Maemo patchset 20101501+0m5

[h-e-n] / drivers / net / wireless / wl12xx / wl1271_event.c

diff --git a/drivers/net/wireless/wl12xx/wl1271_event.c b/drivers/net/wireless/wl12xx/wl1271_event.c
new file mode 100644 (file)
index 0000000..122a6cc
--- /dev/null
+++ b/drivers/net/wireless/wl12xx/wl1271_event.c
@@ -0,0 +1,126 @@
+/*
+ * This file is part of wl1271
+ *
+ * Copyright (c) 1998-2007 Texas Instruments Incorporated
+ * Copyright (C) 2008 Nokia Corporation
+ *
+ * Contact: Kalle Valo <kalle.valo@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 "wl1271.h"
+#include "wl1271_reg.h"
+#include "wl1271_spi.h"
+#include "wl1271_event.h"
+#include "wl1271_ps.h"
+
+static int wl1271_event_scan_complete(struct wl1271 *wl,
+                                     struct event_mailbox *mbox)
+{
+       wl1271_debug(DEBUG_EVENT, "status: 0x%x",
+                    mbox->scheduled_scan_status);
+
+       if (wl->scanning) {
+               mutex_unlock(&wl->mutex);
+               ieee80211_scan_completed(wl->hw);
+               mutex_lock(&wl->mutex);
+               wl->scanning = false;
+       }
+
+       return 0;
+}
+
+static void wl1271_event_mbox_dump(struct event_mailbox *mbox)
+{
+       wl1271_debug(DEBUG_EVENT, "MBOX DUMP:");
+       wl1271_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector);
+       wl1271_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask);
+}
+
+static int wl1271_event_process(struct wl1271 *wl, struct event_mailbox *mbox)
+{
+       int ret;
+       u32 vector;
+
+       wl1271_event_mbox_dump(mbox);
+
+       vector = mbox->events_vector & ~(mbox->events_mask);
+       wl1271_debug(DEBUG_EVENT, "vector: 0x%x", vector);
+
+       if (vector & SCAN_COMPLETE_EVENT_ID) {
+               ret = wl1271_event_scan_complete(wl, mbox);
+               if (ret < 0)
+                       return ret;
+       }
+
+       if (vector & BSS_LOSE_EVENT_ID) {
+               wl1271_debug(DEBUG_EVENT, "BSS_LOSE_EVENT");
+
+               if (wl->psm_requested && wl->psm) {
+                       ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE);
+                       if (ret < 0)
+                               return ret;
+               }
+       }
+
+       return 0;
+}
+
+int wl1271_event_unmask(struct wl1271 *wl)
+{
+       int ret;
+
+       ret = wl1271_acx_event_mbox_mask(wl, ~(wl->event_mask));
+       if (ret < 0)
+               return ret;
+
+       return 0;
+}
+
+void wl1271_event_mbox_config(struct wl1271 *wl)
+{
+       wl->mbox_ptr[0] = wl1271_reg_read32(wl, REG_EVENT_MAILBOX_PTR);
+       wl->mbox_ptr[1] = wl->mbox_ptr[0] + sizeof(struct event_mailbox);
+
+       wl1271_debug(DEBUG_EVENT, "MBOX ptrs: 0x%x 0x%x",
+                    wl->mbox_ptr[0], wl->mbox_ptr[1]);
+}
+
+int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num)
+{
+       struct event_mailbox mbox;
+       int ret;
+
+       wl1271_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
+
+       if (mbox_num > 1)
+               return -EINVAL;
+
+       /* first we read the mbox descriptor */
+       wl1271_spi_mem_read(wl, wl->mbox_ptr[mbox_num], &mbox,
+                           sizeof(struct event_mailbox));
+
+       /* process the descriptor */
+       ret = wl1271_event_process(wl, &mbox);
+       if (ret < 0)
+               return ret;
+
+       /* then we let the firmware know it can go on...*/
+       wl1271_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK);
+
+       return 0;
+}