Bluetooth: hci_intel: Add GPIO ACPI mapping table

In order to make GPIO ACPI library stricter prepare users of
gpiod_get_index() to correctly behave when there no mapping is
provided by firmware.

Here we add explicit mapping between _CRS GpioIo() resources and
their names used in the driver.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c
index fa50999..851bee8 100644 (file)
--- a/drivers/bluetooth/hci_intel.c
+++ b/drivers/bluetooth/hci_intel.c
@@ -1205,9 +1205,19 @@ static const struct dev_pm_ops intel_pm_ops = {
        SET_RUNTIME_PM_OPS(intel_suspend_device, intel_resume_device, NULL)
 };
 
+static const struct acpi_gpio_params reset_gpios = { 0, 0, false };
+static const struct acpi_gpio_params host_wake_gpios = { 1, 0, false };
+
+static const struct acpi_gpio_mapping acpi_hci_intel_gpios[] = {
+       { "reset-gpios", &reset_gpios, 1 },
+       { "host-wake-gpios", &host_wake_gpios, 1 },
+       { },
+};
+
 static int intel_probe(struct platform_device *pdev)
 {
        struct intel_device *idev;
+       int ret;
 
        idev = devm_kzalloc(&pdev->dev, sizeof(*idev), GFP_KERNEL);
        if (!idev)
@@ -1217,6 +1227,10 @@ static int intel_probe(struct platform_device *pdev)
 
        idev->pdev = pdev;
 
+       ret = devm_acpi_dev_add_driver_gpios(&pdev->dev, acpi_hci_intel_gpios);
+       if (ret)
+               dev_dbg(&pdev->dev, "Unable to add GPIO mapping table\n");
+
        idev->reset = devm_gpiod_get(&pdev->dev, "reset", GPIOD_OUT_LOW);
        if (IS_ERR(idev->reset)) {
                dev_err(&pdev->dev, "Unable to retrieve gpio\n");