2 * Copyright (c) 2008-2011 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>
22 #include <linux/module.h>
25 static const struct platform_device_id ath9k_platform_id_table[] = {
28 .driver_data = AR5416_AR9100_DEVID,
31 .name = "ar933x_wmac",
32 .driver_data = AR9300_DEVID_AR9330,
35 .name = "ar934x_wmac",
36 .driver_data = AR9300_DEVID_AR9340,
39 .name = "qca955x_wmac",
40 .driver_data = AR9300_DEVID_QCA955X,
43 .name = "qca953x_wmac",
44 .driver_data = AR9300_DEVID_AR953X,
47 .name = "qca956x_wmac",
48 .driver_data = AR9300_DEVID_QCA956X,
53 /* return bus cachesize in 4B word units */
54 static void ath_ahb_read_cachesize(struct ath_common *common, int *csz)
56 *csz = L1_CACHE_BYTES >> 2;
59 static bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
61 struct ath_softc *sc = (struct ath_softc *)common->priv;
62 struct platform_device *pdev = to_platform_device(sc->dev);
63 struct ath9k_platform_data *pdata;
65 pdata = dev_get_platdata(&pdev->dev);
66 if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
68 "%s: flash read failed, offset %08x is out of range\n",
73 *data = pdata->eeprom_data[off];
77 static struct ath_bus_ops ath_ahb_bus_ops = {
78 .ath_bus_type = ATH_AHB,
79 .read_cachesize = ath_ahb_read_cachesize,
80 .eeprom_read = ath_ahb_eeprom_read,
83 static int ath_ahb_probe(struct platform_device *pdev)
87 struct ieee80211_hw *hw;
89 const struct platform_device_id *id = platform_get_device_id(pdev);
95 if (!dev_get_platdata(&pdev->dev)) {
96 dev_err(&pdev->dev, "no platform data specified\n");
100 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
102 dev_err(&pdev->dev, "no memory resource found\n");
106 mem = devm_ioremap_nocache(&pdev->dev, res->start, resource_size(res));
108 dev_err(&pdev->dev, "ioremap failed\n");
112 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
114 dev_err(&pdev->dev, "no IRQ resource found\n");
120 ath9k_fill_chanctx_ops();
121 hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
123 dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
127 SET_IEEE80211_DEV(hw, &pdev->dev);
128 platform_set_drvdata(pdev, hw);
132 sc->dev = &pdev->dev;
136 ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
138 dev_err(&pdev->dev, "request_irq failed\n");
142 ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops);
144 dev_err(&pdev->dev, "failed to initialize device\n");
149 ath9k_hw_name(ah, hw_name, sizeof(hw_name));
150 wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
151 hw_name, (unsigned long)mem, irq);
158 ieee80211_free_hw(hw);
162 static int ath_ahb_remove(struct platform_device *pdev)
164 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
167 struct ath_softc *sc = hw->priv;
169 ath9k_deinit_device(sc);
170 free_irq(sc->irq, sc);
171 ieee80211_free_hw(sc->hw);
177 static struct platform_driver ath_ahb_driver = {
178 .probe = ath_ahb_probe,
179 .remove = ath_ahb_remove,
183 .id_table = ath9k_platform_id_table,
186 MODULE_DEVICE_TABLE(platform, ath9k_platform_id_table);
188 int ath_ahb_init(void)
190 return platform_driver_register(&ath_ahb_driver);
193 void ath_ahb_exit(void)
195 platform_driver_unregister(&ath_ahb_driver);