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Bluetooth: hci_bcm: Add irq_polarity module option

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Add irq_polarity module option for easier troubleshooting of irq-polarity
issues.

Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Hans de Goede 2018-03-16 21:28:07 +01:00 committed by Marcel Holtmann
parent a41e079639
commit e09070c51b
1 changed files with 15 additions and 5 deletions
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20
drivers/bluetooth/hci_bcm.c
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@ -126,6 +126,10 @@ struct bcm_data {
static DEFINE_MUTEX(bcm_device_lock);
static LIST_HEAD(bcm_device_list);
static int irq_polarity = -1;
module_param(irq_polarity, int, 0444);
MODULE_PARM_DESC(irq_polarity, "IRQ polarity 0: active-high 1: active-low");
static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed)
{
if (hu->serdev)
@ -989,11 +993,17 @@ static int bcm_acpi_probe(struct bcm_device *dev)
}
acpi_dev_free_resource_list(&resources);
dmi_id = dmi_first_match(bcm_active_low_irq_dmi_table);
if (dmi_id) {
dev_warn(dev->dev, "%s: Overwriting IRQ polarity to active low",
dmi_id->ident);
dev->irq_active_low = true;
if (irq_polarity != -1) {
dev->irq_active_low = irq_polarity;
dev_warn(dev->dev, "Overwriting IRQ polarity to active %s by module-param\n",
dev->irq_active_low ? "low" : "high");
} else {
dmi_id = dmi_first_match(bcm_active_low_irq_dmi_table);
if (dmi_id) {
dev_warn(dev->dev, "%s: Overwriting IRQ polarity to active low",
dmi_id->ident);
dev->irq_active_low = true;
}
}
return 0;