10000 wifi: ath9k: Add PTP patch from wifi-ptp project by 6by9 · Pull Request #6882 · raspberrypi/linux · GitHub
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wifi: ath9k: Add PTP patch from wifi-ptp project #6882

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wifi: ath9k: Add PTP patch from wifi-ptp project #6882

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e8ed8e2
wifi: ath9k: Add PTP patch from wifi-ptp project
6by9 Jun 4, 2025
8b8afcd
wireless: ath9k: Fix up PTP patches based on updated understanding
6by9 Jun 12, 2025
0320eb2
wireless: ath9k: Fix build warning
6by9 Jun 12, 2025
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wireless: ath9k: Fix up PTP patches based on updated understanding 
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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@6by9
6by9 committed Jun 12, 2025
commit 8b8afcd251e0bb5f3b8c96a7b81c4f04527aea72
18 changes: 2 additions & 16 deletions drivers/net/wireless/ath/ath9k/ptp.c
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Expand Up @@ -5,29 +5,15 @@
#include <linux/ptp_clock_kernel.h>

static int ath9k_phc_adjfine(struct ptp_clock_info *ptp, long scaled_ppm) {
#if 0
struct ath_softc *sc = container_of(ptp, struct ath_softc, ptp_clock_info);
unsigned long flags;
int neg_adj = 0;
u32 mult, diff;
u64 adj;

if (scaled_ppm < 0) {
neg_adj = -1;
scaled_ppm = -scaled_ppm;
}
mult = sc->cc_mult;
adj = mult;
adj *= scaled_ppm;
diff = div_u64(adj, 1000000000ULL);

spin_lock_irqsave(&sc->systim_lock, flags);
timecounter_read(&sc->tc);
sc->cc.mult = neg_adj ? mult - diff : mult + diff;
sc->cc.mult = adjust_by_scaled_ppm(sc->cc_mult, scaled_ppm);
spin_unlock_irqrestore(&sc->systim_lock, flags);

ath_warn(ath9k_hw_common(sc->sc_ah), "phc adjust adj=%llu freq=%u\n", adj, diff);
#endif
ath_dbg(ath9k_hw_common(sc->sc_ah), CONFIG, "phc adjust scaled_ppm=%ld\n", scaled_ppm);

return 0;
}
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