1 files changed, 590 insertions, 0 deletions

diff --git a/drivers/gpu/drm/omapdrm/omap_plane.c b/drivers/gpu/drm/omapdrm/omap_plane.c
new file mode 100644
index 000000000..24a2ded08
--- /dev/null
+++ b/drivers/gpu/drm/omapdrm/omap_plane.c
@@ -0,0 +1,590 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
+ * Author: Rob Clark <rob.clark@linaro.org>
+ */
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_blend.h>
+#include <drm/drm_gem_atomic_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_framebuffer.h>
+
+#include "omap_dmm_tiler.h"
+#include "omap_drv.h"
+
+/*
+ * plane funcs
+ */
+
+#define to_omap_plane_state(x) container_of(x, struct omap_plane_state, base)
+
+struct omap_plane_state {
+	/* Must be first. */
+	struct drm_plane_state base;
+
+	struct omap_hw_overlay *overlay;
+	struct omap_hw_overlay *r_overlay;  /* right overlay */
+};
+
+#define to_omap_plane(x) container_of(x, struct omap_plane, base)
+
+struct omap_plane {
+	struct drm_plane base;
+	enum omap_plane_id id;
+};
+
+bool is_omap_plane_dual_overlay(struct drm_plane_state *state)
+{
+	struct omap_plane_state *omap_state = to_omap_plane_state(state);
+
+	return !!omap_state->r_overlay;
+}
+
+static int omap_plane_prepare_fb(struct drm_plane *plane,
+				 struct drm_plane_state *new_state)
+{
+	if (!new_state->fb)
+		return 0;
+
+	drm_gem_plane_helper_prepare_fb(plane, new_state);
+
+	return omap_framebuffer_pin(new_state->fb);
+}
+
+static void omap_plane_cleanup_fb(struct drm_plane *plane,
+				  struct drm_plane_state *old_state)
+{
+	if (old_state->fb)
+		omap_framebuffer_unpin(old_state->fb);
+}
+
+static void omap_plane_atomic_update(struct drm_plane *plane,
+				     struct drm_atomic_state *state)
+{
+	struct omap_drm_private *priv = plane->dev->dev_private;
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
+									   plane);
+	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
+									   plane);
+	struct omap_plane_state *new_omap_state;
+	struct omap_plane_state *old_omap_state;
+	struct omap_overlay_info info, r_info;
+	enum omap_plane_id ovl_id, r_ovl_id;
+	int ret;
+	bool dual_ovl;
+
+	new_omap_state = to_omap_plane_state(new_state);
+	old_omap_state = to_omap_plane_state(old_state);
+
+	dual_ovl = is_omap_plane_dual_overlay(new_state);
+
+	/* Cleanup previously held overlay if needed */
+	if (old_omap_state->overlay)
+		omap_overlay_update_state(priv, old_omap_state->overlay);
+	if (old_omap_state->r_overlay)
+		omap_overlay_update_state(priv, old_omap_state->r_overlay);
+
+	if (!new_omap_state->overlay) {
+		DBG("[PLANE:%d:%s] no overlay attached", plane->base.id, plane->name);
+		return;
+	}
+
+	ovl_id = new_omap_state->overlay->id;
+	DBG("%s, crtc=%p fb=%p", plane->name, new_state->crtc,
+	    new_state->fb);
+
+	memset(&info, 0, sizeof(info));
+	info.rotation_type = OMAP_DSS_ROT_NONE;
+	info.rotation = DRM_MODE_ROTATE_0;
+	info.global_alpha = new_state->alpha >> 8;
+	info.zorder = new_state->normalized_zpos;
+	if (new_state->pixel_blend_mode == DRM_MODE_BLEND_PREMULTI)
+		info.pre_mult_alpha = 1;
+	else
+		info.pre_mult_alpha = 0;
+	info.color_encoding = new_state->color_encoding;
+	info.color_range = new_state->color_range;
+
+	r_info = info;
+
+	/* update scanout: */
+	omap_framebuffer_update_scanout(new_state->fb, new_state, &info,
+					dual_ovl ? &r_info : NULL);
+
+	DBG("%s: %dx%d -> %dx%d (%d)",
+			new_omap_state->overlay->name, info.width, info.height,
+			info.out_width, info.out_height, info.screen_width);
+	DBG("%d,%d %pad %pad", info.pos_x, info.pos_y,
+			&info.paddr, &info.p_uv_addr);
+
+	if (dual_ovl) {
+		r_ovl_id = new_omap_state->r_overlay->id;
+		/*
+		 * If the current plane uses 2 hw planes the very next
+		 * zorder is used by the r_overlay so we just use the
