qcacmn: Add support to configure spectral scan bandwidth

Add support to configure spectral scan bandwidth as provided by the user.
Validate the user configured value before applying it. As the spectral scan
bandwidth is an optional parameter, when the user doesn't configure it, use
configure the spectral scan bandwidth to the maximum value supported by the
target for the current operating bandwidth.
Also, populate the spectral scan bandwidths supported for different
operating bandwidths on different targets.

CRs-Fixed: 3042424
Change-Id: I266aa5489b0ce5c149968067a06e1cc65bb4e3b7

target_if/spectral/target_if_spectral.h

@@ -1083,6 +1083,37 @@ struct sscan_detector_list {
 	uint8_t num_detectors;
 };
 
+/**
+ * struct spectral_supported_bws - Supported sscan bandwidths
+ * @bandwidths: bitmap of supported sscan bandwidths. Make sure to maintain this
+ * bitmap in the increasing order of bandwidths.
+ */
+struct spectral_supported_bws {
+	union {
+		struct {
+			uint32_t supports_sscan_bw_5:1,
+				 supports_sscan_bw_10:1,
+				 supports_sscan_bw_20:1,
+				 supports_sscan_bw_40:1,
+				 supports_sscan_bw_80:1,
+				 supports_sscan_bw_160:1,
+				 supports_sscan_bw_80_80:1,
+				 supports_sscan_bw_320:1,
+				 reserved:24;
+		};
+		uint32_t bandwidths;
+	};
+};
+
+/**
+ * get_supported_sscan_bw_pos() - Get the position of a given sscan_bw inside
+ * the supported sscan bandwidths bitmap
+ * @sscan_bw: Spectral scan bandwidth
+ *
+ * Return: bit position for a valid sscan bandwidth, else -1
+ */
+int get_supported_sscan_bw_pos(enum phy_ch_width sscan_bw);
+
 /**
  * struct target_if_spectral - main spectral structure
  * @pdev: Pointer to pdev
@@ -1146,6 +1177,7 @@ struct sscan_detector_list {
  * @tsf64: Latest TSF Value
  * @param_info: Offload architecture Spectral parameter cache information
  * @ch_width: Indicates Channel Width 20/40/80/160 MHz for each Spectral mode
+ * @sscan_width_configured: Whether user has configured sscan bandwidth
  * @diag_stats: Diagnostic statistics
  * @is_160_format:  Indicates whether information provided by HW is in altered
  * format for 802.11ac 160/80+80 MHz support (QCA9984 onwards)
@@ -1186,6 +1218,8 @@ struct sscan_detector_list {
  * @session_det_map_lock: Lock to synchronize accesses to session detector map
  * @report_info: Per session info to be filled at report level in SAMP message
  * @session_report_info_lock: Lock to synchronize access to session report info
+ * @supported_bws: Supported sscan bandwidths for all sscan modes and
+ * operating widths
  */
 struct target_if_spectral {
 	struct wlan_objmgr_pdev *pdev_obj;
@@ -1274,6 +1308,7 @@ struct target_if_spectral {
 					param_info[SPECTRAL_SCAN_MODE_MAX];
 #endif
 	enum phy_ch_width ch_width[SPECTRAL_SCAN_MODE_MAX];
+	bool sscan_width_configured[SPECTRAL_SCAN_MODE_MAX];
 	struct spectral_diag_stats              diag_stats;
 	bool                                    is_160_format;
 	bool                                    is_lb_edge_extrabins_format;
@@ -1314,6 +1349,8 @@ struct target_if_spectral {
 	qdf_spinlock_t session_det_map_lock;
 	struct per_session_report_info report_info[SPECTRAL_SCAN_MODE_MAX];
 	qdf_spinlock_t session_report_info_lock;
+	struct spectral_supported_bws
+		supported_bws[SPECTRAL_SCAN_MODE_MAX][CH_WIDTH_MAX];
 };
 
 /**