diff mbox series

[1/2] pinctrl: mediatek: Add mtk_eint_pm_ops to common-v2

Message ID 20190429032551.65975-2-drinkcat@chromium.org (mailing list archive)
State New, archived
Headers show
Series pinctrl: mediatek: mt8183: Add support for wake sources | expand

Commit Message

Nicolas Boichat April 29, 2019, 3:25 a.m. UTC 
pinctrl variants that include pinctrl-mtk-common-v2.h (and not
pinctrl-mtk-common.h) also need to use mtk_eint_pm_ops to setup
wake mask properly, so copy over the pm_ops to v2.

It is not easy to merge the 2 copies (or move
mtk_eint_suspend/resume to mtk-eint.c), as we need to
dereference pctrl->eint, and struct mtk_pinctrl *pctl has a
different structure definition for v1 and v2.

Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Chuanjia Liu <Chuanjia.Liu@mediatek.com>
---
 .../pinctrl/mediatek/pinctrl-mtk-common-v2.c  | 19 +++++++++++++++++++
 .../pinctrl/mediatek/pinctrl-mtk-common-v2.h  |  1 +
 2 files changed, 20 insertions(+)

Comments

Yingjoe Chen May 2, 2019, 1:48 p.m. UTC | #1 
On Mon, 2019-04-29 at 11:25 +0800, Nicolas Boichat wrote:
> pinctrl variants that include pinctrl-mtk-common-v2.h (and not
> pinctrl-mtk-common.h) also need to use mtk_eint_pm_ops to setup
> wake mask properly, so copy over the pm_ops to v2.
> 
> It is not easy to merge the 2 copies (or move
> mtk_eint_suspend/resume to mtk-eint.c), as we need to
> dereference pctrl->eint, and struct mtk_pinctrl *pctl has a
> different structure definition for v1 and v2.
> 
> Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
> Reviewed-by: Chuanjia Liu <Chuanjia.Liu@mediatek.com>
> ---
>  .../pinctrl/mediatek/pinctrl-mtk-common-v2.c  | 19 +++++++++++++++++++
>  .../pinctrl/mediatek/pinctrl-mtk-common-v2.h  |  1 +
>  2 files changed, 20 insertions(+)
> 
> diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> index 20e1c890e73b30c..7e19b5a4748eafe 100644
> --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> @@ -723,3 +723,22 @@ int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw,
>  
>  	return 0;
>  }
> +
> +static int mtk_eint_suspend(struct device *device)
> +{
> +	struct mtk_pinctrl *pctl = dev_get_drvdata(device);
> +
> +	return mtk_eint_do_suspend(pctl->eint);
> +}
> +
> +static int mtk_eint_resume(struct device *device)
> +{
> +	struct mtk_pinctrl *pctl = dev_get_drvdata(device);
> +
> +	return mtk_eint_do_resume(pctl->eint);
> +}
> +
> +const struct dev_pm_ops mtk_eint_pm_ops = {
> +	.suspend_noirq = mtk_eint_suspend,
> +	.resume_noirq = mtk_eint_resume,
> +};

This is identical to the one in pinctrl-mtk-common.c and will have name
clash if both pinctrl-mtk-common.c and pinctrl-mtk-common-v2.c are
built.

It would be better if we try to merge both version into mtk-eint.c, this
way we could also remove some global functions.

