add b43

[openwrt/staging/mkresin.git] / package / b43 / src / rfkill.c

diff --git a/package/b43/src/rfkill.c b/package/b43/src/rfkill.c
new file mode 100644 (file)
index 0000000..800e0a6
--- /dev/null
+++ b/package/b43/src/rfkill.c
@@ -0,0 +1,184 @@
+/*
+
+  Broadcom B43 wireless driver
+  RFKILL support
+
+  Copyright (c) 2007 Michael Buesch <mb@bu3sch.de>
+
+  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 "rfkill.h"
+#include "b43.h"
+
+
+/* Returns TRUE, if the radio is enabled in hardware. */
+static bool b43_is_hw_radio_enabled(struct b43_wldev *dev)
+{
+       if (dev->phy.rev >= 3) {
+               if (!(b43_read32(dev, B43_MMIO_RADIO_HWENABLED_HI)
+                     & B43_MMIO_RADIO_HWENABLED_HI_MASK))
+                       return 1;
+       } else {
+               if (b43_read16(dev, B43_MMIO_RADIO_HWENABLED_LO)
+                   & B43_MMIO_RADIO_HWENABLED_LO_MASK)
+                       return 1;
+       }
+       return 0;
+}
+
+/* The poll callback for the hardware button. */
+static void b43_rfkill_poll(struct input_polled_dev *poll_dev)
+{
+       struct b43_wldev *dev = poll_dev->private;
+       struct b43_wl *wl = dev->wl;
+       bool enabled;
+
+       mutex_lock(&wl->mutex);
+       B43_WARN_ON(b43_status(dev) < B43_STAT_INITIALIZED);
+       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");
+               mutex_unlock(&wl->mutex);
+               input_report_key(poll_dev->input, KEY_WLAN, enabled);
+       } else
+               mutex_unlock(&wl->mutex);
+}
+
+/* Called when the RFKILL toggled in software.
+ * This is called without locking. */
+static int b43_rfkill_soft_toggle(void *data, enum rfkill_state state)
+{
+       struct b43_wldev *dev = data;
+       struct b43_wl *wl = dev->wl;
+       int err = 0;
+
+       mutex_lock(&wl->mutex);
+       if (b43_status(dev) < B43_STAT_INITIALIZED)
+               goto out_unlock;
+
+       switch (state) {
+       case RFKILL_STATE_ON:
+               if (!dev->radio_hw_enable) {
+                       /* No luck. We can't toggle the hardware RF-kill
+                        * button from software. */
+                       err = -EBUSY;
+                       goto out_unlock;
+               }
+               if (!dev->phy.radio_on)
+                       b43_radio_turn_on(dev);
+               break;
+       case RFKILL_STATE_OFF:
+               if (dev->phy.radio_on)
+                       b43_radio_turn_off(dev, 0);
+               break;
+       }
+
+out_unlock:
+       mutex_unlock(&wl->mutex);
+
+       return err;
+}
+
+char * b43_rfkill_led_name(struct b43_wldev *dev)
+{
+       struct b43_wl *wl = dev->wl;
+
+       if (!wl->rfkill.rfkill)
+               return NULL;
+       return rfkill_get_led_name(wl->rfkill.rfkill);
+}
+
+void b43_rfkill_init(struct b43_wldev *dev)
+{
+       struct b43_wl *wl = dev->wl;
+       struct b43_rfkill *rfk = &(wl->rfkill);
+       int err;
+
+       if (rfk->rfkill) {
+               err = rfkill_register(rfk->rfkill);
+               if (err) {
+                       b43warn(wl, "Failed to register RF-kill button\n");
+                       goto err_free_rfk;
+               }
+       }
+       if (rfk->poll_dev) {
+               err = input_register_polled_device(rfk->poll_dev);
+               if (err) {
+                       b43warn(wl, "Failed to register RF-kill polldev\n");
+                       goto err_free_polldev;
+               }
+       }
+
+       return;
+err_free_rfk:
+       rfkill_free(rfk->rfkill);
+       rfk->rfkill = NULL;
+err_free_polldev:
+       input_free_polled_device(rfk->poll_dev);
+       rfk->poll_dev = NULL;
+}
+
+void b43_rfkill_exit(struct b43_wldev *dev)
+{
+       struct b43_rfkill *rfk = &(dev->wl->rfkill);
+
+       if (rfk->poll_dev)
+               input_unregister_polled_device(rfk->poll_dev);
+       if (rfk->rfkill)
+               rfkill_unregister(rfk->rfkill);
+}
+
+void b43_rfkill_alloc(struct b43_wldev *dev)
+{
+       struct b43_wl *wl = dev->wl;
+       struct b43_rfkill *rfk = &(wl->rfkill);
+
+       snprintf(rfk->name, sizeof(rfk->name),
+                "b43-%s", wiphy_name(wl->hw->wiphy));
+
+       rfk->rfkill = rfkill_allocate(dev->dev->dev, RFKILL_TYPE_WLAN);
+       if (!rfk->rfkill) {
+               b43warn(wl, "Failed to allocate RF-kill button\n");
+               return;
+       }
+       rfk->rfkill->name = rfk->name;
+       rfk->rfkill->state = RFKILL_STATE_ON;
+       rfk->rfkill->data = dev;
+       rfk->rfkill->toggle_radio = b43_rfkill_soft_toggle;
+       rfk->rfkill->user_claim_unsupported = 1;
+
+       rfk->poll_dev = input_allocate_polled_device();
+       if (rfk->poll_dev) {
+               rfk->poll_dev->private = dev;
+               rfk->poll_dev->poll = b43_rfkill_poll;
+               rfk->poll_dev->poll_interval = 1000; /* msecs */
+       } else
+               b43warn(wl, "Failed to allocate RF-kill polldev\n");
+}
+
+void b43_rfkill_free(struct b43_wldev *dev)
+{
+       struct b43_rfkill *rfk = &(dev->wl->rfkill);
+
+       input_free_polled_device(rfk->poll_dev);
+       rfk->poll_dev = NULL;
+       rfkill_free(rfk->rfkill);
+       rfk->rfkill = NULL;
+}