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authorHans de Goede <hdegoede@redhat.com>2013-11-17 14:00:23 +0100
committerMatthew Garrett <matthew.garrett@nebula.com>2013-11-20 18:50:48 -0500
commit04c9a3a06c47b337b90a91e458716262cc45b103 (patch)
tree3db67324dc6c1b5021e383d41e253261bc5638de /drivers/platform/x86
parent4d39d88ceb83e88953a76df8b1fa10f43f328038 (diff)
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>
Diffstat (limited to 'drivers/platform/x86')
-rw-r--r--drivers/platform/x86/dell-laptop.c14
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);