On Thu, Jan 28, 2021 at 11:24:00AM -0800, Matt Roper wrote:
From: Juha-Pekka Heikkilä <juha-pekka.heikkila@xxxxxxxxx>
Display13 supports plane strides up to 128KB.
Cc: Vandita Kulkarni <vandita.kulkarni@xxxxxxxxx>
Signed-off-by: Juha-Pekka Heikkilä <juha-pekka.heikkila@xxxxxxxxx>
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_display.c | 6 ++++-
drivers/gpu/drm/i915/display/intel_sprite.c | 24 ++++++++++++++++++--
drivers/gpu/drm/i915/i915_reg.h | 2 ++
3 files changed, 29 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index d013b0fab128..f56237aaa7b5 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -8396,7 +8396,11 @@ skl_get_initial_plane_config(struct intel_crtc *crtc,
val = intel_de_read(dev_priv, PLANE_STRIDE(pipe, plane_id));
stride_mult = skl_plane_stride_mult(fb, 0, DRM_MODE_ROTATE_0);
- fb->pitches[0] = (val & 0x3ff) * stride_mult;
+
+ if (HAS_DISPLAY13(dev_priv))
+ fb->pitches[0] = (val & PLANE_STRIDE_MASK_D13) * stride_mult;
+ else
+ fb->pitches[0] = (val & PLANE_STRIDE_MASK) * stride_mult;
aligned_height = intel_fb_align_height(fb, 0, fb->height);
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index 81bb5eb1cd15..c858ba6dc026 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -572,17 +572,37 @@ skl_plane_max_stride(struct intel_plane *plane,
u32 pixel_format, u64 modifier,
unsigned int rotation)
{
+ struct drm_i915_private *i915 = to_i915(plane->base.dev);
const struct drm_format_info *info = drm_format_info(pixel_format);
int cpp = info->cpp[0];
+ int max_horizontal_pixels = 8192;
+ int max_stride_bytes;
+
+ if (HAS_DISPLAY13(i915)) {
+ /*
+ * The stride in bytes must not exceed of the size
+ * of 128K bytes. For pixel formats of 64bpp will allow
+ * for a 16K pixel surface.
+ */
+ max_stride_bytes = 131072;
+ if (cpp == 8)
+ max_horizontal_pixels = 16384;
missing here:
else
max_horizontal_pixels = 65536;
Also, we are starting to overcomplicate skl_plane_max_stride().
Time to start setting plane->max_stride based on the platform?
Although this could be done after landing this patch. With the fix
above:
Reviewed-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Lucas De Marchi
+ } else {
+ /*
+ * "The stride in bytes must not exceed the
+ * of the size of 8K pixels and 32K bytes."
+ */
+ max_stride_bytes = 32768;
+ }
/*
* "The stride in bytes must not exceed the
* of the size of 8K pixels and 32K bytes."
*/
if (drm_rotation_90_or_270(rotation))
- return min(8192, 32768 / cpp);
+ return min(max_horizontal_pixels, max_stride_bytes / cpp);
else
- return min(8192 * cpp, 32768);
+ return min(max_horizontal_pixels * cpp, max_stride_bytes);
}
static void
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index a57593f7d7b1..9dfa4d711d6f 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7198,6 +7198,8 @@ enum {
_PIPE(pipe, _PLANE_STRIDE_3_A, _PLANE_STRIDE_3_B)
#define PLANE_STRIDE(pipe, plane) \
_MMIO_PLANE(plane, _PLANE_STRIDE_1(pipe), _PLANE_STRIDE_2(pipe))
+#define PLANE_STRIDE_MASK REG_GENMASK(10, 0)
+#define PLANE_STRIDE_MASK_D13 REG_GENMASK(11, 0)
#define _PLANE_POS_1_B 0x7118c
#define _PLANE_POS_2_B 0x7128c
--
2.25.4
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