Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 120 insertions, 0 deletions

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_plane.c b/drivers/gpu/drm/tilcdc/tilcdc_plane.c
new file mode 100644
index 000000000..cf77a8ce7
--- /dev/null
+++ b/drivers/gpu/drm/tilcdc/tilcdc_plane.c
@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2015 Texas Instruments
+ * Author: Jyri Sarha <jsarha@ti.com>
+ */
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_framebuffer.h>
+
+#include "tilcdc_drv.h"
+
+static const struct drm_plane_funcs tilcdc_plane_funcs = {
+	.update_plane	= drm_atomic_helper_update_plane,
+	.disable_plane	= drm_atomic_helper_disable_plane,
+	.destroy	= drm_plane_cleanup,
+	.reset		= drm_atomic_helper_plane_reset,
+	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+};
+
+static int tilcdc_plane_atomic_check(struct drm_plane *plane,
+				     struct drm_atomic_state *state)
+{
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
+									   plane);
+	struct drm_crtc_state *crtc_state;
+	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
+									   plane);
+	unsigned int pitch;
+
+	if (!new_state->crtc)
+		return 0;
+
+	if (WARN_ON(!new_state->fb))
+		return -EINVAL;
+
+	if (new_state->crtc_x || new_state->crtc_y) {
+		dev_err(plane->dev->dev, "%s: crtc position must be zero.",
+			__func__);
+		return -EINVAL;
+	}
+
+	crtc_state = drm_atomic_get_existing_crtc_state(state,
+							new_state->crtc);
+	/* we should have a crtc state if the plane is attached to a crtc */
+	if (WARN_ON(!crtc_state))
+		return 0;
+
+	if (crtc_state->mode.hdisplay != new_state->crtc_w ||
+	    crtc_state->mode.vdisplay != new_state->crtc_h) {
+		dev_err(plane->dev->dev,
+			"%s: Size must match mode (%dx%d == %dx%d)", __func__,
+			crtc_state->mode.hdisplay, crtc_state->mode.vdisplay,
+			new_state->crtc_w, new_state->crtc_h);
+		return -EINVAL;
+	}
+
+	pitch = crtc_state->mode.hdisplay *
+		new_state->fb->format->cpp[0];
+	if (new_state->fb->pitches[0] != pitch) {
+		dev_err(plane->dev->dev,
+			"Invalid pitch: fb and crtc widths must be the same");
+		return -EINVAL;
+	}
+
+	if (old_state->fb && new_state->fb->format != old_state->fb->format) {
+		dev_dbg(plane->dev->dev,
+			"%s(): pixel format change requires mode_change\n",
+			__func__);
+		crtc_state->mode_changed = true;
+	}
+
+	return 0;
+}
+
+static void tilcdc_plane_atomic_update(struct drm_plane *plane,
+				       struct drm_atomic_state *state)
+{
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
+									   plane);
+
+	if (!new_state->crtc)
+		return;
+
+	if (WARN_ON(!new_state->fb || !new_state->crtc->state))
+		return;
+
+	if (tilcdc_crtc_update_fb(new_state->crtc,
+				  new_state->fb,
+				  new_state->crtc->state->event) == 0) {
+		new_state->crtc->state->event = NULL;
+	}
+}
+
+static const struct drm_plane_helper_funcs plane_helper_funcs = {
+	.atomic_check = tilcdc_plane_atomic_check,
+	.atomic_update = tilcdc_plane_atomic_update,
+};
+
+int tilcdc_plane_init(struct drm_device *dev,
+		      struct drm_plane *plane)
+{
+	struct tilcdc_drm_private *priv = dev->dev_private;
+	int ret;
+
+	ret = drm_universal_plane_init(dev, plane, 1, &tilcdc_plane_funcs,
+				       priv->pixelformats,
+				       priv->num_pixelformats,
+				       NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
+	if (ret) {
+		dev_err(dev->dev, "Failed to initialize plane: %d\n", ret);
+		return ret;
+	}
+
+	drm_plane_helper_add(plane, &plane_helper_funcs);
+
+	return 0;
+}