i915: Add a Kconfig option to turn on i915.preliminary_hw_support by default

When building kernels for a preliminary hardware target, having to add a
kernel command-line option can prove inconvenient.  Add a Kconfig option
that changes the default of this option to 1.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Pimp the Kconfig help text a bit as suggested by Damien in
his 2nd review.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index a7c54c843291..cd4246b480d4 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -168,6 +168,17 @@ config DRM_I915_KMS
           the driver to bind to PCI devices, which precludes loading things
           like intelfb.
 
+config DRM_I915_PRELIMINARY_HW_SUPPORT
+        bool "Enable preliminary support for prerelease Intel hardware by default"
+        depends on DRM_I915
+        help
+          Choose this option if you have prerelease Intel hardware and want the
+          i915 driver to support it by default.  You can enable such support at
+          runtime with the module option i915.preliminary_hw_support=1; this
+          option changes the default for that module option.
+
+          If in doubt, say "N".
+
 config DRM_MGA
         tristate "Matrox g200/g400"
         depends on DRM && PCI