linux-kernel - Re: [PATCH 04/15] media: pxa_camera: remove the dmaengine compat need

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Date:   Fri, 4 May 2018 16:29:32 -0300
From:   Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
To:     Hans Verkuil <hverkuil@...all.nl>
Cc:     Robert Jarzmik <robert.jarzmik@...e.fr>,
        Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Tejun Heo <tj@...nel.org>, Vinod Koul <vinod.koul@...el.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Richard Weinberger <richard@....at>,
        Cyrille Pitchen <cyrille.pitchen@...ev4u.fr>,
        Nicolas Pitre <nico@...xnic.net>,
        Samuel Ortiz <samuel@...tiz.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Petr Cvek <petr.cvek@....cz>,
        Sakari Ailus <sakari.ailus@....fi>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Pravin Shedge <pravin.shedge4linux@...il.com>,
        Flavio Ceolin <flavio.ceolin@...el.com>,
        Robert Jarzmik <robert.jarzmik@...ault.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-ide@...r.kernel.org, dmaengine@...r.kernel.org,
        linux-media@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-mtd@...ts.infradead.org, netdev@...r.kernel.org,
        devel@...verdev.osuosl.org, alsa-devel@...a-project.org,
        Niklas Söderlund 
        <niklas.soderlund+renesas@...natech.se>
Subject: Re: [PATCH 04/15] media: pxa_camera: remove the dmaengine compat
 need

Em Sun, 22 Apr 2018 13:06:12 +0200
Hans Verkuil <hverkuil@...all.nl> escreveu:

> On 04/02/2018 04:26 PM, Robert Jarzmik wrote:
> > From: Robert Jarzmik <robert.jarzmik@...ault.com>
> > 
> > As the pxa architecture switched towards the dmaengine slave map, the
> > old compatibility mechanism to acquire the dma requestor line number and
> > priority are not needed anymore.
> > 
> > This patch simplifies the dma resource acquisition, using the more
> > generic function dma_request_slave_channel().
> > 
> > Signed-off-by: Robert Jarzmik <robert.jarzmik@...e.fr>  
> 
> Acked-by: Hans Verkuil <hans.verkuil@...co.com>

I'm assuming that you'll be applying it together with other PXA patches.
So:

Acked-by: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>

Regards,
Mauro
> 
> Regards,
> 
> 	Hans
> 
> > ---
> >  drivers/media/platform/pxa_camera.c | 22 +++-------------------
> >  1 file changed, 3 insertions(+), 19 deletions(-)
> > 
> > diff --git a/drivers/media/platform/pxa_camera.c b/drivers/media/platform/pxa_camera.c
> > index c71a00736541..4c82d1880753 100644
> > --- a/drivers/media/platform/pxa_camera.c
> > +++ b/drivers/media/platform/pxa_camera.c
> > @@ -2357,8 +2357,6 @@ static int pxa_camera_probe(struct platform_device *pdev)
> >  		.src_maxburst = 8,
> >  		.direction = DMA_DEV_TO_MEM,
> >  	};
> > -	dma_cap_mask_t mask;
> > -	struct pxad_param params;
> >  	char clk_name[V4L2_CLK_NAME_SIZE];
> >  	int irq;
> >  	int err = 0, i;
> > @@ -2432,34 +2430,20 @@ static int pxa_camera_probe(struct platform_device *pdev)
> >  	pcdev->base = base;
> >  
> >  	/* request dma */
> > -	dma_cap_zero(mask);
> > -	dma_cap_set(DMA_SLAVE, mask);
> > -	dma_cap_set(DMA_PRIVATE, mask);
> > -
> > -	params.prio = 0;
> > -	params.drcmr = 68;
> > -	pcdev->dma_chans[0] =
> > -		dma_request_slave_channel_compat(mask, pxad_filter_fn,
> > -						 &params, &pdev->dev, "CI_Y");
> > +	pcdev->dma_chans[0] = dma_request_slave_channel(&pdev->dev, "CI_Y");
> >  	if (!pcdev->dma_chans[0]) {
> >  		dev_err(&pdev->dev, "Can't request DMA for Y\n");
> >  		return -ENODEV;
> >  	}
> >  
> > -	params.drcmr = 69;
> > -	pcdev->dma_chans[1] =
> > -		dma_request_slave_channel_compat(mask, pxad_filter_fn,
> > -						 &params, &pdev->dev, "CI_U");
> > +	pcdev->dma_chans[1] = dma_request_slave_channel(&pdev->dev, "CI_U");
> >  	if (!pcdev->dma_chans[1]) {
> >  		dev_err(&pdev->dev, "Can't request DMA for Y\n");
> >  		err = -ENODEV;
> >  		goto exit_free_dma_y;
> >  	}
> >  
> > -	params.drcmr = 70;
> > -	pcdev->dma_chans[2] =
> > -		dma_request_slave_channel_compat(mask, pxad_filter_fn,
> > -						 &params, &pdev->dev, "CI_V");
> > +	pcdev->dma_chans[2] = dma_request_slave_channel(&pdev->dev, "CI_V");
> >  	if (!pcdev->dma_chans[2]) {
> >  		dev_err(&pdev->dev, "Can't request DMA for V\n");
> >  		err = -ENODEV;
> >   
> 



Thanks,
Mauro