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SubjectRe: [PATCH] [RFC] drm_hwcomposer: Add support for Arm Framebuffer Compression (AFBC) modifiers.
On Tue, Jan 15, 2019 at 01:38:19PM +0100, Daniel Vetter wrote:
> On Tue, Jan 15, 2019 at 1:24 PM Liviu Dudau <Liviu.Dudau@arm.com> wrote:
> >
> > On Tue, Jan 15, 2019 at 01:05:47PM +0100, Daniel Vetter wrote:
> > > On Mon, Jan 14, 2019 at 03:28:27PM +0000, Ayan Halder wrote:
> > > > One needs to translate the Gralloc buffer flags for AFBC (eg
> > > > MALI_GRALLOC_INTFMT_AFBC_BASIC) to the corresponding linux kernel drm modifiers.
> > > > This gets passed to libdrm via drmModeAddFB2WithModifiers.
> > > >
> > > > Signed-off-by: Ayan Kumar Halder <ayan.halder@arm.com>
> > > >
> > > > /-- Note for reviewer
> > > > I was able to get this working for Android P on Juno with Mali DP650 and Mali
> > > > T860 gpu(with some additional hacks). I have not yet validated this hikey960.
> > > >
> > > > I have used the following components:-
> > > > 1. Gralloc (from https://android.googlesource.com/device/linaro/hikey/+/master/gralloc960)
> > > > - Built with MALI_MMSS=1
> > > > 2. Libdrm (from git://anongit.freedesktop.org/mesa/drm)
> > > > - You would need drm_fourcc.h and gralloc_handle.h
> > > > --/
> > >
> > > I thought drm_hwcomposer has switched over to gitlab merge requests?
> > > README at least says so:
> > >
> > > https://gitlab.freedesktop.org/drm-hwcomposer/drm-hwcomposer
> >
> > So are we to send pull requests for RFCs as well?
>
> Hm, not sure you should stuff RFC material into your linux-next
> branches. I thought that's only for patches which by all intents are
> ready for the next merge window, i.e. reviewed&tested and all that.
> Not for in-flight stuff still under discussion.

I think you're confusing the documentation patch with the drm_hwcomposer one (this one).

