From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Hans de Goede <hdegoede@redhat.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Ard Biesheuvel <ardb@kernel.org>, Mark Brown <broonie@kernel.org>,
linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-efi@vger.kernel.org, linux-i2c@vger.kernel.org,
linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-spi@vger.kernel.org,
devel@acpica.org
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
Len Brown <lenb@kernel.org>, Elie Morisse <syniurge@gmail.com>,
Nehal Shah <nehal-bakulchandra.shah@amd.com>,
Shyam Sundar S K <shyam-sundar.s-k@amd.com>,
Khalil Blaiech <kblaiech@nvidia.com>,
Andy Gross <agross@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konrad.dybcio@somainline.org>,
Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Daniel Mack <daniel@zonque.org>,
Haojian Zhuang <haojian.zhuang@gmail.com>,
Robert Jarzmik <robert.jarzmik@free.fr>,
Robert Moore <robert.moore@intel.com>,
Wolfram Sang <wsa@kernel.org>
Subject: [PATCH v2 1/8] ACPI: utils: Add acpi_dev_uid_to_integer() helper to get _UID as integer
Date: Thu, 8 Sep 2022 16:29:03 +0300 [thread overview]
Message-ID: <20220908132910.62122-2-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20220908132910.62122-1-andriy.shevchenko@linux.intel.com>
Some users interpret _UID only as integer and for them it's easier to
have an integer representation of _UID. Add respective helper for that.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
---
drivers/acpi/utils.c | 24 ++++++++++++++++++++++++
include/acpi/acpi_bus.h | 1 +
include/linux/acpi.h | 5 +++++
3 files changed, 30 insertions(+)
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index 4acd6f7d1395..2ea14648a661 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -793,6 +793,30 @@ bool acpi_dev_hid_uid_match(struct acpi_device *adev,
}
EXPORT_SYMBOL(acpi_dev_hid_uid_match);
+/**
+ * acpi_dev_uid_to_integer - treat ACPI device _UID as integer
+ * @adev: ACPI device to get _UID from
+ * @integer: output buffer for integer
+ *
+ * Considers _UID as integer and converts it to @integer.
+ *
+ * Returns 0 on success, or negative error code otherwise.
+ */
+int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer)
+{
+ const char *uid;
+
+ if (!adev)
+ return -ENODEV;
+
+ uid = acpi_device_uid(adev);
+ if (!uid)
+ return -ENODATA;
+
+ return kstrtou64(uid, 0, integer);
+}
+EXPORT_SYMBOL(acpi_dev_uid_to_integer);
+
/**
* acpi_dev_found - Detect presence of a given ACPI device in the namespace.
* @hid: Hardware ID of the device.
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 42f76f2c2d49..1804d7a70918 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -739,6 +739,7 @@ static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
}
bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2);
+int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer);
void acpi_dev_clear_dependencies(struct acpi_device *supplier);
bool acpi_dev_ready_for_enumeration(const struct acpi_device *device);
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index ed4aa395cc49..619b2b1e4fb4 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -799,6 +799,11 @@ acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *u
return false;
}
+static inline int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer)
+{
+ return -ENODEV;
+}
+
static inline struct acpi_device *
acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv)
{
--
2.35.1
next prev parent reply other threads:[~2022-09-08 13:29 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-08 13:29 [PATCH v2 0/8] ACPI: unify _UID handling as integer Andy Shevchenko
2022-09-08 13:29 ` Andy Shevchenko [this message]
2022-09-08 13:29 ` [PATCH v2 2/8] ACPI: LPSS: Refactor _UID handling to use acpi_dev_uid_to_integer() Andy Shevchenko
2022-09-08 13:29 ` [PATCH v2 3/8] ACPI: x86: " Andy Shevchenko
2022-09-08 13:29 ` [PATCH v2 4/8] i2c: amd-mp2-plat: " Andy Shevchenko
2022-09-12 20:49 ` Wolfram Sang
2022-09-08 13:29 ` [PATCH v2 5/8] i2c: mlxbf: " Andy Shevchenko
2022-09-12 20:49 ` Wolfram Sang
2022-09-08 13:29 ` [PATCH v2 6/8] perf: qcom_l2_pmu: " Andy Shevchenko
2022-09-09 4:40 ` kernel test robot
2022-09-09 8:44 ` Andy Shevchenko
2022-09-08 13:29 ` [PATCH v2 7/8] spi: pxa2xx: " Andy Shevchenko
2022-09-13 1:00 ` kernel test robot
2022-09-08 13:29 ` [PATCH v2 8/8] efi/dev-path-parser: " Andy Shevchenko
2022-09-08 13:42 ` Hans de Goede
2022-09-08 13:37 ` [PATCH v2 0/8] ACPI: unify _UID handling as integer Andy Shevchenko
2022-09-10 16:32 ` Rafael J. Wysocki
2022-09-12 10:39 ` Andy Shevchenko
2022-09-13 16:32 ` Andy Shevchenko
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