linux-kernel - RE: [PATCH] device property: Add fwnode

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Message-ID: <BY5PR02MB6916AEC2CCB6EAE49A7FBC47A9999@BY5PR02MB6916.namprd02.prod.outlook.com>
Date:   Tue, 16 Nov 2021 09:23:10 +0000
From:   Anand Ashok Dumbre <ANANDASH@...inx.com>
To:     Greg KH <gregkh@...uxfoundation.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "jic23@...nel.org" <jic23@...nel.org>,
        "lars@...afoo.de" <lars@...afoo.de>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        git <git@...inx.com>, Michal Simek <michals@...inx.com>,
        "rafael@...nel.org" <rafael@...nel.org>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        "andriy.shevchenko@...ux.intel.com" 
        <andriy.shevchenko@...ux.intel.com>,
        "heikki.krogerus@...ux.intel.com" <heikki.krogerus@...ux.intel.com>
Subject: RE: [PATCH] device property: Add fwnode_iomap()

Hi Greg,

Thanks for the review.

> -----Original Message-----
> From: Greg KH <gregkh@...uxfoundation.org>
> Sent: Monday 15 November 2021 6:09 PM
> To: Anand Ashok Dumbre <ANANDASH@...inx.com>
> Cc: linux-kernel@...r.kernel.org; jic23@...nel.org; lars@...afoo.de; linux-
> iio@...r.kernel.org; git <git@...inx.com>; Michal Simek
> <michals@...inx.com>; rafael@...nel.org; linux-acpi@...r.kernel.org;
> andriy.shevchenko@...ux.intel.com; heikki.krogerus@...ux.intel.com
> Subject: Re: [PATCH] device property: Add fwnode_iomap()
> 
> On Mon, Nov 15, 2021 at 05:38:19PM +0000, Anand Ashok Dumbre wrote:
> > This patch introduces a new helper routine - fwnode_iomap(), which
> > allows to map the memory mapped IO for a given device node.
> >
> > Signed-off-by: Anand Ashok Dumbre <anand.ashok.dumbre@...inx.com>
> > ---
> >  drivers/base/property.c  | 15 +++++++++++++++
> > include/linux/property.h |  2 ++
> >  2 files changed, 17 insertions(+)
> >
> > diff --git a/drivers/base/property.c b/drivers/base/property.c index
> > 453918eb7390..9323e9b5de02 100644
> > --- a/drivers/base/property.c
> > +++ b/drivers/base/property.c
> > @@ -1021,6 +1021,21 @@ int fwnode_irq_get(const struct fwnode_handle
> > *fwnode, unsigned int index)  }  EXPORT_SYMBOL(fwnode_irq_get);
> >
> > +/**
> > + * fwnode_iomap - Maps the memory mapped IO for a given fwnode
> > + * @fwnode:	Pointer to the firmware node
> > + * @index:	Index of the IO range
> > + *
> > + * Returns a pointer to the mapped memory.
> > + */
> > +void __iomem *fwnode_iomap(struct fwnode_handle *fwnode, int
> index) {
> > +	if (is_of_node(fwnode))
> > +		return of_iomap(to_of_node(fwnode), index);
> > +
> > +	return NULL;
> > +}
> > +EXPORT_SYMBOL(fwnode_iomap);
> > +
> >  /**
> >   * fwnode_graph_get_next_endpoint - Get next endpoint firmware node
> >   * @fwnode: Pointer to the parent firmware node diff --git
> > a/include/linux/property.h b/include/linux/property.h index
> > 357513a977e5..9bb0b0155402 100644
> > --- a/include/linux/property.h
> > +++ b/include/linux/property.h
> > @@ -121,6 +121,8 @@ void fwnode_handle_put(struct fwnode_handle
> > *fwnode);
> >
> >  int fwnode_irq_get(const struct fwnode_handle *fwnode, unsigned int
> > index);
> >
> > +void __iomem *fwnode_iomap(struct fwnode_handle *fwnode, int
> index);
> > +
> >  unsigned int device_get_child_node_count(struct device *dev);
> >
> >  static inline bool device_property_read_bool(struct device *dev,
> > --
> > 2.17.1
> >
> 
> Also, always run scripts/checkpatch.pl before sending patches out so you
> do not get grumpy maintainers telling you to run scripts/checkpatch.pl
> on your patches :)
> 

Sorry. Will do and also will send it as a part of my other driver series.

> thanks,
> 
> greg k-h