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1/*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>5 *6 * Permission to use, copy, modify, and/or distribute this software for any7 * purpose with or without fee is hereby granted, provided that the above8 * copyright notice and this permission notice appear in all copies.9 *10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.17 */18 19#include <linux/nl80211.h>20#include <linux/platform_device.h>21#include <linux/module.h>22#include <linux/mod_devicetable.h>23#include "ath9k.h"24 25static const struct platform_device_id ath9k_platform_id_table[] = {26 {27 .name = "ath9k",28 .driver_data = AR5416_AR9100_DEVID,29 },30 {31 .name = "ar933x_wmac",32 .driver_data = AR9300_DEVID_AR9330,33 },34 {35 .name = "ar934x_wmac",36 .driver_data = AR9300_DEVID_AR9340,37 },38 {39 .name = "qca955x_wmac",40 .driver_data = AR9300_DEVID_QCA955X,41 },42 {43 .name = "qca953x_wmac",44 .driver_data = AR9300_DEVID_AR953X,45 },46 {47 .name = "qca956x_wmac",48 .driver_data = AR9300_DEVID_QCA956X,49 },50 {},51};52 53/* return bus cachesize in 4B word units */54static void ath_ahb_read_cachesize(struct ath_common *common, int *csz)55{56 *csz = L1_CACHE_BYTES >> 2;57}58 59static bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data)60{61 ath_err(common, "%s: eeprom data has to be provided externally\n",62 __func__);63 return false;64}65 66static const struct ath_bus_ops ath_ahb_bus_ops = {67 .ath_bus_type = ATH_AHB,68 .read_cachesize = ath_ahb_read_cachesize,69 .eeprom_read = ath_ahb_eeprom_read,70};71 72static int ath_ahb_probe(struct platform_device *pdev)73{74 void __iomem *mem;75 struct ath_softc *sc;76 struct ieee80211_hw *hw;77 struct resource *res;78 const struct platform_device_id *id = platform_get_device_id(pdev);79 int irq;80 int ret = 0;81 struct ath_hw *ah;82 char hw_name[64];83 84 if (!dev_get_platdata(&pdev->dev)) {85 dev_err(&pdev->dev, "no platform data specified\n");86 return -EINVAL;87 }88 89 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);90 if (res == NULL) {91 dev_err(&pdev->dev, "no memory resource found\n");92 return -ENXIO;93 }94 95 mem = devm_ioremap(&pdev->dev, res->start, resource_size(res));96 if (mem == NULL) {97 dev_err(&pdev->dev, "ioremap failed\n");98 return -ENOMEM;99 }100 101 irq = platform_get_irq(pdev, 0);102 if (irq < 0)103 return irq;104 105 ath9k_fill_chanctx_ops();106 hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);107 if (hw == NULL) {108 dev_err(&pdev->dev, "no memory for ieee80211_hw\n");109 return -ENOMEM;110 }111 112 SET_IEEE80211_DEV(hw, &pdev->dev);113 platform_set_drvdata(pdev, hw);114 115 sc = hw->priv;116 sc->hw = hw;117 sc->dev = &pdev->dev;118 sc->mem = mem;119 sc->irq = irq;120 121 ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);122 if (ret) {123 dev_err(&pdev->dev, "request_irq failed\n");124 goto err_free_hw;125 }126 127 ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops);128 if (ret) {129 dev_err(&pdev->dev, "failed to initialize device\n");130 goto err_irq;131 }132 133 ah = sc->sc_ah;134 ath9k_hw_name(ah, hw_name, sizeof(hw_name));135 wiphy_info(hw->wiphy, "%s mem=0x%p, irq=%d\n",136 hw_name, mem, irq);137 138 return 0;139 140 err_irq:141 free_irq(irq, sc);142 err_free_hw:143 ieee80211_free_hw(hw);144 return ret;145}146 147static void ath_ahb_remove(struct platform_device *pdev)148{149 struct ieee80211_hw *hw = platform_get_drvdata(pdev);150 151 if (hw) {152 struct ath_softc *sc = hw->priv;153 154 ath9k_deinit_device(sc);155 free_irq(sc->irq, sc);156 ieee80211_free_hw(sc->hw);157 }158}159 160static struct platform_driver ath_ahb_driver = {161 .probe = ath_ahb_probe,162 .remove_new = ath_ahb_remove,163 .driver = {164 .name = "ath9k",165 },166 .id_table = ath9k_platform_id_table,167};168 169MODULE_DEVICE_TABLE(platform, ath9k_platform_id_table);170 171int ath_ahb_init(void)172{173 return platform_driver_register(&ath_ahb_driver);174}175 176void ath_ahb_exit(void)177{178 platform_driver_unregister(&ath_ahb_driver);179}180