From: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
To: Andrew Bresticker <abrestic@chromium.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Linux-MIPS <linux-mips@linux-mips.org>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
James Hartley <james.hartley@imgtec.com>,
James Hogan <james.hogan@imgtec.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
Damien Horsley <Damien.Horsley@imgtec.com>,
Govindraj Raja <Govindraj.Raja@imgtec.com>
Subject: Re: [PATCH 3/7] clocksource: mips-gic: Split clocksource and clockevent initialization
Date: Thu, 21 May 2015 19:25:32 -0300 [thread overview]
Message-ID: <555E5B5C.9050807@imgtec.com> (raw)
In-Reply-To: <CAL1qeaFkzpH+nGqRPOuY-L62jP8NgZWP0WxKTYKXZDpe1sSojg@mail.gmail.com>
On 05/21/2015 07:24 PM, Andrew Bresticker wrote:
> On Thu, May 21, 2015 at 2:37 PM, Ezequiel Garcia
> <ezequiel.garcia@imgtec.com> wrote:
>> This is preparation work for the introduction of clockevent frequency
>> update with a clock notifier. This is only possible when the device
>> is passed a clk struct, so let's split the legacy and devicetree
>> initialization.
>>
>> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
>> ---
>> drivers/clocksource/mips-gic-timer.c | 13 ++++++++-----
>> 1 file changed, 8 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/clocksource/mips-gic-timer.c b/drivers/clocksource/mips-gic-timer.c
>> index c4352f0..22a4daf 100644
>> --- a/drivers/clocksource/mips-gic-timer.c
>> +++ b/drivers/clocksource/mips-gic-timer.c
>> @@ -142,11 +142,6 @@ static void __init __gic_clocksource_init(void)
>> ret = clocksource_register_hz(&gic_clocksource, gic_frequency);
>> if (ret < 0)
>> pr_warn("GIC: Unable to register clocksource\n");
>> -
>> - gic_clockevent_init();
>> -
>> - /* And finally start the counter */
>> - gic_start_count();
>> }
>
> Instead of duplicating this bit in both the OF and non-OF paths, maybe
> it would be better to do the notifier registration in
> gic_clockevent_init(), either by passing around the struct clk or
> making it a global?
>
Yeah, I had something like that first, but somehow it looked ugly to have:
gic_clockevent_init(IS_ERR(clk) ? NULL : clk);
Don't have a strong opinion though.
--
Ezequiel
WARNING: multiple messages have this Message-ID (diff)
From: Ezequiel Garcia <ezequiel.garcia-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>
To: Andrew Bresticker <abrestic-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Cc: "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Linux-MIPS <linux-mips-6z/3iImG2C8G8FEW9MqTrA@public.gmane.org>,
Daniel Lezcano
<daniel.lezcano-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
"devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
James Hartley
<james.hartley-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>,
James Hogan <james.hogan-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
Damien Horsley
<Damien.Horsley-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>,
Govindraj Raja
<Govindraj.Raja-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH 3/7] clocksource: mips-gic: Split clocksource and clockevent initialization
Date: Thu, 21 May 2015 19:25:32 -0300 [thread overview]
Message-ID: <555E5B5C.9050807@imgtec.com> (raw)
In-Reply-To: <CAL1qeaFkzpH+nGqRPOuY-L62jP8NgZWP0WxKTYKXZDpe1sSojg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On 05/21/2015 07:24 PM, Andrew Bresticker wrote:
> On Thu, May 21, 2015 at 2:37 PM, Ezequiel Garcia
> <ezequiel.garcia-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org> wrote:
>> This is preparation work for the introduction of clockevent frequency
>> update with a clock notifier. This is only possible when the device
>> is passed a clk struct, so let's split the legacy and devicetree
>> initialization.
>>
>> Signed-off-by: Ezequiel Garcia <ezequiel.garcia-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>
>> ---
>> drivers/clocksource/mips-gic-timer.c | 13 ++++++++-----
>> 1 file changed, 8 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/clocksource/mips-gic-timer.c b/drivers/clocksource/mips-gic-timer.c
>> index c4352f0..22a4daf 100644
>> --- a/drivers/clocksource/mips-gic-timer.c
>> +++ b/drivers/clocksource/mips-gic-timer.c
>> @@ -142,11 +142,6 @@ static void __init __gic_clocksource_init(void)
>> ret = clocksource_register_hz(&gic_clocksource, gic_frequency);
>> if (ret < 0)
>> pr_warn("GIC: Unable to register clocksource\n");
>> -
>> - gic_clockevent_init();
>> -
>> - /* And finally start the counter */
>> - gic_start_count();
>> }
>
> Instead of duplicating this bit in both the OF and non-OF paths, maybe
> it would be better to do the notifier registration in
> gic_clockevent_init(), either by passing around the struct clk or
> making it a global?
