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+/*
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+ * Copyright (c) 2012-2018 The Linux Foundation. All rights reserved.
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+ *
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+ * Permission to use, copy, modify, and/or distribute this software for
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+ * any purpose with or without fee is hereby granted, provided that the
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+ * above copyright notice and this permission notice appear in all
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+ * copies.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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+ * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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+ * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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+ * PERFORMANCE OF THIS SOFTWARE.
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+ */
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+
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+/**
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+ * DOC: wlan_hdd_green_ap.c
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+ *
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+ * WLAN Host Device Driver Green AP implementation
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+ *
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+ */
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+
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+#include <wlan_hdd_green_ap.h>
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+#include <wlan_hdd_main.h>
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+#include <wlan_policy_mgr_api.h>
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+#include <wlan_green_ap_ucfg_api.h>
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+
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+/**
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+ * hdd_green_ap_check_enable() - to check whether to enable green ap or not
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+ * @hdd_ctx: hdd context
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+ * @enable_green_ap: 1 - enable green ap enabled, 0 - disbale green ap
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+ *
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+ * Return: 0 - success, < 0 - failure
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+ */
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+static int hdd_green_ap_check_enable(struct hdd_context *hdd_ctx,
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+ bool *enable_green_ap)
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+{
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+ uint8_t num_sessions, mode;
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+ QDF_STATUS status;
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+
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+ for (mode = 0;
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+ mode < QDF_MAX_NO_OF_MODE;
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+ mode++) {
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+ if (mode == QDF_SAP_MODE || mode == QDF_P2P_GO_MODE)
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+ continue;
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+
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+ status = policy_mgr_mode_specific_num_active_sessions(
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+ hdd_ctx->hdd_psoc, mode, &num_sessions);
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+ hdd_debug("No. of active sessions for mode: %d is %d",
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+ mode, num_sessions);
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+ if (status != QDF_STATUS_SUCCESS) {
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+ hdd_err("Failed to get num sessions for mode: %d",
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+ mode);
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+ return -EINVAL;
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+ } else if (num_sessions) {
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+ *enable_green_ap = false;
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+ return 0;
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+ }
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+ }
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+ *enable_green_ap = true;
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+ return 0;
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+}
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+
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+void hdd_green_ap_add_sta(struct hdd_context *hdd_ctx)
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+{
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+ wlan_green_ap_add_sta(hdd_ctx->hdd_pdev);
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+}
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+
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+void hdd_green_ap_del_sta(struct hdd_context *hdd_ctx)
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+{
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+ wlan_green_ap_del_sta(hdd_ctx->hdd_pdev);
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+}
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+
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+int hdd_green_ap_enable_egap(struct hdd_context *hdd_ctx)
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+{
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+ QDF_STATUS status;
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+
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+ status = ucfg_green_ap_enable_egap(hdd_ctx->hdd_pdev);
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+ if (QDF_IS_STATUS_ERROR(status)) {
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+ hdd_debug("enhance green ap is not enabled, status %d",
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+ status);
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+ return qdf_status_to_os_return(status);
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+ }
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+
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+ return 0;
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+}
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+
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+int hdd_green_ap_update_config(struct hdd_context *hdd_ctx)
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+{
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+ struct green_ap_user_cfg green_ap_cfg;
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+ struct hdd_config *cfg = hdd_ctx->config;
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+ QDF_STATUS status;
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+
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+ green_ap_cfg.host_enable_egap = cfg->enable_egap;
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+ green_ap_cfg.egap_inactivity_time = cfg->egap_inact_time;
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+ green_ap_cfg.egap_wait_time = cfg->egap_wait_time;
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+ green_ap_cfg.egap_feature_flags = cfg->egap_feature_flag;
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+
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+ status = ucfg_green_ap_update_user_config(hdd_ctx->hdd_pdev,
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+ &green_ap_cfg);
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+ if (status != QDF_STATUS_SUCCESS) {
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+ hdd_err("failed to update green ap user configuration");
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+ return -EINVAL;
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+ }
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+
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+ return 0;
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+}
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+
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+int hdd_green_ap_start_state_mc(struct hdd_context *hdd_ctx,
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+ enum QDF_OPMODE mode, bool is_session_start)
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+{
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+ struct hdd_config *cfg;
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+ bool enable_green_ap = false;
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+ uint8_t num_sap_sessions = 0, num_p2p_go_sessions = 0, ret = 0;
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+
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+ cfg = hdd_ctx->config;
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+ if (!cfg) {
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+ hdd_err("NULL hdd config");
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+ return -EINVAL;
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+ }
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+
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+ if (!cfg->enable2x2 || !cfg->enableGreenAP) {
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+ hdd_info("Green AP support not present: enable2x2: %d, enableGreenAp: %d",
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+ cfg->enable2x2, cfg->enableGreenAP);
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+ return 0;
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+ }
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+
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+ policy_mgr_mode_specific_num_active_sessions(hdd_ctx->hdd_psoc,
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+ QDF_SAP_MODE,
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+ &num_sap_sessions);
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+ policy_mgr_mode_specific_num_active_sessions(hdd_ctx->hdd_psoc,
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+ QDF_P2P_GO_MODE,
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+ &num_p2p_go_sessions);
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+
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+ switch (mode) {
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+ case QDF_STA_MODE:
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+ case QDF_P2P_CLIENT_MODE:
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+ case QDF_IBSS_MODE:
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+ if (!num_sap_sessions && !num_p2p_go_sessions)
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+ return 0;
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+
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+ if (is_session_start) {
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+ hdd_debug("Disabling Green AP");
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+ ucfg_green_ap_set_ps_config(hdd_ctx->hdd_pdev,
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+ false);
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+ wlan_green_ap_stop(hdd_ctx->hdd_pdev);
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+ } else {
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+ ret = hdd_green_ap_check_enable(hdd_ctx,
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+ &enable_green_ap);
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+ if (!ret) {
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+ if (enable_green_ap) {
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+ hdd_debug("Enabling Green AP");
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+ ucfg_green_ap_set_ps_config(
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+ hdd_ctx->hdd_pdev, true);
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+ wlan_green_ap_start(hdd_ctx->hdd_pdev);
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+ }
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+ } else {
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+ hdd_err("Failed to check Green AP enable status");
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+ }
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+ }
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+ break;
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+ case QDF_SAP_MODE:
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+ case QDF_P2P_GO_MODE:
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+ if (is_session_start) {
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+ ret = hdd_green_ap_check_enable(hdd_ctx,
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+ &enable_green_ap);
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+ if (!ret) {
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+ if (enable_green_ap) {
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+ hdd_debug("Enabling Green AP");
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+ ucfg_green_ap_set_ps_config(
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+ hdd_ctx->hdd_pdev, true);
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+ wlan_green_ap_start(hdd_ctx->hdd_pdev);
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+ }
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+ } else {
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+ hdd_err("Failed to check Green AP enable status");
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+ }
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+ } else {
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+ if (!num_sap_sessions && !num_p2p_go_sessions) {
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+ hdd_debug("Disabling Green AP");
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+ ucfg_green_ap_set_ps_config(hdd_ctx->hdd_pdev,
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+ false);
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+ wlan_green_ap_stop(hdd_ctx->hdd_pdev);
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+ }
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+ }
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+ break;
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+ default:
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+ break;
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+ }
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+ return ret;
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+}
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Jeff Johnson