diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2015-10-23 12:16:41 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2015-10-23 21:55:46 +0200 |
| commit | 62a615e083604d291af0cb18f9b4549531ea4f94 (patch) | |
| tree | fd95add623a005ee8fc54073c4c1656ecc3139b6 /Documentation/acpi | |
| parent | 6a62974b667f3976ec44e255bed31746cca1ff51 (diff) | |
| download | lwn-62a615e083604d291af0cb18f9b4549531ea4f94.tar.gz lwn-62a615e083604d291af0cb18f9b4549531ea4f94.zip | |
mfd: core: redo ACPI matching of the children devices
There is at least one board on the market, i.e. Intel Galileo Gen2, that uses
_ADR to distinguish the devices under one actual device. Due to this we have to
improve the quirk in the MFD core to handle that board.
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'Documentation/acpi')
| -rw-r--r-- | Documentation/acpi/enumeration.txt | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/Documentation/acpi/enumeration.txt b/Documentation/acpi/enumeration.txt index b731b292e812..a91ec5af52df 100644 --- a/Documentation/acpi/enumeration.txt +++ b/Documentation/acpi/enumeration.txt @@ -347,13 +347,18 @@ For the first case, the MFD drivers do not need to do anything. The resulting child platform device will have its ACPI_COMPANION() set to point to the parent device. -If the ACPI namespace has a device that we can match using an ACPI id, -the id should be set like: +If the ACPI namespace has a device that we can match using an ACPI id or ACPI +adr, the cell should be set like: + + static struct mfd_cell_acpi_match my_subdevice_cell_acpi_match = { + .pnpid = "XYZ0001", + .adr = 0, + }; static struct mfd_cell my_subdevice_cell = { .name = "my_subdevice", /* set the resources relative to the parent */ - .acpi_pnpid = "XYZ0001", + .acpi_match = &my_subdevice_cell_acpi_match, }; The ACPI id "XYZ0001" is then used to lookup an ACPI device directly under |