[PATCH 3/3] drm/i915/skl: Support for 90/270 rotation

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v2: Moving creation of property in a function, checking for 90/270
rotation simultaneously (Chris)
Letting primary plane to be positioned
v3: Adding if/else for 90/270 and rest params programming, adding check for
pixel_format, some cleanup (review comments)
v4: Adding right pixel_formats, using src_* params instead of crtc_* for offset
and size programming (Ville)
v5: Rebased on -nightly and Tvrtko's series for gtt remapping.

Signed-off-by: Sonika Jindal <sonika.jindal@xxxxxxxxx>
---
 Please note that this is on top of Tvrtko's patches for rotated gtt remapping
 titled: [PATCH v2 0/8] Skylake 90/270 display rotation
---
 drivers/gpu/drm/i915/i915_reg.h      |    2 +
 drivers/gpu/drm/i915/intel_display.c |  105 +++++++++++++++++++++++++++-------
 drivers/gpu/drm/i915/intel_drv.h     |    5 ++
 drivers/gpu/drm/i915/intel_sprite.c  |   52 ++++++++++++-----
 4 files changed, 128 insertions(+), 36 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 56b97c4..870e076 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4825,7 +4825,9 @@ enum skl_disp_power_wells {
 #define   PLANE_CTL_ALPHA_HW_PREMULTIPLY	(  3 << 4)
 #define   PLANE_CTL_ROTATE_MASK			0x3
 #define   PLANE_CTL_ROTATE_0			0x0
+#define   PLANE_CTL_ROTATE_90			0x1
 #define   PLANE_CTL_ROTATE_180			0x2
+#define   PLANE_CTL_ROTATE_270			0x3
 #define _PLANE_STRIDE_1_A			0x70188
 #define _PLANE_STRIDE_2_A			0x70288
 #define _PLANE_STRIDE_3_A			0x70388
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index afdc101..9387ba0 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2189,11 +2189,11 @@ static bool need_vtd_wa(struct drm_device *dev)
 	return false;
 }
 
-static int
+unsigned int
 intel_tile_height(struct drm_device *dev, uint32_t bits_per_pixel,
 		  uint64_t fb_format_modifier)
 {
-	int tile_height;
+	unsigned int tile_height;
 
 	switch (fb_format_modifier) {
 	case DRM_FORMAT_MOD_NONE:
@@ -2240,7 +2240,7 @@ intel_fb_align_height(struct drm_device *dev, int height, uint32_t pixel_format,
 {
 	uint32_t bits_per_pixel = drm_format_plane_cpp(pixel_format, 0) * 8;
 
-	return ALIGN(height, intel_fb_tile_height(dev, bits_per_pixel,
+	return ALIGN(height, intel_tile_height(dev, bits_per_pixel,
 						  fb_format_modifier));
 }
 
@@ -2380,6 +2380,28 @@ int intel_fb_ggtt_view(struct drm_plane_state *plane_state,
 		return -EINVAL;
 	}
 
+	switch (fb->pixel_format) {
+		case DRM_FORMAT_XRGB8888:
+		case DRM_FORMAT_ARGB8888:
+		case DRM_FORMAT_XBGR8888:
+		case DRM_FORMAT_ABGR8888:
+		case DRM_FORMAT_XRGB2101010:
+		case DRM_FORMAT_ARGB2101010:
+		case DRM_FORMAT_XBGR2101010:
+		case DRM_FORMAT_ABGR2101010:
+		case DRM_FORMAT_YUYV:
+		case DRM_FORMAT_YVYU:
+		case DRM_FORMAT_UYVY:
+		case DRM_FORMAT_VYUY:
+		case DRM_FORMAT_NV12:
+			break;
+
+		default:
+			DRM_DEBUG_KMS("Unsupported pixel format:%d for 90/270 rotation!\n",
+			      fb->pixel_format);
+			return -EINVAL;
+	}
+
 	return 1;
 }
 
@@ -2999,7 +3021,10 @@ static void skylake_update_primary_plane(struct drm_crtc *crtc,
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 	struct drm_i915_gem_object *obj;
 	int pipe = intel_crtc->pipe;
-	u32 plane_ctl, stride_div;
+	u32 plane_ctl, stride_div, stride;
+	u32 tile_height, plane_offset, plane_size;
+	unsigned int rotation;
+	int x_offset, y_offset;
 	unsigned long surf_addr;
 	struct drm_plane *plane;
 
