mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 06:57:57 +00:00
4e82a80b68
Linkstation poweroff driver was added to mvebu target, but is required for kirkwood target too. This commit make two changes: - move linkstation-poweroff support patch from mvebu to generic and replace upstream accepted version - backport small linkstation-poweroff fix from 5.12 Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
200 lines
6.1 KiB
Diff
200 lines
6.1 KiB
Diff
From a7f79f99541eff4e6bcae0014eb08d3019337565 Mon Sep 17 00:00:00 2001
|
|
From: =?UTF-8?q?Daniel=20Gonz=C3=A1lez=20Cabanelas?= <dgcbueu@gmail.com>
|
|
Date: Wed, 15 Jul 2020 15:35:14 +0200
|
|
Subject: [PATCH] power: reset: add driver for LinkStation power off
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
Some Buffalo LinkStations perform the power off operation, at restart
|
|
time, depending on the state of an output pin (LED2/INTn) at the ethernet
|
|
PHY. This pin is also used to wake the machine when a WoL packet is
|
|
received by the PHY.
|
|
|
|
The driver is required by the Buffalo LinkStation LS421DE (ARM MVEBU),
|
|
and other models. Without it, the board remains forever halted if a
|
|
power off command is executed, unless the PSU is disconnected and
|
|
connected again.
|
|
|
|
Add the driver to provide the power off function and also make the WoL
|
|
feature to be available.
|
|
|
|
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
|
|
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
|
|
---
|
|
drivers/power/reset/Kconfig | 11 ++
|
|
drivers/power/reset/Makefile | 1 +
|
|
drivers/power/reset/linkstation-poweroff.c | 136 +++++++++++++++++++++
|
|
3 files changed, 148 insertions(+)
|
|
create mode 100644 drivers/power/reset/linkstation-poweroff.c
|
|
|
|
--- a/drivers/power/reset/Kconfig
|
|
+++ b/drivers/power/reset/Kconfig
|
|
@@ -99,6 +99,17 @@ config POWER_RESET_HISI
|
|
help
|
|
Reboot support for Hisilicon boards.
|
|
|
|
+config POWER_RESET_LINKSTATION
|
|
+ tristate "Buffalo LinkStation power-off driver"
|
|
+ depends on ARCH_MVEBU || COMPILE_TEST
|
|
+ depends on OF_MDIO && PHYLIB
|
|
+ help
|
|
+ This driver supports turning off some Buffalo LinkStations by
|
|
+ setting an output pin at the ethernet PHY to the correct state.
|
|
+ It also makes the device compatible with the WoL function.
|
|
+
|
|
+ Say Y here if you have a Buffalo LinkStation LS421D/E.
|
|
+
|
|
config POWER_RESET_MSM
|
|
bool "Qualcomm MSM power-off driver"
|
|
depends on ARCH_QCOM
|
|
--- a/drivers/power/reset/Makefile
|
|
+++ b/drivers/power/reset/Makefile
|
|
@@ -10,6 +10,7 @@ obj-$(CONFIG_POWER_RESET_GEMINI_POWEROFF
|
|
obj-$(CONFIG_POWER_RESET_GPIO) += gpio-poweroff.o
|
|
obj-$(CONFIG_POWER_RESET_GPIO_RESTART) += gpio-restart.o
|
|
obj-$(CONFIG_POWER_RESET_HISI) += hisi-reboot.o
|
|
+obj-${CONFIG_POWER_RESET_LINKSTATION} += linkstation-poweroff.o
|
|
obj-$(CONFIG_POWER_RESET_MSM) += msm-poweroff.o
|
|
obj-$(CONFIG_POWER_RESET_QCOM_PON) += qcom-pon.o
|
|
obj-$(CONFIG_POWER_RESET_OCELOT_RESET) += ocelot-reset.o
|
|
--- /dev/null
|
|
+++ b/drivers/power/reset/linkstation-poweroff.c
|
|
@@ -0,0 +1,136 @@
|
|
+// SPDX-License-Identifier: GPL-2.0
|
|
+/*
|
|
+ * LinkStation power off restart driver
|
|
+ * Copyright (C) 2020 Daniel González Cabanelas <dgcbueu@gmail.com>
|
|
