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-rw-r--r--drivers/regulator/Kconfig10
-rw-r--r--drivers/regulator/Makefile1
-rw-r--r--drivers/regulator/arizona-ldo1.c8
-rw-r--r--drivers/regulator/bd9571mwv-regulator.c5
-rw-r--r--drivers/regulator/core.c19
-rw-r--r--drivers/regulator/db8500-prcmu.c6
-rw-r--r--drivers/regulator/event.c91
-rw-r--r--drivers/regulator/regnl.h13
-rw-r--r--drivers/regulator/stm32-vrefbuf.c6
-rw-r--r--drivers/regulator/uniphier-regulator.c6
-rw-r--r--drivers/regulator/userspace-consumer.c6
-rw-r--r--drivers/regulator/virtual.c6
-rw-r--r--drivers/regulator/wm8350-regulator.c6
13 files changed, 150 insertions, 33 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index f3ec24691378..550145f82726 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -56,6 +56,16 @@ config REGULATOR_USERSPACE_CONSUMER
If unsure, say no.
+config REGULATOR_NETLINK_EVENTS
+ bool "Enable support for receiving regulator events via netlink"
+ depends on NET
+ help
+ Enabling this option allows the kernel to broadcast regulator events using
+ the netlink mechanism. User-space applications can subscribe to these events
+ for real-time updates on various regulator events.
+
+ If unsure, say no.
+
config REGULATOR_88PG86X
tristate "Marvell 88PG86X voltage regulators"
depends on I2C
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index b2b059b5ee56..46fb569e6be8 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -5,6 +5,7 @@
obj-$(CONFIG_REGULATOR) += core.o dummy.o fixed-helper.o helpers.o devres.o irq_helpers.o
+obj-$(CONFIG_REGULATOR_NETLINK_EVENTS) += event.o
obj-$(CONFIG_OF) += of_regulator.o
obj-$(CONFIG_REGULATOR_FIXED_VOLTAGE) += fixed.o
obj-$(CONFIG_REGULATOR_VIRTUAL_CONSUMER) += virtual.o
diff --git a/drivers/regulator/arizona-ldo1.c b/drivers/regulator/arizona-ldo1.c
index b465c0010665..4b54068d4f59 100644
--- a/drivers/regulator/arizona-ldo1.c
+++ b/drivers/regulator/arizona-ldo1.c
@@ -339,14 +339,12 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
return ret;
}
-static int arizona_ldo1_remove(struct platform_device *pdev)
+static void arizona_ldo1_remove(struct platform_device *pdev)
{
struct arizona_ldo1 *ldo1 = platform_get_drvdata(pdev);
if (ldo1->ena_gpiod)
gpiod_put(ldo1->ena_gpiod);
-
- return 0;
}
static int madera_ldo1_probe(struct platform_device *pdev)
@@ -377,7 +375,7 @@ static int madera_ldo1_probe(struct platform_device *pdev)
static struct platform_driver arizona_ldo1_driver = {
.probe = arizona_ldo1_probe,
- .remove = arizona_ldo1_remove,
+ .remove_new = arizona_ldo1_remove,
.driver = {
.name = "arizona-ldo1",
.probe_type = PROBE_FORCE_SYNCHRONOUS,
@@ -386,7 +384,7 @@ static struct platform_driver arizona_ldo1_driver = {
static struct platform_driver madera_ldo1_driver = {
.probe = madera_ldo1_probe,
- .remove = arizona_ldo1_remove,
+ .remove_new = arizona_ldo1_remove,
.driver = {
.name = "madera-ldo1",
.probe_type = PROBE_FORCE_SYNCHRONOUS,
diff --git a/drivers/regulator/bd9571mwv-regulator.c b/drivers/regulator/bd9571mwv-regulator.c
index d469481d8442..c7ceba56e7dc 100644
--- a/drivers/regulator/bd9571mwv-regulator.c
+++ b/drivers/regulator/bd9571mwv-regulator.c
@@ -260,10 +260,9 @@ static const struct dev_pm_ops bd9571mwv_pm = {
SET_SYSTEM_SLEEP_PM_OPS(bd9571mwv_suspend, bd9571mwv_resume)
};
-static int bd9571mwv_regulator_remove(struct platform_device *pdev)
+static void bd9571mwv_regulator_remove(struct platform_device *pdev)
{
