/*
- Broadcom B43legacy wireless driver
+ Broadcom B43 wireless driver
RFKILL support
Copyright (c) 2007 Michael Buesch <mb@bu3sch.de>
#include "radio.h"
#include "b43legacy.h"
+#include <linux/kmod.h>
-static void b43legacy_notify_rfkill_press(struct work_struct *work)
+
+/* Returns TRUE, if the radio is enabled in hardware. */
+static bool b43legacy_is_hw_radio_enabled(struct b43legacy_wldev *dev)
{
- struct b43legacy_rfkill *rfk = container_of(work,
- struct b43legacy_rfkill,
- notify_work);
- struct b43legacy_wl *wl = container_of(rfk, struct b43legacy_wl,
- rfkill);
- struct b43legacy_wldev *dev;
- enum rfkill_state state;
+ if (dev->phy.rev >= 3) {
+ if (!(b43legacy_read32(dev, B43legacy_MMIO_RADIO_HWENABLED_HI)
+ & B43legacy_MMIO_RADIO_HWENABLED_HI_MASK))
+ return 1;
+ } else {
+ if (b43legacy_read16(dev, B43legacy_MMIO_RADIO_HWENABLED_LO)
+ & B43legacy_MMIO_RADIO_HWENABLED_LO_MASK)
+ return 1;
+ }
+ return 0;
+}
+
+/* The poll callback for the hardware button. */
+static void b43legacy_rfkill_poll(struct input_polled_dev *poll_dev)
+{
+ struct b43legacy_wldev *dev = poll_dev->private;
+ struct b43legacy_wl *wl = dev->wl;
+ bool enabled;
+ bool report_change = 0;
mutex_lock(&wl->mutex);
- dev = wl->current_dev;
- if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) {
+ if (unlikely(b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)) {
mutex_unlock(&wl->mutex);
return;
}
- if (dev->radio_hw_enable)
- state = RFKILL_STATE_ON;
- else
- state = RFKILL_STATE_OFF;
- b43legacyinfo(wl, "Radio hardware status changed to %s\n",
- dev->radio_hw_enable ? "ENABLED" : "DISABLED");
+ enabled = b43legacy_is_hw_radio_enabled(dev);
+ if (unlikely(enabled != dev->radio_hw_enable)) {
+ dev->radio_hw_enable = enabled;
+ report_change = 1;
+ b43legacyinfo(wl, "Radio hardware status changed to %s\n",
+ enabled ? "ENABLED" : "DISABLED");
+ }
mutex_unlock(&wl->mutex);
- if (rfk->rfkill) {
- /* Be careful. This calls back into the software toggle
- * routines. So we must unlock before calling. */
- rfkill_switch_all(rfk->rfkill->type, state);
+ /* send the radio switch event to the system - note both a key press
+ * and a release are required */
+ if (unlikely(report_change)) {
+ input_report_key(poll_dev->input, KEY_WLAN, 1);
+ input_report_key(poll_dev->input, KEY_WLAN, 0);
}
}
-/* Called when the RFKILL toggled in hardware.
- * This is called with the mutex locked. */
-void b43legacy_rfkill_toggled(struct b43legacy_wldev *dev, bool on)
-{
- struct b43legacy_wl *wl = dev->wl;
-
- B43legacy_WARN_ON(b43legacy_status(dev) < B43legacy_STAT_INITIALIZED);
- /* Update the RF status asynchronously, as rfkill will
- * call back into the software toggle handler.
- * This would deadlock if done synchronously. */
- queue_work(wl->hw->workqueue, &wl->rfkill.notify_work);
-}
-
/* Called when the RFKILL toggled in software.
