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ACPI: Allow drivers to match using Device Tree compatible property

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We have lots of existing Device Tree enabled drivers and allocating
separate _HID for each is not feasible. Instead we allocate special _HID
"PRP0001" that means that the match should be done using Device Tree
compatible property using driver's .of_match_table instead if the driver
is missing .acpi_match_table.

If there is a need to distinguish from where the device is enumerated
(DT/ACPI) driver can check dev->of_node or ACPI_COMPATION(dev).

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Mika Westerberg 2014-10-21 13:33:56 +02:00 • committed by Rafael J. Wysocki
parent b31384fa5d
commit 733e625139
4 changed files with 136 additions and 16 deletions
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8
include/linux/acpi.h
View file

@ -424,12 +424,8 @@ 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);
static inline bool acpi_driver_match_device(struct device *dev,
const struct device_driver *drv)
{
return !!acpi_match_device(drv->acpi_match_table, 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 *);
int acpi_device_modalias(struct device *, char *, int);