ath10k: enable adaptive CCA

European Union has made it mandatory that all devices working in 2.4 GHz
has to adhere to the ETSI specification (ETSI EN 300 328 V1.9.1)
beginnig this year. The standard basically speaks about interferences
in 2.4Ghz band.
For example, when 802.11 device detects interference, TX must be stopped
as long as interference is present.

Adaptive CCA is a feature, when enabled the device learns from the
environment and configures CCA levels adaptively. This will improve
detecting interferences and the device can stop trasmissions till the
interference is present eventually leading to good performances in
varying interference conditions.

The patch includes code for enabling adaptive CCA for 10.2.4 firmware on
QCA988X.

Signed-off-by: Maharaja <c_mkenna@qti.qualcomm.com>
Signed-off-by: Manikanta Pubbisetty <c_mpubbi@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index 6e7d7a7f6a97..2b32f02992f3 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -148,6 +148,7 @@ static struct wmi_cmd_map wmi_cmd_map = {
 	.gpio_config_cmdid = WMI_GPIO_CONFIG_CMDID,
 	.gpio_output_cmdid = WMI_GPIO_OUTPUT_CMDID,
 	.pdev_get_temperature_cmdid = WMI_CMD_UNSUPPORTED,
+	.pdev_enable_adaptive_cca_cmdid = WMI_CMD_UNSUPPORTED,
 	.scan_update_request_cmdid = WMI_CMD_UNSUPPORTED,
 	.vdev_standby_response_cmdid = WMI_CMD_UNSUPPORTED,
 	.vdev_resume_response_cmdid = WMI_CMD_UNSUPPORTED,
@@ -313,6 +314,7 @@ static struct wmi_cmd_map wmi_10x_cmd_map = {
 	.gpio_config_cmdid = WMI_10X_GPIO_CONFIG_CMDID,
 	.gpio_output_cmdid = WMI_10X_GPIO_OUTPUT_CMDID,
 	.pdev_get_temperature_cmdid = WMI_CMD_UNSUPPORTED,
+	.pdev_enable_adaptive_cca_cmdid = WMI_CMD_UNSUPPORTED,
 	.scan_update_request_cmdid = WMI_CMD_UNSUPPORTED,
 	.vdev_standby_response_cmdid = WMI_CMD_UNSUPPORTED,
 	.vdev_resume_response_cmdid = WMI_CMD_UNSUPPORTED,
@@ -477,6 +479,7 @@ static struct wmi_cmd_map wmi_10_2_4_cmd_map = {
 	.gpio_config_cmdid = WMI_10_2_GPIO_CONFIG_CMDID,
 	.gpio_output_cmdid = WMI_10_2_GPIO_OUTPUT_CMDID,
 	.pdev_get_temperature_cmdid = WMI_10_2_PDEV_GET_TEMPERATURE_CMDID,
+	.pdev_enable_adaptive_cca_cmdid = WMI_10_2_SET_CCA_PARAMS,
 	.scan_update_request_cmdid = WMI_CMD_UNSUPPORTED,
 	.vdev_standby_response_cmdid = WMI_CMD_UNSUPPORTED,
 	.vdev_resume_response_cmdid = WMI_CMD_UNSUPPORTED,
@@ -1407,6 +1410,7 @@ static struct wmi_cmd_map wmi_10_2_cmd_map = {
 	.gpio_config_cmdid = WMI_10_2_GPIO_CONFIG_CMDID,
 	.gpio_output_cmdid = WMI_10_2_GPIO_OUTPUT_CMDID,
 	.pdev_get_temperature_cmdid = WMI_CMD_UNSUPPORTED,
+	.pdev_enable_adaptive_cca_cmdid = WMI_CMD_UNSUPPORTED,
 	.scan_update_request_cmdid = WMI_CMD_UNSUPPORTED,
 	.vdev_standby_response_cmdid = WMI_CMD_UNSUPPORTED,
 	.vdev_resume_response_cmdid = WMI_CMD_UNSUPPORTED,
@@ -6996,6 +7000,28 @@ unlock:
 		buf[len] = 0;
 }
 
+static struct sk_buff *
+ath10k_wmi_op_gen_pdev_enable_adaptive_cca(struct ath10k *ar, u8 enable,
+					   u32 detect_level, u32 detect_margin)
+{
+	struct wmi_pdev_set_adaptive_cca_params *cmd;
+	struct sk_buff *skb;
+
+	skb = ath10k_wmi_alloc_skb(ar, sizeof(*cmd));
+	if (!skb)
+		return ERR_PTR(-ENOMEM);
+
+	cmd = (struct wmi_pdev_set_adaptive_cca_params *)skb->data;
+	cmd->enable = __cpu_to_le32(enable);
+	cmd->cca_detect_level = __cpu_to_le32(detect_level);
+	cmd->cca_detect_margin = __cpu_to_le32(detect_margin);
+
+	ath10k_dbg(ar, ATH10K_DBG_WMI,
+		   "wmi pdev set adaptive cca params enable:%d detection level:%d detection margin:%d\n",
+		   enable, detect_level, detect_margin);
+	return skb;
+}
+
 static const struct wmi_ops wmi_ops = {
 	.rx = ath10k_wmi_op_rx,
 	.map_svc = wmi_main_svc_map,
@@ -7059,6 +7085,7 @@ static const struct wmi_ops wmi_ops = {
 	/* .gen_prb_tmpl not implemented */
 	/* .gen_p2p_go_bcn_ie not implemented */
 	/* .gen_adaptive_qcs not implemented */
+	/* .gen_pdev_enable_adaptive_cca not implemented */
 };
 
 static const struct wmi_ops wmi_10_1_ops = {
@@ -7125,6 +7152,7 @@ static const struct wmi_ops wmi_10_1_ops = {
 	/* .gen_prb_tmpl not implemented */
 	/* .gen_p2p_go_bcn_ie not implemented */
 	/* .gen_adaptive_qcs not implemented */
+	/* .gen_pdev_enable_adaptive_cca not implemented */
 };
 
 static const struct wmi_ops wmi_10_2_ops = {
@@ -7188,6 +7216,7 @@ static const struct wmi_ops wmi_10_2_ops = {
 	.gen_addba_set_resp = ath10k_wmi_op_gen_addba_set_resp,
 	.gen_delba_send = ath10k_wmi_op_gen_delba_send,
 	.fw_stats_fill = ath10k_wmi_10x_op_fw_stats_fill,
+	/* .gen_pdev_enable_adaptive_cca not implemented */
 };
 
 static const struct wmi_ops wmi_10_2_4_ops = {
@@ -7251,6 +7280,8 @@ static const struct wmi_ops wmi_10_2_4_ops = {
 	.gen_delba_send = ath10k_wmi_op_gen_delba_send,
 	.gen_pdev_get_tpc_config = ath10k_wmi_10_2_4_op_gen_pdev_get_tpc_config,
 	.fw_stats_fill = ath10k_wmi_10x_op_fw_stats_fill,
+	.gen_pdev_enable_adaptive_cca =
+		ath10k_wmi_op_gen_pdev_enable_adaptive_cca,
 	/* .gen_bcn_tmpl not implemented */
 	/* .gen_prb_tmpl not implemented */
 	/* .gen_p2p_go_bcn_ie not implemented */