iwlwifi: pcie: fix xtal latency for 9560 devices

We were using a very high latency for all 9560 devices so they all
would have time to stabilize.  But this causes the system to be
slighly slower, so we can use the best values for each device.

This requires a new trans cfg struct for devices with longer latency
and some adjustments to the other structs.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20201008181047.34392f98fdb1.I3d3db14f6d1a8ecc547ca6afce8488816bd26081@changeid

diff --git a/drivers/net/wireless/intel/iwlwifi/cfg/9000.c b/drivers/net/wireless/intel/iwlwifi/cfg/9000.c
index f84b8e5..be4acf4 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/cfg/9000.c
+++ b/drivers/net/wireless/intel/iwlwifi/cfg/9000.c
@@ -6,7 +6,7 @@
  * GPL LICENSE SUMMARY
  *
  * Copyright(c) 2015-2017 Intel Deutschland GmbH
- * Copyright (C) 2018 - 2019 Intel Corporation
+ * Copyright(c) 2018 - 2020 Intel Corporation
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as
@@ -20,7 +20,7 @@
  * BSD LICENSE
  *
  * Copyright(c) 2015-2017 Intel Deutschland GmbH
- * Copyright (C) 2018 - 2019 Intel Corporation
+ * Copyright(c) 2018 - 2020 Intel Corporation
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -180,7 +180,16 @@ const struct iwl_cfg_trans_params iwl9560_trans_cfg = {
        .mq_rx_supported = true,
        .rf_id = true,
        .integrated = true,
-       .xtal_latency = 5000,
+       .xtal_latency = 650,
+};
+
+const struct iwl_cfg_trans_params iwl9560_long_latency_trans_cfg = {
+       .device_family = IWL_DEVICE_FAMILY_9000,
+       .base_params = &iwl9000_base_params,
+       .mq_rx_supported = true,
+       .rf_id = true,
+       .integrated = true,
+       .xtal_latency = 2820,
 };
 
 const struct iwl_cfg_trans_params iwl9560_shared_clk_trans_cfg = {
@@ -189,7 +198,7 @@ const struct iwl_cfg_trans_params iwl9560_shared_clk_trans_cfg = {
        .mq_rx_supported = true,
        .rf_id = true,
        .integrated = true,
-       .xtal_latency = 5000,
+       .xtal_latency = 670,
        .extra_phy_cfg_flags = FW_PHY_CFG_SHARED_CLK
 };
 

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-config.h b/drivers/net/wireless/intel/iwlwifi/iwl-config.h
index d03f51b..ca4967b 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/iwl-config.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-config.h
@@ -519,6 +519,7 @@ struct iwl_dev_info {
  */
 extern const struct iwl_cfg_trans_params iwl9000_trans_cfg;
 extern const struct iwl_cfg_trans_params iwl9560_trans_cfg;
+extern const struct iwl_cfg_trans_params iwl9560_long_latency_trans_cfg;
 extern const struct iwl_cfg_trans_params iwl9560_shared_clk_trans_cfg;
 extern const struct iwl_cfg_trans_params iwl_qnj_trans_cfg;
 extern const struct iwl_cfg_trans_params iwl_qu_trans_cfg;

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
index 83811fa..129021f 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
@@ -514,7 +514,7 @@ static const struct pci_device_id iwl_hw_card_ids[] = {
        {IWL_PCI_DEVICE(0x2526, PCI_ANY_ID, iwl9000_trans_cfg)},
        {IWL_PCI_DEVICE(0x271B, PCI_ANY_ID, iwl9000_trans_cfg)},
        {IWL_PCI_DEVICE(0x271C, PCI_ANY_ID, iwl9000_trans_cfg)},
-       {IWL_PCI_DEVICE(0x30DC, PCI_ANY_ID, iwl9560_trans_cfg)},
+       {IWL_PCI_DEVICE(0x30DC, PCI_ANY_ID, iwl9560_long_latency_trans_cfg)},
        {IWL_PCI_DEVICE(0x31DC, PCI_ANY_ID, iwl9560_shared_clk_trans_cfg)},
        {IWL_PCI_DEVICE(0x9DF0, PCI_ANY_ID, iwl9560_trans_cfg)},
        {IWL_PCI_DEVICE(0xA370, PCI_ANY_ID, iwl9560_trans_cfg)},