[PATCH v10 03/17] drm/exynos: atomic phase 1: use drm_plane_helper_update()

Gustavo Padovan
2015-06-01T15:04:41Z

From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

Rip out the check from exynos_update_plane() and create
exynos_check_plane() for the check phase enabling use to use
the atomic helpers to call our check and update phases when updating
planes.

Update all users of exynos_update_plane() accordingly to call
exynos_check_plane() before.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Tested-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>y
---
drivers/gpu/drm/exynos/exynos_drm_crtc.c | 31 ++++++++++++------------
drivers/gpu/drm/exynos/exynos_drm_plane.c | 40 +++++++++++++++++++++++--------
drivers/gpu/drm/exynos/exynos_drm_plane.h | 2 +-
3 files changed, 47 insertions(+), 26 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index 363b019..ba44c9b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -116,6 +116,7 @@ static int exynos_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *fb = crtc->primary->fb;
unsigned int crtc_w;
unsigned int crtc_h;
+ int ret;

/* when framebuffer changing is requested, crtc's dpms should be on */
if (exynos_crtc->dpms > DRM_MODE_DPMS_ON) {
@@ -123,12 +124,17 @@ static int exynos_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
return -EPERM;
}

+ ret = exynos_check_plane(crtc->primary, fb);
+ if (ret)
+ return ret;
+
crtc_w = fb->width - x;
crtc_h = fb->height - y;
+ exynos_update_plane(crtc->primary, crtc, fb, 0, 0,
+ crtc_w, crtc_h, x << 16, y << 16,
+ crtc_w << 16, crtc_h << 16);

- return exynos_update_plane(crtc->primary, crtc, fb, 0, 0,
- crtc_w, crtc_h, x << 16, y << 16,
- crtc_w << 16, crtc_h << 16);
+ return 0;
}

static void exynos_drm_crtc_disable(struct drm_crtc *crtc)
@@ -165,7 +171,6 @@ static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
{
struct drm_device *dev = crtc->dev;
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
- struct drm_framebuffer *old_fb = crtc->primary->fb;
unsigned int crtc_w, crtc_h;
int ret;

@@ -184,6 +189,10 @@ static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
goto out;
}

+ ret = exynos_check_plane(crtc->primary, fb);
+ if (ret)
+ goto out;
+
ret = drm_vblank_get(dev, exynos_crtc->pipe);
if (ret) {
DRM_DEBUG("failed to acquire vblank counter\n");
@@ -202,17 +211,9 @@ static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
crtc->primary->fb = fb;
crtc_w = fb->width - crtc->x;
crtc_h = fb->height - crtc->y;
- ret = exynos_update_plane(crtc->primary, crtc, fb, 0, 0,
- crtc_w, crtc_h, crtc->x << 16, crtc->y << 16,
- crtc_w << 16, crtc_h << 16);
- if (ret) {
- crtc->primary->fb = old_fb;
- spin_lock_irq(&dev->event_lock);
- exynos_crtc->event = NULL;
- drm_vblank_put(dev, exynos_crtc->pipe);
- spin_unlock_irq(&dev->event_lock);
- return ret;
- }
+ exynos_update_plane(crtc->primary, crtc, fb, 0, 0,
+ crtc_w, crtc_h, crtc->x << 16, crtc->y << 16,
+ crtc_w << 16, crtc_h << 16);

return 0;

diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c
index 01d2918..6b10373 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_plane.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c
@@ -145,21 +145,15 @@ void exynos_plane_mode_set(struct drm_plane *plane, struct drm_crtc *crtc,
plane->crtc = crtc;
}

-int
+void
exynos_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
struct drm_framebuffer *fb, int crtc_x, int crtc_y,
unsigned int crtc_w, unsigned int crtc_h,
uint32_t src_x, uint32_t src_y,
uint32_t src_w, uint32_t src_h)
{
-
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
- int ret;
-
- ret = exynos_check_plane(plane, fb);
- if (ret < 0)
- return ret;

exynos_plane_mode_set(plane, crtc, fb, crtc_x, crtc_y,
crtc_w, crtc_h, src_x >> 16, src_y >> 16,
@@ -167,8 +161,6 @@ exynos_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,

if (exynos_crtc->ops->win_commit)
exynos_crtc->ops->win_commit(exynos_crtc, exynos_plane->zpos);
-
- return 0;
}

static int exynos_disable_plane(struct drm_plane *plane)
@@ -184,11 +176,37 @@ static int exynos_disable_plane(struct drm_plane *plane)
}

static struct drm_plane_funcs exynos_plane_funcs = {
- .update_plane = exynos_update_plane,
+ .update_plane = drm_plane_helper_update,
.disable_plane = exynos_disable_plane,
.destroy = drm_plane_cleanup,
};

+static int exynos_plane_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ return exynos_check_plane(plane, state->fb);
+}
+
+static void exynos_plane_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct drm_plane_state *state = plane->state;
+
+ if (!state->crtc)
+ return;
+
+ exynos_update_plane(plane, state->crtc, state->fb,
+ state->crtc_x, state->crtc_y,
+ state->crtc_w, state->crtc_h,
+ state->src_x, state->src_y,
+ state->src_w, state->src_h);
+}
+
+static const struct drm_plane_helper_funcs plane_helper_funcs = {
+ .atomic_check = exynos_plane_atomic_check,
+ .atomic_update = exynos_plane_atomic_update,
+};
+
static void exynos_plane_attach_zpos_property(struct drm_plane *plane,
unsigned int zpos)
{
@@ -224,6 +242,8 @@ int exynos_plane_init(struct drm_device *dev,
return err;
}

+ drm_plane_helper_add(&exynos_plane->base, &plane_helper_funcs);
+
exynos_plane->zpos = zpos;

if (type == DRM_PLANE_TYPE_OVERLAY)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.h b/drivers/gpu/drm/exynos/exynos_drm_plane.h
index f360590..560ca71 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_plane.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_plane.h
@@ -15,7 +15,7 @@ void exynos_plane_mode_set(struct drm_plane *plane, struct drm_crtc *crtc,
unsigned int crtc_w, unsigned int crtc_h,
uint32_t src_x, uint32_t src_y,
uint32_t src_w, uint32_t src_h);
-int exynos_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
+void exynos_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
struct drm_framebuffer *fb, int crtc_x, int crtc_y,
unsigned int crtc_w, unsigned int crtc_h,
uint32_t src_x, uint32_t src_y,
--
2.1.0

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