mirror of
https://github.com/torvalds/linux.git
synced 2024-11-07 20:51:47 +00:00
9754c8ef1f
Use module_platform_driver for drivers whose init and exit functions
only register and unregister, respectively.
A simplified version of the Coccinelle semantic patch that performs
this transformation is as follows:
@a@
identifier f, x;
@@
-static f(...) { return platform_driver_register(&x); }
@b depends on a@
identifier e, a.x;
@@
-static e(...) { platform_driver_unregister(&x); }
@c depends on a && b@
identifier a.f;
declarer name module_init;
@@
-module_init(f);
@d depends on a && b && c@
identifier b.e, a.x;
declarer name module_exit;
declarer name module_platform_driver;
@@
-module_exit(e);
+module_platform_driver(x);
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
135 lines
2.6 KiB
C
135 lines
2.6 KiB
C
/*
|
|
* Bluetooth built-in chip control
|
|
*
|
|
* Copyright (c) 2008 Dmitry Baryshkov
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/rfkill.h>
|
|
|
|
#include <mach/tosa_bt.h>
|
|
|
|
static void tosa_bt_on(struct tosa_bt_data *data)
|
|
{
|
|
gpio_set_value(data->gpio_reset, 0);
|
|
gpio_set_value(data->gpio_pwr, 1);
|
|
gpio_set_value(data->gpio_reset, 1);
|
|
mdelay(20);
|
|
gpio_set_value(data->gpio_reset, 0);
|
|
}
|
|
|
|
static void tosa_bt_off(struct tosa_bt_data *data)
|
|
{
|
|
gpio_set_value(data->gpio_reset, 1);
|
|
mdelay(10);
|
|
gpio_set_value(data->gpio_pwr, 0);
|
|
gpio_set_value(data->gpio_reset, 0);
|
|
}
|
|
|
|
static int tosa_bt_set_block(void *data, bool blocked)
|
|
{
|
|
pr_info("BT_RADIO going: %s\n", blocked ? "off" : "on");
|
|
|
|
if (!blocked) {
|
|
pr_info("TOSA_BT: going ON\n");
|
|
tosa_bt_on(data);
|
|
} else {
|
|
pr_info("TOSA_BT: going OFF\n");
|
|
tosa_bt_off(data);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct rfkill_ops tosa_bt_rfkill_ops = {
|
|
.set_block = tosa_bt_set_block,
|
|
};
|
|
|
|
static int tosa_bt_probe(struct platform_device *dev)
|
|
{
|
|
int rc;
|
|
struct rfkill *rfk;
|
|
|
|
struct tosa_bt_data *data = dev->dev.platform_data;
|
|
|
|
rc = gpio_request(data->gpio_reset, "Bluetooth reset");
|
|
if (rc)
|
|
goto err_reset;
|
|
rc = gpio_direction_output(data->gpio_reset, 0);
|
|
if (rc)
|
|
goto err_reset_dir;
|
|
rc = gpio_request(data->gpio_pwr, "Bluetooth power");
|
|
if (rc)
|
|
goto err_pwr;
|
|
rc = gpio_direction_output(data->gpio_pwr, 0);
|
|
if (rc)
|
|
goto err_pwr_dir;
|
|
|
|
rfk = rfkill_alloc("tosa-bt", &dev->dev, RFKILL_TYPE_BLUETOOTH,
|
|
&tosa_bt_rfkill_ops, data);
|
|
if (!rfk) {
|
|
rc = -ENOMEM;
|
|
goto err_rfk_alloc;
|
|
}
|
|
|
|
rc = rfkill_register(rfk);
|
|
if (rc)
|
|
goto err_rfkill;
|
|
|
|
platform_set_drvdata(dev, rfk);
|
|
|
|
return 0;
|
|
|
|
err_rfkill:
|
|
rfkill_destroy(rfk);
|
|
err_rfk_alloc:
|
|
tosa_bt_off(data);
|
|
err_pwr_dir:
|
|
gpio_free(data->gpio_pwr);
|
|
err_pwr:
|
|
err_reset_dir:
|
|
gpio_free(data->gpio_reset);
|
|
err_reset:
|
|
return rc;
|
|
}
|
|
|
|
static int tosa_bt_remove(struct platform_device *dev)
|
|
{
|
|
struct tosa_bt_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);
|
|
}
|
|
rfk = NULL;
|
|
|
|
tosa_bt_off(data);
|
|
|
|
gpio_free(data->gpio_pwr);
|
|
gpio_free(data->gpio_reset);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver tosa_bt_driver = {
|
|
.probe = tosa_bt_probe,
|
|
.remove = tosa_bt_remove,
|
|
|
|
.driver = {
|
|
.name = "tosa-bt",
|
|
},
|
|
};
|
|
module_platform_driver(tosa_bt_driver);
|