Initial Contribution
msm-2.6.38: tag AU_LINUX_ANDROID_GINGERBREAD.02.03.04.00.142
Signed-off-by: Bryan Huntsman <bryanh@codeaurora.org>
diff --git a/drivers/bluetooth/bluetooth-power.c b/drivers/bluetooth/bluetooth-power.c
new file mode 100644
index 0000000..3bf49d1
--- /dev/null
+++ b/drivers/bluetooth/bluetooth-power.c
@@ -0,0 +1,138 @@
+/* Copyright (c) 2009-2010, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+/*
+ * Bluetooth Power Switch Module
+ * controls power to external Bluetooth device
+ * with interface to power management device
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/rfkill.h>
+
+static bool previous;
+
+static int bluetooth_toggle_radio(void *data, bool blocked)
+{
+ int ret = 0;
+ int (*power_control)(int enable);
+
+ power_control = data;
+ if (previous != blocked)
+ ret = (*power_control)(!blocked);
+ if (!ret)
+ previous = blocked;
+ return ret;
+}
+
+static const struct rfkill_ops bluetooth_power_rfkill_ops = {
+ .set_block = bluetooth_toggle_radio,
+};
+
+static int bluetooth_power_rfkill_probe(struct platform_device *pdev)
+{
+ struct rfkill *rfkill;
+ int ret;
+
+ rfkill = rfkill_alloc("bt_power", &pdev->dev, RFKILL_TYPE_BLUETOOTH,
+ &bluetooth_power_rfkill_ops,
+ pdev->dev.platform_data);
+
+ if (!rfkill) {
+ dev_err(&pdev->dev, "rfkill allocate failed\n");
+ return -ENOMEM;
+ }
+
+ /* force Bluetooth off during init to allow for user control */
+ rfkill_init_sw_state(rfkill, 1);
+ previous = 1;
+
+ ret = rfkill_register(rfkill);
+ if (ret) {
+ dev_err(&pdev->dev, "rfkill register failed=%d\n", ret);
+ rfkill_destroy(rfkill);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, rfkill);
+
+ return 0;
+}
+
+static void bluetooth_power_rfkill_remove(struct platform_device *pdev)
+{
+ struct rfkill *rfkill;
+
+ dev_dbg(&pdev->dev, "%s\n", __func__);
+
+ rfkill = platform_get_drvdata(pdev);
+ if (rfkill)
+ rfkill_unregister(rfkill);
+ rfkill_destroy(rfkill);
+ platform_set_drvdata(pdev, NULL);
+}
+
+static int __devinit bt_power_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ dev_dbg(&pdev->dev, "%s\n", __func__);
+
+ if (!pdev->dev.platform_data) {
+ dev_err(&pdev->dev, "platform data not initialized\n");
+ return -ENOSYS;
+ }
+
+ ret = bluetooth_power_rfkill_probe(pdev);
+
+ return ret;
+}
+
+static int __devexit bt_power_remove(struct platform_device *pdev)
+{
+ dev_dbg(&pdev->dev, "%s\n", __func__);
+
+ bluetooth_power_rfkill_remove(pdev);
+
+ return 0;
+}
+
+static struct platform_driver bt_power_driver = {
+ .probe = bt_power_probe,
+ .remove = __devexit_p(bt_power_remove),
+ .driver = {
+ .name = "bt_power",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init bluetooth_power_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&bt_power_driver);
+ return ret;
+}
+
+static void __exit bluetooth_power_exit(void)
+{
+ platform_driver_unregister(&bt_power_driver);
+}
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("MSM Bluetooth power control driver");
+MODULE_VERSION("1.40");
+
+module_init(bluetooth_power_init);
+module_exit(bluetooth_power_exit);