iwlwifi: mvm: stop using DEVICE_POWER_FLAGS_CAM_MSK

The firmware has always treated these two bits to mean that
powersave is enabled when POWER_SAVE_ENA is set and CAM is
clear; it doesn't use them in any non-combined way.

Therefore, it's pointless to send it two bits, and the API
should be cleaned up. Prepare the driver by removing the CAM
bit and using only POWER_SAVE_ENA to indicate whether PS is
enabled or not.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

2 files changed, 4 insertions, 10 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/fw-api-power.h b/drivers/net/wireless/iwlwifi/mvm/fw-api-power.h
index 7005fa4be74a..c8f3e2536cbb 100644
--- a/drivers/net/wireless/iwlwifi/mvm/fw-api-power.h
+++ b/drivers/net/wireless/iwlwifi/mvm/fw-api-power.h
@@ -192,16 +192,10 @@ struct iwl_powertable_cmd {
 /**
  * enum iwl_device_power_flags - masks for device power command flags
  * @DEVIC_POWER_FLAGS_POWER_SAVE_ENA_MSK: '1' Allow to save power by turning off
- *      receiver and transmitter. '0' - does not allow. This flag should be
- *      always set to '1' unless one need to disable actual power down for debug
- *      purposes.
- * @DEVICE_POWER_FLAGS_CAM_MSK: '1' CAM (Continuous Active Mode) is set, meaning
- *      that power management is disabled. '0' Power management is enabled, one
- *      of power schemes is applied.
+ *      receiver and transmitter. '0' - does not allow.
 */
 enum iwl_device_power_flags {
         DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK   = BIT(0),
-        DEVICE_POWER_FLAGS_CAM_MSK              = BIT(13),
 };
 
 /**
diff --git a/drivers/net/wireless/iwlwifi/mvm/power.c b/drivers/net/wireless/iwlwifi/mvm/power.c
index 21a858dfcc26..723b537341c4 100644
--- a/drivers/net/wireless/iwlwifi/mvm/power.c
+++ b/drivers/net/wireless/iwlwifi/mvm/power.c
@@ -471,14 +471,14 @@ static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm,
 int iwl_mvm_power_update_device(struct iwl_mvm *mvm)
 {
         struct iwl_device_power_cmd cmd = {
-                .flags = cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK),
+                .flags = 0,
         };
 
         if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM)
                 mvm->ps_disabled = true;
 
-        if (mvm->ps_disabled)
-                cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_CAM_MSK);
+        if (!mvm->ps_disabled)
+                cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
 
 #ifdef CONFIG_IWLWIFI_DEBUGFS
         if ((mvm->cur_ucode == IWL_UCODE_WOWLAN) ? mvm->disable_power_off_d3 :