201F 10/100Mbps Ethernet",
+               .phy_id_mask    = 0x001fffff,
+               .features       = PHY_BASIC_FEATURES,
+               .flags          = PHY_HAS_INTERRUPT,
+               .config_aneg    = &genphy_config_aneg,
+               .read_status    = &genphy_read_status,
+               .ack_interrupt  = &rtl8201_ack_interrupt,
+               .config_intr    = &rtl8201_config_intr,
+               .suspend        = genphy_suspend,
+               .resume         = genphy_resume,
+       }, {
                .phy_id         = 0x001cc912,
                .name           = "RTL8211B Gigabit Ethernet",
                .phy_id_mask    = 0x001fffff,
@@ -181,6 +225,7 @@ static struct phy_driver realtek_drvs[] = {
 module_phy_driver(realtek_drvs);
 
 static struct mdio_device_id __maybe_unused realtek_tbl[] = {
+       { 0x001cc816, 0x001fffff },
        { 0x001cc912, 0x001fffff },
        { 0x001cc914, 0x001fffff },
        { 0x001cc915, 0x001fffff },
-- 
2.7.4

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