This allows setting the two direction registers, which specify how
the engine blits pixels. This can be used for overlapping blits,
which happen e.g. when 'moving' a rectangular region inside a
fixed buffer.
Reviewed-by: Hyungwon Hwang <human.hwang at samsung.com>
Signed-off-by: Tobias Jakobi <tjakobi at math.uni-bielefeld.de>
---
exynos/exynos_fimg2d.c | 13 +++++++++++++
exynos/exynos_fimg2d.h | 38 ++++++++++++++++++++++++++++++++++++++
2 files changed, 51 insertions(+)
diff --git a/exynos/exynos_fimg2d.c b/exynos/exynos_fimg2d.c
index e997d4b..4d5419c 100644
--- a/exynos/exynos_fimg2d.c
+++ b/exynos/exynos_fimg2d.c
@@ -242,6 +242,19 @@ static void g2d_add_base_addr(struct g2d_context *ctx,
struct g2d_image *img,
}
/*
+ * g2d_set_direction - setup direction register (useful for overlapping blits).
+ *
+ * @ctx: a pointer to g2d_context structure.
+ * @dir: a pointer to the g2d_direction_val structure.
+ */
+static void g2d_set_direction(struct g2d_context *ctx,
+ const union g2d_direction_val *dir)
+{
+ g2d_add_cmd(ctx, SRC_MASK_DIRECT_REG, dir->val[0]);
+ g2d_add_cmd(ctx, DST_PAT_DIRECT_REG, dir->val[1]);
+}
+
+/*
* g2d_reset - reset fimg2d hardware.
*
* @ctx: a pointer to g2d_context structure.
diff --git a/exynos/exynos_fimg2d.h b/exynos/exynos_fimg2d.h
index c6b58ac..9eee7c0 100644
--- a/exynos/exynos_fimg2d.h
+++ b/exynos/exynos_fimg2d.h
@@ -189,6 +189,11 @@ enum e_g2d_exec_flag {
G2D_EXEC_FLAG_ASYNC = (1 << 0)
};
+enum e_g2d_dir_mode {
+ G2D_DIR_MODE_POSITIVE = 0,
+ G2D_DIR_MODE_NEGATIVE = 1
+};
+
union g2d_point_val {
unsigned int val;
struct {
@@ -269,6 +274,39 @@ union g2d_blend_func_val {
} data;
};
+union g2d_direction_val {
+ unsigned int val[2];
+ struct {
+ /* SRC_MSK_DIRECT_REG [0:1] (source) */
+ enum e_g2d_dir_mode src_x_direction:1;
+ enum e_g2d_dir_mode src_y_direction:1;
+
+ /* SRC_MSK_DIRECT_REG [2:3] */
+ unsigned int reversed1:2;
+
+ /* SRC_MSK_DIRECT_REG [4:5] (mask) */
+ enum e_g2d_dir_mode mask_x_direction:1;
+ enum e_g2d_dir_mode mask_y_direction:1;
+
+ /* SRC_MSK_DIRECT_REG [6:31] */
+ unsigned int padding1:26;
+
+ /* DST_PAT_DIRECT_REG [0:1] (destination) */
+ enum e_g2d_dir_mode dst_x_direction:1;
+ enum e_g2d_dir_mode dst_y_direction:1;
+
+ /* DST_PAT_DIRECT_REG [2:3] */
+ unsigned int reversed2:2;
+
+ /* DST_PAT_DIRECT_REG [4:5] (pattern) */
+ enum e_g2d_dir_mode pat_x_direction:1;
+ enum e_g2d_dir_mode pat_y_direction:1;
+
+ /* DST_PAT_DIRECT_REG [6:31] */
+ unsigned int padding2:26;
+ } data;
+};
+
struct g2d_image {
enum e_g2d_select_mode select_mode;
enum e_g2d_color_mode color_mode;
--
2.4.9
