[PATCH] drm/i915: Interlaced DP output doesn't work on VLV/CHV

[PATCH] drm/i915: Interlaced DP output doesn't work on VLV/CHV

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Reject interlaced modes on VLV/CHV DP outputs. This simply does
not work correctly in the hardware. We do get some output, but
it's quite corrupted.

The available documentation fails to mention this fact. I
contacted some hardware people who eventually managed to locate
the relevant HSD for VLV, which was resolved by declaring
interlaced DP output as not supported. The HSD was never cloned
for CHV even though it inherited most of the hardware and
thus has the same problems with interlaced DP output.

Cc: Dennis Vshivkov <awesome.walrus+bugzilla@gmail.com>
Reported-by: Dennis Vshivkov <awesome.walrus+bugzilla@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103922
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 957735c0b4c6..61cde5cd04d3 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1677,6 +1677,10 @@ intel_dp_compute_config(struct intel_encoder *encoder,
 						conn_state->scaling_mode);
 	}
 
+	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+	    adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
+		return false;
+
 	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
 		return false;
 
@@ -6083,7 +6087,8 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
 	drm_connector_init(dev, connector, &intel_dp_connector_funcs, type);
 	drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs);
 
-	connector->interlace_allowed = true;
+	if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
+		connector->interlace_allowed = true;
 	connector->doublescan_allowed = 0;
 
 	intel_dp_init_connector_port_info(intel_dig_port);
-- 
2.13.6

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Re: [PATCH] drm/i915: Interlaced DP output doesn't work on VLV/CHV

[Rodrigo Vivi]

On Wed, Nov 29, 2017 at 06:08:47PM +0000, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 
> Reject interlaced modes on VLV/CHV DP outputs. This simply does
> not work correctly in the hardware. We do get some output, but
> it's quite corrupted.
> 
> The available documentation fails to mention this fact. I
> contacted some hardware people who eventually managed to locate
> the relevant HSD for VLV, which was resolved by declaring
> interlaced DP output as not supported. The HSD was never cloned
> for CHV even though it inherited most of the hardware and
> thus has the same problems with interlaced DP output.
> 
> Cc: Dennis Vshivkov <awesome.walrus+bugzilla@gmail.com>
> Reported-by: Dennis Vshivkov <awesome.walrus+bugzilla@gmail.com>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103922
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

I'm afraid we won't be able to track that down...
I took a quick look on wa_database for vlv/chv to see if
something seemed related, but nothing ring a bell...

So, let's live without these modes.

Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>


> ---
>  drivers/gpu/drm/i915/intel_dp.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 957735c0b4c6..61cde5cd04d3 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -1677,6 +1677,10 @@ intel_dp_compute_config(struct intel_encoder *encoder,
>  						conn_state->scaling_mode);
>  	}
>  
> +	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
> +	    adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
> +		return false;
> +
>  	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
>  		return false;
>  
> @@ -6083,7 +6087,8 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
>  	drm_connector_init(dev, connector, &intel_dp_connector_funcs, type);
>  	drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs);
>  
> -	connector->interlace_allowed = true;
> +	if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
> +		connector->interlace_allowed = true;
>  	connector->doublescan_allowed = 0;
>  
>  	intel_dp_init_connector_port_info(intel_dig_port);
> -- 
> 2.13.6
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
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✗ Fi.CI.BAT: failure for drm/i915: Interlaced DP output doesn't work on VLV/CHV

[Patchwork]

== Series Details ==

Series: drm/i915: Interlaced DP output doesn't work on VLV/CHV
URL   : https://patchwork.freedesktop.org/series/34647/
State : failure

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✓ Fi.CI.BAT: success for drm/i915: Interlaced DP output doesn't work on VLV/CHV

[Patchwork]

== Series Details ==

Series: drm/i915: Interlaced DP output doesn't work on VLV/CHV
URL   : https://patchwork.freedesktop.org/series/34647/
State : success

