drm: sti: Add DRM driver itself
Make the link between all the hardware drivers and DRM/KMS interface.
Create the driver itself and make it register all the sub-components.
Use GEM CMA helpers for buffer allocation.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Rob Clark <robdclark@gmail.com>
diff --git a/drivers/gpu/drm/sti/sti_drm_plane.c b/drivers/gpu/drm/sti/sti_drm_plane.c
new file mode 100644
index 0000000..f4118d4
--- /dev/null
+++ b/drivers/gpu/drm/sti/sti_drm_plane.c
@@ -0,0 +1,195 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
+ * Fabien Dessenne <fabien.dessenne@st.com>
+ * for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include "sti_compositor.h"
+#include "sti_drm_drv.h"
+#include "sti_drm_plane.h"
+#include "sti_vtg.h"
+
+enum sti_layer_desc sti_layer_default_zorder[] = {
+ STI_GDP_0,
+ STI_VID_0,
+ STI_GDP_1,
+ STI_VID_1,
+ STI_GDP_2,
+ STI_GDP_3,
+};
+
+/* (Background) < GDP0 < VID0 < GDP1 < VID1 < GDP2 < GDP3 < (ForeGround) */
+
+static int
+sti_drm_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 sti_layer *layer = to_sti_layer(plane);
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ int res;
+
+ DRM_DEBUG_KMS("CRTC:%d (%s) drm plane:%d (%s) drm fb:%d\n",
+ crtc->base.id, sti_mixer_to_str(mixer),
+ plane->base.id, sti_layer_to_str(layer), fb->base.id);
+ DRM_DEBUG_KMS("(%dx%d)@(%d,%d)\n", crtc_w, crtc_h, crtc_x, crtc_y);
+
+ res = sti_mixer_set_layer_depth(mixer, layer);
+ if (res) {
+ DRM_ERROR("Can not set layer depth\n");
+ return res;
+ }
+
+ /* src_x are in 16.16 format. */
+ res = sti_layer_prepare(layer, fb, &crtc->mode, mixer->id,
+ crtc_x, crtc_y, crtc_w, crtc_h,
+ src_x >> 16, src_y >> 16,
+ src_w >> 16, src_h >> 16);
+ if (res) {
+ DRM_ERROR("Layer prepare failed\n");
+ return res;
+ }
+
+ res = sti_layer_commit(layer);
+ if (res) {
+ DRM_ERROR("Layer commit failed\n");
+ return res;
+ }
+
+ res = sti_mixer_set_layer_status(mixer, layer, true);
+ if (res) {
+ DRM_ERROR("Can not enable layer at mixer\n");
+ return res;
+ }
+
+ return 0;
+}
+
+static int sti_drm_disable_plane(struct drm_plane *plane)
+{
+ struct sti_layer *layer;
+ struct sti_mixer *mixer;
+ int lay_res, mix_res;
+
+ if (!plane->crtc) {
+ DRM_DEBUG_DRIVER("drm plane:%d not enabled\n", plane->base.id);
+ return 0;
+ }
+ layer = to_sti_layer(plane);
+ mixer = to_sti_mixer(plane->crtc);
+
+ DRM_DEBUG_DRIVER("CRTC:%d (%s) drm plane:%d (%s)\n",
+ plane->crtc->base.id, sti_mixer_to_str(mixer),
+ plane->base.id, sti_layer_to_str(layer));
+
+ /* Disable layer at mixer level */
+ mix_res = sti_mixer_set_layer_status(mixer, layer, false);
+ if (mix_res)
+ DRM_ERROR("Can not disable layer at mixer\n");
+
+ /* Wait a while to be sure that a Vsync event is received */
+ msleep(WAIT_NEXT_VSYNC_MS);
+
+ /* Then disable layer itself */
+ lay_res = sti_layer_disable(layer);
+ if (lay_res)
+ DRM_ERROR("Layer disable failed\n");
+
+ if (lay_res || mix_res)
+ return -EINVAL;
+
+ return 0;
+}
+
+static void sti_drm_plane_destroy(struct drm_plane *plane)
+{
+ DRM_DEBUG_DRIVER("\n");
+
+ sti_drm_disable_plane(plane);
+ drm_plane_cleanup(plane);
+}
+
+static int sti_drm_plane_set_property(struct drm_plane *plane,
+ struct drm_property *property,
+ uint64_t val)
+{
+ struct drm_device *dev = plane->dev;
+ struct sti_drm_private *private = dev->dev_private;
+ struct sti_layer *layer = to_sti_layer(plane);
+
+ DRM_DEBUG_DRIVER("\n");
+
+ if (property == private->plane_zorder_property) {
+ layer->zorder = val;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static struct drm_plane_funcs sti_drm_plane_funcs = {
+ .update_plane = sti_drm_update_plane,
+ .disable_plane = sti_drm_disable_plane,
+ .destroy = sti_drm_plane_destroy,
+ .set_property = sti_drm_plane_set_property,
+};
+
+static void sti_drm_plane_attach_zorder_property(struct drm_plane *plane,
+ uint64_t default_val)
+{
+ struct drm_device *dev = plane->dev;
+ struct sti_drm_private *private = dev->dev_private;
+ struct drm_property *prop;
+ struct sti_layer *layer = to_sti_layer(plane);
+
+ prop = private->plane_zorder_property;
+ if (!prop) {
+ prop = drm_property_create_range(dev, 0, "zpos", 0,
+ GAM_MIXER_NB_DEPTH_LEVEL - 1);
+ if (!prop)
+ return;
+
+ private->plane_zorder_property = prop;
+ }
+
+ drm_object_attach_property(&plane->base, prop, default_val);
+ layer->zorder = default_val;
+}
+
+struct drm_plane *sti_drm_plane_init(struct drm_device *dev,
+ struct sti_layer *layer,
+ unsigned int possible_crtcs,
+ enum drm_plane_type type)
+{
+ int err, i;
+ uint64_t default_zorder = 0;
+
+ err = drm_universal_plane_init(dev, &layer->plane, possible_crtcs,
+ &sti_drm_plane_funcs,
+ sti_layer_get_formats(layer),
+ sti_layer_get_nb_formats(layer), type);
+ if (err) {
+ DRM_ERROR("Failed to initialize plane\n");
+ return NULL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(sti_layer_default_zorder); i++)
+ if (sti_layer_default_zorder[i] == layer->desc)
+ break;
+
+ default_zorder = i;
+
+ if (type == DRM_PLANE_TYPE_OVERLAY)
+ sti_drm_plane_attach_zorder_property(&layer->plane,
+ default_zorder);
+
+ DRM_DEBUG_DRIVER("drm plane:%d mapped to %s with zorder:%llu\n",
+ layer->plane.base.id,
+ sti_layer_to_str(layer), default_zorder);
+
+ return &layer->plane;
+}
