diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2013-11-17 14:00:23 +0100 |
|---|---|---|
| committer | Matthew Garrett <matthew.garrett@nebula.com> | 2013-11-20 18:50:48 -0500 |
| commit | 04c9a3a06c47b337b90a91e458716262cc45b103 (patch) | |
| tree | 3db67324dc6c1b5021e383d41e253261bc5638de | |
| parent | 4d39d88ceb83e88953a76df8b1fa10f43f328038 (diff) | |
| download | linux-04c9a3a06c47b337b90a91e458716262cc45b103.tar.gz | |
dell-laptop: Sync current block state to BIOS on hw switch change
This is necessary for 3 reasons:
1) To apply sw_state changes made while hw-blocked
2) To set all the blocked bits for hw-switch controlled radios to 1 when the
switch gets changed to off, this is necessary on some models to actually
turn the radio status LEDs off.
3) On some models non hw-switch controlled radios will have their block bit
cleared (potentially undoing a soft-block) on hw-switch toggle, this
restores the sw-block in this case.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
| -rw-r--r-- | drivers/platform/x86/dell-laptop.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c index 834f499a6aec..7f59624d805d 100644 --- a/drivers/platform/x86/dell-laptop.c +++ b/drivers/platform/x86/dell-laptop.c @@ -422,10 +422,16 @@ out: return 0; } +/* Must be called with the buffer held */ static void dell_rfkill_update_sw_state(struct rfkill *rfkill, int radio, int status) { - if (!(status & BIT(0))) { + if (status & BIT(0)) { + /* Has hw-switch, sync sw_state to BIOS */ + int block = rfkill_blocked(rfkill); + buffer->input[0] = (1 | (radio << 8) | (block << 16)); + dell_send_request(buffer, 17, 11); + } else { /* No hw-switch, sync BIOS state to sw_state */ rfkill_set_sw_state(rfkill, !!(status & BIT(radio + 16))); } @@ -445,9 +451,10 @@ static void dell_rfkill_query(struct rfkill *rfkill, void *data) get_buffer(); dell_send_request(buffer, 17, 11); status = buffer->output[1]; - release_buffer(); dell_rfkill_update_hw_state(rfkill, (unsigned long)data, status); + + release_buffer(); } static const struct rfkill_ops dell_rfkill_ops = { @@ -531,7 +538,6 @@ static void dell_update_rfkill(struct work_struct *ignored) get_buffer(); dell_send_request(buffer, 17, 11); status = buffer->output[1]; - release_buffer(); if (wifi_rfkill) { dell_rfkill_update_hw_state(wifi_rfkill, 1, status); @@ -545,6 +551,8 @@ static void dell_update_rfkill(struct work_struct *ignored) dell_rfkill_update_hw_state(wwan_rfkill, 3, status); dell_rfkill_update_sw_state(wwan_rfkill, 3, status); } + + release_buffer(); } static DECLARE_DELAYED_WORK(dell_rfkill_work, dell_update_rfkill); |