102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
/*
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* Copyright (C) 2008 Google, Inc.
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* Author: Nick Pelly <npelly@google.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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/* Control bluetooth power for trout platform */
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#include <linux/platform_device.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/rfkill.h>
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#include <linux/delay.h>
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#include <asm/gpio.h>
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#include "board-trout.h"
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static struct rfkill *bt_rfk;
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static const char bt_name[] = "brf6300";
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static int bluetooth_set_power(void *data, bool blocked)
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{
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if (!blocked) {
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gpio_set_value(TROUT_GPIO_BT_32K_EN, 1);
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udelay(10);
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gpio_direction_output(101, 1);
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} else {
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gpio_direction_output(101, 0);
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gpio_set_value(TROUT_GPIO_BT_32K_EN, 0);
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}
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return 0;
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}
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static struct rfkill_ops trout_rfkill_ops = {
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.set_block = bluetooth_set_power,
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};
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static int trout_rfkill_probe(struct platform_device *pdev)
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{
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int rc = 0;
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bool default_state = true; /* off */
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bluetooth_set_power(NULL, default_state);
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bt_rfk = rfkill_alloc(bt_name, &pdev->dev, RFKILL_TYPE_BLUETOOTH,
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&trout_rfkill_ops, NULL);
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if (!bt_rfk)
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return -ENOMEM;
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rfkill_set_states(bt_rfk, default_state, false);
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/* userspace cannot take exclusive control */
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rc = rfkill_register(bt_rfk);
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if (rc)
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rfkill_destroy(bt_rfk);
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return rc;
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}
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static int trout_rfkill_remove(struct platform_device *dev)
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{
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rfkill_unregister(bt_rfk);
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rfkill_destroy(bt_rfk);
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return 0;
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}
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static struct platform_driver trout_rfkill_driver = {
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.probe = trout_rfkill_probe,
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.remove = trout_rfkill_remove,
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.driver = {
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.name = "trout_rfkill",
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.owner = THIS_MODULE,
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},
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};
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static int __init trout_rfkill_init(void)
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{
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return platform_driver_register(&trout_rfkill_driver);
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}
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static void __exit trout_rfkill_exit(void)
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{
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platform_driver_unregister(&trout_rfkill_driver);
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}
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module_init(trout_rfkill_init);
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module_exit(trout_rfkill_exit);
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MODULE_DESCRIPTION("trout rfkill");
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MODULE_AUTHOR("Nick Pelly <npelly@google.com>");
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MODULE_LICENSE("GPL");
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