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-rw-r--r--drivers/bluetooth/hci_bcm.c91
1 files changed, 55 insertions, 36 deletions
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index e4371d0edbcf..79a0ec57d485 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -98,6 +98,8 @@ struct bcm_device {
int (*set_shutdown)(struct bcm_device *, bool);
#ifdef CONFIG_ACPI
acpi_handle btlp, btpu, btpd;
+ int gpio_count;
+ int gpio_int_idx;
#endif
struct clk *clk;
@@ -829,8 +831,11 @@ static int bcm_resource(struct acpi_resource *ares, void *data)
case ACPI_RESOURCE_TYPE_GPIO:
gpio = &ares->data.gpio;
- if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT)
+ if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) {
+ dev->gpio_int_idx = dev->gpio_count;
dev->irq_active_low = gpio->polarity == ACPI_ACTIVE_LOW;
+ }
+ dev->gpio_count++;
break;
case ACPI_RESOURCE_TYPE_SERIAL_BUS:
@@ -948,20 +953,11 @@ static int bcm_acpi_probe(struct bcm_device *dev)
LIST_HEAD(resources);
const struct dmi_system_id *dmi_id;
const struct acpi_gpio_mapping *gpio_mapping = acpi_bcm_int_last_gpios;
- const struct acpi_device_id *id;
struct resource_entry *entry;
int ret;
- /* Retrieve GPIO data */
- id = acpi_match_device(dev->dev->driver->acpi_match_table, dev->dev);
- if (id)
- gpio_mapping = (const struct acpi_gpio_mapping *) id->driver_data;
-
- ret = devm_acpi_dev_add_driver_gpios(dev->dev, gpio_mapping);
- if (ret)
- return ret;
-
/* Retrieve UART ACPI info */
+ dev->gpio_int_idx = -1;
ret = acpi_dev_get_resources(ACPI_COMPANION(dev->dev),
&resources, bcm_resource, dev);
if (ret < 0)
@@ -975,6 +971,29 @@ static int bcm_acpi_probe(struct bcm_device *dev)
}
acpi_dev_free_resource_list(&resources);
+ /* If the DSDT uses an Interrupt resource for the IRQ, then there are
+ * only 2 GPIO resources, we use the irq-last mapping for this, since
+ * we already have an irq the 3th / last mapping will not be used.
+ */
+ if (dev->irq)
+ gpio_mapping = acpi_bcm_int_last_gpios;
+ else if (dev->gpio_int_idx == 0)
+ gpio_mapping = acpi_bcm_int_first_gpios;
+ else if (dev->gpio_int_idx == 2)
+ gpio_mapping = acpi_bcm_int_last_gpios;
+ else
+ dev_warn(dev->dev, "Unexpected ACPI gpio_int_idx: %d\n",
+ dev->gpio_int_idx);
+
+ /* Warn if our expectations are not met. */
+ if (dev->gpio_count != (dev->irq ? 2 : 3))
+ dev_warn(dev->dev, "Unexpected number of ACPI GPIOs: %d\n",
+ dev->gpio_count);
+
+ ret = devm_acpi_dev_add_driver_gpios(dev->dev, gpio_mapping);
+ if (ret)
+ return ret;
+
if (irq_polarity != -1) {
dev->irq_active_low = irq_polarity;
dev_warn(dev->dev, "Overwriting IRQ polarity to active %s by module-param\n",
@@ -1071,31 +1090,31 @@ static const struct hci_uart_proto bcm_proto = {
#ifdef CONFIG_ACPI
static const struct acpi_device_id bcm_acpi_match[] = {
- { "BCM2E1A", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E38", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E39", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E3A", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E3D", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E3F", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E40", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E54", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E55", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E64", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E65", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E67", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E71", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E72", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E74", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E7B", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E7C", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E7E", (kernel_ulong_t)&acpi_bcm_int_first_gpios },
- { "BCM2E83", (kernel_ulong_t)&acpi_bcm_int_first_gpios },
- { "BCM2E84", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E90", (kernel_ulong_t)&acpi_bcm_int_last_gpios },
- { "BCM2E95", (kernel_ulong_t)&acpi_bcm_int_first_gpios },
- { "BCM2E96", (kernel_ulong_t)&acpi_bcm_int_first_gpios },
- { "BCM2EA4", (kernel_ulong_t)&acpi_bcm_int_first_gpios },
- { "BCM2EAA", (kernel_ulong_t)&acpi_bcm_int_first_gpios },
+ { "BCM2E1A" },
+ { "BCM2E38" },
+ { "BCM2E39" },
+ { "BCM2E3A" },
+ { "BCM2E3D" },
+ { "BCM2E3F" },
+ { "BCM2E40" },
+ { "BCM2E54" },
+ { "BCM2E55" },
+ { "BCM2E64" },
+ { "BCM2E65" },
+ { "BCM2E67" },
+ { "BCM2E71" },
+ { "BCM2E72" },
+ { "BCM2E74" },
+ { "BCM2E7B" },
+ { "BCM2E7C" },
+ { "BCM2E7E" },
+ { "BCM2E83" },
+ { "BCM2E84" },
+ { "BCM2E90" },
+ { "BCM2E95" },
+ { "BCM2E96" },
+ { "BCM2EA4" },
+ { "BCM2EAA" },
{ },
};
MODULE_DEVICE_TABLE(acpi, bcm_acpi_match);