From: Richard Cochran <richardcochran@gmail.com>
To: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: "David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, Mugunthan V N <mugunthanvnm@ti.com>,
Sekhar Nori <nsekhar@ti.com>,
linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org,
WingMan Kwok <w-kwok2@ti.com>
Subject: Re: [PATCH 8/9] net: ethernet: ti: cpts: fix overflow check period
Date: Wed, 14 Sep 2016 16:25:03 +0200 [thread overview]
Message-ID: <20160914142503.GF28592@localhost.localdomain> (raw)
In-Reply-To: <20160914130231.3035-9-grygorii.strashko@ti.com>
On Wed, Sep 14, 2016 at 04:02:30PM +0300, Grygorii Strashko wrote:
> @@ -427,9 +427,6 @@ static void cpts_calc_mult_shift(struct cpts *cpts)
> u64 ns;
> u64 frac;
>
> - if (cpts->cc_mult || cpts->cc.shift)
> - return;
> -
> freq = clk_get_rate(cpts->refclk);
>
> /* Calc the maximum number of seconds which we can run before
This hunk has nothing to do with $subject.
> @@ -442,11 +439,20 @@ static void cpts_calc_mult_shift(struct cpts *cpts)
> else if (maxsec > 600 && cpts->cc.mask > UINT_MAX)
> maxsec = 600;
>
> + /* Calc overflow check period (maxsec / 2) */
> + cpts->ov_check_period = (HZ * maxsec) / 2;
> + dev_info(cpts->dev, "cpts: overflow check period %lu\n",
> + cpts->ov_check_period);
> +
> + if (cpts->cc_mult || cpts->cc.shift)
> + return;
> +
> clocks_calc_mult_shift(&mult, &shift, freq, NSEC_PER_SEC, maxsec);
>
> cpts->cc_mult = mult;
> cpts->cc.mult = mult;
> cpts->cc.shift = shift;
> +
Nor does this.
Thanks,
Richard
> /* Check calculations and inform if not precise */
> frac = 0;
> ns = cyclecounter_cyc2ns(&cpts->cc, freq, cpts->cc.mask, &frac);
> diff --git a/drivers/net/ethernet/ti/cpts.h b/drivers/net/ethernet/ti/cpts.h
> index 47026ec..e0e4a62b 100644
> --- a/drivers/net/ethernet/ti/cpts.h
> +++ b/drivers/net/ethernet/ti/cpts.h
> @@ -97,9 +97,6 @@ enum {
> CPTS_EV_TX, /* Ethernet Transmit Event */
> };
>
> -/* This covers any input clock up to about 500 MHz. */
> -#define CPTS_OVERFLOW_PERIOD (HZ * 8)
> -
> #define CPTS_FIFO_DEPTH 16
> #define CPTS_MAX_EVENTS 32
>
> @@ -127,6 +124,7 @@ struct cpts {
> struct list_head events;
> struct list_head pool;
> struct cpts_event pool_data[CPTS_MAX_EVENTS];
> + unsigned long ov_check_period;
> };
>
> int cpts_rx_timestamp(struct cpts *cpts, struct sk_buff *skb);
> --
> 2.9.3
>
next prev parent reply other threads:[~2016-09-14 14:25 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-14 13:02 [PATCH 0/9] net: ethernet: ti: cpts: update and fixes Grygorii Strashko
2016-09-14 13:02 ` [PATCH 1/9] net: ethernet: ti: exclude cpts from build when disabled Grygorii Strashko
2016-09-14 13:02 ` [PATCH 2/9] net: ethernet: ti: cpsw: minimize direct access to struct cpts Grygorii Strashko
2016-09-14 13:02 ` [PATCH 3/9] net: ethernet: ti: cpts: rework initialization/deinitialization Grygorii Strashko
2016-09-14 13:52 ` Richard Cochran
2016-09-14 20:10 ` Grygorii Strashko
2016-09-14 20:32 ` Richard Cochran
2016-09-14 20:37 ` Grygorii Strashko
2016-09-14 20:52 ` Richard Cochran
2016-09-14 20:59 ` Grygorii Strashko
2016-09-15 8:13 ` Richard Cochran
2016-09-14 13:02 ` [PATCH 4/9] net: ethernet: ti: cpts: move dt props parsing to cpts driver Grygorii Strashko
2016-09-14 13:55 ` Richard Cochran
2016-09-14 19:45 ` Grygorii Strashko
2016-09-14 20:03 ` Richard Cochran
2016-09-14 13:02 ` [PATCH 5/9] net: ethernet: ti: cpts: add return value to tx and rx timestamp funcitons Grygorii Strashko
2016-09-14 14:00 ` Richard Cochran
2016-09-14 13:02 ` [PATCH 6/9] net: ethernet: ti: cpts: clean up event list if event pool is empty Grygorii Strashko
2016-09-14 14:14 ` Richard Cochran
2016-09-14 19:54 ` Grygorii Strashko
2016-09-14 13:02 ` [PATCH 7/9] net: ethernet: ti: cpts: calc mult and shift from refclk freq Grygorii Strashko
2016-09-14 14:22 ` Richard Cochran
2016-09-14 19:59 ` Grygorii Strashko
2016-09-14 20:26 ` Richard Cochran
2016-09-14 20:47 ` Grygorii Strashko
2016-09-14 21:03 ` Richard Cochran
2016-09-14 21:14 ` Grygorii Strashko
2016-09-15 11:58 ` Richard Cochran
2016-09-15 13:49 ` Richard Cochran
2016-09-14 13:02 ` [PATCH 8/9] net: ethernet: ti: cpts: fix overflow check period Grygorii Strashko
2016-09-14 14:25 ` Richard Cochran [this message]
2016-09-14 20:03 ` Grygorii Strashko
2016-09-14 20:08 ` Richard Cochran
2016-09-14 20:23 ` Grygorii Strashko
2016-09-14 20:43 ` Richard Cochran
2016-09-14 20:48 ` Grygorii Strashko
2016-09-14 13:02 ` [PATCH 9/9] net: ethernet: ti: cpts: switch to readl/writel_relaxed() Grygorii Strashko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160914142503.GF28592@localhost.localdomain \
--to=richardcochran@gmail.com \
--cc=davem@davemloft.net \
--cc=grygorii.strashko@ti.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=mugunthanvnm@ti.com \
--cc=netdev@vger.kernel.org \
--cc=nsekhar@ti.com \
--cc=w-kwok2@ti.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).