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| author | Frederic Danis <frederic.danis@linux.intel.com> | 2015-09-23 18:18:08 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-09-24 16:25:44 +0200 |
| commit | 5cebdfea32b89911d4540440c1c2854a1a3d591e (patch) | |
| tree | 55e2a54e058f1ac22ca59b2498c94b53813db505 /drivers/bluetooth/hci_bcm.c | |
| parent | 594b31ea7dc6101519deee1b31483fce2e1a7414 (diff) | |
| download | linux-5cebdfea32b89911d4540440c1c2854a1a3d591e.tar.gz linux-5cebdfea32b89911d4540440c1c2854a1a3d591e.tar.bz2 linux-5cebdfea32b89911d4540440c1c2854a1a3d591e.zip | |
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/hci_bcm.c')
| -rw-r--r-- | drivers/bluetooth/hci_bcm.c | 25 |
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 |