From: Thomas Gleixner <tglx@linutronix.de> To: Grygorii Strashko <grygorii.strashko@ti.com> Cc: "David S. Miller" <davem@davemloft.net>, netdev@vger.kernel.org, Mugunthan V N <mugunthanvnm@ti.com>, Richard Cochran <richardcochran@gmail.com>, Sekhar Nori <nsekhar@ti.com>, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, Rob Herring <robh+dt@kernel.org>, devicetree@vger.kernel.org, Murali Karicheri <m-karicheri2@ti.com>, Wingman Kwok <w-kwok2@ti.com>, John Stultz <john.stultz@linaro.org> Subject: Re: [PATCH v2 11/13] clocksource: export the clocks_calc_mult_shift to use by timestamp code Date: Tue, 29 Nov 2016 10:08:53 +0100 (CET) [thread overview] Message-ID: <alpine.DEB.2.20.1611291008410.4358@nanos> (raw) In-Reply-To: <20161128230337.6731-12-grygorii.strashko@ti.com> On Mon, 28 Nov 2016, Grygorii Strashko wrote: > From: Murali Karicheri <m-karicheri2@ti.com> > > The CPSW CPTS driver is capable of doing timestamping on tx/rx packets and > requires to know mult and shift factors for timestamp conversion from raw > value to nanoseconds (ptp clock). Now these mult and shift factors are > calculated manually and provided through DT, which makes very hard to > support of a lot number of platforms, especially if CPTS refclk is not the > same for some kind of boards and depends on efuse settings (Keystone 2 > platforms). Hence, export clocks_calc_mult_shift() to allow drivers like > CPSW CPTS (and other ptp drivesr) to benefit from automaitc calculation of > mult and shift factors. > > Cc: John Stultz <john.stultz@linaro.org> > Cc: Thomas Gleixner <tglx@linutronix.de> > Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> > Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> > --- > kernel/time/clocksource.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c > index 7e4fad7..150242c 100644 > --- a/kernel/time/clocksource.c > +++ b/kernel/time/clocksource.c > @@ -89,6 +89,7 @@ clocks_calc_mult_shift(u32 *mult, u32 *shift, u32 from, u32 to, u32 maxsec) > *mult = tmp; > *shift = sft; > } > +EXPORT_SYMBOL_GPL(clocks_calc_mult_shift); > > /*[Clocksource internal variables]--------- > * curr_clocksource: > -- > 2.10.1 > >
WARNING: multiple messages have this Message-ID (diff)
From: Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org> To: Grygorii Strashko <grygorii.strashko-l0cyMroinI0@public.gmane.org> Cc: "David S. Miller" <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>, netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Mugunthan V N <mugunthanvnm-l0cyMroinI0@public.gmane.org>, Richard Cochran <richardcochran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Sekhar Nori <nsekhar-l0cyMroinI0@public.gmane.org>, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Murali Karicheri <m-karicheri2-l0cyMroinI0@public.gmane.org>, Wingman Kwok <w-kwok2-l0cyMroinI0@public.gmane.org>, John Stultz <john.stultz-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> Subject: Re: [PATCH v2 11/13] clocksource: export the clocks_calc_mult_shift to use by timestamp code Date: Tue, 29 Nov 2016 10:08:53 +0100 (CET) [thread overview] Message-ID: <alpine.DEB.2.20.1611291008410.4358@nanos> (raw) In-Reply-To: <20161128230337.6731-12-grygorii.strashko-l0cyMroinI0@public.gmane.org> On Mon, 28 Nov 2016, Grygorii Strashko wrote: > From: Murali Karicheri <m-karicheri2-l0cyMroinI0@public.gmane.org> > > The CPSW CPTS driver is capable of doing timestamping on tx/rx packets and > requires to know mult and shift factors for timestamp conversion from raw > value to nanoseconds (ptp clock). Now these mult and shift factors are > calculated manually and provided through DT, which makes very hard to > support of a lot number of platforms, especially if CPTS refclk is not the > same for some kind of boards and depends on efuse settings (Keystone 2 > platforms). Hence, export clocks_calc_mult_shift() to allow drivers like > CPSW CPTS (and other ptp drivesr) to benefit from automaitc calculation of > mult and shift factors. > > Cc: John Stultz <john.stultz-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> > Cc: Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org> > Signed-off-by: Murali Karicheri <m-karicheri2-l0cyMroinI0@public.gmane.org> > Signed-off-by: Grygorii Strashko <grygorii.strashko-l0cyMroinI0@public.gmane.org> Acked-by: Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org> > --- > kernel/time/clocksource.