Joe.C
Nicolas Boichat May 3, 2019, 12:52 a.m. UTC | #2 
On Thu, May 2, 2019 at 9:48 PM Yingjoe Chen <yingjoe.chen@mediatek.com> wrote:
>
> On Mon, 2019-04-29 at 11:25 +0800, Nicolas Boichat wrote:
> > pinctrl variants that include pinctrl-mtk-common-v2.h (and not
> > pinctrl-mtk-common.h) also need to use mtk_eint_pm_ops to setup
> > wake mask properly, so copy over the pm_ops to v2.
> >
> > It is not easy to merge the 2 copies (or move
> > mtk_eint_suspend/resume to mtk-eint.c), as we need to
> > dereference pctrl->eint, and struct mtk_pinctrl *pctl has a
> > different structure definition for v1 and v2.
> >
> > Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
> > Reviewed-by: Chuanjia Liu <Chuanjia.Liu@mediatek.com>
> > ---
> >  .../pinctrl/mediatek/pinctrl-mtk-common-v2.c  | 19 +++++++++++++++++++
> >  .../pinctrl/mediatek/pinctrl-mtk-common-v2.h  |  1 +
> >  2 files changed, 20 insertions(+)
> >
> > diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> > index 20e1c890e73b30c..7e19b5a4748eafe 100644
> > --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> > +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> > @@ -723,3 +723,22 @@ int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw,
> >
> >       return 0;
> >  }
> > +
> > +static int mtk_eint_suspend(struct device *device)
> > +{
> > +     struct mtk_pinctrl *pctl = dev_get_drvdata(device);
> > +
> > +     return mtk_eint_do_suspend(pctl->eint);
> > +}
> > +
> > +static int mtk_eint_resume(struct device *device)
> > +{
> > +     struct mtk_pinctrl *pctl = dev_get_drvdata(device);
> > +
> > +     return mtk_eint_do_resume(pctl->eint);
> > +}
> > +
> > +const struct dev_pm_ops mtk_eint_pm_ops = {
> > +     .suspend_noirq = mtk_eint_suspend,
> > +     .resume_noirq = mtk_eint_resume,
> > +};
>
> This is identical to the one in pinctrl-mtk-common.c and will have name
> clash if both pinctrl-mtk-common.c and pinctrl-mtk-common-v2.c are
> built.
>
> It would be better if we try to merge both version into mtk-eint.c, this
> way we could also remove some global functions.

Argh, I didn't think about the name clash, you're right. I guess the
easy way is to rename this one mtk_eint_pm_ops_v2 ...

As highlighted in the commit message, it's tricky to merge the 2 sets
of functions, they look identical, but they actually work on struct
mtk_pinctrl that are defined differently (in
pinctrl-mtk-common[-v2].h), so the ->eint member is at different
addresses...

I don't really see a way around this... Unless we want to change
platform_set_drvdata(pdev, pctl); to pass another type of structure
that could be shared (but I think that'll make the code fairly
verbose, with another layer of indirection). Or just assign struct
mtk_eint to that, since that contains pctl so we could get back the
struct mtk_pinctrl from that, but that feels ugly as well...

>
> Joe.C
>
>
>
> _______________________________________________
> Linux-mediatek mailing list
> Linux-mediatek@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-mediatek
Sean Wang May 3, 2019, 5:08 p.m. UTC | #3 
Hi, Nicolas

On Thu, May 2, 2019 at 5:53 PM Nicolas Boichat <drinkcat@chromium.org> wrote:
>
> On Thu, May 2, 2019 at 9:48 PM Yingjoe Chen <yingjoe.chen@mediatek.com> wrote:
> >
> > On Mon, 2019-04-29 at 11:25 +0800, Nicolas Boichat wrote:
> > > pinctrl variants that include pinctrl-mtk-common-v2.h (and not
> > > pinctrl-mtk-common.h) also need to use mtk_eint_pm_ops to setup
> > > wake mask properly, so copy over the pm_ops to v2.
> > >
> > > It is not easy to merge the 2 copies (or move
> > > mtk_eint_suspend/resume to mtk-eint.c), as we need to
> > > dereference pctrl->eint, and struct mtk_pinctrl *pctl has a
> > > different structure definition for v1 and v2.
> > >
> > > Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
> > > Reviewed-by: Chuanjia Liu <Chuanjia.Liu@mediatek.com>
> > > ---
> > >  .../pinctrl/mediatek/pinctrl-mtk-common-v2.c  | 19 +++++++++++++++++++
> > >  .../pinctrl/mediatek/pinctrl-mtk-common-v2.h  |  1 +
> > >  2 files changed, 20 insertions(+)
> > >
> > > diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> > > index 20e1c890e73b30c..7e19b5a4748eafe 100644
> > > --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> > > +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> > > @@ -723,3 +723,22 @@ int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw,
> > >
> > >       return 0;
> > >  }
> > > +
> > > +static int mtk_eint_suspend(struct device *device)
> > > +{
> > > +     struct mtk_pinctrl *pctl = dev_get_drvdata(device);
> > > +
> > > +     return mtk_eint_do_suspend(pctl->eint);
> > > +}
> > > +
> > > +static int mtk_eint_resume(struct device *device)
> > > +{
> > > +     struct mtk_pinctrl *pctl = dev_get_drvdata(device);
> > > +
> > > +     return mtk_eint_do_resume(pctl->eint);
> > > +}
> > > +
> > > +const struct dev_pm_ops mtk_eint_pm_ops = {
> > > +     .suspend_noirq = mtk_eint_suspend,
> > > +     .resume_noirq = mtk_eint_resume,
> > > +};
> >
> > This is identical to the one in pinctrl-mtk-common.c and will have name
> > clash if both pinctrl-mtk-common.c and pinctrl-mtk-common-v2.c are
> > built.
> >
> > It would be better if we try to merge both version into mtk-eint.c, this
> > way we could also remove some global functions.
>
> Argh, I didn't think about the name clash, you're right. I guess the
> easy way is to rename this one mtk_eint_pm_ops_v2 ...
>
> As highlighted in the commit message, it's tricky to merge the 2 sets
> of functions, they look identical, but they actually work on struct
> mtk_pinctrl that are defined differently (in
> pinctrl-mtk-common[-v2].h), so the ->eint member is at different
> addresses...
>
> I don't really see a way around this... Unless we want to change
> platform_set_drvdata(pdev, pctl); to pass another type of structure
> that could be shared (but I think that'll make the code fairly
> verbose, with another layer of indirection). Or just assign struct
> mtk_eint to that, since that contains pctl so we could get back the
> struct mtk_pinctrl from that, but that feels ugly as well...
>

