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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2012-04-26 11:28:42 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-05-03 17:22:36 +0200 |
| commit | 9104183dad6314c55344d65738cd719b909a3e0a (patch) | |
| tree | 70ae38df91f7f3b52c7917ef76bfeb87e00e109b /drivers/gpu/drm/i915/i915_drv.h | |
| parent | c846b6194dbe02d9f4fc8c0471e799babc1c3f47 (diff) | |
| download | lwn-9104183dad6314c55344d65738cd719b909a3e0a.tar.gz lwn-9104183dad6314c55344d65738cd719b909a3e0a.zip | |
drm/i915: Periodically sanity check power management
Every time we use the device after a period of idleness, check that the
power management setup is still sane. This is to workaround a bug
whereby it seems that we begin suppressing power management interrupts,
preventing SandyBridge+ from going into turbo mode.
This patch does have a side-effect. It removes the mark-busy for just
moving the cursor - we don't want to increase the render clock just for
the sprite, though we may want to bump the display frequency. I'd argue
that we do not, and certainly don't want to take the struct_mutex here
due to the large latencies that introduces.
References: https://bugs.freedesktop.org/show_bug.cgi?id=44006
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 1f2510931019..00a20e985d28 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -240,6 +240,7 @@ struct drm_i915_display_funcs { void (*update_wm)(struct drm_device *dev); void (*update_sprite_wm)(struct drm_device *dev, int pipe, uint32_t sprite_width, int pixel_size); + void (*sanitize_pm)(struct drm_device *dev); int (*crtc_mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode, |