diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2017-05-10 12:31:06 +0300 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2017-06-29 13:26:24 +0300 |
| commit | 565291c60a3592bd1b6683d2c848dd165a6a3e76 (patch) | |
| tree | cf1820d4a8a953c24c7c0c6ae048f58f119513a9 /drivers/net/wireless/intel/iwlwifi/pcie/rx.c | |
| parent | 779e0513c76e21b62e2ef907f8cfc48f9f41f734 (diff) | |
| download | linux-565291c60a3592bd1b6683d2c848dd165a6a3e76.tar.xz | |
iwlwifi: pcie: only apply retention workaround on 9000-series A-step
Due to a hardware issue, certain power saving had to be
disabled. However, this issue was fixed in B-step, so the
workaround only needs to apply to A-step.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie/rx.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c index a5c0f69423d2..cd109740632d 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c @@ -761,6 +761,15 @@ static void iwl_pcie_rx_hw_init(struct iwl_trans *trans, struct iwl_rxq *rxq) void iwl_pcie_enable_rx_wake(struct iwl_trans *trans, bool enable) { + if (trans->cfg->device_family != IWL_DEVICE_FAMILY_9000) + return; + + if (CSR_HW_REV_STEP(trans->hw_rev) != SILICON_A_STEP) + return; + + if (!trans->cfg->integrated) + return; + /* * Turn on the chicken-bits that cause MAC wakeup for RX-related * values. @@ -768,12 +777,10 @@ void iwl_pcie_enable_rx_wake(struct iwl_trans *trans, bool enable) * bug where shadow registers are not in the retention list and their * value is lost when NIC powers down */ - if (trans->cfg->integrated) { - iwl_set_bit(trans, CSR_MAC_SHADOW_REG_CTRL, - CSR_MAC_SHADOW_REG_CTRL_RX_WAKE); - iwl_set_bit(trans, CSR_MAC_SHADOW_REG_CTL2, - CSR_MAC_SHADOW_REG_CTL2_RX_WAKE); - } + iwl_set_bit(trans, CSR_MAC_SHADOW_REG_CTRL, + CSR_MAC_SHADOW_REG_CTRL_RX_WAKE); + iwl_set_bit(trans, CSR_MAC_SHADOW_REG_CTL2, + CSR_MAC_SHADOW_REG_CTL2_RX_WAKE); } static void iwl_pcie_rx_mq_hw_init(struct iwl_trans *trans) |