I agree on renaming would make the thing simple. but I wouldn't like
to rename to mtk_eint_pm_ops_v2 since this would make people
misunderstand that is mtk_eint_v2.

How about renaming to mtk_paris_pinctrl_pm_ops and then place related
logic you added into pinctrl-paris.c? Because I prefer to keep pure
pinctrl hardware operations in pinctrl-mtk-common-v2.c, and for
relevant to other modules (mtk eint) or others subsystem (device tree
binding, GPIO subsytem, PM something like that) they should be moved
to pinctrl-paris.c or pinctrl-moore.c

     Sean

> >
> > Joe.C
> >
> >
> >
> > _______________________________________________
> > Linux-mediatek mailing list
> > Linux-mediatek@lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-mediatek
Nicolas Boichat May 8, 2019, 7:39 a.m. UTC | #4 
On Sat, May 4, 2019 at 2:09 AM Sean Wang <sean.wang@kernel.org> wrote:
>
> Hi, Nicolas
>
> On Thu, May 2, 2019 at 5:53 PM Nicolas Boichat <drinkcat@chromium.org> wrote:
> >
> > On Thu, May 2, 2019 at 9:48 PM Yingjoe Chen <yingjoe.chen@mediatek.com> wrote:
> > >
> > > On Mon, 2019-04-29 at 11:25 +0800, Nicolas Boichat wrote:
> > > > pinctrl variants that include pinctrl-mtk-common-v2.h (and not
> > > > pinctrl-mtk-common.h) also need to use mtk_eint_pm_ops to setup
> > > > wake mask properly, so copy over the pm_ops to v2.
> > > >
> > > > It is not easy to merge the 2 copies (or move
> > > > mtk_eint_suspend/resume to mtk-eint.c), as we need to
> > > > dereference pctrl->eint, and struct mtk_pinctrl *pctl has a
> > > > different structure definition for v1 and v2.
> > > >
> > > > Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
> > > > Reviewed-by: Chuanjia Liu <Chuanjia.Liu@mediatek.com>
> > > > ---
> > > >  .../pinctrl/mediatek/pinctrl-mtk-common-v2.c  | 19 +++++++++++++++++++
> > > >  .../pinctrl/mediatek/pinctrl-mtk-common-v2.h  |  1 +
> > > >  2 files changed, 20 insertions(+)
> > > >
> > > > diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> > > > index 20e1c890e73b30c..7e19b5a4748eafe 100644
> > > > --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> > > > +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> > > > @@ -723,3 +723,22 @@ int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw,
> > > >
> > > >       return 0;
> > > >  }
> > > > +
> > > > +static int mtk_eint_suspend(struct device *device)
> > > > +{
> > > > +     struct mtk_pinctrl *pctl = dev_get_drvdata(device);
> > > > +
> > > > +     return mtk_eint_do_suspend(pctl->eint);
> > > > +}
> > > > +
> > > > +static int mtk_eint_resume(struct device *device)
> > > > +{
> > > > +     struct mtk_pinctrl *pctl = dev_get_drvdata(device);
> > > > +
> > > > +     return mtk_eint_do_resume(pctl->eint);
> > > > +}
> > > > +
> > > > +const struct dev_pm_ops mtk_eint_pm_ops = {
> > > > +     .suspend_noirq = mtk_eint_suspend,
> > > > +     .resume_noirq = mtk_eint_resume,
> > > > +};
> > >
> > > This is identical to the one in pinctrl-mtk-common.c and will have name
> > > clash if both pinctrl-mtk-common.c and pinctrl-mtk-common-v2.c are
> > > built.
> > >
