[PATCH 00/20] Analog connector support in DC

[Timur Kristóf]

This series adds support for analog connectors to DC for DCE6-10.
There are two reasons to add this support:

1. GPUs that already use DC by default and have analog connectors.
Some Tonga and Hawaii graphics cards in fact have DVI-I connectors,
and the analog part doesn't work by default. This functionality
regressed when switching from the amdgpu legacy display code to DC.

2. GPUs that don't use amdgpu by default yet.
Currently, SI (GFX6) and CIK (GFX7) don't use amdgpu by default
yet, and missing analog connector support is cited as one of the
main reasons why not.

With this analog support added to DC, we could already fully switch
CIK discrete GPUs to use DC and switch them to the amdgpu driver.
For GFX7 APUs and SI, further fixes are needed before enabling DC.

Before starting this work, I asked Harry and Alex about how best
to do it and we agreed that we'd like to use the VBIOS to set up
the DAC. So I used the amdgpu legacy display code as a reference.
The first few commits add some minor changes to DC to prepare for
supporting analog stream and link encoders, then analog link
detection is added along with polling, and finally DAC load
detection support, which is useful for old displays and adapters.

Please let me know what you think.

Timur Kristóf (20):
  drm/amd/display: Determine DRM connector type more accurately
  drm/amd/display: Add analog bit to edid_caps
  drm/amd/display: Introduce MAX_LINK_ENCODERS
  drm/amd/display: Hook up DAC to bios_parser_encoder_control
  drm/amd/display: Add SelectCRTC_Source to BIOS parser
  drm/amd/display: Get maximum pixel clock from VBIOS
  drm/amd/display: Don't use stereo sync and audio on RGB signals
  drm/amd/display: Don't try to enable/disable HPD when unavailable
  drm/amd/display: Add concept of analog encoders
  drm/amd/display: Implement DCE analog stream encoders
  drm/amd/display: Implement DCE analog link encoders
  drm/amd/display: Support DAC in dce110_hwseq
  drm/amd/display: Add analog link detection
  drm/amd/display: Poll analog connectors
  drm/amd/display: Add DCE BIOS_SCRATCH_0 register
  drm/amd/display: Make get_support_mask_for_device_id reusable
  drm/amd/display: Add DAC_LoadDetection to BIOS parser
  drm/amd/display: Use DAC load detection on analog connectors
  drm/amd/display: Add common modes to analog displays without EDID
  drm/amdgpu: Use DC by default for Bonaire

 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c    |   1 -
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 144 +++++++--
 .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c |   5 +-
 .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c |   1 +
 .../drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c |   8 +
 .../gpu/drm/amd/display/dc/bios/bios_parser.c |  95 +++++-
 .../drm/amd/display/dc/bios/command_table.c   | 286 ++++++++++++++++++
 .../drm/amd/display/dc/bios/command_table.h   |   6 +
 .../drm/amd/display/dc/core/dc_link_enc_cfg.c |   4 +-
 .../gpu/drm/amd/display/dc/core/dc_resource.c |   8 +
 .../gpu/drm/amd/display/dc/dc_bios_types.h    |   9 +
 drivers/gpu/drm/amd/display/dc/dc_types.h     |   5 +
 .../drm/amd/display/dc/dce/dce_link_encoder.c | 100 ++++++
 .../drm/amd/display/dc/dce/dce_link_encoder.h |  21 +-
 .../amd/display/dc/dce/dce_stream_encoder.c   |  14 +
 .../amd/display/dc/dce/dce_stream_encoder.h   |   5 +
 .../amd/display/dc/hwss/dce110/dce110_hwseq.c |  75 ++++-
 .../gpu/drm/amd/display/dc/inc/core_types.h   |   8 +-
 .../gpu/drm/amd/display/dc/inc/hw/hw_shared.h |  24 ++
 .../drm/amd/display/dc/inc/hw/link_encoder.h  |   2 +
 drivers/gpu/drm/amd/display/dc/inc/resource.h |   1 +
 .../amd/display/dc/link/hwss/link_hwss_dio.c  |  19 +-
 .../drm/amd/display/dc/link/link_detection.c  | 123 +++++++-
 .../gpu/drm/amd/display/dc/link/link_dpms.c   |   9 +-
 .../drm/amd/display/dc/link/link_factory.c    |  31 ++
 .../dc/resource/dce100/dce100_resource.c      |  28 +-
 .../dc/resource/dce110/dce110_resource.c      |   2 +
 .../dc/resource/dce112/dce112_resource.c      |   2 +
 .../dc/resource/dce120/dce120_resource.c      |   1 +
 .../dc/resource/dce60/dce60_resource.c        |  26 +-
 .../dc/resource/dce80/dce80_resource.c        |  23 +-
 .../amd/display/include/bios_parser_types.h   |  11 +-
 .../display/include/grph_object_ctrl_defs.h   |   1 +
 .../drm/amd/display/include/signal_types.h    |   5 +
 34 files changed, 1027 insertions(+), 76 deletions(-)

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2.50.1