== Summary ==

Series 34647v1 drm/i915: Interlaced DP output doesn't work on VLV/CHV
https://patchwork.freedesktop.org/api/1.0/series/34647/revisions/1/mbox/

Test debugfs_test:
        Subgroup read_all_entries:
                dmesg-warn -> DMESG-FAIL (fi-elk-e7500) fdo#103989
                dmesg-warn -> PASS       (fi-bdw-gvtdvm) fdo#103938 +1
Test gem_exec_reloc:
        Subgroup basic-write-gtt-active:
                fail       -> PASS       (fi-gdg-551) fdo#102582 +1
Test gem_mmap_gtt:
        Subgroup basic-small-bo-tiledx:
                fail       -> PASS       (fi-gdg-551) fdo#102575

fdo#103989 https://bugs.freedesktop.org/show_bug.cgi?id=103989
fdo#103938 https://bugs.freedesktop.org/show_bug.cgi?id=103938
fdo#102582 https://bugs.freedesktop.org/show_bug.cgi?id=102582
fdo#102575 https://bugs.freedesktop.org/show_bug.cgi?id=102575

fi-bdw-5557u     total:288  pass:267  dwarn:0   dfail:0   fail:0   skip:21  time:441s
fi-bdw-gvtdvm    total:288  pass:264  dwarn:0   dfail:0   fail:0   skip:24  time:451s
fi-blb-e6850     total:288  pass:223  dwarn:1   dfail:0   fail:0   skip:64  time:387s
fi-bsw-n3050     total:288  pass:242  dwarn:0   dfail:0   fail:0   skip:46  time:517s
fi-bwr-2160      total:288  pass:183  dwarn:0   dfail:0   fail:0   skip:105 time:286s
fi-bxt-dsi       total:288  pass:258  dwarn:0   dfail:0   fail:0   skip:30  time:502s
fi-bxt-j4205     total:288  pass:259  dwarn:0   dfail:0   fail:0   skip:29  time:508s
fi-byt-j1900     total:288  pass:253  dwarn:0   dfail:0   fail:0   skip:35  time:486s
fi-byt-n2820     total:288  pass:249  dwarn:0   dfail:0   fail:0   skip:39  time:471s
fi-elk-e7500     total:224  pass:162  dwarn:15  dfail:1   fail:0   skip:45 
fi-gdg-551       total:288  pass:179  dwarn:1   dfail:0   fail:0   skip:108 time:268s
fi-glk-1         total:288  pass:260  dwarn:0   dfail:0   fail:0   skip:28  time:540s
fi-hsw-4770      total:288  pass:261  dwarn:0   dfail:0   fail:0   skip:27  time:389s
fi-hsw-4770r     total:288  pass:224  dwarn:0   dfail:0   fail:0   skip:64  time:267s
fi-ilk-650       total:288  pass:228  dwarn:0   dfail:0   fail:0   skip:60  time:391s
fi-ivb-3520m     total:288  pass:259  dwarn:0   dfail:0   fail:0   skip:29  time:482s
fi-ivb-3770      total:288  pass:259  dwarn:0   dfail:0   fail:0   skip:29  time:446s
fi-kbl-7500u     total:288  pass:263  dwarn:1   dfail:0   fail:0   skip:24  time:489s
fi-kbl-7560u     total:288  pass:269  dwarn:0   dfail:0   fail:0   skip:19  time:525s
fi-kbl-7567u     total:288  pass:268  dwarn:0   dfail:0   fail:0   skip:20  time:476s
fi-kbl-r         total:288  pass:261  dwarn:0   dfail:0   fail:0   skip:27  time:534s
fi-skl-6260u     total:288  pass:268  dwarn:0   dfail:0   fail:0   skip:20  time:446s
fi-skl-6600u     total:288  pass:261  dwarn:0   dfail:0   fail:0   skip:27  time:541s
fi-skl-6700hq    total:288  pass:262  dwarn:0   dfail:0   fail:0   skip:26  time:566s
fi-skl-6700k     total:288  pass:264  dwarn:0   dfail:0   fail:0   skip:24  time:516s
fi-skl-6770hq    total:288  pass:268  dwarn:0   dfail:0   fail:0   skip:20  time:504s
fi-skl-gvtdvm    total:288  pass:265  dwarn:0   dfail:0   fail:0   skip:23  time:447s
fi-snb-2520m     total:288  pass:249  dwarn:0   dfail:0   fail:0   skip:39  time:547s
fi-snb-2600      total:288  pass:248  dwarn:0   dfail:0   fail:0   skip:40  time:415s
Blacklisted hosts:
fi-cfl-s2        total:288  pass:262  dwarn:0   dfail:0   fail:0   skip:26  time:613s
fi-glk-dsi       total:288  pass:258  dwarn:0   dfail:0   fail:0   skip:30  time:491s
fi-pnv-d510 failed to collect. IGT log at Patchwork_7363/fi-pnv-d510/igt.log

