qcacld-3.0: add rtpm stats sysfs functionality

Current code allows for viewing Runtime PM stats via debugfs only.
Fix this by adding sysfs viewing functionality.

Change-Id: I2b439f0bb608292dc1390a5529f9dc287b7262bc
CRs-Fixed: 3414306

Kbuild

@@ -473,6 +473,11 @@ endif
 ifeq ($(CONFIG_FEATURE_DIRECT_LINK), y)
 HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_direct_link_ut_cmd.o
 endif
+
+ifeq ($(CONFIG_BUS_AUTO_SUSPEND), y)
+HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_runtime_pm.o
+endif
+
 endif # CONFIG_WLAN_SYSFS
 
 ifeq ($(CONFIG_QCACLD_FEATURE_FW_STATE), y)

core/hdd/src/wlan_hdd_sysfs.c

@@ -89,6 +89,7 @@
 #include <wlan_hdd_sysfs_dp_traffic_end_indication.h>
 #include <wlan_hdd_sysfs_eht_rate.h>
 #include <wlan_hdd_sysfs_direct_link_ut_cmd.h>
+#include <wlan_hdd_sysfs_runtime_pm.h>
 
 #define MAX_PSOC_ID_SIZE 10
 
@@ -913,12 +914,14 @@ void hdd_create_sysfs_files(struct hdd_context *hdd_ctx)
 		hdd_sysfs_dp_txrx_stats_sysfs_create(driver_kobject);
 		hdd_sysfs_get_valid_freq_for_power_create(driver_kobject);
 		hdd_sysfs_dp_pkt_add_ts_create(driver_kobject);
+		hdd_sysfs_runtime_pm_create(driver_kobject);
 	}
 }
 
 void hdd_destroy_sysfs_files(void)
 {
 	if  (QDF_GLOBAL_MISSION_MODE == hdd_get_conparam()) {
+		hdd_sysfs_runtime_pm_create(driver_kobject);
 		hdd_sysfs_dp_pkt_add_ts_destroy(driver_kobject);
 		hdd_sysfs_get_valid_freq_for_power_destroy(driver_kobject);
 		hdd_sysfs_dp_txrx_stats_sysfs_destroy(driver_kobject);

core/hdd/src/wlan_hdd_sysfs_runtime_pm.c

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2023 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.
+ */
+
+#include <wlan_hdd_includes.h>
+#include "osif_psoc_sync.h"
+#include <wlan_hdd_sysfs.h>
+#include <wlan_hdd_sysfs_runtime_pm.h>
+#include "hif.h"
+#include "hif_runtime_pm.h"
+
+static ssize_t hdd_sysfs_runtime_pm_show(struct kobject *kobj,
+					 struct kobj_attribute *attr,
+					 char *buf)
+{
+	return hif_rtpm_log_debug_stats(buf, HIF_RTPM_FILL_TYPE_SYSFS);
+}
+
+static struct kobj_attribute runtime_pm_attribute =
+	__ATTR(runtime_pm, 0440, hdd_sysfs_runtime_pm_show,
+	       NULL);
+
+int hdd_sysfs_runtime_pm_create(struct kobject *driver_kobject)
+{
+	int error;
+
+	if (!driver_kobject) {
+		hdd_err("could not get driver kobject!");
+		return -EINVAL;
+	}
+
+	error = sysfs_create_file(driver_kobject,
+				  &runtime_pm_attribute.attr);
+	if (error)
+		hdd_err("could not create scan_disable sysfs file");
+
+	return error;
+}
+
+void
+hdd_sysfs_runtime_pm_destroy(struct kobject *driver_kobject)
+{
+	if (!driver_kobject) {
+		hdd_err("could not get driver kobject!");
+		return;
+	}
+	sysfs_remove_file(driver_kobject, &runtime_pm_attribute.attr);
+}

core/hdd/src/wlan_hdd_sysfs_runtime_pm.h

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2023 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.
+ */
+
+#ifndef _WLAN_HDD_SYSFS_RUNTIME_PM_H
+#define _WLAN_HDD_SYSFS_RUNTIME_PM_H
+
+#if defined(WLAN_SYSFS) && defined(FEATURE_RUNTIME_PM)
+
+int hdd_sysfs_runtime_pm_create(struct kobject *driver_kobject);
+
+void
+hdd_sysfs_runtime_pm_destroy(struct kobject *driver_kobject);
+
+#else
+
+static inline int
+hdd_sysfs_runtime_pm_create(struct kobject *driver_kobject)
+{
+	return 0;
+}
+
+static inline void
+hdd_sysfs_runtime_pm_destroy(struct kobject *driver_kobject)
+{
+}
+#endif
+#endif