2
* Copyright (c) 2008-2009 Atheros Communications Inc.
3
* Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org>
4
* Copyright (c) 2009 Imre Kaloz <kaloz@openwrt.org>
6
* Permission to use, copy, modify, and/or distribute this software for any
7
* purpose with or without fee is hereby granted, provided that the above
8
* copyright notice and this permission notice appear in all copies.
10
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19
#include <linux/nl80211.h>
20
#include <linux/platform_device.h>
21
#include <linux/ath9k_platform.h>
24
/* return bus cachesize in 4B word units */
25
static void ath_ahb_read_cachesize(struct ath_common *common, int *csz)
27
*csz = L1_CACHE_BYTES >> 2;
30
static void ath_ahb_cleanup(struct ath_common *common)
32
struct ath_softc *sc = (struct ath_softc *)common->priv;
36
static bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
38
struct ath_softc *sc = (struct ath_softc *)common->priv;
39
struct platform_device *pdev = to_platform_device(sc->dev);
40
struct ath9k_platform_data *pdata;
42
pdata = (struct ath9k_platform_data *) pdev->dev.platform_data;
43
if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
44
ath_print(common, ATH_DBG_FATAL,
45
"%s: flash read failed, offset %08x "
51
*data = pdata->eeprom_data[off];
55
static struct ath_bus_ops ath_ahb_bus_ops = {
56
.read_cachesize = ath_ahb_read_cachesize,
57
.cleanup = ath_ahb_cleanup,
59
.eeprom_read = ath_ahb_eeprom_read,
62
static int ath_ahb_probe(struct platform_device *pdev)
65
struct ath_wiphy *aphy;
67
struct ieee80211_hw *hw;
74
if (!pdev->dev.platform_data) {
75
dev_err(&pdev->dev, "no platform data specified\n");
80
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
82
dev_err(&pdev->dev, "no memory resource found\n");
87
mem = ioremap_nocache(res->start, res->end - res->start + 1);
89
dev_err(&pdev->dev, "ioremap failed\n");
94
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
96
dev_err(&pdev->dev, "no IRQ resource found\n");
103
hw = ieee80211_alloc_hw(sizeof(struct ath_wiphy) +
104
sizeof(struct ath_softc), &ath9k_ops);
106
dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
111
SET_IEEE80211_DEV(hw, &pdev->dev);
112
platform_set_drvdata(pdev, hw);
115
sc = (struct ath_softc *) (aphy + 1);
118
sc->pri_wiphy = aphy;
120
sc->dev = &pdev->dev;
124
ret = ath_init_device(AR5416_AR9100_DEVID, sc, 0x0, &ath_ahb_bus_ops);
126
dev_err(&pdev->dev, "failed to initialize device\n");
130
ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
132
dev_err(&pdev->dev, "request_irq failed\n");
137
ath9k_hw_name(ah, hw_name, sizeof(hw_name));
139
"%s: %s mem=0x%lx, irq=%d\n",
140
wiphy_name(hw->wiphy),
142
(unsigned long)mem, irq);
149
ieee80211_free_hw(hw);
150
platform_set_drvdata(pdev, NULL);
157
static int ath_ahb_remove(struct platform_device *pdev)
159
struct ieee80211_hw *hw = platform_get_drvdata(pdev);
162
struct ath_wiphy *aphy = hw->priv;
163
struct ath_softc *sc = aphy->sc;
166
platform_set_drvdata(pdev, NULL);
172
static struct platform_driver ath_ahb_driver = {
173
.probe = ath_ahb_probe,
174
.remove = ath_ahb_remove,
177
.owner = THIS_MODULE,
181
int ath_ahb_init(void)
183
return platform_driver_register(&ath_ahb_driver);
186
void ath_ahb_exit(void)
188
platform_driver_unregister(&ath_ahb_driver);