diff options
| author | Damien Lespiau <damien.lespiau@intel.com> | 2014-02-10 17:20:55 +0000 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-02-12 18:53:01 +0100 |
| commit | a0bae57f5b9d61c64f5c2675a53fec27baf583d9 (patch) | |
| tree | 2877a8b539afb09411dcbbff0f357e872889fcfb | |
| parent | 658ac4c6a29cfe7cedd494fb4b74acc3643dabab (diff) | |
drm/i915: Provide a command line option to disable display
If we can't actually determine at run-time we have a fused-off display,
provide at least an option to disable it.
v2: Move the i915.disable_display test in a separate check
(Daniel Vetter)
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 9 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_params.c | 4 |
3 files changed, 11 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 033c943b6ba..1d65dbd15c3 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1483,9 +1483,12 @@ static void intel_device_info_runtime_init(struct drm_device *dev) if (IS_VALLEYVIEW(dev)) info->num_sprites = 2; - if (info->num_pipes > 0 && - (INTEL_INFO(dev)->gen == 7 || INTEL_INFO(dev)->gen == 8) && - !IS_VALLEYVIEW(dev)) { + if (i915.disable_display) { + DRM_INFO("Display disabled (module parameter)\n"); + info->num_pipes = 0; + } else if (info->num_pipes > 0 && + (INTEL_INFO(dev)->gen == 7 || INTEL_INFO(dev)->gen == 8) && + !IS_VALLEYVIEW(dev)) { u32 fuse_strap = I915_READ(FUSE_STRAP); u32 sfuse_strap = I915_READ(SFUSE_STRAP); diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 0580d979f88..96601149cab 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1958,6 +1958,7 @@ struct i915_params { bool fastboot; bool prefault_disable; bool reset; + bool disable_display; }; extern struct i915_params i915 __read_mostly; diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c index c743057b651..3b482585c5a 100644 --- a/drivers/gpu/drm/i915/i915_params.c +++ b/drivers/gpu/drm/i915/i915_params.c @@ -47,6 +47,7 @@ struct i915_params i915 __read_mostly = { .prefault_disable = 0, .reset = true, .invert_brightness = 0, + .disable_display = 0, }; module_param_named(modeset, i915.modeset, int, 0400); @@ -153,3 +154,6 @@ MODULE_PARM_DESC(invert_brightness, "report PCI device ID, subsystem vendor and subsystem device ID " "to dri-devel@lists.freedesktop.org, if your machine needs it. " "It will then be included in an upcoming module version."); + +module_param_named(disable_display, i915.disable_display, bool, 0600); +MODULE_PARM_DESC(disable_display, "Disable display (default: false)"); |