summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/sti/sti_layer.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/sti/sti_layer.c')
-rw-r--r--drivers/gpu/drm/sti/sti_layer.c197
1 files changed, 197 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sti/sti_layer.c b/drivers/gpu/drm/sti/sti_layer.c
new file mode 100644
index 000000000000..06a587c4f1bb
--- /dev/null
+++ b/drivers/gpu/drm/sti/sti_layer.c
@@ -0,0 +1,197 @@
+/*
+ * 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 <drm/drmP.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+
+#include "sti_compositor.h"
+#include "sti_gdp.h"
+#include "sti_layer.h"
+#include "sti_vid.h"
+
+const char *sti_layer_to_str(struct sti_layer *layer)
+{
+ switch (layer->desc) {
+ case STI_GDP_0:
+ return "GDP0";
+ case STI_GDP_1:
+ return "GDP1";
+ case STI_GDP_2:
+ return "GDP2";
+ case STI_GDP_3:
+ return "GDP3";
+ case STI_VID_0:
+ return "VID0";
+ case STI_VID_1:
+ return "VID1";
+ case STI_CURSOR:
+ return "CURSOR";
+ default:
+ return "<UNKNOWN LAYER>";
+ }
+}
+
+struct sti_layer *sti_layer_create(struct device *dev, int desc,
+ void __iomem *baseaddr)
+{
+
+ struct sti_layer *layer = NULL;
+
+ switch (desc & STI_LAYER_TYPE_MASK) {
+ case STI_GDP:
+ layer = sti_gdp_create(dev, desc);
+ break;
+ case STI_VID:
+ layer = sti_vid_create(dev);
+ break;
+ }
+
+ if (!layer) {
+ DRM_ERROR("Failed to create layer\n");
+ return NULL;
+ }
+
+ layer->desc = desc;
+ layer->dev = dev;
+ layer->regs = baseaddr;
+
+ layer->ops->init(layer);
+
+ DRM_DEBUG_DRIVER("%s created\n", sti_layer_to_str(layer));
+
+ return layer;
+}
+
+int sti_layer_prepare(struct sti_layer *layer, struct drm_framebuffer *fb,
+ struct drm_display_mode *mode, int mixer_id,
+ int dest_x, int dest_y, int dest_w, int dest_h,
+ int src_x, int src_y, int src_w, int src_h)
+{
+ int ret;
+ unsigned int i;
+ struct drm_gem_cma_object *cma_obj;
+
+ if (!layer || !fb || !mode) {
+ DRM_ERROR("Null fb, layer or mode\n");
+ return 1;
+ }
+
+ cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
+ if (!cma_obj) {
+ DRM_ERROR("Can't get CMA GEM object for fb\n");
+ return 1;
+ }
+
+ layer->fb = fb;
+ layer->mode = mode;
+ layer->mixer_id = mixer_id;
+ layer->dst_x = dest_x;
+ layer->dst_y = dest_y;
+ layer->dst_w = clamp_val(dest_w, 0, mode->crtc_hdisplay - dest_x);
+ layer->dst_h = clamp_val(dest_h, 0, mode->crtc_vdisplay - dest_y);
+ layer->src_x = src_x;
+ layer->src_y = src_y;
+ layer->src_w = src_w;
+ layer->src_h = src_h;
+ layer->format = fb->pixel_format;
+ layer->paddr = cma_obj->paddr;
+ for (i = 0; i < 4; i++) {
+ layer->pitches[i] = fb->pitches[i];
+ layer->offsets[i] = fb->offsets[i];
+ }
+
+ DRM_DEBUG_DRIVER("%s is associated with mixer_id %d\n",
+ sti_layer_to_str(layer),
+ layer->mixer_id);
+ DRM_DEBUG_DRIVER("%s dst=(%dx%d)@(%d,%d) - src=(%dx%d)@(%d,%d)\n",
+ sti_layer_to_str(layer),
+ layer->dst_w, layer->dst_h, layer->dst_x, layer->dst_y,
+ layer->src_w, layer->src_h, layer->src_x,
+ layer->src_y);
+
+ DRM_DEBUG_DRIVER("drm FB:%d format:%.4s phys@:0x%lx\n", fb->base.id,
+ (char *)&layer->format, (unsigned long)layer->paddr);
+
+ if (!layer->ops->prepare)
+ goto err_no_prepare;
+
+ ret = layer->ops->prepare(layer, !layer->enabled);
+ if (!ret)
+ layer->enabled = true;
+
+ return ret;
+
+err_no_prepare:
+ DRM_ERROR("Cannot prepare\n");
+ return 1;
+}
+
+int sti_layer_commit(struct sti_layer *layer)
+{
+ if (!layer)
+ return 1;
+
+ if (!layer->ops->commit)
+ goto err_no_commit;
+
+ return layer->ops->commit(layer);
+
+err_no_commit:
+ DRM_ERROR("Cannot commit\n");
+ return 1;
+}
+
+int sti_layer_disable(struct sti_layer *layer)
+{
+ int ret;
+
+ DRM_DEBUG_DRIVER("%s\n", sti_layer_to_str(layer));
+ if (!layer)
+ return 1;
+
+ if (!layer->enabled)
+ return 0;
+
+ if (!layer->ops->disable)
+ goto err_no_disable;
+
+ ret = layer->ops->disable(layer);
+ if (!ret)
+ layer->enabled = false;
+ else
+ DRM_ERROR("Disable failed\n");
+
+ return ret;
+
+err_no_disable:
+ DRM_ERROR("Cannot disable\n");
+ return 1;
+}
+
+const uint32_t *sti_layer_get_formats(struct sti_layer *layer)
+{
+ if (!layer)
+ return NULL;
+
+ if (!layer->ops->get_formats)
+ return NULL;
+
+ return layer->ops->get_formats(layer);
+}
+
+unsigned int sti_layer_get_nb_formats(struct sti_layer *layer)
+{
+ if (!layer)
+ return 0;
+
+ if (!layer->ops->get_nb_formats)
+ return 0;
+
+ return layer->ops->get_nb_formats(layer);
+}