Hi, Gerd!
On 12/19/18 1:51 PM, Gerd Hoffmann wrote:
Conversion to atomic modesetting, step one.
Add atomic crtc helper callbacks.
Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
---
drivers/gpu/drm/bochs/bochs_kms.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/gpu/drm/bochs/bochs_kms.c b/drivers/gpu/drm/bochs/bochs_kms.c
index f7e6d1a9b3..59d469f343 100644
--- a/drivers/gpu/drm/bochs/bochs_kms.c
+++ b/drivers/gpu/drm/bochs/bochs_kms.c
@@ -115,6 +115,29 @@ static int bochs_crtc_page_flip(struct drm_crtc *crtc,
return 0;
}
+static void bochs_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_crtc_state)
+{
+}
+
+static void bochs_crtc_atomic_flush(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_crtc_state)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_pending_vblank_event *event;
+ unsigned long irqflags;
You could probably move these under the actual if where these are needed,
but it's up to you
+
+ if (crtc->state && crtc->state->event) {
+ event = crtc->state->event;
+ crtc->state->event = NULL;
Not quite sure if touching the event above is allowed w/o holding the
event lock
+
+ spin_lock_irqsave(&dev->event_lock, irqflags);
+ drm_crtc_send_vblank_event(crtc, event);
+ spin_unlock_irqrestore(&dev->event_lock, irqflags);
+ }
+}
+
+
/* These provide the minimum set of functions required to handle a CRTC */
static const struct drm_crtc_funcs bochs_crtc_funcs = {
.set_config = drm_crtc_helper_set_config,
@@ -128,6 +151,8 @@ static const struct drm_crtc_helper_funcs bochs_helper_funcs = {
.mode_set_base = bochs_crtc_mode_set_base,
.prepare = bochs_crtc_prepare,
.commit = bochs_crtc_commit,
+ .atomic_enable = bochs_crtc_atomic_enable,
+ .atomic_flush = bochs_crtc_atomic_flush,
};
static const uint32_t bochs_formats[] = {
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