Return-Path: From: Frederic Danis To: linux-bluetooth@vger.kernel.org Subject: [PATCH v3 1/3] Bluetooth: hci_bcm: Fix IRQ polarity for T100 Date: Wed, 9 Sep 2015 09:54:44 +0200 Message-Id: <1441785286-5840-2-git-send-email-frederic.danis@linux.intel.com> In-Reply-To: <1441785286-5840-1-git-send-email-frederic.danis@linux.intel.com> References: <1441785286-5840-1-git-send-email-frederic.danis@linux.intel.com> Content-Type: text/plain; charset="utf-8" Sender: linux-bluetooth-owner@vger.kernel.org List-ID: ACPI table for BCM2E39 of T100TA is not correct. Set correct irq_polarity for this device. Signed-off-by: Frederic Danis --- drivers/bluetooth/hci_bcm.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c index f306541..6551251 100644 --- a/drivers/bluetooth/hci_bcm.c +++ b/drivers/bluetooth/hci_bcm.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include @@ -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 +626,12 @@ 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_dbg(dev, "Fix irq polarity"); + dev->irq_polarity = *(u8*)dmi_id->driver_data; + } + return 0; } #else -- 1.9.1