netdev - [PATCH iwl-net] ice: fix PHY timestamp extraction for ETH56G

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Message-Id: <20241107113257.466286-1-przemyslaw.korba@intel.com>
Date: Thu,  7 Nov 2024 12:32:57 +0100
From: Przemyslaw Korba <przemyslaw.korba@...el.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
	anthony.l.nguyen@...el.com,
	przemyslaw.kitszel@...el.com,
	Przemyslaw Korba <przemyslaw.korba@...el.com>
Subject: [PATCH iwl-net] ice: fix PHY timestamp extraction for ETH56G

Fix incorrect PHY timestamp extraction for ETH56G.
It's better to use FIELD_PREP() than manual shift.

Fixes: 7cab44f1c35f ("ice: Introduce ETH56G PHY model for E825C products")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Signed-off-by: Przemyslaw Korba <przemyslaw.korba@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_ptp_hw.c | 3 ++-
 drivers/net/ethernet/intel/ice/ice_ptp_hw.h | 5 ++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
index ec8db830ac73..3816e45b6ab4 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
@@ -1495,7 +1495,8 @@ static int ice_read_ptp_tstamp_eth56g(struct ice_hw *hw, u8 port, u8 idx,
 	 * lower 8 bits in the low register, and the upper 32 bits in the high
 	 * register.
 	 */
-	*tstamp = ((u64)hi) << TS_PHY_HIGH_S | ((u64)lo & TS_PHY_LOW_M);
+	*tstamp = FIELD_PREP(TS_PHY_HIGH_M, hi) |
+		  FIELD_PREP(TS_PHY_LOW_M, lo);
 
 	return 0;
 }
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_hw.h b/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
index 6cedc1a906af..4c8b84571344 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
+++ b/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
@@ -663,9 +663,8 @@ static inline u64 ice_get_base_incval(struct ice_hw *hw)
 #define TS_HIGH_M			0xFF
 #define TS_HIGH_S			32
 
-#define TS_PHY_LOW_M			0xFF
-#define TS_PHY_HIGH_M			0xFFFFFFFF
-#define TS_PHY_HIGH_S			8
+#define TS_PHY_LOW_M			GENMASK(7, 0)
+#define TS_PHY_HIGH_M			GENMASK_ULL(39, 8)
 
 #define BYTES_PER_IDX_ADDR_L_U		8
 #define BYTES_PER_IDX_ADDR_L		4

base-commit: 333b8b2188c495a2a1431b5e0d51826383271aad
-- 
2.31.1

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