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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2015-10-23 12:16:41 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2015-10-26 15:25:53 +0100 |
| commit | 98a3be44ffa67b812de7aa7aed9f2331edcfb1a5 (patch) | |
| tree | 81abee7915f98c72abd4063ee7379c9af09b440a /Documentation/acpi/enumeration.txt | |
| parent | 049e6dde7e57f0054fdc49102e7ef4830c698b46 (diff) | |
| download | linux-98a3be44ffa67b812de7aa7aed9f2331edcfb1a5.tar.bz2 | |
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/enumeration.txt')
| -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 |