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99f6bef7de
* Attach Meson64 CURRENT to 5.6.y and make DEV = CURRENT at this point. There is a lot of changes to 5.7.y and can be done after release or by someone that feels a need for this right now. * Delete meson64_fclk_div3.patch this fix has been upstream for some time, I had issues with it on 5.4, which is why it had been removed there. * [ meson64 current ] kconfig tweak disable Rockchip SoC drivers * [ meson64 current ] remove rockchip patches * [ meson64 current ] disable CMA patch GX * [ meson64 current] add libretech cc audio patch This brings the dts even with the khilman 5.8/integ branch which includes all of the audio changes. The kernel is registering audio devices, however nothing comes out. committed in case someone wants to spend time debugging/testing theories. * fix permissions was editing from another machine, accidental change of permissions in the patch * Set default mixer settings Signed-off-by: Igor Pecovnik <igor.pecovnik@gmail.com> * [ meson64 current ] GXL audio commit This moves to the mainline patches and covers le potato and la frite. Adjusted asound config to handle a commonized sound card name. * [ meson64 current ] add gxbb audio WIP Playback is too fast, a clock setting is off somewhere. * Update kernel configs Signed-off-by: Igor Pecovnik <igor.pecovnik@gmail.com> Co-authored-by: Tony <tonymckahan@gmail.com>
111 lines
3.9 KiB
Diff
111 lines
3.9 KiB
Diff
From fac579148d3775144bbe922ef013bd4e134fc6df Mon Sep 17 00:00:00 2001
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From: Neil Armstrong <narmstrong@baylibre.com>
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Date: Thu, 20 Feb 2020 17:13:26 +0000
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Subject: [PATCH 076/101] FROMLIST: drm/fourcc: Add modifier definitions for
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describing Amlogic Video Framebuffer Compression
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Amlogic uses a proprietary lossless image compression protocol and format
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for their hardware video codec accelerators, either video decoders or
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video input encoders.
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It considerably reduces memory bandwidth while writing and reading
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frames in memory.
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The underlying storage is considered to be 3 components, 8bit or 10-bit
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per component, YCbCr 420, single plane :
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- DRM_FORMAT_YUV420_8BIT
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- DRM_FORMAT_YUV420_10BIT
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This modifier will be notably added to DMA-BUF frames imported from the V4L2
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Amlogic VDEC decoder.
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At least two options are supported :
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- Scatter mode: the buffer is filled with a IOMMU scatter table referring
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to the encoder current memory layout. This mode if more efficient in terms
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of memory allocation but frames are not dumpable and only valid during until
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the buffer is freed and back in control of the encoder
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- Memory saving: when the pixel bpp is 8b, the size of the superblock can
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be reduced, thus saving memory.
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Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
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---
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include/uapi/drm/drm_fourcc.h | 56 +++++++++++++++++++++++++++++++++++
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1 file changed, 56 insertions(+)
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diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
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index 8bc0b31597d8..8a6e87bacadb 100644
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--- a/include/uapi/drm/drm_fourcc.h
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+++ b/include/uapi/drm/drm_fourcc.h
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@@ -309,6 +309,7 @@ extern "C" {
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#define DRM_FORMAT_MOD_VENDOR_BROADCOM 0x07
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#define DRM_FORMAT_MOD_VENDOR_ARM 0x08
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#define DRM_FORMAT_MOD_VENDOR_ALLWINNER 0x09
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+#define DRM_FORMAT_MOD_VENDOR_AMLOGIC 0x0a
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/* add more to the end as needed */
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@@ -804,6 +805,61 @@ extern "C" {
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*/
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#define DRM_FORMAT_MOD_ALLWINNER_TILED fourcc_mod_code(ALLWINNER, 1)
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+/*
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+ * Amlogic Video Framebuffer Compression modifiers
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+ *
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+ * Amlogic uses a proprietary lossless image compression protocol and format
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+ * for their hardware video codec accelerators, either video decoders or
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+ * video input encoders.
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+ *
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+ * It considerably reduces memory bandwidth while writing and reading
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+ * frames in memory.
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+ * Implementation details may be platform and SoC specific, and shared
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+ * between the producer and the decoder on the same platform.
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+ *
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+ * The underlying storage is considered to be 3 components, 8bit or 10-bit
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+ * per component YCbCr 420, single plane :
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+ * - DRM_FORMAT_YUV420_8BIT
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+ * - DRM_FORMAT_YUV420_10BIT
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+ *
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+ * The classic memory storage is composed of:
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+ * - a body content organized in 64x32 superblocks with 4096 bytes per
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+ * superblock in default mode.
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+ * - a 32 bytes per 128x64 header block
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+ */
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+#define DRM_FORMAT_MOD_AMLOGIC_FBC_DEFAULT fourcc_mod_code(AMLOGIC, 0)
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+
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+/*
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+ * Amlogic Video Framebuffer Compression Options
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+ *
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+ * Two optional features are available which may not supported/used on every
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+ * SoCs and Compressed Framebuffer producers.
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+ */
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+#define DRM_FORMAT_MOD_AMLOGIC_FBC(__modes) fourcc_mod_code(AMLOGIC, __modes)
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+
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+/*
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+ * Amlogic FBC Scatter Memory layout
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+ *
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+ * Indicates the header contains IOMMU references to the compressed
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+ * frames content to optimize memory access and layout.
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+ * In this mode, only the header memory address is needed, thus the
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+ * content memory organization is tied to the current producer
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+ * execution and cannot be saved/dumped.
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+ */
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+#define DRM_FORMAT_MOD_AMLOGIC_FBC_SCATTER (1ULL << 0)
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+
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+/*
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+ * Amlogic FBC Memory Saving mode
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+ *
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+ * Indicates the storage is packed when pixel size is multiple of word
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+ * boudaries, i.e. 8bit should be stored in this mode to save allocation
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+ * memory.
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+ *
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+ * This mode reduces body layout to 3072 bytes per 64x32 superblock and
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+ * 3200 bytes per 64x32 superblock combined with scatter mode.
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+ */
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+#define DRM_FORMAT_MOD_AMLOGIC_FBC_MEM_SAVING (1ULL << 1)
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+
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#if defined(__cplusplus)
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}
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#endif
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--
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2.17.1
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