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* [PATCH v6 00/24] Associate ddc adapters with connectors
@ 2019-07-26 17:22 Andrzej Pietrasiewicz
  2019-07-26 17:22 ` [PATCH v6 02/24] drm: Add drm_connector_init() variant with ddc Andrzej Pietrasiewicz
                   ` (20 more replies)
  0 siblings, 21 replies; 103+ messages in thread
From: Andrzej Pietrasiewicz @ 2019-07-26 17:22 UTC (permalink / raw)
  To: dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW
  Cc: Y.C. Chen, Heiko Stübner, Sam Ravnborg, Neil Armstrong,
	David Airlie, Ramalingam C, Joonas Lahtinen, Liviu Dudau,
	Douglas Anderson, Andrzej Hajda, Thierry Reding,
	Laurent Pinchart, Benjamin Gaignard,
	kernel-ZGY8ohtN/8qB+jHODAdFcQ, Fabio Estevam,
	Ville Syrjälä,
	David (ChunMing) Zhou, linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA,
	Joonyoung Shim, Jyri Sarha, Vincent Abriou

It is difficult for a user to know which of the i2c adapters is for which
drm connector. This series addresses this problem.

The idea is to have a symbolic link in connector's sysfs directory, e.g.:

ls -l /sys/class/drm/card0-HDMI-A-1/ddc
lrwxrwxrwx 1 root root 0 Jun 24 10:42 /sys/class/drm/card0-HDMI-A-1/ddc \
	-> ../../../../soc/13880000.i2c/i2c-2

The user then knows that their card0-HDMI-A-1 uses i2c-2 and can e.g. run
ddcutil:

ddcutil -b 2 getvcp 0x10
VCP code 0x10 (Brightness): current value =    90, max value =   100

The first patch in the series adds struct i2c_adapter pointer to struct
drm_connector. If the field is used by a particular driver, then an
appropriate symbolic link is created by the generic code, which is also added
by this patch.

Patch 2 adds a new variant of drm_connector_init(), see the changelog
below.

Patches 3..24 are examples of how to convert a driver to this new scheme.

v1..v2:

- used fixed name "ddc" for the symbolic link in order to make it easy for
userspace to find the i2c adapter

v2..v3:

- converted as many drivers as possible.

v3..v4:

- added Reviewed-by for patch 01/23
- moved "ddc" field assignment to before drm_connector_init() is called
in msm, vc4, sti, mgag200, ast, amdgpu, radeon
- simplified the code in amdgpu and radeon at the expense of some lines
exceeding 80 characters as per Alex Deucher's suggestion
- added i915

v4..v5:

- changed "include <linux/i2c.h>" to "struct i2c_adapter;"
in drm_connector.h, consequently, added "include <linux/i2c.h>"
in drm_sysfs.c.
- added "drm_connector_init_with_ddc()" variant to ensure that the ddc
field of drm_connector is preserved accross its invocation
- accordingly changed invocations of drm_connector_init() in the
touched drivers to use the new variant

v5..v6:

- improved subject line of patch 1
- added kernel-doc for drm_connector_init_with_ddc()
- improved kernel-doc for the ddc field of struct drm_connector
- added Reviewed-by in patches 17 and 18
- added Acked-by in patch 2
- made the ownership of ddc i2c_adapter explicit in all patches,
this made the affected patches much simpler

@Benjamin
@Shawn

There were your Acked-by or Reviewed-by for some patches in v4, but now
that the patches use the newly added function I'm not sure I can still
include those tags without you actually confirming. Can I? Or can you
please re-review? 

TODO: nouveau, gma500, omapdrm, panel-simple - if applicable.
Other drivers are either already converted or don't mention neither
"ddc" nor "i2c_adapter".

