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/*
* Copyright (C) ST-Ericsson SA 2011
*
* License Terms: GNU General Public License v2
* Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
*
* Platform driver implementing access mechanisms to modem
* on U8500 which uses Shared Memroy as IPC between Application
* Processor and Modem processor.
*/
#include <linux/module.h>
#include <linux/modem/modem.h>
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/mfd/dbx500-prcmu.h>
static void u8500_modem_request(struct modem_dev *mdev)
{
prcmu_ac_wake_req();
}
static void u8500_modem_release(struct modem_dev *mdev)
{
prcmu_ac_sleep_req();
}
static int u8500_modem_is_requested(struct modem_dev *mdev)
{
return prcmu_is_ac_wake_requested();
}
static struct modem_ops u8500_modem_ops = {
.request = u8500_modem_request,
.release = u8500_modem_release,
.is_requested = u8500_modem_is_requested,
};
static struct modem_desc u8500_modem_desc = {
.name = "u8500-shrm-modem",
.id = 0,
.ops = &u8500_modem_ops,
.owner = THIS_MODULE,
};
static int __devinit u8500_modem_probe(struct platform_device *pdev)
{
struct modem_dev *mdev;
int err;
mdev = modem_register(&u8500_modem_desc, &pdev->dev,
NULL);
if (IS_ERR(mdev)) {
err = PTR_ERR(mdev);
pr_err("failed to register %s: err %i\n",
u8500_modem_desc.name, err);
}
return 0;
}
static int __devexit u8500_modem_remove(struct platform_device *pdev)
{
return 0;
}
static struct platform_driver u8500_modem_driver = {
.driver = {
.name = "u8500-modem",
.owner = THIS_MODULE,
},
.probe = u8500_modem_probe,
.remove = __devexit_p(u8500_modem_remove),
};
static int __init u8500_modem_init(void)
{
int ret;
ret = platform_driver_register(&u8500_modem_driver);
if (ret < 0) {
printk(KERN_ERR "u8500_modem: platform driver reg failed\n");
return -ENODEV;
}
return 0;
}
static void __exit u8500_modem_exit(void)
{
platform_driver_unregister(&u8500_modem_driver);
}
arch_initcall(u8500_modem_init);
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