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-rw-r--r--drivers/power/reset/Kconfig8
-rw-r--r--drivers/power/reset/Makefile1
-rw-r--r--drivers/power/reset/at91-poweroff.c2
-rw-r--r--drivers/power/reset/at91-reset.c12
-rw-r--r--drivers/power/reset/hisi-reboot.c2
-rw-r--r--drivers/power/reset/keystone-reset.c2
-rw-r--r--drivers/power/reset/st-poweroff.c2
-rw-r--r--drivers/power/reset/syscon-poweroff.c102
-rw-r--r--drivers/power/reset/syscon-reboot.c2
-rw-r--r--drivers/power/reset/vexpress-poweroff.c2
-rw-r--r--drivers/power/reset/xgene-reboot.c2
11 files changed, 124 insertions, 13 deletions
diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig
index 27f6646731b0..aad9c3318c02 100644
--- a/drivers/power/reset/Kconfig
+++ b/drivers/power/reset/Kconfig
@@ -151,9 +151,17 @@ config POWER_RESET_SYSCON
help
Reboot support for generic SYSCON mapped register reset.
+config POWER_RESET_SYSCON_POWEROFF
+ bool "Generic SYSCON regmap poweroff driver"
+ depends on OF
+ select MFD_SYSCON
+ help
+ Poweroff support for generic SYSCON mapped register poweroff.
+
config POWER_RESET_RMOBILE
tristate "Renesas R-Mobile reset driver"
depends on ARCH_RMOBILE || COMPILE_TEST
+ depends on HAS_IOMEM
help
Reboot support for Renesas R-Mobile and SH-Mobile SoCs.
diff --git a/drivers/power/reset/Makefile b/drivers/power/reset/Makefile
index 11de15bae52e..dbe06c368743 100644
--- a/drivers/power/reset/Makefile
+++ b/drivers/power/reset/Makefile
@@ -17,4 +17,5 @@ obj-$(CONFIG_POWER_RESET_VEXPRESS) += vexpress-poweroff.o
obj-$(CONFIG_POWER_RESET_XGENE) += xgene-reboot.o
obj-$(CONFIG_POWER_RESET_KEYSTONE) += keystone-reset.o
obj-$(CONFIG_POWER_RESET_SYSCON) += syscon-reboot.o
+obj-$(CONFIG_POWER_RESET_SYSCON_POWEROFF) += syscon-poweroff.o
obj-$(CONFIG_POWER_RESET_RMOBILE) += rmobile-reset.o
diff --git a/drivers/power/reset/at91-poweroff.c b/drivers/power/reset/at91-poweroff.c
index 4b72ea51c364..9847cfb7e23d 100644
--- a/drivers/power/reset/at91-poweroff.c
+++ b/drivers/power/reset/at91-poweroff.c
@@ -140,7 +140,7 @@ static int at91_poweroff_probe(struct platform_device *pdev)
return 0;
}
-static struct of_device_id at91_poweroff_of_match[] = {
+static const struct of_device_id at91_poweroff_of_match[] = {
{ .compatible = "atmel,at91sam9260-shdwc", },
{ .compatible = "atmel,at91sam9rl-shdwc", },
{ .compatible = "atmel,at91sam9x5-shdwc", },
diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c
index 13584e24736a..01c7055c4200 100644
--- a/drivers/power/reset/at91-reset.c
+++ b/drivers/power/reset/at91-reset.c
@@ -73,8 +73,8 @@ static int at91sam9260_restart(struct notifier_block *this, unsigned long mode,
: "r" (at91_ramc_base[0]),
"r" (at91_rstc_base),
"r" (1),
- "r" (AT91_SDRAMC_LPCB_POWER_DOWN),
- "r" (AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST));
+ "r" cpu_to_le32(AT91_SDRAMC_LPCB_POWER_DOWN),
