diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-07-20 15:44:45 -0700 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-09-18 15:46:19 +0100 |
| commit | f899fc64cda8569d0529452aafc0da31c042df2e (patch) | |
| tree | 61b6d32abe3524b83abc9d8b9382e3f82225cd64 /drivers/gpu/drm/i915/i915_dma.c | |
| parent | 373a3cf744c774478f44921c50011b896ab08f9d (diff) | |
drm/i915: use GMBUS to manage i2c links
Use the GMBUS interface rather than direct bit banging to grab the EDID
over DDC (and for other forms of auxiliary communication with external
display controllers). The hope is that this method will be much faster
and more reliable than bit banging for fetching EDIDs from buggy monitors
or through switches, though we still preserve the bit banging as a
fallback in case GMBUS fails.
Based on an original patch by Jesse Barnes.
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 7c7d1bc9d1b..39aaffe7958 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -2001,6 +2001,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) /* Try to make sure MCHBAR is enabled before poking at it */ intel_setup_mchbar(dev); + intel_setup_gmbus(dev); intel_opregion_setup(dev); i915_gem_load(dev); @@ -2155,6 +2156,7 @@ int i915_driver_unload(struct drm_device *dev) intel_cleanup_overlay(dev); } + intel_teardown_gmbus(dev); intel_teardown_mchbar(dev); destroy_workqueue(dev_priv->wq); |