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media: i2c: imx335 increase hdr exposure restrictions

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Signed-off-by: Zefa Chen <zefa.chen@rock-chips.com>
Change-Id: Ia097778ddd050a566801cede46f575f6954b01d7
This commit is contained in:
Zefa Chen
2021-08-24 18:23:53 +08:00
parent 724748e1be
commit b77efbebd4
1 changed files with 22 additions and 3 deletions
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25
drivers/media/i2c/imx335.c
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@@ -10,6 +10,7 @@
* V0.0X01.0X03 add hdr_mode in enum frame interval
* V0.0X01.0X04 fix hdr ae error
* V0.0X01.0X05 add quick stream on/off
* V0.0X01.0X06 Increase hdr exposure restrictions
*/
#define DEBUG
@@ -32,7 +33,7 @@
#include <linux/pinctrl/consumer.h>
#include <linux/rk-preisp.h>
#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x05)
#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x06)
#ifndef V4L2_CID_DIGITAL_GAIN
#define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN
@@ -924,7 +925,14 @@ static int imx335_set_hdrae(struct imx335 *imx335,
rhs1_max = min(RHS1_MAX, shr0 - SHR1_MIN);
rhs1_max = (rhs1_max & ~0x7) + 2;
rhs1_min = (SHR1_MIN + 4u + 7u) / 8 * 8 + 2;
rhs1_min = max(SHR1_MIN + 4u, rhs1_old + 2 * BRL - fsc + 2);
rhs1_min = (rhs1_min + 7u) / 8 * 8 + 2;
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 = SHR1_MIN + s_exp_time;
rhs1 = (rhs1 & ~0x7) + 2; /* shall be 8n + 2 */
@@ -932,7 +940,6 @@ static int imx335_set_hdrae(struct imx335 *imx335,
rhs1 = rhs1_max;
if (rhs1 < rhs1_min)
rhs1 = rhs1_min;
dev_dbg(&client->dev,
"line(%d) rhs1 %d, short time %d rhs1_old %d, rhs1_new %d, rhs1_min %d rhs1_max %d\n",
__LINE__, rhs1, s_exp_time, rhs1_old, rhs1, rhs1_min, rhs1_max);
@@ -1106,6 +1113,12 @@ static int imx335_set_hdrae_3frame(struct imx335 *imx335,
rhs1_change_limit = rhs1_old + 3 * BRL - fsc + 3;
rhs1_change_limit = (rhs1_change_limit < 32) ? 32 : rhs1_change_limit;
rhs1_change_limit = (rhs1_change_limit + 11) / 12 * 12 + 2;
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;
@@ -1137,6 +1150,12 @@ static int imx335_set_hdrae_3frame(struct imx335 *imx335,
rhs2_change_limit = rhs2_old + 3 * BRL - fsc + 3;
rhs2_change_limit = (rhs2_change_limit < 64) ? 64 : rhs2_change_limit;
rhs2_change_limit = (rhs2_change_limit + 11) / 12 * 12 + 4;
if ((shr0 - 26) < 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 - 26, rhs2_change_limit);
return -EINVAL;
}
if (rhs2 < rhs2_change_limit)
rhs2 = rhs2_change_limit;