[Intel-gfx] [PATCH 1/3] drm/i915: disable all display features when no display

[Jani Nikula]

Disable all display feature flags when there are no pipes i.e. there is
no display. This should help with not having to additionally check for
HAS_DISPLAY() when a feature flag check would suffice.

Also disable modeset and atomic driver features.

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/intel_device_info.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index e2aa5bc3a6e0..adc836f15fde 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -516,6 +516,14 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
 					    S32_MAX),
 				USEC_PER_SEC));
 	}
+
+	if (!HAS_DISPLAY(dev_priv)) {
+		dev_priv->drm.driver_features &= ~(DRIVER_MODESET |
+						   DRIVER_ATOMIC);
+		memset(&info->display, 0, sizeof(info->display));
+		memset(runtime->num_sprites, 0, sizeof(runtime->num_sprites));
+		memset(runtime->num_scalers, 0, sizeof(runtime->num_scalers));
+	}
 }
 
 void intel_driver_caps_print(const struct intel_driver_caps *caps,
-- 
2.20.1