+		 * main overlay zorder + 1
+		 */
+		r_info.zorder = info.zorder + 1;
+
+		DBG("%s: %dx%d -> %dx%d (%d)",
+		    new_omap_state->r_overlay->name,
+		    r_info.width, r_info.height,
+		    r_info.out_width, r_info.out_height, r_info.screen_width);
+		DBG("%d,%d %pad %pad", r_info.pos_x, r_info.pos_y,
+		    &r_info.paddr, &r_info.p_uv_addr);
+	}
+
+	/* and finally, update omapdss: */
+	ret = dispc_ovl_setup(priv->dispc, ovl_id, &info,
+			      omap_crtc_timings(new_state->crtc), false,
+			      omap_crtc_channel(new_state->crtc));
+	if (ret) {
+		dev_err(plane->dev->dev, "Failed to setup plane %s\n",
+			plane->name);
+		dispc_ovl_enable(priv->dispc, ovl_id, false);
+		return;
+	}
+
+	dispc_ovl_enable(priv->dispc, ovl_id, true);
+
+	if (dual_ovl) {
+		ret = dispc_ovl_setup(priv->dispc, r_ovl_id, &r_info,
+				      omap_crtc_timings(new_state->crtc), false,
+				      omap_crtc_channel(new_state->crtc));
+		if (ret) {
+			dev_err(plane->dev->dev, "Failed to setup plane right-overlay %s\n",
+				plane->name);
+			dispc_ovl_enable(priv->dispc, r_ovl_id, false);
+			dispc_ovl_enable(priv->dispc, ovl_id, false);
+			return;
+		}
+
+		dispc_ovl_enable(priv->dispc, r_ovl_id, true);
+	}
+}
+
+static void omap_plane_atomic_disable(struct drm_plane *plane,
+				      struct drm_atomic_state *state)
+{
+	struct omap_drm_private *priv = plane->dev->dev_private;
+	struct omap_plane *omap_plane = to_omap_plane(plane);
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
+									   plane);
+	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
+									   plane);
+	struct omap_plane_state *new_omap_state;
+	struct omap_plane_state *old_omap_state;
+
+	new_omap_state = to_omap_plane_state(new_state);
+	old_omap_state = to_omap_plane_state(old_state);
+
+	if (!old_omap_state->overlay)
+		return;
+
+	new_state->rotation = DRM_MODE_ROTATE_0;
+	new_state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : omap_plane->id;
+
+	omap_overlay_update_state(priv, old_omap_state->overlay);
+	new_omap_state->overlay = NULL;
+
+	if (is_omap_plane_dual_overlay(old_state)) {
+		omap_overlay_update_state(priv, old_omap_state->r_overlay);
+		new_omap_state->r_overlay = NULL;
+	}
+}
+
+#define FRAC_16_16(mult, div)    (((mult) << 16) / (div))
+
+static int omap_plane_atomic_check(struct drm_plane *plane,
+				   struct drm_atomic_state *state)
+{
+	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
+										 plane);
+	struct drm_plane_state *old_plane_state = drm_atomic_get_old_plane_state(state,
+										 plane);
+	struct omap_drm_private *priv = plane->dev->dev_private;
+	struct omap_plane_state *omap_state = to_omap_plane_state(new_plane_state);
+	struct omap_global_state *omap_overlay_global_state;
+	struct drm_crtc_state *crtc_state;
+	bool new_r_hw_overlay = false;
+	bool new_hw_overlay = false;
+	u32 max_width, max_height;
+	struct drm_crtc *crtc;
+	u16 width, height;
+	u32 caps = 0;
+	u32 fourcc;
+	int ret;
+
+	omap_overlay_global_state = omap_get_global_state(state);
+	if (IS_ERR(omap_overlay_global_state))
+		return PTR_ERR(omap_overlay_global_state);
+
+	dispc_ovl_get_max_size(priv->dispc, &width, &height);
+	max_width = width << 16;
+	max_height = height << 16;
+
+	crtc = new_plane_state->crtc ? new_plane_state->crtc : plane->state->crtc;
+	if (!crtc)
+		return 0;
+
+	crtc_state = drm_atomic_get_existing_crtc_state(state, crtc);
+	/* we should have a crtc state if the plane is attached to a crtc */
+	if (WARN_ON(!crtc_state))
+		return 0;
+
+	/*
+	 * Note: these are just sanity checks to filter out totally bad scaling
+	 * factors. The real limits must be calculated case by case, and
+	 * unfortunately we currently do those checks only at the commit
+	 * phase in dispc.
