c1c6b14b22
I only did superficial review, but these constants are stupid to have and without proper warnings nobody will review the code anyway, no amount of shouting will help. Also fix wimax to use correct states. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
151 lines
2.9 KiB
C
151 lines
2.9 KiB
C
/*
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* Bluetooth built-in chip control
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*
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* Copyright (c) 2008 Dmitry Baryshkov
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/delay.h>
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#include <linux/rfkill.h>
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#include <mach/tosa_bt.h>
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static void tosa_bt_on(struct tosa_bt_data *data)
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{
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gpio_set_value(data->gpio_reset, 0);
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gpio_set_value(data->gpio_pwr, 1);
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gpio_set_value(data->gpio_reset, 1);
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mdelay(20);
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gpio_set_value(data->gpio_reset, 0);
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}
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static void tosa_bt_off(struct tosa_bt_data *data)
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{
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gpio_set_value(data->gpio_reset, 1);
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mdelay(10);
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gpio_set_value(data->gpio_pwr, 0);
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gpio_set_value(data->gpio_reset, 0);
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}
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static int tosa_bt_toggle_radio(void *data, enum rfkill_state state)
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{
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pr_info("BT_RADIO going: %s\n",
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state == RFKILL_STATE_UNBLOCKED ? "on" : "off");
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if (state == RFKILL_STATE_UNBLOCKED) {
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pr_info("TOSA_BT: going ON\n");
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tosa_bt_on(data);
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} else {
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pr_info("TOSA_BT: going OFF\n");
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tosa_bt_off(data);
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}
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return 0;
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}
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static int tosa_bt_probe(struct platform_device *dev)
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{
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int rc;
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struct rfkill *rfk;
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struct tosa_bt_data *data = dev->dev.platform_data;
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rc = gpio_request(data->gpio_reset, "Bluetooth reset");
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if (rc)
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goto err_reset;
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rc = gpio_direction_output(data->gpio_reset, 0);
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if (rc)
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goto err_reset_dir;
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rc = gpio_request(data->gpio_pwr, "Bluetooth power");
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if (rc)
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goto err_pwr;
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rc = gpio_direction_output(data->gpio_pwr, 0);
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if (rc)
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goto err_pwr_dir;
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rfk = rfkill_allocate(&dev->dev, RFKILL_TYPE_BLUETOOTH);
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if (!rfk) {
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rc = -ENOMEM;
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goto err_rfk_alloc;
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}
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rfk->name = "tosa-bt";
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rfk->toggle_radio = tosa_bt_toggle_radio;
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rfk->data = data;
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#ifdef CONFIG_RFKILL_LEDS
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rfk->led_trigger.name = "tosa-bt";
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#endif
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rc = rfkill_register(rfk);
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if (rc)
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goto err_rfkill;
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platform_set_drvdata(dev, rfk);
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return 0;
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err_rfkill:
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if (rfk)
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rfkill_free(rfk);
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rfk = NULL;
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err_rfk_alloc:
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tosa_bt_off(data);
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err_pwr_dir:
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gpio_free(data->gpio_pwr);
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err_pwr:
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err_reset_dir:
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gpio_free(data->gpio_reset);
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err_reset:
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return rc;
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}
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static int __devexit tosa_bt_remove(struct platform_device *dev)
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{
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struct tosa_bt_data *data = dev->dev.platform_data;
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struct rfkill *rfk = platform_get_drvdata(dev);
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platform_set_drvdata(dev, NULL);
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if (rfk)
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rfkill_unregister(rfk);
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rfk = NULL;
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tosa_bt_off(data);
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gpio_free(data->gpio_pwr);
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gpio_free(data->gpio_reset);
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return 0;
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}
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static struct platform_driver tosa_bt_driver = {
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.probe = tosa_bt_probe,
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.remove = __devexit_p(tosa_bt_remove),
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.driver = {
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.name = "tosa-bt",
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.owner = THIS_MODULE,
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},
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};
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static int __init tosa_bt_init(void)
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{
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return platform_driver_register(&tosa_bt_driver);
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}
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static void __exit tosa_bt_exit(void)
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{
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platform_driver_unregister(&tosa_bt_driver);
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}
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module_init(tosa_bt_init);
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module_exit(tosa_bt_exit);
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