* [PATCH] drm/i915/sdvo: Use &intel_sdvo->ddc instead of intel_sdvo->i2c for DDC.
@ 2013-06-04 15:13 Egbert Eich
2013-06-04 15:35 ` Chris Wilson
0 siblings, 1 reply; 3+ messages in thread
From: Egbert Eich @ 2013-06-04 15:13 UTC (permalink / raw)
To: intel-gfx; +Cc: Egbert Eich, Daniel Vetter, Chris Wilson, Rodrigo Vivi
In intel_sdvo_get_lvds_modes() the wrong i2c adapter record is used
for DDC. Thus the code will always have to rely on a LVDS panel
mode supplied by VBT.
In most cases this succeeds, so this didn't get detected for quite
a while.
Signed-off-by: Egbert Eich <eich@suse.de>
---
drivers/gpu/drm/i915/intel_sdvo.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 7068195..8618b15 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1848,7 +1848,7 @@ static void intel_sdvo_get_lvds_modes(struct drm_connector *connector)
* Assume that the preferred modes are
* arranged in priority order.
*/
- intel_ddc_get_modes(connector, intel_sdvo->i2c);
+ intel_ddc_get_modes(connector, &intel_sdvo->ddc);
if (list_empty(&connector->probed_modes) == false)
goto end;
--
1.8.1.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] drm/i915/sdvo: Use &intel_sdvo->ddc instead of intel_sdvo->i2c for DDC.
2013-06-04 15:13 [PATCH] drm/i915/sdvo: Use &intel_sdvo->ddc instead of intel_sdvo->i2c for DDC Egbert Eich
@ 2013-06-04 15:35 ` Chris Wilson
2013-06-04 15:48 ` Daniel Vetter
0 siblings, 1 reply; 3+ messages in thread
From: Chris Wilson @ 2013-06-04 15:35 UTC (permalink / raw)
To: Egbert Eich; +Cc: Daniel Vetter, intel-gfx, Chris Wilson, Rodrigo Vivi
On Tue, Jun 04, 2013 at 05:13:21PM +0200, Egbert Eich wrote:
> In intel_sdvo_get_lvds_modes() the wrong i2c adapter record is used
> for DDC. Thus the code will always have to rely on a LVDS panel
> mode supplied by VBT.
> In most cases this succeeds, so this didn't get detected for quite
> a while.
>
> Signed-off-by: Egbert Eich <eich@suse.de>
Good catch!
Cc: stable@vger.kernel.org
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] drm/i915/sdvo: Use &intel_sdvo->ddc instead of intel_sdvo->i2c for DDC.
2013-06-04 15:35 ` Chris Wilson
@ 2013-06-04 15:48 ` Daniel Vetter
0 siblings, 0 replies; 3+ messages in thread
From: Daniel Vetter @ 2013-06-04 15:48 UTC (permalink / raw)
To: Chris Wilson
Cc: Egbert Eich, Daniel Vetter, intel-gfx, Chris Wilson, Rodrigo Vivi
On Tue, Jun 04, 2013 at 04:35:32PM +0100, Chris Wilson wrote:
> On Tue, Jun 04, 2013 at 05:13:21PM +0200, Egbert Eich wrote:
> > In intel_sdvo_get_lvds_modes() the wrong i2c adapter record is used
> > for DDC. Thus the code will always have to rely on a LVDS panel
> > mode supplied by VBT.
> > In most cases this succeeds, so this didn't get detected for quite
> > a while.
> >
> > Signed-off-by: Egbert Eich <eich@suse.de>
>
> Good catch!
> Cc: stable@vger.kernel.org
> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Yeah, nice catch. If my history digging is correct this has been broken in
commit f899fc64cda8569d0529452aafc0da31c042df2e
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue Jul 20 15:44:45 2010 -0700
drm/i915: use GMBUS to manage i2c links
Patch merged with that note added, thanks.
-Daniel
> -Chris
>
> --
> Chris Wilson, Intel Open Source Technology Centre
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-06-04 15:13 [PATCH] drm/i915/sdvo: Use &intel_sdvo->ddc instead of intel_sdvo->i2c for DDC Egbert Eich
2013-06-04 15:35 ` Chris Wilson
2013-06-04 15:48 ` Daniel Vetter
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