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drm/tegra: dc: Dedicate overlay plane to cursor on older Tegra's

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Older Tegra's do not support RGBA format for the cursor, but instead
overlay plane could be used for it. Since there is no much use for the
overlays on a regular desktop and HW-accelerated cursor is much better
than a SW cursor, let's dedicate one overlay plane to the mouse cursor.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Dmitry Osipenko 2018-03-15 04:00:25 +03:00 committed by Thierry Reding
parent 5e2e86f12c
commit 9f446d83b2
1 changed files with 25 additions and 5 deletions
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30
drivers/gpu/drm/tegra/dc.c
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@ -864,11 +864,13 @@ static const u32 tegra124_overlay_formats[] = {
static struct drm_plane *tegra_dc_overlay_plane_create(struct drm_device *drm,
struct tegra_dc *dc,
unsigned int index)
unsigned int index,
bool cursor)
{
unsigned long possible_crtcs = tegra_plane_get_possible_crtcs(drm);
struct tegra_plane *plane;
unsigned int num_formats;
enum drm_plane_type type;
const u32 *formats;
int err;
@ -883,10 +885,14 @@ static struct drm_plane *tegra_dc_overlay_plane_create(struct drm_device *drm,
num_formats = dc->soc->num_overlay_formats;
formats = dc->soc->overlay_formats;
if (!cursor)
type = DRM_PLANE_TYPE_OVERLAY;
else
type = DRM_PLANE_TYPE_CURSOR;
err = drm_universal_plane_init(drm, &plane->base, possible_crtcs,
&tegra_plane_funcs, formats,
num_formats, NULL,
DRM_PLANE_TYPE_OVERLAY, NULL);
num_formats, NULL, type, NULL);
if (err < 0) {
kfree(plane);
return ERR_PTR(err);
@ -938,6 +944,7 @@ static struct drm_plane *tegra_dc_add_planes(struct drm_device *drm,
struct tegra_dc *dc)
{
struct drm_plane *planes[2], *primary;
unsigned int planes_num;
unsigned int i;
int err;
@ -945,8 +952,14 @@ static struct drm_plane *tegra_dc_add_planes(struct drm_device *drm,
if (IS_ERR(primary))
return primary;
for (i = 0; i < 2; i++) {
planes[i] = tegra_dc_overlay_plane_create(drm, dc, 1 + i);
if (dc->soc->supports_cursor)
planes_num = 2;
else
planes_num = 1;
for (i = 0; i < planes_num; i++) {
planes[i] = tegra_dc_overlay_plane_create(drm, dc, 1 + i,
false);
if (IS_ERR(planes[i])) {
err = PTR_ERR(planes[i]);
@ -1864,6 +1877,13 @@ static int tegra_dc_init(struct host1x_client *client)
err = PTR_ERR(cursor);
goto cleanup;
}
} else {
/* dedicate one overlay to mouse cursor */
cursor = tegra_dc_overlay_plane_create(drm, dc, 2, true);
if (IS_ERR(cursor)) {
err = PTR_ERR(cursor);
goto cleanup;
}
}
err = drm_crtc_init_with_planes(drm, &dc->base, primary, cursor,