qcacld-3.0: Add a sysfs replacement for get_temp

As part of WEXT replacement, replace get_temp with a sysfs file.

file path: /sys/class/net/wlanxx/get_temp
	where wlanxx is adapter name

example: cat /sys/class/net/wlanxx/get_temp

Change-Id: I6e530562347c936fb980f4eed4c3a55cb9804bdd
CRs-Fixed: 2684669

Kbuild

@@ -318,6 +318,9 @@ endif
 ifeq ($(CONFIG_WLAN_GET_TDLS_PEERS), y)
 HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_get_tdls_peers.o
 endif
+ifeq ($(CONFIG_WLAN_GET_TEMP), y)
+HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_get_temp.o
+endif
 endif
 
 ifeq ($(CONFIG_QCACLD_FEATURE_FW_STATE), y)
@@ -2553,6 +2556,7 @@ cppflags-$(CONFIG_WLAN_TXRX_FW_STATS) += -DCONFIG_WLAN_TXRX_FW_STATS
 cppflags-$(CONFIG_WLAN_TXRX_STATS) += -DCONFIG_WLAN_TXRX_STATS
 cppflags-$(CONFIG_WLAN_SET_DP_TRACE) += -DCONFIG_WLAN_SET_DP_TRACE
 cppflags-$(CONFIG_WLAN_GET_RANGE_EXT) += -DCONFIG_WLAN_GET_RANGE_EXT
+cppflags-$(CONFIG_WLAN_GET_TEMP) += -DCONFIG_WLAN_GET_TEMP
 cppflags-$(CONFIG_FEATURE_UNIT_TEST_SUSPEND) += -DWLAN_SUSPEND_RESUME_TEST
 cppflags-$(CONFIG_FEATURE_WLM_STATS) += -DFEATURE_WLM_STATS
 

configs/default_defconfig

@@ -194,6 +194,7 @@ ifeq ($(CONFIG_WLAN_SYSFS), y)
 ifeq ($(CONFIG_QCOM_TDLS), y)
 	CONFIG_WLAN_GET_TDLS_PEERS := y
 endif
+	CONFIG_WLAN_GET_TEMP := y
 endif
 
 CONFIG_WLAN_POWER_DEBUG := y

core/hdd/src/wlan_hdd_sysfs.c

@@ -58,6 +58,7 @@
 #include <wlan_hdd_sysfs_set_dp_trace.h>
 #include <wlan_hdd_sysfs_get_range_ext.h>
 #include <wlan_hdd_sysfs_get_tdls_peers.h>
+#include <wlan_hdd_sysfs_get_temp.h>
 
 #define MAX_PSOC_ID_SIZE 10
 
@@ -642,11 +643,13 @@ hdd_sysfs_create_sta_adapter_root_obj(struct hdd_adapter *adapter)
 	hdd_sysfs_txrx_stats_create(adapter);
 	hdd_sysfs_get_range_ext_create(adapter);
 	hdd_sysfs_get_tdls_peers_interface_create(adapter);
+	hdd_sysfs_get_temp_create(adapter);
 }
 
 static void
 hdd_sysfs_destroy_sta_adapter_root_obj(struct hdd_adapter *adapter)
 {
+	hdd_sysfs_get_temp_destroy(adapter);
 	hdd_sysfs_get_tdls_peers_interface_destroy(adapter);
 	hdd_sysfs_get_range_ext_destroy(adapter);
 	hdd_sysfs_txrx_stats_destroy(adapter);
@@ -677,11 +680,13 @@ hdd_sysfs_create_sap_adapter_root_obj(struct hdd_adapter *adapter)
 	hdd_sysfs_set_radar_create(adapter);
 	hdd_sysfs_txrx_fw_stats_create(adapter);
 	hdd_sysfs_txrx_stats_create(adapter);
+	hdd_sysfs_get_temp_create(adapter);
 }
 
 static void
 hdd_sysfs_destroy_sap_adapter_root_obj(struct hdd_adapter *adapter)
 {
+	hdd_sysfs_get_temp_destroy(adapter);
 	hdd_sysfs_txrx_stats_destroy(adapter);
 	hdd_sysfs_txrx_fw_stats_destroy(adapter);
 	hdd_sysfs_set_radar_destroy(adapter);

