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/20211006193819.2654854-1-swboyd@chromium.org): - 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/20210520002519.3538432-1-swboyd@chromium.org): - 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/20210508074118.1621729-1-swboyd@chromium.org
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 arnd@arndb.de Cc: Benjamin Gaignard benjamin.gaignard@linaro.org Cc: Chen Feng puck.chen@hisilicon.com Cc: Chen-Yu Tsai wens@csie.org Cc: Christian Gmeiner christian.gmeiner@gmail.com Cc: Chun-Kuang Hu chunkuang.hu@kernel.org Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: Emma Anholt emma@anholt.net Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Cc: "Heiko Stübner" heiko@sntech.de Cc: Inki Dae inki.dae@samsung.com Cc: James Qian Wang (Arm Technology China) james.qian.wang@arm.com Cc: Jaroslav Kysela perex@perex.cz Cc: Joerg Roedel joro@8bytes.org Cc: John Stultz john.stultz@linaro.org Cc: Joonyoung Shim jy0922.shim@samsung.com Cc: Jyri Sarha jyri.sarha@iki.fi Cc: Kai Vehmanen kai.vehmanen@linux.intel.com Cc: Kyungmin Park kyungmin.park@samsung.com Cc: Laurent Pinchart laurent.pinchart@ideasonboard.com Cc: linux-fbdev@vger.kernel.org Cc: linux-omap@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: Linus Walleij linus.walleij@linaro.org Cc: Liviu Dudau liviu.dudau@arm.com Cc: Lucas Stach l.stach@pengutronix.de Cc: Mark Brown broonie@kernel.org Cc: Maxime Ripard mripard@kernel.org Cc: Neil Armstrong narmstrong@baylibre.com Cc: Paul Cercueil paul@crapouillou.net Cc: Philipp Zabel p.zabel@pengutronix.de Cc: "Rafael J. Wysocki" rafael@kernel.org Cc: Rob Clark robdclark@gmail.com Cc: Russell King linux@armlinux.org.uk Cc: Russell King linux+etnaviv@armlinux.org.uk Cc: Russell King rmk+kernel@arm.linux.org.uk Cc: Sandy Huang hjc@rock-chips.com Cc: Saravana Kannan saravanak@google.com Cc: Sebastian Reichel sre@kernel.org Cc: Seung-Woo Kim sw0312.kim@samsung.com Cc: Takashi Iwai tiwai@suse.com Cc: Tian Tao tiantao6@hisilicon.com Cc: Tomas Winkler tomas.winkler@intel.com Cc: Tomi Valkeinen tomba@kernel.org Cc: Will Deacon will@kernel.org Cc: Xinliang Liu xinliang.liu@linaro.org Cc: Xinwei Kong kong.kongxinwei@hisilicon.com Cc: Yong Wu yong.wu@mediatek.com
base-commit: e4e737bb5c170df6135a127739a9e6148ee3da82