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drm/imx: ipuv3-plane: add function to query atomic update status

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This function allows upper layer to check if a requested atomic update
to the plane has been applied or is still pending.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
[p.zabel@pengutronix.de: inverted logic: done -> pending]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Lucas Stach 2018-09-11 15:55:07 +02:00 committed by Philipp Zabel
parent 4bfbd561fc
commit 70e8a0c71e
2 changed files with 22 additions and 0 deletions
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20
drivers/gpu/drm/imx/ipuv3-plane.c
View File

@ -582,6 +582,7 @@ static void ipu_plane_atomic_update(struct drm_plane *plane,
active = ipu_idmac_get_current_buffer(ipu_plane->ipu_ch);
ipu_cpmem_set_buffer(ipu_plane->ipu_ch, !active, eba);
ipu_idmac_select_buffer(ipu_plane->ipu_ch, !active);
ipu_plane->next_buf = !active;
if (ipu_plane_separate_alpha(ipu_plane)) {
active = ipu_idmac_get_current_buffer(ipu_plane->alpha_ch);
ipu_cpmem_set_buffer(ipu_plane->alpha_ch, !active,
@ -709,6 +710,7 @@ static void ipu_plane_atomic_update(struct drm_plane *plane,
ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 1, eba);
ipu_idmac_lock_enable(ipu_plane->ipu_ch, num_bursts);
ipu_plane_enable(ipu_plane);
ipu_plane->next_buf = -1;
}
static const struct drm_plane_helper_funcs ipu_plane_helper_funcs = {
@ -718,6 +720,24 @@ static const struct drm_plane_helper_funcs ipu_plane_helper_funcs = {
.atomic_update = ipu_plane_atomic_update,
};
bool ipu_plane_atomic_update_pending(struct drm_plane *plane)
{
struct ipu_plane *ipu_plane = to_ipu_plane(plane);
struct drm_plane_state *state = plane->state;
struct ipu_plane_state *ipu_state = to_ipu_plane_state(state);
/* disabled crtcs must not block the update */
if (!state->crtc)
return false;
if (ipu_state->use_pre)
return ipu_prg_channel_configure_pending(ipu_plane->ipu_ch);
else if (ipu_plane->next_buf >= 0)
return ipu_idmac_get_current_buffer(ipu_plane->ipu_ch) !=
ipu_plane->next_buf;
return false;
}
int ipu_planes_assign_pre(struct drm_device *dev,
struct drm_atomic_state *state)
{

2
drivers/gpu/drm/imx/ipuv3-plane.h
View File

@ -27,6 +27,7 @@ struct ipu_plane {
int dp_flow;
bool disabling;
int next_buf;
};
struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu,
@ -48,5 +49,6 @@ int ipu_plane_irq(struct ipu_plane *plane);
void ipu_plane_disable(struct ipu_plane *ipu_plane, bool disable_dp_channel);
void ipu_plane_disable_deferred(struct drm_plane *plane);
bool ipu_plane_atomic_update_pending(struct drm_plane *plane);
#endif