[PATCH v2 00/25] drm/dma-helper: Add dedicated fbdev emulation

[Thomas Zimmermann]

Merged into drm-misc-next. Thanks a lot for reviews and comments.

Am 13.03.23 um 16:51 schrieb Thomas Zimmermann:
> Add fbdev emulation that is optimized for DMA helpers, as used by most
> drivers. It operates directly on GEM DMA buffers in system memory.
> Memory pages are mmap'ed directly to userspace. No implicit shadow
> buffers need to be allocated; as can happen with the generic fbdev
> emulation. Convert drivers that fulfil the requirements.
> 
> Tested with fbcon and IGT on vc4.
> 
> Future direction: providing a dedicated fbdev emulation for GEM DMA
> helpers will allow us to remove this case from the generic fbdev code.
> The latter can then be simplified.
> 
> v2:
> 	* update mcde and pl111 as well (Linus)
> 
> Linus Walleij (1):
>    drm/mcde: Do not use dirty GEM FB handling
> 
> Thomas Zimmermann (24):
>    drm/fbdev-dma: Implement fbdev emulation for GEM DMA helpers
>    arm/hdlcd: Use GEM DMA fbdev emulation
>    arm/malidp: Use GEM DMA fbdev emulation
>    drm/aspeed: Use GEM DMA fbdev emulation
>    drm/atmel-hlcdc: Use GEM DMA fbdev emulation
>    drm/fsl-dcu: Use GEM DMA fbdev emulation
>    drm/imx/dcss: Use GEM DMA fbdev emulation
>    drm/imx: Use GEM DMA fbdev emulation
>    drm/kmb: Use GEM DMA fbdev emulation
>    drm/logicvc: Use GEM DMA fbdev emulation
>    drm/meson: Use GEM DMA fbdev emulation
>    drm/mxsfb/lcdif: Use GEM DMA fbdev emulation
>    drm/mxsfb: Use GEM DMA fbdev emulation
>    drm/sti: Use GEM DMA fbdev emulation
>    drm/stm: Use GEM DMA fbdev emulation
>    drm/sun4i: Use GEM DMA fbdev emulation
>    drm/tidss: Use GEM DMA fbdev emulation
>    drm/tilcdc: Use GEM DMA fbdev emulation
>    drm/arcpgu: Use GEM DMA fbdev emulation
>    drm/tve200: Use GEM DMA fbdev emulation
>    drm/vc4: Use GEM DMA fbdev emulation
>    drm/xlnx: Use GEM DMA fbdev emulation
>    drm/mcde: Use GEM DMA fbdev emulation
>    drm/pl111: Use GEM DMA fbdev emulation
> 
>   drivers/gpu/drm/Makefile                     |   1 +
>   drivers/gpu/drm/arm/hdlcd_drv.c              |   4 +-
>   drivers/gpu/drm/arm/malidp_drv.c             |   4 +-
>   drivers/gpu/drm/aspeed/aspeed_gfx_drv.c      |   4 +-
>   drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c |   4 +-
>   drivers/gpu/drm/drm_fbdev_dma.c              | 275 +++++++++++++++++++
>   drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c    |   4 +-
>   drivers/gpu/drm/imx/dcss/dcss-kms.c          |   4 +-
>   drivers/gpu/drm/imx/ipuv3/imx-drm-core.c     |   4 +-
>   drivers/gpu/drm/kmb/kmb_drv.c                |   4 +-
>   drivers/gpu/drm/logicvc/logicvc_drm.c        |   4 +-
>   drivers/gpu/drm/mcde/mcde_drv.c              |   6 +-
>   drivers/gpu/drm/meson/meson_drv.c            |   4 +-
>   drivers/gpu/drm/mxsfb/lcdif_drv.c            |   4 +-
>   drivers/gpu/drm/mxsfb/mxsfb_drv.c            |   4 +-
>   drivers/gpu/drm/pl111/pl111_drv.c            |   4 +-
>   drivers/gpu/drm/sti/sti_drv.c                |   4 +-
>   drivers/gpu/drm/stm/drv.c                    |   4 +-
>   drivers/gpu/drm/sun4i/sun4i_drv.c            |   4 +-
>   drivers/gpu/drm/tidss/tidss_drv.c            |   4 +-
>   drivers/gpu/drm/tilcdc/tilcdc_drv.c          |   4 +-
>   drivers/gpu/drm/tiny/arcpgu.c                |   4 +-
>   drivers/gpu/drm/tve200/tve200_drv.c          |   4 +-
>   drivers/gpu/drm/vc4/vc4_drv.c                |   4 +-
>   drivers/gpu/drm/xlnx/zynqmp_kms.c            |   4 +-
>   include/drm/drm_fbdev_dma.h                  |  15 +
>   26 files changed, 338 insertions(+), 47 deletions(-)
>   create mode 100644 drivers/gpu/drm/drm_fbdev_dma.c
>   create mode 100644 include/drm/drm_fbdev_dma.h
> 
> 
> base-commit: b21ced77ae1dbc3d8b01d3aef3c99bba7377a69b
> prerequisite-patch-id: 0aa359f6144c4015c140c8a6750be19099c676fb
> prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24
> prerequisite-patch-id: 3f204510fcbf9530d6540bd8e6128cce598988b6
> prerequisite-patch-id: 75f2ebf12693f23508f00d574b2b57488723e474
> prerequisite-patch-id: 718531bf5cf15716834cfaf3008ea0e2366ec927
> prerequisite-patch-id: a793aa283cf41f290d970404881f24bffc48caff
> prerequisite-patch-id: e74f259d1923247a74d5bf7d996afb0e6ca01883
> prerequisite-patch-id: a1d12b9548110b1f5e9aa3803b21e2a7f9f8c19d
> prerequisite-patch-id: 033f10da72f10d82f113a5066a3b3a7ff91d13aa
> prerequisite-patch-id: 976264fafbd69d0996209a90a3d546d9be3f3779
> prerequisite-patch-id: 617c74af5e16717898a23ced9c8badfff1e0ade7
> prerequisite-patch-id: 5e0cfa9c81aa7ceb2cc48c5cbc9934496251fac4
> prerequisite-patch-id: 13594c3cc8102960bb195bc7f572fefba8eb19d7
> prerequisite-patch-id: 99d9da7e08369050d135c23d32dead811bb9cf97
> prerequisite-patch-id: 833f9d8341a287961ee653b04730da57ce987b06
> prerequisite-patch-id: 5d5c9caaf9489a6c2f688d632a57a0fb65fcb5f7
> prerequisite-patch-id: b64758ecd64ec0c0acd96d0766ba891378c5c539
> prerequisite-patch-id: 37a7d3e9fb3e4e2b7ebeac3f77da6610f12beea3
> prerequisite-patch-id: 99073429dafdc98cdd31464ce28e795696a149f9
> prerequisite-patch-id: c2247eca44927569cd2b6d9f370195965346adb4

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev
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