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drm/armada: switch overlay plane to atomic modeset 

Switch the overlay plane away from the transitional helpers and legacy
methods, and use atomic helpers instead to implement the legacy
set_plane ioctl methods.

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 13c94d5349
commit b1ec9ed6aa
3 changed files with 31 additions and 247 deletions
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89
drivers/gpu/drm/armada/armada_crtc.c
View File

@ -117,80 +117,6 @@ static void armada_drm_crtc_update(struct armada_crtc *dcrtc, bool enable)
dcrtc->base + LCD_SPU_DUMB_CTRL);
}
static void armada_drm_plane_work_call(struct armada_crtc *dcrtc,
struct armada_plane_work *work,
void (*fn)(struct armada_crtc *, struct armada_plane_work *))
{
struct armada_plane *dplane = drm_to_armada_plane(work->plane);
struct drm_pending_vblank_event *event;
struct drm_framebuffer *fb;
if (fn)
fn(dcrtc, work);
drm_crtc_vblank_put(&dcrtc->crtc);
event = work->event;
fb = work->old_fb;
if (event || fb) {
struct drm_device *dev = dcrtc->crtc.dev;
unsigned long flags;
spin_lock_irqsave(&dev->event_lock, flags);
if (event)
drm_crtc_send_vblank_event(&dcrtc->crtc, event);
if (fb)
__armada_drm_queue_unref_work(dev, fb);
spin_unlock_irqrestore(&dev->event_lock, flags);
}
if (work->need_kfree)
kfree(work);
wake_up(&dplane->frame_wait);
}
static void armada_drm_plane_work_run(struct armada_crtc *dcrtc,
struct drm_plane *plane)
{
struct armada_plane *dplane = drm_to_armada_plane(plane);
struct armada_plane_work *work = xchg(&dplane->work, NULL);
/* Handle any pending frame work. */
if (work)
armada_drm_plane_work_call(dcrtc, work, work->fn);
}
int armada_drm_plane_work_queue(struct armada_crtc *dcrtc,
struct armada_plane_work *work)
{
struct armada_plane *plane = drm_to_armada_plane(work->plane);
int ret;
ret = drm_crtc_vblank_get(&dcrtc->crtc);
if (ret)
return ret;
ret = cmpxchg(&plane->work, NULL, work) ? -EBUSY : 0;
if (ret)
drm_crtc_vblank_put(&dcrtc->crtc);
return ret;
}
int armada_drm_plane_work_wait(struct armada_plane *plane, long timeout)
{
return wait_event_timeout(plane->frame_wait, !plane->work, timeout);
}
void armada_drm_plane_work_cancel(struct armada_crtc *dcrtc,
struct armada_plane *dplane)
{
struct armada_plane_work *work = xchg(&dplane->work, NULL);
if (work)
armada_drm_plane_work_call(dcrtc, work, work->cancel);
}
static void armada_drm_crtc_queue_state_event(struct drm_crtc *crtc)
{
struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
@ -247,7 +173,6 @@ static void armada_drm_crtc_irq(struct armada_crtc *dcrtc, u32 stat)
{
struct drm_pending_vblank_event *event;
void __iomem *base = dcrtc->base;
struct drm_plane *ovl_plane;
if (stat & DMA_FF_UNDERFLOW)
DRM_ERROR("video underflow on crtc %u\n", dcrtc->num);
@ -257,10 +182,6 @@ static void armada_drm_crtc_irq(struct armada_crtc *dcrtc, u32 stat)
if (stat & VSYNC_IRQ)
drm_crtc_handle_vblank(&dcrtc->crtc);
ovl_plane = dcrtc->plane;
if (ovl_plane)
armada_drm_plane_work_run(dcrtc, ovl_plane);
spin_lock(&dcrtc->irq_lock);
if (stat & GRA_FRAME_IRQ && dcrtc->interlaced) {
int i = stat & GRA_FRAME_IRQ0 ? 0 : 1;
@ -462,19 +383,9 @@ static void armada_drm_crtc_atomic_disable(struct drm_crtc *crtc,
{
struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc);
struct drm_pending_vblank_event *event;
struct drm_plane *plane;
DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
/*
* For transition only - we must wait for completion of our
* untransitioned paths before changing anything.
*/
plane = dcrtc->plane;
if (plane)
WARN_ON(!armada_drm_plane_work_wait(drm_to_armada_plane(plane),
HZ));
drm_crtc_vblank_off(crtc);
armada_drm_crtc_update(dcrtc, false);