core/hdd/src/wlan_hdd_sysfs_get_temp.c

@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2011-2020 The Linux Foundation. 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_get_temp.c
+ *
+ * implementation for creating sysfs file get_temp
+ */
+
+#include <wlan_hdd_includes.h>
+#include <wlan_hdd_sysfs.h>
+#include "osif_vdev_sync.h"
+#include <wlan_hdd_sysfs_get_temp.h>
+#include <wlan_hdd_stats.h>
+
+static ssize_t
+__hdd_sysfs_get_temp_show(struct net_device *net_dev, char *buf)
+{
+	struct hdd_adapter *adapter = netdev_priv(net_dev);
+	struct hdd_context *hdd_ctx;
+	int value;
+	int ret;
+
+	if (hdd_validate_adapter(adapter)) {
+		hdd_err_rl("adapter validate fail");
+		return -EINVAL;
+	}
+
+	hdd_ctx = WLAN_HDD_GET_CTX(adapter);
+	ret = wlan_hdd_validate_context(hdd_ctx);
+	if (ret)
+		return ret;
+
+	if (!wlan_hdd_validate_modules_state(hdd_ctx))
+		return -EINVAL;
+
+	hdd_debug("SYSFS_GET_TEMPERATURE");
+	ret = wlan_hdd_get_temperature(adapter, &value);
+
+	if (ret) {
+		hdd_err_rl("GET_TEMP failed: %d", ret);
+		return ret;
+	}
+
+	return scnprintf(buf, PAGE_SIZE, "%d\n", value);
+}
+
+static ssize_t
+hdd_sysfs_get_temp_show(struct device *dev,
+			struct device_attribute *attr,
+			char *buf)
+{
+	struct net_device *net_dev = container_of(dev, struct net_device, dev);
+	struct osif_vdev_sync *vdev_sync;
+	ssize_t err_size;
+
+	err_size = osif_vdev_sync_op_start(net_dev, &vdev_sync);
+	if (err_size)
+		return err_size;
+
+	err_size = __hdd_sysfs_get_temp_show(net_dev, buf);
+
+	osif_vdev_sync_op_stop(vdev_sync);
+
+	return err_size;
+}
+
+static DEVICE_ATTR(get_temp, 0440,
+		   hdd_sysfs_get_temp_show, NULL);
+
+int hdd_sysfs_get_temp_create(struct hdd_adapter *adapter)
+{
+	int error;
+
+	error = device_create_file(&adapter->dev->dev,
+				   &dev_attr_get_temp);
+	if (error)
+		hdd_err("could not create get_temp sysfs file");
+
+	return error;
+}
+
+void hdd_sysfs_get_temp_destroy(struct hdd_adapter *adapter)
+{
+	device_remove_file(&adapter->dev->dev, &dev_attr_get_temp);
+}

core/hdd/src/wlan_hdd_sysfs_get_temp.h

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2011-2020 The Linux Foundation. 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_get_temp.h
+ *
+ * implementation for creating sysfs file get_temp
+ */
+
+#ifndef _WLAN_HDD_SYSFS_GET_TEMP_H
+#define _WLAN_HDD_SYSFS_GET_TEMP_H
+
+#if defined(WLAN_SYSFS) && defined(CONFIG_WLAN_GET_TEMP)
+/**
+ * hdd_sysfs_get_temp_create() - API to create get_temp
+ * @adapter: pointer to adapter
+ *
+ * this file is created per adapter.
+ * file path: /sys/class/net/wlanxx/get_temp
+ *	where wlanxx is adapter name
+ *
+ * usage:
+ *      cat /sys/class/net/wlanxx/get_temp
+ *
+ * Return: 0 on success and errno on failure
+ */
+int hdd_sysfs_get_temp_create(struct hdd_adapter *adapter);
+
+/**
+ * hdd_sysfs_get_temp_destroy() -
+ *   API to destroy get_temp
+ * @adapter: pointer to adapter
+ *
+ * Return: none
+ */
+void hdd_sysfs_get_temp_destroy(struct hdd_adapter *adapter);
+#else
+static inline int
+hdd_sysfs_get_temp_create(struct hdd_adapter *adapter)
+{
+	return 0;
+}
+
+static inline void
+hdd_sysfs_get_temp_destroy(struct hdd_adapter *adapter)
+{
+}
+#endif
+#endif /* #ifndef _WLAN_HDD_SYSFS_GET_TEMP_H */