On Tue, Jun 22, 2021 at 04:09:40PM +0200, Thomas Zimmermann wrote:

Remove references to struct drm_device.irq_enabled from modern
DRM drivers and core.

KMS drivers enable IRQs for their devices internally. They don't
have to keep track of the IRQ state via irq_enabled. For vblanking,
it's cleaner to test for vblanking support directly than to test
for enabled IRQs.

This used to be a single patch, [1] but it's now a full series.

The first 3 patches replace instances of irq_enabled that are not
required.

Patch 4 fixes vblank ioctls to actually test for vblank support
instead of IRQs.

THe rest of the patchset removes irq_enabled from all non-legacy
drivers. The only exception is omapdrm, which has an internal
dpendency on the field's value. For this drivers, the state gets
duplicated internally.

With the patchset applied, drivers can later switch over to plain
Linux IRQ interfaces and DRM's IRQ midlayer can be declared legacy.

v2:
	* keep the original test for legacy drivers in
	  drm_wait_vblank_ioctl() (Daniel)

[1] https://lore.kernel.org/dri-devel/20210608090301.4752-1-tzimmermann@suse.de/ (local)

On the series:

Acked-by: Daniel Vetter <redacted>

But I've only done a very light reading of this, so please wait for driver
folks to have some time to check their own before merging.

I think a devm_ version of drm_irq_install might be helpful in further
untangling here, but that's definitely for another series.
-Daniel

Thomas Zimmermann (22):
  drm/amdgpu: Track IRQ state in local device state
  drm/hibmc: Call drm_irq_uninstall() unconditionally
  drm/radeon: Track IRQ state in local device state
  drm: Don't test for IRQ support in VBLANK ioctls
  drm/komeda: Don't set struct drm_device.irq_enabled
  drm/malidp: Don't set struct drm_device.irq_enabled
  drm/exynos: Don't set struct drm_device.irq_enabled
  drm/kirin: Don't set struct drm_device.irq_enabled
  drm/imx: Don't set struct drm_device.irq_enabled
  drm/mediatek: Don't set struct drm_device.irq_enabled
  drm/nouveau: Don't set struct drm_device.irq_enabled
  drm/omapdrm: Track IRQ state in local device state
  drm/rockchip: Don't set struct drm_device.irq_enabled
  drm/sti: Don't set struct drm_device.irq_enabled
  drm/stm: Don't set struct drm_device.irq_enabled
  drm/sun4i: Don't set struct drm_device.irq_enabled
  drm/tegra: Don't set struct drm_device.irq_enabled
  drm/tidss: Don't use struct drm_device.irq_enabled
  drm/vc4: Don't set struct drm_device.irq_enabled
  drm/vmwgfx: Don't set struct drm_device.irq_enabled
  drm/xlnx: Don't set struct drm_device.irq_enabled
  drm/zte: Don't set struct drm_device.irq_enabled

 drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c         |  6 +++---
 drivers/gpu/drm/arm/display/komeda/komeda_kms.c |  4 ----
 drivers/gpu/drm/arm/malidp_drv.c                |  4 ----
 drivers/gpu/drm/drm_irq.c                       | 10 +++-------
 drivers/gpu/drm/drm_vblank.c                    | 13 +++++++++----
 drivers/gpu/drm/exynos/exynos_drm_drv.c         | 10 ----------
 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c |  3 +--
 drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c |  2 --
 drivers/gpu/drm/imx/dcss/dcss-kms.c             |  3 ---
 drivers/gpu/drm/imx/imx-drm-core.c              | 11 -----------
 drivers/gpu/drm/mediatek/mtk_drm_drv.c          |  6 ------
 drivers/gpu/drm/nouveau/nouveau_drm.c           |  3 ---
 drivers/gpu/drm/omapdrm/omap_drv.h              |  2 ++
 drivers/gpu/drm/omapdrm/omap_irq.c              |  6 +++---
 drivers/gpu/drm/radeon/radeon_fence.c           |  2 +-
 drivers/gpu/drm/radeon/radeon_irq_kms.c         | 16 ++++++++--------
 drivers/gpu/drm/rockchip/rockchip_drm_drv.c     |  6 ------
 drivers/gpu/drm/sti/sti_compositor.c            |  2 --
 drivers/gpu/drm/stm/ltdc.c                      |  3 ---
 drivers/gpu/drm/sun4i/sun4i_drv.c               |  2 --
 drivers/gpu/drm/tegra/drm.c                     |  7 -------
 drivers/gpu/drm/tidss/tidss_irq.c               |  3 ---
 drivers/gpu/drm/vc4/vc4_kms.c                   |  1 -
 drivers/gpu/drm/vmwgfx/vmwgfx_irq.c             |  8 --------
 drivers/gpu/drm/xlnx/zynqmp_dpsub.c             |  2 --
 drivers/gpu/drm/zte/zx_drm_drv.c                |  6 ------
 26 files changed, 30 insertions(+), 111 deletions(-)


base-commit: 8c1323b422f8473421682ba783b5949ddd89a3f4
prerequisite-patch-id: c2b2f08f0eccc9f5df0c0da49fa1d36267deb11d
prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24
--
2.32.0

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

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