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path: root/drivers/net/wireless/wl12xx/wl1271_sdio.c
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Diffstat (limited to 'drivers/net/wireless/wl12xx/wl1271_sdio.c')
-rw-r--r--drivers/net/wireless/wl12xx/wl1271_sdio.c291
1 files changed, 291 insertions, 0 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1271_sdio.c b/drivers/net/wireless/wl12xx/wl1271_sdio.c
new file mode 100644
index 00000000000..d3d6f302f70
--- /dev/null
+++ b/drivers/net/wireless/wl12xx/wl1271_sdio.c
@@ -0,0 +1,291 @@
+/*
+ * This file is part of wl1271
+ *
+ * Copyright (C) 2009-2010 Nokia Corporation
+ *
+ * Contact: Luciano Coelho <luciano.coelho@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/crc7.h>
+#include <linux/vmalloc.h>
+#include <linux/mmc/sdio_func.h>
+#include <linux/mmc/sdio_ids.h>
+#include <linux/mmc/card.h>
+#include <plat/gpio.h>
+
+#include "wl1271.h"
+#include "wl12xx_80211.h"
+#include "wl1271_io.h"
+
+
+#define RX71_WL1271_IRQ_GPIO 42
+
+#ifndef SDIO_VENDOR_ID_TI
+#define SDIO_VENDOR_ID_TI 0x0097
+#endif
+
+#ifndef SDIO_DEVICE_ID_TI_WL1271
+#define SDIO_DEVICE_ID_TI_WL1271 0x4076
+#endif
+
+static const struct sdio_device_id wl1271_devices[] = {
+ { SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
+ {}
+};
+MODULE_DEVICE_TABLE(sdio, wl1271_devices);
+
+static inline struct sdio_func *wl_to_func(struct wl1271 *wl)
+{
+ return wl->if_priv;
+}
+
+static struct device *wl1271_sdio_wl_to_dev(struct wl1271 *wl)
+{
+ return &(wl_to_func(wl)->dev);
+}
+
+static irqreturn_t wl1271_irq(int irq, void *cookie)
+{
+ struct wl1271 *wl = cookie;
+ unsigned long flags;
+
+ wl1271_debug(DEBUG_IRQ, "IRQ");
+
+ /* complete the ELP completion */
+ spin_lock_irqsave(&wl->wl_lock, flags);
+ if (wl->elp_compl) {
+ complete(wl->elp_compl);
+ wl->elp_compl = NULL;
+ }
+
+ if (!test_and_set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags))
+ ieee80211_queue_work(wl->hw, &wl->irq_work);
+ set_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags);
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+
+ return IRQ_HANDLED;
+}
+
+static void wl1271_sdio_disable_interrupts(struct wl1271 *wl)
+{
+ disable_irq(wl->irq);
+}
+
+static void wl1271_sdio_enable_interrupts(struct wl1271 *wl)
+{
+ enable_irq(wl->irq);
+}
+
+static void wl1271_sdio_reset(struct wl1271 *wl)
+{
+}
+
+static void wl1271_sdio_init(struct wl1271 *wl)
+{
+}
+
+static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
+ size_t len, bool fixed)
+{
+ int ret;
+ struct sdio_func *func = wl_to_func(wl);
+
+ if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
+ ((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
+ wl1271_debug(DEBUG_SDIO, "sdio read 52 addr 0x%x, byte 0x%02x",
+ addr, ((u8 *)buf)[0]);
+ } else {
+ if (fixed)
+ ret = sdio_readsb(func, buf, addr, len);
+ else
+ ret = sdio_memcpy_fromio(func, buf, addr, len);
+
+ wl1271_debug(DEBUG_SDIO, "sdio read 53 addr 0x%x, %zu bytes",
+ addr, len);
+ wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
+ }
+
+ if (ret)
+ wl1271_error("sdio read failed (%d)", ret);
+
+}
+
+static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
+ size_t len, bool fixed)
+{
+ int ret;
+ struct sdio_func *func = wl_to_func(wl);
+
+ if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
+ sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
+ wl1271_debug(DEBUG_SDIO, "sdio write 52 addr 0x%x, byte 0x%02x",
+ addr, ((u8 *)buf)[0]);
+ } else {
+ wl1271_debug(DEBUG_SDIO, "sdio write 53 addr 0x%x, %zu bytes",
+ addr, len);
+ wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
+
+ if (fixed)
+ ret = sdio_writesb(func, addr, buf, len);
+ else
+ ret = sdio_memcpy_toio(func, addr, buf, len);
+ }
+ if (ret)
+ wl1271_error("sdio write failed (%d)", ret);
+
+}
+
+static void wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
+{
+ struct sdio_func *func = wl_to_func(wl);
+
+ /* Let the SDIO stack handle wlan_enable control, so we
+ * keep host claimed while wlan is in use to keep wl1271
+ * alive.
