qcacld-3.0: Create wifi features sysfs file

Based on new requirement, create wifi features sysfs file.

Change-Id: I4ff20e515f87ffc43f9f315582340922106e990f
CRs-Fixed: 3262797

Kbuild

@@ -413,6 +413,9 @@ endif
 ifeq ($(CONFIG_WLAN_DUMP_IN_PROGRESS), y)
 HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_dump_in_progress.o
 endif
+ifeq ($(CONFIG_FEATURE_SET), y)
+HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_wifi_features.o
+endif
 ifeq ($(CONFIG_WLAN_BMISS), y)
 HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_bmiss.o
 endif

core/hdd/inc/wlan_hdd_sysfs_wifi_features.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#if !defined(WLAN_HDD_SYSFS_WIFI_FEATURES_H)
+#define WLAN_HDD_SYSFS_WIFI_FEATURES_H
+/**
+ * DOC: wlan_hdd_sysfs_wifi_features.h
+ *
+ * Wifi features declarations
+ */
+
+#if defined(WLAN_SYSFS) && defined(FEATURE_SET)
+/**
+ * hdd_sysfs_create_wifi_feature_interface() - API to create
+ * wifi feature sysfs file
+ * @wifi_kobject: sysfs wifi kobject
+ *
+ * Return: None
+ */
+void hdd_sysfs_create_wifi_feature_interface(struct kobject *wifi_kobject);
+
+/**
+ * hdd_sysfs_destroy_wifi_feature_interface() - API to destroy
+ * wifi feature sysfs file
+ * @wifi_kobject: sysfs wifi kobject
+ *
+ * Return: None
+ */
+void hdd_sysfs_destroy_wifi_feature_interface(struct kobject *wifi_kobject);
+#else
+static inline void
+hdd_sysfs_create_wifi_feature_interface(struct kobject *wifi_kobject)
+{
+}
+
+static inline void
+hdd_sysfs_destroy_wifi_feature_interface(struct kobject *wifi_kobject)
+{
+}
+#endif
+#endif

core/hdd/src/wlan_hdd_sysfs.c

@@ -85,6 +85,7 @@
 #include <wlan_hdd_sysfs_bmiss.h>
 #include <wlan_hdd_sysfs_get_freq_for_pwr.h>
 #include <wlan_hdd_sysfs_dp_tx_delay_stats.h>
+#include <wlan_hdd_sysfs_wifi_features.h>
 
 #define MAX_PSOC_ID_SIZE 10
 
@@ -880,6 +881,7 @@ void hdd_create_sysfs_files(struct hdd_context *hdd_ctx)
 	hdd_sysfs_mem_stats_create(wlan_kobject);
 	hdd_sysfs_create_wifi_root_obj(hdd_ctx);
 	if  (QDF_GLOBAL_MISSION_MODE == hdd_get_conparam()) {
+		hdd_sysfs_create_wifi_feature_interface(wifi_kobject);
 		hdd_sysfs_create_powerstats_interface();
 		hdd_sysfs_create_dump_in_progress_interface(wifi_kobject);
 		hdd_sysfs_fw_mode_config_create(driver_kobject);
@@ -922,6 +924,7 @@ void hdd_destroy_sysfs_files(void)
 		hdd_sysfs_fw_mode_config_destroy(driver_kobject);
 		hdd_sysfs_destroy_dump_in_progress_interface(wifi_kobject);
 		hdd_sysfs_destroy_powerstats_interface();
+		hdd_sysfs_destroy_wifi_feature_interface(wifi_kobject);
 	}
 	hdd_sysfs_destroy_wifi_root_obj();
 	hdd_sysfs_mem_stats_destroy(wlan_kobject);

core/hdd/src/wlan_hdd_sysfs_wifi_features.c

@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/**
+ * DOC: wlan_hdd_sysfs_wifi_features.c
+ *
+ * Wifi Feature sysfs implementation
+ */
+
+#include <linux/kobject.h>
+
+#include "wlan_hdd_includes.h"
+#include "wlan_hdd_sysfs_wifi_features.h"
+#include "wlan_hdd_sysfs.h"
+#include "osif_sync.h"
+
+static ssize_t  __hdd_sysfs_feature_set_show(struct hdd_context *hdd_ctx,
+					     struct kobj_attribute *attr,
+					     char *buf)
+{
+	ssize_t ret_val = 0;
+	uint8_t i;
+
+	for (i = 0; i < hdd_ctx->oem_data_len; i++)
+		ret_val += scnprintf(buf + ret_val, PAGE_SIZE - ret_val, "%.2x",
+				     hdd_ctx->oem_data[i]);
+	buf[ret_val] = '\n';
+
+	return ret_val;
+}
+
+static ssize_t hdd_sysfs_feature_set_show(struct kobject *kobj,
+					  struct kobj_attribute *attr,
+					  char *buf)
+{
+	struct osif_psoc_sync *psoc_sync;
+	struct hdd_context *hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
+	ssize_t errno_size;
+	int ret;
+
+	ret = wlan_hdd_validate_context(hdd_ctx);
+	if (ret != 0)
+		return ret;
+
+	errno_size = osif_psoc_sync_op_start(wiphy_dev(hdd_ctx->wiphy),
+					     &psoc_sync);
+	if (errno_size)
+		return errno_size;
+
+	errno_size = __hdd_sysfs_feature_set_show(hdd_ctx, attr, buf);
+
+	osif_psoc_sync_op_stop(psoc_sync);
+
+	return errno_size;
+}
+
+static struct kobj_attribute feature_set_attribute;
+
+void hdd_sysfs_create_wifi_feature_interface(struct kobject *wifi_kobject)
+{
+	struct hdd_context *hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
+	int error;
+
+	if (!hdd_ctx)
+		return;
+
+	if (!wifi_kobject) {
+		hdd_err("could not get wifi kobject!");
+		return;
+	}
+	if (!hdd_ctx->oem_data_len) {
+		hdd_err("Invalid oem data length");
+		return;
+	}
+	feature_set_attribute.attr.name = hdd_ctx->file_name;
+	feature_set_attribute.attr.mode = VERIFY_OCTAL_PERMISSIONS(0660);
+	feature_set_attribute.show = hdd_sysfs_feature_set_show;
+	feature_set_attribute.store = NULL;
+
+	error = sysfs_create_file(wifi_kobject,
+				  &feature_set_attribute.attr);
+	if (error)
+		hdd_err("could not create dump in progress sysfs file");
+}
+
+void hdd_sysfs_destroy_wifi_feature_interface(struct kobject *wifi_kobject)
+{
+	if (!wifi_kobject) {
+		hdd_err("could not get wifi kobject!");
+		return;
+	}
+
+	sysfs_remove_file(wifi_kobject,
+			  &feature_set_attribute.attr);
+}