iwlwifi: add D0i3 references boiler plate

D0i3 is bus power saving feature. It involves the
firmware - the driver needs to send a list of commands
to the firmware before entering this state. Wake up from
d0i3 also requires a few commands to the firmware.

The trigger to enter D0i3 is an idle timeout that will be
implemented later and will most probably rely on RUNTIME_PM
infrastructure.

In order to prevent entrance to D0i3 in critical flows, we
implement here a reference infrastructure. When a ref is
taken, we can't enter D0i3.

PCIe does't support D0i3.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-config.h b/drivers/net/wireless/iwlwifi/iwl-config.h
index 456fcca..2ce89d8 100644
--- a/drivers/net/wireless/iwlwifi/iwl-config.h
+++ b/drivers/net/wireless/iwlwifi/iwl-config.h
@@ -227,6 +227,7 @@ struct iwl_pwr_tx_backoff {
  * @high_temp: Is this NIC is designated to be in high temperature.
  * @host_interrupt_operation_mode: device needs host interrupt operation
  *	mode set
+ * @d0i3: device uses d0i3 instead of d3
  * @nvm_hw_section_num: the ID of the HW NVM section
  * @pwr_tx_backoffs: translation table between power limits and backoffs
  *
@@ -259,6 +260,7 @@ struct iwl_cfg {
 	const bool internal_wimax_coex;
 	const bool host_interrupt_operation_mode;
 	bool high_temp;
+	bool d0i3;
 	u8   nvm_hw_section_num;
 	const struct iwl_pwr_tx_backoff *pwr_tx_backoffs;
 };