Re: [PATCH v2 00/28] drm/bridge: Consolidate initialization

[Neil Armstrong]

Hi Mihail,

On 04/12/2019 12:48, Mihail Atanassov wrote:
> Hi all,
> 
> I've dropped the fun parts of this series since they need more work, but
> figured drm_bridge_init() as a concept is still valuable on its own (and
> I think I'll need it to roll out device links for registered bridges),
> so here goes.
> 
> v2:
>  - expanded commit messages and added some extra bridge-related
>    documentation (Daniel)
>  - dropped v1 patches 29 and 30: 29 needs more work, and 30 depends on
>    it
>  - added all remaining drm_bridge implementers, found by searching for
>    drm_bridge_funcs which is mandatory for any bridge; new uses in
>    patches 3, 27, and 28 (Sam)
>  - due to the above, I've decided to squash all analogix changes into
>    one patch
> 
> ---
> v1 [https://patchwork.freedesktop.org/series/70039/] cover text below:
> 
> This series adds device links support to drm_bridge. The motivation
> behind it is that a drm_bridge in a module could get removed under the
> feet of the bridge user without warning, so we need a way to remove and
> reprobe the client as needed to avoid peering into the void.
> 
> 1: Add a drm_bridge_init() function which wraps all initialisation of
> the structure prior to calling drm_bridge_add().
> 
> 2-26,28: Apply the drm_bridge_init() refactor to every bridge that uses
> drm_bridge_add().
> 
> 27: Minor cleanup in rcar-du.
> 
> 29: Add of_drm_find_bridge_devlink() which functions the same as
> of_drm_find_bridge() plus adds a device device link from the owning
> drm_device to the bridge device.
> 
> 30: As a motivating example, convert komeda to exclusively use
> drm_bridge for its pipe outputs; this isn't a regression in usability
> any more since device links bring the same automatic remove/reprobe
> feature as components.
> 
> Mihail Atanassov (28):
>   drm: Introduce drm_bridge_init()
>   drm/bridge: adv7511: Use drm_bridge_init()
>   drm/bridge/analogix: Use drm_bridge_init()
>   drm/bridge: cdns: Use drm_bridge_init()
>   drm/bridge: dumb-vga-dac: Use drm_bridge_init()
>   drm/bridge: lvds-encoder: Use drm_bridge_init()
>   drm/bridge: megachips-stdpxxxx-ge-b850v3-fw: Use drm_bridge_init()
>   drm/bridge: nxp-ptn3460: Use drm_bridge_init()
>   drm/bridge: panel: Use drm_bridge_init()
>   drm/bridge: ps8622: Use drm_bridge_init()
>   drm/bridge: sii902x: Use drm_bridge_init()
>   gpu: drm: bridge: sii9234: Use drm_bridge_init()
>   drm/bridge: sil_sii8620: Use drm_bridge_init()
>   drm/bridge: dw-hdmi: Use drm_bridge_init()
>   drm/bridge/synopsys: dsi: Use drm_bridge_init()
>   drm/bridge: tc358764: Use drm_bridge_init()
>   drm/bridge: tc358767: Use drm_bridge_init()
>   drm/bridge: thc63: Use drm_bridge_init()
>   drm/bridge: ti-sn65dsi86: Use drm_bridge_init()
>   drm/bridge: ti-tfp410: Use drm_bridge_init()
>   drm/exynos: mic: Use drm_bridge_init()
>   drm/i2c: tda998x: Use drm_bridge_init()
>   drm/mcde: dsi: Use drm_bridge_init()
>   drm/mediatek: hdmi: Use drm_bridge_init()
>   drm: rcar-du: lvds: Use drm_bridge_init()
>   drm: rcar-du: lvds: Don't set drm_bridge private pointer
>   drm/sti: Use drm_bridge_init()
>   drm/msm: Use drm_bridge_init()
> 
>  drivers/gpu/drm/bridge/adv7511/adv7511_drv.c  |  5 ++-
>  .../drm/bridge/analogix/analogix-anx6345.c    |  5 ++-
>  .../drm/bridge/analogix/analogix-anx78xx.c    |  8 ++---
>  .../drm/bridge/analogix/analogix_dp_core.c    |  5 ++-
>  drivers/gpu/drm/bridge/cdns-dsi.c             |  4 +--
>  drivers/gpu/drm/bridge/dumb-vga-dac.c         |  6 ++--
>  drivers/gpu/drm/bridge/lvds-encoder.c         |  7 ++--
>  .../bridge/megachips-stdpxxxx-ge-b850v3-fw.c  |  4 +--
>  drivers/gpu/drm/bridge/nxp-ptn3460.c          |  4 +--
>  drivers/gpu/drm/bridge/panel.c                |  7 ++--
>  drivers/gpu/drm/bridge/parade-ps8622.c        |  3 +-
>  drivers/gpu/drm/bridge/sii902x.c              |  5 ++-
>  drivers/gpu/drm/bridge/sii9234.c              |  3 +-
>  drivers/gpu/drm/bridge/sil-sii8620.c          |  3 +-
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c     |  7 ++--
>  drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c |  7 ++--
>  drivers/gpu/drm/bridge/tc358764.c             |  4 +--
>  drivers/gpu/drm/bridge/tc358767.c             |  3 +-
>  drivers/gpu/drm/bridge/thc63lvd1024.c         |  7 ++--
>  drivers/gpu/drm/bridge/ti-sn65dsi86.c         |  5 ++-
>  drivers/gpu/drm/bridge/ti-tfp410.c            |  5 ++-
>  drivers/gpu/drm/drm_bridge.c                  | 34 ++++++++++++++++++-
>  drivers/gpu/drm/exynos/exynos_drm_mic.c       |  8 +----
>  drivers/gpu/drm/i2c/tda998x_drv.c             |  6 +---
>  drivers/gpu/drm/mcde/mcde_dsi.c               |  3 +-
>  drivers/gpu/drm/mediatek/mtk_hdmi.c           |  4 +--
>  drivers/gpu/drm/msm/dsi/dsi_manager.c         |  4 +--
>  drivers/gpu/drm/msm/edp/edp_bridge.c          |  3 +-
>  drivers/gpu/drm/msm/hdmi/hdmi_bridge.c        |  4 +--
>  drivers/gpu/drm/rcar-du/rcar_lvds.c           |  5 ++-
>  drivers/gpu/drm/sti/sti_dvo.c                 |  4 +--
>  drivers/gpu/drm/sti/sti_hda.c                 |  3 +-
>  drivers/gpu/drm/sti/sti_hdmi.c                |  3 +-
>  include/drm/drm_bridge.h                      | 15 +++++++-
>  34 files changed, 100 insertions(+), 103 deletions(-)
> 

Can you check it doesn't collides with Boris 1-7 of "drm: Add support for bus-format negotiation" patches he just pushed on drm-misc-next ?

Neil