iwlwifi: beacon format related helper function

Move the ucode beacon formation related helper function from 3945 to
iwlcore, so both _3945 and _agn devices can utilize those functions.

When driver pass the beacon related timing information to uCode in both
spectrum measurement and channel switch commands, the beacon timing
parameter require in uCode beacon format; those helper functions will do
the conversation from uSec to the correct uCode format

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-helpers.h b/drivers/net/wireless/iwlwifi/iwl-helpers.h
index 6984639..621abe3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-helpers.h
+++ b/drivers/net/wireless/iwlwifi/iwl-helpers.h
@@ -175,4 +175,26 @@ static inline void iwl_enable_interrupts(struct iwl_priv *priv)
 	iwl_write32(priv, CSR_INT_MASK, priv->inta_mask);
 }
 
+/**
+ * iwl_beacon_time_mask_low - mask of lower 32 bit of beacon time
+ * @priv -- pointer to iwl_priv data structure
+ * @tsf_bits -- number of bits need to shift for masking)
+ */
+static inline u32 iwl_beacon_time_mask_low(struct iwl_priv *priv,
+					   u16 tsf_bits)
+{
+	return (1 << tsf_bits) - 1;
+}
+
+/**
+ * iwl_beacon_time_mask_high - mask of higher 32 bit of beacon time
+ * @priv -- pointer to iwl_priv data structure
+ * @tsf_bits -- number of bits need to shift for masking)
+ */
+static inline u32 iwl_beacon_time_mask_high(struct iwl_priv *priv,
+					    u16 tsf_bits)
+{
+	return ((1 << (32 - tsf_bits)) - 1) << tsf_bits;
+}
+
 #endif				/* __iwl_helpers_h__ */