talos-op-linux/drivers/gpu/drm/vc4, branch master

drm/vc4: dsi: Fix bridge chain handling

2020-01-08T08:09:48+00:00

Commit 05193dc38197 ("drm/bridge: Make the bridge chain a double-linked list") patched the bridge chain logic to use a double-linked list instead of a single-linked list. This change induced changes to the VC4 driver which was manually resetting the encoder->bridge element to NULL to control the enable/disable sequence of the bridge chain. During this conversion, 2 bugs were introduced: 1/ list_splice() was used to move chain elements to our own internal chain, but list_splice() does not reset the source list to an empty state, leading to unexpected bridge hook calls when drm_bridge_chain_xxx() helpers were called by the core. Replacing those list_splice() calls by list_splice_init() ones fixes this problem. 2/ drm_bridge_chain_xxx() helpers operate on the bridge->encoder->bridge_chain list, which is now empty. When the helper uses list_for_each_entry_reverse() we end up with no operation done which is not what we want. But that's even worse when the helper uses list_for_each_entry_from(), because in that case we end up in an infinite loop searching for the list head element which is no longer encoder->bridge_chain but vc4_dsi->bridge_chain. To address that problem we stop using the bridge chain helpers and call the hooks directly. Reported-by: Marek Szyprowski Cc: Eric Anholt Fixes: 05193dc38197 ("drm/bridge: Make the bridge chain a double-linked list") Signed-off-by: Boris Brezillon Reviewed-by: Andrzej Hajda Acked-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/20191227144124.210294-2-boris.brezillon@collabora.com

drm/vc4: Provide ddc symlink in connector sysfs directory

2020-01-07T19:25:43+00:00

Use the ddc pointer provided by the generic connector. Signed-off-by: Andrzej Pietrasiewicz Acked-by: Sam Ravnborg Reviewed-by: Emil Velikov Link: https://patchwork.freedesktop.org/patch/msgid/20200102132300.24309-3-andrzej.p@collabora.com

drm/vc4: Use dma_resv locking wrappers

2019-12-17T16:26:08+00:00

I'll add more fancy logic to them soon, so everyone really has to use them. Plus they already provide some nice additional debug infrastructure on top of direct ww_mutex usage for the fences tracked by dma_resv. Reviewed-by: Eric Anholt Cc: Eric Anholt Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20191125094356.161941-5-daniel.vetter@ffwll.ch

drm/bridge: Make the bridge chain a double-linked list

2019-12-09T09:03:01+00:00

So that each element in the chain can easily access its predecessor. This will be needed to support bus format negotiation between elements of the bridge chain. Signed-off-by: Boris Brezillon Reviewed-by: Neil Armstrong Reviewed-by: Laurent Pinchart Link: https://patchwork.freedesktop.org/patch/msgid/20191203141515.3597631-5-boris.brezillon@collabora.com

drm/bridge: Rename bridge helpers targeting a bridge chain

2019-12-09T09:01:39+00:00

Change the prefix of bridge helpers targeting a bridge chain from drm_bridge_ to drm_bridge_chain_ to better reflect the fact that the operation will happen on all elements of chain, starting at the bridge passed in argument. Signed-off-by: Boris Brezillon Reviewed-by: Neil Armstrong Acked-by: Laurent Pinchart Link: https://patchwork.freedesktop.org/patch/msgid/20191203141515.3597631-2-boris.brezillon@collabora.com

drm/vc4: Fix Kconfig indentation

2019-11-25T09:04:41+00:00

Adjust indentation from spaces to tab (+optional two spaces) as in coding style with command like: $ sed -e 's/^ /\t/' -i */Kconfig Signed-off-by: Krzysztof Kozlowski Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20191121132919.29430-1-krzk@kernel.org

Merge drm/drm-next into drm-misc-next

2019-10-23T15:14:11+00:00

Parroting Daniel's backmerge justification from 2e79e22e092acd55da0b2db066e4826d7d152c41: Thierry needs fd70c7755bf0 ("drm/bridge: tc358767: fix max_tu_symbol value") to be able to merge his dp_link patch series. Signed-off-by: Sean Paul

drm/vc4: Use drm_hdmi_avi_infoframe_bars()

2019-10-22T16:19:37+00:00

Use the new drm_hdmi_avi_infoframe_bars() helper instead of hand rolling it. Cc: Eric Anholt Cc: Boris Brezillon Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20191008164814.5894-2-ville.syrjala@linux.intel.com Reviewed-by: Boris Brezillon

