M7350/kernel/arch/arm/mach-msm/board-sapphire-rfkill.c
2024-09-09 08:52:07 +00:00

106 lines
2.6 KiB
C

/* linux/arch/arm/mach-msm/board-sapphire-rfkill.c
* Copyright (C) 2007-2009 HTC Corporation.
* Author: Thomas Tsai <thomas_tsai@htc.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*/
/* Control bluetooth power for sapphire platform */
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/rfkill.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
#include "gpio_chip.h"
#include "board-sapphire.h"
static struct rfkill *bt_rfk;
static const char bt_name[] = "brf6300";
extern int sapphire_bt_fastclock_power(int on);
static int bluetooth_set_power(void *data, bool blocked)
{
if (!blocked) {
sapphire_bt_fastclock_power(1);
gpio_set_value(SAPPHIRE_GPIO_BT_32K_EN, 1);
udelay(10);
gpio_direction_output(101, 1);
} else {
gpio_direction_output(101, 0);
gpio_set_value(SAPPHIRE_GPIO_BT_32K_EN, 0);
sapphire_bt_fastclock_power(0);
}
return 0;
}
static struct rfkill_ops sapphire_rfkill_ops = {
.set_block = bluetooth_set_power,
};
static int sapphire_rfkill_probe(struct platform_device *pdev)
{
int rc = 0;
bool default_state = true; /* off */
bluetooth_set_power(NULL, default_state);
bt_rfk = rfkill_alloc(bt_name, &pdev->dev, RFKILL_TYPE_BLUETOOTH,
&sapphire_rfkill_ops, NULL);
if (!bt_rfk)
return -ENOMEM;
/* userspace cannot take exclusive control */
rfkill_set_states(bt_rfk, default_state, false);
rc = rfkill_register(bt_rfk);
if (rc)
rfkill_destroy(bt_rfk);
return rc;
}
static int sapphire_rfkill_remove(struct platform_device *dev)
{
rfkill_unregister(bt_rfk);
rfkill_destroy(bt_rfk);
return 0;
}
static struct platform_driver sapphire_rfkill_driver = {
.probe = sapphire_rfkill_probe,
.remove = sapphire_rfkill_remove,
.driver = {
.name = "sapphire_rfkill",
.owner = THIS_MODULE,
},
};
static int __init sapphire_rfkill_init(void)
{
return platform_driver_register(&sapphire_rfkill_driver);
}
static void __exit sapphire_rfkill_exit(void)
{
platform_driver_unregister(&sapphire_rfkill_driver);
}
module_init(sapphire_rfkill_init);
module_exit(sapphire_rfkill_exit);
MODULE_DESCRIPTION("sapphire rfkill");
MODULE_AUTHOR("Nick Pelly <npelly@google.com>");
MODULE_LICENSE("GPL");