Hi Laurent Am 06.03.20 um 15:22 schrieb Laurent Pinchart: > Hi Thomas, > > Thank you for the patch. > > On Thu, Mar 05, 2020 at 04:59:28PM +0100, Thomas Zimmermann wrote: >> A call to drm_simple_encoder_init() initializes an encoder without >> further functionality. It only provides the destroy callback to >> cleanup the encoder's state. Only few drivers implement more >> sophisticated encoders than that. Most drivers implement such a >> simple encoder and can use drm_simple_encoder_init() instead. >> >> The patchset converts drivers where the encoder's instance is >> embedded in a larger data structure. The driver releases the >> memory during cleanup. Each patch replaces drm_encoder_init() with >> drm_simple_encoder_init() and removes the (now unused) driver's >> encoder functions. >> >> While the patchset is fairly large, the indiviual patches are self- >> contained and can be merged independently from each other. The >> simple-encoder functionality is currently in drm-misc-next, where >> these patches could go as well. > > I've reviewed the whole series, including verifying that the few > instances of struct drm_encoder_funcs that were not declared const were > not modified somewhere to add more function pointers. > > Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Thanks for the detailed review. > > for all the patches. > > However, I'd like to note that drm_simple_encoder_init() is a bit of a > misnommer here. Several of the encoders in those drivers to implement > additional functionality. They just expose them through > drm_encoder_helper_funcs, not drm_encoder_funcs. True. It's called 'simple encoder' for the lack of a better name. It's part of the simple KMS helpers, so the name's at least consistent. OTOH I always find drm_simple_display_pipe a bad name. We can still rename the simple-encoder function without much effort. I'm open for suggestions. Best regards Thomas > >> Future directions: There's another common case where the driver >> calls kzalloc() plus drm_encoder_init(). Such drivers are not >> handled by this patchset. The plan here is to use a simple encoder >> with either managed memory allocation (once it's merged), or embed >> the encoder in a larger data structure and drop kzalloc() entirely. > > I think an even more interesting future enhancement would be to add > encoder support to the newly added drm_bridge_connector_init(), for > drivers that are fully based on bridges and don't implement any encoder > operation, neither through drm_encoder_funcs nor through > drm_encoder_helper_funcs. > >> The patchset has been compile-tested on x86-64, aarch64 and arm. >> >> Thomas Zimmermann (22): >> drm/arc: Use simple encoder >> drm/atmel-hlcdc: Use simple encoder >> drm/exynos: Use simple encoder >> drm/fsl-dcu: Use simple encoder >> drm/gma500: Use simple encoder >> drm/hisilicon/kirin: Use simple encoder >> drm/i2c/tda998x: Use simple encoder >> drm/imx: Use simple encoder >> drm/ingenic: Use simple encoder >> drm/mediatek: Use simple encoder >> drm/rcar-du: Use simple encoder >> drm/rockchip: Use simple encoder >> drm/shmobile: Use simple encoder >> drm/sun4i: Use simple encoder >> drm/tegra: Use simple encoder >> drm/tidss: Use simple encoder >> drm/tilcdc: Use simple encoder >> drm/vc4: Use simple encoder >> drm/virtgpu: Use simple encoder >> drm/vkms: Use simple encoder >> drm/writeback: Use simple encoder >> drm/zte: Use simple encoder >> >> drivers/gpu/drm/arc/arcpgu_hdmi.c | 10 +++------- >> drivers/gpu/drm/arc/arcpgu_sim.c | 8 ++------ >> .../gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c | 12 ++++-------- >> drivers/gpu/drm/drm_writeback.c | 10 +++------- >> drivers/gpu/drm/exynos/exynos_dp.c | 8 ++------ >> drivers/gpu/drm/exynos/exynos_drm_dpi.c | 8 ++------ >> drivers/gpu/drm/exynos/exynos_drm_dsi.c | 8 ++------ >> drivers/gpu/drm/exynos/exynos_drm_vidi.c | 8 ++------ >> drivers/gpu/drm/exynos/exynos_hdmi.c | 8 ++------ >> drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c | 14 +++----------- >> drivers/gpu/drm/gma500/cdv_intel_crt.c | 14 +++----------- >> drivers/gpu/drm/gma500/cdv_intel_dp.c | 16 +++------------- >> drivers/gpu/drm/gma500/cdv_intel_hdmi.c | 4 ++-- >> drivers/gpu/drm/gma500/cdv_intel_lvds.c | 17 +++-------------- >> drivers/gpu/drm/gma500/mdfld_dsi_dpi.c | 7 +++---- >> drivers/gpu/drm/gma500/mdfld_output.h | 1 - >> drivers/gpu/drm/gma500/mdfld_tmd_vid.c | 6 ------ >> drivers/gpu/drm/gma500/mdfld_tpo_vid.c | 6 ------ >> drivers/gpu/drm/gma500/oaktrail_hdmi.c | 14 ++------------ >> drivers/gpu/drm/gma500/oaktrail_lvds.c | 5 +++-- >> drivers/gpu/drm/gma500/psb_intel_drv.h | 1 - >> drivers/gpu/drm/gma500/psb_intel_lvds.c | 18 +++--------------- >> drivers/gpu/drm/gma500/tc35876x-dsi-lvds.c | 5 ----- >> drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c | 8 ++------ >> drivers/gpu/drm/i2c/tda998x_drv.c | 14 +++----------- >> drivers/gpu/drm/imx/dw_hdmi-imx.c | 8 ++------ >> drivers/gpu/drm/imx/imx-drm-core.c | 6 ------ >> drivers/gpu/drm/imx/imx-drm.h | 1 - >> drivers/gpu/drm/imx/imx-ldb.c | 8 ++------ >> drivers/gpu/drm/imx/imx-tve.c | 8 ++------ >> drivers/gpu/drm/imx/parallel-display.c | 8 ++------ >> drivers/gpu/drm/ingenic/ingenic-drm.c | 9 +++------ >> drivers/gpu/drm/mediatek/mtk_dpi.c | 14 +++----------- >> drivers/gpu/drm/mediatek/mtk_dsi.c | 14 +++----------- >> drivers/gpu/drm/rcar-du/rcar_du_encoder.c | 14 +++----------- >> .../gpu/drm/rockchip/analogix_dp-rockchip.c | 9 +++------ >> drivers/gpu/drm/rockchip/cdn-dp-core.c | 9 +++------ >> .../gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 8 ++------ >> drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 8 ++------ >> drivers/gpu/drm/rockchip/inno_hdmi.c | 8 ++------ >> drivers/gpu/drm/rockchip/rk3066_hdmi.c | 8 ++------ >> drivers/gpu/drm/rockchip/rockchip_lvds.c | 10 +++------- >> drivers/gpu/drm/rockchip/rockchip_rgb.c | 8 ++------ >> drivers/gpu/drm/shmobile/shmob_drm_crtc.c | 14 +++----------- >> drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 12 +++--------- >> drivers/gpu/drm/sun4i/sun4i_lvds.c | 12 +++--------- >> drivers/gpu/drm/sun4i/sun4i_rgb.c | 17 +++-------------- >> drivers/gpu/drm/sun4i/sun4i_tv.c | 17 +++-------------- >> drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 12 +++--------- >> drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c | 8 ++------ >> drivers/gpu/drm/tegra/drm.h | 2 -- >> drivers/gpu/drm/tegra/dsi.c | 10 +++------- >> drivers/gpu/drm/tegra/hdmi.c | 9 +++------ >> drivers/gpu/drm/tegra/output.c | 6 +----- >> drivers/gpu/drm/tegra/rgb.c | 8 ++------ >> drivers/gpu/drm/tegra/sor.c | 8 ++------ >> drivers/gpu/drm/tidss/tidss_encoder.c | 10 +++------- >> drivers/gpu/drm/tilcdc/tilcdc_external.c | 10 +++------- >> drivers/gpu/drm/tilcdc/tilcdc_panel.c | 8 ++------ >> drivers/gpu/drm/vc4/vc4_dpi.c | 8 ++------ >> drivers/gpu/drm/vc4/vc4_dsi.c | 15 +++------------ >> drivers/gpu/drm/vc4/vc4_hdmi.c | 17 ++++------------- >> drivers/gpu/drm/vc4/vc4_vec.c | 8 ++------ >> drivers/gpu/drm/virtio/virtgpu_display.c | 8 ++------ >> drivers/gpu/drm/vkms/vkms_output.c | 8 ++------ >> drivers/gpu/drm/zte/zx_hdmi.c | 8 ++------ >> drivers/gpu/drm/zte/zx_tvenc.c | 8 ++------ >> drivers/gpu/drm/zte/zx_vga.c | 8 ++------ >> 68 files changed, 151 insertions(+), 488 deletions(-) > -- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Felix Imendörffer
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