1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/b43/rfkill.c b/drivers/net/wireless/broadcom/b43/rfkill.c
new file mode 100644
index 000000000000..70c2fcedd1bb
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43/rfkill.c
@@ -0,0 +1,70 @@
+/*
+
+  Broadcom B43 wireless driver
+  RFKILL support
+
+  Copyright (c) 2007 Michael Buesch <m@bues.ch>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  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; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include "b43.h"
+
+
+/* Returns TRUE, if the radio is enabled in hardware. */
+bool b43_is_hw_radio_enabled(struct b43_wldev *dev)
+{
+	return !(b43_read32(dev, B43_MMIO_RADIO_HWENABLED_HI)
+		& B43_MMIO_RADIO_HWENABLED_HI_MASK);
+}
+
+/* The poll callback for the hardware button. */
+void b43_rfkill_poll(struct ieee80211_hw *hw)
+{
+	struct b43_wl *wl = hw_to_b43_wl(hw);
+	struct b43_wldev *dev = wl->current_dev;
+	bool enabled;
+	bool brought_up = false;
+
+	mutex_lock(&wl->mutex);
+	if (unlikely(b43_status(dev) < B43_STAT_INITIALIZED)) {
+		if (b43_bus_powerup(dev, 0)) {
+			mutex_unlock(&wl->mutex);
+			return;
+		}
+		b43_device_enable(dev, 0);
+		brought_up = true;
+	}
+
+	enabled = b43_is_hw_radio_enabled(dev);
+
+	if (unlikely(enabled != dev->radio_hw_enable)) {
+		dev->radio_hw_enable = enabled;
+		b43info(wl, "Radio hardware status changed to %s\n",
+			enabled ? "ENABLED" : "DISABLED");
+		wiphy_rfkill_set_hw_state(hw->wiphy, !enabled);
+		if (enabled != dev->phy.radio_on)
+			b43_software_rfkill(dev, !enabled);
+	}
+
+	if (brought_up) {
+		b43_device_disable(dev, 0);
+		b43_bus_may_powerdown(dev);
+	}
+
+	mutex_unlock(&wl->mutex);
+}