Hi Sean,
On 22/04/2024 21:45, Sean Anderson wrote:
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.
What is the base for this series? I'm having trouble applying it.
I managed to mostly apply it, but I see the board hang when I unload the
modules. I didn't debug it as it might as well be caused by my conflict
resolution.
Tomi
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
