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media: rockchip: ispp: add check to avoid ram overflow

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Signed-off-by: Hu Kejun <william.hu@rock-chips.com>
Change-Id: Ic8b94ded20b7d5697916b403ef557aedb81c159d
This commit is contained in:
Hu Kejun
2020-04-03 11:39:53 +08:00
committed by Tao Huang
parent f26122ecf7
commit 16d3ed56fb
1 changed files with 20 additions and 2 deletions
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22
drivers/media/platform/rockchip/ispp/params.c
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@@ -31,6 +31,17 @@
ISPP_MODULE_SHP | \
ISPP_MODULE_ORB)
#define ISPP_NOBIG_OVERFLOW_SIZE (2560 * 1440)
static inline size_t get_input_size(struct rkispp_params_vdev *params_vdev)
{
struct rkispp_device *dev = params_vdev->dev;
struct rkispp_subdev *isp_sdev = &dev->ispp_sdev;
struct v4l2_mbus_framefmt *frmfmt = &isp_sdev->in_fmt.format;
return frmfmt->width * frmfmt->height;
}
static void tnr_config(struct rkispp_params_vdev *params_vdev,
struct rkispp_tnr_config *arg)
{
@@ -303,11 +314,18 @@ static void nr_enable(struct rkispp_params_vdev *params_vdev, bool en,
struct rkispp_nr_config *arg)
{
void __iomem *base = params_vdev->dev->base_addr;
u8 big_en, nobig_en;
u32 val;
big_en = arg->uvnr_big_en & 0x01;
nobig_en = arg->uvnr_nobig_en & 0x01;
if (get_input_size(params_vdev) > ISPP_NOBIG_OVERFLOW_SIZE) {
big_en = 1;
nobig_en = 0;
}
val = arg->uvnr_step1_en << 1 | arg->uvnr_step2_en << 2 |
arg->nr_gain_en << 3 | arg->uvnr_nobig_en << 5 |
arg->uvnr_big_en << 6;
arg->nr_gain_en << 3 | nobig_en << 5 | big_en << 6;
if (en)
val |= SW_NR_EN;