1203c4805SLuis R. Rodriguez /* 25b68138eSSujith Manoharan * Copyright (c) 2008-2011 Atheros Communications Inc. 3203c4805SLuis R. Rodriguez * Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org> 4203c4805SLuis R. Rodriguez * Copyright (c) 2009 Imre Kaloz <kaloz@openwrt.org> 5203c4805SLuis R. Rodriguez * 6203c4805SLuis R. Rodriguez * Permission to use, copy, modify, and/or distribute this software for any 7203c4805SLuis R. Rodriguez * purpose with or without fee is hereby granted, provided that the above 8203c4805SLuis R. Rodriguez * copyright notice and this permission notice appear in all copies. 9203c4805SLuis R. Rodriguez * 10203c4805SLuis R. Rodriguez * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11203c4805SLuis R. Rodriguez * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12203c4805SLuis R. Rodriguez * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13203c4805SLuis R. Rodriguez * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14203c4805SLuis R. Rodriguez * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15203c4805SLuis R. Rodriguez * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16203c4805SLuis R. Rodriguez * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17203c4805SLuis R. Rodriguez */ 18203c4805SLuis R. Rodriguez 19203c4805SLuis R. Rodriguez #include <linux/nl80211.h> 20203c4805SLuis R. Rodriguez #include <linux/platform_device.h> 219d9779e7SPaul Gortmaker #include <linux/module.h> 22*ac316725SRandy Dunlap #include <linux/mod_devicetable.h> 23203c4805SLuis R. Rodriguez #include "ath9k.h" 24203c4805SLuis R. Rodriguez 250a6c9b1bSVasanthakumar Thiagarajan static const struct platform_device_id ath9k_platform_id_table[] = { 266f11c819SVasanthakumar Thiagarajan { 276f11c819SVasanthakumar Thiagarajan .name = "ath9k", 286f11c819SVasanthakumar Thiagarajan .driver_data = AR5416_AR9100_DEVID, 296f11c819SVasanthakumar Thiagarajan }, 30247eee0eSVasanthakumar Thiagarajan { 31e9b7c591SGabor Juhos .name = "ar933x_wmac", 32e9b7c591SGabor Juhos .driver_data = AR9300_DEVID_AR9330, 33e9b7c591SGabor Juhos }, 34e9b7c591SGabor Juhos { 35247eee0eSVasanthakumar Thiagarajan .name = "ar934x_wmac", 36247eee0eSVasanthakumar Thiagarajan .driver_data = AR9300_DEVID_AR9340, 37247eee0eSVasanthakumar Thiagarajan }, 389476f4d6SGabor Juhos { 399476f4d6SGabor Juhos .name = "qca955x_wmac", 409476f4d6SGabor Juhos .driver_data = AR9300_DEVID_QCA955X, 419476f4d6SGabor Juhos }, 42c08148bbSSujith Manoharan { 43c08148bbSSujith Manoharan .name = "qca953x_wmac", 44c08148bbSSujith Manoharan .driver_data = AR9300_DEVID_AR953X, 45c08148bbSSujith Manoharan }, 462131fabbSMiaoqing Pan { 472131fabbSMiaoqing Pan .name = "qca956x_wmac", 482131fabbSMiaoqing Pan .driver_data = AR9300_DEVID_QCA956X, 492131fabbSMiaoqing Pan }, 506f11c819SVasanthakumar Thiagarajan {}, 516f11c819SVasanthakumar Thiagarajan }; 526f11c819SVasanthakumar Thiagarajan 53203c4805SLuis R. Rodriguez /* return bus cachesize in 4B word units */ 545bb12791SLuis R. Rodriguez static void ath_ahb_read_cachesize(struct ath_common *common, int *csz) 55203c4805SLuis R. Rodriguez { 56203c4805SLuis R. Rodriguez *csz = L1_CACHE_BYTES >> 