From: Quan Nguyen <quan@os.amperecomputing.com>
To: Joel Stanley <joel@jms.id.au>, Andrew Jeffery <andrew@aj.id.au>,
Jean Delvare <jdelvare@suse.com>,
Guenter Roeck <linux@roeck-us.net>,
Rob Herring <robh+dt@kernel.org>,
Lee Jones <lee.jones@linaro.org>,
Jonathan Corbet <corbet@lwn.net>,
linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
linux-aspeed@lists.ozlabs.org, openbmc@lists.ozlabs.org,
Mark Brown <broonie@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Derek Kiernan <derek.kiernan@xilinx.com>,
Dragan Cvetic <dragan.cvetic@xilinx.com>,
Arnd Bergmann <arnd@arndb.de>,
Gustavo Pimentel <Gustavo.Pimentel@synopsys.com>
Cc: Open Source Submission <patches@amperecomputing.com>,
"Thang Q . Nguyen" <thang@os.amperecomputing.com>,
Phong Vo <phong@os.amperecomputing.com>,
Quan Nguyen <quan@os.amperecomputing.com>
Subject: [PATCH v6 5/9] regmap: Introduces regmap lock helpers
Date: Fri, 24 Dec 2021 11:13:48 +0700 [thread overview]
Message-ID: <20211224041352.29405-6-quan@os.amperecomputing.com> (raw)
In-Reply-To: <20211224041352.29405-1-quan@os.amperecomputing.com>
This commit introduces regmap_acquire/release_lock() functions and makes
them available for drivers that need atomic access of regmap registers
Signed-off-by: Quan Nguyen <quan@os.amperecomputing.com>
---
Change in v6:
+ First introduced in v6 [Quan]
drivers/base/regmap/regmap.c | 12 ++++++++++++
include/linux/regmap.h | 2 ++
2 files changed, 14 insertions(+)
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 2d74f9f82aa9..36921309725b 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -87,6 +87,18 @@ bool regmap_check_range_table(struct regmap *map, unsigned int reg,
}
EXPORT_SYMBOL_GPL(regmap_check_range_table);
+void regmap_acquire_lock(struct regmap *map)
+{
+ map->lock(map->lock_arg);
+}
+EXPORT_SYMBOL_GPL(regmap_acquire_lock);
+
+void regmap_release_lock(struct regmap *map)
+{
+ map->unlock(map->lock_arg);
+}
+EXPORT_SYMBOL_GPL(regmap_release_lock);
+
bool regmap_writeable(struct regmap *map, unsigned int reg)
{
if (map->max_register && reg > map->max_register)
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 22652e5fbc38..0ed12e6ad4fb 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -1194,6 +1194,8 @@ int regmap_async_complete(struct regmap *map);
bool regmap_can_raw_write(struct regmap *map);
size_t regmap_get_raw_read_max(struct regmap *map);
size_t regmap_get_raw_write_max(struct regmap *map);
+void regmap_acquire_lock(struct regmap *map);
+void regmap_release_lock(struct regmap *map);
int regcache_sync(struct regmap *map);
int regcache_sync_region(struct regmap *map, unsigned int min,
--
2.28.0
next prev parent reply other threads:[~2021-12-24 4:20 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-24 4:13 [PATCH v6 0/9] Add Ampere's Altra SMPro MFD and its child drivers Quan Nguyen
2021-12-24 4:13 ` [PATCH v6 1/9] dt-bindings: mfd: Add bindings for Ampere Altra SMPro MFD driver Quan Nguyen
2021-12-24 4:13 ` [PATCH v6 2/9] mfd: smpro-mfd: Adds Ampere's Altra SMpro " Quan Nguyen
2022-02-08 9:12 ` Lee Jones
2022-03-07 8:31 ` Quan Nguyen
2021-12-24 4:13 ` [PATCH v6 3/9] hwmon: smpro: Add Ampere's Altra smpro-hwmon driver Quan Nguyen
2021-12-24 4:13 ` [PATCH v6 4/9] docs: hwmon: (smpro-hwmon) Add documentation Quan Nguyen
2021-12-24 4:13 ` Quan Nguyen [this message]
2021-12-24 13:19 ` [PATCH v6 5/9] regmap: Introduces regmap lock helpers Mark Brown
2022-03-07 8:31 ` Quan Nguyen
2021-12-24 4:13 ` [PATCH v6 6/9] misc: smpro-errmon: Add Ampere's SMpro error monitor driver Quan Nguyen
2021-12-24 8:32 ` Greg Kroah-Hartman
2022-03-07 8:32 ` Quan Nguyen
2021-12-24 13:28 ` Mark Brown
2022-03-07 8:30 ` Quan Nguyen
2021-12-29 10:16 ` Lee Jones
2022-03-07 8:31 ` Quan Nguyen
2021-12-24 4:13 ` [PATCH v6 7/9] docs: misc-devices: (smpro-errmon) Add documentation Quan Nguyen
2021-12-24 4:13 ` [PATCH v6 8/9] misc: smpro-misc: Add Ampere's Altra SMpro misc driver Quan Nguyen
2021-12-29 10:18 ` Lee Jones
2022-03-07 8:32 ` Quan Nguyen
2022-03-07 13:16 ` Arnd Bergmann
2021-12-24 4:13 ` [PATCH v6 9/9] docs: misc-devices: (smpro-misc) Add documentation Quan Nguyen
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