device_remove_file(&pdev->dev, &dev_attr_backup_mode);
- return 0;
}
#define DEV_PM_OPS &bd9571mwv_pm
#else
@@ -357,7 +356,7 @@ static struct platform_driver bd9571mwv_regulator_driver = {
.pm = DEV_PM_OPS,
},
.probe = bd9571mwv_regulator_probe,
- .remove = bd9571mwv_regulator_remove,
+ .remove_new = bd9571mwv_regulator_remove,
.id_table = bd9571mwv_regulator_id_table,
};
module_platform_driver(bd9571mwv_regulator_driver);
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 4aa9ec8c22f3..a968dabb48f5 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -33,6 +33,7 @@
#include "dummy.h"
#include "internal.h"
+#include "regnl.h"
static DEFINE_WW_CLASS(regulator_ww_class);
static DEFINE_MUTEX(regulator_nesting_mutex);
@@ -4854,7 +4855,23 @@ static int _notifier_call_chain(struct regulator_dev *rdev,
unsigned long event, void *data)
{
/* call rdev chain first */
- return blocking_notifier_call_chain(&rdev->notifier, event, data);
+ int ret = blocking_notifier_call_chain(&rdev->notifier, event, data);
+
+ if (IS_REACHABLE(CONFIG_REGULATOR_NETLINK_EVENTS)) {
+ struct device *parent = rdev->dev.parent;
+ const char *rname = rdev_get_name(rdev);
+ char name[32];
+
+ /* Avoid duplicate debugfs directory names */
+ if (parent && rname == rdev->desc->name) {
+ snprintf(name, sizeof(name), "%s-%s", dev_name(parent),
+ rname);
+ rname = name;
+ }
+ reg_generate_netlink_event(rname, event);
+ }
+
+ return ret;
}
int _regulator_bulk_get(struct device *dev, int num_consumers,
diff --git a/drivers/regulator/db8500-prcmu.c b/drivers/regulator/db8500-prcmu.c
index 34c5e485d0af..1e2d54da1b9a 100644
--- a/drivers/regulator/db8500-prcmu.c
+++ b/drivers/regulator/db8500-prcmu.c
@@ -469,11 +469,9 @@ static int db8500_regulator_probe(struct platform_device *pdev)
return 0;
}
-static int db8500_regulator_remove(struct platform_device *pdev)
+static void db8500_regulator_remove(struct platform_device *pdev)
{
ux500_regulator_debug_exit();
-
- return 0;
}
static struct platform_driver db8500_regulator_driver = {
@@ -482,7 +480,7 @@ static struct platform_driver db8500_regulator_driver = {
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
.probe = db8500_regulator_probe,
- .remove = db8500_regulator_remove,
+ .remove_new = db8500_regulator_remove,
};
static int __init db8500_regulator_init(void)
diff --git a/drivers/regulator/event.c b/drivers/regulator/event.c
new file mode 100644
index 000000000000..0ec58f306b38
--- /dev/null
+++ b/drivers/regulator/event.c
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Regulator event over netlink
+ *
+ * Author: Naresh Solanki <Naresh.Solanki@9elements.com>
+ */
+
+#include <regulator/regulator.h>
+#include <net/netlink.h>
+#include <net/genetlink.h>
+
+#include "regnl.h"
+
+static unsigned int reg_event_seqnum;
+
+static const struct genl_multicast_group reg_event_mcgrps[] = {
+ { .name = REG_GENL_MCAST_GROUP_NAME, },
+};
+
+static struct genl_family reg_event_genl_family __ro_after_init = {
+ .module = THIS_MODULE,
+ .name = REG_GENL_FAMILY_NAME,
+ .version = REG_GENL_VERSION,
+ .maxattr = REG_GENL_ATTR_MAX,
+ .mcgrps = reg_event_mcgrps,
+ .n_mcgrps = ARRAY_SIZE(reg_event_mcgrps),
+};
+
+int reg_generate_netlink_event(const char *reg_name, u64 event)
+{
+ struct sk_buff *skb;
+ struct nlattr *attr;
+ struct reg_genl_event *edata;
+ void *msg_header;
+ int size;
+
+ /* allocate memory */
+ size = nla_total_size(sizeof(struct reg_genl_event)) +
+ nla_total_size(0);
+
