wl1251: move to it's own directory

wl1271 driver is under heavy development but on the other hand the older
wl1251 driver is currently considered more as a legacy driver. To make it
easier to develop wl1271 features move wl1251 to it's own directory,
drivers/net/wireless/wl1251.

There are no functional changes, only moving of files. One regression
is that Kconfig won't be updated automatically and user needs to enable
wl1251 manually with an older config file.

Signed-off-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 168 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl1251/event.c b/drivers/net/wireless/wl1251/event.c
new file mode 100644
index 000000000000..712372e50a87
--- /dev/null
+++ b/drivers/net/wireless/wl1251/event.c
@@ -0,0 +1,168 @@
+/*
+ * This file is part of wl1251
+ *
+ * Copyright (c) 1998-2007 Texas Instruments Incorporated
+ * Copyright (C) 2008 Nokia Corporation
+ *
+ * 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 "wl1251.h"
+#include "reg.h"
+#include "io.h"
+#include "event.h"
+#include "ps.h"
+
+static int wl1251_event_scan_complete(struct wl1251 *wl,
+				      struct event_mailbox *mbox)
+{
+	wl1251_debug(DEBUG_EVENT, "status: 0x%x, channels: %d",
+		     mbox->scheduled_scan_status,
+		     mbox->scheduled_scan_channels);
+
+	if (wl->scanning) {
+		ieee80211_scan_completed(wl->hw, false);
+		wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan completed");
+		wl->scanning = false;
+	}
+
+	return 0;
+}
+
+static void wl1251_event_mbox_dump(struct event_mailbox *mbox)
+{
+	wl1251_debug(DEBUG_EVENT, "MBOX DUMP:");
+	wl1251_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector);
+	wl1251_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask);
+}
+
+static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox)
+{
+	int ret;
+	u32 vector;
+
+	wl1251_event_mbox_dump(mbox);
+
+	vector = mbox->events_vector & ~(mbox->events_mask);
+	wl1251_debug(DEBUG_EVENT, "vector: 0x%x", vector);
+
+	if (vector & SCAN_COMPLETE_EVENT_ID) {
+		ret = wl1251_event_scan_complete(wl, mbox);
+		if (ret < 0)
+			return ret;
+	}
+
+	if (vector & BSS_LOSE_EVENT_ID) {
+		wl1251_debug(DEBUG_EVENT, "BSS_LOSE_EVENT");
+
+		if (wl->psm_requested && wl->psm) {
+			ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
+			if (ret < 0)
+				return ret;
+		}
+	}
+
+	if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID && wl->psm) {
+		wl1251_debug(DEBUG_EVENT, "SYNCHRONIZATION_TIMEOUT_EVENT");
+
+		/* indicate to the stack, that beacons have been lost */
+		ieee80211_beacon_loss(wl->vif);
+	}
+
+	if (vector & REGAINED_BSS_EVENT_ID) {
+		if (wl->psm_requested) {
+			ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
+			if (ret < 0)
+				return ret;
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * Poll the mailbox event field until any of the bits in the mask is set or a
+ * timeout occurs (WL1251_EVENT_TIMEOUT in msecs)
+ */
+int wl1251_event_wait(struct wl1251 *wl, u32 mask, int timeout_ms)
+{
+	u32 events_vector, event;
+	unsigned long timeout;
+
+	timeout = jiffies + msecs_to_jiffies(timeout_ms);
+
+	do {
+		if (time_after(jiffies, timeout))
+			return -ETIMEDOUT;
+
+		msleep(1);
+
+		/* read from both event fields */
+		wl1251_mem_read(wl, wl->mbox_ptr[0], &events_vector,
+				sizeof(events_vector));
+		event = events_vector & mask;
+		wl1251_mem_read(wl, wl->mbox_ptr[1], &events_vector,
+				sizeof(events_vector));
+		event |= events_vector & mask;
+	} while (!event);
+
+	return 0;
+}
+
+int wl1251_event_unmask(struct wl1251 *wl)
+{
+	int ret;
+
+	ret = wl1251_acx_event_mbox_mask(wl, ~(wl->event_mask));
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+void wl1251_event_mbox_config(struct wl1251 *wl)
+{
+	wl->mbox_ptr[0] = wl1251_reg_read32(wl, REG_EVENT_MAILBOX_PTR);
+	wl->mbox_ptr[1] = wl->mbox_ptr[0] + sizeof(struct event_mailbox);
+
+	wl1251_debug(DEBUG_EVENT, "MBOX ptrs: 0x%x 0x%x",
+		     wl->mbox_ptr[0], wl->mbox_ptr[1]);
+}
+
+int wl1251_event_handle(struct wl1251 *wl, u8 mbox_num)
+{
+	struct event_mailbox mbox;
+	int ret;
+
+	wl1251_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
+
+	if (mbox_num > 1)
+		return -EINVAL;
+
+	/* first we read the mbox descriptor */
+	wl1251_mem_read(wl, wl->mbox_ptr[mbox_num], &mbox,
+			    sizeof(struct event_mailbox));
+
+	/* process the descriptor */
+	ret = wl1251_event_process(wl, &mbox);
+	if (ret < 0)
+		return ret;
+
+	/* then we let the firmware know it can go on...*/
+	wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK);
+
+	return 0;
+}