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ACPI: utils: Introduce acpi_dev_get_first_match_name()

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Sometimes the user wants to have device name of the match rather than
just checking if device present or not. To make life easier for such
users introduce acpi_dev_get_first_match_name() helper based on code
for acpi_dev_present().

For example, GPIO driver for Intel Merrifield needs to know the device
name of pin control to be able to apply GPIO mapping table to the proper
device.

To be more consistent with the purpose rename

  struct acpi_dev_present_info  -> struct acpi_dev_match_info
  acpi_dev_present_cb()         -> acpi_dev_match_cb()

in the utils.c file.

Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Andy Shevchenko
2018-01-05 18:09:33 +02:00
committed by Rafael J. Wysocki
parent b2cd1df660
commit 67dcf8a3e0
3 changed files with 43 additions and 7 deletions
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6
include/linux/acpi.h
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@@ -640,6 +640,12 @@ static inline bool acpi_dev_present(const char *hid, const char *uid, s64 hrv)
return false;
}
static inline const char *
acpi_dev_get_first_match_name(const char *hid, const char *uid, s64 hrv)
{
return NULL;
}
static inline bool is_acpi_node(struct fwnode_handle *fwnode)
{
return false;