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Message-Id: <20240422184553.3573009-1-sean.anderson@linux.dev>
Date: Mon, 22 Apr 2024 14:45:40 -0400
From: Sean Anderson <sean.anderson@...ux.dev>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
dri-devel@...ts.freedesktop.org
Cc: David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
Michal Simek <michal.simek@....com>,
Sean Anderson <sean.anderson@...ux.dev>
Subject: [PATCH v3 00/13] drm: zynqmp_dp: IRQ cleanups and debugfs support
This series cleans up the zyqnmp_dp IRQ and locking situation. Once
that's done, it adds debugfs support. The intent is to enable compliance
testing or to help debug signal-integrity issues.
Last time I discussed converting the HPD work(s) to a threaded IRQ. I
did not end up doing that for this series since the steps would be
- Add locking
- Move link retraining to a work function
- Harden the IRQ
- Merge the works into a threaded IRQ (omitted)
Which with the exception of the final step is the same as leaving those
works as-is. Conversion to a threaded IRQ can be done as a follow-up.
Changes in v3:
- Store base pointers in zynqmp_disp directly
- Don't delay work
- Convert to a hard IRQ
- Use AUX IRQs instead of polling
- Take dp->lock in zynqmp_dp_hpd_work_func
Changes in v2:
- Fix kerneldoc
- Rearrange zynqmp_dp for better padding
- Split off the HPD IRQ work into another commit
- Expand the commit message
- Document hpd_irq_work
- Document debugfs files
- Add ignore_aux_errors and ignore_hpd debugfs files to replace earlier
implicit functionality
- Attempt to fix unreproducable, spurious build warning
- Drop "Optionally ignore DPCD errors" in favor of a debugfs file
directly affecting zynqmp_dp_aux_transfer.
Sean Anderson (13):
drm: xlnx: Store base pointers in zynqmp_disp directly
drm: xlnx: Fix kerneldoc
drm: zynqmp_dp: Downgrade log level for aux retries message
drm: zynqmp_dp: Adjust training values per-lane
drm: zynqmp_dp: Rearrange zynqmp_dp for better padding
drm: zynqmp_dp: Don't delay work
drm: zynqmp_dp: Add locking
drm: zynqmp_dp: Don't retrain the link in our IRQ
drm: zynqmp_dp: Convert to a hard IRQ
drm: zynqmp_dp: Use AUX IRQs instead of polling
drm: zynqmp_dp: Split off several helper functions
drm: zynqmp_dp: Take dp->lock in zynqmp_dp_hpd_work_func
drm: zynqmp_dp: Add debugfs interface for compliance testing
Documentation/gpu/drivers.rst | 1 +
Documentation/gpu/zynqmp.rst | 149 +++++
MAINTAINERS | 1 +
drivers/gpu/drm/xlnx/zynqmp_disp.c | 44 +-
drivers/gpu/drm/xlnx/zynqmp_dp.c | 909 +++++++++++++++++++++++++---
drivers/gpu/drm/xlnx/zynqmp_dpsub.h | 1 +
drivers/gpu/drm/xlnx/zynqmp_kms.h | 4 +-
7 files changed, 1000 insertions(+), 109 deletions(-)
create mode 100644 Documentation/gpu/zynqmp.rst
--
2.35.1.1320.gc452695387.dirty
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