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* [PATCH] drm/fourcc: add vivante tiled layout format modifiers
@ 2017-01-26 15:32 Philipp Zabel
  2017-01-26 17:24 ` Daniel Vetter
  0 siblings, 1 reply; 6+ messages in thread
From: Philipp Zabel @ 2017-01-26 15:32 UTC (permalink / raw)
  To: dri-devel; +Cc: Wladimir J . van der Laan, etnaviv

Vivante GC hardware uses simple 4x4 tiled and nested 64x64 supertiled
formats as well as so-called split-tiled variants for dual-pipe
hardware, where even and odd tiles start at different base addresses.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
 include/uapi/drm/drm_fourcc.h | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index a5890bf44c0af..ec0498cf61756 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -159,6 +159,7 @@ extern "C" {
 #define DRM_FORMAT_MOD_VENDOR_NV      0x03
 #define DRM_FORMAT_MOD_VENDOR_SAMSUNG 0x04
 #define DRM_FORMAT_MOD_VENDOR_QCOM    0x05
+#define DRM_FORMAT_MOD_VENDOR_VIVANTE 0x06
 /* add more to the end as needed */
 
 #define fourcc_mod_code(vendor, val) \
@@ -233,6 +234,46 @@ extern "C" {
  */
 #define DRM_FORMAT_MOD_SAMSUNG_64_32_TILE	fourcc_mod_code(SAMSUNG, 1)
 
+/* Vivante framebuffer modifiers */
+
+/*
+ * Vivante 4x4 tiling layout
+ *
+ * This is a simple tiled layout using tiles of 4x4 pixels in a row-major
+ * layout.
+ */
+#define DRM_FORMAT_MOD_VIVANTE_TILED		fourcc_mod_code(VIVANTE, 1)
+
+/*
+ * Vivante 64x64 super-tiling layout
+ *
+ * This is a tiled layout using 64x64 pixel super-tiles, where each super-tile
+ * contains 8x4 groups of 2x4 tiles of 4x4 pixels (like above) each, all in row-
+ * major layout.
+ *
+ * For more information: see
+ * https://github.com/etnaviv/etna_viv/blob/master/doc/hardware.md#texture-tiling
+ */
+#define DRM_FORMAT_MOD_VIVANTE_SUPER_TILED	fourcc_mod_code(VIVANTE, 2)
+
+/*
+ * Vivante 4x4 tiling layout for dual-pipe
+ *
+ * Same as the 4x4 tiling layout, except every second 4x4 pixel tile starts at a
+ * different base address. Offsets from the base addresses are therefore halved
+ * compared to the non-split tiled layout.
+ */
+#define DRM_FORMAT_MOD_VIVANTE_SPLIT_TILED	fourcc_mod_code(VIVANTE, 3)
+
+/*
+ * Vivante 64x64 super-tiling layout for dual-pipe
+ *
+ * Same as the 64x64 super-tiling layout, except every second 4x4 pixel tile
+ * starts at a different base address. Offsets from the base addresses are
+ * therefore halved compared to the non-split super-tiled layout.
+ */
+#define DRM_FORMAT_MOD_VIVANTE_SPLIT_SUPER_TILED fourcc_mod_code(VIVANTE, 4)
+
 #if defined(__cplusplus)
 }
 #endif
-- 
2.11.0

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^ permalink raw reply related	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2017-01-27  9:44 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-01-26 15:32 [PATCH] drm/fourcc: add vivante tiled layout format modifiers Philipp Zabel
2017-01-26 17:24 ` Daniel Vetter
2017-01-26 18:29   ` Wladimir J. van der Laan
2017-01-27  7:34     ` Daniel Vetter
2017-01-27  9:44     ` Philipp Zabel
2017-01-27  9:09   ` Lucas Stach

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