Andrzej Pietrasiewicz (24):
  drm: Add ddc link in sysfs created by drm_connector
  drm: Add drm_connector_init() variant with ddc
  drm/exynos: Provide ddc symlink in connector's sysfs
  drm: rockchip: Provide ddc symlink in rk3066_hdmi sysfs directory
  drm: rockchip: Provide ddc symlink in inno_hdmi sysfs directory
  drm/msm/hdmi: Provide ddc symlink in hdmi connector sysfs directory
  drm/sun4i: hdmi: Provide ddc symlink in sun4i hdmi connector sysfs
    directory
  drm/mediatek: Provide ddc symlink in hdmi connector sysfs directory
  drm/tegra: Provide ddc symlink in output connector sysfs directory
  drm/imx: imx-ldb: Provide ddc symlink in connector's sysfs
  drm/imx: imx-tve: Provide ddc symlink in connector's sysfs
  drm/vc4: Provide ddc symlink in connector sysfs directory
  drm: zte: Provide ddc symlink in hdmi connector sysfs directory
  drm: zte: Provide ddc symlink in vga connector sysfs directory
  drm/tilcdc: Provide ddc symlink in connector sysfs directory
  drm: sti: Provide ddc symlink in hdmi connector sysfs directory
  drm/mgag200: Provide ddc symlink in connector sysfs directory
  drm/ast: Provide ddc symlink in connector sysfs directory
  drm/bridge: dumb-vga-dac: Provide ddc symlink in connector sysfs
    directory
  drm/bridge: dw-hdmi: Provide ddc symlink in connector sysfs directory
  drm/bridge: ti-tfp410: Provide ddc symlink in connector sysfs
    directory
  drm/amdgpu: Provide ddc symlink in connector sysfs directory
  drm/radeon: Provide ddc symlink in connector sysfs directory
  drm/i915: Provide ddc symlink in hdmi connector sysfs directory

 .../gpu/drm/amd/amdgpu/amdgpu_connectors.c    |  96 ++++++++----
 drivers/gpu/drm/ast/ast_mode.c                |  13 +-
 drivers/gpu/drm/bridge/dumb-vga-dac.c         |   6 +-
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c     |   6 +-
 drivers/gpu/drm/bridge/ti-tfp410.c            |   6 +-
 drivers/gpu/drm/drm_connector.c               |  35 +++++
 drivers/gpu/drm/drm_sysfs.c                   |   8 +
 drivers/gpu/drm/exynos/exynos_hdmi.c          |   6 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c     |  12 +-
 drivers/gpu/drm/imx/imx-ldb.c                 |   7 +-
 drivers/gpu/drm/imx/imx-tve.c                 |   6 +-
 drivers/gpu/drm/mediatek/mtk_hdmi.c           |   7 +-
 drivers/gpu/drm/mgag200/mgag200_mode.c        |  13 +-
 drivers/gpu/drm/msm/hdmi/hdmi_connector.c     |   6 +-
 drivers/gpu/drm/radeon/radeon_connectors.c    | 142 +++++++++++++-----
 drivers/gpu/drm/rockchip/inno_hdmi.c          |   6 +-
 drivers/gpu/drm/rockchip/rk3066_hdmi.c        |   7 +-
 drivers/gpu/drm/sti/sti_hdmi.c                |   6 +-
 drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c        |   7 +-
 drivers/gpu/drm/tegra/hdmi.c                  |   7 +-
 drivers/gpu/drm/tegra/sor.c                   |   7 +-
 drivers/gpu/drm/tilcdc/tilcdc_tfp410.c        |   6 +-
 drivers/gpu/drm/vc4/vc4_hdmi.c                |  12 +-
 drivers/gpu/drm/zte/zx_hdmi.c                 |   6 +-
 drivers/gpu/drm/zte/zx_vga.c                  |   6 +-
 include/drm/drm_connector.h                   |  18 +++
 26 files changed, 336 insertions(+), 121 deletions(-)

-- 
2.17.1

_______________________________________________
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Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno

^ permalink raw reply	[flat|nested] 103+ messages in thread

end of thread, other threads:[~2019-11-08  0:25 UTC | newest]

