| Message ID | 20211202222732.2453851-1-swboyd@chromium.org |
|---|---|
| Headers | show |
| Series | component: Make into an aggregate bus | expand |
Quoting Daniel Vetter (2021-12-07 10:22:15) > On Thu, Dec 02, 2021 at 02:26:58PM -0800, Stephen Boyd wrote: > > 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. > > Thanks for pushing this forward. Unfortunately I'm completely burried and > it's just not improving, so merge plan: > > - please get Greg KH to ack the bus/driver core stuff > > - please get one of the drm-misc committers we have from Google's Chromeos > team (there should be a few by now) to review&push this. Sounds like a plan. Thanks! > > Otherwise I fear this might get stuck and I'd really like to avoid that. >
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. Changes since v3 (https://lore.kernel.org/r/20211026000044.885195-1-swboyd@chromium.org): - Picked up tags - Rebased to v5.16-rc2 - Updated component.c for a few new patches there - Dropped a conversion patch - Added a conversion patch 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 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 mei: pxp: Migrate to aggregate driver component: Get rid of drm_of_component_probe() component: Remove component_master_ops and friends drivers/base/component.c | 544 ++++++++++-------- .../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 | 20 +- 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/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/misc/mei/pxp/mei_pxp.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, 772 insertions(+), 490 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> Cc: Vitaly Lubart <vitaly.lubart@intel.com> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com> base-commit: 136057256686de39cc3a07c2e39ef6bc43003ff6