[PATCH v3.5 06/19] drm/i915: Split skl_update_scaler, v4.

Maarten Lankhorst
2015-06-22T07:50:35Z

commit 2c310b9d2859863826c3688c88218d607d5dd19a
Author: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Date: Mon May 18 12:28:52 2015 +0200

drm/i915: Split skl_update_scaler, v4.

It's easier to read separate functions for crtc and plane scaler state.

Changes since v1:
- Update documentation.
Changes since v2:
- Get rid of parameters to skl_update_scaler only used for traces.
This avoids needing to document the other parameters.
Changes since v3:
- Rename scaler_idx to scaler_user.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Tested-by(IVB): Matt Roper <matthew.d.roper@intel.com>

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 36f2924b9a68..7e008a1b105b 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4313,62 +4313,16 @@ static void cpt_verify_modeset(struct drm_device *dev, int pipe)
}
}

-/**
- * skl_update_scaler_users - Stages update to crtc's scaler state
- * @intel_crtc: crtc
- * @crtc_state: crtc_state
- * @plane: plane (NULL indicates crtc is requesting update)
- * @plane_state: plane's state
- * @force_detach: request unconditional detachment of scaler
- *
- * This function updates scaler state for requested plane or crtc.
- * To request scaler usage update for a plane, caller shall pass plane pointer.
- * To request scaler usage update for crtc, caller shall pass plane pointer
- * as NULL.
- *
- * Return
- * 0 - scaler_usage updated successfully
- * error - requested scaling cannot be supported or other error condition
- */
-int
-skl_update_scaler_users(
- struct intel_crtc *intel_crtc, struct intel_crtc_state *crtc_state,
- struct intel_plane *intel_plane, struct intel_plane_state *plane_state,
- int force_detach)
+static int
+skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
+ unsigned scaler_user, int *scaler_id, unsigned int rotation,
+ int src_w, int src_h, int dst_w, int dst_h)
{
+ struct intel_crtc_scaler_state *scaler_state =
+ &crtc_state->scaler_state;
+ struct intel_crtc *intel_crtc =
+ to_intel_crtc(crtc_state->base.crtc);
int need_scaling;
- int idx;
- int src_w, src_h, dst_w, dst_h;
- int *scaler_id;
- struct drm_framebuffer *fb;
- struct intel_crtc_scaler_state *scaler_state;
- unsigned int rotation;
-
- if (!intel_crtc || !crtc_state)
- return 0;
-
- scaler_state = &crtc_state->scaler_state;
-
- idx = intel_plane ? drm_plane_index(&intel_plane->base) : SKL_CRTC_INDEX;
- fb = intel_plane ? plane_state->base.fb : NULL;
-
- if (intel_plane) {
- src_w = drm_rect_width(&plane_state->src) >> 16;
- src_h = drm_rect_height(&plane_state->src) >> 16;
- dst_w = drm_rect_width(&plane_state->dst);
- dst_h = drm_rect_height(&plane_state->dst);
- scaler_id = &plane_state->scaler_id;
- rotation = plane_state->base.rotation;
- } else {
- struct drm_display_mode *adjusted_mode =
- &crtc_state->base.adjusted_mode;
- src_w = crtc_state->pipe_src_w;
- src_h = crtc_state->pipe_src_h;
- dst_w = adjusted_mode->hdisplay;
- dst_h = adjusted_mode->vdisplay;
- scaler_id = &scaler_state->scaler_id;
- rotation = DRM_ROTATE_0;
- }

need_scaling = intel_rotation_90_or_270(rotation) ?
(src_h != dst_w || src_w != dst_h):
@@ -4384,17 +4338,14 @@ skl_update_scaler_users(
* update to free the scaler is done in plane/panel-fit programming.
* For this purpose crtc/plane_state->scaler_id isn't reset here.
*/
- if (force_detach || !need_scaling || (intel_plane &&
- (!fb || !plane_state->visible))) {
+ if (force_detach || !need_scaling) {
if (*scaler_id >= 0) {
- scaler_state->scaler_users &= ~(1 << idx);
+ scaler_state->scaler_users &= ~(1 << scaler_user);
scaler_state->scalers[*scaler_id].in_use = 0;