* This is called without locking. */
static int b43legacy_rfkill_soft_toggle(void *data, enum rfkill_state state)
{
struct b43legacy_wldev *dev = data;
struct b43legacy_wl *wl = dev->wl;
- int err = 0;
+ int err = -EBUSY;
+
+ if (!wl->rfkill.registered)
+ return 0;
mutex_lock(&wl->mutex);
if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)
goto out_unlock;
-
+ err = 0;
switch (state) {
- case RFKILL_STATE_ON:
+ case RFKILL_STATE_UNBLOCKED:
if (!dev->radio_hw_enable) {
/* No luck. We can't toggle the hardware RF-kill
* button from software. */
if (!dev->phy.radio_on)
b43legacy_radio_turn_on(dev);
break;
- case RFKILL_STATE_OFF:
+ case RFKILL_STATE_SOFT_BLOCKED:
if (dev->phy.radio_on)
b43legacy_radio_turn_off(dev, 0);
break;
+ default:
+ b43legacywarn(wl, "Received unexpected rfkill state %d.\n",
+ state);
+ break;
}
out_unlock:
char *b43legacy_rfkill_led_name(struct b43legacy_wldev *dev)
{
- struct b43legacy_wl *wl = dev->wl;
+ struct b43legacy_rfkill *rfk = &(dev->wl->rfkill);
- if (!wl->rfkill.rfkill)
+ if (!rfk->registered)
return NULL;
- return rfkill_get_led_name(wl->rfkill.rfkill);
+ return rfkill_get_led_name(rfk->rfkill);
}
void b43legacy_rfkill_init(struct b43legacy_wldev *dev)
struct b43legacy_rfkill *rfk = &(wl->rfkill);
int err;
- snprintf(rfk->name, sizeof(rfk->name),
- "b43legacy-%s", wiphy_name(wl->hw->wiphy));
+ rfk->registered = 0;
+
rfk->rfkill = rfkill_allocate(dev->dev->dev, RFKILL_TYPE_WLAN);
if (!rfk->rfkill)
- goto error;
+ goto out_error;
+ snprintf(rfk->name, sizeof(rfk->name),
+ "b43legacy-%s", wiphy_name(wl->hw->wiphy));
rfk->rfkill->name = rfk->name;
- rfk->rfkill->state = RFKILL_STATE_ON;
+ rfk->rfkill->state = RFKILL_STATE_UNBLOCKED;
rfk->rfkill->data = dev;
rfk->rfkill->toggle_radio = b43legacy_rfkill_soft_toggle;
rfk->rfkill->user_claim_unsupported = 1;
- INIT_WORK(&rfk->notify_work, b43legacy_notify_rfkill_press);
+ rfk->poll_dev = input_allocate_polled_device();
+ if (!rfk->poll_dev) {
+ rfkill_free(rfk->rfkill);
+ goto err_freed_rfk;
+ }
+
+ rfk->poll_dev->private = dev;
+ rfk->poll_dev->poll = b43legacy_rfkill_poll;
+ rfk->poll_dev->poll_interval = 1000; /* msecs */
+
+ rfk->poll_dev->input->name = rfk->name;
+ rfk->poll_dev->input->id.bustype = BUS_HOST;
+ rfk->poll_dev->input->id.vendor = dev->dev->bus->boardinfo.vendor;
+ rfk->poll_dev->input->evbit[0] = BIT(EV_KEY);
+ set_bit(KEY_WLAN, rfk->poll_dev->input->keybit);
err = rfkill_register(rfk->rfkill);
if (err)
- goto error;
+ goto err_free_polldev;
+
+#ifdef CONFIG_RFKILL_INPUT_MODULE
+ /* B43legacy RF-kill isn't useful without the rfkill-input subsystem.
+ * Try to load the module. */
+ err = request_module("rfkill-input");
+ if (err)
+ b43legacywarn(wl, "Failed to load the rfkill-input module."
+ "The built-in radio LED will not work.\n");
+#endif /* CONFIG_RFKILL_INPUT */
+
+ err = input_register_polled_device(rfk->poll_dev);
+ if (err)
+ goto err_unreg_rfk;
+
+ rfk->registered = 1;
return;
-error:
- b43legacywarn(dev->wl, "Failed to initialize the RF-kill button\n");
- rfkill_free(rfk->rfkill);
+err_unreg_rfk:
+ rfkill_unregister(rfk->rfkill);
+err_free_polldev:
+ input_free_polled_device(rfk->poll_dev);
+ rfk->poll_dev = NULL;
+err_freed_rfk:
rfk->rfkill = NULL;
+out_error:
+ rfk->registered = 0;
+ b43legacywarn(wl, "RF-kill button init failed\n");
}
void b43legacy_rfkill_exit(struct b43legacy_wldev *dev)
{
struct b43legacy_rfkill *rfk = &(dev->wl->rfkill);
- if (!rfk->rfkill)
+ if (!rfk->registered)
return;
- cancel_work_sync(&rfk->notify_work);
+ rfk->registered = 0;
+
+ input_unregister_polled_device(rfk->poll_dev);
rfkill_unregister(rfk->rfkill);
- rfkill_free(rfk->rfkill);
+ input_free_polled_device(rfk->poll_dev);
+ rfk->poll_dev = NULL;
rfk->rfkill = NULL;
}
+
git.openpandora.org / pandora-kernel.git / blobdiff