[Intel-gfx] [PATCH] drm: Nuke ->vblank_disable_allowed
Daniel Vetter
daniel.vetter at ffwll.ch
Wed May 18 20:29:57 UTC 2016
This was added in
commit 0a3e67a4caac273a3bfc4ced3da364830b1ab241
Author: Jesse Barnes <jbarnes at virtuousgeek.org>
Date: Tue Sep 30 12:14:26 2008 -0700
drm: Rework vblank-wait handling to allow interrupt reduction.
to stay backwards-compatible with old UMS code that didn't even tell
the kernel when it did a modeset, so that the kernel could
save/restore vblank counters. At worst this means vblanks will be
somewhat funky on a setup that very likely no one still runs.
So let's just nuke it.
Plan B would be to set it unconditionally in drm_vblank_init for kms
drivers, instead of in each driver separately. So if this patch breaks
anything please only restore the hunks in drmP.h and drm_irq.c, plus
add a check for DRIVER_MODESET in drm_vblank_init.
Stumbled over this in a discussion on irc with Chris.
v2: Remove leftover debug gunk from psr hacking (Alex).
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Alex Deucher <alexander.deucher at amd.com>
Cc: Liviu Dudau <liviu.dudau at arm.com>
Cc: Russell King <rmk+kernel at arm.linux.org.uk>
Cc: Thierry Reding <thierry.reding at gmail.com>
Cc: Eric Anholt <eric at anholt.net>
Cc: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
Cc: Inki Dae <inki.dae at samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen at ti.com>
Cc: Mark Yao <mark.yao at rock-chips.com>
Cc: Sascha Hauer <s.hauer at pengutronix.de>
Cc: Philipp Zabel <p.zabel at pengutronix.de>
Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 1 -
drivers/gpu/drm/arm/hdlcd_drv.c | 1 -
drivers/gpu/drm/armada/armada_drv.c | 1 -
drivers/gpu/drm/drm_irq.c | 6 ------
drivers/gpu/drm/exynos/exynos_drm_drv.c | 7 -------
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 1 -
drivers/gpu/drm/gma500/psb_drv.c | 1 -
drivers/gpu/drm/i915/i915_dma.c | 3 ---
drivers/gpu/drm/imx/imx-drm-core.c | 7 -------
drivers/gpu/drm/radeon/radeon_irq_kms.c | 1 -
drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 7 -------
drivers/gpu/drm/tegra/drm.c | 1 -
drivers/gpu/drm/vc4/vc4_kms.c | 2 --
include/drm/drmP.h | 8 --------
14 files changed, 47 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
index 9266c7b69808..835a3fa8d8df 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
@@ -219,7 +219,6 @@ int amdgpu_irq_init(struct amdgpu_device *adev)
if (r) {
return r;
}
- adev->ddev->vblank_disable_allowed = true;
/* enable msi */
adev->irq.msi_enabled = false;
diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c
index 2112f0b105e3..4f909378d581 100644
--- a/drivers/gpu/drm/arm/hdlcd_drv.c
+++ b/drivers/gpu/drm/arm/hdlcd_drv.c
@@ -379,7 +379,6 @@ static int hdlcd_drm_bind(struct device *dev)
DRM_ERROR("failed to initialise vblank\n");
goto err_vblank;
}
- drm->vblank_disable_allowed = true;
drm_mode_config_reset(drm);
drm_kms_helper_poll_init(drm);
diff --git a/drivers/gpu/drm/armada/armada_drv.c b/drivers/gpu/drm/armada/armada_drv.c
index 531fcb946346..cb21c0b6374a 100644
--- a/drivers/gpu/drm/armada/armada_drv.c
+++ b/drivers/gpu/drm/armada/armada_drv.c
@@ -113,7 +113,6 @@ static int armada_drm_load(struct drm_device *dev, unsigned long flags)
goto err_comp;
dev->irq_enabled = true;
- dev->vblank_disable_allowed = 1;
ret = armada_fbdev_init(dev);
if (ret)
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index d1b5fc20b2f8..1a0ae89087e8 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -348,9 +348,6 @@ static void vblank_disable_fn(unsigned long arg)
unsigned int pipe = vblank->pipe;
unsigned long irqflags;
- if (!dev->vblank_disable_allowed)
- return;
-
spin_lock_irqsave(&dev->vbl_lock, irqflags);
if (atomic_read(&vblank->refcount) == 0 && vblank->enabled) {
DRM_DEBUG("disabling vblank on crtc %u\n", pipe);
@@ -437,8 +434,6 @@ int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs)
"get_vblank_timestamp == NULL\n");
}
- dev->vblank_disable_allowed = false;
-
return 0;
err:
@@ -1555,7 +1550,6 @@ static void drm_legacy_vblank_post_modeset(struct drm_device *dev,
if (vblank->inmodeset) {
spin_lock_irqsave(&dev->vbl_lock, irqflags);
- dev->vblank_disable_allowed = true;
drm_reset_vblank_timestamp(dev, pipe);
spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 21c719e8e02b..2dd820e23b0c 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -212,13 +212,6 @@ static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
*/
dev->irq_enabled = true;
- /*
- * with vblank_disable_allowed = true, vblank interrupt will be disabled
