linux/drivers/gpu/drm/omapdrm/omap_plane.c
Jyri Sarha e8e13b1521 drm/omap: Major omap_modeset_init() cleanup
Cleanup overly complex omap_modeset_init(). The function is trying to
support many unusual configuration, that have never been tested and
are not supported by other parts of the dirver.

After cleanup the init function creates exactly one connector,
encoder, crtc, and primary plane per each connected dss-device. Each
connector->encoder->crtc chain is expected to be separate and each
crtc is connect to a single dss-channel. If the configuration does not
match the expectations or exceeds the available resources, the
configuration is rejected.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-04-03 12:36:40 +03:00

390 lines
10 KiB
C

/*
* drivers/gpu/drm/omapdrm/omap_plane.c
*
* Copyright (C) 2011 Texas Instruments
* 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;
uint32_t nformats;
uint32_t formats[32];
};
struct omap_plane_state {
struct drm_plane_state base;
unsigned int zorder;
};
static inline struct omap_plane_state *
to_omap_plane_state(struct drm_plane_state *state)
{
return container_of(state, struct omap_plane_state, base);
}
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_plane_state *omap_state = to_omap_plane_state(state);
struct omap_overlay_info info;
struct omap_drm_window win;
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_DMA;
info.rotation = OMAP_DSS_ROT_0;
info.global_alpha = 0xff;
info.mirror = 0;
info.zorder = omap_state->zorder;
memset(&win, 0, sizeof(win));
win.rotation = state->rotation;
win.crtc_x = state->crtc_x;
win.crtc_y = state->crtc_y;
win.crtc_w = state->crtc_w;
win.crtc_h = state->crtc_h;
/*
* src values are in Q16 fixed point, convert to integer.
* omap_framebuffer_update_scanout() takes adjusted src.
*/
win.src_x = state->src_x >> 16;
win.src_y = state->src_y >> 16;
if (drm_rotation_90_or_270(state->rotation)) {
win.src_w = state->src_h >> 16;
win.src_h = state->src_w >> 16;
} else {
win.src_w = state->src_w >> 16;
win.src_h = state->src_h >> 16;
}
/* update scanout: */
omap_framebuffer_update_scanout(state->fb, &win, &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);
priv->dispc_ops->ovl_set_channel_out(omap_plane->id,
omap_crtc_channel(state->crtc));
/* and finally, update omapdss: */
ret = priv->dispc_ops->ovl_setup(omap_plane->id, &info,
omap_crtc_timings(state->crtc), false);
if (ret) {
dev_err(plane->dev->dev, "Failed to setup plane %s\n",
omap_plane->name);
priv->dispc_ops->ovl_enable(omap_plane->id, false);
return;
}
priv->dispc_ops->ovl_enable(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_state *omap_state = to_omap_plane_state(plane->state);
struct omap_plane *omap_plane = to_omap_plane(plane);
plane->state->rotation = DRM_ROTATE_0;
omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
? 0 : omap_plane->id;
priv->dispc_ops->ovl_enable(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_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_ROTATE_0,
DRM_ROTATE_0 | DRM_ROTATE_90 |
DRM_ROTATE_180 | DRM_ROTATE_270 |
DRM_REFLECT_X | DRM_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_ROTATE_0);
}
drm_object_attach_property(obj, priv->zorder_prop, 0);
}
static struct drm_plane_state *
omap_plane_atomic_duplicate_state(struct drm_plane *plane)
{
struct omap_plane_state *state;
struct omap_plane_state *copy;
if (WARN_ON(!plane->state))
return NULL;
state = to_omap_plane_state(plane->state);
copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
if (copy == NULL)
return NULL;
__drm_atomic_helper_plane_duplicate_state(plane, &copy->base);
return &copy->base;
}
static void omap_plane_atomic_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
__drm_atomic_helper_plane_destroy_state(state);
kfree(to_omap_plane_state(state));
}
static void omap_plane_reset(struct drm_plane *plane)
{
struct omap_plane *omap_plane = to_omap_plane(plane);
struct omap_plane_state *omap_state;
if (plane->state) {
omap_plane_atomic_destroy_state(plane, plane->state);
plane->state = NULL;
}
omap_state = kzalloc(sizeof(*omap_state), GFP_KERNEL);
if (omap_state == NULL)
return;
/*
* Set defaults depending on whether we are a primary or overlay
* plane.
*/
omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
? 0 : omap_plane->id;
omap_state->base.rotation = DRM_ROTATE_0;
plane->state = &omap_state->base;
plane->state->plane = plane;
}
static int omap_plane_atomic_set_property(struct drm_plane *plane,
struct drm_plane_state *state,
struct drm_property *property,
uint64_t val)
{
struct omap_drm_private *priv = plane->dev->dev_private;
struct omap_plane_state *omap_state = to_omap_plane_state(state);
if (property == priv->zorder_prop)
omap_state->zorder = 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,
uint64_t *val)
{
struct omap_drm_private *priv = plane->dev->dev_private;
const struct omap_plane_state *omap_state =
container_of(state, const struct omap_plane_state, base);
if (property == priv->zorder_prop)
*val = omap_state->zorder;
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,
.set_property = drm_atomic_helper_plane_set_property,
.atomic_duplicate_state = omap_plane_atomic_duplicate_state,
.atomic_destroy_state = omap_plane_atomic_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;
struct drm_plane *plane;
struct omap_plane *omap_plane;
enum omap_plane_id id;
int ret;
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);
omap_plane->nformats = omap_framebuffer_get_formats(
omap_plane->formats, ARRAY_SIZE(omap_plane->formats),
priv->dispc_ops->ovl_get_color_modes(id));
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, omap_plane->formats,
omap_plane->nformats, type, NULL);
if (ret < 0)
goto error;
drm_plane_helper_add(plane, &omap_plane_helper_funcs);
omap_plane_install_properties(plane, &plane->base);
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;
}