#include "rfkill.h"
#include "b43.h"
+#include <linux/kmod.h>
+
/* Returns TRUE, if the radio is enabled in hardware. */
static bool b43_is_hw_radio_enabled(struct b43_wldev *dev)
return 0;
}
+/* Update the rfkill state */
+static void b43_rfkill_update_state(struct b43_wldev *dev)
+{
+ struct b43_rfkill *rfk = &(dev->wl->rfkill);
+
+ if (!dev->radio_hw_enable) {
+ rfk->rfkill->state = RFKILL_STATE_HARD_BLOCKED;
+ return;
+ }
+
+ if (!dev->phy.radio_on)
+ rfk->rfkill->state = RFKILL_STATE_SOFT_BLOCKED;
+ else
+ rfk->rfkill->state = RFKILL_STATE_UNBLOCKED;
+
+}
+
/* 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;
+ bool report_change = 0;
mutex_lock(&wl->mutex);
- B43_WARN_ON(b43_status(dev) < B43_STAT_INITIALIZED);
+ if (unlikely(b43_status(dev) < B43_STAT_INITIALIZED)) {
+ mutex_unlock(&wl->mutex);
+ return;
+ }
enabled = b43_is_hw_radio_enabled(dev);
if (unlikely(enabled != dev->radio_hw_enable)) {
dev->radio_hw_enable = enabled;
+ report_change = 1;
+ b43_rfkill_update_state(dev);
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);
+ }
+ mutex_unlock(&wl->mutex);
+
+ /* 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 software. */
{
struct b43_wldev *dev = data;
struct b43_wl *wl = dev->wl;
- int err = 0;
-
- /* When RFKILL is registered, it will call back into this callback.
- * wl->mutex will already be locked when this happens.
- * So first trylock. On contention check if we are in initialization.
- * Silently return if that happens to avoid a deadlock. */
- if (mutex_trylock(&wl->mutex) == 0) {
- if (b43_status(dev) < B43_STAT_INITIALIZED)
- return 0;
- mutex_lock(&wl->mutex);
- }
+ int err = -EBUSY;
+
+ if (!wl->rfkill.registered)
+ return 0;
+
+ mutex_lock(&wl->mutex);
if (b43_status(dev) < B43_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)
b43_radio_turn_on(dev);
break;
- case RFKILL_STATE_OFF:
+ case RFKILL_STATE_SOFT_BLOCKED:
if (dev->phy.radio_on)
b43_radio_turn_off(dev, 0);
break;
+ default:
+ b43warn(wl, "Received unexpected rfkill state %d.\n", state);
+ break;
}
out_unlock:
mutex_unlock(&wl->mutex);
char * b43_rfkill_led_name(struct b43_wldev *dev)
{
- struct b43_wl *wl = dev->wl;
+ struct b43_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 b43_rfkill_init(struct b43_wldev *dev)
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);
+ rfk->registered = 0;
+ rfk->rfkill = rfkill_allocate(dev->dev->dev, RFKILL_TYPE_WLAN);
+ if (!rfk->rfkill)
+ goto out_error;
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->state = RFKILL_STATE_UNBLOCKED;
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");
+ if (!rfk->poll_dev) {
+ rfkill_free(rfk->rfkill);
+ goto err_freed_rfk;
+ }
+
+ rfk->poll_dev->private = dev;
+ rfk->poll_dev->poll = b43_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 err_free_polldev;
+
+#ifdef CONFIG_RFKILL_INPUT_MODULE
+ /* B43 RF-kill isn't useful without the rfkill-input subsystem.
+ * Try to load the module. */
+ err = request_module("rfkill-input");
+ if (err)
+ b43warn(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;
+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;
+ b43warn(wl, "RF-kill button init failed\n");
}
-void b43_rfkill_free(struct b43_wldev *dev)
+void b43_rfkill_exit(struct b43_wldev *dev)
{
struct b43_rfkill *rfk = &(dev->wl->rfkill);
+ if (!rfk->registered)
+ return;
+ rfk->registered = 0;
+
+ input_unregister_polled_device(rfk->poll_dev);
+ rfkill_unregister(rfk->rfkill);
input_free_polled_device(rfk->poll_dev);
rfk->poll_dev = NULL;
- rfkill_free(rfk->rfkill);
rfk->rfkill = NULL;
}
projects / linux-2.6 / blobdiff