From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
In the future framebuffer stride alignment requirements won't exactly
match the units in which skl+ plane stride is specified. So extract
the code for the skl+ stuff into a separate helper.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 28 +++++++++++++++++-----------
1 file changed, 17 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index a3ae24e03316..1fe5cf3ed062 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3528,6 +3528,21 @@ static void skl_detach_scalers(struct intel_crtc *intel_crtc)
}
}
+static unsigned int skl_plane_stride_mult(const struct drm_framebuffer *fb,
+ int color_plane, unsigned int rotation)
+{
+ /*
+ * The stride is either expressed as a multiple of 64 bytes chunks for
+ * linear buffers or in number of tiles for tiled buffers.
+ */
+ if (fb->modifier == DRM_FORMAT_MOD_LINEAR)
+ return 64;
+ else if (drm_rotation_90_or_270(rotation))
+ return intel_tile_height(fb, color_plane);
+ else
+ return intel_tile_width_bytes(fb, color_plane);
+}
+
u32 skl_plane_stride(const struct intel_plane_state *plane_state,
int color_plane)
{
@@ -3538,16 +3553,7 @@ u32 skl_plane_stride(const struct intel_plane_state *plane_state,
if (color_plane >= fb->format->num_planes)
return 0;
- /*
- * The stride is either expressed as a multiple of 64 bytes chunks for
- * linear buffers or in number of tiles for tiled buffers.
- */
- if (drm_rotation_90_or_270(rotation))
- stride /= intel_tile_height(fb, color_plane);
- else
- stride /= intel_fb_stride_alignment(fb, color_plane);
-
- return stride;
+ return stride / skl_plane_stride_mult(fb, color_plane, rotation);
}
static u32 skl_plane_ctl_format(uint32_t pixel_format)
@@ -8897,7 +8903,7 @@ skylake_get_initial_plane_config(struct intel_crtc *crtc,
fb->width = ((val >> 0) & 0x1fff) + 1;
val = I915_READ(PLANE_STRIDE(pipe, plane_id));
- stride_mult = intel_fb_stride_alignment(fb, 0);
+ stride_mult = skl_plane_stride_mult(fb, 0, DRM_MODE_ROTATE_0);
fb->pitches[0] = (val & 0x3ff) * stride_mult;
aligned_height = intel_fb_align_height(fb, 0, fb->height);
--
2.16.4
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