2; 57203c4805SLuis R. Rodriguez } 58203c4805SLuis R. Rodriguez 595bb12791SLuis R. Rodriguez static bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data) 60203c4805SLuis R. Rodriguez { 6156398519SMartin Blumenstingl ath_err(common, "%s: eeprom data has to be provided externally\n", 6256398519SMartin Blumenstingl __func__); 63203c4805SLuis R. Rodriguez return false; 64203c4805SLuis R. Rodriguez } 65203c4805SLuis R. Rodriguez 668ca5a607SBhumika Goyal static const struct ath_bus_ops ath_ahb_bus_ops = { 67497ad9adSSujith .ath_bus_type = ATH_AHB, 68203c4805SLuis R. Rodriguez .read_cachesize = ath_ahb_read_cachesize, 69203c4805SLuis R. Rodriguez .eeprom_read = ath_ahb_eeprom_read, 70203c4805SLuis R. Rodriguez }; 71203c4805SLuis R. Rodriguez 72203c4805SLuis R. Rodriguez static int ath_ahb_probe(struct platform_device *pdev) 73203c4805SLuis R. Rodriguez { 74203c4805SLuis R. Rodriguez void __iomem *mem; 75203c4805SLuis R. Rodriguez struct ath_softc *sc; 76203c4805SLuis R. Rodriguez struct ieee80211_hw *hw; 77203c4805SLuis R. Rodriguez struct resource *res; 786f11c819SVasanthakumar Thiagarajan const struct platform_device_id *id = platform_get_device_id(pdev); 79203c4805SLuis R. Rodriguez int irq; 80203c4805SLuis R. Rodriguez int ret = 0; 81203c4805SLuis R. Rodriguez struct ath_hw *ah; 82f934c4d9SLuis R. Rodriguez char hw_name[64]; 83203c4805SLuis R. Rodriguez 848f616c6dSJingoo Han if (!dev_get_platdata(&pdev->dev)) { 85203c4805SLuis R. Rodriguez dev_err(&pdev->dev, "no platform data specified\n"); 86b81950b1SFelix Fietkau return -EINVAL; 87203c4805SLuis R. Rodriguez } 88203c4805SLuis R. Rodriguez 89203c4805SLuis R. Rodriguez res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 90203c4805SLuis R. Rodriguez if (res == NULL) { 91203c4805SLuis R. Rodriguez dev_err(&pdev->dev, "no memory resource found\n"); 92b81950b1SFelix Fietkau return -ENXIO; 93203c4805SLuis R. Rodriguez } 94203c4805SLuis R. Rodriguez 95b81950b1SFelix Fietkau mem = devm_ioremap_nocache(&pdev->dev, res->start, resource_size(res)); 96203c4805SLuis R. Rodriguez if (mem == NULL) { 97203c4805SLuis R. Rodriguez dev_err(&pdev->dev, "ioremap failed\n"); 98b81950b1SFelix Fietkau return -ENOMEM; 99203c4805SLuis R. Rodriguez } 100203c4805SLuis R. Rodriguez 101203c4805SLuis R. Rodriguez res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 102203c4805SLuis R. Rodriguez if (res == NULL) { 103203c4805SLuis R. Rodriguez dev_err(&pdev->dev, "no IRQ resource found\n"); 104b81950b1SFelix Fietkau return -ENXIO; 105203c4805SLuis R. Rodriguez } 106203c4805SLuis R. Rodriguez 107203c4805SLuis R. Rodriguez irq = res->start; 108203c4805SLuis R. Rodriguez 109cf9ae8faSRajkumar Manoharan ath9k_fill_chanctx_ops(); 1109ac58615SFelix Fietkau hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops); 111203c4805SLuis R. Rodriguez if (hw == NULL) { 112203c4805SLuis R. Rodriguez dev_err(&pdev->dev, "no memory for ieee80211_hw\n"); 113b81950b1SFelix Fietkau return -ENOMEM; 114203c4805SLuis R. Rodriguez } 115203c4805SLuis R. Rodriguez 116203c4805SLuis R. Rodriguez SET_IEEE80211_DEV(hw, &pdev->dev); 117203c4805SLuis R. Rodriguez platform_set_drvdata(pdev, hw); 