From 04c9a3a06c47b337b90a91e458716262cc45b103 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sun, 17 Nov 2013 14:00:23 +0100 Subject: 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 Signed-off-by: Matthew Garrett --- drivers/platform/x86/dell-laptop.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'drivers/platform') 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); -- cgit v1.2.3-58-ga151