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Bluetooth: hci_bcm: Fix setting of irq trigger type 

This commit fixes 2 issues with host-wake irq trigger type handling
in hci_bcm:

1) bcm_setup_sleep sets sleep_params.host_wake_active based on
bcm_device.irq_polarity, but bcm_request_irq was always requesting
IRQF_TRIGGER_RISING as trigger type independent of irq_polarity.

This was a problem when the irq is described as a GpioInt rather then
an Interrupt in the DSDT as for GpioInt-s the value passed to request_irq
is honored. This commit fixes this by requesting the correct trigger
type depending on bcm_device.irq_polarity.

2) bcm_device.irq_polarity was used to directly store an ACPI polarity
value (ACPI_ACTIVE_*). This is undesirable because hci_bcm is also
used with device-tree and checking for something like ACPI_ACTIVE_LOW
in a non ACPI specific function like bcm_request_irq feels wrong.

This commit fixes this by renaming irq_polarity to irq_active_low
and changing its type to a bool.

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 2017-10-04 20:43:36 +02:00 committed by Marcel Holtmann
parent 7841d55480
commit 227630cccd
1 changed files with 10 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/bluetooth/hci_bcm.c
View File

@ -68,7 +68,7 @@ struct bcm_device {
u32 init_speed;
u32 oper_speed;
int irq;
u8 irq_polarity;
bool irq_active_low;
#ifdef CONFIG_PM
struct hci_uart *hu;
@ -213,7 +213,9 @@ static int bcm_request_irq(struct bcm_data *bcm)
}
err = devm_request_irq(&bdev->pdev->dev, bdev->irq, bcm_host_wake,
IRQF_TRIGGER_RISING, "host_wake", bdev);
bdev->irq_active_low ? IRQF_TRIGGER_FALLING :
IRQF_TRIGGER_RISING,
"host_wake", bdev);
if (err)
goto unlock;
@ -253,7 +255,7 @@ static int bcm_setup_sleep(struct hci_uart *hu)
struct sk_buff *skb;
struct bcm_set_sleep_mode sleep_params = default_sleep_params;
sleep_params.host_wake_active = !bcm->dev->irq_polarity;
sleep_params.host_wake_active = !bcm->dev->irq_active_low;
skb = __hci_cmd_sync(hu->hdev, 0xfc27, sizeof(sleep_params),
&sleep_params, HCI_INIT_TIMEOUT);
@ -690,10 +692,8 @@ static const struct acpi_gpio_mapping acpi_bcm_int_first_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[] = {
static const struct dmi_system_id bcm_active_low_irq_dmi_table[] = {
{
.ident = "Asus T100TA",
.matches = {
@ -701,7 +701,6 @@ static const struct dmi_system_id bcm_wrong_irq_dmi_table[] = {
"ASUSTeK COMPUTER INC."),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TA"),
},
.driver_data = &acpi_active_low,
},
{
.ident = "Asus T100CHI",
@ -710,7 +709,6 @@ static const struct dmi_system_id bcm_wrong_irq_dmi_table[] = {
"ASUSTeK COMPUTER INC."),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100CHI"),
},
.driver_data = &acpi_active_low,
},
{ /* Handle ThinkPad 8 tablets with BCM2E55 chipset ACPI ID */
.ident = "Lenovo ThinkPad 8",
@ -718,7 +716,6 @@ static const struct dmi_system_id bcm_wrong_irq_dmi_table[] = {
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "ThinkPad 8"),
},
.driver_data = &acpi_active_low,
},
{ }
};
@ -733,13 +730,13 @@ 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_polarity = irq->polarity;
dev->irq_active_low = irq->polarity == ACPI_ACTIVE_LOW;
break;
case ACPI_RESOURCE_TYPE_GPIO:
gpio = &ares->data.gpio;
if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT)
dev->irq_polarity = gpio->polarity;
dev->irq_active_low = gpio->polarity == ACPI_ACTIVE_LOW;
break;
case ACPI_RESOURCE_TYPE_SERIAL_BUS:
@ -834,11 +831,11 @@ static int bcm_acpi_probe(struct bcm_device *dev)
return ret;
acpi_dev_free_resource_list(&resources);
dmi_id = dmi_first_match(bcm_wrong_irq_dmi_table);
dmi_id = dmi_first_match(bcm_active_low_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;
dev->irq_active_low = true;
}
return 0;