iwlwifi: mvm: add a flag to reduce power command.

Add a flags bitfield in REDUCED_TX_POWER_CMD, and
send it as is to FW.
Signed-off-by: Ayala Barazani <ayala.barazani@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220304131517.55c2f014f5ee.Iceb632f620de959800f979e212f0dc20240f9d38@changeidSigned-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/fw/acpi.c

@@ -537,8 +537,8 @@ IWL_EXPORT_SYMBOL(iwl_sar_select_profile);
 int iwl_sar_get_wrds_table(struct iwl_fw_runtime *fwrt)
 {
 	union acpi_object *wifi_pkg, *table, *data;
-	bool enabled;
 	int ret, tbl_rev;
+	u32 flags;
 	u8 num_chains, num_sub_bands;
 
 	data = iwl_acpi_get_object(fwrt->dev, ACPI_WRDS_METHOD);
@@ -604,7 +604,8 @@ int iwl_sar_get_wrds_table(struct iwl_fw_runtime *fwrt)
 
 	IWL_DEBUG_RADIO(fwrt, "Reading WRDS tbl_rev=%d\n", tbl_rev);
 
-	enabled = !!(wifi_pkg->package.elements[1].integer.value);
+	flags = wifi_pkg->package.elements[1].integer.value;
+	fwrt->reduced_power_flags = flags >> IWL_REDUCE_POWER_FLAGS_POS;
 
 	/* position of the actual table */
 	table = &wifi_pkg->package.elements[2];
@@ -612,7 +613,8 @@ int iwl_sar_get_wrds_table(struct iwl_fw_runtime *fwrt)
 	/* The profile from WRDS is officially profile 1, but goes
 	 * into sar_profiles[0] (because we don't have a profile 0).
 	 */
-	ret = iwl_sar_set_profile(table, &fwrt->sar_profiles[0], enabled,
+	ret = iwl_sar_set_profile(table, &fwrt->sar_profiles[0],
+				  flags & IWL_SAR_ENABLE_MSK,
 				  num_chains, num_sub_bands);
 out_free:
 	kfree(data);

drivers/net/wireless/intel/iwlwifi/fw/acpi.h

@@ -92,6 +92,9 @@
 #define ACPI_PPAG_MIN_HB -16
 #define ACPI_PPAG_MAX_HB 40
 
+#define IWL_SAR_ENABLE_MSK		BIT(0)
+#define IWL_REDUCE_POWER_FLAGS_POS	1
+
 /*
  * The profile for revision 2 is a superset of revision 1, which is in
  * turn a superset of revision 0.  So we can store all revisions

drivers/net/wireless/intel/iwlwifi/fw/api/power.h

 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
 /*
- * Copyright (C) 2012-2014, 2018-2021 Intel Corporation
+ * Copyright (C) 2012-2014, 2018-2022 Intel Corporation
  * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
  * Copyright (C) 2015-2017 Intel Deutschland GmbH
  */
@@ -340,7 +340,7 @@ struct iwl_dev_tx_power_cmd_v5 {
 } __packed; /* TX_REDUCED_POWER_API_S_VER_5 */
 
 /**
- * struct iwl_dev_tx_power_cmd_v5 - TX power reduction command version 5
+ * struct iwl_dev_tx_power_cmd_v6 - TX power reduction command version 6
  * @per_chain: per chain restrictions
  * @enable_ack_reduction: enable or disable close range ack TX power
  *	reduction.
@@ -360,6 +360,28 @@ struct iwl_dev_tx_power_cmd_v6 {
 	__le32 timer_period;
 } __packed; /* TX_REDUCED_POWER_API_S_VER_6 */
 
+/**
+ * struct iwl_dev_tx_power_cmd_v7 - TX power reduction command version 7
+ * @per_chain: per chain restrictions
+ * @enable_ack_reduction: enable or disable close range ack TX power
+ *	reduction.
+ * @per_chain_restriction_changed: is per_chain_restriction has changed
+ *	from last command. used if set_mode is
+ *	IWL_TX_POWER_MODE_SET_SAR_TIMER.
+ *	note: if not changed, the command is used for keep alive only.
+ * @reserved: reserved (padding)
+ * @timer_period: timer in milliseconds. if expires FW will change to default
+ *	BIOS values. relevant if setMode is IWL_TX_POWER_MODE_SET_SAR_TIMER
+ * @flags: reduce power flags.
+ */
+struct iwl_dev_tx_power_cmd_v7 {
+	__le16 per_chain[IWL_NUM_CHAIN_TABLES_V2][IWL_NUM_CHAIN_LIMITS][IWL_NUM_SUB_BANDS_V2];
+	u8 enable_ack_reduction;
+	u8 per_chain_restriction_changed;
+	u8 reserved[2];
+	__le32 timer_period;
+	__le32 flags;
+} __packed; /* TX_REDUCED_POWER_API_S_VER_7 */
 /**
  * struct iwl_dev_tx_power_cmd - TX power reduction command (multiversion)
  * @common: common part of the command
@@ -375,6 +397,7 @@ struct iwl_dev_tx_power_cmd {
 		struct iwl_dev_tx_power_cmd_v4 v4;
 		struct iwl_dev_tx_power_cmd_v5 v5;
 		struct iwl_dev_tx_power_cmd_v6 v6;
+		struct iwl_dev_tx_power_cmd_v7 v7;
 	};
 };
 

drivers/net/wireless/intel/iwlwifi/fw/runtime.h

 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
 /*
  * Copyright (C) 2017 Intel Deutschland GmbH
- * Copyright (C) 2018-2020 Intel Corporation
+ * Copyright (C) 2018-2022 Intel Corporation
  */
 #ifndef __iwl_fw_runtime_h__
 #define __iwl_fw_runtime_h__
@@ -163,6 +163,7 @@ struct iwl_fw_runtime {
 	u32 ppag_ver;
 	struct iwl_sar_offset_mapping_cmd sgom_table;
 	bool sgom_enabled;
+	u8 reduced_power_flags;
 #endif
 };
 

drivers/net/wireless/intel/iwlwifi/mvm/fw.c

@@ -806,8 +806,12 @@ int iwl_mvm_sar_select_profile(struct iwl_mvm *mvm, int prof_a, int prof_b)
 	u32 n_subbands;
 	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id,
 					   IWL_FW_CMD_VER_UNKNOWN);
-
-	if (cmd_ver == 6) {
+	if (cmd_ver == 7) {
+		len = sizeof(cmd.v7);
+		n_subbands = IWL_NUM_SUB_BANDS_V2;
+		per_chain = cmd.v7.per_chain[0][0];
+		cmd.v7.flags = cpu_to_le32(mvm->fwrt.reduced_power_flags);
+	} else if (cmd_ver == 6) {
 		len = sizeof(cmd.v6);
 		n_subbands = IWL_NUM_SUB_BANDS_V2;
 		per_chain = cmd.v6.per_chain[0][0];

drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c

@@ -1336,7 +1336,9 @@ static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 	if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
 		cmd.common.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
 
-	if (cmd_ver == 6)
+	if (cmd_ver == 7)
+		len = sizeof(cmd.v7);
+	else if (cmd_ver == 6)
 		len = sizeof(cmd.v6);
 	else if (fw_has_api(&mvm->fw->ucode_capa,
 			    IWL_UCODE_TLV_API_REDUCE_TX_POWER))