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exynos: fimg2d: add g2d_set_direction 

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@samsung.com>
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Hyungwon Hwang <human.hwang@samsung.com>
main
Tobias Jakobi 2015-11-30 12:12:18 +09:00 committed by Emil Velikov
parent 1b32e5da44
commit 51fd93bc38
1 changed files with 51 additions and 0 deletions
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51
exynos/exynos_fimg2d.c
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@ -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)
{
/*
@ -241,6 +279,19 @@ static void g2d_add_base_addr(struct g2d_context *ctx, struct g2d_image *img,
g2d_add_cmd(ctx, cmd, img->bo[0]);
}
/*
* 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.
*