Commit a9dd0c93 authored by Arunmani Alagarsamy's avatar Arunmani Alagarsamy Committed by Chris Friedt
Browse files

drivers: wifi: siwx91x: Support max TX power configuration via Device Tree 

Add support for configuring the maximum TX power for STA and AP modes using
a Device Tree property (`max-tx-power`). If unspecified, the default value
is set to 31 dBm.

Signed-off-by: default avatarArunmani Alagarsamy <arunmani.a@silabs.com>
parent 814a9e68

drivers/wifi/siwx91x/siwx91x_wifi.c

+32 −2
Changes for drivers/wifi/siwx91x/siwx91x_wifi.c: 32 added lines, 2 removed lines.
Original line number Diff line number Diff line
@@ -185,9 +185,21 @@ bool siwx91x_param_changed(struct wifi_iface_status *prev_params, 
	return false;

}



static int siwx91x_set_max_tx_power(const struct siwx91x_config *siwx91x_cfg)

{

	sl_wifi_interface_t interface = sl_wifi_get_default_interface();

	sl_wifi_max_tx_power_t max_tx_power = {

		.scan_tx_power = siwx91x_cfg->scan_tx_power,

		.join_tx_power = siwx91x_cfg->join_tx_power,

	};



	return sl_wifi_set_max_tx_power(interface, max_tx_power);

}



static int siwx91x_mode(const struct device *dev, struct wifi_mode_info *mode)

{

	sl_wifi_interface_t interface = sl_wifi_get_default_interface();

	const struct siwx91x_config *siwx91x_cfg = dev->config;

	struct siwx91x_dev *sidev = dev->data;

	int cur_mode;

	int ret = 0;
@@ -207,6 +219,12 @@ static int siwx91x_mode(const struct device *dev, struct wifi_mode_info *mode) 
			if (ret < 0) {

				return ret;

			}



			ret = siwx91x_set_max_tx_power(siwx91x_cfg);

			if (ret != SL_STATUS_OK) {

				LOG_ERR("Failed to set max tx power:%x", ret);

				return -EINVAL;

			}

		}

		sidev->state = WIFI_STATE_INACTIVE;

	}
@@ -353,6 +371,7 @@ static int siwx91x_get_version(const struct device *dev, struct wifi_version *pa 


static void siwx91x_iface_init(struct net_if *iface)

{

	const struct siwx91x_config *siwx91x_cfg = iface->if_dev->dev->config;

	struct siwx91x_dev *sidev = iface->if_dev->dev->data;

	int ret;
@@ -369,6 +388,12 @@ static void siwx91x_iface_init(struct net_if *iface) 
	sl_wifi_set_callback(SL_WIFI_STATS_RESPONSE_EVENTS, siwx91x_wifi_module_stats_event_handler,

			     sidev);



	ret = siwx91x_set_max_tx_power(siwx91x_cfg);

	if (ret != SL_STATUS_OK) {

		LOG_ERR("Failed to set max tx power:%x", ret);

		return;

	}



	ret = sl_wifi_get_mac_address(SL_WIFI_CLIENT_INTERFACE, &sidev->macaddr);

	if (ret) {

		LOG_ERR("sl_wifi_get_mac_address(): %#04x", ret);
@@ -419,6 +444,11 @@ static const struct net_wifi_mgmt_offload siwx91x_api = { 
	.wifi_mgmt_api = &siwx91x_mgmt,

};



static const struct siwx91x_config siwx91x_cfg = {

	.scan_tx_power = DT_INST_PROP(0, wifi_max_tx_pwr_scan),

	.join_tx_power = DT_INST_PROP(0, wifi_max_tx_pwr_join),

};



static struct siwx91x_dev sidev = {

	.ps_params.enabled = WIFI_PS_DISABLED,

	.ps_params.exit_strategy = WIFI_PS_EXIT_EVERY_TIM,
@@ -427,9 +457,9 @@ static struct siwx91x_dev sidev = { 
};



#ifdef CONFIG_WIFI_SILABS_SIWX91X_NET_STACK_NATIVE

ETH_NET_DEVICE_DT_INST_DEFINE(0, siwx91x_dev_init, NULL, &sidev, NULL,

ETH_NET_DEVICE_DT_INST_DEFINE(0, siwx91x_dev_init, NULL, &sidev, &siwx91x_cfg,

			      CONFIG_WIFI_INIT_PRIORITY, &siwx91x_api, NET_ETH_MTU);

#else

NET_DEVICE_DT_INST_OFFLOAD_DEFINE(0, siwx91x_dev_init, NULL, &sidev, NULL,

NET_DEVICE_DT_INST_OFFLOAD_DEFINE(0, siwx91x_dev_init, NULL, &sidev, &siwx91x_cfg,

				  CONFIG_WIFI_INIT_PRIORITY, &siwx91x_api, NET_ETH_MTU);

#endif

drivers/wifi/siwx91x/siwx91x_wifi.h

+5 −0
Changes for drivers/wifi/siwx91x/siwx91x_wifi.h: 5 added lines, 0 removed lines.
Original line number Diff line number Diff line
@@ -9,6 +9,11 @@ 


#include "sl_si91x_types.h"



struct siwx91x_config {

	uint8_t scan_tx_power;

	uint8_t join_tx_power;

};



struct siwx91x_dev {

	struct net_if *iface;

	sl_mac_address_t macaddr;

dts/bindings/wifi/silabs,siwx91x-wifi.yaml

+16 −0
Changes for dts/bindings/wifi/silabs,siwx91x-wifi.yaml: 16 added lines, 0 removed lines.
Original line number Diff line number Diff line
@@ -5,3 +5,19 @@ 
description: Silabs SiWx91x SoC WiFi



compatible: "silabs,siwx91x-wifi"



properties:

  wifi-max-tx-pwr-scan:

    type: int

    default: 31

    description: |

      Maximum TX power (in dBm) used during Wi‑Fi scanning. Actual

      output may be capped by regulatory or hardware constraints.

      Note: SiWx91x firmware does **not** support per‑rate power.

  wifi-max-tx-pwr-join:

    type: int

    default: 31

    description: |

      Maximum TX power (in dBm) used when joining a Wi‑Fi network.

      Actual output may be capped by regulatory or hardware constraints.

      Note: SiWx91x firmware does **not** support per‑rate power.

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