19
drivers/gpu/drm/armada/armada_crtc.h
View File

@ -35,29 +35,12 @@ struct armada_crtc;
struct armada_plane;
struct armada_variant;
struct armada_plane_work {
void (*fn)(struct armada_crtc *, struct armada_plane_work *);
void (*cancel)(struct armada_crtc *, struct armada_plane_work *);
bool need_kfree;
struct drm_plane *plane;
struct drm_framebuffer *old_fb;
struct drm_pending_vblank_event *event;
struct armada_regs regs[24];
};
struct armada_plane {
struct drm_plane base;
wait_queue_head_t frame_wait;
struct armada_plane_work *work;
};
#define drm_to_armada_plane(p) container_of(p, struct armada_plane, base)
int armada_drm_plane_work_queue(struct armada_crtc *dcrtc,
struct armada_plane_work *work);
int armada_drm_plane_work_wait(struct armada_plane *plane, long timeout);
void armada_drm_plane_work_cancel(struct armada_crtc *dcrtc,
struct armada_plane *plane);
struct armada_crtc {
struct drm_crtc crtc;
const struct armada_variant *variant;
@ -73,8 +56,6 @@ struct armada_crtc {
bool interlaced;
bool cursor_update;
struct drm_plane *plane;
struct armada_gem_object *cursor_obj;
int cursor_x;
int cursor_y;

