netdev - [PATCH net-next v3 6/9] ptp: lan743x: remove .adjfreq implementation

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Date:   Fri, 28 Oct 2022 04:04:17 -0700
From:   Jacob Keller <jacob.e.keller@...el.com>
To:     Jakub Kicinski <kuba@...nel.org>,
        David Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Jacob Keller <jacob.e.keller@...el.com>,
        Richard Cochran <richardcochran@...il.com>,
        Bryan Whitehead <bryan.whitehead@...rochip.com>,
        UNGLinuxDriver@...rochip.com
Subject: [PATCH net-next v3 6/9] ptp: lan743x: remove .adjfreq implementation

The lan743x driver implements both .adjfreq and .adjfine, but the core PTP
subsystem prefers .adjfine if implemented. There is no reason to carry a
.adjfreq implementation, so we can remove it.

Signed-off-by: Jacob Keller <jacob.e.keller@...el.com>
Acked-by: Richard Cochran <richardcochran@...il.com>
Cc: Bryan Whitehead <bryan.whitehead@...rochip.com>
Cc: UNGLinuxDriver@...rochip.com
---
 drivers/net/ethernet/microchip/lan743x_ptp.c | 35 --------------------
 1 file changed, 35 deletions(-)

diff --git a/drivers/net/ethernet/microchip/lan743x_ptp.c b/drivers/net/ethernet/microchip/lan743x_ptp.c
index da3ea905adbb..28930f3c52c2 100644
--- a/drivers/net/ethernet/microchip/lan743x_ptp.c
+++ b/drivers/net/ethernet/microchip/lan743x_ptp.c
@@ -365,40 +365,6 @@ static int lan743x_ptpci_adjfine(struct ptp_clock_info *ptpci, long scaled_ppm)
 	return 0;
 }
 
-static int lan743x_ptpci_adjfreq(struct ptp_clock_info *ptpci, s32 delta_ppb)
-{
-	struct lan743x_ptp *ptp =
-		container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
-	struct lan743x_adapter *adapter =
-		container_of(ptp, struct lan743x_adapter, ptp);
-	u32 lan743x_rate_adj = 0;
-	bool positive = true;
-	u32 u32_delta = 0;
-	u64 u64_delta = 0;
-
-	if ((delta_ppb < (-LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB)) ||
-	    delta_ppb > LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB) {
-		return -EINVAL;
-	}
-	if (delta_ppb > 0) {
-		u32_delta = (u32)delta_ppb;
-		positive = true;
-	} else {
-		u32_delta = (u32)(-delta_ppb);
-		positive = false;
-	}
-	u64_delta = (((u64)u32_delta) << 35);
-	lan743x_rate_adj = div_u64(u64_delta, 1000000000);
-
-	if (positive)
-		lan743x_rate_adj |= PTP_CLOCK_RATE_ADJ_DIR_;
-
-	lan743x_csr_write(adapter, PTP_CLOCK_RATE_ADJ,
-			  lan743x_rate_adj);
-
-	return 0;
-}
-
 static int lan743x_ptpci_adjtime(struct ptp_clock_info *ptpci, s64 delta)
 {
 	struct lan743x_ptp *ptp =
@@ -1583,7 +1549,6 @@ int lan743x_ptp_open(struct lan743x_adapter *adapter)
 	ptp->ptp_clock_info.pps = LAN743X_PTP_N_PPS;
 	ptp->ptp_clock_info.pin_config = ptp->pin_config;
 	ptp->ptp_clock_info.adjfine = lan743x_ptpci_adjfine;
-	ptp->ptp_clock_info.adjfreq = lan743x_ptpci_adjfreq;
 	ptp->ptp_clock_info.adjtime = lan743x_ptpci_adjtime;
 	ptp->ptp_clock_info.gettime64 = lan743x_ptpci_gettime64;
 	ptp->ptp_clock_info.getcrosststamp = NULL;
-- 
2.38.0.83.gd420dda05763