1/*
  2	Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
  3	Copyright (C) 2004 - 2009 Felix Fietkau <nbd@openwrt.org>
  4	<http://rt2x00.serialmonkey.com>
  5
  6	This program is free software; you can redistribute it and/or modify
  7	it under the terms of the GNU General Public License as published by
  8	the Free Software Foundation; either version 2 of the License, or
  9	(at your option) any later version.
 10
 11	This program is distributed in the hope that it will be useful,
 12	but WITHOUT ANY WARRANTY; without even the implied warranty of
 13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 14	GNU General Public License for more details.
 15
 16	You should have received a copy of the GNU General Public License
 17	along with this program; if not, see <http://www.gnu.org/licenses/>.
 18 */
 19
 20/*
 21	Module: rt2x00soc
 22	Abstract: rt2x00 generic soc device routines.
 23 */
 24
 25#include <linux/bug.h>
 26#include <linux/kernel.h>
 27#include <linux/module.h>
 28#include <linux/platform_device.h>
 29#include <linux/slab.h>
 30
 31#include "rt2x00.h"
 32#include "rt2x00soc.h"
 33
 34static void rt2x00soc_free_reg(struct rt2x00_dev *rt2x00dev)
 35{
 36	kfree(rt2x00dev->rf);
 37	rt2x00dev->rf = NULL;
 38
 39	kfree(rt2x00dev->eeprom);
 40	rt2x00dev->eeprom = NULL;
 41
 42	iounmap(rt2x00dev->csr.base);
 43}
 44
 45static int rt2x00soc_alloc_reg(struct rt2x00_dev *rt2x00dev)
 46{
 47	struct platform_device *pdev = to_platform_device(rt2x00dev->dev);
 48	struct resource *res;
 49
 50	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 51	if (!res)
 52		return -ENODEV;
 53
 54	rt2x00dev->csr.base = ioremap(res->start, resource_size(res));
 55	if (!rt2x00dev->csr.base)
 56		return -ENOMEM;
 57
 58	rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL);
 59	if (!rt2x00dev->eeprom)
 60		goto exit;
 61
 62	rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL);
 63	if (!rt2x00dev->rf)
 64		goto exit;
 65
 66	return 0;
 67
 68exit:
 69	rt2x00_probe_err("Failed to allocate registers\n");
 70	rt2x00soc_free_reg(rt2x00dev);
 71
 72	return -ENOMEM;
 73}
 74
 75int rt2x00soc_probe(struct platform_device *pdev, const struct rt2x00_ops *ops)
 76{
 77	struct ieee80211_hw *hw;
 78	struct rt2x00_dev *rt2x00dev;
 79	int retval;
 80
 81	hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw);
 82	if (!hw) {
 83		rt2x00_probe_err("Failed to allocate hardware\n");
 84		return -ENOMEM;
 85	}
 86
 87	platform_set_drvdata(pdev, hw);
 88
 89	rt2x00dev = hw->priv;
 90	rt2x00dev->dev = &pdev->dev;
 91	rt2x00dev->ops = ops;
 92	rt2x00dev->hw = hw;
 93	rt2x00dev->irq = platform_get_irq(pdev, 0);
 94	rt2x00dev->name = pdev->dev.driver->name;
 95
 96	rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC);
 97
 98	retval = rt2x00soc_alloc_reg(rt2x00dev);
 99	if (retval)
100		goto exit_free_device;
101
102	retval = rt2x00lib_probe_dev(rt2x00dev);
103	if (retval)
104		goto exit_free_reg;
105
106	return 0;
107
108exit_free_reg:
109	rt2x00soc_free_reg(rt2x00dev);
110
111exit_free_device:
112	ieee80211_free_hw(hw);
113
114	return retval;
115}
116EXPORT_SYMBOL_GPL(rt2x00soc_probe);
117
118int rt2x00soc_remove(struct platform_device *pdev)
119{
120	struct ieee80211_hw *hw = platform_get_drvdata(pdev);
121	struct rt2x00_dev *rt2x00dev = hw->priv;
122
123	/*
124	 * Free all allocated data.
125	 */
126	rt2x00lib_remove_dev(rt2x00dev);
127	rt2x00soc_free_reg(rt2x00dev);
128	ieee80211_free_hw(hw);
129
130	return 0;
131}
132EXPORT_SYMBOL_GPL(rt2x00soc_remove);
133
134#ifdef CONFIG_PM
135int rt2x00soc_suspend(struct platform_device *pdev, pm_message_t state)
136{
137	struct ieee80211_hw *hw = platform_get_drvdata(pdev);
138	struct rt2x00_dev *rt2x00dev = hw->priv;
139
140	return rt2x00lib_suspend(rt2x00dev, state);
141}
142EXPORT_SYMBOL_GPL(rt2x00soc_suspend);
143
144int rt2x00soc_resume(struct platform_device *pdev)
145{
146	struct ieee80211_hw *hw = platform_get_drvdata(pdev);
147	struct rt2x00_dev *rt2x00dev = hw->priv;
148
149	return rt2x00lib_resume(rt2x00dev);
150}
151EXPORT_SYMBOL_GPL(rt2x00soc_resume);
152#endif /* CONFIG_PM */
153
154/*
155 * rt2x00soc module information.
156 */
157MODULE_AUTHOR(DRV_PROJECT);
158MODULE_VERSION(DRV_VERSION);
159MODULE_DESCRIPTION("rt2x00 soc library");
160MODULE_LICENSE("GPL");