1 files changed, 71 insertions, 6 deletions

diff --git a/drivers/power/reset/linkstation-poweroff.c b/drivers/power/reset/linkstation-poweroff.c
index f1e843df0e16..02f5fdb8ffc4 100644
--- a/drivers/power/reset/linkstation-poweroff.c
+++ b/drivers/power/reset/linkstation-poweroff.c
@@ -19,6 +19,7 @@
 #define MII_MARVELL_PHY_PAGE		22
 
 #define MII_PHY_LED_CTRL		16
+#define MII_PHY_LED_POL_CTRL		17
 #define MII_88E1318S_PHY_LED_TCR	18
 #define MII_88E1318S_PHY_WOL_CTRL	16
 #define MII_M1011_IEVENT		19
@@ -29,11 +30,23 @@
 #define LED2_FORCE_ON					(0x8 << 8)
 #define LEDMASK						GENMASK(11,8)
 
+#define MII_88E1318S_PHY_LED_POL_LED2		BIT(4)
+
+struct power_off_cfg {
+	char *mdio_node_name;
+	void (*phy_set_reg)(bool restart);
+};
+
 static struct phy_device *phydev;
+static const struct power_off_cfg *cfg;
 
-static void mvphy_reg_intn(u16 data)
+static void linkstation_mvphy_reg_intn(bool restart)
 {
 	int rc = 0, saved_page;
+	u16 data = 0;
+
+	if (restart)
+		data = MII_88E1318S_PHY_LED_TCR_FORCE_INT;
 
 	saved_page = phy_select_page(phydev, MII_MARVELL_LED_PAGE);
 	if (saved_page < 0)
@@ -66,11 +79,52 @@ err:
 		dev_err(&phydev->mdio.dev, "Write register failed, %d\n", rc);
 }
 
+static void readynas_mvphy_set_reg(bool restart)
+{
+	int rc = 0, saved_page;
+	u16 data = 0;
+
+	if (restart)
+		data = MII_88E1318S_PHY_LED_POL_LED2;
+
+	saved_page = phy_select_page(phydev, MII_MARVELL_LED_PAGE);
+	if (saved_page < 0)
+		goto err;
+
+	/* Set the LED[2].0 Polarity bit to the required state */
+	__phy_modify(phydev, MII_PHY_LED_POL_CTRL,
+		     MII_88E1318S_PHY_LED_POL_LED2, data);
+
+	if (!data) {
+		/* If WOL was enabled and a magic packet was received before powering
+		 * off, we won't be able to wake up by sending another magic packet.
+		 * Clear WOL status.
+		 */
+		__phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_MARVELL_WOL_PAGE);
+		__phy_set_bits(phydev, MII_88E1318S_PHY_WOL_CTRL,
+			       MII_88E1318S_PHY_WOL_CTRL_CLEAR_WOL_STATUS);
+	}
+err:
+	rc = phy_restore_page(phydev, saved_page, rc);
+	if (rc < 0)
+		dev_err(&phydev->mdio.dev, "Write register failed, %d\n", rc);
+}
+
+static const struct power_off_cfg linkstation_power_off_cfg = {
+	.mdio_node_name = "mdio",
+	.phy_set_reg = linkstation_mvphy_reg_intn,
+};
+
+static const struct power_off_cfg readynas_power_off_cfg = {
+	.mdio_node_name = "mdio-bus",
+	.phy_set_reg = readynas_mvphy_set_reg,
+};
+
 static int linkstation_reboot_notifier(struct notifier_block *nb,
 				       unsigned long action, void *unused)
 {
 	if (action == SYS_RESTART)
-		mvphy_reg_intn(MII_88E1318S_PHY_LED_TCR_FORCE_INT);
+		cfg->phy_set_reg(true);
 
 	return NOTIFY_DONE;
 }
@@ -82,14 +136,21 @@ static struct notifier_block linkstation_reboot_nb = {
 static void linkstation_poweroff(void)
 {
 	unregister_reboot_notifier(&linkstation_reboot_nb);
-	mvphy_reg_intn(0);
+	cfg->phy_set_reg(false);
 
 	kernel_restart("Power off");
 }
 
 static const struct of_device_id ls_poweroff_of_match[] = {
-	{ .compatible = "buffalo,ls421d" },
-	{ .compatible = "buffalo,ls421de" },
+	{ .compatible = "buffalo,ls421d",
+	  .data = &linkstation_power_off_cfg,
+	},
+	{ .compatible = "buffalo,ls421de",
+	  .data = &linkstation_power_off_cfg,
+	},
+	{ .compatible = "netgear,readynas-duo-v2",
+	  .data = &readynas_power_off_cfg,
+	},
 	{ },
 };
 
@@ -97,13 +158,17 @@ static int __init linkstation_poweroff_init(void)
 {
 	struct mii_bus *bus;
 	struct device_node *dn;
+	const struct of_device_id *match;
 
 	dn = of_find_matching_node(NULL, ls_poweroff_of_match);
 	if (!dn)
 		return -ENODEV;
 	of_node_put(dn);
 
-	dn = of_find_node_by_name(NULL, "mdio");
+	match = of_match_node(ls_poweroff_of_match, dn);
+	cfg = match->data;
+
+	dn = of_find_node_by_name(NULL, cfg->mdio_node_name);
 	if (!dn)
 		return -ENODEV;