2 * Copyright (C) STMicroelectronics SA 2014
3 * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
4 * Fabien Dessenne <fabien.dessenne@st.com>
5 * for STMicroelectronics.
6 * License terms: GNU General Public License (GPL), version 2
10 #include <drm/drm_gem_cma_helper.h>
11 #include <drm/drm_fb_cma_helper.h>
13 #include "sti_compositor.h"
15 #include "sti_layer.h"
18 const char *sti_layer_to_str(struct sti_layer *layer)
20 switch (layer->desc) {
36 return "<UNKNOWN LAYER>";
40 struct sti_layer *sti_layer_create(struct device *dev, int desc,
41 void __iomem *baseaddr)
44 struct sti_layer *layer = NULL;
46 switch (desc & STI_LAYER_TYPE_MASK) {
48 layer = sti_gdp_create(dev, desc);
51 layer = sti_vid_create(dev);
56 DRM_ERROR("Failed to create layer\n");
62 layer->regs = baseaddr;
64 layer->ops->init(layer);
66 DRM_DEBUG_DRIVER("%s created\n", sti_layer_to_str(layer));
71 int sti_layer_prepare(struct sti_layer *layer, struct drm_framebuffer *fb,
72 struct drm_display_mode *mode, int mixer_id,
73 int dest_x, int dest_y, int dest_w, int dest_h,
74 int src_x, int src_y, int src_w, int src_h)
78 struct drm_gem_cma_object *cma_obj;
80 if (!layer || !fb || !mode) {
81 DRM_ERROR("Null fb, layer or mode\n");
85 cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
87 DRM_ERROR("Can't get CMA GEM object for fb\n");
93 layer->mixer_id = mixer_id;
94 layer->dst_x = dest_x;
95 layer->dst_y = dest_y;
96 layer->dst_w = clamp_val(dest_w, 0, mode->crtc_hdisplay - dest_x);
97 layer->dst_h = clamp_val(dest_h, 0, mode->crtc_vdisplay - dest_y);
100 layer->src_w = src_w;
101 layer->src_h = src_h;
102 layer->format = fb->pixel_format;
103 layer->paddr = cma_obj->paddr;
104 for (i = 0; i < 4; i++) {
105 layer->pitches[i] = fb->pitches[i];
106 layer->offsets[i] = fb->offsets[i];
109 DRM_DEBUG_DRIVER("%s is associated with mixer_id %d\n",
110 sti_layer_to_str(layer),
112 DRM_DEBUG_DRIVER("%s dst=(%dx%d)@(%d,%d) - src=(%dx%d)@(%d,%d)\n",
113 sti_layer_to_str(layer),
114 layer->dst_w, layer->dst_h, layer->dst_x, layer->dst_y,
115 layer->src_w, layer->src_h, layer->src_x,
118 DRM_DEBUG_DRIVER("drm FB:%d format:%.4s phys@:0x%lx\n", fb->base.id,
119 (char *)&layer->format, (unsigned long)layer->paddr);
121 if (!layer->ops->prepare)
124 ret = layer->ops->prepare(layer, !layer->enabled);
126 layer->enabled = true;
131 DRM_ERROR("Cannot prepare\n");
135 int sti_layer_commit(struct sti_layer *layer)
140 if (!layer->ops->commit)
143 return layer->ops->commit(layer);
146 DRM_ERROR("Cannot commit\n");
150 int sti_layer_disable(struct sti_layer *layer)
154 DRM_DEBUG_DRIVER("%s\n", sti_layer_to_str(layer));
161 if (!layer->ops->disable)
164 ret = layer->ops->disable(layer);
166 layer->enabled = false;
168 DRM_ERROR("Disable failed\n");
173 DRM_ERROR("Cannot disable\n");
177 const uint32_t *sti_layer_get_formats(struct sti_layer *layer)
182 if (!layer->ops->get_formats)
185 return layer->ops->get_formats(layer);
188 unsigned int sti_layer_get_nb_formats(struct sti_layer *layer)
193 if (!layer->ops->get_nb_formats)
196 return layer->ops->get_nb_formats(layer);