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[v3,0/3] drm/panfrost: Fix poweroff and sync IRQs for suspend

Message ID 20231201104027.35273-1-angelogioacchino.delregno@collabora.com (mailing list archive)
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Series drm/panfrost: Fix poweroff and sync IRQs for suspend | expand

Message

AngeloGioacchino Del Regno Dec. 1, 2023, 10:40 a.m. UTC 
Changes in v3:
 - Removed useless GPU_INT_CLEAR write in suspend path
 - Changed to clear suspend bits in job/mmu reset path

This series contains a fast fix for the basic GPU poweroff functionality
and goes further by implementing interrupt masking and synchronization
before suspend.

For more information, please look at the conversation at [1], which
explains the regression seen with the poweroff commit and the initial
approaches taken to solve that.

Cheers!

[1]: https://lore.kernel.org/all/20231123095320.41433-1-angelogioacchino.delregno@collabora.com/

AngeloGioacchino Del Regno (3):
  drm/panfrost: Ignore core_mask for poweroff and disable PWRTRANS irq
  drm/panfrost: Add gpu_irq, mmu_irq to struct panfrost_device
  drm/panfrost: Synchronize and disable interrupts before powering off

 drivers/gpu/drm/panfrost/panfrost_device.c |  3 +++
 drivers/gpu/drm/panfrost/panfrost_device.h |  9 +++++++
 drivers/gpu/drm/panfrost/panfrost_gpu.c    | 28 ++++++++++++++-------
 drivers/gpu/drm/panfrost/panfrost_gpu.h    |  1 +
 drivers/gpu/drm/panfrost/panfrost_job.c    | 20 ++++++++++++---
 drivers/gpu/drm/panfrost/panfrost_job.h    |  1 +
 drivers/gpu/drm/panfrost/panfrost_mmu.c    | 29 ++++++++++++++++------
 drivers/gpu/drm/panfrost/panfrost_mmu.h    |  1 +
 8 files changed, 72 insertions(+), 20 deletions(-)