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From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>
To:     boris.brezillon@collabora.com
Cc:     robh@kernel.org, steven.price@arm.com,
        maarten.lankhorst@linux.intel.com, mripard@kernel.org,
        tzimmermann@suse.de, airlied@gmail.com, daniel@ffwll.ch,
        angelogioacchino.delregno@collabora.com,
        dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
        kernel@collabora.com, m.szyprowski@samsung.com,
        krzysztof.kozlowski@linaro.org
Subject: [PATCH v4 0/3] drm/panfrost: Fix poweroff and sync IRQs for suspend
Date:   Mon,  4 Dec 2023 12:42:12 +0100
Message-ID: <20231204114215.54575-1-angelogioacchino.delregno@collabora.com>
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Changes in v4:
 - Added checks for is_suspended bits in hardirqs
 - Added GPU suspended bit (and handling of it)
 - Reordered panfrost_drv_comp_bits entries
 - Commit description fixes

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 | 10 ++++++
 drivers/gpu/drm/panfrost/panfrost_gpu.c    | 40 ++++++++++++++++------
 drivers/gpu/drm/panfrost/panfrost_gpu.h    |  1 +
 drivers/gpu/drm/panfrost/panfrost_job.c    | 26 +++++++++++---
 drivers/gpu/drm/panfrost/panfrost_job.h    |  1 +
 drivers/gpu/drm/panfrost/panfrost_mmu.c    | 32 ++++++++++++-----
 drivers/gpu/drm/panfrost/panfrost_mmu.h    |  1 +
 8 files changed, 91 insertions(+), 23 deletions(-)

-- 
2.43.0