From: Doug Anderson <dianders@chromium.org>
To: Maulik Shah <mkshah@codeaurora.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>,
Marc Zyngier <maz@kernel.org>, LinusW <linus.walleij@linaro.org>,
Stephen Boyd <swboyd@chromium.org>,
Evan Green <evgreen@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-arm-msm <linux-arm-msm@vger.kernel.org>,
"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
Andy Gross <agross@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Jason Cooper <jason@lakedaemon.net>,
Rajendra Nayak <rnayak@codeaurora.org>,
Lina Iyer <ilina@codeaurora.org>,
Srinivas Rao L <lsrao@codeaurora.org>
Subject: Re: [PATCH v4 3/7] genirq: Introduce irq_suspend_one() and irq_resume_one() callbacks
Date: Tue, 11 Aug 2020 13:09:01 -0700 [thread overview]
Message-ID: <CAD=FV=XH3183sJiP68v_Ka2+b=rYb8Y=7G=RcdbxdsK+nzyW=g@mail.gmail.com> (raw)
In-Reply-To: <1597058460-16211-4-git-send-email-mkshah@codeaurora.org>
Hi,
On Mon, Aug 10, 2020 at 4:21 AM Maulik Shah <mkshah@codeaurora.org> wrote:
>
> From: Douglas Anderson <dianders@chromium.org>
>
> The "struct irq_chip" has two callbacks in it: irq_suspend() and
> irq_resume(). These two callbacks are interesting because sometimes
> an irq chip needs to know about suspend/resume, but they are a bit
> awkward because:
> 1. They are called once for the whole irq_chip, not once per IRQ.
> It's passed data for one of the IRQs enabled on that chip. That
> means it's up to the irq_chip driver to aggregate.
> 2. They are only called if you're using "generic-chip", which not
> everyone is.
> 3. The implementation uses syscore ops, which apparently have problems
> with s2idle.
>
> Probably the old irq_suspend() and irq_resume() callbacks should be
> deprecated.
>
> Let's introcuce a nicer API that works for all irq_chip devices. This
You grabbed my patch (which is great, thanks!) but forgot to address
Stephen's early feedback from <https://crrev.com/c/2321123>.
Specifically:
s/introcuce/introduce
> --- a/include/linux/irq.h
> +++ b/include/linux/irq.h
> @@ -468,10 +468,16 @@ static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d)
> * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips
> * @irq_cpu_online: configure an interrupt source for a secondary CPU
> * @irq_cpu_offline: un-configure an interrupt source for a secondary CPU
> + * @irq_suspend_one: called on an every irq to suspend it; called even if
> + * this IRQ is configured for wakeup
s/called on an/called on
> + * @irq_resume_one: called on an every irq to resume it; called even if
> + * this IRQ is configured for wakeup
s/called on an/called on
-Doug
next prev parent reply other threads:[~2020-08-11 20:09 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-10 11:20 [PATCH v4 0/7] irqchip: qcom: pdc: Introduce irq_set_wake call Maulik Shah
2020-08-10 11:20 ` [PATCH v4 1/7] pinctrl: qcom: Add msmgpio irqchip flags Maulik Shah
2020-08-11 19:32 ` Stephen Boyd
2020-08-13 5:47 ` Maulik Shah
2020-08-11 20:04 ` Doug Anderson
2020-08-10 11:20 ` [PATCH v4 2/7] pinctrl: qcom: Use return value from irq_set_wake call Maulik Shah
2020-08-11 19:34 ` Stephen Boyd
2020-08-11 20:06 ` Doug Anderson
2020-08-13 7:17 ` Maulik Shah
2020-08-13 7:21 ` Stephen Boyd
2020-08-27 22:46 ` Linus Walleij
2020-08-10 11:20 ` [PATCH v4 3/7] genirq: Introduce irq_suspend_one() and irq_resume_one() callbacks Maulik Shah
2020-08-11 20:09 ` Doug Anderson [this message]
2020-08-13 7:18 ` Maulik Shah
2020-08-13 9:29 ` Thomas Gleixner
2020-08-13 16:09 ` Doug Anderson
2020-08-13 22:09 ` Thomas Gleixner
2020-08-13 22:58 ` Doug Anderson
2020-08-14 2:07 ` Thomas Gleixner
2020-08-14 3:04 ` Doug Anderson
2020-08-14 12:43 ` Thomas Gleixner
2020-08-18 4:35 ` Maulik Shah
2020-08-18 14:40 ` Thomas Gleixner
2020-08-10 11:20 ` [PATCH v4 4/7] genirq: introduce irq_suspend_parent() and irq_resume_parent() Maulik Shah
2020-08-11 20:10 ` Doug Anderson
2020-08-13 7:19 ` Maulik Shah
2020-08-10 11:20 ` [PATCH v4 5/7] pinctrl: qcom: Call our parent for irq_suspend_one / irq_resume_one Maulik Shah
2020-08-10 11:20 ` [PATCH v4 6/7] irqchip: qcom-pdc: Unmask wake up irqs during suspend Maulik Shah
2020-08-10 11:21 ` [PATCH v4 7/7] irqchip: qcom-pdc: Reset all pdc interrupts during init Maulik Shah
2020-08-10 12:09 ` Felipe Balbi
2020-08-13 7:21 ` Maulik Shah
2020-08-11 21:31 ` Stephen Boyd
2020-08-13 7:30 ` Maulik Shah
2020-08-14 20:24 ` Stephen Boyd
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='CAD=FV=XH3183sJiP68v_Ka2+b=rYb8Y=7G=RcdbxdsK+nzyW=g@mail.gmail.com' \
--to=dianders@chromium.org \
--cc=agross@kernel.org \
--cc=bjorn.andersson@linaro.org \
--cc=evgreen@chromium.org \
--cc=ilina@codeaurora.org \
--cc=jason@lakedaemon.net \
--cc=linus.walleij@linaro.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-gpio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=lsrao@codeaurora.org \
--cc=maz@kernel.org \
--cc=mka@chromium.org \
--cc=mkshah@codeaurora.org \
--cc=rnayak@codeaurora.org \
--cc=swboyd@chromium.org \
--cc=tglx@linutronix.de \
/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).