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, write to the
 18	Free Software Foundation, Inc.,
 19	59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 20 */
 21
 22/*
 23	Module: rt2x00soc
 24	Abstract: rt2x00 generic soc device routines.
 25 */
 26
 27#include <linux/bug.h>
 28#include <linux/kernel.h>
 29#include <linux/module.h>
 30#include <linux/platform_device.h>
 31#include <linux/slab.h>
 32
 33#include "rt2x00.h"
 34#include "rt2x00soc.h"
 35
 36static void rt2x00soc_free_reg(struct rt2x00_dev *rt2x00dev)
 37{
 38	kfree(rt2x00dev->rf);
 39	rt2x00dev->rf = NULL;
 40
 41	kfree(rt2x00dev->eeprom);
 42	rt2x00dev->eeprom = NULL;
 43
 44	iounmap(rt2x00dev->csr.base);
 45}
 46
 47static int rt2x00soc_alloc_reg(struct rt2x00_dev *rt2x00dev)
 48{
 49	struct platform_device *pdev = to_platform_device(rt2x00dev->dev);
 50	struct resource *res;
 51
 52	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 53	if (!res)
 54		return -ENODEV;
 55
 56	rt2x00dev->csr.base = ioremap(res->start, resource_size(res));
 57	if (!rt2x00dev->csr.base)
 58		return -ENOMEM;
 59
 60	rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL);
 61	if (!rt2x00dev->eeprom)
 62		goto exit;
 63
 64	rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL);
 65	if (!rt2x00dev->rf)
 66		goto exit;
 67
 68	return 0;
 69
 70exit:
 71	ERROR_PROBE("Failed to allocate registers.\n");
 72	rt2x00soc_free_reg(rt2x00dev);
 73
 74	return -ENOMEM;
 75}
 76
 77int rt2x00soc_probe(struct platform_device *pdev, const struct rt2x00_ops *ops)
 78{
 79	struct ieee80211_hw *hw;
 80	struct rt2x00_dev *rt2x00dev;
 81	int retval;
 82
 83	hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw);
 84	if (!hw) {
 85		ERROR_PROBE("Failed to allocate hardware.\n");
 86		return -ENOMEM;
 87	}
 88
 89	platform_set_drvdata(pdev, hw);
 90
 91	rt2x00dev = hw->priv;
 92	rt2x00dev->dev = &pdev->dev;
 93	rt2x00dev->ops = ops;
 94	rt2x00dev->hw = hw;
 95	rt2x00dev->irq = platform_get_irq(pdev, 0);
 96	rt2x00dev->name = pdev->dev.driver->name;
 97
 98	rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC);
 99
100	retval = rt2x00soc_alloc_reg(rt2x00dev);
101	if (retval)
102		goto exit_free_device;
103
104	retval = rt2x00lib_probe_dev(rt2x00dev);
105	if (retval)
106		goto exit_free_reg;
107
108	return 0;
109
110exit_free_reg:
111	rt2x00soc_free_reg(rt2x00dev);
112
113exit_free_device:
114	ieee80211_free_hw(hw);
115
116	return retval;
117}
118EXPORT_SYMBOL_GPL(rt2x00soc_probe);
119
120int rt2x00soc_remove(struct platform_device *pdev)
121{
122	struct ieee80211_hw *hw = platform_get_drvdata(pdev);
123	struct rt2x00_dev *rt2x00dev = hw->priv;
124
125	/*
126	 * Free all allocated data.
127	 */
128	rt2x00lib_remove_dev(rt2x00dev);
129	rt2x00soc_free_reg(rt2x00dev);
130	ieee80211_free_hw(hw);
131
132	return 0;
133}
134EXPORT_SYMBOL_GPL(rt2x00soc_remove);
135
136#ifdef CONFIG_PM
137int rt2x00soc_suspend(struct platform_device *pdev, pm_message_t state)
138{
139	struct ieee80211_hw *hw = platform_get_drvdata(pdev);
140	struct rt2x00_dev *rt2x00dev = hw->priv;
141
142	return rt2x00lib_suspend(rt2x00dev, state);
143}
144EXPORT_SYMBOL_GPL(rt2x00soc_suspend);
145
146int rt2x00soc_resume(struct platform_device *pdev)
147{
148	struct ieee80211_hw *hw = platform_get_drvdata(pdev);
149	struct rt2x00_dev *rt2x00dev = hw->priv;
150
151	return rt2x00lib_resume(rt2x00dev);
152}
153EXPORT_SYMBOL_GPL(rt2x00soc_resume);
154#endif /* CONFIG_PM */
155
156/*
157 * rt2x00soc module information.
158 */
159MODULE_AUTHOR(DRV_PROJECT);
160MODULE_VERSION(DRV_VERSION);
161MODULE_DESCRIPTION("rt2x00 soc library");
162MODULE_LICENSE("GPL");