/* * Copyright (c) 2008-2011 Atheros Communications Inc. * Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org> * Copyright (c) 2009 Imre Kaloz <kaloz@openwrt.org> * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <linux/nl80211.h> #include <linux/platform_device.h> #include <linux/ath9k_platform.h> #include <linux/module.h> #include "ath9k.h" static const struct platform_device_id ath9k_platform_id_table[] = { { .name = "ath9k", .driver_data = AR5416_AR9100_DEVID, }, { .name = "ar933x_wmac", .driver_data = AR9300_DEVID_AR9330, }, { .name = "ar934x_wmac", .driver_data = AR9300_DEVID_AR9340, }, {}, }; /* return bus cachesize in 4B word units */ static void ath_ahb_read_cachesize(struct ath_common *common, int *csz) { *csz = L1_CACHE_BYTES >> 2; } static bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data) { struct ath_softc *sc = (struct ath_softc *)common->priv; struct platform_device *pdev = to_platform_device(sc->dev); struct ath9k_platform_data *pdata; pdata = (struct ath9k_platform_data *) pdev->dev.platform_data; if (off >= (ARRAY_SIZE(pdata->eeprom_data))) { ath_err(common, "%s: flash read failed, offset %08x is out of range\n", __func__, off); return false; } *data = pdata->eeprom_data[off]; return true; } static struct ath_bus_ops ath_ahb_bus_ops = { .ath_bus_type = ATH_AHB, .read_cachesize = ath_ahb_read_cachesize, .eeprom_read = ath_ahb_eeprom_read, }; static int ath_ahb_probe(struct platform_device *pdev) { void __iomem *mem; struct ath_softc *sc; struct ieee80211_hw *hw; struct resource *res; const struct platform_device_id *id = platform_get_device_id(pdev); int irq; int ret = 0; struct ath_hw *ah; char hw_name[64]; if (!pdev->dev.platform_data) { dev_err(&pdev->dev, "no platform data specified\n"); ret = -EINVAL; goto err_out; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (res == NULL) { dev_err(&pdev->dev, "no memory resource found\n"); ret = -ENXIO; goto err_out; } mem = ioremap_nocache(res->start, resource_size(res)); if (mem == NULL) { dev_err(&pdev->dev, "ioremap failed\n"); ret = -ENOMEM; goto err_out; } res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (res == NULL) { dev_err(&pdev->dev, "no IRQ resource found\n"); ret = -ENXIO; goto err_iounmap; } irq = res->start; hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops); if (hw == NULL) { dev_err(&pdev->dev, "no memory for ieee80211_hw\n"); ret = -ENOMEM; goto err_iounmap; } SET_IEEE80211_DEV(hw, &pdev->dev); platform_set_drvdata(pdev, hw); sc = hw->priv; sc->hw = hw; sc->dev = &pdev->dev; sc->mem = mem; sc->irq = irq; /* Will be cleared in ath9k_start() */ sc->sc_flags |= SC_OP_INVALID; ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc); if (ret) { dev_err(&pdev->dev, "request_irq failed\n"); goto err_free_hw; } ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops); if (ret) { dev_err(&pdev->dev, "failed to initialize device\n"); goto err_irq; } ah = sc->sc_ah; ath9k_hw_name(ah, hw_name, sizeof(hw_name)); wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n", hw_name, (unsigned long)mem, irq); return 0; err_irq: free_irq(irq, sc); err_free_hw: ieee80211_free_hw(hw); platform_set_drvdata(pdev, NULL); err_iounmap: iounmap(mem); err_out: return ret; } static int ath_ahb_remove(struct platform_device *pdev) { struct ieee80211_hw *hw = platform_get_drvdata(pdev); if (hw) { struct ath_softc *sc = hw->priv; void __iomem *mem = sc->mem; ath9k_deinit_device(sc); free_irq(sc->irq, sc); ieee80211_free_hw(sc->hw); iounmap(mem); platform_set_drvdata(pdev, NULL); } return 0; } static struct platform_driver ath_ahb_driver = { .probe = ath_ahb_probe, .remove = ath_ahb_remove, .driver = { .name = "ath9k", .owner = THIS_MODULE, }, .id_table = ath9k_platform_id_table, }; MODULE_DEVICE_TABLE(platform, ath9k_platform_id_table); int ath_ahb_init(void) { return platform_driver_register(&ath_ahb_driver); } void ath_ahb_exit(void) { platform_driver_unregister(&ath_ahb_driver); }