Thread overview: 103+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-07-26 17:22 [PATCH v6 00/24] Associate ddc adapters with connectors Andrzej Pietrasiewicz
2019-07-26 17:22 ` [PATCH v6 02/24] drm: Add drm_connector_init() variant with ddc Andrzej Pietrasiewicz
2019-07-26 17:22 ` [PATCH v6 04/24] drm: rockchip: Provide ddc symlink in rk3066_hdmi sysfs directory Andrzej Pietrasiewicz
2019-07-26 17:22 ` [PATCH v6 05/24] drm: rockchip: Provide ddc symlink in inno_hdmi " Andrzej Pietrasiewicz
2019-07-26 17:23 ` [PATCH v6 06/24] drm/msm/hdmi: Provide ddc symlink in hdmi connector " Andrzej Pietrasiewicz
2019-07-26 17:23 ` [PATCH v6 08/24] drm/mediatek: " Andrzej Pietrasiewicz
2019-07-26 17:23 ` [PATCH v6 09/24] drm/tegra: Provide ddc symlink in output " Andrzej Pietrasiewicz
2019-07-26 17:23 ` [PATCH v6 12/24] drm/vc4: Provide ddc symlink in " Andrzej Pietrasiewicz
2019-07-26 17:23 ` [PATCH v6 13/24] drm: zte: Provide ddc symlink in hdmi " Andrzej Pietrasiewicz
2019-07-26 17:23 ` [PATCH v6 15/24] drm/tilcdc: Provide ddc symlink in " Andrzej Pietrasiewicz
2019-07-26 17:23 ` [PATCH v6 16/24] drm: sti: Provide ddc symlink in hdmi " Andrzej Pietrasiewicz
     [not found]   ` <510765aff8ef99683aa2da48bd08004376b1980a.1564161140.git.andrzej.p-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2019-07-30 12:36     ` Benjamin Gaignard
2019-07-26 17:23 ` [PATCH v6 17/24] drm/mgag200: Provide ddc symlink in " Andrzej Pietrasiewicz
2019-07-26 17:23 ` [PATCH v6 19/24] drm/bridge: dumb-vga-dac: " Andrzej Pietrasiewicz
     [not found]   ` <ebb75e71b8b7c8d65d54a947a03fd21b8969fb3a.1564161140.git.andrzej.p-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2019-07-30 12:28     ` Neil Armstrong
2019-08-08  3:42     ` Guenter Roeck
2019-08-08  3:42       ` Guenter Roeck
2019-08-13  9:33       ` Geert Uytterhoeven
2019-08-13  9:33         ` Geert Uytterhoeven
2019-07-26 17:23 ` [PATCH v6 21/24] drm/bridge: ti-tfp410: " Andrzej Pietrasiewicz
     [not found]   ` <3b61da77a6456805db0deffe6d1a2343dd784730.1564161140.git.andrzej.p-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2019-07-30 12:30     ` Neil Armstrong
2019-07-26 17:23 ` [PATCH v6 22/24] drm/amdgpu: " Andrzej Pietrasiewicz
2019-07-26 19:28   ` Alex Deucher
     [not found]     ` <CADnq5_O1B59Q+68fJgtf_bn_=WQ9yrVPq-V5tL1VQ3+vzgf1Zw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-07-26 19:42       ` Andrzej Pietrasiewicz
2019-07-26 19:42         ` Andrzej Pietrasiewicz
     [not found]         ` <038809c7-e664-e365-a778-03bc11299193-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2019-07-26 20:00           ` Alex Deucher
2019-07-26 20:00             ` Alex Deucher
2019-07-26 17:23 ` [PATCH v6 23/24] drm/radeon: " Andrzej Pietrasiewicz
2019-07-26 19:26   ` Alex Deucher
2019-07-26 18:24 ` ✗ Fi.CI.CHECKPATCH: warning for Associate ddc adapters with connectors (rev3) Patchwork
2019-07-26 18:35 ` [PATCH v6 00/24] Associate ddc adapters with connectors Sam Ravnborg
2019-07-26 18:55   ` Review required [Was: Associate ddc adapters with connectors] Sam Ravnborg
2019-07-26 18:55     ` Sam Ravnborg
     [not found]     ` <20190726185538.GD14981-uyr5N9Q2VtJg9hUCZPvPmw@public.gmane.org>
2019-07-31  8:00       ` Neil Armstrong
2019-07-31  8:00         ` Neil Armstrong
2019-07-31  8:00         ` Neil Armstrong
