Implement atomic mode setting for the CRTC, using the existing dpms
callback.
Signed-off-by: Geert Uytterhoeven <geert+rene...@glider.be>
---
This works, but I had expected that crtc_helper_funcs.atomic_check
should point to drm_crtc_helper_atomic_check() instead, as the primary
plane cannot be disabled. However in doing so, when
drm_atomic_helper_check_crtc_primary_plane() fails:
[drm:drm_atomic_helper_check_crtc_primary_plane] [CRTC:41:crtc-0] primary
plane missing
the display fails to restore after running "modetest -s", until I run
modetest without -s.
Letting shmob_drm_plane_atomic_check() return -EINVAL if
!new_plane_state->crtc && is_primary would fix that, but causes an ugly
warning:
WARNING: CPU: 0 PID: 21 at drivers/gpu/drm/drm_framebuffer.c:1130
drm_framebuffer_remove+0x374/0x4b0
atomic remove_fb failed with -22
v3:
- No changes,
v2:
- No changes.
---
.../gpu/drm/renesas/shmobile/shmob_drm_crtc.c | 41 +++++++------------
1 file changed, 15 insertions(+), 26 deletions(-)
diff --git a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
index c277f93668825e1c..5c0575eed3ab6833 100644
--- a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
+++ b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
@@ -11,6 +11,7 @@
#include <linux/media-bus-format.h>
#include <linux/pm_runtime.h>
+#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_atomic_state_helper.h>
#include <drm/drm_atomic_uapi.h>
@@ -319,27 +320,6 @@ static void shmob_drm_crtc_dpms(struct drm_crtc *crtc, int
mode)
scrtc->dpms = mode;
}
-static void shmob_drm_crtc_mode_prepare(struct drm_crtc *crtc)
-{
- shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
-}
-
-static void shmob_drm_crtc_mode_commit(struct drm_crtc *crtc)
-{
- shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
-}
-
-static int shmob_drm_crtc_atomic_check(struct drm_crtc *crtc,
- struct drm_atomic_state *state)
-{
- return 0;
-}
-
-static void shmob_drm_crtc_atomic_begin(struct drm_crtc *crtc,
- struct drm_atomic_state *state)
-{
-}
-
static void shmob_drm_crtc_atomic_flush(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
@@ -356,13 +336,22 @@ static void shmob_drm_crtc_atomic_flush(struct drm_crtc
*crtc,
}
}
+static void shmob_drm_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
+}
+
+static void shmob_drm_crtc_atomic_disable(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
+}
+
static const struct drm_crtc_helper_funcs crtc_helper_funcs = {
- .dpms = shmob_drm_crtc_dpms,
- .prepare = shmob_drm_crtc_mode_prepare,
- .commit = shmob_drm_crtc_mode_commit,
- .atomic_check = shmob_drm_crtc_atomic_check,
- .atomic_begin = shmob_drm_crtc_atomic_begin,
.atomic_flush = shmob_drm_crtc_atomic_flush,
+ .atomic_enable = shmob_drm_crtc_atomic_enable,
+ .atomic_disable = shmob_drm_crtc_atomic_disable,
};
static int shmob_drm_crtc_page_flip(struct drm_crtc *crtc,
--
2.34.1
