From: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
To: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH 11/12] drm/i915: WARN if a port should use VBT provided vswing tables
Date: Thu, 1 Sep 2022 12:24:45 +0300 [thread overview]
Message-ID: <YxB6Xa+KUwoWCZf8@intel.com> (raw)
In-Reply-To: <YtaH70TQd+nz0ydA@intel.com>
On Tue, Jul 19, 2022 at 06:31:11AM -0400, Rodrigo Vivi wrote:
> On Fri, Jul 15, 2022 at 11:20:43PM +0300, Ville Syrjala wrote:
> > From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> >
> > We don't parse the VBT vswing/preemphassis tables at all currently.
> > Let's WARN if a port wants to use them so we get a heads up that
> > whether we really need to implement this stuff or not. My
> > current stash contains no VBTs with this bit set.
>
> let's unlock a new can of worms?! :)
>
> I believe this deserves a /* XXX: comment with the code in case
> someone else finds this warns first and doesn't use the git blame
Sure I'll stick some kind of comment there.
>
> anyways
> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
>
> >
> > Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> > ---
> > drivers/gpu/drm/i915/display/intel_bios.c | 4 ++++
> > 1 file changed, 4 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
> > index 51dde5bfd956..cd86b65055ef 100644
> > --- a/drivers/gpu/drm/i915/display/intel_bios.c
> > +++ b/drivers/gpu/drm/i915/display/intel_bios.c
> > @@ -2661,6 +2661,10 @@ static void parse_ddi_port(struct intel_bios_encoder_data *devdata)
> > return;
> > }
> >
> > + drm_WARN(&i915->drm, child->use_vbt_vswing,
> > + "Port %c asks to use VBT vswing/preemph tables\n",
> > + port_name(port));
> > +
> > if (i915->vbt.ports[port]) {
> > drm_dbg_kms(&i915->drm,
> > "More than one child device for port %c in VBT, using the first.\n",
> > --
> > 2.35.1
> >
--
Ville Syrjälä
Intel
next prev parent reply other threads:[~2022-09-01 9:24 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-15 20:20 [Intel-gfx] [PATCH 00/12] drm/i915: More VBT stuff Ville Syrjala
2022-07-15 20:20 ` [Intel-gfx] [PATCH 01/12] drm/i915: Unify VBT version number comments Ville Syrjala
2022-07-19 10:25 ` Rodrigo Vivi
2022-09-01 9:24 ` Ville Syrjälä
2022-07-15 20:20 ` [Intel-gfx] [PATCH 02/12] drm/i915: Add some more " Ville Syrjala
2022-09-02 15:00 ` Jani Nikula
2022-07-15 20:20 ` [Intel-gfx] [PATCH 03/12] drm/i915: Properly define the DP redriver VBT bits Ville Syrjala
2022-09-02 14:45 ` Jani Nikula
2022-07-15 20:20 ` [Intel-gfx] [PATCH 04/12] drm/i915: Define VBT eDP/DP max lane count bits Ville Syrjala
2022-09-02 14:36 ` Jani Nikula
2022-07-15 20:20 ` [Intel-gfx] [PATCH 05/12] drm/i915: Add the VBT LTTPR transparent vs. non-transparent bits Ville Syrjala
2022-09-02 14:47 ` Jani Nikula
2022-07-15 20:20 ` [Intel-gfx] [PATCH 06/12] drm/i915: Define VBT max HDMI FRL rate bits Ville Syrjala
2022-09-02 14:48 ` Jani Nikula
2022-07-15 20:20 ` [Intel-gfx] [PATCH 07/12] drm/i915: Document the sets of bits in the driver features block Ville Syrjala
2022-09-02 14:05 ` Jani Nikula
2022-07-15 20:20 ` [Intel-gfx] [PATCH 08/12] drm/i915: Define more VBT driver features block bits Ville Syrjala
2022-09-02 14:09 ` Jani Nikula
2022-07-15 20:20 ` [Intel-gfx] [PATCH 09/12] drm/i915: Define all possible VBT device handles Ville Syrjala
2022-09-02 14:13 ` Jani Nikula
2022-07-15 20:20 ` [Intel-gfx] [PATCH 10/12] drm/i915: Rename some VBT bits Ville Syrjala
2022-09-02 14:15 ` Jani Nikula
2022-07-15 20:20 ` [Intel-gfx] [PATCH 11/12] drm/i915: WARN if a port should use VBT provided vswing tables Ville Syrjala
2022-07-19 10:31 ` Rodrigo Vivi
2022-09-01 9:24 ` Ville Syrjälä [this message]
2022-09-02 14:01 ` Jani Nikula
2022-07-15 20:20 ` [Intel-gfx] [PATCH 12/12] drm/i915: Parse DP/eDP max lane count from VBT Ville Syrjala
2022-07-19 10:39 ` Rodrigo Vivi
2022-09-01 9:25 ` Ville Syrjälä
2022-09-02 14:42 ` Jani Nikula
2022-07-16 18:13 ` [Intel-gfx] ✓ Fi.CI.BAT: success for drm/i915: More VBT stuff Patchwork
2022-07-16 21:50 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
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