| /* |
| * 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, |
| }, |
| { |
| .name = "qca955x_wmac", |
| .driver_data = AR9300_DEVID_QCA955X, |
| }, |
| {}, |
| }; |
| |
| /* 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"); |
| return -EINVAL; |
| } |
| |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| if (res == NULL) { |
| dev_err(&pdev->dev, "no memory resource found\n"); |
| return -ENXIO; |
| } |
| |
| mem = devm_ioremap_nocache(&pdev->dev, res->start, resource_size(res)); |
| if (mem == NULL) { |
| dev_err(&pdev->dev, "ioremap failed\n"); |
| return -ENOMEM; |
| } |
| |
| res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| if (res == NULL) { |
| dev_err(&pdev->dev, "no IRQ resource found\n"); |
| return -ENXIO; |
| } |
| |
| 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"); |
| return -ENOMEM; |
| } |
| |
| 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() */ |
| set_bit(SC_OP_INVALID, &sc->sc_flags); |
| |
| 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); |
| 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; |
| |
| ath9k_deinit_device(sc); |
| free_irq(sc->irq, sc); |
| ieee80211_free_hw(sc->hw); |
| 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); |
| } |