a19f73d6fe96a9aaa7f71d25bbe9f897dc5e9ee1 drm-tip: 2017y-11m-30d-08h-12m-27s UTC integration manifest
946cf52ecb6d drm/i915: Interlaced DP output doesn't work on VLV/CHV

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_7363/
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✗ Fi.CI.IGT: failure for drm/i915: Interlaced DP output doesn't work on VLV/CHV

[Patchwork]

== Series Details ==

Series: drm/i915: Interlaced DP output doesn't work on VLV/CHV
URL   : https://patchwork.freedesktop.org/series/34647/
State : failure

== Summary ==

Test drv_module_reload:
        Subgroup basic-reload:
                pass       -> DMESG-WARN (shard-snb) fdo#102848
Test perf:
        Subgroup blocking:
                fail       -> PASS       (shard-hsw) fdo#102252
Test gem_tiled_swapping:
        Subgroup non-threaded:
                pass       -> INCOMPLETE (shard-snb)
                incomplete -> PASS       (shard-hsw) fdo#103525
Test kms_cursor_crc:
        Subgroup cursor-256x256-suspend:
                notrun     -> INCOMPLETE (shard-hsw)
Test kms_vblank:
        Subgroup accuracy-idle:
                fail       -> PASS       (shard-hsw) fdo#102583
Test kms_setmode:
        Subgroup basic:
                pass       -> FAIL       (shard-hsw) fdo#99912
Test drv_suspend:
        Subgroup forcewake-hibernate:
                fail       -> SKIP       (shard-hsw) fdo#103375
Test kms_frontbuffer_tracking:
        Subgroup fbc-1p-primscrn-pri-indfb-draw-render:
                pass       -> FAIL       (shard-snb) fdo#101623
Test gem_busy:
        Subgroup close-race:
                fail       -> PASS       (shard-snb) fdo#103829

fdo#102848 https://bugs.freedesktop.org/show_bug.cgi?id=102848
fdo#102252 https://bugs.freedesktop.org/show_bug.cgi?id=102252
fdo#103525 https://bugs.freedesktop.org/show_bug.cgi?id=103525
fdo#102583 https://bugs.freedesktop.org/show_bug.cgi?id=102583
fdo#99912 https://bugs.freedesktop.org/show_bug.cgi?id=99912
fdo#103375 https://bugs.freedesktop.org/show_bug.cgi?id=103375
fdo#101623 https://bugs.freedesktop.org/show_bug.cgi?id=101623
fdo#103829 https://bugs.freedesktop.org/show_bug.cgi?id=103829

shard-hsw        total:2628 pass:1515 dwarn:1   dfail:0   fail:10  skip:1101 time:9069s
shard-snb        total:2609 pass:1279 dwarn:2   dfail:0   fail:12  skip:1315 time:7739s
Blacklisted hosts:
shard-apl        total:2661 pass:1689 dwarn:1   dfail:0   fail:22  skip:949 time:13797s
shard-kbl        total:2661 pass:1803 dwarn:1   dfail:0   fail:25  skip:832 time:10911s

