drm/i915: Use full atomic modeset.

Huzzah! \o/
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_drv.c

@@ -1731,7 +1731,7 @@ static int __init i915_init(void)
 	 * to the atomic ioctl and the atomic properties.  Only plane operations on
 	 * a single CRTC will actually work.
 	 */
-	if (i915.nuclear_pageflip)
+	if (driver.driver_features & DRIVER_MODESET)
 		driver.driver_features |= DRIVER_ATOMIC;
 
 	return drm_pci_init(&driver, &i915_pci_driver);

drivers/gpu/drm/i915/i915_drv.h

@@ -2614,7 +2614,6 @@ struct i915_params {
 	int use_mmio_flip;
 	int mmio_debug;
 	bool verbose_state_checks;
-	bool nuclear_pageflip;
 	int edp_vswing;
 };
 extern struct i915_params i915 __read_mostly;

drivers/gpu/drm/i915/i915_params.c

@@ -51,7 +51,6 @@ struct i915_params i915 __read_mostly = {
 	.use_mmio_flip = 0,
 	.mmio_debug = 0,
 	.verbose_state_checks = 1,
-	.nuclear_pageflip = 0,
 	.edp_vswing = 0,
 };
 
@@ -176,10 +175,6 @@ module_param_named(verbose_state_checks, i915.verbose_state_checks, bool, 0600);
 MODULE_PARM_DESC(verbose_state_checks,
 	"Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions.");
 
-module_param_named_unsafe(nuclear_pageflip, i915.nuclear_pageflip, bool, 0600);
-MODULE_PARM_DESC(nuclear_pageflip,
-		 "Force atomic modeset functionality; only planes work for now (default: false).");
-
 /* WA to get away with the default setting in VBT for early platforms.Will be removed */
 module_param_named_unsafe(edp_vswing, i915.edp_vswing, int, 0400);
 MODULE_PARM_DESC(edp_vswing,

drivers/gpu/drm/i915/intel_atomic.c

@@ -35,129 +35,6 @@
 #include <drm/drm_plane_helper.h>
 #include "intel_drv.h"
 
-
-/**
- * intel_atomic_check - validate state object
- * @dev: drm device
- * @state: state to validate
- */
-int intel_atomic_check(struct drm_device *dev,
-		       struct drm_atomic_state *state)
-{
-	int nplanes = dev->mode_config.num_total_plane;
-	int ncrtcs = dev->mode_config.num_crtc;
-	int nconnectors = dev->mode_config.num_connector;
-	enum pipe nuclear_pipe = INVALID_PIPE;
-	struct intel_crtc *nuclear_crtc = NULL;
-	struct intel_crtc_state *crtc_state = NULL;
-	int ret;
-	int i;
-	bool not_nuclear = false;
-
-	to_intel_atomic_state(state)->cdclk = to_i915(dev)->cdclk_freq;
-
-	/*
-	 * FIXME:  At the moment, we only support "nuclear pageflip" on a
-	 * single CRTC.  Cross-crtc updates will be added later.
-	 */
-	for (i = 0; i < nplanes; i++) {
-		struct intel_plane *plane = to_intel_plane(state->planes[i]);
-		if (!plane)
-			continue;
-
-		if (nuclear_pipe == INVALID_PIPE) {
-			nuclear_pipe = plane->pipe;
-		} else if (nuclear_pipe != plane->pipe) {
-			DRM_DEBUG_KMS("i915 only support atomic plane operations on a single CRTC at the moment\n");
-			return -EINVAL;
-		}
-	}
-
-	/*
-	 * FIXME:  We only handle planes for now; make sure there are no CRTC's
-	 * or connectors involved.
-	 */
-	state->allow_modeset = false;
-	for (i = 0; i < ncrtcs; i++) {
-		struct intel_crtc *crtc = to_intel_crtc(state->crtcs[i]);
-		if (crtc)
-			memset(&crtc->atomic, 0, sizeof(crtc->atomic));
-		if (crtc && crtc->pipe != nuclear_pipe)
-			not_nuclear = true;
-		if (crtc && crtc->pipe == nuclear_pipe) {
-			nuclear_crtc = crtc;
-			crtc_state = to_intel_crtc_state(state->crtc_states[i]);
-		}
-	}
-	for (i = 0; i < nconnectors; i++)
-		if (state->connectors[i] != NULL)
-			not_nuclear = true;
-
-	if (not_nuclear) {
-		DRM_DEBUG_KMS("i915 only supports atomic plane operations at the moment\n");
-		return -EINVAL;
-	}
-
-	ret = drm_atomic_helper_check_planes(dev, state);
-	if (ret)
-		return ret;
-
-	return ret;
-}
-
-
-/**
- * intel_atomic_commit - commit validated state object
- * @dev: DRM device
- * @state: the top-level driver state object
- * @async: asynchronous commit
- *
- * This function commits a top-level state object that has been validated
- * with drm_atomic_helper_check().
- *
- * FIXME:  Atomic modeset support for i915 is not yet complete.  At the moment
- * we can only handle plane-related operations and do not yet support
- * asynchronous commit.
- *
- * RETURNS
- * Zero for success or -errno.
- */
-int intel_atomic_commit(struct drm_device *dev,
-			struct drm_atomic_state *state,
-			bool async)
-{
-	struct drm_crtc_state *crtc_state;
-	struct drm_crtc *crtc;
-	int ret;
-	int i;
-
-	if (async) {
-		DRM_DEBUG_KMS("i915 does not yet support async commit\n");
-		return -EINVAL;
-	}
-
-	ret = drm_atomic_helper_prepare_planes(dev, state);
-	if (ret)
-		return ret;
-
-	/* Point of no return */
-	drm_atomic_helper_swap_state(dev, state);
-
-	for_each_crtc_in_state(state, crtc, crtc_state, i) {
-		to_intel_crtc(crtc)->config = to_intel_crtc_state(crtc->state);
-
-		drm_atomic_helper_commit_planes_on_crtc(crtc_state);
-	}
-
-	/* FIXME: This function should eventually call __intel_set_mode when needed */
-
-	drm_atomic_helper_wait_for_vblanks(dev, state);
-	drm_atomic_helper_cleanup_planes(dev, state);
-	drm_atomic_state_free(state);
-
-	return 0;
-}
-
 /**
  * intel_connector_atomic_get_property - fetch connector property value
  * @connector: connector to fetch property for

drivers/gpu/drm/i915/intel_drv.h

@@ -1393,11 +1393,6 @@ void intel_pipe_update_end(struct intel_crtc *crtc, u32 start_vbl_count);
 void intel_tv_init(struct drm_device *dev);
 
 /* intel_atomic.c */
-int intel_atomic_check(struct drm_device *dev,
-		       struct drm_atomic_state *state);
-int intel_atomic_commit(struct drm_device *dev,
-			struct drm_atomic_state *state,
-			bool async);
 int intel_connector_atomic_get_property(struct drm_connector *connector,
 					const struct drm_connector_state *state,
 					struct drm_property *property,