From: Neil Armstrong <narmstrong@baylibre.com>
To: daniel@ffwll.ch, dri-devel@lists.freedesktop.org
Cc: linux-amlogic@lists.infradead.org,
Kevin Hilman <khilman@baylibre.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Neil Armstrong <narmstrong@baylibre.com>
Subject: [PATCH v5 5/8] drm/fourcc: amlogic: Add modifier definitions for Memory Saving option
Date: Thu, 16 Apr 2020 17:24:57 +0200 [thread overview]
Message-ID: <20200416152500.29429-6-narmstrong@baylibre.com> (raw)
In-Reply-To: <20200416152500.29429-1-narmstrong@baylibre.com>
Amlogic uses a proprietary lossless image compression protocol and format
for their hardware video codec accelerators, either video decoders or
video input encoders.
An option exist changing the layout superblock size to save memory when
using 8bit components pixels size.
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
include/uapi/drm/drm_fourcc.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index a1b163a5641f..664dd238574a 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -843,6 +843,21 @@ extern "C" {
*/
#define DRM_FORMAT_MOD_AMLOGIC_FBC_LAYOUT_BASIC (1ULL << 0)
+/* Amlogic FBC Layout Options */
+#define DRM_FORMAT_MOD_AMLOGIC_FBC_OPTIONS_MASK (0xf << 8)
+
+/*
+ * Amlogic FBC Memory Saving mode
+ *
+ * Indicates the storage is packed when pixel size is multiple of word
+ * boudaries, i.e. 8bit should be stored in this mode to save allocation
+ * memory.
+ *
+ * This mode reduces body layout to 3072 bytes per 64x32 superblock with
+ * the basic layout.
+ */
+#define DRM_FORMAT_MOD_AMLOGIC_FBC_MEM_SAVING (1ULL << 8)
+
#if defined(__cplusplus)
}
#endif
--
2.22.0
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next prev parent reply other threads:[~2020-04-16 15:26 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-16 15:24 [PATCH v5 0/8] drm/meson: add support for Amlogic Video FBC Neil Armstrong
2020-04-16 15:24 ` [PATCH v5 1/8] drm/fourcc: Add modifier definitions for describing Amlogic Video Framebuffer Compression Neil Armstrong
2020-04-17 15:07 ` Daniel Vetter
2020-04-17 16:05 ` Neil Armstrong
2020-04-17 16:11 ` Neil Armstrong
2020-04-17 18:14 ` Daniel Vetter
2020-04-20 10:21 ` Neil Armstrong
2020-04-21 12:16 ` Daniel Vetter
2020-04-21 13:14 ` Neil Armstrong
2020-04-16 15:24 ` [PATCH v5 2/8] drm/meson: add Amlogic Video FBC registers Neil Armstrong
2020-04-16 15:24 ` [PATCH v5 3/8] drm/meson: overlay: setup overlay for Amlogic FBC Neil Armstrong
2020-04-16 15:24 ` [PATCH v5 4/8] drm/meson: crtc: handle commit of Amlogic FBC frames Neil Armstrong
2020-04-16 15:24 ` Neil Armstrong [this message]
2020-04-16 15:24 ` [PATCH v5 6/8] drm/meson: overlay: setup overlay for Amlogic FBC Memory Saving mode Neil Armstrong
2020-04-16 15:24 ` [PATCH v5 7/8] drm/fourcc: amlogic: Add modifier definitions for the Scatter layout Neil Armstrong
2020-04-16 15:25 ` [PATCH v5 8/8] drm/meson: overlay: setup overlay for Amlogic FBC Scatter Memory layout Neil Armstrong
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