- DRM_DEBUG_KMS("Staged freeing scaler id %d.%d from %s:%d "
- "crtc_state = %p scaler_users = 0x%x\n",
- intel_crtc->pipe, *scaler_id, intel_plane ? "PLANE" : "CRTC",
- intel_plane ? intel_plane->base.base.id :
- intel_crtc->base.base.id, crtc_state,
+ DRM_DEBUG_KMS("scaler_user index %u.%u: "
+ "Staged freeing scaler id %d scaler_users = 0x%x\n",
+ intel_crtc->pipe, scaler_user, *scaler_id,
scaler_state->scaler_users);
*scaler_id = -1;
}
@@ -4407,51 +4358,112 @@ skl_update_scaler_users(

src_w > SKL_MAX_SRC_W || src_h > SKL_MAX_SRC_H ||
dst_w > SKL_MAX_DST_W || dst_h > SKL_MAX_DST_H) {
- DRM_DEBUG_KMS("%s:%d scaler_user index %u.%u: src %ux%u dst %ux%u "
+ DRM_DEBUG_KMS("scaler_user index %u.%u: src %ux%u dst %ux%u "
"size is out of scaler range\n",
- intel_plane ? "PLANE" : "CRTC",
- intel_plane ? intel_plane->base.base.id : intel_crtc->base.base.id,
- intel_crtc->pipe, idx, src_w, src_h, dst_w, dst_h);
+ intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h);
return -EINVAL;
}

+ /* mark this plane as a scaler user in crtc_state */
+ scaler_state->scaler_users |= (1 << scaler_user);
+ DRM_DEBUG_KMS("scaler_user index %u.%u: "
+ "staged scaling request for %ux%u->%ux%u scaler_users = 0x%x\n",
+ intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h,
+ scaler_state->scaler_users);
+
+ return 0;
+}
+
+/**
+ * skl_update_scaler_crtc - Stages update to scaler state for a given crtc.
+ *
+ * @state: crtc's scaler state
+ * @force_detach: whether to forcibly disable scaler
+ *
+ * Return
+ * 0 - scaler_usage updated successfully
+ * error - requested scaling cannot be supported or other error condition
+ */
+int skl_update_scaler_crtc(struct intel_crtc_state *state, int force_detach)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(state->base.crtc);
+ struct drm_display_mode *adjusted_mode =
+ &state->base.adjusted_mode;
+
+ DRM_DEBUG_KMS("Updating scaler for [CRTC:%i] scaler_user index %u.%u\n",
+ intel_crtc->base.base.id, intel_crtc->pipe, SKL_CRTC_INDEX);
+
+ return skl_update_scaler(state, force_detach, SKL_CRTC_INDEX,
+ &state->scaler_state.scaler_id, DRM_ROTATE_0,
+ state->pipe_src_w, state->pipe_src_h,
+ adjusted_mode->hdisplay, adjusted_mode->hdisplay);
+}
+
+/**
+ * skl_update_scaler_plane - Stages update to scaler state for a given plane.
+ *
+ * @state: crtc's scaler state
+ * @intel_plane: affected plane
+ * @plane_state: atomic plane state to update
+ *
+ * Return
+ * 0 - scaler_usage updated successfully
+ * error - requested scaling cannot be supported or other error condition
+ */
+int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
+ struct intel_plane *intel_plane,
+ struct intel_plane_state *plane_state)
+{
+
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
+ struct drm_framebuffer *fb = plane_state->base.fb;
+ int ret;
+
+ bool force_detach = !fb || !plane_state->visible;
+
+ DRM_DEBUG_KMS("Updating scaler for [PLANE:%d] scaler_user index %u.%u\n",
+ intel_plane->base.base.id, intel_crtc->pipe,
+ drm_plane_index(&intel_plane->base));
+
+ ret = skl_update_scaler(crtc_state, force_detach,
+ drm_plane_index(&intel_plane->base),
+ &plane_state->scaler_id,
+ plane_state->base.rotation,
+ drm_rect_width(&plane_state->src) >> 16,
+ drm_rect_height(&plane_state->src) >> 16,
+ drm_rect_width(&plane_state->dst),
+ drm_rect_height(&plane_state->dst));
+
+ if (ret || plane_state->scaler_id < 0)
+ return ret;
+
/* check colorkey */
- if (WARN_ON(intel_plane &&
- intel_plane->ckey.flags != I915_SET_COLORKEY_NONE)) {
- DRM_DEBUG_KMS("PLANE:%d scaling %ux%u->%ux%u not allowed with colorkey",
- intel_plane->base.base.id, src_w, src_h, dst_w, dst_h);
+ if (WARN_ON(intel_plane->ckey.flags != I915_SET_COLORKEY_NONE)) {
+ DRM_DEBUG_KMS("[PLANE:%d] scaling with color key not allowed",
+ intel_plane->base.base.id);
return -EINVAL;
}

