linux-kernel - Re: [PATCH v2 03/12] drm/sun4i: sun6i_mipi

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Date:   Tue, 20 Nov 2018 16:45:32 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Jagan Teki <jagan@...rulasolutions.com>
Cc:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...ux.ie>,
        Rob Herring <robh+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Icenowy Zheng <icenowy@...c.io>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Vasily Khoruzhick <anarsoul@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Michael Trimarchi <michael@...rulasolutions.com>,
        TL Lim <tllim@...e64.org>, linux-sunxi@...glegroups.com,
        linux-amarula@...rulasolutions.com
Subject: Re: [PATCH v2 03/12] drm/sun4i: sun6i_mipi_dsi: Setup burst mode
 timings

On Mon, Nov 19, 2018 at 04:30:37PM +0530, Jagan Teki wrote:
> On Mon, Nov 19, 2018 at 2:00 PM Maxime Ripard <maxime.ripard@...tlin.com> wrote:
> >
> > On Fri, Nov 16, 2018 at 10:09:07PM +0530, Jagan Teki wrote:
> > > Burst mode display timings are different from convectional
> > > video mode so update the horizontal and vertical timings.
> > >
> > > Reference code taken from BSP (from linux-sunxi/
> > > drivers/video/sunxi/disp2/disp/de/lowlevel_sun50iw1/de_dsi.c)
> > >
> > > dsi_hsa  = 0;
> > > dsi_hbp  = 0;
> > > dsi_hact = x*dsi_pixel_bits[format]/8;
> > > dsi_hblk = dsi_hact;
> > > dsi_hfp  = 0;
> > > dsi_vblk = 0;
> > >
> > > Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
> >
> > How is that matching the code you have in the rest of your patch?
> 
> +       if (device->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
> +               timings.hblk = (mode->hdisplay * Bpp);
> +       else
> +               sun6i_dsi_get_timings(dsi, mode, &timings);
> 
> It's again your request to "keep the couple of function to make more
> readable"

That function in particular doesn't make it much more readable, but
more importantly, your commit log doesn't match what you code does.

Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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