2019-07-31 10:40         ` Sam Ravnborg
2019-07-31 10:40           ` Sam Ravnborg
2019-07-31 10:40           ` Sam Ravnborg
2019-07-31 13:10           ` Andrzej Pietrasiewicz
2019-07-31 13:10             ` Andrzej Pietrasiewicz
2019-07-31 13:10             ` Andrzej Pietrasiewicz
     [not found]             ` <959cf323-c6b9-895b-592c-81c52aacae6e-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2019-07-31 14:22               ` Neil Armstrong
2019-07-31 14:22                 ` Neil Armstrong
2019-07-31 14:22                 ` Neil Armstrong
     [not found]                 ` <ce68a0df-1719-7b53-b0ed-89caa9afc4a0-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
2019-07-31 15:32                   ` Neil Armstrong
2019-07-31 15:32                     ` Neil Armstrong
2019-07-31 15:32                     ` Neil Armstrong
2019-07-31 16:58                     ` [PATCH 00/13] Next round of associating ddc adapters with connectors Andrzej Pietrasiewicz
2019-07-31 16:58                       ` [PATCH 02/13] drm/radeon: Eliminate possible use of an uninitialized variable Andrzej Pietrasiewicz
     [not found]                         ` <cfff357a07bfa572baad058947f281b7095e1794.1564591626.git.andrzej.p-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2019-08-01 12:15                           ` Neil Armstrong
2019-08-01 12:15                             ` Neil Armstrong
2019-08-01 12:15                             ` Neil Armstrong
2019-08-01 16:36                             ` [PATCH] drm/radeon: Provide ddc symlink in connector sysfs directory Andrzej Pietrasiewicz
2019-08-01 16:36                               ` Andrzej Pietrasiewicz
2019-07-31 16:58                       ` [PATCH 10/13] drm: zte: Provide ddc symlink in hdmi " Andrzej Pietrasiewicz
     [not found]                       ` <cover.1564591626.git.andrzej.p-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2019-07-31 16:58                         ` [PATCH 01/13] drm/amdgpu: Provide ddc symlink in dm connector's " Andrzej Pietrasiewicz
2019-07-31 16:58                         ` [PATCH 03/13] drm/exynos: Provide ddc symlink in connector's sysfs Andrzej Pietrasiewicz
     [not found]                           ` <613c1c09ff7db5be60ef86f930b45b3f56b4838d.1564591626.git.andrzej.p-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2019-11-08  0:22                             ` Inki Dae
2019-11-08  0:22                               ` Inki Dae
2019-11-08  0:22                               ` [Intel-gfx] " Inki Dae
2019-11-08  0:22                               ` Inki Dae
2019-11-08  0:22                               ` Inki Dae
2019-07-31 16:58                         ` [PATCH 04/13] drm: rockchip: Provide ddc symlink in rk3066_hdmi sysfs directory Andrzej Pietrasiewicz
2019-08-06  8:36                           ` Heiko Stuebner
2019-08-06  8:36                             ` Heiko Stuebner
2019-08-06  8:36                             ` Heiko Stuebner
2019-07-31 16:58                         ` [PATCH 05/13] drm: rockchip: Provide ddc symlink in inno_hdmi " Andrzej Pietrasiewicz
2019-08-06  8:36                           ` Heiko Stuebner
2019-08-06  8:36                             ` Heiko Stuebner
2019-08-06  8:36                             ` Heiko Stuebner
