From f8f30ced97843e47923b377e259abb3bb7285be9 Mon Sep 17 00:00:00 2001
From: Hariharan Basuthkar <hbasuthk@codeaurora.org>
Date: Mon, 23 Dec 2019 17:35:55 +0530
Subject: [PATCH] qcacmn: Get opclass from freq and width given a country code

Add the API wlan_reg_get_opclass_from_freq_width, to give country_iso,
channel frequency, channel width and behaviour limit as input, and get
the operating class as output.

Change-Id: I96c39119ab855d10965b2603e8b15c21699daa68
CRs-Fixed: 2583789
---
 umac/regulatory/core/src/reg_opclass.c        | 28 +++++++++++++++++++
 umac/regulatory/core/src/reg_opclass.h        | 24 ++++++++++++++++
 .../dispatcher/inc/wlan_reg_services_api.h    | 15 ++++++++++
 .../dispatcher/src/wlan_reg_services_api.c    |  9 ++++++
 4 files changed, 76 insertions(+)

diff --git a/umac/regulatory/core/src/reg_opclass.c b/umac/regulatory/core/src/reg_opclass.c
index 4081ee79d523..d856f1397941 100644
--- a/umac/regulatory/core/src/reg_opclass.c
+++ b/umac/regulatory/core/src/reg_opclass.c
@@ -342,6 +342,34 @@ uint16_t reg_dmn_get_opclass_from_channel(uint8_t *country, uint8_t channel,
 	return 0;
 }
 
+uint8_t reg_dmn_get_opclass_from_freq_width(uint8_t *country,
+					    qdf_freq_t freq,
+					    uint8_t ch_width,
+					    uint16_t behav_limit)
+{
+	const struct reg_dmn_op_class_map_t *op_class_tbl = NULL;
+	uint16_t i = 0;
+
+	op_class_tbl = reg_get_class_from_country(country);
+
+	while (op_class_tbl && op_class_tbl->op_class) {
+		if (op_class_tbl->chan_spacing == ch_width) {
+			for (i = 0; (i < REG_MAX_CHANNELS_PER_OPERATING_CLASS &&
+				     op_class_tbl->channels[i]); i++) {
+				if ((op_class_tbl->start_freq +
+				     (FREQ_TO_CHAN_SCALE *
+				      op_class_tbl->channels[i]) == freq) &&
+				    (behav_limit & op_class_tbl->behav_limit)) {
+					return op_class_tbl->op_class;
+				}
+			}
+		}
+		op_class_tbl++;
+	}
+
+	return 0;
+}
+
 void reg_dmn_print_channels_in_opclass(uint8_t *country, uint8_t op_class)
 {
 	const struct reg_dmn_op_class_map_t *class = NULL;
diff --git a/umac/regulatory/core/src/reg_opclass.h b/umac/regulatory/core/src/reg_opclass.h
index 28ea0f63869d..834f3d789ad5 100644
--- a/umac/regulatory/core/src/reg_opclass.h
+++ b/umac/regulatory/core/src/reg_opclass.h
@@ -47,6 +47,21 @@ uint16_t reg_dmn_get_chanwidth_from_opclass(uint8_t *country, uint8_t channel,
  */
 uint16_t reg_dmn_get_opclass_from_channel(uint8_t *country, uint8_t channel,
 					  uint8_t offset);
+
+/**
+ * reg_dmn_get_opclass_from_freq_width() - Get operating class from frequency
+ * @country: Country code.
+ * @freq: Channel center frequency.
+ * @ch_width: Channel width.
+ * @behav_limit: Behaviour limit.
+ *
+ * Return: Error code.
+ */
+uint8_t reg_dmn_get_opclass_from_freq_width(uint8_t *country,
+					    qdf_freq_t freq,
+					    uint8_t ch_width,
+					    uint16_t behav_limit);
+
 /**
  * reg_dmn_get_opclass_from_channe() - Print channels in op class.
  * @country: Country code.
@@ -166,6 +181,15 @@ static inline uint16_t reg_dmn_get_opclass_from_channel(
 	return 0;
 }
 
+static inline
+uint8_t reg_dmn_get_opclass_from_freq_width(uint8_t *country,
+					    qdf_freq_t freq,
+					    uint8_t ch_width,
+					    uint16_t behav_limit)
+{
+	return 0;
+}
+
 static inline void reg_dmn_print_channels_in_opclass(uint8_t *country,
 						     uint8_t op_class)
 {
diff --git a/umac/regulatory/dispatcher/inc/wlan_reg_services_api.h b/umac/regulatory/dispatcher/inc/wlan_reg_services_api.h
index ee262d003b7c..dc892342f6b7 100644
--- a/umac/regulatory/dispatcher/inc/wlan_reg_services_api.h
+++ b/umac/regulatory/dispatcher/inc/wlan_reg_services_api.h
@@ -546,6 +546,21 @@ QDF_STATUS wlan_reg_get_domain_from_country_code(v_REGDOMAIN_t *reg_domain_ptr,
 uint16_t wlan_reg_dmn_get_opclass_from_channel(uint8_t *country,
 					       uint8_t channel,
 					       uint8_t offset);
+
+/**
+ * wlan_reg_get_opclass_from_freq_width() - Get operating class from frequency
+ * @country: Country code.
+ * @freq: Channel center frequency.
+ * @ch_width: Channel width.
+ * @behav_limit: Behaviour limit.
+ *
+ * Return: Error code.
+ */
+uint8_t wlan_reg_get_opclass_from_freq_width(uint8_t *country,
+					     qdf_freq_t freq,
+					     uint8_t ch_width,
+					     uint16_t behav_limit);
+
 /**
  * wlan_reg_dmn_print_channels_in_opclass() - Print channels in op-class
  * @country: country alpha2
diff --git a/umac/regulatory/dispatcher/src/wlan_reg_services_api.c b/umac/regulatory/dispatcher/src/wlan_reg_services_api.c
index 288b43b60c93..22f2482c6ac6 100644
--- a/umac/regulatory/dispatcher/src/wlan_reg_services_api.c
+++ b/umac/regulatory/dispatcher/src/wlan_reg_services_api.c
@@ -267,6 +267,15 @@ uint16_t wlan_reg_dmn_get_opclass_from_channel(uint8_t *country,
 						offset);
 }
 
+uint8_t wlan_reg_get_opclass_from_freq_width(uint8_t *country,
+					     qdf_freq_t freq,
+					     uint8_t ch_width,
+					     uint16_t behav_limit)
+{
+	return reg_dmn_get_opclass_from_freq_width(country, freq, ch_width,
+						   behav_limit);
+}
+
 void wlan_reg_dmn_print_channels_in_opclass(uint8_t *country,
 					    uint8_t opclass)
 {