linux-kernel - Re: [PATCH v2 4/9] mfd: mt6360: Combine mt6360 pmic/ldo resouces into mt6360 regulator resources

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 31 Jul 2020 10:58:21 +0800
From:   Gene Chen <gene.chen.richtek@...il.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Matthias Brugger <matthias.bgg@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Gene Chen <gene_chen@...htek.com>, benjamin.chao@...iatek.com,
        shufan_lee@...htek.com, cy_huang@...htek.com
Subject: Re: [PATCH v2 4/9] mfd: mt6360: Combine mt6360 pmic/ldo resouces into
 mt6360 regulator resources

Lee Jones <lee.jones@...aro.org> 於 2020年7月28日 週二 下午2:54寫道：
>
> On Tue, 28 Jul 2020, Gene Chen wrote:
>
> > Lee Jones <lee.jones@...aro.org> 於 2020年7月27日 週一 下午7:29寫道：
> > >
> > > On Fri, 17 Jul 2020, Gene Chen wrote:
> > >
> > > > From: Gene Chen <gene_chen@...htek.com>
> > > >
> > > > Combine mt6360 pmic/ldo resouces into mt6360 regulator resources
> > > > to simplify the similar resources object.
> > >
> > > Do the sub-devices actually share these resources, or are you doing
> > > this just to make the code simpler?
> > >
> >
> > They are different resources used by different bucks and ldos without
> > sharing relations.
> > I just to make the code simpler.
>
> I don't think that's sensible.
>
> You should only share resources with child devices that consume them.
>

At first, I separated regulators into two drivers, mt6360-pmic.c and
mt6360-ldo.c, according to default-on power or not.
Then, I merged two drivers into mt6360-regulator.c and merged their
resources as well.
Therefore, for every device of BUCK/LDO, I'll find resources according
to their name and request IRQs.

> > > > Signed-off-by: Gene Chen <gene_chen@...htek.com>
> > > > ---
> > > >  drivers/mfd/mt6360-core.c | 11 +++--------
> > > >  1 file changed, 3 insertions(+), 8 deletions(-)
> > > >
> > > > diff --git a/drivers/mfd/mt6360-core.c b/drivers/mfd/mt6360-core.c
> > > > index 7cc1b59..665e26f 100644
> > > > --- a/drivers/mfd/mt6360-core.c
> > > > +++ b/drivers/mfd/mt6360-core.c
> > > > @@ -265,7 +265,7 @@ static const struct resource mt6360_led_resources[] = {
> > > >       DEFINE_RES_IRQ_NAMED(MT6360_FLED1_STRB_TO_EVT, "fled1_strb_to_evt"),
> > > >  };
> > > >
> > > > -static const struct resource mt6360_pmic_resources[] = {
> > > > +static const struct resource mt6360_regulator_resources[] = {
> > > >       DEFINE_RES_IRQ_NAMED(MT6360_BUCK1_PGB_EVT, "buck1_pgb_evt"),
> > > >       DEFINE_RES_IRQ_NAMED(MT6360_BUCK1_OC_EVT, "buck1_oc_evt"),
> > > >       DEFINE_RES_IRQ_NAMED(MT6360_BUCK1_OV_EVT, "buck1_ov_evt"),
> > > > @@ -278,9 +278,6 @@ static const struct resource mt6360_pmic_resources[] = {
> > > >       DEFINE_RES_IRQ_NAMED(MT6360_LDO7_OC_EVT, "ldo7_oc_evt"),
> > > >       DEFINE_RES_IRQ_NAMED(MT6360_LDO6_PGB_EVT, "ldo6_pgb_evt"),
> > > >       DEFINE_RES_IRQ_NAMED(MT6360_LDO7_PGB_EVT, "ldo7_pgb_evt"),
> > > > -};
> > > > -
> > > > -static const struct resource mt6360_ldo_resources[] = {
> > > >       DEFINE_RES_IRQ_NAMED(MT6360_LDO1_OC_EVT, "ldo1_oc_evt"),
> > > >       DEFINE_RES_IRQ_NAMED(MT6360_LDO2_OC_EVT, "ldo2_oc_evt"),
> > > >       DEFINE_RES_IRQ_NAMED(MT6360_LDO3_OC_EVT, "ldo3_oc_evt"),
> > > > @@ -298,10 +295,8 @@ static const struct mfd_cell mt6360_devs[] = {
> > > >                   NULL, 0, 0, "mediatek,mt6360-chg"),
> > > >       OF_MFD_CELL("mt6360-led", mt6360_led_resources,
> > > >                   NULL, 0, 0, "mediatek,mt6360-led"),
> > > > -     OF_MFD_CELL("mt6360-pmic", mt6360_pmic_resources,
> > > > -                 NULL, 0, 0, "mediatek,mt6360-pmic"),
> > > > -     OF_MFD_CELL("mt6360-ldo", mt6360_ldo_resources,
> > > > -                 NULL, 0, 0, "mediatek,mt6360-ldo"),
> > > > +     OF_MFD_CELL("mt6360-regulator", mt6360_regulator_resources,
> > > > +                 NULL, 0, 0, "mediatek,mt6360-regulator"),
> > > >       OF_MFD_CELL("mt6360-tcpc", NULL,
> > > >                   NULL, 0, 0, "mediatek,mt6360-tcpc"),
> > > >  };
> > >
>
> --
> Lee Jones [李琼斯]
> Senior Technical Lead - Developer Services
> Linaro.org │ Open source software for Arm SoCs
> Follow Linaro: Facebook | Twitter | Blog