On 10/7/2015 3:31 PM, Tvrtko Ursulin wrote:
From: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Previously rotation was ignored and wrong stride programmed
into the plane registers resulting in a corrupt image on screen.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Cc: Sonika Jindal <sonika.jin...@intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 539c3737e823..6328788193e4 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11126,9 +11126,10 @@ static void skl_do_mmio_flip(struct intel_crtc
*intel_crtc)
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_plane *plane = intel_crtc->base.primary;
struct drm_framebuffer *fb = intel_crtc->base.primary->fb;
const enum pipe pipe = intel_crtc->pipe;
- u32 ctl, stride;
+ u32 ctl, stride, tile_height;
ctl = I915_READ(PLANE_CTL(pipe, 0));
ctl &= ~PLANE_CTL_TILED_MASK;
@@ -11152,9 +11153,16 @@ static void skl_do_mmio_flip(struct intel_crtc
*intel_crtc)
* The stride is either expressed as a multiple of 64 bytes chunks for
* linear buffers or in number of tiles for tiled buffers.
*/
- stride = fb->pitches[0] /
- intel_fb_stride_alignment(dev, fb->modifier[0],
- fb->pixel_format);
+ if (intel_rotation_90_or_270(plane->state->rotation)) {
+ /* stride = Surface height in tiles */
+ tile_height = intel_tile_height(dev, fb->pixel_format,
+ fb->modifier[0], 0);
+ stride = DIV_ROUND_UP(fb->height, tile_height);
Wouldn't we need a PLANE_SIZE update somewhere in case of 90/270? For
the cases where the plane is not square and can fit after rotation as well?
+ } else {
+ stride = fb->pitches[0] /
+ intel_fb_stride_alignment(dev, fb->modifier[0],
+ fb->pixel_format);
+ }
/*
* Both PLANE_CTL and PLANE_STRIDE are not updated on vblank but on
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