linux-kernel - Re: [PATCH V5 1/3] drm/panel: simple: Add Logic PD Type 28 display support

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Message-ID: <20191101075726.GB6209@pendragon.ideasonboard.com>
Date:   Fri, 1 Nov 2019 09:57:26 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Adam Ford <aford173@...il.com>, Sam Ravnborg <sam@...nborg.org>
Cc:     dri-devel <dri-devel@...ts.freedesktop.org>,
        Linux-OMAP <linux-omap@...r.kernel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V5 1/3] drm/panel: simple: Add Logic PD Type 28 display
 support

On Wed, Oct 30, 2019 at 09:44:20AM -0500, Adam Ford wrote:
> On Wed, Oct 16, 2019 at 8:52 AM Adam Ford <aford173@...il.com> wrote:
> >
> > Previously, there was an omap panel-dpi driver that would
> > read generic timings from the device tree and set the display
> > timing accordingly.  This driver was removed so the screen
> > no longer functions.  This patch modifies the panel-simple
> > file to setup the timings to the same values previously used.
> >
> > Fixes: 8bf4b1621178 ("drm/omap: Remove panel-dpi driver")
> 
> Will this be able to make it into linux-next for the 5.5 merge window?
> I believe Tony has picked up the device tree portion in his omap
> tree, but I haven't seen any notifications on this series on whether
> or not it's being applied.  I also don't know which tree I need to
> look if it's already been applied.
> 
> This fixes a regression introduced a while ago where the driver I was
> using for the display was removed.

Sam, would you be able to pick this up ?

> > Signed-off-by: Adam Ford <aford173@...il.com>
> > Reviewed-by: Sam Ravnborg <sam@...nborg.org>
> > ---
> > V5:  No Change
> > V4:  No Change
> > V3:  No Change
> > V2:  No Change
> >
> > diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> > index 5d487686d25c..72f69709f349 100644
> > --- a/drivers/gpu/drm/panel/panel-simple.c
> > +++ b/drivers/gpu/drm/panel/panel-simple.c
> > @@ -2061,6 +2061,40 @@ static const struct drm_display_mode mitsubishi_aa070mc01_mode = {
> >         .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
> >  };
> >
> > +static const struct drm_display_mode logicpd_type_28_mode = {
> > +       .clock = 9000,
> > +       .hdisplay = 480,
> > +       .hsync_start = 480 + 3,
> > +       .hsync_end = 480 + 3 + 42,
> > +       .htotal = 480 + 3 + 42 + 2,
> > +
> > +       .vdisplay = 272,
> > +       .vsync_start = 272 + 2,
> > +       .vsync_end = 272 + 2 + 11,
> > +       .vtotal = 272 + 2 + 11 + 3,
> > +       .vrefresh = 60,
> > +       .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
> > +};
> > +
> > +static const struct panel_desc logicpd_type_28 = {
> > +       .modes = &logicpd_type_28_mode,
> > +       .num_modes = 1,
> > +       .bpc = 8,
> > +       .size = {
> > +               .width = 105,
> > +               .height = 67,
> > +       },
> > +       .delay = {
> > +               .prepare = 200,
> > +               .enable = 200,
> > +               .unprepare = 200,
> > +               .disable = 200,
> > +       },
> > +       .bus_format = MEDIA_BUS_FMT_RGB888_1X24,
> > +       .bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE |
> > +                    DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE,
> > +};
> > +
> >  static const struct panel_desc mitsubishi_aa070mc01 = {
> >         .modes = &mitsubishi_aa070mc01_mode,
> >         .num_modes = 1,
> > @@ -3287,6 +3321,9 @@ static const struct of_device_id platform_of_match[] = {
> >         }, {
> >                 .compatible = "lg,lp129qe",
> >                 .data = &lg_lp129qe,
> > +       }, {
> > +               .compatible = "logicpd,type28",
> > +               .data = &logicpd_type_28,
> >         }, {
> >                 .compatible = "mitsubishi,aa070mc01-ca1",
> >                 .data = &mitsubishi_aa070mc01,

-- 
Regards,

Laurent Pinchart