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drm/armada: switch primary plane to atomic modeset 

Switch the primary plane away from the transitional helpers, and
use the atomic helpers instead to implement the legacy set_plane
ioctl call for this plane.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Russell King 2018-07-30 11:53:06 +01:00
parent 6d2f864fdf
commit 13c94d5349
2 changed files with 3 additions and 117 deletions
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116
drivers/gpu/drm/armada/armada_crtc.c
View File

@ -191,34 +191,6 @@ void armada_drm_plane_work_cancel(struct armada_crtc *dcrtc,
armada_drm_plane_work_call(dcrtc, work, work->cancel);
}
static void armada_drm_crtc_complete_frame_work(struct armada_crtc *dcrtc,
struct armada_plane_work *work)
{
unsigned long flags;
spin_lock_irqsave(&dcrtc->irq_lock, flags);
armada_drm_crtc_update_regs(dcrtc, work->regs);
spin_unlock_irqrestore(&dcrtc->irq_lock, flags);
}
static struct armada_plane_work *
armada_drm_crtc_alloc_plane_work(struct drm_plane *plane)
{
struct armada_plane_work *work;
int i = 0;
work = kzalloc(sizeof(*work), GFP_KERNEL);
if (!work)
return NULL;
work->plane = plane;
work->fn = armada_drm_crtc_complete_frame_work;
work->need_kfree = true;
armada_reg_queue_end(work->regs, i);
return work;
}
static void armada_drm_crtc_queue_state_event(struct drm_crtc *crtc)
{
struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
@ -318,9 +290,6 @@ static void armada_drm_crtc_irq(struct armada_crtc *dcrtc, u32 stat)
spin_unlock(&dcrtc->irq_lock);
if (stat & GRA_FRAME_IRQ)
armada_drm_plane_work_run(dcrtc, dcrtc->crtc.primary);
if (stat & VSYNC_IRQ) {
event = xchg(&dcrtc->event, NULL);
if (event) {
@ -459,15 +428,9 @@ static void armada_drm_crtc_atomic_begin(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
struct armada_plane *dplane;
DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
/* Wait 100ms for any plane works to complete */
dplane = drm_to_armada_plane(crtc->primary);
if (WARN_ON(armada_drm_plane_work_wait(dplane, HZ / 10) == 0))
armada_drm_plane_work_cancel(dcrtc, dplane);
dcrtc->regs_idx = 0;
dcrtc->regs = dcrtc->atomic_regs;
}
@ -511,8 +474,6 @@ static void armada_drm_crtc_atomic_disable(struct drm_crtc *crtc,
if (plane)
WARN_ON(!armada_drm_plane_work_wait(drm_to_armada_plane(plane),
HZ));
armada_drm_plane_work_wait(drm_to_armada_plane(dcrtc->crtc.primary),
MAX_SCHEDULE_TIMEOUT);
drm_crtc_vblank_off(crtc);
armada_drm_crtc_update(dcrtc, false);
@ -802,81 +763,6 @@ static void armada_drm_crtc_destroy(struct drm_crtc *crtc)
kfree(dcrtc);
}
/*
* The mode_config lock is held here, to prevent races between this
* and a mode_set.
*/
static int armada_drm_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *fb, struct drm_pending_vblank_event *event,
uint32_t page_flip_flags, struct drm_modeset_acquire_ctx *ctx)
{
struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
struct drm_plane *plane = crtc->primary;
const struct drm_plane_helper_funcs *plane_funcs;
struct drm_plane_state *state;
struct armada_plane_work *work;
int ret;
/* Construct new state for the primary plane */
state = drm_atomic_helper_plane_duplicate_state(plane);
if (!state)
return -ENOMEM;
drm_atomic_set_fb_for_plane(state, fb);
work = armada_drm_crtc_alloc_plane_work(plane);
if (!work) {
ret = -ENOMEM;
goto put_state;
}
/* Make sure we can get vblank interrupts */
ret = drm_crtc_vblank_get(crtc);
if (ret)
goto put_work;
/*
* If we have another work pending, we can't process this flip.
* The modeset locks protect us from another user queuing a work
* while we're setting up.
*/
if (drm_to_armada_plane(plane)->work) {
ret = -EBUSY;
goto put_vblank;
}
work->event = event;
work->old_fb = plane->state->fb;
/*
* Hold a ref on the new fb while it's being displayed by the
* hardware. The old fb refcount will be released in the worker.
*/
drm_framebuffer_get(state->fb);
/* Point of no return */
swap(plane->state, state);
dcrtc->regs_idx = 0;
dcrtc->regs = work->regs;
plane_funcs = plane->helper_private;
plane_funcs->atomic_update(plane, state);
armada_reg_queue_end(dcrtc->regs, dcrtc->regs_idx);
/* Queue the work - this should never fail */
WARN_ON(armada_drm_plane_work_queue(dcrtc, work));
work = NULL;
put_vblank:
drm_crtc_vblank_put(crtc);
put_work:
kfree(work);
put_state:
drm_atomic_helper_plane_destroy_state(plane, state);
return ret;
}
/* These are called under the vbl_lock. */
static int armada_drm_crtc_enable_vblank(struct drm_crtc *crtc)
{
@ -905,7 +791,7 @@ static const struct drm_crtc_funcs armada_crtc_funcs = {
.cursor_move = armada_drm_crtc_cursor_move,
.destroy = armada_drm_crtc_destroy,
.set_config = drm_atomic_helper_set_config,
.page_flip = armada_drm_crtc_page_flip,
.page_flip = drm_atomic_helper_page_flip,
.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
.enable_vblank = armada_drm_crtc_enable_vblank,

4
drivers/gpu/drm/armada/armada_plane.c
View File

@ -261,8 +261,8 @@ static const struct drm_plane_helper_funcs armada_primary_plane_helper_funcs = {
};
static const struct drm_plane_funcs armada_primary_plane_funcs = {
.update_plane = drm_plane_helper_update,
.disable_plane = drm_plane_helper_disable,
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = drm_primary_helper_destroy,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,