mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-19 13:48:06 +00:00
mvebu: backport linkstation-poweroff upstream driver
Backport the Linkstation poweroff driver from the kernel upstream (commit a7f79f99541ef) This driver is required by the Buffalo LinkStation LS421DE for a correct power off operation. It also allows to use the WoL feature. Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
This commit is contained in:
Daniel González Cabanelas
Daniel Golle
parent
09faa73c53
commit
59c200ca0a
21
target/linux/mvebu/modules.mk
Normal file
21
target/linux/mvebu/modules.mk
Normal file
@ -0,0 +1,21 @@
|
|||||||
|
define KernelPackage/linkstation-poweroff
|
||||||
|
SUBMENU:=$(OTHER_MENU)
|
||||||
|
DEPENDS:=@TARGET_mvebu
|
||||||
|
TITLE:=Buffalo LinkStation power off driver
|
||||||
|
KCONFIG:= \
|
||||||
|
CONFIG_POWER_RESET=y \
|
||||||
|
CONFIG_POWER_RESET_LINKSTATION \
|
||||||
|
CONFIG_POWER_RESET_QNAP=n
|
||||||
|
|
||||||
|
FILES:=$(LINUX_DIR)/drivers/power/reset/linkstation-poweroff.ko
|
||||||
|
AUTOLOAD:=$(call AutoLoad,31,linkstation-poweroff,1)
|
||||||
|
endef
|
||||||
|
|
||||||
|
define KernelPackage/linkstation-poweroff/description
|
||||||
|
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.
|
||||||
|
endef
|
||||||
|
|
||||||
|
$(eval $(call KernelPackage,linkstation-poweroff))
|
||||||
177
target/linux/mvebu/patches-5.4/030-linkstation-poweroff.patch
Normal file
177
target/linux/mvebu/patches-5.4/030-linkstation-poweroff.patch
Normal file
@ -0,0 +1,177 @@
|
|||||||
|
--- a/drivers/power/reset/Kconfig
|
||||||
|
+++ b/drivers/power/reset/Kconfig
|
||||||
|
@@ -99,6 +99,17 @@
|
||||||
|
help
|
||||||
|
Reboot support for Hisilicon boards.
|
||||||
|
|
||||||
|
+config POWER_RESET_LINKSTATION
|
||||||
|
+ tristate "Buffalo LinkStation power-off driver"
|
||||||
|
+ depends on ARCH_MVEBU || COMPILE_TEST
|
||||||
|
+ depends on OF_MDIO && PHYLIB
|
||||||
|
+ help
|
||||||
|
+ This driver supports turning off some Buffalo LinkStations by
|
||||||
|
+ setting an output pin at the ethernet PHY to the correct state.
|
||||||
|
+ It also makes the device compatible with the WoL function.
|
||||||
|
+
|
||||||
|
+ Say Y here if you have a Buffalo LinkStation LS421D/E.
|
||||||
|
+
|
||||||
|
config POWER_RESET_MSM
|
||||||
|
bool "Qualcomm MSM power-off driver"
|
||||||
|
depends on ARCH_QCOM
|
||||||
|
--- a/drivers/power/reset/Makefile
|
||||||
|
+++ b/drivers/power/reset/Makefile
|
||||||
|
@@ -10,6 +10,7 @@
|
||||||
|
obj-$(CONFIG_POWER_RESET_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
|
||||||
|
--- a/dev/null
|
||||||
|
+++ b/drivers/power/reset/linkstation-poweroff.c
|
||||||
|
@@ -0,0 +1,144 @@
|
||||||
|
+// 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);
|
||||||
|
+
|
||||||
|
+ if (!data) {
|
||||||
|
+ /* Slow down the PHY to save energy */
|
||||||
|
+ rc= phy_speed_down(phydev, false);
|
||||||
|
+ if (rc < 0)
|
||||||
|
+ dev_err(&phydev->mdio.dev, "PHY speed down 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;
|
||||||
|
+
|
||||||
|
+ pr_info("LinkStation power off driver registered\n");
|
||||||
|
+ 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");
|
||||||
Loading…
Reference in New Issue
Block a user