drm/i915: Add pipe scaler pipe source drm property

Initialization of pipe source size property as intel drm property to drm level
to dynamically change pipe source size.

Signed-off-by: Nabendu Maiti <nabendu.bikash.maiti@intel.com>

5 files changed, 32 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 9b892af7811a..f0e3e96ebf7b 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -516,6 +516,12 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
 			return -EFAULT;
 
 		set_out_fence_for_crtc(state->state, crtc, fence_ptr);
+	} else if (property == config->prop_pipe_src_w) {
+		state->src_w = val;
+		state->pipescaler_changed = true;
+	} else if (property == config->prop_pipe_src_h) {
+		state->src_h = val;
+		state->pipescaler_changed = true;
 	} else if (crtc->funcs->atomic_set_property)
 		return crtc->funcs->atomic_set_property(crtc, state, property, val);
 	else
@@ -560,6 +566,10 @@ drm_atomic_crtc_get_property(struct drm_crtc *crtc,
 		*val = (state->gamma_lut) ? state->gamma_lut->base.id : 0;
 	else if (property == config->prop_out_fence_ptr)
 		*val = 0;
+	else if (property == config->prop_pipe_src_w)
+		*val = state->src_w;
+	else if (property == config->prop_pipe_src_h)
+		*val = state->src_h;
 	else if (crtc->funcs->atomic_get_property)
 		return crtc->funcs->atomic_get_property(crtc, state, property, val);
 	else
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 660b4c8715de..989691264b6a 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -336,6 +336,10 @@ int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
 		drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
 		drm_object_attach_property(&crtc->base,
 					   config->prop_out_fence_ptr, 0);
+		drm_object_attach_property(&crtc->base,
+					   config->prop_pipe_src_w, 0);
+		drm_object_attach_property(&crtc->base,
+					   config->prop_pipe_src_h, 0);
 	}
 
 	return 0;
diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c
index d9862259a2a7..c9a33d456803 100644
--- a/drivers/gpu/drm/drm_mode_config.c
+++ b/drivers/gpu/drm/drm_mode_config.c
@@ -337,6 +337,17 @@ static int drm_mode_create_standard_properties(struct drm_device *dev)
 		return -ENOMEM;
 	dev->mode_config.gamma_lut_size_property = prop;
 
+	prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
+			"PIPE_SRC_W", 0, INT_MAX);
+	if (!prop)
+		return -ENOMEM;
+	dev->mode_config.prop_pipe_src_w = prop;
+	prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
+			"PIPE_SRC_H", 0, INT_MAX);
+	if (!prop)
+		return -ENOMEM;
+	dev->mode_config.prop_pipe_src_h = prop;
+
 	return 0;
 }
 
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 24dcb121bad4..d26184f2f05a 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -214,6 +214,9 @@ struct drm_crtc_state {
 	struct drm_pending_vblank_event *event;
 
 	struct drm_atomic_state *state;
+
+	bool pipescaler_changed;
+	u32 src_w, src_h;
 };
 
 /**
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
index 579070ff06ef..a7857dd93164 100644
--- a/include/drm/drm_mode_config.h
+++ b/include/drm/drm_mode_config.h
@@ -536,6 +536,10 @@ struct drm_mode_config {
 	 */
 	struct drm_property *prop_mode_id;
 
+	/* pipe scaler properties */
+	struct drm_property *prop_pipe_src_w;
+	struct drm_property *prop_pipe_src_h;
+
 	/**
 	 * @dvi_i_subconnector_property: Optional DVI-I property to
 	 * differentiate between analog or digital mode.