kernel_samsung_a34x-permissive/drivers/gpu/drm/omapdrm/omap_plane.c

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/*
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
* Author: Rob Clark <rob.clark@linaro.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#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 = 0xff;
info.zorder = state->normalized_zpos;
/* 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);
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;
}