From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sinan Kaya Subject: [PATCH V7 2/7] ACPI / bus: Introduce acpi_get_match_data() function Date: Thu, 7 Dec 2017 16:10:26 -0500 Message-ID: <1512681031-11343-3-git-send-email-okaya@codeaurora.org> References: <1512681031-11343-1-git-send-email-okaya@codeaurora.org> Return-path: In-Reply-To: <1512681031-11343-1-git-send-email-okaya@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org To: dmaengine@vger.kernel.org, timur@codeaurora.org, devicetree@vger.kernel.org, linux-acpi@vger.kernel.org, sakari.ailus@linux.intel.com Cc: linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Sinan Kaya , "Rafael J. Wysocki" , Len Brown , open list List-Id: devicetree@vger.kernel.org OF has of_device_get_match_data() function to extract driver specific data structure. Add a similar function for ACPI. Signed-off-by: Sinan Kaya --- drivers/acpi/bus.c | 18 ++++++++++++++++++ include/linux/acpi.h | 6 ++++++ 2 files changed, 24 insertions(+) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 4d0979e..f87ed3b 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -785,6 +785,24 @@ const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids, } EXPORT_SYMBOL_GPL(acpi_match_device); +void *acpi_get_match_data(const struct device *dev) +{ + const struct acpi_device_id *match; + + if (!dev->driver) + return NULL; + + if (!dev->driver->acpi_match_table) + return NULL; + + match = acpi_match_device(dev->driver->acpi_match_table, dev); + if (!match) + return NULL; + + return (void *)match->driver_data; +} +EXPORT_SYMBOL_GPL(acpi_get_match_data); + int acpi_match_device_ids(struct acpi_device *device, const struct acpi_device_id *ids) { diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 502af53..a927260 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -584,6 +584,7 @@ extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *), const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids, const struct device *dev); +void *acpi_get_match_data(const struct device *dev); extern bool acpi_driver_match_device(struct device *dev, const struct device_driver *drv); int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *); @@ -755,6 +756,11 @@ static inline const struct acpi_device_id *acpi_match_device( return NULL; } +static inline void *acpi_get_match_data(const struct device *dev) +{ + return NULL; +} + static inline bool acpi_driver_match_device(struct device *dev, const struct device_driver *drv) { -- 1.9.1