Somewhat rough, not sure if some of the code should be moved to
different places, etc..
Only compile tested atm..
Signed-off-by: Rob Clark <robdclark at gmail.com>
---
drivers/gpu/drm/drm_atomic_helper.c | 129 +++++++++++++++++++++---------------
drivers/gpu/drm/drm_fb_helper.c | 74 +++++++++++++++++++++
include/drm/drm_atomic_helper.h | 6 ++
3 files changed, 156 insertions(+), 53 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c
b/drivers/gpu/drm/drm_atomic_helper.c
index 52dbeed..a06068a 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -1494,21 +1494,9 @@ retry:
goto fail;
}
- ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
+ ret = drm_atomic_helper_disable_plane_impl(plane, plane_state);
if (ret != 0)
goto fail;
- drm_atomic_set_fb_for_plane(plane_state, NULL);
- plane_state->crtc_x = 0;
- plane_state->crtc_y = 0;
- plane_state->crtc_h = 0;
- plane_state->crtc_w = 0;
- plane_state->src_x = 0;
- plane_state->src_y = 0;
- plane_state->src_h = 0;
- plane_state->src_w = 0;
-
- if (plane == plane->crtc->cursor)
- state->legacy_cursor_update = true;
ret = drm_atomic_commit(state);
if (ret != 0)
@@ -1538,6 +1526,32 @@ backoff:
}
EXPORT_SYMBOL(drm_atomic_helper_disable_plane);
+/* just used from fb-helper and atomic-helper: */
+int drm_atomic_helper_disable_plane_impl(struct drm_plane *plane,
+ struct drm_plane_state *plane_state)
+{
+ int ret;
+
+ ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
+ if (ret != 0)
+ return ret;
+
+ drm_atomic_set_fb_for_plane(plane_state, NULL);
+ plane_state->crtc_x = 0;
+ plane_state->crtc_y = 0;
+ plane_state->crtc_h = 0;
+ plane_state->crtc_w = 0;
+ plane_state->src_x = 0;
+ plane_state->src_y = 0;
+ plane_state->src_h = 0;
+ plane_state->src_w = 0;
+
+ if (plane == plane->crtc->cursor)
+ plane_state->state->legacy_cursor_update = true;
+
+ return 0;
+}
+
static int update_output_state(struct drm_atomic_state *state,
struct drm_mode_set *set)
{
@@ -1621,8 +1635,6 @@ int drm_atomic_helper_set_config(struct drm_mode_set *set)
{
struct drm_atomic_state *state;
struct drm_crtc *crtc = set->crtc;
- struct drm_crtc_state *crtc_state;
- struct drm_plane_state *primary_state;
int ret = 0;
state = drm_atomic_state_alloc(crtc->dev);
@@ -1631,17 +1643,52 @@ int drm_atomic_helper_set_config(struct drm_mode_set
*set)
state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
retry:
- crtc_state = drm_atomic_get_crtc_state(state, crtc);
- if (IS_ERR(crtc_state)) {
- ret = PTR_ERR(crtc_state);
+ ret = drm_atomic_helper_set_config_impl(set, state);
+
+ ret = drm_atomic_commit(state);
+ if (ret != 0)
goto fail;
- }
+
+ /* Driver takes ownership of state on successful commit. */
+ return 0;
+fail:
+ if (ret == -EDEADLK)
+ goto backoff;
+
+ drm_atomic_state_free(state);
+
+ return ret;
+backoff:
+ drm_atomic_state_clear(state);
+ drm_atomic_legacy_backoff(state);
+
+ /*
+ * Someone might have exchanged the framebuffer while we dropped locks
+ * in the backoff code. We need to fix up the fb refcount tracking the
+ * core does for us.
+ */
+ crtc->primary->old_fb = crtc->primary->fb;
+
+ goto retry;
+}
+EXPORT_SYMBOL(drm_atomic_helper_set_config);
+
+/* just used from fb-helper and atomic-helper: */
+int drm_atomic_helper_set_config_impl(struct drm_mode_set *set,
+ struct drm_atomic_state *state)
+{
+ struct drm_crtc_state *crtc_state;
+ struct drm_plane_state *primary_state;
+ struct drm_crtc *crtc = set->crtc;
+ int ret;
+
+ crtc_state = drm_atomic_get_crtc_state(state, crtc);
+ if (IS_ERR(crtc_state))
+ return PTR_ERR(crtc_state);
primary_state = drm_atomic_get_plane_state(state, crtc->primary);
- if (IS_ERR(primary_state)) {
- ret = PTR_ERR(primary_state);
- goto fail;
- }
+ if (IS_ERR(primary_state))
+ return PTR_ERR(primary_state);
if (!set->mode) {
WARN_ON(set->fb);
@@ -1649,13 +1696,13 @@ retry:
ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL);
if (ret != 0)
- goto fail;
+ return ret;
crtc_state->active = false;
ret = drm_atomic_set_crtc_for_plane(primary_state, NULL);
if (ret != 0)
- goto fail;
+ return ret;
drm_atomic_set_fb_for_plane(primary_state, NULL);
@@ -1667,13 +1714,14 @@ retry:
ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode);
if (ret != 0)
- goto fail;
+ return ret;
crtc_state->active = true;
ret = drm_atomic_set_crtc_for_plane(primary_state, crtc);
if (ret != 0)
- goto fail;
+ return ret;
+
drm_atomic_set_fb_for_plane(primary_state, set->fb);
primary_state->crtc_x = 0;
primary_state->crtc_y = 0;
@@ -1687,35 +1735,10 @@ retry:
commit:
ret = update_output_state(state, set);
if (ret)
- goto fail;
-
- ret = drm_atomic_commit(state);
- if (ret != 0)
- goto fail;
+ return ret;
- /* Driver takes ownership of state on successful commit. */
return 0;
-fail:
- if (ret == -EDEADLK)
- goto backoff;
-
- drm_atomic_state_free(state);
-
- return ret;
-backoff:
- drm_atomic_state_clear(state);
- drm_atomic_legacy_backoff(state);
-
- /*
- * Someone might have exchanged the framebuffer while we dropped locks
- * in the backoff code. We need to fix up the fb refcount tracking the
- * core does for us.
