@@ -94,9 +94,10 @@ static const struct override_status_id override_status_ids[] = {
/*
* The GPD win BIOS dated 20170221 has disabled the accelerometer, the
* drivers sometimes cause crashes under Windows and this is how the
- * manufacturer has solved this :| Note that the the DMI data is less
- * generic then it seems, a board_vendor of "AMI Corporation" is quite
- * rare and a board_name of "Default String" also is rare.
+ * manufacturer has solved this :| The DMI match may not seem unique,
+ * but it is. In the 67000+ DMI decode dumps from linux-hardware.org
+ * only 116 have board_vendor set to "AMI Corporation" and of those 116
+ * only the GPD win and pocket entries' board_name is "Default string".
*
* Unfortunately the GPD pocket also uses these strings and its BIOS
* was copy-pasted from the GPD win, so it has a disabled KIOX000A
@@ -120,6 +121,19 @@ static const struct override_status_id override_status_ids[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
DMI_MATCH(DMI_BIOS_DATE, "05/25/2017")
}),
+
+ /*
+ * The GPD win/pocket have a PCI wifi card, but its DSDT has the SDIO
+ * mmc controller enabled and that has a child-device which _PS3
+ * method sets a GPIO causing the PCI wifi card to turn off.
+ * See above remark about uniqueness of the DMI match.
+ */
+ NOT_PRESENT_ENTRY_PATH("\\_SB_.PCI0.SDHB.BRC1", ATOM_AIRMONT, {
+ DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+ DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
+ DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
+ }),
};
bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status)
The GPD win and its sibling the GPD pocket (99% the same electronics in a different case) use a PCI wifi card. But the ACPI tables on both variants contain a bug where the SDIO MMC controller for SDIO wifi cards is enabled despite this. This SDIO MMC controller has a PCI0.SDHB.BRC1 child-device which _PS3 method sets a GPIO causing the PCI wifi card to turn off. At the moment there is a pretty ugly kludge in the sdhci-acpi.c code, just to work around the bug in the DSDT of this single design. This can be solved cleaner/simply with a quirk overriding the _STA return of the broken PCI0.SDHB.BRC1 PCI0.SDHB.BRC1 child with a status value of 0, so that its power_manageable flag gets cleared, avoiding this problem. Note that even though it is not used, the _STA method for the MMC controller is deliberately not overridden. If the status of the MMC controller were forced to 0 it would never get suspended, which would cause these mini-laptops to not reach S0i3 level when suspended. Signed-off-by: Hans de Goede <hdegoede@redhat.com> --- Changes in v2: - Drop the Fixes: c10383e8ddf4 ("ACPI: scan: Release PM resources blocked by unused objects") tag and related wording in the commit message, since that patch has been reverted for now --- drivers/acpi/x86/utils.c | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-)