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author | Henrique de Moraes Holschuh <hmh@hmh.eng.br> | 2008-07-31 10:53:57 -0300 |
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committer | John W. Linville <linville@tuxdriver.com> | 2008-08-01 15:31:32 -0400 |
commit | 6e28fbef0f330d7c1cade345eeae003d4e5d6070 (patch) | |
tree | 69d5f4e32a6ed95eb2bdc89678ca87d60274d2fb /net/rfkill | |
parent | f860ee26db51c478fd70039bd4902912a8d93993 (diff) | |
download | linux-6e28fbef0f330d7c1cade345eeae003d4e5d6070.tar.gz linux-6e28fbef0f330d7c1cade345eeae003d4e5d6070.tar.bz2 linux-6e28fbef0f330d7c1cade345eeae003d4e5d6070.zip |
rfkill: query EV_SW states when rfkill-input (re)?connects to a input device
Every time a new input device that is capable of one of the
rfkill EV_SW events (currently only SW_RFKILL_ALL) is connected to
rfkill-input, we must check the states of the input EV_SW switches
and take action. Otherwise, we will ignore the initial switch state.
We also need to re-check the states of the EV_SW switches after
a device that was under an exclusive grab is released back to us,
since we got no input events from that device while it was grabbed.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/rfkill')
-rw-r--r-- | net/rfkill/rfkill-input.c | 54 |
1 files changed, 39 insertions, 15 deletions
diff --git a/net/rfkill/rfkill-input.c b/net/rfkill/rfkill-input.c index 8aa822730145..e5b69556bb5b 100644 --- a/net/rfkill/rfkill-input.c +++ b/net/rfkill/rfkill-input.c @@ -109,6 +109,25 @@ static DEFINE_RFKILL_TASK(rfkill_uwb, RFKILL_TYPE_UWB); static DEFINE_RFKILL_TASK(rfkill_wimax, RFKILL_TYPE_WIMAX); static DEFINE_RFKILL_TASK(rfkill_wwan, RFKILL_TYPE_WWAN); +static void rfkill_schedule_evsw_rfkillall(int state) +{ + /* EVERY radio type. state != 0 means radios ON */ + /* handle EPO (emergency power off) through shortcut */ + if (state) { + rfkill_schedule_set(&rfkill_wwan, + RFKILL_STATE_UNBLOCKED); + rfkill_schedule_set(&rfkill_wimax, + RFKILL_STATE_UNBLOCKED); + rfkill_schedule_set(&rfkill_uwb, + RFKILL_STATE_UNBLOCKED); + rfkill_schedule_set(&rfkill_bt, + RFKILL_STATE_UNBLOCKED); + rfkill_schedule_set(&rfkill_wlan, + RFKILL_STATE_UNBLOCKED); + } else + rfkill_schedule_epo(); +} + static void rfkill_event(struct input_handle *handle, unsigned int type, unsigned int code, int data) { @@ -132,21 +151,7 @@ static void rfkill_event(struct input_handle *handle, unsigned int type, } else if (type == EV_SW) { switch (code) { case SW_RFKILL_ALL: - /* EVERY radio type. data != 0 means radios ON */ - /* handle EPO (emergency power off) through shortcut */ - if (data) { - rfkill_schedule_set(&rfkill_wwan, - RFKILL_STATE_UNBLOCKED); - rfkill_schedule_set(&rfkill_wimax, - RFKILL_STATE_UNBLOCKED); - rfkill_schedule_set(&rfkill_uwb, - RFKILL_STATE_UNBLOCKED); - rfkill_schedule_set(&rfkill_bt, - RFKILL_STATE_UNBLOCKED); - rfkill_schedule_set(&rfkill_wlan, - RFKILL_STATE_UNBLOCKED); - } else - rfkill_schedule_epo(); + rfkill_schedule_evsw_rfkillall(data); break; default: break; @@ -168,6 +173,7 @@ static int rfkill_connect(struct input_handler *handler, struct input_dev *dev, handle->handler = handler; handle->name = "rfkill"; + /* causes rfkill_start() to be called */ error = input_register_handle(handle); if (error) goto err_free_handle; @@ -185,6 +191,23 @@ static int rfkill_connect(struct input_handler *handler, struct input_dev *dev, return error; } +static void rfkill_start(struct input_handle *handle) +{ + /* Take event_lock to guard against configuration changes, we + * should be able to deal with concurrency with rfkill_event() + * just fine (which event_lock will also avoid). */ + spin_lock_irq(&handle->dev->event_lock); + + if (test_bit(EV_SW, handle->dev->evbit)) { + if (test_bit(SW_RFKILL_ALL, handle->dev->swbit)) + rfkill_schedule_evsw_rfkillall(test_bit(SW_RFKILL_ALL, + handle->dev->sw)); + /* add resync for further EV_SW events here */ + } + + spin_unlock_irq(&handle->dev->event_lock); +} + static void rfkill_disconnect(struct input_handle *handle) { input_close_device(handle); @@ -225,6 +248,7 @@ static struct input_handler rfkill_handler = { .event = rfkill_event, .connect = rfkill_connect, .disconnect = rfkill_disconnect, + .start = rfkill_start, .name = "rfkill", .id_table = rfkill_ids, }; |