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c > index 7e4fad7..150242c 100644 > --- a/kernel/time/clocksource.c > +++ b/kernel/time/clocksource.c > @@ -89,6 +89,7 @@ clocks_calc_mult_shift(u32 *mult, u32 *shift, u32 from, u32 to, u32 maxsec) > *mult = tmp; > *shift = sft; > } > +EXPORT_SYMBOL_GPL(clocks_calc_mult_shift); > > /*[Clocksource internal variables]--------- > * curr_clocksource: > -- > 2.10.1 > > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2016-11-29 9:11 UTC|newest] Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-11-28 23:03 [PATCH v2 00/13] net: ethernet: ti: cpts: update and fixes Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-28 23:03 ` [PATCH v2 01/13] net: ethernet: ti: cpts: switch to readl/writel_relaxed() Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-29 9:38 ` Richard Cochran 2016-11-28 23:03 ` [PATCH v2 02/13] net: ethernet: ti: allow cpts to be built separately Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-29 9:37 ` Richard Cochran 2016-11-28 23:03 ` [PATCH v2 03/13] net: ethernet: ti: cpsw: minimize direct access to struct cpts Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-28 23:03 ` [PATCH v2 04/13] net: ethernet: ti: cpts: fix unbalanced clk api usage in cpts_register/unregister Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-29 9:48 ` Richard Cochran 2016-11-29 9:48 ` Richard Cochran 2016-11-28 23:03 ` [PATCH v2 05/13] net: ethernet: ti: cpts: fix registration order Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-29 9:48 ` Richard Cochran 2016-11-29 9:48 ` Richard Cochran 2016-11-28 23:03 ` [PATCH v2 06/13] net: ethernet: ti: cpts: disable cpts when unregistered Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-29 9:49 ` Richard Cochran 2016-11-29 9:49 ` Richard Cochran 2016-11-28 23:03 ` [PATCH v2 07/13] net: ethernet: ti: cpts: rework initialization/deinitialization Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-29 10:07 ` Richard Cochran 2016-11-29 10:07 ` Richard Cochran 2016-11-29 15:50 ` Grygorii Strashko 2016-11-29 15:50 ` Grygorii Strashko 2016-11-29 15:50 ` Grygorii Strashko 2016-11-30 18:30 ` Grygorii Strashko 2016-11-30 18:30 ` Grygorii Strashko 2016-11-30 18:30 ` Grygorii Strashko 2016-11-28 23:03 ` [PATCH v2 08/13] net: ethernet: ti: cpts: move dt props parsing to cpts driver Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-29 10:11 ` Richard Cochran 2016-11-29 15:54 ` Grygorii Strashko 2016-11-29 15:54 ` Grygorii Strashko 2016-11-28 23:03 ` [PATCH v2 09/13] net: ethernet: ti: cpts: clean up event list if event pool is empty Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-29 10:13 ` Richard Cochran 2016-11-28 23:03 ` [PATCH v2 10/13] net: ethernet: ti: cpts: drop excessive writes to CTRL and INT_EN regs Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-29 10:14 ` Richard Cochran 2016-11-29 10:14 ` Richard Cochran 2016-11-28 23:03 ` [PATCH v2 11/13] clocksource: export the clocks_calc_mult_shift to use by timestamp code Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-29 9:08 ` Thomas Gleixner [this message] 2016-11-29 9:08 ` Thomas Gleixner 2016-11-28 23:03 ` [PATCH v2 12/13] net: ethernet: ti: cpts: calc mult and shift from refclk freq Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-29 10:34 ` Richard Cochran 2016-11-29 10:34 ` Richard Cochran 2016-11-29 16:22 ` Grygorii Strashko 2016-11-29 16:22 ` Grygorii Strashko 2016-11-28 23:03 ` [PATCH v2 13/13] net: ethernet: ti: cpts: fix overflow check period Grygorii Strashko 2016-11-28 23:03 ` Grygorii Strashko 2016-11-30 9:12 ` Richard Cochran
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