| From: |
| Boris Brezillon <boris.brezillon-AT-collabora.com> |
| To: |
| dri-devel-AT-lists.freedesktop.org |
| Subject: |
| [PATCH v4 00/11] drm: Add support for bus-format negotiation |
| Date: |
| Tue, 3 Dec 2019 15:15:04 +0100 |
| Message-ID: |
| <20191203141515.3597631-1-boris.brezillon@collabora.com> |
| Cc: |
| Lucas Stach <l.stach-AT-pengutronix.de>, Chris Healy <cphealy-AT-gmail.com>, Andrey Smirnov <andrew.smirnov-AT-gmail.com>, Nikita Yushchenko <nikita.yoush-AT-cogentembedded.com>, kernel-AT-collabora.com, Daniel Vetter <daniel-AT-ffwll.ch>, Inki Dae <inki.dae-AT-samsung.com>, Joonyoung Shim <jy0922.shim-AT-samsung.com>, Seung-Woo Kim <sw0312.kim-AT-samsung.com>, Kyungmin Park <kyungmin.park-AT-samsung.com>, Thierry Reding <thierry.reding-AT-gmail.com>, Sam Ravnborg <sam-AT-ravnborg.org>, Philipp Zabel <p.zabel-AT-pengutronix.de>, Rob Clark <robdclark-AT-gmail.com>, Andrzej Hajda <a.hajda-AT-samsung.com>, Neil Armstrong <narmstrong-AT-baylibre.com>, Laurent Pinchart <Laurent.pinchart-AT-ideasonboard.com>, Jonas Karlman <jonas-AT-kwiboo.se>, Jernej Skrabec <jernej.skrabec-AT-siol.net>, Rob Herring <robh+dt-AT-kernel.org>, Mark Rutland <mark.rutland-AT-arm.com>, devicetree-AT-vger.kernel.org, Eric Anholt <eric-AT-anholt.net>, Boris Brezillon <boris.brezillon-AT-collabora.com> |
| Archive-link: |
| Article |
This patch series aims at adding support for runtime bus-format
negotiation between all elements of the
'encoder -> bridges -> connector/display' section of the pipeline.
In order to support that, we need drm bridges to fully take part in the
atomic state validation process, which requires adding a
drm_bridge_state and a new drm_bridge_funcs.atomic_check() hook.
Once those basic building blocks are in place, we can add new hooks to
allow bus format negotiation (those are called just before
->atomic_check()). The bus format selection is done at runtime by
testing all possible combinations across the whole bridge chain until
one is reported to work.
No Major changes in this v4. I think I addressed all comments I got
from Neil and Laurent (thanks for the detailed reviews BTW). Note that
this version only contains core changes. Once those changes are merged
I'll send the imx/panel/lvds-codec specific bits.
A more detailed changelog is provided in each patch.
This patch series is also available here [1].
Thanks,
Boris
[1]https://github.com/bbrezillon/linux-0day/commits/drm-brid...
Boris Brezillon (11):
drm/bridge: Rename bridge helpers targeting a bridge chain
drm/bridge: Introduce drm_bridge_get_next_bridge()
drm: Stop accessing encoder->bridge directly
drm/bridge: Make the bridge chain a double-linked list
drm/bridge: Add the drm_for_each_bridge_in_chain() helper
drm/bridge: Add the drm_bridge_get_prev_bridge() helper
drm/bridge: Clarify the atomic enable/disable hooks semantics
drm/bridge: Add a drm_bridge_state object
drm/bridge: Patch atomic hooks to take a drm_bridge_state
drm/bridge: Add an ->atomic_check() hook
drm/bridge: Add the necessary bits to support bus format negotiation
.../drm/bridge/analogix/analogix_dp_core.c | 41 +-
drivers/gpu/drm/drm_atomic.c | 39 +
drivers/gpu/drm/drm_atomic_helper.c | 53 +-
drivers/gpu/drm/drm_bridge.c | 756 +++++++++++++++---
drivers/gpu/drm/drm_encoder.c | 15 +-
drivers/gpu/drm/drm_probe_helper.c | 4 +-
drivers/gpu/drm/exynos/exynos_drm_dsi.c | 13 +-
drivers/gpu/drm/mediatek/mtk_hdmi.c | 8 +-
drivers/gpu/drm/msm/edp/edp_bridge.c | 10 +-
drivers/gpu/drm/omapdrm/omap_drv.c | 4 +-
drivers/gpu/drm/omapdrm/omap_encoder.c | 3 +-
drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 10 +-
drivers/gpu/drm/vc4/vc4_dsi.c | 18 +-
include/drm/drm_atomic.h | 3 +
include/drm/drm_bridge.h | 404 +++++++++-
include/drm/drm_encoder.h | 7 +-
16 files changed, 1174 insertions(+), 214 deletions(-)
--
2.23.0
