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authorFrederic Danis <frederic.danis@linux.intel.com>2015-09-23 18:18:08 +0200
committerMarcel Holtmann <marcel@holtmann.org>2015-09-24 16:25:44 +0200
commit5cebdfea32b89911d4540440c1c2854a1a3d591e (patch)
tree55e2a54e058f1ac22ca59b2498c94b53813db505 /drivers/bluetooth
parent594b31ea7dc6101519deee1b31483fce2e1a7414 (diff)
downloadlinux-5cebdfea32b89911d4540440c1c2854a1a3d591e.tar.bz2
Bluetooth: hci_bcm: Fix IRQ polarity for T100
ACPI table for BCM2E39 of T100TA is not correct. Set correct irq_polarity for this device. Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth')
-rw-r--r--drivers/bluetooth/hci_bcm.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index f30654149c63..2cb50898d667 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -32,6 +32,7 @@
#include <linux/gpio/consumer.h>
#include <linux/tty.h>
#include <linux/interrupt.h>
+#include <linux/dmi.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
@@ -513,6 +514,22 @@ static const struct acpi_gpio_mapping acpi_bcm_default_gpios[] = {
};
#ifdef CONFIG_ACPI
+static u8 acpi_active_low = ACPI_ACTIVE_LOW;
+
+/* IRQ polarity of some chipsets are not defined correctly in ACPI table. */
+static const struct dmi_system_id bcm_wrong_irq_dmi_table[] = {
+ {
+ .ident = "Asus T100TA",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR,
+ "ASUSTeK COMPUTER INC."),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TA"),
+ },
+ .driver_data = &acpi_active_low,
+ },
+ { }
+};
+
static int bcm_resource(struct acpi_resource *ares, void *data)
{
struct bcm_device *dev = data;
@@ -552,6 +569,7 @@ static int bcm_acpi_probe(struct bcm_device *dev)
const struct acpi_device_id *id;
struct acpi_device *adev;
LIST_HEAD(resources);
+ const struct dmi_system_id *dmi_id;
int ret;
id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev);
@@ -608,6 +626,13 @@ static int bcm_acpi_probe(struct bcm_device *dev)
acpi_dev_get_resources(adev, &resources, bcm_resource, dev);
+ dmi_id = dmi_first_match(bcm_wrong_irq_dmi_table);
+ if (dmi_id) {
+ bt_dev_warn(dev, "%s: Overwriting IRQ polarity to active low",
+ dmi_id->ident);
+ dev->irq_polarity = *(u8 *)dmi_id->driver_data;
+ }
+
return 0;
}
#else