* [RFC] drm/i915: Add gen check for fb size
@ 2015-07-10 11:15 Vandana Kannan
2015-07-13 9:26 ` Daniel Vetter
0 siblings, 1 reply; 2+ messages in thread
From: Vandana Kannan @ 2015-07-10 11:15 UTC (permalink / raw)
To: intel-gfx
From gen7, the platform can support fb of size < 3x3.
Adding this check for gen along with fb width & height.
Note: IVB is gen7 but its not clear if it can support width < 3 and
height < 3.
This patch has been tested in Android environment.
Signed-off-by: Vandana Kannan <vandana.kannan@intel.com>
---
drivers/gpu/drm/i915/intel_sprite.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index cd21525..310d0a7 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -770,8 +770,13 @@ intel_check_sprite_plane(struct drm_plane *plane,
return -EINVAL;
}
+ if (INTEL_INFO(dev)->gen < 7 && (fb->width < 3 || fb->height < 3)) {
+ DRM_DEBUG_KMS("Unsuitable framebuffer for plane\n");
+ return -EINVAL;
+ }
+
/* FIXME check all gen limits */
- if (fb->width < 3 || fb->height < 3 || fb->pitches[0] > 16384) {
+ if (fb->pitches[0] > 16384) {
DRM_DEBUG_KMS("Unsuitable framebuffer for plane\n");
return -EINVAL;
}
--
2.0.1
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [RFC] drm/i915: Add gen check for fb size
2015-07-10 11:15 [RFC] drm/i915: Add gen check for fb size Vandana Kannan
@ 2015-07-13 9:26 ` Daniel Vetter
0 siblings, 0 replies; 2+ messages in thread
From: Daniel Vetter @ 2015-07-13 9:26 UTC (permalink / raw)
To: Vandana Kannan; +Cc: intel-gfx
On Fri, Jul 10, 2015 at 04:45:12PM +0530, Vandana Kannan wrote:
> From gen7, the platform can support fb of size < 3x3.
> Adding this check for gen along with fb width & height.
> Note: IVB is gen7 but its not clear if it can support width < 3 and
> height < 3.
>
> This patch has been tested in Android environment.
>
> Signed-off-by: Vandana Kannan <vandana.kannan@intel.com>
What exactly are you usinga 3x3 framebuffer for? Imo this needs userspace
plus igt testcases and all that, but really not sure why this would be
worth it ever.
-Daniel
> ---
> drivers/gpu/drm/i915/intel_sprite.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
> index cd21525..310d0a7 100644
> --- a/drivers/gpu/drm/i915/intel_sprite.c
> +++ b/drivers/gpu/drm/i915/intel_sprite.c
> @@ -770,8 +770,13 @@ intel_check_sprite_plane(struct drm_plane *plane,
> return -EINVAL;
> }
>
> + if (INTEL_INFO(dev)->gen < 7 && (fb->width < 3 || fb->height < 3)) {
> + DRM_DEBUG_KMS("Unsuitable framebuffer for plane\n");
> + return -EINVAL;
> + }
> +
> /* FIXME check all gen limits */
> - if (fb->width < 3 || fb->height < 3 || fb->pitches[0] > 16384) {
> + if (fb->pitches[0] > 16384) {
> DRM_DEBUG_KMS("Unsuitable framebuffer for plane\n");
> return -EINVAL;
> }
> --
> 2.0.1
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 2+ messages in thread
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