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  2.   patches.suse
  3.   iwlwifi-add-shared-clock-PHY-config-flag-for-some-de
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From 86a2b2043af79deff5cf000c5a08847faa4f2ee0 Mon Sep 17 00:00:00 2001
From: Luca Coelho <luciano.coelho@intel.com>
Date: Wed, 21 Feb 2018 22:18:59 +0200
Subject: [PATCH] iwlwifi: add shared clock PHY config flag for some devices
Git-commit: 86a2b2043af79deff5cf000c5a08847faa4f2ee0
Patch-mainline: v4.16
References: bsc#1051510

Some devices use a shared clock which is very sensitive to variations
and cause trouble in some situations.  We need to set a bit in the phy
configuration to indicate that to the FW.  To make this generic, add a
extra_phy_config_flags element to the device configuration and OR it
into the phy_cfg before sending it to the firmware.  And also create a
set of configurations for devices that use shared clocks and need this
extra bit to be set.

Fixes: c62446d2b028 ("iwlwifi: add new 9460 series PCI IDs")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/wireless/intel/iwlwifi/cfg/9000.c   |   62 ++++++++++++++++++++++++
 drivers/net/wireless/intel/iwlwifi/fw/file.h    |    1 
 drivers/net/wireless/intel/iwlwifi/iwl-config.h |    5 +
 drivers/net/wireless/intel/iwlwifi/mvm/fw.c     |    4 +
 drivers/net/wireless/intel/iwlwifi/pcie/drv.c   |   38 +++++++-------
 5 files changed, 91 insertions(+), 19 deletions(-)

--- a/drivers/net/wireless/intel/iwlwifi/cfg/9000.c
+++ b/drivers/net/wireless/intel/iwlwifi/cfg/9000.c
@@ -53,6 +53,7 @@
 #include <linux/stringify.h>
 #include "iwl-config.h"
 #include "iwl-agn-hw.h"
+#include "fw/file.h"
 
 /* Highest firmware API version supported */
 #define IWL9000_UCODE_API_MAX	36
@@ -265,6 +266,67 @@ const struct iwl_cfg iwl9560_2ac_cfg_soc
 	.integrated = true,
 	.soc_latency = 5000,
 };
+
+const struct iwl_cfg iwl9460_2ac_cfg_shared_clk = {
+	.name = "Intel(R) Dual Band Wireless AC 9460",
+	.fw_name_pre = IWL9000A_FW_PRE,
+	.fw_name_pre_b_or_c_step = IWL9000B_FW_PRE,
+	.fw_name_pre_rf_next_step = IWL9000RFB_FW_PRE,
+	IWL_DEVICE_9000,
+	.ht_params = &iwl9000_ht_params,
+	.nvm_ver = IWL9000_NVM_VERSION,
+	.nvm_calib_ver = IWL9000_TX_POWER_VERSION,
+	.max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K,
+	.integrated = true,
+	.soc_latency = 5000,
+	.extra_phy_cfg_flags = FW_PHY_CFG_SHARED_CLK
+};
+
+const struct iwl_cfg iwl9461_2ac_cfg_shared_clk = {
+	.name = "Intel(R) Dual Band Wireless AC 9461",
+	.fw_name_pre = IWL9000A_FW_PRE,
+	.fw_name_pre_b_or_c_step = IWL9000B_FW_PRE,
+	.fw_name_pre_rf_next_step = IWL9000RFB_FW_PRE,
+	IWL_DEVICE_9000,
+	.ht_params = &iwl9000_ht_params,
+	.nvm_ver = IWL9000_NVM_VERSION,
+	.nvm_calib_ver = IWL9000_TX_POWER_VERSION,
+	.max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K,
+	.integrated = true,
+	.soc_latency = 5000,
+	.extra_phy_cfg_flags = FW_PHY_CFG_SHARED_CLK
+};
+
+const struct iwl_cfg iwl9462_2ac_cfg_shared_clk = {
+	.name = "Intel(R) Dual Band Wireless AC 9462",
+	.fw_name_pre = IWL9000A_FW_PRE,
+	.fw_name_pre_b_or_c_step = IWL9000B_FW_PRE,
+	.fw_name_pre_rf_next_step = IWL9000RFB_FW_PRE,
+	IWL_DEVICE_9000,
+	.ht_params = &iwl9000_ht_params,
+	.nvm_ver = IWL9000_NVM_VERSION,
+	.nvm_calib_ver = IWL9000_TX_POWER_VERSION,
+	.max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K,
+	.integrated = true,
+	.soc_latency = 5000,
+	.extra_phy_cfg_flags = FW_PHY_CFG_SHARED_CLK
+};
+
+const struct iwl_cfg iwl9560_2ac_cfg_shared_clk = {
+	.name = "Intel(R) Dual Band Wireless AC 9560",
+	.fw_name_pre = IWL9000A_FW_PRE,
+	.fw_name_pre_b_or_c_step = IWL9000B_FW_PRE,
+	.fw_name_pre_rf_next_step = IWL9000RFB_FW_PRE,
+	IWL_DEVICE_9000,
+	.ht_params = &iwl9000_ht_params,
+	.nvm_ver = IWL9000_NVM_VERSION,
+	.nvm_calib_ver = IWL9000_TX_POWER_VERSION,
+	.max_ht_ampdu_exponent = IEEE80211_HT_MAX_AMPDU_64K,
+	.integrated = true,
+	.soc_latency = 5000,
+	.extra_phy_cfg_flags = FW_PHY_CFG_SHARED_CLK
+};
+
 MODULE_FIRMWARE(IWL9000A_MODULE_FIRMWARE(IWL9000_UCODE_API_MAX));
 MODULE_FIRMWARE(IWL9000B_MODULE_FIRMWARE(IWL9000_UCODE_API_MAX));
 MODULE_FIRMWARE(IWL9000RFB_MODULE_FIRMWARE(IWL9000_UCODE_API_MAX));
--- a/drivers/net/wireless/intel/iwlwifi/fw/file.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/file.h
@@ -434,6 +434,7 @@ enum iwl_fw_phy_cfg {
 	FW_PHY_CFG_TX_CHAIN = 0xf << FW_PHY_CFG_TX_CHAIN_POS,
 	FW_PHY_CFG_RX_CHAIN_POS = 20,
 	FW_PHY_CFG_RX_CHAIN = 0xf << FW_PHY_CFG_RX_CHAIN_POS,
+	FW_PHY_CFG_SHARED_CLK = BIT(31),
 };
 
