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/*
* 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");
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