static int mdp4_crtc_cursor_set(struct drm_crtc *crtc,
struct drm_file *file_priv, uint32_t handle,
uint32_t width, uint32_t height)
{
struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
struct mdp4_kms *mdp4_kms = get_kms(crtc);
struct drm_device *dev = crtc->dev;
struct drm_gem_object *cursor_bo, *old_bo;
unsigned long flags;
uint32_t iova;
int ret;
if ((width > CURSOR_WIDTH) || (height > CURSOR_HEIGHT)) {
dev_err(dev->dev, "bad cursor size: %dx%d\n", width, height);
return -EINVAL;
}
if (handle) {
cursor_bo = drm_gem_object_lookup(dev, file_priv, handle);
if (!cursor_bo)
return -ENOENT;
} else {
cursor_bo = NULL;
}
if (cursor_bo) {
ret = msm_gem_get_iova(cursor_bo, mdp4_kms->id, &iova);
if (ret)
goto fail;
} else {
iova = 0;
}
spin_lock_irqsave(&mdp4_crtc->cursor.lock, flags);
old_bo = mdp4_crtc->cursor.next_bo;
mdp4_crtc->cursor.next_bo = cursor_bo;
mdp4_crtc->cursor.next_iova = iova;
mdp4_crtc->cursor.width = width;
mdp4_crtc->cursor.height = height;
mdp4_crtc->cursor.stale = true;
spin_unlock_irqrestore(&mdp4_crtc->cursor.lock, flags);
if (old_bo) {
/* drop our previous reference: */
drm_flip_work_queue(&mdp4_crtc->unref_cursor_work, old_bo);
}
request_pending(crtc, PENDING_CURSOR);
return 0;
fail:
drm_gem_object_unreference_unlocked(cursor_bo);
return ret;
}
static void update_fb(struct drm_crtc *crtc, struct drm_framebuffer *new_fb)
{
struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
struct drm_framebuffer *old_fb = mdp4_crtc->fb;
/* grab reference to incoming scanout fb: */
drm_framebuffer_reference(new_fb);
mdp4_crtc->base.primary->fb = new_fb;
mdp4_crtc->fb = new_fb;
if (old_fb)
drm_flip_work_queue(&mdp4_crtc->unref_fb_work, old_fb);
}
/* called from IRQ to update cursor related registers (if needed). The
* cursor registers, other than x/y position, appear not to be double
* buffered, and changing them other than from vblank seems to trigger
* underflow.
*/
static void update_cursor(struct drm_crtc *crtc)
{
struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
struct mdp4_kms *mdp4_kms = get_kms(crtc);
enum mdp4_dma dma = mdp4_crtc->dma;
unsigned long flags;
spin_lock_irqsave(&mdp4_crtc->cursor.lock, flags);
if (mdp4_crtc->cursor.stale) {
struct drm_gem_object *next_bo = mdp4_crtc->cursor.next_bo;
struct drm_gem_object *prev_bo = mdp4_crtc->cursor.scanout_bo;
uint32_t iova = mdp4_crtc->cursor.next_iova;
if (next_bo) {
/* take a obj ref + iova ref when we start scanning out: */
drm_gem_object_reference(next_bo);
msm_gem_get_iova_locked(next_bo, mdp4_kms->id, &iova);
/* enable cursor: */
mdp4_write(mdp4_kms, REG_MDP4_DMA_CURSOR_SIZE(dma),
MDP4_DMA_CURSOR_SIZE_WIDTH(mdp4_crtc->cursor.width) |
MDP4_DMA_CURSOR_SIZE_HEIGHT(mdp4_crtc->cursor.height));
mdp4_write(mdp4_kms, REG_MDP4_DMA_CURSOR_BASE(dma), iova);
mdp4_write(mdp4_kms, REG_MDP4_DMA_CURSOR_BLEND_CONFIG(dma),
MDP4_DMA_CURSOR_BLEND_CONFIG_FORMAT(CURSOR_ARGB) |
MDP4_DMA_CURSOR_BLEND_CONFIG_CURSOR_EN);
} else {
/* disable cursor: */
mdp4_write(mdp4_kms, REG_MDP4_DMA_CURSOR_BASE(dma),
mdp4_kms->blank_cursor_iova);
}
/* and drop the iova ref + obj rev when done scanning out: */
if (prev_bo)
drm_flip_work_queue(&mdp4_crtc->unref_cursor_work, prev_bo);
mdp4_crtc->cursor.scanout_bo = next_bo;
mdp4_crtc->cursor.stale = false;
}
mdp4_write(mdp4_kms, REG_MDP4_DMA_CURSOR_POS(dma),
MDP4_DMA_CURSOR_POS_X(mdp4_crtc->cursor.x) |
MDP4_DMA_CURSOR_POS_Y(mdp4_crtc->cursor.y));
spin_unlock_irqrestore(&mdp4_crtc->cursor.lock, flags);
}
/* unlike update_fb(), take a ref to the new scanout fb *before* updating
* plane, then call this. Needed to ensure we don't unref the buffer that
* is actually still being scanned out.
*
* Note that this whole thing goes away with atomic.. since we can defer
* calling into driver until rendering is done.
*/
static void update_scanout(struct drm_crtc *crtc, struct drm_framebuffer *fb)
{
struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
/* flush updates, to make sure hw is updated to new scanout fb,
* so that we can safely queue unref to current fb (ie. next
* vblank we know hw is done w/ previous scanout_fb).
*/
crtc_flush(crtc);
if (mdp4_crtc->scanout_fb)
drm_flip_work_queue(&mdp4_crtc->unref_fb_work,
mdp4_crtc->scanout_fb);
mdp4_crtc->scanout_fb = fb;
/* enable vblank to complete flip: */
request_pending(crtc, PENDING_FLIP);
}
static void update_fb(struct drm_crtc *crtc, bool async,
struct drm_framebuffer *new_fb)
{
struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
struct drm_framebuffer *old_fb = mdp4_crtc->fb;
if (old_fb)
drm_flip_work_queue(&mdp4_crtc->unref_fb_work, old_fb);
/* grab reference to incoming scanout fb: */
drm_framebuffer_reference(new_fb);
mdp4_crtc->base.fb = new_fb;
mdp4_crtc->fb = new_fb;
if (!async) {
/* enable vblank to pick up the old_fb */
mdp_irq_register(&get_kms(crtc)->base, &mdp4_crtc->vblank);
}
}