>
Yeah, I had something like that first, but somehow it looked ugly to have:
gic_clockevent_init(IS_ERR(clk) ? NULL : clk);
Don't have a strong opinion though.
--
Ezequiel
--
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next prev parent reply other threads:[~2015-05-21 22:31 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-21 21:37 [PATCH 0/7] Clocksource changes for Pistachio CPUFreq Ezequiel Garcia
2015-05-21 21:37 ` Ezequiel Garcia
2015-05-21 21:37 ` Ezequiel Garcia
2015-05-21 21:37 ` [PATCH 1/7] clocksource: mips-gic: Enable the clock before using it Ezequiel Garcia
2015-05-21 21:37 ` Ezequiel Garcia
2015-05-21 21:37 ` Ezequiel Garcia
2015-05-21 22:17 ` Andrew Bresticker
2015-05-21 22:17 ` Andrew Bresticker
2015-05-21 21:37 ` [PATCH 2/7] clocksource: mips-gic: Add missing error returns checks Ezequiel Garcia
2015-05-21 21:37 ` Ezequiel Garcia
2015-05-21 22:18 ` Andrew Bresticker
2015-05-21 22:18 ` Andrew Bresticker
2015-05-21 21:37 ` [PATCH 3/7] clocksource: mips-gic: Split clocksource and clockevent initialization Ezequiel Garcia
2015-05-21 21:37 ` Ezequiel Garcia
2015-05-21 21:37 ` Ezequiel Garcia
2015-05-21 22:24 ` Andrew Bresticker
2015-05-21 22:25 ` Ezequiel Garcia [this message]
2015-05-21 22:25 ` Ezequiel Garcia
2015-05-22 16:53 ` Andrew Bresticker
2015-05-22 16:53 ` Andrew Bresticker
2015-05-21 21:37 ` [PATCH 4/7] clocksource: mips-gic: Update clockevent frequency on clock rate changes Ezequiel Garcia
2015-05-21 21:37 ` Ezequiel Garcia
2015-05-21 21:37 ` Ezequiel Garcia
2015-05-21 22:32 ` Andrew Bresticker
2015-05-21 22:32 ` Andrew Bresticker
2015-05-21 22:30 ` Ezequiel Garcia
2015-05-21 22:30 ` Ezequiel Garcia
2015-05-21 21:41 ` [PATCH 5/7] clocksource: Add Pistachio SoC general purpose timer binding document Ezequiel Garcia
2015-05-21 21:41 ` Ezequiel Garcia
2015-05-21 23:41 ` Andrew Bresticker
2015-05-21 21:41 ` [PATCH 6/7] clocksource: Add Pistachio clocksource-only driver Ezequiel Garcia
2015-05-21 21:41 ` Ezequiel Garcia
2015-05-21 21:41 ` Ezequiel Garcia
2015-05-21 22:00 ` Thomas Gleixner
2015-05-21 22:02 ` Ezequiel Garcia
2015-05-21 22:02 ` Ezequiel Garcia
2015-05-21 22:02 ` Ezequiel Garcia
2015-05-21 22:09 ` Thomas Gleixner
2015-05-21 22:09 ` Thomas Gleixner
2015-05-22 16:48 ` Andrew Bresticker
2015-05-26 14:16 ` Ezequiel Garcia
2015-05-26 14:16 ` Ezequiel Garcia
2015-05-21 21:43 ` [PATCH 7/7] mips: pistachio: Allow to enable the external timer based clocksource Ezequiel Garcia
2015-05-21 21:43 ` Ezequiel Garcia
2015-05-22 16:50 ` Andrew Bresticker
2015-05-22 16:50 ` Andrew Bresticker
2015-05-22 16:58 ` James Hartley
2015-05-22 16:58 ` James Hartley
2015-05-22 18:08 ` Ezequiel Garcia
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