+ "r" cpu_to_le32(AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST));
return NOTIFY_DONE;
}
@@ -116,8 +116,8 @@ static int at91sam9g45_restart(struct notifier_block *this, unsigned long mode,
"r" (at91_ramc_base[1]),
"r" (at91_rstc_base),
"r" (1),
- "r" (AT91_DDRSDRC_LPCB_POWER_DOWN),
- "r" (AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST)
+ "r" cpu_to_le32(AT91_DDRSDRC_LPCB_POWER_DOWN),
+ "r" cpu_to_le32(AT91_RSTC_KEY | AT91_RSTC_PERRST | AT91_RSTC_PROCRST)
: "r0");
return NOTIFY_DONE;
@@ -152,14 +152,14 @@ static void __init at91_reset_status(struct platform_device *pdev)
pr_info("AT91: Starting after %s\n", reason);
}
-static struct of_device_id at91_ramc_of_match[] = {
+static const struct of_device_id at91_ramc_of_match[] = {
{ .compatible = "atmel,at91sam9260-sdramc", },
{ .compatible = "atmel,at91sam9g45-ddramc", },
{ .compatible = "atmel,sama5d3-ddramc", },
{ /* sentinel */ }
};
-static struct of_device_id at91_reset_of_match[] = {
+static const struct of_device_id at91_reset_of_match[] = {
{ .compatible = "atmel,at91sam9260-rstc", .data = at91sam9260_restart },
{ .compatible = "atmel,at91sam9g45-rstc", .data = at91sam9g45_restart },
{ /* sentinel */ }
diff --git a/drivers/power/reset/hisi-reboot.c b/drivers/power/reset/hisi-reboot.c
index 5385460e23bb..9ab7f562a83b 100644
--- a/drivers/power/reset/hisi-reboot.c
+++ b/drivers/power/reset/hisi-reboot.c
@@ -64,7 +64,7 @@ static int hisi_reboot_probe(struct platform_device *pdev)
return err;
}
-static struct of_device_id hisi_reboot_of_match[] = {
+static const struct of_device_id hisi_reboot_of_match[] = {
{ .compatible = "hisilicon,sysctrl" },
{}
};
diff --git a/drivers/power/reset/keystone-reset.c b/drivers/power/reset/keystone-reset.c
index faedf16c8111..c70f1bffe038 100644
--- a/drivers/power/reset/keystone-reset.c
+++ b/drivers/power/reset/keystone-reset.c
@@ -70,7 +70,7 @@ static struct notifier_block rsctrl_restart_nb = {
.priority = 128,
};
-static struct of_device_id rsctrl_of_match[] = {
+static const struct of_device_id rsctrl_of_match[] = {
{.compatible = "ti,keystone-reset", },
{},
};
diff --git a/drivers/power/reset/st-poweroff.c b/drivers/power/reset/st-poweroff.c
index 27383de9caa8..a488877a3538 100644
--- a/drivers/power/reset/st-poweroff.c
+++ b/drivers/power/reset/st-poweroff.c
@@ -97,7 +97,7 @@ static struct notifier_block st_restart_nb = {
.priority = 192,
};
-static struct of_device_id st_reset_of_match[] = {
+static const struct of_device_id st_reset_of_match[] = {
{
.compatible = "st,stih415-restart",
.data = (void *)&stih415_reset,
diff --git a/drivers/power/reset/syscon-poweroff.c b/drivers/power/reset/syscon-poweroff.c
new file mode 100644
index 000000000000..5560b0dbc180
--- /dev/null
+++ b/drivers/power/reset/syscon-poweroff.c
@@ -0,0 +1,102 @@
+/*
+ * Generic Syscon Poweroff Driver
+ *
+ * Copyright (c) 2015, National Instruments Corp.
