ath5k: Read and write the TSF via debugfs

This patch updates the ath5k specific entry in the debugfs to read and reset the TSF value, to allowing write it, too. This makes debugging the IBSS handling of wifi drivers _much_ easier.

Signed-off-by: Alina Friedrichsen <x-alina@gmx.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath5k/pcu.c b/drivers/net/wireless/ath5k/pcu.c
index 86f53a55b0f7..f8a4a6960270 100644
--- a/drivers/net/wireless/ath5k/pcu.c
+++ b/drivers/net/wireless/ath5k/pcu.c
@@ -646,6 +646,23 @@ u64 ath5k_hw_get_tsf64(struct ath5k_hw *ah)
 }
 
 /**
+ * ath5k_hw_set_tsf64 - Set a new 64bit TSF
+ *
+ * @ah: The &struct ath5k_hw
+ * @tsf64: The new 64bit TSF
+ *
+ * Sets the new TSF
+ */
+void ath5k_hw_set_tsf64(struct ath5k_hw *ah, u64 tsf64)
+{
+        ATH5K_TRACE(ah->ah_sc);
+
+        ath5k_hw_reg_write(ah, 0x00000000, AR5K_TSF_L32);
+        ath5k_hw_reg_write(ah, (tsf64 >> 32) & 0xffffffff, AR5K_TSF_U32);
+        ath5k_hw_reg_write(ah, tsf64 & 0xffffffff, AR5K_TSF_L32);
+}
+
+/**
  * ath5k_hw_reset_tsf - Force a TSF reset
  *
  * @ah: The &struct ath5k_hw