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Date: Wed, 13 Dec 2017 10:48:53 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: Viresh Kumar <viresh.kumar@...aro.org> Cc: Vincent Guittot <vincent.guittot@...aro.org>, Stephen Boyd <sboyd@...eaurora.org>, Rajendra Nayak <rnayak@...eaurora.org>, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, robdclark@...il.com, s.hauer@...gutronix.de, l.stach@...gutronix.de, shawnguo@...nel.org, fabio.estevam@....com, nm@...com, xuwei5@...ilicon.com, robh+dt@...nel.org Subject: Re: [PATCH V4 04/12] boot_constraint: Add support for supply constraints On Sun, Oct 29, 2017 at 07:18:52PM +0530, Viresh Kumar wrote: > This patch adds the first constraint type: power-supply. > > The constraint is set by enabling the regulator and setting a voltage > range (if required) for the respective regulator device, which will be > honored by the regulator core even if more users turn up. Once the > device is probed, the regulator is released and the constraint is > removed. > > Tested-by: Rajendra Nayak <rnayak@...eaurora.org> > Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org> > --- > drivers/boot_constraints/Makefile | 2 +- > drivers/boot_constraints/core.c | 4 ++ > drivers/boot_constraints/core.h | 3 ++ > drivers/boot_constraints/supply.c | 98 +++++++++++++++++++++++++++++++++++++++ > include/linux/boot_constraint.h | 8 +++- > 5 files changed, 113 insertions(+), 2 deletions(-) > create mode 100644 drivers/boot_constraints/supply.c > > diff --git a/drivers/boot_constraints/Makefile b/drivers/boot_constraints/Makefile > index 0f2680177974..a45616f0c3b0 100644 > --- a/drivers/boot_constraints/Makefile > +++ b/drivers/boot_constraints/Makefile > @@ -1,3 +1,3 @@ > # Makefile for device boot constraints > > -obj-y := core.o > +obj-y := core.o supply.o > diff --git a/drivers/boot_constraints/core.c b/drivers/boot_constraints/core.c > index 366a05d6d9ba..b9c024a3bdf5 100644 > --- a/drivers/boot_constraints/core.c > +++ b/drivers/boot_constraints/core.c > @@ -94,6 +94,10 @@ static struct constraint *constraint_allocate(struct constraint_dev *cdev, > void (*remove)(struct constraint *constraint); > > switch (type) { > + case DEV_BOOT_CONSTRAINT_SUPPLY: > + add = constraint_supply_add; > + remove = constraint_supply_remove; > + break; > default: > return ERR_PTR(-EINVAL); > } > diff --git a/drivers/boot_constraints/core.h b/drivers/boot_constraints/core.h > index 7ba4ac172c09..73b9d2d22a12 100644 > --- a/drivers/boot_constraints/core.h > +++ b/drivers/boot_constraints/core.h > @@ -30,4 +30,7 @@ struct constraint { > }; > > /* Forward declarations of constraint specific callbacks */ > +int constraint_supply_add(struct constraint *constraint, void *data); > +void constraint_supply_remove(struct constraint *constraint); > + > #endif /* _CORE_H */ > diff --git a/drivers/boot_constraints/supply.c b/drivers/boot_constraints/supply.c > new file mode 100644 > index 000000000000..30f816dbf12c > --- /dev/null > +++ b/drivers/boot_constraints/supply.c > @@ -0,0 +1,98 @@ > +/* > + * Copyright (C) 2017 Linaro. > + * Viresh Kumar <viresh.kumar@...aro.org> > + * > + * This file is released under the GPLv2. > + */ > + > +#define pr_fmt(fmt) "Supply Boot Constraints: " fmt And again :)
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