+ skb = genlmsg_new(size, GFP_ATOMIC);
+ if (!skb)
+ return -ENOMEM;
+
+ /* add the genetlink message header */
+ msg_header = genlmsg_put(skb, 0, reg_event_seqnum++,
+ &reg_event_genl_family, 0,
+ REG_GENL_CMD_EVENT);
+ if (!msg_header) {
+ nlmsg_free(skb);
+ return -ENOMEM;
+ }
+
+ /* fill the data */
+ attr = nla_reserve(skb, REG_GENL_ATTR_EVENT, sizeof(struct reg_genl_event));
+ if (!attr) {
+ nlmsg_free(skb);
+ return -EINVAL;
+ }
+
+ edata = nla_data(attr);
+ memset(edata, 0, sizeof(struct reg_genl_event));
+
+ strscpy(edata->reg_name, reg_name, sizeof(edata->reg_name));
+ edata->event = event;
+
+ /* send multicast genetlink message */
+ genlmsg_end(skb, msg_header);
+ size = genlmsg_multicast(&reg_event_genl_family, skb, 0, 0, GFP_ATOMIC);
+
+ return size;
+}
+
+static int __init reg_event_genetlink_init(void)
+{
+ return genl_register_family(&reg_event_genl_family);
+}
+
+static int __init reg_event_init(void)
+{
+ int error;
+
+ /* create genetlink for acpi event */
+ error = reg_event_genetlink_init();
+ if (error)
+ pr_warn("Failed to create genetlink family for reg event\n");
+
+ return 0;
+}
+
+fs_initcall(reg_event_init);
diff --git a/drivers/regulator/regnl.h b/drivers/regulator/regnl.h
new file mode 100644
index 000000000000..bcba16cc05cc
--- /dev/null
+++ b/drivers/regulator/regnl.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Regulator event over netlink
+ *
+ * Author: Naresh Solanki <Naresh.Solanki@9elements.com>
+ */
+
+#ifndef __REGULATOR_EVENT_H
+#define __REGULATOR_EVENT_H
+
+int reg_generate_netlink_event(const char *reg_name, u64 event);
+
+#endif
diff --git a/drivers/regulator/stm32-vrefbuf.c b/drivers/regulator/stm32-vrefbuf.c
index 717144cbe0f9..40855105dd33 100644
--- a/drivers/regulator/stm32-vrefbuf.c
+++ b/drivers/regulator/stm32-vrefbuf.c
@@ -233,7 +233,7 @@ err_pm_stop:
return ret;
}
-static int stm32_vrefbuf_remove(struct platform_device *pdev)
+static void stm32_vrefbuf_remove(struct platform_device *pdev)
{
struct regulator_dev *rdev = platform_get_drvdata(pdev);
struct stm32_vrefbuf *priv = rdev_get_drvdata(rdev);
@@ -244,8 +244,6 @@ static int stm32_vrefbuf_remove(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
pm_runtime_set_suspended(&pdev->dev);
pm_runtime_put_noidle(&pdev->dev);
-
- return 0;
};
static int __maybe_unused stm32_vrefbuf_runtime_suspend(struct device *dev)
@@ -282,7 +280,7 @@ MODULE_DEVICE_TABLE(of, stm32_vrefbuf_of_match);
static struct platform_driver stm32_vrefbuf_driver = {
.probe = stm32_vrefbuf_probe,
- .remove = stm32_vrefbuf_remove,
+ .remove_new = stm32_vrefbuf_remove,
.driver = {
.name = "stm32-vrefbuf",
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
diff --git a/drivers/regulator/uniphier-regulator.c b/drivers/regulator/uniphier-regulator.c
index 1d8304b88bd6..5f868042392f 100644
--- a/drivers/regulator/uniphier-regulator.c
+++ b/drivers/regulator/uniphier-regulator.c
@@ -115,7 +115,7 @@ out_rst_assert:
return ret;
}
-static int uniphier_regulator_remove(struct platform_device *pdev)
+static void uniphier_regulator_remove(struct platform_device *pdev)
{
struct uniphier_regulator_priv *priv = platform_get_drvdata(pdev);
int i;
@@ -124,8 +124,6 @@ static int uniphier_regulator_remove(struct platform_device *pdev)
reset_control_assert(priv->rst[i]);
clk_bulk_disable_unprepare(priv->data->nclks, priv->clk);
-
- return 0;
}
/* USB3 controller data */
@@ -209,7 +207,7 @@ MODULE_DEVICE_TABLE(of, uniphier_regulator_match);
