Re: [PATCH v2 12/19] media: imx: Add SMFC subdev driver

[Steve Longerbeam]

On 01/04/2017 06:23 AM, Vladimir Zapolskiy wrote:
> On 01/03/2017 10:57 PM, Steve Longerbeam wrote:
> > This is a media entity subdevice driver for the i.MX Sensor Multi-FIFO
> > Controller module. Video frames are received from the CSI and can
> > be routed to various sinks including the i.MX Image Converter for
> > scaling, color-space conversion, motion compensated deinterlacing,
> > and image rotation.
> >
> > Signed-off-by: Steve Longerbeam <steve_longerbeam@xxxxxxxxxx>
> > ---
> >   drivers/staging/media/imx/Makefile   |   1 +
> >   drivers/staging/media/imx/imx-smfc.c | 739 +++++++++++++++++++++++++++++++++++
> >   2 files changed, 740 insertions(+)
> >   create mode 100644 drivers/staging/media/imx/imx-smfc.c
> >
> > diff --git a/drivers/staging/media/imx/Makefile b/drivers/staging/media/imx/Makefile
> > index 133672a..3559d7b 100644
> > --- a/drivers/staging/media/imx/Makefile
> > +++ b/drivers/staging/media/imx/Makefile
> > @@ -5,4 +5,5 @@ obj-$(CONFIG_VIDEO_IMX_MEDIA) += imx-media.o
> >   obj-$(CONFIG_VIDEO_IMX_MEDIA) += imx-media-common.o
> >   
> >   obj-$(CONFIG_VIDEO_IMX_CAMERA) += imx-csi.o
> > +obj-$(CONFIG_VIDEO_IMX_CAMERA) += imx-smfc.o
> May be
>
> obj-$(CONFIG_VIDEO_IMX_CAMERA) += imx-csi.o imx-smfc.o

I'd prefer to keep them on separate lines, to indicate they
are all built as separate modules.

> >   
> > diff --git a/drivers/staging/media/imx/imx-smfc.c b/drivers/staging/media/imx/imx-smfc.c
> > new file mode 100644
> > index 0000000..565048c
> > --- /dev/null
> > +++ b/drivers/staging/media/imx/imx-smfc.c
> > @@ -0,0 +1,739 @@
> > +/*
> > + * V4L2 Capture SMFC Subdev for Freescale i.MX5/6 SOC
> > + *
> > + * This subdevice handles capture of raw/unconverted video frames
> > + * from the CSI, directly to memory via the Sensor Multi-FIFO Controller.
> > + *
> > + * Copyright (c) 2012-2016 Mentor Graphics Inc.
> > + *
> > + * This program is free software; you can redistribute it and/or modify
> > + * it under the terms of the GNU General Public License as published by
> > + * the Free Software Foundation; either version 2 of the License, or
> > + * (at your option) any later version.
> > + */
> > +#include <linux/module.h>
> > +#include <linux/delay.h>
> > +#include <linux/fs.h>
> > +#include <linux/timer.h>
> > +#include <linux/sched.h>
> > +#include <linux/slab.h>
> > +#include <linux/interrupt.h>
> > +#include <linux/spinlock.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/pinctrl/consumer.h>
> > +#include <media/v4l2-device.h>
> > +#include <media/v4l2-ioctl.h>
> > +#include <media/videobuf2-dma-contig.h>
> > +#include <media/v4l2-subdev.h>
> > +#include <media/v4l2-of.h>
> > +#include <media/v4l2-ctrls.h>
> Please sort the list of headers alphabetically.

done.

> > +static irqreturn_t imx_smfc_eof_interrupt(int irq, void *dev_id)
> > +{
> > +	struct imx_smfc_priv *priv = dev_id;
> > +	struct imx_media_dma_buf *done, *next;
> > +	unsigned long flags;
> > +
> > +	spin_lock_irqsave(&priv->irqlock, flags);
> spin_lock(&priv->irqlock) should be sufficient.

yes thanks.

> > +
> > +static const struct platform_device_id imx_smfc_ids[] = {
> > +	{ .name = "imx-ipuv3-smfc" },
> > +	{ },
> > +};
> > +MODULE_DEVICE_TABLE(platform, imx_smfc_ids);
> > +
> > +static struct platform_driver imx_smfc_driver = {
> > +	.probe = imx_smfc_probe,
> > +	.remove = imx_smfc_remove,
> > +	.id_table = imx_smfc_ids,
> > +	.driver = {
> > +		.name = "imx-ipuv3-smfc",
> > +		.owner = THIS_MODULE,
> You can drop owner assignment.

done.


Steve