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 bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
32 struct ath_softc *sc = (struct ath_softc *)common->priv;
33 struct platform_device *pdev = to_platform_device(sc->dev);
34 struct ath9k_platform_data *pdata;
36 pdata = (struct ath9k_platform_data *) pdev->dev.platform_data;
37 if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
38 ath_print(common, ATH_DBG_FATAL,
39 "%s: flash read failed, offset %08x "
45 *data = pdata->eeprom_data[off];
49 static struct ath_bus_ops ath_ahb_bus_ops = {
50 .ath_bus_type = ATH_AHB,
51 .read_cachesize = ath_ahb_read_cachesize,
52 .eeprom_read = ath_ahb_eeprom_read,
55 static int ath_ahb_probe(struct platform_device *pdev)
58 struct ath_wiphy *aphy;
60 struct ieee80211_hw *hw;
67 if (!pdev->dev.platform_data) {
68 dev_err(&pdev->dev, "no platform data specified\n");
73 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
75 dev_err(&pdev->dev, "no memory resource found\n");
80 mem = ioremap_nocache(res->start, res->end - res->start + 1);
82 dev_err(&pdev->dev, "ioremap failed\n");
87 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
89 dev_err(&pdev->dev, "no IRQ resource found\n");
96 hw = ieee80211_alloc_hw(sizeof(struct ath_wiphy) +
97 sizeof(struct ath_softc), &ath9k_ops);
99 dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
104 SET_IEEE80211_DEV(hw, &pdev->dev);
105 platform_set_drvdata(pdev, hw);
108 sc = (struct ath_softc *) (aphy + 1);
111 sc->pri_wiphy = aphy;
113 sc->dev = &pdev->dev;
117 /* Will be cleared in ath9k_start() */
118 sc->sc_flags |= SC_OP_INVALID;
120 ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
122 dev_err(&pdev->dev, "request_irq failed\n");
126 ret = ath9k_init_device(AR5416_AR9100_DEVID, sc, 0x0, &ath_ahb_bus_ops);
128 dev_err(&pdev->dev, "failed to initialize device\n");
133 ath9k_hw_name(ah, hw_name, sizeof(hw_name));
134 wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
135 hw_name, (unsigned long)mem, irq);
142 ieee80211_free_hw(hw);
143 platform_set_drvdata(pdev, NULL);
150 static int ath_ahb_remove(struct platform_device *pdev)
152 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
155 struct ath_wiphy *aphy = hw->priv;
156 struct ath_softc *sc = aphy->sc;
157 void __iomem *mem = sc->mem;
159 ath9k_deinit_device(sc);
160 free_irq(sc->irq, sc);
161 ieee80211_free_hw(sc->hw);
163 platform_set_drvdata(pdev, NULL);
169 static struct platform_driver ath_ahb_driver = {
170 .probe = ath_ahb_probe,
171 .remove = ath_ahb_remove,
174 .owner = THIS_MODULE,
178 int ath_ahb_init(void)
180 return platform_driver_register(&ath_ahb_driver);
183 void ath_ahb_exit(void)
185 platform_driver_unregister(&ath_ahb_driver);