+	 */
+	ret = drm_atomic_helper_check_plane_state(new_plane_state, crtc_state,
+						  FRAC_16_16(1, 8), FRAC_16_16(8, 1),
+						  true, true);
+	if (ret)
+		return ret;
+
+	DBG("%s: visible %d -> %d", plane->name,
+	    old_plane_state->visible, new_plane_state->visible);
+
+	if (!new_plane_state->visible) {
+		omap_overlay_release(state, omap_state->overlay);
+		omap_overlay_release(state, omap_state->r_overlay);
+		omap_state->overlay = NULL;
+		omap_state->r_overlay = NULL;
+		return 0;
+	}
+
+	if (new_plane_state->crtc_x < 0 || new_plane_state->crtc_y < 0)
+		return -EINVAL;
+
+	if (new_plane_state->crtc_x + new_plane_state->crtc_w > crtc_state->adjusted_mode.hdisplay)
+		return -EINVAL;
+
+	if (new_plane_state->crtc_y + new_plane_state->crtc_h > crtc_state->adjusted_mode.vdisplay)
+		return -EINVAL;
+
+	/* Make sure dimensions are within bounds. */
+	if (new_plane_state->src_h > max_height || new_plane_state->crtc_h > height)
+		return -EINVAL;
+
+
+	if (new_plane_state->src_w > max_width || new_plane_state->crtc_w > width) {
+		bool is_fourcc_yuv = new_plane_state->fb->format->is_yuv;
+
+		if (is_fourcc_yuv && (((new_plane_state->src_w >> 16) / 2 & 1) ||
+				      new_plane_state->crtc_w / 2 & 1)) {
+			/*
+			 * When calculating the split overlay width
+			 * and it yield an odd value we will need to adjust
+			 * the indivual width +/- 1. So make sure it fits
+			 */
+			if (new_plane_state->src_w <= ((2 * width - 1) << 16) &&
+			    new_plane_state->crtc_w <= (2 * width - 1))
+				new_r_hw_overlay = true;
+			else
+				return -EINVAL;
+		} else {
+			if (new_plane_state->src_w <= (2 * max_width) &&
+			    new_plane_state->crtc_w <= (2 * width))
+				new_r_hw_overlay = true;
+			else
+				return -EINVAL;
+		}
+	}
+
+	if (new_plane_state->rotation != DRM_MODE_ROTATE_0 &&
+	    !omap_framebuffer_supports_rotation(new_plane_state->fb))
+		return -EINVAL;
+
+	if ((new_plane_state->src_w >> 16) != new_plane_state->crtc_w ||
+	    (new_plane_state->src_h >> 16) != new_plane_state->crtc_h)
+		caps |= OMAP_DSS_OVL_CAP_SCALE;
+
+	fourcc = new_plane_state->fb->format->format;
+
+	/*
+	 * (re)allocate hw overlay if we don't have one or
+	 * there is a caps mismatch
+	 */
+	if (!omap_state->overlay || (caps & ~omap_state->overlay->caps)) {
+		new_hw_overlay = true;
+	} else {
+		/* check supported format */
+		if (!dispc_ovl_color_mode_supported(priv->dispc, omap_state->overlay->id,
+						    fourcc))
+			new_hw_overlay = true;
+	}
+
+	/*
+	 * check if we need two overlays and only have 1 or
+	 * if we had 2 overlays but will only need 1
+	 */
+	if ((new_r_hw_overlay && !omap_state->r_overlay) ||
+	    (!new_r_hw_overlay && omap_state->r_overlay))
+		new_hw_overlay = true;
+
+	if (new_hw_overlay) {
+		struct omap_hw_overlay *old_ovl = omap_state->overlay;
+		struct omap_hw_overlay *old_r_ovl = omap_state->r_overlay;
+		struct omap_hw_overlay *new_ovl = NULL;
+		struct omap_hw_overlay *new_r_ovl = NULL;
+
+		omap_overlay_release(state, old_ovl);
+		omap_overlay_release(state, old_r_ovl);
+
+		ret = omap_overlay_assign(state, plane, caps, fourcc, &new_ovl,
+					  new_r_hw_overlay ? &new_r_ovl : NULL);
+		if (ret) {
+			DBG("%s: failed to assign hw_overlay", plane->name);
+			omap_state->overlay = NULL;
+			omap_state->r_overlay = NULL;
+			return ret;
+		}
+
+		omap_state->overlay = new_ovl;
+		if (new_r_hw_overlay)