@@ -3063,8 +3088,21 @@ static void skylake_update_primary_plane(struct drm_crtc *crtc,
 
 	plane = crtc->primary;
 	plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE;
-	if (plane->state->rotation == BIT(DRM_ROTATE_180))
+
+	rotation = plane->state->rotation;
+	switch (rotation) {
+	case BIT(DRM_ROTATE_90):
+		plane_ctl |= PLANE_CTL_ROTATE_90;
+		break;
+
+	case BIT(DRM_ROTATE_180):
 		plane_ctl |= PLANE_CTL_ROTATE_180;
+		break;
+
+	case BIT(DRM_ROTATE_270):
+		plane_ctl |= PLANE_CTL_ROTATE_270;
+		break;
+	}
 
 	obj = intel_fb_obj(fb);
 	stride_div = intel_fb_stride_alignment(dev, fb->modifier[0],
@@ -3073,17 +3111,33 @@ static void skylake_update_primary_plane(struct drm_crtc *crtc,
 
 	I915_WRITE(PLANE_CTL(pipe, 0), plane_ctl);
 
+	if (rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))) {
+		/* stride = Surface height in tiles */
+		tile_height = intel_tile_height(dev, fb->bits_per_pixel,
+						fb->modifier[0]);
+		stride = DIV_ROUND_UP(fb->height, tile_height);
+		x_offset = stride * tile_height - y - (plane->state->src_h >> 16);
+		y_offset = x;
+		plane_size = ((plane->state->src_w >> 16) - 1) << 16 |
+					((plane->state->src_h >> 16) - 1);
+	} else {
+		stride = fb->pitches[0] / stride_div;
+		x_offset = x;
+		y_offset = y;
+		plane_size = ((plane->state->src_h >> 16) - 1) << 16 |
+			((plane->state->src_w >> 16) - 1);
+	}
+	plane_offset = y_offset << 16 | x_offset;
+
 	DRM_DEBUG_KMS("Writing base %08lX %d,%d,%d,%d pitch=%d\n",
 		      surf_addr,
 		      x, y, fb->width, fb->height,
 		      fb->pitches[0]);
 
 	I915_WRITE(PLANE_POS(pipe, 0), 0);
-	I915_WRITE(PLANE_OFFSET(pipe, 0), (y << 16) | x);
-	I915_WRITE(PLANE_SIZE(pipe, 0),
-		   ((plane->state->src_h >> 16) - 1) << 16 |
-		   ((plane->state->src_w >> 16) - 1));
-	I915_WRITE(PLANE_STRIDE(pipe, 0), fb->pitches[0] / stride_div);
+	I915_WRITE(PLANE_OFFSET(pipe, 0), plane_offset);
+	I915_WRITE(PLANE_SIZE(pipe, 0), plane_size);
+	I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
 	I915_WRITE(PLANE_SURF(pipe, 0), surf_addr);
 
 	POSTING_READ(PLANE_SURF(pipe, 0));
@@ -12445,23 +12499,32 @@ static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
 				 intel_primary_formats, num_formats,
 				 DRM_PLANE_TYPE_PRIMARY);
 
-	if (INTEL_INFO(dev)->gen >= 4) {
-		if (!dev->mode_config.rotation_property)
-			dev->mode_config.rotation_property =
-				drm_mode_create_rotation_property(dev,
-							BIT(DRM_ROTATE_0) |
-							BIT(DRM_ROTATE_180));
-		if (dev->mode_config.rotation_property)
-			drm_object_attach_property(&primary->base.base,
-				dev->mode_config.rotation_property,
-				state->base.rotation);
-	}
+	if (INTEL_INFO(dev)->gen >= 4)
+		intel_create_rotation_property(dev, primary);
 
 	drm_plane_helper_add(&primary->base, &intel_plane_helper_funcs);
 
 	return &primary->base;
 }
 
+void intel_create_rotation_property(struct drm_device *dev, struct intel_plane *plane)
+{
+	if (!dev->mode_config.rotation_property) {
+		unsigned long flags = BIT(DRM_ROTATE_0) |
+			BIT(DRM_ROTATE_180);
+
+		if (INTEL_INFO(dev)->gen >= 9)
+			flags |= BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270);
+
+		dev->mode_config.rotation_property =
+			drm_mode_create_rotation_property(dev, flags);
+	}
+	if (dev->mode_config.rotation_property)
+		drm_object_attach_property(&plane->base.base,
+				dev->mode_config.rotation_property,
+				plane->base.state->rotation);
+}
+
 static int
 intel_check_cursor_plane(struct drm_plane *plane,
 			 struct intel_plane_state *state)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 715510a..4f428f6 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -988,6 +988,11 @@ intel_rotation_90_or_270(unsigned int rotation)
 }
 struct sg_table *intel_rotate_fb_obj_pages(struct i915_ggtt_view *ggtt_view,
 					   struct drm_i915_gem_object *obj);
+unsigned int
+intel_tile_height(struct drm_device *dev, uint32_t bits_per_pixel,
+		  uint64_t fb_modifier);
+void intel_create_rotation_property(struct drm_device *dev,
+					struct intel_plane *plane);
 