- * by drm timer once a current process gives up ownership of
- * vblank event.(after drm_vblank_put function is called)
- */
- dev->vblank_disable_allowed = true;
-
/* init kms poll for handling hpd */
drm_kms_helper_poll_init(dev);
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
index 2e58dfd74ae1..33727d5d826a 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
@@ -80,7 +80,6 @@ static int fsl_dcu_load(struct drm_device *dev, unsigned long flags)
dev_err(dev->dev, "failed to initialize vblank\n");
goto done;
}
- dev->vblank_disable_allowed = true;
ret = fsl_dcu_drm_irq_init(dev);
if (ret < 0)
diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
index 4e1c6850520e..82b8ce418b27 100644
--- a/drivers/gpu/drm/gma500/psb_drv.c
+++ b/drivers/gpu/drm/gma500/psb_drv.c
@@ -374,7 +374,6 @@ static int psb_driver_load(struct drm_device *dev, unsigned long flags)
drm_irq_install(dev, dev->pdev->irq);
- dev->vblank_disable_allowed = true;
dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
dev->driver->get_vblank_counter = psb_get_vblank_counter;
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index a8c79f6512a4..fd06bff216ff 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -515,9 +515,6 @@ static int i915_load_modeset_init(struct drm_device *dev)
intel_modeset_gem_init(dev);
- /* Always safe in the mode setting case. */
- /* FIXME: do pre/post-mode set stuff in core KMS code */
- dev->vblank_disable_allowed = true;
if (INTEL_INFO(dev)->num_pipes == 0)
return 0;
diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index 2453fb1c68a7..1080019e7b17 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -252,13 +252,6 @@ static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags)
if (ret)
goto err_kms;
- /*
- * with vblank_disable_allowed = true, vblank interrupt will be
- * disabled by drm timer once a current process gives up ownership
- * of vblank event. (after drm_vblank_put function is called)
- */
- drm->vblank_disable_allowed = true;
-
platform_set_drvdata(drm->platformdev, drm);
/* Now try and bind all our sub-components */
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
index 1e9304d1c88f..c084cadcbf21 100644
--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -291,7 +291,6 @@ int radeon_irq_kms_init(struct radeon_device *rdev)
if (r) {
return r;
}
- rdev->ddev->vblank_disable_allowed = true;
/* enable msi */
rdev->msi_enabled = 0;
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index ced1e5f93cda..09a4d429c0f0 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -217,13 +217,6 @@ static int rockchip_drm_load(struct drm_device *drm_dev, unsigned long flags)
if (ret)
goto err_kms_helper_poll_fini;
- /*
- * with vblank_disable_allowed = true, vblank interrupt will be disabled
- * by drm timer once a current process gives up ownership of
- * vblank event.(after drm_vblank_put function is called)
- */
- drm_dev->vblank_disable_allowed = true;
-
drm_mode_config_reset(drm_dev);
ret = rockchip_drm_fbdev_init(drm_dev);
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 679905544181..b59c3bf0df44 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -180,7 +180,6 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
/* syncpoints are used for full 32-bit hardware VBLANK counters */
drm->max_vblank_count = 0xffffffff;
- drm->vblank_disable_allowed = true;
err = drm_vblank_init(drm, drm->mode_config.num_crtc);
if (err < 0)
diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c
index d423ba10239a..cb37751bc99f 100644
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -207,8 +207,6 @@ int vc4_kms_load(struct drm_device *dev)
dev->mode_config.preferred_depth = 24;
dev->mode_config.async_page_flip = true;
- dev->vblank_disable_allowed = true;
-
drm_mode_config_reset(dev);
vc4->fbdev = drm_fbdev_cma_init(dev, 32,
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index f0d1450d4ea5..30dc7d8c403f 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -819,14 +819,6 @@ struct drm_device {
int irq;
/*
- * At load time, disabling the vblank interrupt won't be allowed since
- * old clients may not call the modeset ioctl and therefore misbehave.
- * Once the modeset ioctl *has* been called though, we can safely
- * disable them when unused.
- */
- bool vblank_disable_allowed;
-
- /*
* If true, vblank interrupt will be disabled immediately when the
* refcount drops to zero, as opposed to via the vblank disable
* timer.
--
2.8.1
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