 #define IWL_UCODE_MAX_CS		1
--- a/drivers/net/wireless/intel/iwlwifi/iwl-config.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-config.h
@@ -398,6 +398,7 @@ struct iwl_cfg {
 	u8 ucode_api_max;
 	u8 ucode_api_min;
 	u32 min_umac_error_event_table;
+	u32 extra_phy_cfg_flags;
 };
 
 /*
@@ -477,6 +478,10 @@ extern const struct iwl_cfg iwl9460_2ac_
 extern const struct iwl_cfg iwl9461_2ac_cfg_soc;
 extern const struct iwl_cfg iwl9462_2ac_cfg_soc;
 extern const struct iwl_cfg iwl9560_2ac_cfg_soc;
+extern const struct iwl_cfg iwl9460_2ac_cfg_shared_clk;
+extern const struct iwl_cfg iwl9461_2ac_cfg_shared_clk;
+extern const struct iwl_cfg iwl9462_2ac_cfg_shared_clk;
+extern const struct iwl_cfg iwl9560_2ac_cfg_shared_clk;
 extern const struct iwl_cfg iwl22000_2ac_cfg_hr;
 extern const struct iwl_cfg iwl22000_2ac_cfg_hr_cdb;
 extern const struct iwl_cfg iwl22000_2ac_cfg_jf;
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
@@ -433,6 +433,10 @@ static int iwl_send_phy_cfg_cmd(struct i
 
 	/* Set parameters */
 	phy_cfg_cmd.phy_cfg = cpu_to_le32(iwl_mvm_get_phy_config(mvm));
+
+	/* set flags extra PHY configuration flags from the device's cfg */
+	phy_cfg_cmd.phy_cfg |= cpu_to_le32(mvm->cfg->extra_phy_cfg_flags);
+
 	phy_cfg_cmd.calib_control.event_trigger =
 		mvm->fw->default_calib[ucode_type].event_trigger;
 	phy_cfg_cmd.calib_control.flow_trigger =
--- a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
@@ -579,25 +579,25 @@ static const struct pci_device_id iwl_hw
 	{IWL_PCI_DEVICE(0x30DC, 0x0264, iwl9461_2ac_cfg_soc)},
 	{IWL_PCI_DEVICE(0x30DC, 0x02A0, iwl9462_2ac_cfg_soc)},
 	{IWL_PCI_DEVICE(0x30DC, 0x02A4, iwl9462_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x0030, iwl9560_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x0034, iwl9560_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x0038, iwl9560_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x003C, iwl9560_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x0060, iwl9460_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x0064, iwl9461_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x00A0, iwl9462_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x00A4, iwl9462_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x0230, iwl9560_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x0234, iwl9560_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x0238, iwl9560_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x023C, iwl9560_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x0260, iwl9461_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x0264, iwl9461_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x02A0, iwl9462_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x02A4, iwl9462_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x4030, iwl9560_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x4034, iwl9560_2ac_cfg_soc)},
-	{IWL_PCI_DEVICE(0x31DC, 0x40A4, iwl9462_2ac_cfg_soc)},
+	{IWL_PCI_DEVICE(0x31DC, 0x0030, iwl9560_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x0034, iwl9560_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x0038, iwl9560_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x003C, iwl9560_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x0060, iwl9460_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x0064, iwl9461_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x00A0, iwl9462_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x00A4, iwl9462_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x0230, iwl9560_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x0234, iwl9560_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x0238, iwl9560_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x023C, iwl9560_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x0260, iwl9461_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x0264, iwl9461_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x02A0, iwl9462_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x02A4, iwl9462_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x4030, iwl9560_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x4034, iwl9560_2ac_cfg_shared_clk)},
+	{IWL_PCI_DEVICE(0x31DC, 0x40A4, iwl9462_2ac_cfg_shared_clk)},
 	{IWL_PCI_DEVICE(0x34F0, 0x0030, iwl9560_2ac_cfg_soc)},
 	{IWL_PCI_DEVICE(0x34F0, 0x0034, iwl9560_2ac_cfg_soc)},
 	{IWL_PCI_DEVICE(0x34F0, 0x02A4, iwl9462_2ac_cfg_soc)},
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