From bb5208b314c5127b716b2ee4f55803a8bb73b750 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Fri, 16 Mar 2018 21:28:08 +0100 Subject: 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 Signed-off-by: Marcel Holtmann --- drivers/bluetooth/hci_bcm.c | 20 +++----------------- 1 file changed, 3 insertions(+), 17 deletions(-) (limited to 'drivers/bluetooth') 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: -- cgit v1.2.1