Merge tag 'drm-misc-next-2019-10-09-2' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2019-10-10T23:30:53+00:00

drm-misc-next for 5.5: UAPI Changes: -Colorspace: Expose different prop values for DP vs. HDMI (Gwan-gyeong Mun) -fourcc: Add DRM_FORMAT_MOD_ARM_16X16_BLOCK_U_INTERLEAVED (Raymond) -not_actually: s/ENOTSUPP/EOPNOTSUPP/ in drm_edid and drm_mipi_dbi. This should not reach userspace, but adding here to specifically call that out (Daniel) -i810: Prevent underflow in dispatch ioctls (Dan) -komeda: Add ACLK sysfs attribute (Mihail) -v3d: Allow userspace to clean up after render jobs (Iago) Cross-subsystem Changes: -MAINTAINERS: -Add Alyssa & Steven as panfrost reviewers (Rob) -Add Jernej as DE2 reviewer (Maxime) -Add Chen-Yu as Allwinner maintainer (Maxime) -staging: Make some stack arrays static const (Colin) Core Changes: -ttm: Allow drivers to specify their vma manager (to use gem mgr) (Gerd) -docs: Various fixes in connector/encoder/bridge docs (Daniel, Lyude, Laurent) -connector: Allow more than 3 possible encoders for a connector (José) -dp_cec: Allow a connector to be associated with a cec device (Dariusz) -various: Fix some compile/sparse warnings (Ville) -mm: Ensure mm node removals are properly serialised (Chris) -panel: Specify the type of panel for drm_panels for later use (Laurent) -panel: Use drm_panel_init to init device and funcs (Laurent) -mst: Refactors and cleanups in anticipation of suspend/resume support (Lyude) -vram: -Add lazy unmapping for gem bo's (Thomas) -Unify and rationalize vram mm and gem vram (Thomas) -Expose vmap and vunmap for gem vram objects (Thomas) -Allow objects to be pinned at the top of vram to avoid fragmentation (Thomas) Driver Changes: -various: Include drm_bridge.h instead of relying on drm_crtc.h (Boris) -ast/mgag200: Refactor show_cursor(), move cursor to top of video mem (Thomas) -komeda: -Add error event printing (behind CONFIG) and reg dump support (Lowry) -Add suspend/resume support (Lowry) -Workaround D71 shadow registers not flushing on disable (Lowry) -meson: Add suspend/resume support (Neil) -omap: Miscellaneous refactors and improvements (Tomi/Jyri) -panfrost/shmem: Silence lockdep by using mutex_trylock (Rob) -panfrost: Miscellaneous small fixes (Rob/Steven) -sti: Fix warnings (Benjamin/Linus) -sun4i: -Add vcc-dsi regulator to sun6i_mipi_dsi (Jagan) -A few patches to figure out the DRQ/start delay calc on dsi (Jagan/Icenowy) -virtio: -Add module param to switch resource reuse workaround on/off (Gerd) -Avoid calling vmexit while holding spinlock (Gerd) -Use gem shmem helpers instead of ttm (Gerd) -Accommodate command buffer allocations too big for cma (David) Cc: Rob Herring Cc: Maxime Ripard Cc: Gwan-gyeong Mun Cc: Gerd Hoffmann Cc: Laurent Pinchart Cc: Lyude Paul Cc: José Roberto de Souza Cc: Dariusz Marcinkiewicz Cc: Ville Syrjälä Cc: Raymond Smith Cc: Chris Wilson Cc: Colin Ian King Cc: Thomas Zimmermann Cc: Dan Carpenter Cc: Mihail Atanassov Cc: Lowry Li Cc: Neil Armstrong Cc: Jyri Sarha Cc: Tomi Valkeinen Cc: Alyssa Rosenzweig Cc: Steven Price Cc: Benjamin Gaignard Cc: Linus Walleij Cc: Jagan Teki Cc: Icenowy Zheng Cc: Iago Toral Quiroga Cc: David Riley Signed-off-by: Dave Airlie # gpg: Signature made Thu 10 Oct 2019 01:00:47 AM AEST # gpg: using RSA key 732C002572DCAF79 # gpg: Can't check signature: public key not found # Conflicts: # drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c # drivers/gpu/drm/i915/i915_drv.c # drivers/gpu/drm/i915/i915_gem.c # drivers/gpu/drm/i915/i915_gem_gtt.c # drivers/gpu/drm/i915/i915_vma.c From: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/20191009150825.GA227673@art_vandelay

drm/mm: Use helpers for drm_mm_node booleans

2019-10-04T12:42:33+00:00

In preparation for rearranging the booleans into a flags field, ensure all the current users are using the inline helpers and not directly accessing the members. Signed-off-by: Chris Wilson Reviewed-by: Tvrtko Ursulin Link: https://patchwork.freedesktop.org/patch/msgid/20191003210100.22250-3-chris@chris-wilson.co.uk