From: Tobias Jakobi <tjak...@math.uni-bielefeld.de>
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>
Signed-off-by: Hyungwon Hwang <human.hwang at samsung.com>
---
Changes for v3:
- Definitions of e_g2d_dir_mode, g2d_direction_val are moved to source file
from header file
exynos/exynos_fimg2d.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/exynos/exynos_fimg2d.c b/exynos/exynos_fimg2d.c
index b10620b..3bef93b 100644
--- a/exynos/exynos_fimg2d.c
+++ b/exynos/exynos_fimg2d.c
@@ -65,6 +65,44 @@ enum g2d_base_addr_reg {
g2d_src
};
+enum e_g2d_dir_mode {
+ G2D_DIR_MODE_POSITIVE = 0,
+ G2D_DIR_MODE_NEGATIVE = 1
+};
+
+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;
+};
+
static unsigned int g2d_get_scaling(unsigned int src, unsigned int dst)
{
/*
@@ -242,6 +280,19 @@ 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.
--
1.9.1
