2 * Copyright (c) 2008 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_softc *sc, int *csz)
27 *csz = L1_CACHE_BYTES >> 2;
30 static void ath_ahb_cleanup(struct ath_softc *sc)
35 static bool ath_ahb_eeprom_read(struct ath_hw *ah, u32 off, u16 *data)
37 struct ath_softc *sc = ah->ah_sc;
38 struct platform_device *pdev = to_platform_device(sc->dev);
39 struct ath9k_platform_data *pdata;
41 pdata = (struct ath9k_platform_data *) pdev->dev.platform_data;
42 if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
43 DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
44 "%s: flash read failed, offset %08x is out of range\n",
49 *data = pdata->eeprom_data[off];
53 static struct ath_bus_ops ath_ahb_bus_ops = {
54 .read_cachesize = ath_ahb_read_cachesize,
55 .cleanup = ath_ahb_cleanup,
57 .eeprom_read = ath_ahb_eeprom_read,
60 static int ath_ahb_probe(struct platform_device *pdev)
63 struct ath_wiphy *aphy;
65 struct ieee80211_hw *hw;
71 if (!pdev->dev.platform_data) {
72 dev_err(&pdev->dev, "no platform data specified\n");
77 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
79 dev_err(&pdev->dev, "no memory resource found\n");
84 mem = ioremap_nocache(res->start, res->end - res->start + 1);
86 dev_err(&pdev->dev, "ioremap failed\n");
91 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
93 dev_err(&pdev->dev, "no IRQ resource found\n");
100 hw = ieee80211_alloc_hw(sizeof(struct ath_wiphy) +
101 sizeof(struct ath_softc), &ath9k_ops);
103 dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
108 SET_IEEE80211_DEV(hw, &pdev->dev);
109 platform_set_drvdata(pdev, hw);
112 sc = (struct ath_softc *) (aphy + 1);
115 sc->pri_wiphy = aphy;
117 sc->dev = &pdev->dev;
119 sc->bus_ops = &ath_ahb_bus_ops;
122 ret = ath_attach(AR5416_AR9100_DEVID, sc);
124 dev_err(&pdev->dev, "failed to attach device, err=%d\n", ret);
129 ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
131 dev_err(&pdev->dev, "request_irq failed, err=%d\n", ret);
138 "%s: Atheros AR%s MAC/BB Rev:%x, "
139 "AR%s RF Rev:%x, mem=0x%lx, irq=%d\n",
140 wiphy_name(hw->wiphy),
141 ath_mac_bb_name(ah->hw_version.macVersion),
142 ah->hw_version.macRev,
143 ath_rf_name((ah->hw_version.analog5GhzRev & AR_RADIO_SREV_MAJOR)),
144 ah->hw_version.phyRev,
145 (unsigned long)mem, irq);
152 ieee80211_free_hw(hw);
153 platform_set_drvdata(pdev, NULL);
160 static int ath_ahb_remove(struct platform_device *pdev)
162 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
165 struct ath_wiphy *aphy = hw->priv;
166 struct ath_softc *sc = aphy->sc;
169 platform_set_drvdata(pdev, NULL);
175 static struct platform_driver ath_ahb_driver = {
176 .probe = ath_ahb_probe,
177 .remove = ath_ahb_remove,
180 .owner = THIS_MODULE,
184 int ath_ahb_init(void)
186 return platform_driver_register(&ath_ahb_driver);
189 void ath_ahb_exit(void)
191 platform_driver_unregister(&ath_ahb_driver);