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>
24 static const struct platform_device_id ath9k_platform_id_table[] = {
27 .driver_data = AR5416_AR9100_DEVID,
30 .name = "ar933x_wmac",
31 .driver_data = AR9300_DEVID_AR9330,
34 .name = "ar934x_wmac",
35 .driver_data = AR9300_DEVID_AR9340,
40 /* return bus cachesize in 4B word units */
41 static void ath_ahb_read_cachesize(struct ath_common *common, int *csz)
43 *csz = L1_CACHE_BYTES >> 2;
46 static bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
48 struct ath_softc *sc = (struct ath_softc *)common->priv;
49 struct platform_device *pdev = to_platform_device(sc->dev);
50 struct ath9k_platform_data *pdata;
52 pdata = (struct ath9k_platform_data *) pdev->dev.platform_data;
53 if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
55 "%s: flash read failed, offset %08x is out of range\n",
60 *data = pdata->eeprom_data[off];
64 static struct ath_bus_ops ath_ahb_bus_ops = {
65 .ath_bus_type = ATH_AHB,
66 .read_cachesize = ath_ahb_read_cachesize,
67 .eeprom_read = ath_ahb_eeprom_read,
70 static int ath_ahb_probe(struct platform_device *pdev)
74 struct ieee80211_hw *hw;
76 const struct platform_device_id *id = platform_get_device_id(pdev);
82 if (!pdev->dev.platform_data) {
83 dev_err(&pdev->dev, "no platform data specified\n");
88 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
90 dev_err(&pdev->dev, "no memory resource found\n");
95 mem = ioremap_nocache(res->start, resource_size(res));
97 dev_err(&pdev->dev, "ioremap failed\n");
102 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
104 dev_err(&pdev->dev, "no IRQ resource found\n");
111 hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
113 dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
118 SET_IEEE80211_DEV(hw, &pdev->dev);
119 platform_set_drvdata(pdev, hw);
123 sc->dev = &pdev->dev;
127 /* Will be cleared in ath9k_start() */
128 sc->sc_flags |= SC_OP_INVALID;
130 ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
132 dev_err(&pdev->dev, "request_irq failed\n");
136 ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops);
138 dev_err(&pdev->dev, "failed to initialize device\n");
143 ath9k_hw_name(ah, hw_name, sizeof(hw_name));
144 wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
145 hw_name, (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_softc *sc = hw->priv;
166 void __iomem *mem = sc->mem;
168 ath9k_deinit_device(sc);
169 free_irq(sc->irq, sc);
170 ieee80211_free_hw(sc->hw);
172 platform_set_drvdata(pdev, NULL);
178 static struct platform_driver ath_ahb_driver = {
179 .probe = ath_ahb_probe,
180 .remove = ath_ahb_remove,
183 .owner = THIS_MODULE,
185 .id_table = ath9k_platform_id_table,
188 MODULE_DEVICE_TABLE(platform, ath9k_platform_id_table);
190 int ath_ahb_init(void)
192 return platform_driver_register(&ath_ahb_driver);
195 void ath_ahb_exit(void)
197 platform_driver_unregister(&ath_ahb_driver);