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_7363/shards.html
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✓ Fi.CI.BAT: success for drm/i915: Interlaced DP output doesn't work on VLV/CHV

[Patchwork]

== Series Details ==

Series: drm/i915: Interlaced DP output doesn't work on VLV/CHV
URL   : https://patchwork.freedesktop.org/series/34647/
State : success

== Summary ==

Series 34647v1 drm/i915: Interlaced DP output doesn't work on VLV/CHV
https://patchwork.freedesktop.org/api/1.0/series/34647/revisions/1/mbox/

Test gem_exec_reloc:
        Subgroup basic-cpu-active:
                fail       -> PASS       (fi-gdg-551) fdo#102582 +1
Test kms_pipe_crc_basic:
        Subgroup suspend-read-crc-pipe-b:
                pass       -> INCOMPLETE (fi-snb-2520m) fdo#103713

fdo#102582 https://bugs.freedesktop.org/show_bug.cgi?id=102582
fdo#103713 https://bugs.freedesktop.org/show_bug.cgi?id=103713

fi-bdw-5557u     total:288  pass:267  dwarn:0   dfail:0   fail:0   skip:21  time:439s
fi-blb-e6850     total:288  pass:223  dwarn:1   dfail:0   fail:0   skip:64  time:389s
fi-bsw-n3050     total:288  pass:242  dwarn:0   dfail:0   fail:0   skip:46  time:514s
fi-bwr-2160      total:288  pass:183  dwarn:0   dfail:0   fail:0   skip:105 time:281s
fi-bxt-dsi       total:288  pass:258  dwarn:0   dfail:0   fail:0   skip:30  time:505s
fi-bxt-j4205     total:288  pass:259  dwarn:0   dfail:0   fail:0   skip:29  time:507s
fi-byt-j1900     total:288  pass:253  dwarn:0   dfail:0   fail:0   skip:35  time:485s
fi-byt-n2820     total:288  pass:249  dwarn:0   dfail:0   fail:0   skip:39  time:467s
fi-elk-e7500     total:224  pass:162  dwarn:16  dfail:0   fail:0   skip:45 
fi-gdg-551       total:288  pass:178  dwarn:1   dfail:0   fail:1   skip:108 time:268s
fi-glk-1         total:288  pass:260  dwarn:0   dfail:0   fail:0   skip:28  time:533s
fi-hsw-4770      total:288  pass:261  dwarn:0   dfail:0   fail:0   skip:27  time:397s
fi-hsw-4770r     total:288  pass:224  dwarn:0   dfail:0   fail:0   skip:64  time:260s
fi-ilk-650       total:288  pass:228  dwarn:0   dfail:0   fail:0   skip:60  time:397s
fi-ivb-3520m     total:288  pass:259  dwarn:0   dfail:0   fail:0   skip:29  time:487s
fi-ivb-3770      total:288  pass:259  dwarn:0   dfail:0   fail:0   skip:29  time:450s
fi-kbl-7500u     total:288  pass:263  dwarn:1   dfail:0   fail:0   skip:24  time:487s
fi-kbl-7560u     total:288  pass:269  dwarn:0   dfail:0   fail:0   skip:19  time:528s
fi-kbl-7567u     total:288  pass:268  dwarn:0   dfail:0   fail:0   skip:20  time:479s
fi-kbl-r         total:288  pass:261  dwarn:0   dfail:0   fail:0   skip:27  time:532s
fi-pnv-d510      total:288  pass:222  dwarn:1   dfail:0   fail:0   skip:65  time:589s
fi-skl-6260u     total:288  pass:268  dwarn:0   dfail:0   fail:0   skip:20  time:452s
fi-skl-6600u     total:288  pass:261  dwarn:0   dfail:0   fail:0   skip:27  time:541s
fi-skl-6700hq    total:288  pass:262  dwarn:0   dfail:0   fail:0   skip:26  time:564s
fi-skl-6700k     total:288  pass:264  dwarn:0   dfail:0   fail:0   skip:24  time:509s
fi-skl-6770hq    total:288  pass:268  dwarn:0   dfail:0   fail:0   skip:20  time:500s
fi-skl-gvtdvm    total:288  pass:265  dwarn:0   dfail:0   fail:0   skip:23  time:444s
fi-snb-2520m     total:245  pass:211  dwarn:0   dfail:0   fail:0   skip:33 
fi-snb-2600      total:288  pass:248  dwarn:0   dfail:0   fail:0   skip:40  time:412s
Blacklisted hosts:
fi-cfl-s2        total:288  pass:262  dwarn:0   dfail:0   fail:0   skip:26  time:608s
fi-glk-dsi       total:288  pass:257  dwarn:0   dfail:0   fail:1   skip:30  time:498s
fi-bdw-gvtdvm failed to collect. IGT log at Patchwork_7374/fi-bdw-gvtdvm/igt.log