2019-07-31 16:58                         ` [PATCH 06/13] drm/msm/hdmi: Provide ddc symlink in hdmi connector " Andrzej Pietrasiewicz
2019-07-31 16:58                         ` [PATCH 07/13] drm/mediatek: " Andrzej Pietrasiewicz
2019-08-01  9:06                           ` Philipp Zabel
2019-07-31 16:58                         ` [PATCH 08/13] drm/tegra: Provide ddc symlink in output " Andrzej Pietrasiewicz
2019-07-31 16:58                         ` [PATCH 09/13] drm/vc4: Provide ddc symlink in " Andrzej Pietrasiewicz
2019-07-31 16:58                         ` [PATCH 11/13] drm: zte: Provide ddc symlink in vga " Andrzej Pietrasiewicz
2019-07-31 16:58                         ` [PATCH 12/13] drm/tilcdc: Provide ddc symlink in " Andrzej Pietrasiewicz
     [not found]                           ` <b8faad34102a91698b55dfc1ce02b1a90fda5e44.1564591626.git.andrzej.p-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2019-08-05  8:32                             ` Jyri Sarha
2019-07-31 16:58                       ` [PATCH 13/13] drm/i915: Provide ddc symlink in hdmi " Andrzej Pietrasiewicz
2019-07-31 17:16                     ` ✗ Fi.CI.CHECKPATCH: warning for series starting with [01/13] drm/amdgpu: Provide ddc symlink in dm connector's " Patchwork
2019-07-31 17:19                     ` ✗ Fi.CI.SPARSE: " Patchwork
2019-08-01 14:54                     ` ✗ Fi.CI.BAT: failure " Patchwork
2019-07-26 18:50 ` ✓ Fi.CI.BAT: success for Associate ddc adapters with connectors (rev3) Patchwork
2019-07-28  6:10 ` ✓ Fi.CI.IGT: " Patchwork
     [not found] ` <cover.1564161140.git.andrzej.p-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2019-07-26 17:22   ` [PATCH v6 01/24] drm: Add ddc link in sysfs created by drm_connector Andrzej Pietrasiewicz
     [not found]     ` <d470def6cd661b777faeee67b5838a4623c4010e.1564161140.git.andrzej.p-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2019-08-04 12:04       ` Laurent Pinchart
2019-08-04 12:27         ` Laurent Pinchart
2019-07-26 17:22   ` [PATCH v6 03/24] drm/exynos: Provide ddc symlink in connector's sysfs Andrzej Pietrasiewicz
2019-07-26 17:23   ` [PATCH v6 07/24] drm/sun4i: hdmi: Provide ddc symlink in sun4i hdmi connector sysfs directory Andrzej Pietrasiewicz
2019-07-27 10:37     ` Maxime Ripard
2019-07-26 17:23   ` [PATCH v6 10/24] drm/imx: imx-ldb: Provide ddc symlink in connector's sysfs Andrzej Pietrasiewicz
2019-07-29  9:20     ` Philipp Zabel
2019-07-26 17:23   ` [PATCH v6 11/24] drm/imx: imx-tve: " Andrzej Pietrasiewicz
2019-07-29  9:20     ` Philipp Zabel
2019-07-26 17:23   ` [PATCH v6 14/24] drm: zte: Provide ddc symlink in vga connector sysfs directory Andrzej Pietrasiewicz
2019-07-26 17:23   ` [PATCH v6 18/24] drm/ast: Provide ddc symlink in " Andrzej Pietrasiewicz
2019-07-26 17:23   ` [PATCH v6 20/24] drm/bridge: dw-hdmi: " Andrzej Pietrasiewicz
     [not found]     ` <4bcf0f154c683c9787fa34f911ebc52de6b4a7a1.1564161140.git.andrzej.p-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
2019-07-26 19:18       ` Jernej Škrabec
2019-07-26 17:23   ` [PATCH v6 24/24] drm/i915: Provide ddc symlink in hdmi " Andrzej Pietrasiewicz
2019-07-30 15:01   ` [PATCH v6 00/24] Associate ddc adapters with connectors Emil Velikov
2019-08-04 12:36     ` Laurent Pinchart
2019-08-04 12:33 ` Laurent Pinchart

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