rt2x00soc.c
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/*
Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
Copyright (C) 2004 - 2009 Felix Fietkau <nbd@openwrt.org>
<http://rt2x00.serialmonkey.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/*
Module: rt2x00soc
Abstract: rt2x00 generic soc device routines.
*/
#include <linux/bug.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include "rt2x00.h"
#include "rt2x00soc.h"
static void rt2x00soc_free_reg(struct rt2x00_dev *rt2x00dev)
{
kfree(rt2x00dev->rf);
rt2x00dev->rf = NULL;
kfree(rt2x00dev->eeprom);
rt2x00dev->eeprom = NULL;
iounmap(rt2x00dev->csr.base);
}
static int rt2x00soc_alloc_reg(struct rt2x00_dev *rt2x00dev)
{
struct platform_device *pdev = to_platform_device(rt2x00dev->dev);
struct resource *res;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -ENODEV;
rt2x00dev->csr.base = ioremap(res->start, resource_size(res));
if (!rt2x00dev->csr.base)
return -ENOMEM;
rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL);
if (!rt2x00dev->eeprom)
goto exit;
rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL);
if (!rt2x00dev->rf)
goto exit;
return 0;
exit:
rt2x00_probe_err("Failed to allocate registers\n");
rt2x00soc_free_reg(rt2x00dev);
return -ENOMEM;
}
int rt2x00soc_probe(struct platform_device *pdev, const struct rt2x00_ops *ops)
{
struct ieee80211_hw *hw;
struct rt2x00_dev *rt2x00dev;
int retval;
hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw);
if (!hw) {
rt2x00_probe_err("Failed to allocate hardware\n");
return -ENOMEM;
}
platform_set_drvdata(pdev, hw);
rt2x00dev = hw->priv;
rt2x00dev->dev = &pdev->dev;
rt2x00dev->ops = ops;
rt2x00dev->hw = hw;
rt2x00dev->irq = platform_get_irq(pdev, 0);
rt2x00dev->name = pdev->dev.driver->name;
rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC);
retval = rt2x00soc_alloc_reg(rt2x00dev);
if (retval)
goto exit_free_device;
retval = rt2x00lib_probe_dev(rt2x00dev);
if (retval)
goto exit_free_reg;
return 0;
exit_free_reg:
rt2x00soc_free_reg(rt2x00dev);
exit_free_device:
ieee80211_free_hw(hw);
return retval;
}
EXPORT_SYMBOL_GPL(rt2x00soc_probe);
int rt2x00soc_remove(struct platform_device *pdev)
{
struct ieee80211_hw *hw = platform_get_drvdata(pdev);
struct rt2x00_dev *rt2x00dev = hw->priv;
/*
* Free all allocated data.
*/
rt2x00lib_remove_dev(rt2x00dev);
rt2x00soc_free_reg(rt2x00dev);
ieee80211_free_hw(hw);
return 0;
}
EXPORT_SYMBOL_GPL(rt2x00soc_remove);
#ifdef CONFIG_PM
int rt2x00soc_suspend(struct platform_device *pdev, pm_message_t state)
{
struct ieee80211_hw *hw = platform_get_drvdata(pdev);
struct rt2x00_dev *rt2x00dev = hw->priv;
return rt2x00lib_suspend(rt2x00dev, state);
}
EXPORT_SYMBOL_GPL(rt2x00soc_suspend);
int rt2x00soc_resume(struct platform_device *pdev)
{
struct ieee80211_hw *hw = platform_get_drvdata(pdev);
struct rt2x00_dev *rt2x00dev = hw->priv;
return rt2x00lib_resume(rt2x00dev);
}
EXPORT_SYMBOL_GPL(rt2x00soc_resume);
#endif /* CONFIG_PM */
/*
* rt2x00soc module information.
*/
MODULE_AUTHOR(DRV_PROJECT);
MODULE_VERSION(DRV_VERSION);
MODULE_DESCRIPTION("rt2x00 soc library");
MODULE_LICENSE("GPL");