linux-kernel - Re: [PATCHv2] omap3isp: add support for CSI1 bus

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Message-ID: <20170304225328.GD31766@amd>
Date:   Sat, 4 Mar 2017 23:53:28 +0100
From:   Pavel Machek <pavel@....cz>
To:     Sakari Ailus <sakari.ailus@....fi>
Cc:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        mchehab@...nel.org, kernel list <linux-kernel@...r.kernel.org>,
        ivo.g.dimitrov.75@...il.com, sre@...nel.org, pali.rohar@...il.com,
        linux-media@...r.kernel.org
Subject: Re: [PATCHv2] omap3isp: add support for CSI1 bus

Hi!

> > > > +	if (isp->phy_type == ISP_PHY_TYPE_3430) {
> > > > +		struct media_pad *pad;
> > > > +		struct v4l2_subdev *sensor;
> > > > +		const struct isp_ccp2_cfg *buscfg;
> > > > +
> > > > +		pad = media_entity_remote_pad(&ccp2->pads[CCP2_PAD_SINK]);
> > > > +		sensor = media_entity_to_v4l2_subdev(pad->entity);
> > > > +		/* Struct isp_bus_cfg has union inside */
> > > > +		buscfg = &((struct isp_bus_cfg *)sensor->host_priv)->bus.ccp2;
> > > > +
> > > > +		csiphy_routing_cfg_3430(&isp->isp_csiphy2,
> > > > +					ISP_INTERFACE_CCP2B_PHY1,
> > > > +					enable, !!buscfg->phy_layer,
> > > > +					buscfg->strobe_clk_pol);
> > > 
> > > You should do this through omap3isp_csiphy_acquire(), and not call
> > > csiphy_routing_cfg_3430() directly from here.
> > 
> > Well, unfortunately omap3isp_csiphy_acquire() does have csi2
> > assumptions hard-coded :-(.
> > 
> > This will probably fail.
> > 
> > 	        rval = omap3isp_csi2_reset(phy->csi2);
> > 	        if (rval < 0)
> > 		                goto done;
> 
> Could you try to two patches I've applied on the ccp2 branch (I'll remove
> them if there are issues).
> 
> That's compile tested for now only.

Thanks! They seem to be step in right direction. I still need to call
csiphy_routing_cfg_3430() directly for camera to work, but at least it
does not crash if I set up the phy pointer. I'll debug it some more.

Best regards,

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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