This series is from discussion we had on reordering the device lists for drm shutdown paths[1]. I've introduced an 'aggregate' bus that we put the aggregate device onto and then we probe the aggregate device once all the components are probed and call component_add(). The probe/remove hooks are where the bind/unbind calls go, and then a shutdown hook is added that can be used to shutdown the drm display pipeline at the right time.
This works for me on my sc7180 board. I no longer get a warning from i2c at shutdown that we're trying to make an i2c transaction after the i2c bus has been shutdown. There's more work to do on the msm drm driver to extract component device resources like clks, regulators, etc. out of the component bind function into the driver probe but I wanted to move everything over now in other component drivers before tackling that problem. Tested-by tags would be appreciated, and Acked-by/Reviewed-by tags too. I sent this to gregkh which may be incorrect but I don't know what better tree to send it all through. Maybe drm? Changes since v2 (https://lore.kernel.org/r/[email protected]): - Picked up acks - Fixed build warnings/errors - Reworked patch series to rename 'master' in a different patch Changes since v1 (https://lore.kernel.org/r/[email protected]): - Use devlink to connect components to the aggregate device - Don't set the registering device as a parent of the aggregate device - New patch for bind_component/unbind_component ops that takes the aggregate device - Convert all drivers in the tree to use the aggregate driver approach - Allow one aggregate driver to be used for multiple aggregate devices [1] https://lore.kernel.org/r/[email protected] Stephen Boyd (34): component: Introduce struct aggregate_device component: Remove most references to 'master' component: Introduce the aggregate bus_type component: Move struct aggregate_device out to header file component: Add {bind,unbind}_component() ops that take aggregate device drm/of: Add a drm_of_aggregate_probe() API drm/msm: Migrate to aggregate driver drm/komeda: Migrate to aggregate driver drm/arm/hdlcd: Migrate to aggregate driver drm/malidp: Migrate to aggregate driver drm/armada: Migrate to aggregate driver drm/etnaviv: Migrate to aggregate driver drm/kirin: Migrate to aggregate driver drm/exynos: Migrate to aggregate driver drm/imx: Migrate to aggregate driver drm/ingenic: Migrate to aggregate driver drm/mcde: Migrate to aggregate driver drm/mediatek: Migrate to aggregate driver drm/meson: Migrate to aggregate driver drm/omap: Migrate to aggregate driver drm/rockchip: Migrate to aggregate driver drm/sti: Migrate to aggregate driver drm/sun4i: Migrate to aggregate driver drm/tilcdc: Migrate to aggregate driver drm/vc4: Migrate to aggregate driver drm/zte: Migrate to aggregate driver iommu/mtk: Migrate to aggregate driver mei: Migrate to aggregate driver power: supply: ab8500: Migrate to aggregate driver fbdev: omap2: Migrate to aggregate driver sound: hdac: Migrate to aggregate driver ASoC: codecs: wcd938x: Migrate to aggregate driver component: Get rid of drm_of_component_probe() component: Remove component_master_ops and friends drivers/base/component.c | 540 ++++++++++-------- .../gpu/drm/arm/display/komeda/komeda_drv.c | 20 +- drivers/gpu/drm/arm/hdlcd_drv.c | 21 +- drivers/gpu/drm/arm/malidp_drv.c | 21 +- drivers/gpu/drm/armada/armada_drv.c | 23 +- drivers/gpu/drm/drm_drv.c | 2 +- drivers/gpu/drm/drm_of.c | 18 +- drivers/gpu/drm/etnaviv/etnaviv_drv.c | 20 +- drivers/gpu/drm/exynos/exynos_drm_drv.c | 21 +- .../gpu/drm/hisilicon/kirin/kirin_drm_drv.c | 20 +- drivers/gpu/drm/imx/imx-drm-core.c | 20 +- drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 25 +- drivers/gpu/drm/mcde/mcde_drv.c | 23 +- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 20 +- drivers/gpu/drm/meson/meson_drv.c | 21 +- drivers/gpu/drm/msm/msm_drv.c | 46 +- drivers/gpu/drm/omapdrm/dss/dss.c | 17 +- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 20 +- drivers/gpu/drm/sti/sti_drv.c | 20 +- drivers/gpu/drm/sun4i/sun4i_drv.c | 26 +- drivers/gpu/drm/tilcdc/tilcdc_drv.c | 28 +- drivers/gpu/drm/vc4/vc4_drv.c | 20 +- drivers/gpu/drm/zte/zx_drm_drv.c | 20 +- drivers/iommu/mtk_iommu.c | 14 +- drivers/iommu/mtk_iommu.h | 6 +- drivers/iommu/mtk_iommu_v1.c | 14 +- drivers/misc/mei/hdcp/mei_hdcp.c | 22 +- drivers/power/supply/ab8500_charger.c | 22 +- drivers/video/fbdev/omap2/omapfb/dss/dss.c | 20 +- include/drm/drm_of.h | 10 +- include/linux/component.h | 92 ++- sound/hda/hdac_component.c | 21 +- sound/soc/codecs/wcd938x.c | 20 +- 33 files changed, 767 insertions(+), 486 deletions(-) Cc: Arnd Bergmann <[email protected]> Cc: Benjamin Gaignard <[email protected]> Cc: Chen Feng <[email protected]> Cc: Chen-Yu Tsai <[email protected]> Cc: Christian Gmeiner <[email protected]> Cc: Chun-Kuang Hu <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Emma Anholt <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: "Heiko Stübner" <[email protected]> Cc: Inki Dae <[email protected]> Cc: James Qian Wang (Arm Technology China) <[email protected]> Cc: Jaroslav Kysela <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: John Stultz <[email protected]> Cc: Joonyoung Shim <[email protected]> Cc: Jyri Sarha <[email protected]> Cc: Kai Vehmanen <[email protected]> Cc: Kyungmin Park <[email protected]> Cc: Laurent Pinchart <[email protected]> Cc: <[email protected]> Cc: <[email protected]> Cc: <[email protected]> Cc: Linus Walleij <[email protected]> Cc: Liviu Dudau <[email protected]> Cc: Lucas Stach <[email protected]> Cc: Mark Brown <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: Neil Armstrong <[email protected]> Cc: Paul Cercueil <[email protected]> Cc: Philipp Zabel <[email protected]> Cc: "Rafael J. Wysocki" <[email protected]> Cc: Rob Clark <[email protected]> Cc: Russell King <[email protected]> Cc: Russell King <[email protected]> Cc: Russell King <[email protected]> Cc: Sandy Huang <[email protected]> Cc: Saravana Kannan <[email protected]> Cc: Sebastian Reichel <[email protected]> Cc: Seung-Woo Kim <[email protected]> Cc: Takashi Iwai <[email protected]> Cc: Tian Tao <[email protected]> Cc: Tomas Winkler <[email protected]> Cc: Tomi Valkeinen <[email protected]> Cc: Will Deacon <[email protected]> Cc: Xinliang Liu <[email protected]> Cc: Xinwei Kong <[email protected]> Cc: Yong Wu <[email protected]> base-commit: e4e737bb5c170df6135a127739a9e6148ee3da82 -- https://chromeos.dev