+			omap_state->r_overlay = new_r_ovl;
+		else
+			omap_state->r_overlay = NULL;
+	}
+
+	DBG("plane: %s overlay_id: %d", plane->name, omap_state->overlay->id);
+
+	if (omap_state->r_overlay)
+		DBG("plane: %s r_overlay_id: %d", plane->name, omap_state->r_overlay->id);
+
+	return 0;
+}
+
+static const struct drm_plane_helper_funcs omap_plane_helper_funcs = {
+	.prepare_fb = omap_plane_prepare_fb,
+	.cleanup_fb = omap_plane_cleanup_fb,
+	.atomic_check = omap_plane_atomic_check,
+	.atomic_update = omap_plane_atomic_update,
+	.atomic_disable = omap_plane_atomic_disable,
+};
+
+static void omap_plane_destroy(struct drm_plane *plane)
+{
+	struct omap_plane *omap_plane = to_omap_plane(plane);
+
+	DBG("%s", plane->name);
+
+	drm_plane_cleanup(plane);
+
+	kfree(omap_plane);
+}
+
+/* helper to install properties which are common to planes and crtcs */
+void omap_plane_install_properties(struct drm_plane *plane,
+		struct drm_mode_object *obj)
+{
+	struct drm_device *dev = plane->dev;
+	struct omap_drm_private *priv = dev->dev_private;
+
+	if (priv->has_dmm) {
+		if (!plane->rotation_property)
+			drm_plane_create_rotation_property(plane,
+							   DRM_MODE_ROTATE_0,
+							   DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_90 |
+							   DRM_MODE_ROTATE_180 | DRM_MODE_ROTATE_270 |
+							   DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y);
+
+		/* Attach the rotation property also to the crtc object */
+		if (plane->rotation_property && obj != &plane->base)
+			drm_object_attach_property(obj, plane->rotation_property,
+						   DRM_MODE_ROTATE_0);
+	}
+
+	drm_object_attach_property(obj, priv->zorder_prop, 0);
+}
+
+static void omap_plane_reset(struct drm_plane *plane)
+{
+	struct omap_plane_state *omap_state;
+
+	if (plane->state)
+		drm_atomic_helper_plane_destroy_state(plane, plane->state);
+
+	omap_state = kzalloc(sizeof(*omap_state), GFP_KERNEL);
+	if (!omap_state)
+		return;
+
+	__drm_atomic_helper_plane_reset(plane, &omap_state->base);
+}
+
+static struct drm_plane_state *
+omap_plane_atomic_duplicate_state(struct drm_plane *plane)
+{
+	struct omap_plane_state *state, *current_state;
+
+	if (WARN_ON(!plane->state))
+		return NULL;
+
+	current_state = to_omap_plane_state(plane->state);
+
+	state = kmalloc(sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return NULL;
+
+	__drm_atomic_helper_plane_duplicate_state(plane, &state->base);
+
+	state->overlay = current_state->overlay;
+	state->r_overlay = current_state->r_overlay;
+
+	return &state->base;
+}
+
+static void omap_plane_atomic_print_state(struct drm_printer *p,
+					  const struct drm_plane_state *state)
+{
+	struct omap_plane_state *omap_state = to_omap_plane_state(state);
+
+	if (omap_state->overlay)
+		drm_printf(p, "\toverlay=%s (caps=0x%x)\n",
+			   omap_state->overlay->name,
+			   omap_state->overlay->caps);
+	else
+		drm_printf(p, "\toverlay=None\n");
+	if (omap_state->r_overlay)
+		drm_printf(p, "\tr_overlay=%s (caps=0x%x)\n",
+			   omap_state->r_overlay->name,
+			   omap_state->r_overlay->caps);
+	else
+		drm_printf(p, "\tr_overlay=None\n");
+}
+
+static int omap_plane_atomic_set_property(struct drm_plane *plane,
+					  struct drm_plane_state *state,
+					  struct drm_property *property,
+					  u64 val)
+{
+	struct omap_drm_private *priv = plane->dev->dev_private;
+
+	if (property == priv->zorder_prop)