Best regards,
Liviu

> -Daniel
>
>
> > Best regards,
> > Liviu
> >
> > >
> > > Cheers, Daniel
> > >
> > > > ---
> > > > platformdrmgeneric.cpp | 42 ++++++++++++++++++++++++++++++++++++++++++
> > > > platformdrmgeneric.h | 2 ++
> > > > platformhisi.cpp | 14 ++++++++++++--
> > > > 3 files changed, 56 insertions(+), 2 deletions(-)
> > > >
> > > > diff --git a/platformdrmgeneric.cpp b/platformdrmgeneric.cpp
> > > > index 503c04a..a520224 100644
> > > > --- a/platformdrmgeneric.cpp
> > > > +++ b/platformdrmgeneric.cpp
> > > > @@ -18,6 +18,7 @@
> > > >
> > > > #include "platformdrmgeneric.h"
> > > > #include "drmdevice.h"
> > > > +#include "mali_gralloc_formats.h"
> > > > #include "platform.h"
> > > >
> > > > #include <drm/drm_fourcc.h>
> > > > @@ -83,6 +84,31 @@ uint32_t DrmGenericImporter::ConvertHalFormatToDrm(uint32_t hal_format) {
> > > > }
> > > > }
> > > >
> > > > +uint64_t DrmGenericImporter::ConvertGrallocFormatToDrmModifiers(uint64_t flags,
> > > > + bool is_rgb) {
> > > > + uint64_t features = 0;
> > > > +
> > > > + if (flags & MALI_GRALLOC_INTFMT_AFBC_BASIC)
> > > > + features |= AFBC_FORMAT_MOD_BLOCK_SIZE_16x16;
> > > > +
> > > > + if (is_rgb)
> > > > + features |= AFBC_FORMAT_MOD_YTR;
> > > > +
> > > > + if (flags & MALI_GRALLOC_INTFMT_AFBC_SPLITBLK)
> > > > + features |= (AFBC_FORMAT_MOD_SPLIT | AFBC_FORMAT_MOD_SPARSE);
> > > > +
> > > > + if (flags & MALI_GRALLOC_INTFMT_AFBC_WIDEBLK)
> > > > + features |= AFBC_FORMAT_MOD_BLOCK_SIZE_32x8;
> > > > +
> > > > + if (flags & MALI_GRALLOC_INTFMT_AFBC_TILED_HEADERS)
> > > > + features |= AFBC_FORMAT_MOD_TILED;
> > > > +
> > > > + if (features)
> > > > + return DRM_FORMAT_MOD_ARM_AFBC(features);
> > > > + else
> > > > + return 0;
> > > > +}
> > > > +
> > > > uint32_t DrmGenericImporter::DrmFormatToBitsPerPixel(uint32_t drm_format) {
> > > > switch (drm_format) {
> > > > case DRM_FORMAT_ARGB8888:
> > > > @@ -101,6 +127,22 @@ uint32_t DrmGenericImporter::DrmFormatToBitsPerPixel(uint32_t drm_format) {
> > > > }
> > > > }
> > > >
> > > > +bool DrmGenericImporter::IsDrmFormatRgb(uint32_t drm_format) {
> > > > + switch (drm_format) {
> > > > + case DRM_FORMAT_ARGB8888:
> > > > + case DRM_FORMAT_XBGR8888:
> > > > + case DRM_FORMAT_ABGR8888:
> > > > + case DRM_FORMAT_BGR888:
> > > > + case DRM_FORMAT_BGR565:
> > > > + return true;
> > > > + case DRM_FORMAT_YVU420:
> > > > + return false;
> > > > + default:
> > > > + ALOGE("Unsupported format %u assuming rgb?", drm_format);
> > > > + return true;
> > > > + }
> > > > +}
> > > > +
> > > > int DrmGenericImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
> > > > gralloc_handle_t *gr_handle = gralloc_handle(handle);
> > > > if (!gr_handle)
> > > > diff --git a/platformdrmgeneric.h b/platformdrmgeneric.h
> > > > index 233ba55..43cb618 100644
> > > > --- a/platformdrmgeneric.h
> > > > +++ b/platformdrmgeneric.h
> > > > @@ -36,6 +36,8 @@ class DrmGenericImporter : public Importer {
> > > > bool CanImportBuffer(buffer_handle_t handle) override;
> > > >
> > > > uint32_t ConvertHalFormatToDrm(uint32_t hal_format);
> > > > + uint64_t ConvertGrallocFormatToDrmModifiers(uint64_t flags, bool is_rgb);
> > > > + bool IsDrmFormatRgb(uint32_t drm_format);
> > > > uint32_t DrmFormatToBitsPerPixel(uint32_t drm_format);
> > > >
> > > > private:
> > > > diff --git a/platformhisi.cpp b/platformhisi.cpp
> > > > index 76fe1e7..1cb7e2c 100644
> > > > --- a/platformhisi.cpp
> > > > +++ b/platformhisi.cpp
> > > > @@ -71,6 +71,9 @@ int HisiImporter::Init() {
> > > > }
> > > >
> > > > int HisiImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
> > > > + bool is_rgb;
> > > > + uint64_t modifiers[4] = {0};
> > > > +
> > > > memset(bo, 0, sizeof(hwc_drm_bo_t));
> > > >
> > > > private_handle_t const *hnd = reinterpret_cast<private_handle_t const *>(
> > > > @@ -94,6 +97,10 @@ int HisiImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
> > > > if (fmt < 0)
> > > > return fmt;
> > > >
> > > > + is_rgb = IsDrmFormatRgb(fmt);
> > > > + modifiers[0] = ConvertGrallocFormatToDrmModifiers(hnd->internal_format,
> > > > + is_rgb);
> > > > +
> > > > bo->width = hnd->width;
> > > > bo->height = hnd->height;
> > > > bo->hal_format = hnd->req_format;
> > > > @@ -129,8 +136,11 @@ int HisiImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
> > > > break;
> > > > }
> > > >
> > > > - ret = drmModeAddFB2(drm_->fd(), bo->width, bo->height, bo->format,
> > > > - bo->gem_handles, bo->pitches, bo->offsets, &bo->fb_id, 0);
> > > > + ret = drmModeAddFB2WithModifiers(drm_->fd(), bo->width, bo->height,
> > > > + bo->format, bo->gem_handles, bo->pitches,
> > > > + bo->offsets, modifiers, &bo->fb_id,
> > > > + modifiers[0] ? DRM_MODE_FB_MODIFIERS : 0);
> > > > +
> > > > if (ret) {
> > > > ALOGE("could not create drm fb %d", ret);
> > > > return ret;
> > > > --
> > > > 2.7.4
> > > >
> > > > _______________________________________________
> > > > dri-devel mailing list
> > > > dri-devel@lists.freedesktop.org
> > > > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> > >
> > > --
> > > Daniel Vetter
> > > Software Engineer, Intel Corporation
> > > http://blog.ffwll.ch
> >
> > --
> > ====================
> > | I would like to |
> > | fix the world, |
> > | but they're not |
> > | giving me the |
> > \ source code! /
> > ---------------
> > ¯\_(ツ)_/¯
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
>
>
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> +41 (0) 79 365 57 48 - http://blog.ffwll.ch

--
====================
| I would like to |
| fix the world, |
| but they're not |
| giving me the |
\ source code! /
---------------
¯\_(ツ)_/¯

\
 
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