> > > It would be better if we try to merge both version into mtk-eint.c, this
> > > way we could also remove some global functions.
> >
> > Argh, I didn't think about the name clash, you're right. I guess the
> > easy way is to rename this one mtk_eint_pm_ops_v2 ...
> >
> > As highlighted in the commit message, it's tricky to merge the 2 sets
> > of functions, they look identical, but they actually work on struct
> > mtk_pinctrl that are defined differently (in
> > pinctrl-mtk-common[-v2].h), so the ->eint member is at different
> > addresses...
> >
> > I don't really see a way around this... Unless we want to change
> > platform_set_drvdata(pdev, pctl); to pass another type of structure
> > that could be shared (but I think that'll make the code fairly
> > verbose, with another layer of indirection). Or just assign struct
> > mtk_eint to that, since that contains pctl so we could get back the
> > struct mtk_pinctrl from that, but that feels ugly as well...
> >
>
> I agree on renaming would make the thing simple. but I wouldn't like
> to rename to mtk_eint_pm_ops_v2 since this would make people
> misunderstand that is mtk_eint_v2.
>
> How about renaming to mtk_paris_pinctrl_pm_ops and then place related
> logic you added into pinctrl-paris.c? Because I prefer to keep pure
> pinctrl hardware operations in pinctrl-mtk-common-v2.c, and for
> relevant to other modules (mtk eint) or others subsystem (device tree
> binding, GPIO subsytem, PM something like that) they should be moved
> to pinctrl-paris.c or pinctrl-moore.c

Sounds reasonable. I uploaded a v2 that does just that.

Note that we'd still have to duplicate this code between paris and
moore, if we wanted to implement pm_ops in moore as well, but maybe
that's ok for now.

>      Sean
>
> > >
> > > Joe.C
> > >
> > >
> > >
> > > _______________________________________________
> > > Linux-mediatek mailing list
> > > Linux-mediatek@lists.infradead.org
> > > http://lists.infradead.org/mailman/listinfo/linux-mediatek
diff mbox series

Patch

diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
index 20e1c890e73b30c..7e19b5a4748eafe 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
@@ -723,3 +723,22 @@  int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw,
 
 	return 0;
 }
+
+static int mtk_eint_suspend(struct device *device)
+{
+	struct mtk_pinctrl *pctl = dev_get_drvdata(device);
+
+	return mtk_eint_do_suspend(pctl->eint);
+}
+
+static int mtk_eint_resume(struct device *device)
+{
+	struct mtk_pinctrl *pctl = dev_get_drvdata(device);
+
+	return mtk_eint_do_resume(pctl->eint);
+}
+
+const struct dev_pm_ops mtk_eint_pm_ops = {
+	.suspend_noirq = mtk_eint_suspend,
+	.resume_noirq = mtk_eint_resume,
+};
diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h
index 1b7da42aa1d53e4..e2048db5bb16671 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h
@@ -299,4 +299,5 @@  int mtk_pinconf_adv_drive_set(struct mtk_pinctrl *hw,
 int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw,
 			      const struct mtk_pin_desc *desc, u32 *val);
 
+extern const struct dev_pm_ops mtk_eint_pm_ops;
 #endif /* __PINCTRL_MTK_COMMON_V2_H */