118203c4805SLuis R. Rodriguez 1199ac58615SFelix Fietkau sc = hw->priv; 120203c4805SLuis R. Rodriguez sc->hw = hw; 121203c4805SLuis R. Rodriguez sc->dev = &pdev->dev; 122203c4805SLuis R. Rodriguez sc->mem = mem; 123203c4805SLuis R. Rodriguez sc->irq = irq; 124203c4805SLuis R. Rodriguez 125203c4805SLuis R. Rodriguez ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc); 126203c4805SLuis R. Rodriguez if (ret) { 127580171f7SLuis R. Rodriguez dev_err(&pdev->dev, "request_irq failed\n"); 128285f2ddaSSujith goto err_free_hw; 129285f2ddaSSujith } 130285f2ddaSSujith 131eb93e891SPavel Roskin ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops); 132285f2ddaSSujith if (ret) { 133285f2ddaSSujith dev_err(&pdev->dev, "failed to initialize device\n"); 134285f2ddaSSujith goto err_irq; 135203c4805SLuis R. Rodriguez } 136203c4805SLuis R. Rodriguez 137203c4805SLuis R. Rodriguez ah = sc->sc_ah; 138f934c4d9SLuis R. Rodriguez ath9k_hw_name(ah, hw_name, sizeof(hw_name)); 139c96c31e4SJoe Perches wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n", 140c96c31e4SJoe Perches hw_name, (unsigned long)mem, irq); 141203c4805SLuis R. Rodriguez 142203c4805SLuis R. Rodriguez return 0; 143203c4805SLuis R. Rodriguez 144285f2ddaSSujith err_irq: 145285f2ddaSSujith free_irq(irq, sc); 146203c4805SLuis R. Rodriguez err_free_hw: 147203c4805SLuis R. Rodriguez ieee80211_free_hw(hw); 148203c4805SLuis R. Rodriguez return ret; 149203c4805SLuis R. Rodriguez } 150203c4805SLuis R. Rodriguez 151203c4805SLuis R. Rodriguez static int ath_ahb_remove(struct platform_device *pdev) 152203c4805SLuis R. Rodriguez { 153203c4805SLuis R. Rodriguez struct ieee80211_hw *hw = platform_get_drvdata(pdev); 154203c4805SLuis R. Rodriguez 155203c4805SLuis R. Rodriguez if (hw) { 1569ac58615SFelix Fietkau struct ath_softc *sc = hw->priv; 157203c4805SLuis R. Rodriguez 158285f2ddaSSujith ath9k_deinit_device(sc); 159285f2ddaSSujith free_irq(sc->irq, sc); 160285f2ddaSSujith ieee80211_free_hw(sc->hw); 161203c4805SLuis R. Rodriguez } 162203c4805SLuis R. Rodriguez 163203c4805SLuis R. Rodriguez return 0; 164203c4805SLuis R. Rodriguez } 165203c4805SLuis R. Rodriguez 166203c4805SLuis R. Rodriguez static struct platform_driver ath_ahb_driver = { 167203c4805SLuis R. Rodriguez .probe = ath_ahb_probe, 168203c4805SLuis R. Rodriguez .remove = ath_ahb_remove, 169203c4805SLuis R. Rodriguez .driver = { 170203c4805SLuis R. Rodriguez .name = "ath9k", 171203c4805SLuis R. Rodriguez }, 1726f11c819SVasanthakumar Thiagarajan .id_table = ath9k_platform_id_table, 173203c4805SLuis R. Rodriguez }; 174203c4805SLuis R. Rodriguez 1756f11c819SVasanthakumar Thiagarajan MODULE_DEVICE_TABLE(platform, ath9k_platform_id_table); 1766f11c819SVasanthakumar Thiagarajan 177203c4805SLuis R. Rodriguez int ath_ahb_init(void) 178203c4805SLuis R. Rodriguez { 179203c4805SLuis R. Rodriguez return platform_driver_register(&ath_ahb_driver); 180203c4805SLuis R. Rodriguez } 181203c4805SLuis R. Rodriguez 182203c4805SLuis R. Rodriguez void ath_ahb_exit(void) 183203c4805SLuis R. Rodriguez { 184203c4805SLuis R. Rodriguez platform_driver_unregister(&ath_ahb_driver); 185203c4805SLuis R. Rodriguez } 186