From: Jacob Keller Date: Wed, 9 Nov 2022 23:09:38 +0000 (-0800) Subject: ptp_ixp46x: convert .adjfreq to .adjfine X-Git-Tag: v6.6.17~5932^2~232^2~7 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=319d77e9d059d4e7b0aba923578faed038d9038c;p=platform%2Fkernel%2Flinux-rpi.git ptp_ixp46x: convert .adjfreq to .adjfine The ptp_ixp46x implementation of .adjfreq is implemented in terms of a straight forward "base * ppb / 1 billion" calculation. Convert this to the newer .adjfine, using the recently added adjust_by_scaled_ppm helper function. Signed-off-by: Jacob Keller Cc: Paolo Abeni Cc: Richard Cochran Cc: Linus Walleij Reviewed-by: Linus Walleij Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/xscale/ptp_ixp46x.c b/drivers/net/ethernet/xscale/ptp_ixp46x.c index 9abbdb7..94203eb 100644 --- a/drivers/net/ethernet/xscale/ptp_ixp46x.c +++ b/drivers/net/ethernet/xscale/ptp_ixp46x.c @@ -120,24 +120,13 @@ static irqreturn_t isr(int irq, void *priv) * PTP clock operations */ -static int ptp_ixp_adjfreq(struct ptp_clock_info *ptp, s32 ppb) +static int ptp_ixp_adjfine(struct ptp_clock_info *ptp, long scaled_ppm) { - u64 adj; - u32 diff, addend; - int neg_adj = 0; + u32 addend; struct ixp_clock *ixp_clock = container_of(ptp, struct ixp_clock, caps); struct ixp46x_ts_regs *regs = ixp_clock->regs; - if (ppb < 0) { - neg_adj = 1; - ppb = -ppb; - } - addend = DEFAULT_ADDEND; - adj = addend; - adj *= ppb; - diff = div_u64(adj, 1000000000ULL); - - addend = neg_adj ? addend - diff : addend + diff; + addend = adjust_by_scaled_ppm(DEFAULT_ADDEND, scaled_ppm); __raw_writel(addend, ®s->addend); @@ -230,7 +219,7 @@ static const struct ptp_clock_info ptp_ixp_caps = { .n_ext_ts = N_EXT_TS, .n_pins = 0, .pps = 0, - .adjfreq = ptp_ixp_adjfreq, + .adjfine = ptp_ixp_adjfine, .adjtime = ptp_ixp_adjtime, .gettime64 = ptp_ixp_gettime, .settime64 = ptp_ixp_settime,