1 files changed, 121 insertions, 0 deletions

diff --git a/drivers/misc/wl127x-rfkill.c b/drivers/misc/wl127x-rfkill.c
new file mode 100644
index 00000000000..f5b95152948
--- /dev/null
+++ b/drivers/misc/wl127x-rfkill.c
@@ -0,0 +1,121 @@
+/*
+ * Bluetooth TI wl127x rfkill power control via GPIO
+ *
+ * Copyright (C) 2009 Motorola, Inc.
+ * Copyright (C) 2008 Texas Instruments
+ * Initial code: Pavan Savoy <pavan.savoy@gmail.com> (wl127x_power.c)
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  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.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/rfkill.h>
+#include <linux/platform_device.h>
+#include <linux/wl127x-rfkill.h>
+
+static int wl127x_rfkill_set_power(void *data, enum rfkill_state state)
+{
+        int nshutdown_gpio = (int) data;
+
+        switch (state) {
+        case RFKILL_STATE_UNBLOCKED:
+                gpio_set_value(nshutdown_gpio, 1);
+                break;
+        case RFKILL_STATE_SOFT_BLOCKED:
+                gpio_set_value(nshutdown_gpio, 0);
+                break;
+        default:
+                printk(KERN_ERR "invalid bluetooth rfkill state %d\n", state);
+        }
+        return 0;
+}
+
+static int wl127x_rfkill_probe(struct platform_device *pdev)
+{
+        int rc = 0;
+        struct wl127x_rfkill_platform_data *pdata = pdev->dev.platform_data;
+        enum rfkill_state default_state = RFKILL_STATE_SOFT_BLOCKED;  /* off */
+
+        rc = gpio_request(pdata->nshutdown_gpio, "wl127x_nshutdown_gpio");
+        if (unlikely(rc))
+                return rc;
+
+        rc = gpio_direction_output(pdata->nshutdown_gpio, 0);
+        if (unlikely(rc))
+                return rc;
+
+        rfkill_set_default(RFKILL_TYPE_BLUETOOTH, default_state);
+        wl127x_rfkill_set_power(NULL, default_state);
+
+        pdata->rfkill = rfkill_allocate(&pdev->dev, RFKILL_TYPE_BLUETOOTH);
+        if (unlikely(!pdata->rfkill))
+                return -ENOMEM;
+
+        pdata->rfkill->name = "wl127x";
+        pdata->rfkill->state = default_state;
+        /* userspace cannot take exclusive control */
+        pdata->rfkill->user_claim_unsupported = 1;
+        pdata->rfkill->user_claim = 0;
+        pdata->rfkill->data = (void *) pdata->nshutdown_gpio;
+        pdata->rfkill->toggle_radio = wl127x_rfkill_set_power;
+
+        rc = rfkill_register(pdata->rfkill);
+
+        if (unlikely(rc))
+                rfkill_free(pdata->rfkill);
+
+        return 0;
+}
+
+static int wl127x_rfkill_remove(struct platform_device *pdev)
+{
+        struct wl127x_rfkill_platform_data *pdata = pdev->dev.platform_data;
+
+        rfkill_unregister(pdata->rfkill);
+        rfkill_free(pdata->rfkill);
+        gpio_free(pdata->nshutdown_gpio);
+
+        return 0;
+}
+
+static struct platform_driver wl127x_rfkill_platform_driver = {
+        .probe = wl127x_rfkill_probe,
+        .remove = wl127x_rfkill_remove,
+        .driver = {
+                   .name = "wl127x-rfkill",
+                   .owner = THIS_MODULE,
+                   },
+};
+
+static int __init wl127x_rfkill_init(void)
+{
+        return platform_driver_register(&wl127x_rfkill_platform_driver);
+}
+
+static void __exit wl127x_rfkill_exit(void)
+{
+        platform_driver_unregister(&wl127x_rfkill_platform_driver);
+}
+
+module_init(wl127x_rfkill_init);
+module_exit(wl127x_rfkill_exit);
+
+MODULE_ALIAS("platform:wl127x");
+MODULE_DESCRIPTION("wl127x-rfkill");
+MODULE_AUTHOR("Motorola");
+MODULE_LICENSE("GPL");