+ * Author: Moritz Fischer <moritz.fischer@ettus.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kallsyms.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/notifier.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/regmap.h>
+
+static struct regmap *map;
+static u32 offset;
+static u32 mask;
+
+void syscon_poweroff(void)
+{
+ /* Issue the poweroff */
+ regmap_write(map, offset, mask);
+
+ mdelay(1000);
+
+ pr_emerg("Unable to poweroff system\n");
+}
+
+static int syscon_poweroff_probe(struct platform_device *pdev)
+{
+ char symname[KSYM_NAME_LEN];
+
+ map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, "regmap");
+ if (IS_ERR(map)) {
+ dev_err(&pdev->dev, "unable to get syscon");
+ return PTR_ERR(map);
+ }
+
+ if (of_property_read_u32(pdev->dev.of_node, "offset", &offset)) {
+ dev_err(&pdev->dev, "unable to read 'offset'");
+ return -EINVAL;
+ }
+
+ if (of_property_read_u32(pdev->dev.of_node, "mask", &mask)) {
+ dev_err(&pdev->dev, "unable to read 'mask'");
+ return -EINVAL;
+ }
+
+ if (pm_power_off) {
+ lookup_symbol_name((ulong)pm_power_off, symname);
+ dev_err(&pdev->dev,
+ "pm_power_off already claimed %p %s",
+ pm_power_off, symname);
+ return -EBUSY;
+ }
+
+ pm_power_off = syscon_poweroff;
+
+ return 0;
+}
+
+static int syscon_poweroff_remove(struct platform_device *pdev)
+{
+ if (pm_power_off == syscon_poweroff)
+ pm_power_off = NULL;
+
+ return 0;
+}
+
+static const struct of_device_id syscon_poweroff_of_match[] = {
+ { .compatible = "syscon-poweroff" },
+ {}
+};
+
+static struct platform_driver syscon_poweroff_driver = {
+ .probe = syscon_poweroff_probe,
+ .remove = syscon_poweroff_remove,
+ .driver = {
+ .name = "syscon-poweroff",
+ .of_match_table = syscon_poweroff_of_match,
+ },
+};
+
+static int __init syscon_poweroff_register(void)
+{
+ return platform_driver_register(&syscon_poweroff_driver);
+}
+device_initcall(syscon_poweroff_register);
diff --git a/drivers/power/reset/syscon-reboot.c b/drivers/power/reset/syscon-reboot.c
index c4049f45663f..d3c7d245ae63 100644
--- a/drivers/power/reset/syscon-reboot.c
+++ b/drivers/power/reset/syscon-reboot.c
@@ -76,7 +76,7 @@ static int syscon_reboot_probe(struct platform_device *pdev)
return err;
}
-static struct of_device_id syscon_reboot_of_match[] = {
+static const struct of_device_id syscon_reboot_of_match[] = {
{ .compatible = "syscon-reboot" },
{}
};
diff --git a/drivers/power/reset/vexpress-poweroff.c b/drivers/power/reset/vexpress-poweroff.c
index be12d9b92957..6a9bf7089373 100644
--- a/drivers/power/reset/vexpress-poweroff.c
+++ b/drivers/power/reset/vexpress-poweroff.c
@@ -80,7 +80,7 @@ DEVICE_ATTR(active, S_IRUGO | S_IWUSR, vexpress_reset_active_show,
enum vexpress_reset_func { FUNC_RESET, FUNC_SHUTDOWN, FUNC_REBOOT };
-static struct of_device_id vexpress_reset_of_match[] = {
+static const struct of_device_id vexpress_reset_of_match[] = {
{
.compatible = "arm,vexpress-reset",
.data = (void *)FUNC_RESET,
diff --git a/drivers/power/reset/xgene-reboot.c b/drivers/power/reset/xgene-reboot.c
index b0e5002f8deb..f07e93c97ba3 100644
--- a/drivers/power/reset/xgene-reboot.c
+++ b/drivers/power/reset/xgene-reboot.c
@@ -87,7 +87,7 @@ static int xgene_reboot_probe(struct platform_device *pdev)
return err;
}
-static struct of_device_id xgene_reboot_of_match[] = {
+static const struct of_device_id xgene_reboot_of_match[] = {
{ .compatible = "apm,xgene-reboot" },
{}
};
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-26 01:45:33 +0100