 bool intel_wm_need_update(struct drm_plane *plane,
 			  struct drm_plane_state *state);
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index addc90e..960f993 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -189,9 +189,12 @@ skl_update_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc,
 	struct intel_plane *intel_plane = to_intel_plane(drm_plane);
 	const int pipe = intel_plane->pipe;
 	const int plane = intel_plane->plane + 1;
-	u32 plane_ctl, stride_div;
+	u32 plane_ctl, stride_div, stride;
 	int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
 	unsigned long surf_addr;
+	u32 tile_height, plane_offset, plane_size;
+	unsigned int rotation;
+	int x_offset, y_offset;
 
 	plane_ctl = I915_READ(PLANE_CTL(pipe, plane));
 
@@ -262,8 +265,20 @@ skl_update_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc,
 		MISSING_CASE(fb->modifier[0]);
 	}
 
-	if (drm_plane->state->rotation == BIT(DRM_ROTATE_180))
+	rotation = drm_plane->state->rotation;
+	switch (rotation) {
+	case BIT(DRM_ROTATE_90):
+		plane_ctl |= PLANE_CTL_ROTATE_90;
+		break;
+
+	case BIT(DRM_ROTATE_180):
 		plane_ctl |= PLANE_CTL_ROTATE_180;
+		break;
+
+	case BIT(DRM_ROTATE_270):
+		plane_ctl |= PLANE_CTL_ROTATE_270;
+		break;
+	}
 
 	plane_ctl |= PLANE_CTL_ENABLE;
 	plane_ctl |= PLANE_CTL_PIPE_CSC_ENABLE;
@@ -283,10 +298,26 @@ skl_update_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc,
 
 	surf_addr = intel_plane_obj_offset(intel_plane, obj);
 
-	I915_WRITE(PLANE_OFFSET(pipe, plane), (y << 16) | x);
-	I915_WRITE(PLANE_STRIDE(pipe, plane), fb->pitches[0] / stride_div);
+	if (rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))) {
+		/* stride: Surface height in tiles */
+		tile_height = intel_tile_height(dev, fb->bits_per_pixel,
+							fb->modifier[0]);
+		stride = DIV_ROUND_UP(fb->height, tile_height);
+		plane_size = (src_w << 16) | src_h;
+		x_offset = stride * tile_height - y - src_h;
+		y_offset = x;
+	} else {
+		stride = fb->pitches[0] / stride_div;
+		plane_size = (src_h << 16) | src_w;
+		x_offset = x;
+		y_offset = y;
+	}
+	plane_offset = y_offset << 16 | x_offset;
+
+	I915_WRITE(PLANE_OFFSET(pipe, plane), plane_offset);
+	I915_WRITE(PLANE_STRIDE(pipe, plane), stride);
 	I915_WRITE(PLANE_POS(pipe, plane), (crtc_y << 16) | crtc_x);
-	I915_WRITE(PLANE_SIZE(pipe, plane), (crtc_h << 16) | crtc_w);
+	I915_WRITE(PLANE_SIZE(pipe, plane), plane_size);
 	I915_WRITE(PLANE_CTL(pipe, plane), plane_ctl);
 	I915_WRITE(PLANE_SURF(pipe, plane), surf_addr);
 	POSTING_READ(PLANE_SURF(pipe, plane));
@@ -1519,16 +1550,7 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
 		goto out;
 	}
 
-	if (!dev->mode_config.rotation_property)
-		dev->mode_config.rotation_property =
-			drm_mode_create_rotation_property(dev,
-							  BIT(DRM_ROTATE_0) |
-							  BIT(DRM_ROTATE_180));
-
-	if (dev->mode_config.rotation_property)
-		drm_object_attach_property(&intel_plane->base.base,
-					   dev->mode_config.rotation_property,
-					   state->base.rotation);
+	intel_create_rotation_property(dev, intel_plane);
 
 	drm_plane_helper_add(&intel_plane->base, &intel_plane_helper_funcs);
 
-- 
1.7.10.4

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