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authorPawel Dembicki <paweldembicki@gmail.com>2021-06-24 12:18:12 +0300
committerSebastian Reichel <sre@kernel.org>2021-08-13 20:16:41 +0300
commit0c77ec3da8c156d6d02ce0934b590cfe8a313cae (patch)
tree611fbdf7b9c5723f7f945540175d06e4b410ac60 /drivers/power
parente2f471efe1d607a7aff38ce53ec717cebe4283d6 (diff)
downloadlinux-0c77ec3da8c156d6d02ce0934b590cfe8a313cae.tar.xz
power: reset: linkstation-poweroff: add new device
This commit introduces support for NETGEAR ReadyNAS Duo v2. This device use bit 4 of LED[2:0] Polarity Control Register to indicate AC Power loss. For more details about AC loss detection in NETGEAR ReadyNAS Duo v2, please look at the file: RND_5.3.13_WW.src/u-boot/board/mv_feroceon/mv_hal/usibootup/usibootup.c from Netgear GPL sources. Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/power')
-rw-r--r--drivers/power/reset/linkstation-poweroff.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/power/reset/linkstation-poweroff.c b/drivers/power/reset/linkstation-poweroff.c
index cb5a32f852c1..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
@@ -29,6 +30,8 @@
#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);
@@ -76,11 +79,47 @@ 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)
{
@@ -109,6 +148,9 @@ static const struct of_device_id ls_poweroff_of_match[] = {
{ .compatible = "buffalo,ls421de",
.data = &linkstation_power_off_cfg,
},
+ { .compatible = "netgear,readynas-duo-v2",
+ .data = &readynas_power_off_cfg,
+ },
{ },
};