On Mon, Sep 14, 2015 at 09:35:42PM +0530, Sagar Arun Kamble wrote:
> Shared frontbuffer bits are causing warnings when same FB is displayed
> in another plane without clearing the bits from previous plane.
>
> v2: Removing coversion of fb bits to 64 bit as it is not needed for now. (Daniel)
>
> Change-Id: Ic2df80747f314b82afd22f8326297c57d1e652c6
> Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
> Signed-off-by: Kumar, Mahesh <mahesh1.kumar@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_drv.h | 17 ++++++++++-------
> drivers/gpu/drm/i915/intel_sprite.c | 2 +-
> 2 files changed, 11 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 16e604e..892aa78 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -2014,25 +2014,28 @@ struct drm_i915_gem_object_ops {
>
> /*
> * Frontbuffer tracking bits. Set in obj->frontbuffer_bits while a gem bo is
> - * considered to be the frontbuffer for the given plane interface-vise. This
> + * considered to be the frontbuffer for the given plane interface-wise. This
> * doesn't mean that the hw necessarily already scans it out, but that any
> * rendering (by the cpu or gpu) will land in the frontbuffer eventually.
> *
> * We have one bit per pipe and per scanout plane type.
> */
> -#define INTEL_FRONTBUFFER_BITS_PER_PIPE 4
> +#define INTEL_MAX_SPRITE_BITS_PER_PIPE 5
> +#define INTEL_FRONTBUFFER_BITS_PER_PIPE 8
> #define INTEL_FRONTBUFFER_BITS \
> (INTEL_FRONTBUFFER_BITS_PER_PIPE * I915_MAX_PIPES)
> #define INTEL_FRONTBUFFER_PRIMARY(pipe) \
> (1 << (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
> #define INTEL_FRONTBUFFER_CURSOR(pipe) \
> - (1 << (1 +(INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
> -#define INTEL_FRONTBUFFER_SPRITE(pipe) \
> - (1 << (2 +(INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
> + (1 << (1 + (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
> +#define INTEL_FRONTBUFFER_SPRITE(pipe, plane) \
> + (1 << (2 + plane + (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
> #define INTEL_FRONTBUFFER_OVERLAY(pipe) \
> - (1 << (3 +(INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
> + (1 << (2 + INTEL_MAX_SPRITE_BITS_PER_PIPE + (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe))))
> #define INTEL_FRONTBUFFER_ALL_MASK(pipe) \
> - (0xf << (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
> + (0xff << (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
> +#define INTEL_FRONTBUFFER_SPRITE_MASK(pipe) \
> + (0x7C << (INTEL_FRONTBUFFER_BITS_PER_PIPE * (pipe)))
Patch was a bit confusing to read since tons of spurious whitespace
change. Anyway looks good once applied except for
INTEL_FRONTBUFFER_SPRITE_MASK which is unused and hence I removed it
again.
Queued for -next, thanks for the patch.
-Daniel
>
> struct drm_i915_gem_object {
> struct drm_gem_object base;
> diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
> index 9553859..4d27243 100644
> --- a/drivers/gpu/drm/i915/intel_sprite.c
> +++ b/drivers/gpu/drm/i915/intel_sprite.c
> @@ -1123,7 +1123,7 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
>
> intel_plane->pipe = pipe;
> intel_plane->plane = plane;
> - intel_plane->frontbuffer_bit = INTEL_FRONTBUFFER_SPRITE(pipe);
> + intel_plane->frontbuffer_bit = INTEL_FRONTBUFFER_SPRITE(pipe, plane);
> intel_plane->check_plane = intel_check_sprite_plane;
> intel_plane->commit_plane = intel_commit_sprite_plane;
> possible_crtcs = (1 << pipe);
> --
> 1.9.1
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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