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| author | Jani Nikula <jani.nikula@intel.com> | 2013-08-30 19:40:30 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-09-04 17:34:56 +0200 |
| commit | 9c4b0a683193a646ea3b0c609a2276ae99a7cee4 (patch) | |
| tree | 29bb58a9284a39546dcb02e6df2fc5e34c5cc4d6 /drivers/gpu/drm/i915/i915_drv.h | |
| parent | 20f4dbe45950e462aa7c3243f95c0d8bcc369ca0 (diff) | |
| download | lwn-9c4b0a683193a646ea3b0c609a2276ae99a7cee4.tar.gz lwn-9c4b0a683193a646ea3b0c609a2276ae99a7cee4.zip | |
drm/i915: add opregion function to notify bios of encoder enable/disable
The bios interface seems messy, and it's hard to tell what the bios
really wants. At first, only add support for DDI based machines (hsw+),
and see how it turns out.
The spec says to notify prior to power down and after power up. It is
unclear whether it makes a difference.
v2:
- squash notification function and callers patches together (Daniel)
- move callers to haswell_crtc_{enable,disable} (Daniel)
- rename notification function (Chris)
v3:
- separate notification function and callers again, as it's not clear
whether the display power state notification is the right thing to do
after all
v4: per Paulo's review:
- drop LVDS
- WARN on unsupported encoder types
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
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 | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 1fce8415d9d2..3b7368d6d72b 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2189,15 +2189,23 @@ static inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter) extern void intel_i2c_reset(struct drm_device *dev); /* intel_opregion.c */ +struct intel_encoder; extern int intel_opregion_setup(struct drm_device *dev); #ifdef CONFIG_ACPI extern void intel_opregion_init(struct drm_device *dev); extern void intel_opregion_fini(struct drm_device *dev); extern void intel_opregion_asle_intr(struct drm_device *dev); +extern int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, + bool enable); #else static inline void intel_opregion_init(struct drm_device *dev) { return; } static inline void intel_opregion_fini(struct drm_device *dev) { return; } static inline void intel_opregion_asle_intr(struct drm_device *dev) { return; } +static inline int +intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, bool enable) +{ + return 0; +} #endif /* intel_acpi.c */ |