+ */
|
|
+
|
|
+#include <linux/module.h>
|
|
+#include <linux/notifier.h>
|
|
+#include <linux/of.h>
|
|
+#include <linux/of_mdio.h>
|
|
+#include <linux/of_platform.h>
|
|
+#include <linux/reboot.h>
|
|
+#include <linux/phy.h>
|
|
+
|
|
+/* Defines from the eth phy Marvell driver */
|
|
+#define MII_MARVELL_COPPER_PAGE 0
|
|
+#define MII_MARVELL_LED_PAGE 3
|
|
+#define MII_MARVELL_WOL_PAGE 17
|
|
+#define MII_MARVELL_PHY_PAGE 22
|
|
+
|
|
+#define MII_PHY_LED_CTRL 16
|
|
+#define MII_88E1318S_PHY_LED_TCR 18
|
|
+#define MII_88E1318S_PHY_WOL_CTRL 16
|
|
+#define MII_M1011_IEVENT 19
|
|
+
|
|
+#define MII_88E1318S_PHY_LED_TCR_INTn_ENABLE BIT(7)
|
|
+#define MII_88E1318S_PHY_LED_TCR_FORCE_INT BIT(15)
|
|
+#define MII_88E1318S_PHY_WOL_CTRL_CLEAR_WOL_STATUS BIT(12)
|
|
+#define LED2_FORCE_ON (0x8 << 8)
|
|
+#define LEDMASK GENMASK(11,8)
|
|
+
|
|
+static struct phy_device *phydev;
|
|
+
|
|
+static void mvphy_reg_intn(u16 data)
|
|
+{
|
|
+ int rc = 0, saved_page;
|
|
+
|
|
+ saved_page = phy_select_page(phydev, MII_MARVELL_LED_PAGE);
|
|
+ if (saved_page < 0)
|
|
+ goto err;
|
|
+
|
|
+ /* Force manual LED2 control to let INTn work */
|
|
+ __phy_modify(phydev, MII_PHY_LED_CTRL, LEDMASK, LED2_FORCE_ON);
|
|
+
|
|
+ /* Set the LED[2]/INTn pin to the required state */
|
|
+ __phy_modify(phydev, MII_88E1318S_PHY_LED_TCR,
|
|
+ MII_88E1318S_PHY_LED_TCR_FORCE_INT,
|
|
+ MII_88E1318S_PHY_LED_TCR_INTn_ENABLE | data);
|
|
+
|
|
+ if (!data) {
|
|
+ /* Clear interrupts to ensure INTn won't be holded in high state */
|
|
+ __phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_MARVELL_COPPER_PAGE);
|
|
+ __phy_read(phydev, MII_M1011_IEVENT);
|
|
+
|
|
+ /* 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 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);
|
|
+
|
|
+ return NOTIFY_DONE;
|
|
+}
|
|
+
|
|
+static struct notifier_block linkstation_reboot_nb = {
|
|
+ .notifier_call = linkstation_reboot_notifier,
|
|
+};
|
|
+
|
|
+static void linkstation_poweroff(void)
|
|
+{
|
|
+ unregister_reboot_notifier(&linkstation_reboot_nb);
|
|
+ mvphy_reg_intn(0);
|
|
+
|
|
+ kernel_restart("Power off");
|
|
+}
|
|
+
|
|
+static const struct of_device_id ls_poweroff_of_match[] = {
|
|
+ { .compatible = "buffalo,ls421d" },
|
|
+ { .compatible = "buffalo,ls421de" },
|
|
+ { },
|
|
+};
|
|
+
|
|
+static int __init linkstation_poweroff_init(void)
|
|
+{
|
|
+ struct mii_bus *bus;
|
|
+ struct device_node *dn;
|
|
+
|
|
+ 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");
|
|
+ if (!dn)
|
|
+ return -ENODEV;
|
|
+
|
|
+ bus = of_mdio_find_bus(dn);
|
|
+ of_node_put(dn);
|
|
+ if (!bus)
|
|
+ return -EPROBE_DEFER;
|
|
+
|
|
+ phydev = phy_find_first(bus);
|
|
+ if (!phydev)
|
|
+ return -EPROBE_DEFER;
|
|
+
|
|
+ register_reboot_notifier(&linkstation_reboot_nb);
|
|
+ pm_power_off = linkstation_poweroff;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void __exit linkstation_poweroff_exit(void)
|
|
+{
|
|
+ pm_power_off = NULL;
|
|
+ unregister_reboot_notifier(&linkstation_reboot_nb);
|
|
+}
|
|
+
|
|
+module_init(linkstation_poweroff_init);
|
|
+module_exit(linkstation_poweroff_exit);
|
|
+
|
|
+MODULE_AUTHOR("Daniel González Cabanelas <dgcbueu@gmail.com>");
|
|
+MODULE_DESCRIPTION("LinkStation power off driver");
|
|
+MODULE_LICENSE("GPL v2");
|