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media: i2c: imx307 update exposure formula and max expsure

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1. max exposure = vts - 2;
2. shs1 = vts - (exp_line + 1);

Signed-off-by: Yiqing Zeng <zack.zeng@rock-chips.com>
Change-Id: Ibe955838d6f1c995f25ff2d29c911197b3186e0a
This commit is contained in:
Yiqing Zeng
2020-09-22 10:48:17 +08:00
committed by Tao Huang
parent 4566926437
commit b65bd423d8
1 changed files with 11 additions and 4 deletions
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15
drivers/media/i2c/imx307.c
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@@ -8,6 +8,9 @@
* v1.0x01.0x02
* 1.fixed lvds output data offset, because lvds regards ob line as valid data output
* 2.support test pattern
* v1.0x01.0x03 update frame rate from 25fps to 30fps
* v1.0x01.0x04 update max exposure and formula
* shs1 = vts - (line + 1)
*/
#include <linux/clk.h>
@@ -32,7 +35,7 @@
#include <linux/pinctrl/consumer.h>
#include <linux/rk-preisp.h>
#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x02)
#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x04)
#ifndef V4L2_CID_DIGITAL_GAIN
#define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN
#endif
@@ -1278,7 +1281,7 @@ static int imx307_init_conversion_gain(struct imx307 *imx307)
IMX307_REG_VALUE_08BIT,
&val);
val &= 0xef;
ret = imx307_write_reg(client,
ret |= imx307_write_reg(client,
IMX307_GAIN_SWITCH_REG,
IMX307_REG_VALUE_08BIT,
val);
@@ -1299,6 +1302,8 @@ static int __imx307_start_stream(struct imx307 *imx307)
return ret;
/* In case these controls are set before streaming */
ret = __v4l2_ctrl_handler_setup(&imx307->ctrl_handler);
if (ret)
return ret;
if (imx307->has_init_exp && imx307->cur_mode->hdr_mode != NO_HDR) {
ret = imx307_ioctl(&imx307->subdev, PREISP_CMD_SET_HDRAE_EXP,
&imx307->init_hdrae_exp);
@@ -1629,7 +1634,7 @@ static int imx307_set_ctrl(struct v4l2_ctrl *ctrl)
switch (ctrl->id) {
case V4L2_CID_VBLANK:
/* Update max exposure while meeting expected vblanking */
max = imx307->cur_mode->height + ctrl->val - 4;
max = imx307->cur_mode->height + ctrl->val - 2;
__v4l2_ctrl_modify_range(imx307->exposure,
imx307->exposure->minimum, max,
imx307->exposure->step,
@@ -1642,7 +1647,7 @@ static int imx307_set_ctrl(struct v4l2_ctrl *ctrl)
switch (ctrl->id) {
case V4L2_CID_EXPOSURE:
shs1 = imx307->cur_vts - ctrl->val;
shs1 = imx307->cur_vts - (ctrl->val + 1);
ret = imx307_write_reg(imx307->client,
IMX307_REG_SHS1_H,
IMX307_REG_VALUE_08BIT,
@@ -1895,6 +1900,8 @@ static int imx307_probe(struct i2c_client *client,
ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint),
&imx307->bus_cfg);
if (ret)
dev_warn(dev, "could not get bus config!\n");
if (imx307->bus_cfg.bus_type == 3) {
imx307->support_modes = lvds_supported_modes;
imx307->support_modes_num = ARRAY_SIZE(lvds_supported_modes);