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-rw-r--r--package/b43/src/rfkill.c184
1 files changed, 184 insertions, 0 deletions
diff --git a/package/b43/src/rfkill.c b/package/b43/src/rfkill.c
new file mode 100644
index 0000000000..800e0a61a7
--- /dev/null
+++ b/package/b43/src/rfkill.c
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+/*
+
+ 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;
+}