+		state->zpos = val;
+	else
+		return -EINVAL;
+
+	return 0;
+}
+
+static int omap_plane_atomic_get_property(struct drm_plane *plane,
+					  const struct drm_plane_state *state,
+					  struct drm_property *property,
+					  u64 *val)
+{
+	struct omap_drm_private *priv = plane->dev->dev_private;
+
+	if (property == priv->zorder_prop)
+		*val = state->zpos;
+	else
+		return -EINVAL;
+
+	return 0;
+}
+
+static const struct drm_plane_funcs omap_plane_funcs = {
+	.update_plane = drm_atomic_helper_update_plane,
+	.disable_plane = drm_atomic_helper_disable_plane,
+	.reset = omap_plane_reset,
+	.destroy = omap_plane_destroy,
+	.atomic_duplicate_state = omap_plane_atomic_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+	.atomic_set_property = omap_plane_atomic_set_property,
+	.atomic_get_property = omap_plane_atomic_get_property,
+	.atomic_print_state = omap_plane_atomic_print_state,
+};
+
+static bool omap_plane_supports_yuv(struct drm_plane *plane)
+{
+	struct omap_drm_private *priv = plane->dev->dev_private;
+	struct omap_plane *omap_plane = to_omap_plane(plane);
+	const u32 *formats = dispc_ovl_get_color_modes(priv->dispc, omap_plane->id);
+	u32 i;
+
+	for (i = 0; formats[i]; i++)
+		if (formats[i] == DRM_FORMAT_YUYV ||
+		    formats[i] == DRM_FORMAT_UYVY ||
+		    formats[i] == DRM_FORMAT_NV12)
+			return true;
+
+	return false;
+}
+
+/* initialize plane */
+struct drm_plane *omap_plane_init(struct drm_device *dev,
+		int idx, enum drm_plane_type type,
+		u32 possible_crtcs)
+{
+	struct omap_drm_private *priv = dev->dev_private;
+	unsigned int num_planes = dispc_get_num_ovls(priv->dispc);
+	struct drm_plane *plane;
+	struct omap_plane *omap_plane;
+	unsigned int zpos;
+	int ret;
+	u32 nformats;
+	const u32 *formats;
+
+	if (WARN_ON(idx >= num_planes))
+		return ERR_PTR(-EINVAL);
+
+	omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL);
+	if (!omap_plane)
+		return ERR_PTR(-ENOMEM);
+
+	omap_plane->id = idx;
+
+	DBG("%d: type=%d", omap_plane->id, type);
+	DBG("	crtc_mask: 0x%04x", possible_crtcs);
+
+	formats = dispc_ovl_get_color_modes(priv->dispc, omap_plane->id);
+	for (nformats = 0; formats[nformats]; ++nformats)
+		;
+
+	plane = &omap_plane->base;
+
+	ret = drm_universal_plane_init(dev, plane, possible_crtcs,
+				       &omap_plane_funcs, formats,
+				       nformats, NULL, type, NULL);
+	if (ret < 0)
+		goto error;
+
+	drm_plane_helper_add(plane, &omap_plane_helper_funcs);
+
+	omap_plane_install_properties(plane, &plane->base);
+
+	/*
+	 * Set the zpos default depending on whether we are a primary or overlay
+	 * plane.
+	 */
+	if (plane->type == DRM_PLANE_TYPE_PRIMARY)
+		zpos = 0;
+	else
+		zpos = omap_plane->id;
+	drm_plane_create_zpos_property(plane, zpos, 0, num_planes - 1);
+	drm_plane_create_alpha_property(plane);
+	drm_plane_create_blend_mode_property(plane, BIT(DRM_MODE_BLEND_PREMULTI) |
+					     BIT(DRM_MODE_BLEND_COVERAGE));
+
+	if (omap_plane_supports_yuv(plane))
+		drm_plane_create_color_properties(plane,
+						  BIT(DRM_COLOR_YCBCR_BT601) |
+						  BIT(DRM_COLOR_YCBCR_BT709),
+						  BIT(DRM_COLOR_YCBCR_FULL_RANGE) |
+						  BIT(DRM_COLOR_YCBCR_LIMITED_RANGE),
+						  DRM_COLOR_YCBCR_BT601,
+						  DRM_COLOR_YCBCR_FULL_RANGE);
+
+	return plane;
+
+error:
+	dev_err(dev->dev, "%s(): could not create plane: %d\n",
+		__func__, omap_plane->id);
+
+	kfree(omap_plane);
+	return NULL;
+}