drm/i915: Change plane_config to store a tiling_mode

Rather than having "tiled" meaning "is it X-tiled?" convert the field to
explicitely store the tiling mode. The code doesn't have to change much
as 1 is conveniently I915_TILING_X.

This is to accommodate future changes around tiling modes and scannout
buffers.

v2: Rebase on top of Ander's "Make intel_crtc->config a pointer"

Reviewed-By: Tvrtko Ursulin <tvrtko.ursulin@intel.com> (v1)
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_display.c

@@ -2352,10 +2352,9 @@ static bool intel_alloc_plane_obj(struct intel_crtc *crtc,
 	if (!obj)
 		return false;
 
-	if (plane_config->tiled) {
-		obj->tiling_mode = I915_TILING_X;
+	obj->tiling_mode = plane_config->tiling;
+	if (obj->tiling_mode == I915_TILING_X)
 		obj->stride = crtc->base.primary->fb->pitches[0];
-	}
 
 	mode_cmd.pixel_format = crtc->base.primary->fb->pixel_format;
 	mode_cmd.width = crtc->base.primary->fb->width;
@@ -6565,7 +6564,7 @@ static void i9xx_get_plane_config(struct intel_crtc *crtc,
 
 	if (INTEL_INFO(dev)->gen >= 4)
 		if (val & DISPPLANE_TILED)
-			plane_config->tiled = true;
+			plane_config->tiling = I915_TILING_X;
 
 	pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
 	fourcc = intel_format_to_fourcc(pixel_format);
@@ -6574,7 +6573,7 @@ static void i9xx_get_plane_config(struct intel_crtc *crtc,
 		drm_format_plane_cpp(fourcc, 0) * 8;
 
 	if (INTEL_INFO(dev)->gen >= 4) {
-		if (plane_config->tiled)
+		if (plane_config->tiling)
 			offset = I915_READ(DSPTILEOFF(plane));
 		else
 			offset = I915_READ(DSPLINOFF(plane));
@@ -6592,7 +6591,7 @@ static void i9xx_get_plane_config(struct intel_crtc *crtc,
 	crtc->base.primary->fb->pitches[0] = val & 0xffffffc0;
 
 	aligned_height = intel_align_height(dev, crtc->base.primary->fb->height,
-					    plane_config->tiled);
+					    plane_config->tiling);
 
 	plane_config->size = PAGE_ALIGN(crtc->base.primary->fb->pitches[0] *
 					aligned_height);
@@ -7619,7 +7618,7 @@ static void ironlake_get_plane_config(struct intel_crtc *crtc,
 
 	if (INTEL_INFO(dev)->gen >= 4)
 		if (val & DISPPLANE_TILED)
-			plane_config->tiled = true;
+			plane_config->tiling = I915_TILING_X;
 
 	pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
 	fourcc = intel_format_to_fourcc(pixel_format);
@@ -7631,7 +7630,7 @@ static void ironlake_get_plane_config(struct intel_crtc *crtc,
 	if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
 		offset = I915_READ(DSPOFFSET(plane));
 	} else {
-		if (plane_config->tiled)
+		if (plane_config->tiling)
 			offset = I915_READ(DSPTILEOFF(plane));
 		else
 			offset = I915_READ(DSPLINOFF(plane));
@@ -7646,7 +7645,7 @@ static void ironlake_get_plane_config(struct intel_crtc *crtc,
 	crtc->base.primary->fb->pitches[0] = val & 0xffffffc0;
 
 	aligned_height = intel_align_height(dev, crtc->base.primary->fb->height,
-					    plane_config->tiled);
+					    plane_config->tiling);
 
 	plane_config->size = PAGE_ALIGN(crtc->base.primary->fb->pitches[0] *
 					aligned_height);

drivers/gpu/drm/i915/intel_drv.h

@@ -258,7 +258,7 @@ struct intel_plane_state {
 };
 
 struct intel_plane_config {
-	bool tiled;
+	unsigned int tiling;
 	int size;
 	u32 base;
 };

drivers/gpu/drm/i915/intel_fbdev.c

@@ -593,7 +593,7 @@ static bool intel_fbdev_init_bios(struct drm_device *dev,
 		}
 
 		cur_size = intel_crtc->config->base.adjusted_mode.crtc_vdisplay;
-		cur_size = ALIGN(cur_size, plane_config->tiled ? (IS_GEN2(dev) ? 16 : 8) : 1);
+		cur_size = ALIGN(cur_size, plane_config->tiling ? (IS_GEN2(dev) ? 16 : 8) : 1);
 		cur_size *= fb->base.pitches[0];
 		DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n",
 			      pipe_name(intel_crtc->pipe),