summaryrefslogtreecommitdiff
path: root/arch/arm/mach-mx5/mx53_smd_rfkill.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-mx5/mx53_smd_rfkill.c')
-rw-r--r--arch/arm/mach-mx5/mx53_smd_rfkill.c136
1 files changed, 136 insertions, 0 deletions
diff --git a/arch/arm/mach-mx5/mx53_smd_rfkill.c b/arch/arm/mach-mx5/mx53_smd_rfkill.c
new file mode 100644
index 000000000000..f0f95a839381
--- /dev/null
+++ b/arch/arm/mach-mx5/mx53_smd_rfkill.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2011 Freescale Semiconductor, Inc. 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 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/*!
+ * @file mxc_bt_rfkill.c
+ *
+ * @brief This driver is implement a rfkill control interface of bluetooth
+ * chip on i.MX serial boards. Register the power regulator function and
+ * reset function in platform data.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/rfkill.h>
+#include <mach/hardware.h>
+#include <mach/mxc_rfkill.h>
+
+static int mxc_bt_set_block(void *rfkdata, bool blocked)
+{
+ struct mxc_bt_rfkill_platform_data *data = rfkdata;
+ int ret;
+
+ pr_info("rfkill: BT RF going to : %s\n", blocked ? "off" : "on");
+ if (!blocked)
+ ret = data->power_change(1);
+ else
+ ret = data->power_change(0);
+
+ return ret;
+}
+
+static const struct rfkill_ops mxc_bt_rfkill_ops = {
+ .set_block = mxc_bt_set_block,
+};
+
+static int mxc_bt_rfkill_probe(struct platform_device *dev)
+{
+ int rc;
+ struct rfkill *rfk;
+
+ struct mxc_bt_rfkill_platform_data *data = dev->dev.platform_data;
+
+ if (data->power_change == NULL) {
+ rc = -EINVAL;
+ dev_err(&dev->dev, "no power_change function\n");
+ goto error_check_func;
+ }
+
+ rfk = rfkill_alloc("mxc-bt", &dev->dev, RFKILL_TYPE_BLUETOOTH,
+ &mxc_bt_rfkill_ops, data);
+
+ if (!rfk) {
+ rc = -ENOMEM;
+ goto error_rfk_alloc;
+ }
+
+ rfkill_set_led_trigger_name(rfk, "mxc_bt");
+
+ rc = rfkill_register(rfk);
+ if (rc)
+ goto error_rfkill;
+
+ platform_set_drvdata(dev, rfk);
+ printk(KERN_INFO "mxc_bt_rfkill driver success loaded\n");
+ return 0;
+
+error_rfkill:
+ rfkill_destroy(rfk);
+error_rfk_alloc:
+error_check_func:
+ return rc;
+}
+
+static int __devexit mxc_bt_rfkill_remove(struct platform_device *dev)
+{
+ struct mxc_bt_rfkill_platform_data *data = dev->dev.platform_data;
+ struct rfkill *rfk = platform_get_drvdata(dev);
+
+ platform_set_drvdata(dev, NULL);
+
+ if (rfk) {
+ rfkill_unregister(rfk);
+ rfkill_destroy(rfk);
+ }
+
+ data->power_change(0);
+
+ return 0;
+}
+
+static struct platform_driver mxc_bt_rfkill_drv = {
+ .driver = {
+ .name = "mxc_bt_rfkill",
+ },
+
+ .probe = mxc_bt_rfkill_probe,
+ .remove = __devexit_p(mxc_bt_rfkill_remove),
+};
+
+static int __init mxc_bt_rfkill_init(void)
+{
+ return platform_driver_register(&mxc_bt_rfkill_drv);
+}
+
+module_init(mxc_bt_rfkill_init);
+
+static void __exit mxc_bt_rfkill_exit(void)
+{
+ platform_driver_unregister(&mxc_bt_rfkill_drv);
+}
+
+module_exit(mxc_bt_rfkill_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("RFKill control interface of BT on MX53 SMD");