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/* 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"
void rfkill_switch_all(enum rfkill_type type, enum rfkill_state state);
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, enum rfkill_state state)
{
switch (state) {
case RFKILL_STATE_UNBLOCKED:
sapphire_bt_fastclock_power(1);
gpio_set_value(SAPPHIRE_GPIO_BT_32K_EN, 1);
udelay(10);
gpio_configure(101, GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_HIGH);
break;
case RFKILL_STATE_SOFT_BLOCKED:
gpio_configure(101, GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_LOW);
gpio_set_value(SAPPHIRE_GPIO_BT_32K_EN, 0);
sapphire_bt_fastclock_power(0);
break;
default:
printk(KERN_ERR "bad bluetooth rfkill state %d\n", state);
}
return 0;
}
static int __init sapphire_rfkill_probe(struct platform_device *pdev)
{
int rc = 0;
/* default to bluetooth off */
rfkill_switch_all(RFKILL_TYPE_BLUETOOTH, RFKILL_STATE_SOFT_BLOCKED);
bluetooth_set_power(NULL, RFKILL_STATE_SOFT_BLOCKED);
bt_rfk = rfkill_allocate(&pdev->dev, RFKILL_TYPE_BLUETOOTH);
if (!bt_rfk)
return -ENOMEM;
bt_rfk->name = bt_name;
bt_rfk->state = RFKILL_STATE_SOFT_BLOCKED;
/* userspace cannot take exclusive control */
bt_rfk->user_claim_unsupported = 1;
bt_rfk->user_claim = 0;
bt_rfk->data = NULL; /* user data */
bt_rfk->toggle_radio = bluetooth_set_power;
rc = rfkill_register(bt_rfk);
if (rc)
rfkill_free(bt_rfk);
return rc;
}
static struct platform_driver sapphire_rfkill_driver = {
.probe = sapphire_rfkill_probe,
.driver = {
.name = "sapphire_rfkill",
.owner = THIS_MODULE,
},
};
static int __init sapphire_rfkill_init(void)
{
if (!machine_is_sapphire())
return 0;
return platform_driver_register(&sapphire_rfkill_driver);
}
module_init(sapphire_rfkill_init);
MODULE_DESCRIPTION("sapphire rfkill");
MODULE_AUTHOR("Nick Pelly <npelly@google.com>");
MODULE_LICENSE("GPL");
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