+ */
+ if (enable) {
+ sdio_claim_host(func);
+ sdio_enable_func(func);
+ } else {
+ sdio_disable_func(func);
+ sdio_release_host(func);
+ }
+}
+
+static struct wl1271_if_operations sdio_ops = {
+ .read = wl1271_sdio_raw_read,
+ .write = wl1271_sdio_raw_write,
+ .reset = wl1271_sdio_reset,
+ .init = wl1271_sdio_init,
+ .power = wl1271_sdio_set_power,
+ .dev = wl1271_sdio_wl_to_dev,
+ .enable_irq = wl1271_sdio_enable_interrupts,
+ .disable_irq = wl1271_sdio_disable_interrupts
+};
+
+static int __devinit wl1271_probe(struct sdio_func *func,
+ const struct sdio_device_id *id)
+{
+ struct ieee80211_hw *hw;
+ struct wl1271 *wl;
+ int ret;
+
+ /* We are only able to handle the wlan function */
+ if (func->num != 0x02)
+ return -ENODEV;
+
+ hw = wl1271_alloc_hw();
+ if (IS_ERR(hw))
+ return PTR_ERR(hw);
+
+ wl = hw->priv;
+
+ wl->if_priv = func;
+ wl->if_ops = &sdio_ops;
+
+ /* Grab access to FN0 for ELP reg. */
+ func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
+
+ wl->irq = gpio_to_irq(RX71_WL1271_IRQ_GPIO);
+ if (wl->irq < 0) {
+ ret = wl->irq;
+ wl1271_error("could not get irq!");
+ goto out_free;
+ }
+
+ ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
+ if (ret < 0) {
+ wl1271_error("request_irq() failed: %d", ret);
+ goto out_free;
+ }
+
+ set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
+
+ disable_irq(wl->irq);
+
+ ret = wl1271_init_ieee80211(wl);
+ if (ret)
+ goto out_irq;
+
+ ret = wl1271_register_hw(wl);
+ if (ret)
+ goto out_irq;
+
+ sdio_set_drvdata(func, wl);
+
+ wl1271_notice("initialized");
+
+ return 0;
+
+ out_irq:
+ free_irq(wl->irq, wl);
+
+
+ out_free:
+ wl1271_free_hw(wl);
+
+ return ret;
+}
+
+static void __devexit wl1271_remove(struct sdio_func *func)
+{
+ struct wl1271 *wl = sdio_get_drvdata(func);
+
+ free_irq(wl->irq, wl);
+
+ wl1271_unregister_hw(wl);
+ wl1271_free_hw(wl);
+}
+
+static struct sdio_driver wl1271_sdio_driver = {
+ .name = "wl1271_sdio",
+ .id_table = wl1271_devices,
+ .probe = wl1271_probe,
+ .remove = __devexit_p(wl1271_remove),
+};
+
+static int __init wl1271_init(void)
+{
+ int ret;
+
+ ret = sdio_register_driver(&wl1271_sdio_driver);
+ if (ret < 0) {
+ wl1271_error("failed to register sdio driver: %d", ret);
+ goto out;
+ }
+
+out:
+ return ret;
+}
+
+static void __exit wl1271_exit(void)
+{
+ sdio_unregister_driver(&wl1271_sdio_driver);
+
+ wl1271_notice("unloaded");
+}
+
+module_init(wl1271_init);
+module_exit(wl1271_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
+MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
+MODULE_FIRMWARE(WL1271_FW_NAME);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-25 12:49:29 +0000