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authorAzael Avalos <coproscefalo@gmail.com>2015-03-26 23:56:05 +0300
committerDarren Hart <dvhart@linux.intel.com>2015-03-27 00:15:07 +0300
commitbb2ea96b4840fb244e74ed7c470a3ec88e5b084a (patch)
tree541993e608d7c75f37dd2072063fb22be5acb0eb /drivers/platform
parentfb42d1f491ebf6bb3e41b4dc93c5a1b1768e0df7 (diff)
downloadlinux-bb2ea96b4840fb244e74ed7c470a3ec88e5b084a.tar.xz
toshiba_bluetooth: Add three new functions to the driver
This patch introduces three new functions, which are going to be used by the next patches. The functions introduced are toshiba_bluetooth_present, toshiba_bluetooth_status and toshiba_bluetooth_disable, which queries the presence of the device, queries the status and disables the device respectively. Signed-off-by: Azael Avalos <coproscefalo@gmail.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/x86/toshiba_bluetooth.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/platform/x86/toshiba_bluetooth.c b/drivers/platform/x86/toshiba_bluetooth.c
index 2cb1ea62b4a7..b479a701d3a8 100644
--- a/drivers/platform/x86/toshiba_bluetooth.c
+++ b/drivers/platform/x86/toshiba_bluetooth.c
@@ -57,6 +57,38 @@ static struct acpi_driver toshiba_bt_rfkill_driver = {
.drv.pm = &toshiba_bt_pm,
};
+static int toshiba_bluetooth_present(acpi_handle handle)
+{
+ acpi_status result;
+ u64 bt_present;
+
+ result = acpi_evaluate_integer(handle, "_STA", NULL, &bt_present);
+ if (ACPI_FAILURE(result)) {
+ pr_err("ACPI call to query Bluetooth presence failed");
+ return -ENXIO;
+ } else if (!bt_present) {
+ pr_info("Bluetooth device not present\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int toshiba_bluetooth_status(acpi_handle handle)
+{
+ acpi_status result;
+ u64 status;
+
+ result = acpi_evaluate_integer(handle, "BTST", NULL, &status);
+ if (ACPI_FAILURE(result)) {
+ pr_err("Could not get Bluetooth device status\n");
+ return -ENXIO;
+ }
+
+ pr_info("Bluetooth status %llu\n", status);
+
+ return status;
+}
static int toshiba_bluetooth_enable(acpi_handle handle)
{
@@ -85,6 +117,25 @@ static int toshiba_bluetooth_enable(acpi_handle handle)
return -ENODEV;
}
+static int toshiba_bluetooth_disable(acpi_handle handle)
+{
+ acpi_status result;
+
+ result = acpi_evaluate_object(handle, "BTPF", NULL, NULL);
+ if (ACPI_FAILURE(result)) {
+ pr_err("Could not power OFF Bluetooth device\n");
+ return -ENXIO;
+ }
+
+ result = acpi_evaluate_object(handle, "DUSB", NULL, NULL);
+ if (ACPI_FAILURE(result)) {
+ pr_err("Could not detach USB Bluetooth device\n");
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
static void toshiba_bt_rfkill_notify(struct acpi_device *device, u32 event)
{
toshiba_bluetooth_enable(device->handle);