--- /dev/null
+/*
+ * 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,
+ },
+ {
+ .name = "qca953x_wmac",
+ .driver_data = AR9300_DEVID_AR953X,
+ },
+ {
+ .name = "qca956x_wmac",
+ .driver_data = AR9300_DEVID_QCA956X,
+ },
+ {},
+};
+
+/* 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 = dev_get_platdata(&pdev->dev);
+ 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 (!dev_get_platdata(&pdev->dev)) {
+ 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;
+
+ ath9k_fill_chanctx_ops();
+ 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;
+
+ 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);
+ 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);
+ }
+
+ return 0;
+}
+
+static struct platform_driver ath_ahb_driver = {
+ .probe = ath_ahb_probe,
+ .remove = ath_ahb_remove,
+ .driver = {
+ .name = "ath9k",
+ },
+ .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);
+}
Code Review / kvmfornfv.git / blobdiff