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media: i2c: imx415 add HDR exposure exception handling

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Signed-off-by: Zefa Chen <zefa.chen@rock-chips.com>
Change-Id: I76dea27e13442d5907cead4c7d7bd9d8b6e0696b
This commit is contained in:
Zefa Chen
2021-03-26 20:11:44 +08:00
parent dfd3780492
commit 1e8335c0a1
1 changed files with 21 additions and 0 deletions
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21
drivers/media/i2c/imx415.c
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@@ -1176,6 +1176,12 @@ static int imx415_set_hdrae_3frame(struct imx415 *imx415,
rhs1_change_limit = rhs1_old + 3 * BRL - fsc + 3;
rhs1_change_limit = (rhs1_change_limit < 25) ? 25 : rhs1_change_limit;
rhs1_change_limit = (rhs1_change_limit + 5) / 6 * 6 + 1;
if (rhs1_max < rhs1_change_limit) {
dev_err(&client->dev,
"The total exposure limit makes rhs1 max is %d,but old rhs1 limit makes rhs1 min is %d\n",
rhs1_max, rhs1_change_limit);
return -EINVAL;
}
if (rhs1 < rhs1_change_limit)
rhs1 = rhs1_change_limit;
@@ -1207,6 +1213,12 @@ static int imx415_set_hdrae_3frame(struct imx415 *imx415,
rhs2_change_limit = rhs2_old + 3 * BRL - fsc + 3;
rhs2_change_limit = (rhs2_change_limit < 50) ? 50 : rhs2_change_limit;
rhs2_change_limit = (rhs2_change_limit + 5) / 6 * 6 + 2;
if ((shr0 - 13) < rhs2_change_limit) {
dev_err(&client->dev,
"The total exposure limit makes rhs2 max is %d,but old rhs1 limit makes rhs2 min is %d\n",
shr0 - 13, rhs2_change_limit);
return -EINVAL;
}
if (rhs2 < rhs2_change_limit)
rhs2 = rhs2_change_limit;
@@ -1384,6 +1396,15 @@ static int imx415_set_hdrae(struct imx415 *imx415,
rhs1_min = max(SHR1_MIN_X2 + 8u, rhs1_old + 2 * BRL - fsc + 2);
rhs1_min = (rhs1_min + 3) / 4 * 4 + 1;
rhs1 = (SHR1_MIN_X2 + s_exp_time + 3) / 4 * 4 + 1;/* shall be 4n + 1 */
dev_dbg(&client->dev,
"line(%d) rhs1 %d, rhs1 min %d rhs1 max %d\n",
__LINE__, rhs1, rhs1_min, rhs1_max);
if (rhs1_max < rhs1_min) {
dev_err(&client->dev,
"The total exposure limit makes rhs1 max is %d,but old rhs1 limit makes rhs1 min is %d\n",
rhs1_max, rhs1_min);
return -EINVAL;
}
rhs1 = clamp(rhs1, rhs1_min, rhs1_max);
dev_dbg(&client->dev,
"line(%d) rhs1 %d, short time %d rhs1_old %d, rhs1_new %d\n",