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| author | Eran Harary <eran.harary@intel.com> | 2015-04-27 10:29:31 +0300 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-04-28 14:58:51 +0300 |
| commit | 8d193ca26cc28019e760b77830295a0c349d90dc (patch) | |
| tree | a6f6ab3f1292c21106fa941c2c9827b065b45370 /drivers/net/wireless/iwlwifi/pcie/trans.c | |
| parent | 553452e5ffc0ed13214a287549627d02d9d7fbdc (diff) | |
| download | talos-op-linux-8d193ca26cc28019e760b77830295a0c349d90dc.tar.gz talos-op-linux-8d193ca26cc28019e760b77830295a0c349d90dc.zip | |
iwlwifi: mvm: don't power off the device between INIT and OPER firmwares
Our device needs two different firmwares: the INIT firmware
and the operational (OPER) firmware. The first one is run
when the driver loads and it returns calibrations results
as well as the NVM. The second one implements the WiFi
protocol.
If the wlan interface is not brought up, the device is put
to low power state: no firmware will be running. When the
interface is brought up, we would run the OPER firmware
only and reuse the results of the run of the INIT firmware
when the driver was loaded. This is changing with this
patch.
We now run the INIT firmware every time mac80211 calls
start(). The penalty for that is minimal since the INIT
firwmare run fast. I now also avoid to power down the device
between the INIT and OPER firmware on certains buses.
The motivation for this change is that there are components
on the device (MFUART) that are triggered by the INIT
firmware and need the device to be powered up in order to
keep running. Powering the device down between the INIT and
OPER firmware would stop these components and prevent them
from running again since they are triggered by the INIT
firmware only.
The new flow allows this and also allows to trigger these
components again when the interface is brought up after
it has been brought down.
Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/pcie/trans.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/trans.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index 6debb0c9111a..47bbf573fdc8 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -1021,7 +1021,7 @@ static void iwl_trans_pcie_fw_alive(struct iwl_trans *trans, u32 scd_addr) iwl_pcie_tx_start(trans, scd_addr); } -static void iwl_trans_pcie_stop_device(struct iwl_trans *trans) +static void iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool low_power) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); bool hw_rfkill, was_hw_rfkill; @@ -1116,7 +1116,7 @@ static void iwl_trans_pcie_stop_device(struct iwl_trans *trans) void iwl_trans_pcie_rf_kill(struct iwl_trans *trans, bool state) { if (iwl_op_mode_hw_rf_kill(trans->op_mode, state)) - iwl_trans_pcie_stop_device(trans); + iwl_trans_pcie_stop_device(trans, true); } static void iwl_trans_pcie_d3_suspend(struct iwl_trans *trans, bool test) @@ -1201,7 +1201,7 @@ static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans, return 0; } -static int iwl_trans_pcie_start_hw(struct iwl_trans *trans) +static int iwl_trans_pcie_start_hw(struct iwl_trans *trans, bool low_power) { bool hw_rfkill; int err; |
