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Subject[PATCHv2 04/10] drm: omapdrm: crtc: save framedone callback from dss
Date
Save the framedone callback supplied by dss for later
usage.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
---
drivers/gpu/drm/omapdrm/omap_crtc.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)

diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c
index b68c70eb395f..76a411fe957a 100644
--- a/drivers/gpu/drm/omapdrm/omap_crtc.c
+++ b/drivers/gpu/drm/omapdrm/omap_crtc.c
@@ -42,6 +42,9 @@ struct omap_crtc {
bool pending;
wait_queue_head_t pending_wait;
struct drm_pending_vblank_event *event;
+
+ void (*framedone_handler)(void *);
+ void *framedone_handler_data;
};

/* -----------------------------------------------------------------------------
@@ -241,6 +244,17 @@ static int omap_crtc_dss_register_framedone(
enum omap_channel channel,
void (*handler)(void *), void *data)
{
+ struct omap_crtc *omap_crtc = omap_crtcs[channel];
+ struct drm_device *dev = omap_crtc->base.dev;
+
+ if (omap_crtc->framedone_handler)
+ return -EBUSY;
+
+ dev_dbg(dev->dev, "register framedone %s", omap_crtc->name);
+
+ omap_crtc->framedone_handler = handler;
+ omap_crtc->framedone_handler_data = data;
+
return 0;
}

@@ -248,6 +262,16 @@ static void omap_crtc_dss_unregister_framedone(
enum omap_channel channel,
void (*handler)(void *), void *data)
{
+ struct omap_crtc *omap_crtc = omap_crtcs[channel];
+ struct drm_device *dev = omap_crtc->base.dev;
+
+ dev_dbg(dev->dev, "unregister framedone %s", omap_crtc->name);
+
+ WARN_ON(omap_crtc->framedone_handler != handler);
+ WARN_ON(omap_crtc->framedone_handler_data != data);
+
+ omap_crtc->framedone_handler = NULL;
+ omap_crtc->framedone_handler_data = NULL;
}

static const struct dss_mgr_ops mgr_ops = {
--
2.11.0
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