new file mode 100644
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2013
+ * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
+ * Fabien Dessenne <fabien.dessenne@st.com>
+ * for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#ifndef _STI_LAYER_H_
+#define _STI_LAYER_H_
+
+#include <drm/drmP.h>
+
+#define to_sti_layer(x) container_of(x, struct sti_layer, plane)
+
+#define STI_LAYER_TYPE_SHIFT 8
+#define STI_LAYER_TYPE_MASK (~((1<<STI_LAYER_TYPE_SHIFT)-1))
+
+
+enum sti_layer_type {
+ STI_GDP = 1 << STI_LAYER_TYPE_SHIFT,
+ STI_VID = 2 << STI_LAYER_TYPE_SHIFT,
+ STI_CUR = 3 << STI_LAYER_TYPE_SHIFT,
+ STI_BCK = 4 << STI_LAYER_TYPE_SHIFT
+};
+
+enum sti_layer_id_of_type {
+ STI_ID_0 = 0,
+ STI_ID_1 = 1,
+ STI_ID_2 = 2,
+ STI_ID_3 = 3
+};
+
+enum sti_layer_desc {
+ STI_GDP_0 = STI_GDP | STI_ID_0,
+ STI_GDP_1 = STI_GDP | STI_ID_1,
+ STI_GDP_2 = STI_GDP | STI_ID_2,
+ STI_GDP_3 = STI_GDP | STI_ID_3,
+ STI_VID_0 = STI_VID | STI_ID_0,
+ STI_VID_1 = STI_VID | STI_ID_1,
+ STI_CURSOR = STI_CUR,
+ STI_BACK = STI_BCK
+};
+
+struct sti_fps_info {
+ bool output;
+ int curr_frame_counter;
+ int last_frame_counter;
+ struct timespec last_timestamp;
+};
+
+/*
+ * STI layer structure
+ *
+ * @plane: drm plane it is bound to (if any)
+ * @fb: drm fb it is bound to
+ * @mode: display mode
+ * @desc: layer type & id
+ * @zorder: layer z-order
+ * @enabled: to know if the layer is active or not
+ * @src_x src_y: coordinates of the input (fb) area
+ * @src_w src_h: size of the input (fb) area
+ * @dst_x dst_y: coordinates of the output (crtc) area
+ * @dst_w dst_h: size of the output (crtc) area
+ * @format: format
+ * @pitches: pitch of 'planes' (eg: Y, U, V)
+ * @offsets: offset of 'planes'
+ * @paddr: physical address of the input buffer
+ * @fps_info: frame per second info
+ */
+struct sti_layer {
+ struct drm_plane plane;
+ struct drm_framebuffer *fb;
+ struct drm_display_mode *mode;
+ enum sti_layer_desc desc;
+ int zorder;
+ bool enabled;
+ int src_x, src_y;
+ int src_w, src_h;
+ int dst_x, dst_y;
+ int dst_w, dst_h;
+ uint32_t format;
+ int pitches[4];
+ int offsets[4];
+ dma_addr_t paddr;
+ struct sti_fps_info fps_info;
+};
+
+struct sti_layer *sti_layer_create(struct device *dev, int desc,
+ void __iomem *baseaddr);
+int sti_layer_prepare(struct sti_layer *layer, struct drm_framebuffer *fb,
+ struct drm_display_mode *mode,
+ 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 sti_layer_commit(struct sti_layer *layer);
+int sti_layer_disable(struct sti_layer *layer);
+const uint32_t *sti_layer_get_formats(struct sti_layer *layer);
+int sti_layer_get_nb_formats(struct sti_layer *layer);
+struct sti_layer *sti_layer_find_layer(struct sti_layer *layer[],
+ enum sti_layer_desc desc);
+const char *sti_layer_to_str(struct sti_layer *layer);
+#endif
STI hardware have various input sub-devices before mixing block. Each type of sub-device have different capabilities for scaling, filtering or accepted pixel format. This layer interface abstract those differences and make the interaction with compositor more simple. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> --- drivers/gpu/drm/sti/sti_layer.h | 104 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 drivers/gpu/drm/sti/sti_layer.h