static struct platform_driver uniphier_regulator_driver = {
.probe = uniphier_regulator_probe,
- .remove = uniphier_regulator_remove,
+ .remove_new = uniphier_regulator_remove,
.driver = {
.name = "uniphier-regulator",
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
diff --git a/drivers/regulator/userspace-consumer.c b/drivers/regulator/userspace-consumer.c
index 97f075ed68c9..53d1b9d6f69c 100644
--- a/drivers/regulator/userspace-consumer.c
+++ b/drivers/regulator/userspace-consumer.c
@@ -194,7 +194,7 @@ err_enable:
return ret;
}
-static int regulator_userspace_consumer_remove(struct platform_device *pdev)
+static void regulator_userspace_consumer_remove(struct platform_device *pdev)
{
struct userspace_consumer_data *data = platform_get_drvdata(pdev);
@@ -202,8 +202,6 @@ static int regulator_userspace_consumer_remove(struct platform_device *pdev)
if (data->enabled && !data->no_autoswitch)
regulator_bulk_disable(data->num_supplies, data->supplies);
-
- return 0;
}
static const struct of_device_id regulator_userspace_consumer_of_match[] = {
@@ -213,7 +211,7 @@ static const struct of_device_id regulator_userspace_consumer_of_match[] = {
static struct platform_driver regulator_userspace_consumer_driver = {
.probe = regulator_userspace_consumer_probe,
- .remove = regulator_userspace_consumer_remove,
+ .remove_new = regulator_userspace_consumer_remove,
.driver = {
.name = "reg-userspace-consumer",
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
diff --git a/drivers/regulator/virtual.c b/drivers/regulator/virtual.c
index d5a160efdae6..0a0ee186c6af 100644
--- a/drivers/regulator/virtual.c
+++ b/drivers/regulator/virtual.c
@@ -345,7 +345,7 @@ static int regulator_virtual_probe(struct platform_device *pdev)
return 0;
}
-static int regulator_virtual_remove(struct platform_device *pdev)
+static void regulator_virtual_remove(struct platform_device *pdev)
{
struct virtual_consumer_data *drvdata = platform_get_drvdata(pdev);
@@ -353,13 +353,11 @@ static int regulator_virtual_remove(struct platform_device *pdev)
if (drvdata->enabled)
regulator_disable(drvdata->regulator);
-
- return 0;
}
static struct platform_driver regulator_virtual_consumer_driver = {
.probe = regulator_virtual_probe,
- .remove = regulator_virtual_remove,
+ .remove_new = regulator_virtual_remove,
.driver = {
.name = "reg-virt-consumer",
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
diff --git a/drivers/regulator/wm8350-regulator.c b/drivers/regulator/wm8350-regulator.c
index 1445bafcab40..9939a5d2cbec 100644
--- a/drivers/regulator/wm8350-regulator.c
+++ b/drivers/regulator/wm8350-regulator.c
@@ -1158,14 +1158,12 @@ static int wm8350_regulator_probe(struct platform_device *pdev)
return 0;
}
-static int wm8350_regulator_remove(struct platform_device *pdev)
+static void wm8350_regulator_remove(struct platform_device *pdev)
{
struct regulator_dev *rdev = platform_get_drvdata(pdev);
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
wm8350_free_irq(wm8350, wm8350_reg[pdev->id].irq, rdev);
-
- return 0;
}
int wm8350_register_regulator(struct wm8350 *wm8350, int reg,
@@ -1306,7 +1304,7 @@ EXPORT_SYMBOL_GPL(wm8350_register_led);
static struct platform_driver wm8350_regulator_driver = {
.probe = wm8350_regulator_probe,
- .remove = wm8350_regulator_remove,
+ .remove_new = wm8350_regulator_remove,
.driver = {
.name = "wm8350-regulator",
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-12 17:36:57 +0300