diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2018-03-16 21:28:08 +0100 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2018-04-01 14:25:31 +0200 |
| commit | bb5208b314c5127b716b2ee4f55803a8bb73b750 (patch) | |
| tree | ca71cf1e81ebc4d6c90c5ae54987158886cd4e2a | |
| parent | e09070c51b280567695022237e57c428e548b355 (diff) | |
| download | lwn-bb5208b314c5127b716b2ee4f55803a8bb73b750.tar.gz lwn-bb5208b314c5127b716b2ee4f55803a8bb73b750.zip | |
Bluetooth: hci_bcm: Treat Interrupt ACPI resources as always being active-low
Older devices with a serdev attached bcm bt hci, use an Interrupt ACPI
resource to describe the IRQ (rather then a GpioInt resource).
These device seem to all claim the IRQ is active-high and seem to all need
a DMI quirk to treat it as active-low. Instead simply always assume that
Interrupt resource specified IRQs are always active-low.
This fixes the bt device not being able to wake the host from runtime-
suspend on the: Asus T100TAM, Asus T200TA, Lenovo Yoga2 and the Toshiba
Encore, without the need to add 4 new DMI quirks for these models.
This also allows us to remove 2 DMI quirks for the Asus T100TA and Asus
T100CHI series. Likely the 2 remaining quirks can also be removed but I
could not find a DSDT of these devices to verify this.
Cc: stable@vger.kernel.org
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=198953
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1554835
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
| -rw-r--r-- | drivers/bluetooth/hci_bcm.c | 20 |
1 files changed, 3 insertions, 17 deletions
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c index 50c8523f8653..ce8c629c0eac 100644 --- a/drivers/bluetooth/hci_bcm.c +++ b/drivers/bluetooth/hci_bcm.c @@ -799,22 +799,6 @@ static const struct acpi_gpio_mapping acpi_bcm_int_first_gpios[] = { #ifdef CONFIG_ACPI /* IRQ polarity of some chipsets are not defined correctly in ACPI table. */ static const struct dmi_system_id bcm_active_low_irq_dmi_table[] = { - { - .ident = "Asus T100TA", - .matches = { - DMI_EXACT_MATCH(DMI_SYS_VENDOR, - "ASUSTeK COMPUTER INC."), - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TA"), - }, - }, - { - .ident = "Asus T100CHI", - .matches = { - DMI_EXACT_MATCH(DMI_SYS_VENDOR, - "ASUSTeK COMPUTER INC."), - DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100CHI"), - }, - }, { /* Handle ThinkPad 8 tablets with BCM2E55 chipset ACPI ID */ .ident = "Lenovo ThinkPad 8", .matches = { @@ -842,7 +826,9 @@ static int bcm_resource(struct acpi_resource *ares, void *data) switch (ares->type) { case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: irq = &ares->data.extended_irq; - dev->irq_active_low = irq->polarity == ACPI_ACTIVE_LOW; + if (irq->polarity != ACPI_ACTIVE_LOW) + dev_info(dev->dev, "ACPI Interrupt resource is active-high, this is usually wrong, treating the IRQ as active-low\n"); + dev->irq_active_low = true; break; case ACPI_RESOURCE_TYPE_GPIO: |