qcacmn: Add cfg80211 scan start and stop command

Add cfg80211 scan start and scan stop commands.

Change-Id: I20b6c7743496ae82cc3a93befb5b68812047ec1a
CRs-Fixed: 1095299

umac/cmn_services/utils/inc/wlan_utility.h

@@ -23,4 +23,22 @@
 #ifndef _WLAN_UTILITY_H_
 #define _WLAN_UTILITY_H_
 
+#include <qdf_types.h>
+
+/**
+ * wlan_chan_to_freq() - converts channel to frequency
+ * @chan: channel number
+ *
+ * @return frequency of the channel
+ */
+uint32_t wlan_chan_to_freq(uint8_t chan);
+
+/*
+ * wlan_is_dsrc_channel() - is the channel DSRC
+ * @center_freq: center freq of the channel
+ *
+ * Return: true if DSRC channel or false otherwise
+ */
+bool wlan_is_dsrc_channel(uint16_t center_freq);
+
 #endif /* _WLAN_UTILITY_H_ */

umac/cmn_services/utils/src/wlan_utility.c

@@ -21,4 +21,30 @@
  */
 
 #include "wlan_utility.h"
+#include <wlan_cmn.h>
 
+uint32_t wlan_chan_to_freq(uint8_t chan)
+{
+	/* ch 0 - ch 13 */
+	if (chan < WLAN_24_GHZ_CHANNEL_14)
+		return WLAN_24_GHZ_BASE_FREQ + chan * WLAN_CHAN_SPACING_5MHZ;
+	else if (chan == WLAN_24_GHZ_CHANNEL_14)
+		return WLAN_CHAN_14_FREQ;
+	else if (chan < WLAN_24_GHZ_CHANNEL_27)
+		/* ch 15 - ch 26 */
+		return WLAN_CHAN_15_FREQ +
+		  (chan - WLAN_24_GHZ_CHANNEL_15) * WLAN_CHAN_SPACING_20MHZ;
+	else if (chan == WLAN_5_GHZ_CHANNEL_170)
+		return WLAN_CHAN_170_FREQ;
+	else
+		return WLAN_5_GHZ_BASE_FREQ + chan * WLAN_CHAN_SPACING_5MHZ;
+}
+
+bool wlan_is_dsrc_channel(uint16_t center_freq)
+{
+	if (center_freq >= 5852 &&
+	    center_freq <= 5920)
+		return true;
+
+	return false;
+}