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video: rockchip: rga3: fix boundary protection for RGA2 average

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Change-Id: Id646a2c5fd1a4e5335cbb049a8263ca9c25deabc
Signed-off-by: Yu Qiaowei <cerf.yu@rock-chips.com>
This commit is contained in:
Yu Qiaowei
2025-02-08 09:49:06 +08:00
parent 668a142bfb
commit 60e3a31479
1 changed files with 20 additions and 2 deletions
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22
drivers/video/rockchip/rga3/rga2_reg_info.c
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@@ -133,6 +133,22 @@ static void rga2_scale_down_bilinear_protect(u32 *param_fix, u32 *src_fix,
*src_fix = final_steps + 1;
}
static void rag2_scale_down_average_protect(u32 *param_fix, u32 param,
u32 src, u32 dst)
{
/* division Loss */
param = param + 1;
/*
* Ensure that the (src - 1) drop point is to the left of the last
* point of the dst.
*/
while ((param * (src - 1)) > (dst << 16))
param--;
*param_fix = param;
}
static void RGA2_reg_get_param(unsigned char *base, struct rga2_req *msg)
{
u32 *bRGA_SRC_X_FACTOR;
@@ -182,7 +198,8 @@ static void RGA2_reg_get_param(unsigned char *base, struct rga2_req *msg)
((*bRGA_SRC_ACT_INFO & (~m_RGA2_SRC_ACT_INFO_SW_SRC_ACT_WIDTH)) |
s_RGA2_SRC_ACT_INFO_SW_SRC_ACT_WIDTH((src_fix - 1)));
} else {
param_x = ((dw << 16) + (sw / 2)) / sw;
param_x = (dw << 16) / sw;
rag2_scale_down_average_protect(&param_x, param_x, sw, dw);
*bRGA_SRC_X_FACTOR |= ((param_x & 0xffff) << 0);
}
@@ -219,7 +236,8 @@ static void RGA2_reg_get_param(unsigned char *base, struct rga2_req *msg)
((*bRGA_SRC_ACT_INFO & (~m_RGA2_SRC_ACT_INFO_SW_SRC_ACT_HEIGHT)) |
s_RGA2_SRC_ACT_INFO_SW_SRC_ACT_HEIGHT((src_fix - 1)));
} else {
param_y = ((dh << 16) + (sh / 2)) / sh;
param_y = (dh << 16) / sh;
rag2_scale_down_average_protect(&param_y, param_y, sh, dh);
*bRGA_SRC_Y_FACTOR |= ((param_y & 0xffff) << 0);
}