170
drivers/gpu/drm/armada/armada_overlay.c
View File

@ -27,9 +27,6 @@
struct armada_ovl_plane {
struct armada_plane base;
struct armada_plane_work works[2];
bool next_work;
bool wait_vblank;
};
#define drm_to_armada_ovl_plane(p) \
container_of(p, struct armada_ovl_plane, base.base)
@ -74,18 +71,6 @@ static inline u32 armada_csc(struct drm_plane_state *state)
}
/* === Plane support === */
static void armada_ovl_plane_work(struct armada_crtc *dcrtc,
struct armada_plane_work *work)
{
unsigned long flags;
trace_armada_ovl_plane_work(&dcrtc->crtc, work->plane);
spin_lock_irqsave(&dcrtc->irq_lock, flags);
armada_drm_crtc_update_regs(dcrtc, work->regs);
spin_unlock_irqrestore(&dcrtc->irq_lock, flags);
}
static void armada_drm_overlay_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
@ -109,8 +94,6 @@ static void armada_drm_overlay_plane_atomic_update(struct drm_plane *plane,
dcrtc = drm_to_armada_crtc(state->crtc);
regs = dcrtc->regs + dcrtc->regs_idx;
drm_to_armada_ovl_plane(plane)->wait_vblank = false;
idx = 0;
if (!old_state->visible && state->visible)
armada_reg_queue_mod(regs, idx,
@ -173,8 +156,6 @@ static void armada_drm_overlay_plane_atomic_update(struct drm_plane *plane,
CFG_SWAPYU | CFG_YUV2RGB) |
CFG_DMA_FTOGGLE | CFG_DMA_TSTMODE |
CFG_DMA_ENA;
drm_to_armada_ovl_plane(plane)->wait_vblank = true;
} else if (old_state->visible != state->visible) {
cfg = state->visible ? CFG_DMA_ENA : 0;
cfg_mask = CFG_DMA_ENA;
@ -262,9 +243,6 @@ static void armada_drm_overlay_plane_atomic_disable(struct drm_plane *plane,
LCD_SPU_SRAM_PARA1);
dcrtc->regs_idx += idx;
if (dcrtc->plane == plane)
dcrtc->plane = NULL;
}
static const struct drm_plane_helper_funcs armada_overlay_plane_helper_funcs = {
@ -275,108 +253,50 @@ static const struct drm_plane_helper_funcs armada_overlay_plane_helper_funcs = {
.atomic_disable = armada_drm_overlay_plane_atomic_disable,
};
static int armada_overlay_commit(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct armada_ovl_plane *dplane = drm_to_armada_ovl_plane(plane);
const struct drm_plane_helper_funcs *plane_funcs;
struct armada_crtc *dcrtc = drm_to_armada_crtc(state->crtc);
struct armada_plane_work *work;
int ret;
plane_funcs = plane->helper_private;
ret = plane_funcs->atomic_check(plane, state);
if (ret)
goto put_state;
work = &dplane->works[dplane->next_work];
if (plane->state->fb != state->fb) {
/*
* Take a reference on the new framebuffer - we want to
* hold on to it while the hardware is displaying it.
*/
drm_framebuffer_reference(state->fb);
work->old_fb = plane->state->fb;
} else {
work->old_fb = NULL;
}
/* Point of no return */
swap(plane->state, state);
/* No CRTC, can't update */
if (!plane->state->crtc)
goto put_state;
dcrtc->regs_idx = 0;
dcrtc->regs = work->regs;
plane_funcs->atomic_update(plane, state);
/* If nothing was updated, short-circuit */
if (dcrtc->regs_idx == 0)
goto put_state;
armada_reg_queue_end(dcrtc->regs, dcrtc->regs_idx);
/* Wait for pending work to complete */
if (armada_drm_plane_work_wait(&dplane->base, HZ / 25) == 0)
armada_drm_plane_work_cancel(dcrtc, &dplane->base);
/* Just updating the position/size? */
if (!dplane->wait_vblank) {
armada_ovl_plane_work(dcrtc, work);
goto put_state;
}
dcrtc->plane = plane;
/* Queue it for update on the next interrupt if we are enabled */
ret = armada_drm_plane_work_queue(dcrtc, work);
if (ret) {
DRM_ERROR("failed to queue plane work: %d\n", ret);
ret = 0;
}
dplane->next_work = !dplane->next_work;
put_state:
plane->funcs->atomic_destroy_state(plane, state);
return ret;
}
static int
armada_ovl_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
armada_overlay_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
struct drm_framebuffer *fb,
int crtc_x, int crtc_y, unsigned crtc_w, unsigned crtc_h,
uint32_t src_x, uint32_t src_y, uint32_t src_w, uint32_t src_h,
struct drm_modeset_acquire_ctx *ctx)
{
struct drm_plane_state *state;
struct drm_atomic_state *state;
struct drm_plane_state *plane_state;
int ret = 0;
trace_armada_ovl_plane_update(plane, crtc, fb,
crtc_x, crtc_y, crtc_w, crtc_h,
src_x, src_y, src_w, src_h);
/* Construct new state for the overlay plane */
state = plane->funcs->atomic_duplicate_state(plane);
state = drm_atomic_state_alloc(plane->dev);
if (!state)
return -ENOMEM;
state->crtc = crtc;
drm_atomic_set_fb_for_plane(state, fb);
state->crtc_x = crtc_x;
state->crtc_y = crtc_y;
state->crtc_h = crtc_h;
state->crtc_w = crtc_w;
state->src_x = src_x;
state->src_y = src_y;
state->src_h = src_h;
state->src_w = src_w;
state->acquire_ctx = ctx;
plane_state = drm_atomic_get_plane_state(state, plane);
if (IS_ERR(plane_state)) {
ret = PTR_ERR(plane_state);
goto fail;
}
return armada_overlay_commit(plane, state);
ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
if (ret != 0)
goto fail;
drm_atomic_set_fb_for_plane(plane_state, fb);
plane_state->crtc_x = crtc_x;
plane_state->crtc_y = crtc_y;
plane_state->crtc_h = crtc_h;
plane_state->crtc_w = crtc_w;
plane_state->src_x = src_x;
plane_state->src_y = src_y;
plane_state->src_h = src_h;
plane_state->src_w = src_w;
ret = drm_atomic_nonblocking_commit(state);
fail:
drm_atomic_state_put(state);
return ret;
}
static void armada_ovl_plane_destroy(struct drm_plane *plane)
@ -388,25 +308,6 @@ static void armada_ovl_plane_destroy(struct drm_plane *plane)
kfree(dplane);
}
static int armada_ovl_plane_set_property(struct drm_plane *plane,
struct drm_property *property, uint64_t val)
{
struct drm_plane_state *state;
int ret;
state = plane->funcs->atomic_duplicate_state(plane);
if (!state)
return -ENOMEM;
ret = plane->funcs->atomic_set_property(plane, state, property, val);
if (ret) {
plane->funcs->atomic_destroy_state(plane, state);
return ret;
}
return armada_overlay_commit(plane, state);
}
static void armada_overlay_reset(struct drm_plane *plane)
{
struct armada_overlay_state *state;
@ -510,9 +411,6 @@ static int armada_overlay_set_property(struct drm_plane *plane,
drm_to_overlay_state(state)->contrast = val;
} else if (property == priv->saturation_prop) {
drm_to_overlay_state(state)->saturation = val;
} else if (property == plane->color_encoding_property) {
/* transitional only */
state->color_encoding = val;
} else {
return -EINVAL;
}
@ -572,10 +470,9 @@ static int armada_overlay_get_property(struct drm_plane *plane,
}
static const struct drm_plane_funcs armada_ovl_plane_funcs = {
.update_plane = armada_ovl_plane_update,
.disable_plane = drm_plane_helper_disable,
.update_plane = armada_overlay_plane_update,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = armada_ovl_plane_destroy,
.set_property = armada_ovl_plane_set_property,
.reset = armada_overlay_reset,
.atomic_duplicate_state = armada_overlay_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
@ -670,11 +567,6 @@ int armada_overlay_plane_create(struct drm_device *dev, unsigned long crtcs)
return ret;
}
dplane->works[0].plane = &dplane->base.base;
dplane->works[0].fn = armada_ovl_plane_work;
dplane->works[1].plane = &dplane->base.base;
dplane->works[1].fn = armada_ovl_plane_work;
drm_plane_helper_add(&dplane->base.base,
&armada_overlay_plane_helper_funcs);