- */
- crtc->primary->old_fb = crtc->primary->fb;
-
- goto retry;
}
-EXPORT_SYMBOL(drm_atomic_helper_set_config);
/**
* drm_atomic_helper_crtc_set_property - helper for crtc properties
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 418d299..3549b1f 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -38,6 +38,8 @@
#include <drm/drm_crtc.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_crtc_helper.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
static LIST_HEAD(kernel_fb_helper_list);
@@ -320,6 +322,75 @@ int drm_fb_helper_debug_leave(struct fb_info *info)
}
EXPORT_SYMBOL(drm_fb_helper_debug_leave);
+static int restore_fbdev_mode_atomic(struct drm_fb_helper *fb_helper)
+{
+ struct drm_device *dev = fb_helper->dev;
+ struct drm_plane *plane;
+ struct drm_atomic_state *state;
+ int i, ret;
+
+ state = drm_atomic_state_alloc(dev);
+ if (!state)
+ return -ENOMEM;
+
+ // XXX this may be fubar in the opps_in_progress case..
+ state->acquire_ctx = dev->mode_config.acquire_ctx;
+retry:
+ drm_for_each_plane(plane, dev) {
+ struct drm_plane_state *plane_state;
+
+ plane_state = drm_atomic_get_plane_state(state, plane);
+ if (IS_ERR(plane_state)) {
+ ret = PTR_ERR(plane_state);
+ goto fail;
+ }
+
+ /* reset rotation: */
+ ret = drm_atomic_plane_set_property(plane, plane_state,
+ dev->mode_config.rotation_property,
+ BIT(DRM_ROTATE_0));
+ if (ret != 0)
+ goto fail;
+
+ /* disable non-primary: */
+ if (plane->type == DRM_PLANE_TYPE_PRIMARY)
+ continue;
+
+ ret = drm_atomic_helper_disable_plane_impl(plane, plane_state);
+ if (ret != 0)
+ goto fail;
+ }
+
+ for(i = 0; i < fb_helper->crtc_count; i++) {
+ struct drm_mode_set *mode_set =
&fb_helper->crtc_info[i].mode_set;
+
+ ret = drm_atomic_helper_set_config_impl(mode_set, state);
+ if (ret != 0)
+ goto fail;
+ }
+
+ ret = drm_atomic_commit(state);
+ if (ret != 0)
+ goto fail;
+
+ return 0;
+
+fail:
+ if (ret == -EDEADLK)
+ goto backoff;
+
+ drm_atomic_state_free(state);
+
+ return ret;
+
+backoff:
+ drm_atomic_state_clear(state);
+ // XXX this may also be a bit fubar in opps_in_progress
+ drm_atomic_legacy_backoff(state);
+
+ goto retry;
+}
+
static bool restore_fbdev_mode(struct drm_fb_helper *fb_helper)
{
struct drm_device *dev = fb_helper->dev;
@@ -329,6 +400,9 @@ static bool restore_fbdev_mode(struct drm_fb_helper
*fb_helper)
drm_warn_on_modeset_not_all_locked(dev);
+ if (drm_core_check_feature(dev, DRIVER_ATOMIC))
+ return restore_fbdev_mode_atomic(fb_helper) == 0;
+
drm_for_each_plane(plane, dev) {
if (plane->type != DRM_PLANE_TYPE_PRIMARY)
drm_plane_force_disable(plane);
diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h
index 11266d14..555f9b9 100644
--- a/include/drm/drm_atomic_helper.h
+++ b/include/drm/drm_atomic_helper.h
@@ -30,6 +30,8 @@
#include <drm/drm_crtc.h>
+struct drm_atomic_state;
+
int drm_atomic_helper_check_modeset(struct drm_device *dev,
struct drm_atomic_state *state);
int drm_atomic_helper_check_planes(struct drm_device *dev,
@@ -72,7 +74,11 @@ int drm_atomic_helper_update_plane(struct drm_plane *plane,
uint32_t src_x, uint32_t src_y,
uint32_t src_w, uint32_t src_h);
int drm_atomic_helper_disable_plane(struct drm_plane *plane);
+int drm_atomic_helper_disable_plane_impl(struct drm_plane *plane,
+ struct drm_plane_state *plane_state);
int drm_atomic_helper_set_config(struct drm_mode_set *set);
+int drm_atomic_helper_set_config_impl(struct drm_mode_set *set,
+ struct drm_atomic_state *state);
int drm_atomic_helper_crtc_set_property(struct drm_crtc *crtc,
struct drm_property *property,
--
2.4.3