6d6c48b9b35806aba461d2c8285db2689de9095f drm-tip: 2017y-11m-30d-12h-22m-59s UTC integration manifest
1437cf30571e drm/i915: Interlaced DP output doesn't work on VLV/CHV

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_7374/
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Re: [PATCH] drm/i915: Interlaced DP output doesn't work on VLV/CHV

[Ville Syrjälä]

On Wed, Nov 29, 2017 at 03:07:03PM -0800, Rodrigo Vivi wrote:
> On Wed, Nov 29, 2017 at 06:08:47PM +0000, Ville Syrjala wrote:
> > From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> > 
> > Reject interlaced modes on VLV/CHV DP outputs. This simply does
> > not work correctly in the hardware. We do get some output, but
> > it's quite corrupted.
> > 
> > The available documentation fails to mention this fact. I
> > contacted some hardware people who eventually managed to locate
> > the relevant HSD for VLV, which was resolved by declaring
> > interlaced DP output as not supported. The HSD was never cloned
> > for CHV even though it inherited most of the hardware and
> > thus has the same problems with interlaced DP output.
> > 
> > Cc: Dennis Vshivkov <awesome.walrus+bugzilla@gmail.com>
> > Reported-by: Dennis Vshivkov <awesome.walrus+bugzilla@gmail.com>
> > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103922
> > Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 
> I'm afraid we won't be able to track that down...
> I took a quick look on wa_database for vlv/chv to see if
> something seemed related, but nothing ring a bell...
> 
> So, let's live without these modes.
> 
> Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Thanks. Pushed to dinq.

> 
> 
> > ---
> >  drivers/gpu/drm/i915/intel_dp.c | 7 ++++++-
> >  1 file changed, 6 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> > index 957735c0b4c6..61cde5cd04d3 100644
> > --- a/drivers/gpu/drm/i915/intel_dp.c
> > +++ b/drivers/gpu/drm/i915/intel_dp.c
> > @@ -1677,6 +1677,10 @@ intel_dp_compute_config(struct intel_encoder *encoder,
> >  						conn_state->scaling_mode);
> >  	}
> >  
> > +	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
> > +	    adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
> > +		return false;
> > +
> >  	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
> >  		return false;
> >  
> > @@ -6083,7 +6087,8 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
> >  	drm_connector_init(dev, connector, &intel_dp_connector_funcs, type);
> >  	drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs);
> >  
> > -	connector->interlace_allowed = true;
> > +	if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
> > +		connector->interlace_allowed = true;
> >  	connector->doublescan_allowed = 0;
> >  
> >  	intel_dp_init_connector_port_info(intel_dig_port);
> > -- 
> > 2.13.6
> > 
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Ville Syrjälä
Intel OTC
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