kirkwood: add support for NETGEAR ReadyNAS Duo v2

[openwrt/staging/chunkeey.git] / target / linux / kirkwood / patches-5.4 / 801-power-reset-linkstation-poweroff-add-new-device.patch

diff --git a/target/linux/kirkwood/patches-5.4/801-power-reset-linkstation-poweroff-add-new-device.patch b/target/linux/kirkwood/patches-5.4/801-power-reset-linkstation-poweroff-add-new-device.patch
new file mode 100644 (file)
index 0000000..0b3b4ad
--- /dev/null
+++ b/target/linux/kirkwood/patches-5.4/801-power-reset-linkstation-poweroff-add-new-device.patch
@@ -0,0 +1,102 @@
+From a2d9c86df8d12646f5bf66920e4f1e6d940cfc62 Mon Sep 17 00:00:00 2001
+From: Pawel Dembicki <paweldembicki@gmail.com>
+Date: Fri, 18 Jun 2021 13:25:33 +0200
+Subject: [PATCH 2/2] 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>
+---
+ drivers/power/reset/linkstation-poweroff.c | 43 ++++++++++++++++++++++
+ 1 file changed, 43 insertions(+)
+
+diff --git a/drivers/power/reset/linkstation-poweroff.c b/drivers/power/reset/linkstation-poweroff.c
+index 8691cf98600d..2a92b6052cac 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 +79,48 @@ static void linkstation_mvphy_reg_intn(bool restart)
+               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 +149,9 @@ 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,
++      },
+       { },
+ };
+ 
+-- 
+2.25.1
+