/* Check src format */
- if (intel_plane) {
- switch (fb->pixel_format) {
- case DRM_FORMAT_RGB565:
- case DRM_FORMAT_XBGR8888:
- case DRM_FORMAT_XRGB8888:
- case DRM_FORMAT_ABGR8888:
- case DRM_FORMAT_ARGB8888:
- case DRM_FORMAT_XRGB2101010:
- case DRM_FORMAT_XBGR2101010:
- case DRM_FORMAT_YUYV:
- case DRM_FORMAT_YVYU:
- case DRM_FORMAT_UYVY:
- case DRM_FORMAT_VYUY:
- break;
- default:
- DRM_DEBUG_KMS("PLANE:%d FB:%d unsupported scaling format 0x%x\n",
- intel_plane->base.base.id, fb->base.id, fb->pixel_format);
- return -EINVAL;
- }
+ switch (fb->pixel_format) {
+ case DRM_FORMAT_RGB565:
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_XRGB8888:
+ case DRM_FORMAT_ABGR8888:
+ case DRM_FORMAT_ARGB8888:
+ case DRM_FORMAT_XRGB2101010:
+ case DRM_FORMAT_XBGR2101010:
+ case DRM_FORMAT_YUYV:
+ case DRM_FORMAT_YVYU:
+ case DRM_FORMAT_UYVY:
+ case DRM_FORMAT_VYUY:
+ break;
+ default:
+ DRM_DEBUG_KMS("[PLANE:%d] FB:%d unsupported scaling format 0x%x\n",
+ intel_plane->base.base.id, fb->base.id, fb->pixel_format);
+ return -EINVAL;
}

- /* mark this plane as a scaler user in crtc_state */
- scaler_state->scaler_users |= (1 << idx);
- DRM_DEBUG_KMS("%s:%d staged scaling request for %ux%u->%ux%u "
- "crtc_state = %p scaler_users = 0x%x\n",
- intel_plane ? "PLANE" : "CRTC",
- intel_plane ? intel_plane->base.base.id : intel_crtc->base.base.id,
- src_w, src_h, dst_w, dst_h, crtc_state, scaler_state->scaler_users);
return 0;
}

@@ -4466,7 +4478,7 @@ static void skylake_pfit_update(struct intel_crtc *crtc, int enable)
DRM_DEBUG_KMS("for crtc_state = %p\n", crtc->config);

/* To update pfit, first update scaler state */
- skl_update_scaler_users(crtc, crtc->config, NULL, NULL, !enable);
+ skl_update_scaler_crtc(crtc->config, !enable);
intel_atomic_setup_scalers(crtc->base.dev, crtc, crtc->config);
skl_detach_scalers(crtc);
if (!enable)
@@ -13659,8 +13671,9 @@ intel_check_primary_plane(struct drm_plane *plane,
}

if (INTEL_INFO(dev)->gen >= 9) {
- ret = skl_update_scaler_users(intel_crtc, crtc_state,
- to_intel_plane(plane), state, 0);
+ ret = skl_update_scaler_plane(crtc_state,
+ to_intel_plane(plane),
+ state);
if (ret)
return ret;
}
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index f52eef138247..6141a702ba36 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1377,7 +1377,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,

if (INTEL_INFO(dev)->gen >= 9) {
int ret;
- ret = skl_update_scaler_users(intel_crtc, pipe_config, NULL, NULL, 0);
+ ret = skl_update_scaler_crtc(pipe_config, 0);
if (ret)
return ret;
}
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 02b18a173472..2436af9d2678 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -263,7 +263,7 @@ struct intel_plane_state {
* plane requiring a scaler:
* - During check_plane, its bit is set in
* crtc_state->scaler_state.scaler_users by calling helper function
- * update_scaler_users.
+ * update_scaler_plane.
* - scaler_id indicates the scaler it got assigned.
*
* plane doesn't require a scaler:
@@ -271,7 +271,7 @@ struct intel_plane_state {
* got disabled.
* - During check_plane, corresponding bit is reset in
* crtc_state->scaler_state.scaler_users by calling helper function
- * update_scaler_users.
+ * update_scaler_plane.
*/
int scaler_id;
};
@@ -1148,9 +1148,11 @@ void intel_mode_from_pipe_config(struct drm_display_mode *mode,
void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc);
void intel_modeset_preclose(struct drm_device *dev, struct drm_file *file);
void skl_detach_scalers(struct intel_crtc *intel_crtc);
-int skl_update_scaler_users(struct intel_crtc *intel_crtc,
- struct intel_crtc_state *crtc_state, struct intel_plane *intel_plane,
- struct intel_plane_state *plane_state, int force_detach);
+int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
+ struct intel_plane *intel_plane,
+ struct intel_plane_state *plane_state);
+
+int skl_update_scaler_crtc(struct intel_crtc_state *crtc_state, int force_detach);
int skl_max_scale(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state);

unsigned long intel_plane_obj_offset(struct intel_plane *intel_plane,
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 0434cbe1634b..f57268bde9aa 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -944,8 +944,7 @@ finish:
}

if (INTEL_INFO(dev)->gen >= 9) {
- ret = skl_update_scaler_users(intel_crtc, crtc_state, intel_plane,
- state, 0);
+ ret = skl_update_scaler_plane(crtc_state, intel_plane, state);
if (ret)
return ret;
}