mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2025-01-30 11:23:15 +00:00
kernel: generic: backport linkstation-poweroff driver
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>
This commit is contained in:
Pawel Dembicki
Christian Lamparter
parent
c6ab514863
commit
4e82a80b68
@ -0,0 +1,27 @@
|
||||
From 1027a42c25cbf8cfc4ade6503c5110aae04866af Mon Sep 17 00:00:00 2001
|
||||
From: =?UTF-8?q?Daniel=20Gonz=C3=A1lez=20Cabanelas?= <dgcbueu@gmail.com>
|
||||
Date: Fri, 16 Oct 2020 20:22:37 +0200
|
||||
Subject: [PATCH] power: reset: linkstation-poweroff: add missing put_device()
|
||||
MIME-Version: 1.0
|
||||
Content-Type: text/plain; charset=UTF-8
|
||||
Content-Transfer-Encoding: 8bit
|
||||
|
||||
The of_mdio_find_bus() takes a reference to the underlying device
|
||||
structure, we should release that reference using a put_device() call.
|
||||
|
||||
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
|
||||
Signed-off-by: Sebastian Reichel <sre@kernel.org>
|
||||
---
|
||||
drivers/power/reset/linkstation-poweroff.c | 1 +
|
||||
1 file changed, 1 insertion(+)
|
||||
|
||||
--- a/drivers/power/reset/linkstation-poweroff.c
|
||||
+++ b/drivers/power/reset/linkstation-poweroff.c
|
||||
@@ -113,6 +113,7 @@ static int __init linkstation_poweroff_i
|
||||
return -EPROBE_DEFER;
|
||||
|
||||
phydev = phy_find_first(bus);
|
||||
+ put_device(&bus->dev);
|
||||
if (!phydev)
|
||||
return -EPROBE_DEFER;
|
||||
|
||||
@ -0,0 +1,199 @@
|
||||
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");
|
||||
@ -0,0 +1,27 @@
|
||||
From 1027a42c25cbf8cfc4ade6503c5110aae04866af Mon Sep 17 00:00:00 2001
|
||||
From: =?UTF-8?q?Daniel=20Gonz=C3=A1lez=20Cabanelas?= <dgcbueu@gmail.com>
|
||||
Date: Fri, 16 Oct 2020 20:22:37 +0200
|
||||
Subject: [PATCH] power: reset: linkstation-poweroff: add missing put_device()
|
||||
MIME-Version: 1.0
|
||||
Content-Type: text/plain; charset=UTF-8
|
||||
Content-Transfer-Encoding: 8bit
|
||||
|
||||
The of_mdio_find_bus() takes a reference to the underlying device
|
||||
structure, we should release that reference using a put_device() call.
|
||||
|
||||
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
|
||||
Signed-off-by: Sebastian Reichel <sre@kernel.org>
|
||||
---
|
||||
drivers/power/reset/linkstation-poweroff.c | 1 +
|
||||
1 file changed, 1 insertion(+)
|
||||
|
||||
--- a/drivers/power/reset/linkstation-poweroff.c
|
||||
+++ b/drivers/power/reset/linkstation-poweroff.c
|
||||
@@ -113,6 +113,7 @@ static int __init linkstation_poweroff_i
|
||||
return -EPROBE_DEFER;
|
||||
|
||||
phydev = phy_find_first(bus);
|
||||
+ put_device(&bus->dev);
|
||||
if (!phydev)
|
||||
return -EPROBE_DEFER;
|
||||
|
||||
@ -4131,6 +4131,7 @@ CONFIG_POSIX_TIMERS=y
|
||||
# CONFIG_POWER_RESET_BRCMSTB is not set
|
||||
# CONFIG_POWER_RESET_GPIO is not set
|
||||
# CONFIG_POWER_RESET_GPIO_RESTART is not set
|
||||
# CONFIG_POWER_RESET_LINKSTATION is not set
|
||||
# CONFIG_POWER_RESET_LTC2952 is not set
|
||||
# CONFIG_POWER_RESET_PIIX4_POWEROFF is not set
|
||||
# CONFIG_POWER_RESET_RESTART is not set
|
||||
|
||||
Loading…
Reference in New Issue
Block a user