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- // SPDX-License-Identifier: GPL-2.0-only
- /*
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
- * Author: Rob Clark <rob.clark@linaro.org>
- */
- #include <drm/drm_atomic.h>
- #include <drm/drm_atomic_helper.h>
- #include <drm/drm_plane_helper.h>
- #include "omap_dmm_tiler.h"
- #include "omap_drv.h"
- /*
- * plane funcs
- */
- #define to_omap_plane(x) container_of(x, struct omap_plane, base)
- struct omap_plane {
- struct drm_plane base;
- enum omap_plane_id id;
- const char *name;
- };
- static int omap_plane_prepare_fb(struct drm_plane *plane,
- struct drm_plane_state *new_state)
- {
- if (!new_state->fb)
- return 0;
- 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_plane_state *old_state)
- {
- struct omap_drm_private *priv = plane->dev->dev_private;
- struct omap_plane *omap_plane = to_omap_plane(plane);
- struct drm_plane_state *state = plane->state;
- struct omap_overlay_info info;
- int ret;
- DBG("%s, crtc=%p fb=%p", omap_plane->name, state->crtc, state->fb);
- memset(&info, 0, sizeof(info));
- info.rotation_type = OMAP_DSS_ROT_NONE;
- info.rotation = DRM_MODE_ROTATE_0;
- info.global_alpha = state->alpha >> 8;
- info.zorder = state->normalized_zpos;
- if (state->pixel_blend_mode == DRM_MODE_BLEND_PREMULTI)
- info.pre_mult_alpha = 1;
- else
- info.pre_mult_alpha = 0;
- /* update scanout: */
- omap_framebuffer_update_scanout(state->fb, state, &info);
- DBG("%dx%d -> %dx%d (%d)", 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);
- /* and finally, update omapdss: */
- ret = priv->dispc_ops->ovl_setup(priv->dispc, omap_plane->id, &info,
- omap_crtc_timings(state->crtc), false,
- omap_crtc_channel(state->crtc));
- if (ret) {
- dev_err(plane->dev->dev, "Failed to setup plane %s\n",
- omap_plane->name);
- priv->dispc_ops->ovl_enable(priv->dispc, omap_plane->id, false);
- return;
- }
- priv->dispc_ops->ovl_enable(priv->dispc, omap_plane->id, true);
- }
- static void omap_plane_atomic_disable(struct drm_plane *plane,
- struct drm_plane_state *old_state)
- {
- struct omap_drm_private *priv = plane->dev->dev_private;
- struct omap_plane *omap_plane = to_omap_plane(plane);
- plane->state->rotation = DRM_MODE_ROTATE_0;
- plane->state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY
- ? 0 : omap_plane->id;
- priv->dispc_ops->ovl_enable(priv->dispc, omap_plane->id, false);
- }
- static int omap_plane_atomic_check(struct drm_plane *plane,
- struct drm_plane_state *state)
- {
- struct drm_crtc_state *crtc_state;
- if (!state->fb)
- return 0;
- /* crtc should only be NULL when disabling (i.e., !state->fb) */
- if (WARN_ON(!state->crtc))
- return 0;
- crtc_state = drm_atomic_get_existing_crtc_state(state->state, 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->enable)
- return 0;
- if (state->crtc_x < 0 || state->crtc_y < 0)
- return -EINVAL;
- if (state->crtc_x + state->crtc_w > crtc_state->adjusted_mode.hdisplay)
- return -EINVAL;
- if (state->crtc_y + state->crtc_h > crtc_state->adjusted_mode.vdisplay)
- return -EINVAL;
- if (state->rotation != DRM_MODE_ROTATE_0 &&
- !omap_framebuffer_supports_rotation(state->fb))
- return -EINVAL;
- 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", omap_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 *omap_plane = to_omap_plane(plane);
- drm_atomic_helper_plane_reset(plane);
- if (!plane->state)
- return;
- /*
- * Set the zpos default depending on whether we are a primary or overlay
- * plane.
- */
- plane->state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY
- ? 0 : omap_plane->id;
- }
- 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 = drm_atomic_helper_plane_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,
- };
- static const char *plane_id_to_name[] = {
- [OMAP_DSS_GFX] = "gfx",
- [OMAP_DSS_VIDEO1] = "vid1",
- [OMAP_DSS_VIDEO2] = "vid2",
- [OMAP_DSS_VIDEO3] = "vid3",
- };
- static const enum omap_plane_id plane_idx_to_id[] = {
- OMAP_DSS_GFX,
- OMAP_DSS_VIDEO1,
- OMAP_DSS_VIDEO2,
- OMAP_DSS_VIDEO3,
- };
- /* 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 = priv->dispc_ops->get_num_ovls(priv->dispc);
- struct drm_plane *plane;
- struct omap_plane *omap_plane;
- enum omap_plane_id id;
- int ret;
- u32 nformats;
- const u32 *formats;
- if (WARN_ON(idx >= ARRAY_SIZE(plane_idx_to_id)))
- return ERR_PTR(-EINVAL);
- id = plane_idx_to_id[idx];
- DBG("%s: type=%d", plane_id_to_name[id], type);
- omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL);
- if (!omap_plane)
- return ERR_PTR(-ENOMEM);
- formats = priv->dispc_ops->ovl_get_color_modes(priv->dispc, id);
- for (nformats = 0; formats[nformats]; ++nformats)
- ;
- omap_plane->id = id;
- omap_plane->name = plane_id_to_name[id];
- 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);
- drm_plane_create_zpos_property(plane, 0, 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));
- return plane;
- error:
- dev_err(dev->dev, "%s(): could not create plane: %s\n",
- __func__, plane_id_to_name[id]);
- kfree(omap_plane);
- return NULL;
- }
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