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author | Dave Airlie <airlied@redhat.com> | 2014-05-02 14:02:48 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2014-07-22 11:20:26 +1000 |
commit | 0e32b39ceed665bfa4a77a4bc307b6652b991632 (patch) | |
tree | 7d94f2fdb7d3c1e8c920193b0a067a0487f27a34 /drivers/gpu/drm/i915/i915_drv.c | |
parent | d05410f9a450df8848196ce87f1c9ef14ff89cb5 (diff) | |
download | op-kernel-dev-0e32b39ceed665bfa4a77a4bc307b6652b991632.zip op-kernel-dev-0e32b39ceed665bfa4a77a4bc307b6652b991632.tar.gz |
drm/i915: add DP 1.2 MST support (v0.7)
This adds DP 1.2 MST support on Haswell systems.
Notes:
a) this reworks irq handling for DP MST ports, so that we can
avoid the mode config locking in the current hpd handlers, as
we need to process up/down msgs at a better time.
Changes since v0.1:
use PORT_PCH_HOTPLUG to detect short vs long pulses
add a workqueue to deal with digital events as they can get blocked on the
main workqueue beyong mode_config mutex
fix a bunch of modeset checker warnings
acks irqs in the driver
cleanup the MST encoders
Changes since v0.2:
check irq status again in work handler
move around bring up and tear down to fix DPMS on/off
use path properties.
Changes since v0.3:
updates for mst apis
more state checker fixes
irq handling improvements
fbcon handling support
improved reference counting of link - fixes redocking.
Changes since v0.4:
handle gpu reset hpd reinit without oopsing
check link status on HPD irqs
fix suspend/resume
Changes since v0.5:
use proper functions to get max link/lane counts
fix another checker backtrace - due to connectors disappearing.
set output type in more places fro, unknown->displayport
don't talk to devices if no HPD asserted
check mst on short irqs only
check link status properly
rebase onto prepping irq changes.
drop unsued force_act
Changes since v0.6:
cleanup unused struct entry.
[airlied: fix some sparse warnings].
Reviewed-by: Todd Previte <tprevite@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.c')
-rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 83cb43a..a361bb9 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -518,7 +518,6 @@ static int i915_drm_freeze(struct drm_device *dev) flush_delayed_work(&dev_priv->rps.delayed_resume_work); - intel_runtime_pm_disable_interrupts(dev); intel_suspend_gt_powersave(dev); @@ -532,6 +531,9 @@ static int i915_drm_freeze(struct drm_device *dev) } drm_modeset_unlock_all(dev); + intel_dp_mst_suspend(dev); + intel_runtime_pm_disable_interrupts(dev); + intel_modeset_suspend_hw(dev); } @@ -646,6 +648,15 @@ static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings) intel_modeset_init_hw(dev); + { + unsigned long irqflags; + spin_lock_irqsave(&dev_priv->irq_lock, irqflags); + if (dev_priv->display.hpd_irq_setup) + dev_priv->display.hpd_irq_setup(dev); + spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); + } + + intel_dp_mst_resume(dev); drm_modeset_lock_all(dev); intel_modeset_setup_hw_state(dev, true); drm_modeset_unlock_all(dev); |