forked from Minki/linux
2131fabb4b
Signed-off-by: Miaoqing Pan <miaoqing@qca.qualcomm.com> Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
197 lines
4.6 KiB
C
197 lines
4.6 KiB
C
/*
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* Copyright (c) 2008-2011 Atheros Communications Inc.
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* Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (c) 2009 Imre Kaloz <kaloz@openwrt.org>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/nl80211.h>
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#include <linux/platform_device.h>
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#include <linux/ath9k_platform.h>
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#include <linux/module.h>
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#include "ath9k.h"
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static const struct platform_device_id ath9k_platform_id_table[] = {
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{
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.name = "ath9k",
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.driver_data = AR5416_AR9100_DEVID,
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},
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{
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.name = "ar933x_wmac",
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.driver_data = AR9300_DEVID_AR9330,
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},
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{
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.name = "ar934x_wmac",
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.driver_data = AR9300_DEVID_AR9340,
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},
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{
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.name = "qca955x_wmac",
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.driver_data = AR9300_DEVID_QCA955X,
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},
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{
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.name = "qca953x_wmac",
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.driver_data = AR9300_DEVID_AR953X,
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},
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{
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.name = "qca956x_wmac",
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.driver_data = AR9300_DEVID_QCA956X,
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},
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{},
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};
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/* return bus cachesize in 4B word units */
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static void ath_ahb_read_cachesize(struct ath_common *common, int *csz)
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{
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*csz = L1_CACHE_BYTES >> 2;
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}
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static bool ath_ahb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
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{
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struct ath_softc *sc = (struct ath_softc *)common->priv;
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struct platform_device *pdev = to_platform_device(sc->dev);
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struct ath9k_platform_data *pdata;
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pdata = dev_get_platdata(&pdev->dev);
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if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
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ath_err(common,
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"%s: flash read failed, offset %08x is out of range\n",
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__func__, off);
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return false;
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}
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*data = pdata->eeprom_data[off];
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return true;
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}
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static struct ath_bus_ops ath_ahb_bus_ops = {
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.ath_bus_type = ATH_AHB,
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.read_cachesize = ath_ahb_read_cachesize,
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.eeprom_read = ath_ahb_eeprom_read,
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};
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static int ath_ahb_probe(struct platform_device *pdev)
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{
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void __iomem *mem;
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struct ath_softc *sc;
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struct ieee80211_hw *hw;
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struct resource *res;
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const struct platform_device_id *id = platform_get_device_id(pdev);
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int irq;
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int ret = 0;
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struct ath_hw *ah;
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char hw_name[64];
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if (!dev_get_platdata(&pdev->dev)) {
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dev_err(&pdev->dev, "no platform data specified\n");
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return -EINVAL;
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}
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (res == NULL) {
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dev_err(&pdev->dev, "no memory resource found\n");
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return -ENXIO;
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}
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mem = devm_ioremap_nocache(&pdev->dev, res->start, resource_size(res));
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if (mem == NULL) {
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dev_err(&pdev->dev, "ioremap failed\n");
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return -ENOMEM;
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}
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res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
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if (res == NULL) {
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dev_err(&pdev->dev, "no IRQ resource found\n");
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return -ENXIO;
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}
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irq = res->start;
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ath9k_fill_chanctx_ops();
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hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
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if (hw == NULL) {
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dev_err(&pdev->dev, "no memory for ieee80211_hw\n");
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return -ENOMEM;
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}
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SET_IEEE80211_DEV(hw, &pdev->dev);
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platform_set_drvdata(pdev, hw);
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sc = hw->priv;
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sc->hw = hw;
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sc->dev = &pdev->dev;
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sc->mem = mem;
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sc->irq = irq;
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ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
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if (ret) {
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dev_err(&pdev->dev, "request_irq failed\n");
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goto err_free_hw;
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}
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ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops);
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if (ret) {
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dev_err(&pdev->dev, "failed to initialize device\n");
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goto err_irq;
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}
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ah = sc->sc_ah;
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ath9k_hw_name(ah, hw_name, sizeof(hw_name));
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wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
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hw_name, (unsigned long)mem, irq);
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return 0;
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err_irq:
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free_irq(irq, sc);
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err_free_hw:
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ieee80211_free_hw(hw);
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return ret;
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}
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static int ath_ahb_remove(struct platform_device *pdev)
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{
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struct ieee80211_hw *hw = platform_get_drvdata(pdev);
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if (hw) {
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struct ath_softc *sc = hw->priv;
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ath9k_deinit_device(sc);
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free_irq(sc->irq, sc);
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ieee80211_free_hw(sc->hw);
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}
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return 0;
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}
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static struct platform_driver ath_ahb_driver = {
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.probe = ath_ahb_probe,
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.remove = ath_ahb_remove,
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.driver = {
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.name = "ath9k",
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},
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.id_table = ath9k_platform_id_table,
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};
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MODULE_DEVICE_TABLE(platform, ath9k_platform_id_table);
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int ath_ahb_init(void)
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{
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return platform_driver_register(&ath_ahb_driver);
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}
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void ath_ahb_exit(void)
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{
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platform_driver_unregister(&ath_ahb_driver);
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}
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