drm/vc4: Use common helpers for debugfs setup by the driver components.
authorEric Anholt <eric@anholt.net>
Mon, 1 Apr 2019 18:35:58 +0000 (11:35 -0700)
committerEric Anholt <eric@anholt.net>
Wed, 3 Apr 2019 19:49:13 +0000 (12:49 -0700)
commitc9be804c8c7a2d3fcd8e236407c8623be0356a01
treed320accd6c36f18105895804caf5d1850e2dca46
parentfc13d7100299d4a10fd77bfd87954b33312f796f
drm/vc4: Use common helpers for debugfs setup by the driver components.

The global list of all debugfs entries for the driver was painful: the
list couldn't see into the components' structs, so each component had
its own debugs show function to find the component, then find the
regset and dump it.  The components also had to be careful to check
that they were actually registered in vc4 before dereferencing
themselves, in case they weren't probed on a particular platform.
They routinely failed at that.

Instead, we can have the components add their debugfs callbacks to a
little list in vc4 to be registered at drm_dev_register() time, which
gets vc4_debugfs.c out of the business of knowing the whole list of
components.

Thanks to this change, dsi0 (if it existed) would register its node.

v2: Rebase on hvs_underrun addition.
v3: whitespace fixup

Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190401183559.3823-1-eric@anholt.net
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
12 files changed:
drivers/gpu/drm/vc4/vc4_bo.c
drivers/gpu/drm/vc4/vc4_crtc.c
drivers/gpu/drm/vc4/vc4_debugfs.c
drivers/gpu/drm/vc4/vc4_dpi.c
drivers/gpu/drm/vc4/vc4_drv.c
drivers/gpu/drm/vc4/vc4_drv.h
drivers/gpu/drm/vc4/vc4_dsi.c
drivers/gpu/drm/vc4/vc4_hdmi.c
drivers/gpu/drm/vc4/vc4_hvs.c
drivers/gpu/drm/vc4/vc4_txp.c
drivers/gpu/drm/vc4/vc4_v3d.c
drivers/gpu/drm/vc4/vc4_vec.c