shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-08 03:40:35 +09:00
Code Issues Packages Projects Releases Wiki Activity

media: i2c: add strobe control & fix expsoure for ov9281.

Browse Source 
Signed-off-by: Dongbo Yang <db.yang@rock-chips.com>
Change-Id: I12ba55000c1814b4aeedc414b9ce7f6ddfb8ed19
Signed-off-by: Zefa Chen <zefa.chen@rock-chips.com>
This commit is contained in:
Dongbo Yang
2021-07-30 09:50:36 +08:00
committed by Zefa Chen
parent 15ee363aab
commit 9bcd5da6ea
1 changed files with 31 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
drivers/media/i2c/ov9281.c
View File

@@ -66,6 +66,15 @@
#define OV9281_REG_VTS 0x380e
#define OV9281_AEC_STROBE_REG 0x3927
#define OV9281_AEC_STROBE_REG_H 0x3927
#define OV9281_AEC_STROBE_REG_L 0x3928
#define OV9282_AEC_GROUP_UPDATE_ADDRESS 0x3208
#define OV9282_AEC_GROUP_UPDATE_START_DATA 0x00
#define OV9282_AEC_GROUP_UPDATE_END_DATA 0x10
#define OV9282_AEC_GROUP_UPDATE_END_LAUNCH 0xA0
#define REG_NULL 0xFFFF
#define OV9281_REG_VALUE_08BIT 1
@@ -149,6 +158,7 @@ struct ov9281 {
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *vblank;
struct v4l2_ctrl *test_pattern;
struct v4l2_ctrl *strobe;
struct mutex mutex;
bool streaming;
bool power_on;
@@ -1080,9 +1090,17 @@ static int ov9281_set_ctrl(struct v4l2_ctrl *ctrl)
switch (ctrl->id) {
case V4L2_CID_EXPOSURE:
ov9281_write_reg(ov9281->client, OV9282_AEC_GROUP_UPDATE_ADDRESS,
OV9281_REG_VALUE_08BIT, OV9282_AEC_GROUP_UPDATE_START_DATA);
/* 4 least significant bits of expsoure are fractional part */
ret = ov9281_write_reg(ov9281->client, OV9281_REG_EXPOSURE,
OV9281_REG_VALUE_24BIT, ctrl->val << 4);
ov9281_write_reg(ov9281->client, OV9282_AEC_GROUP_UPDATE_ADDRESS,
OV9281_REG_VALUE_08BIT, OV9282_AEC_GROUP_UPDATE_END_DATA);
ov9281_write_reg(ov9281->client, OV9282_AEC_GROUP_UPDATE_ADDRESS,
OV9281_REG_VALUE_08BIT, OV9282_AEC_GROUP_UPDATE_END_LAUNCH);
break;
case V4L2_CID_ANALOGUE_GAIN:
ret = ov9281_write_reg(ov9281->client, OV9281_REG_GAIN_H,
@@ -1097,6 +1115,14 @@ static int ov9281_set_ctrl(struct v4l2_ctrl *ctrl)
OV9281_REG_VALUE_16BIT,
ctrl->val + ov9281->cur_mode->height);
break;
case V4L2_CID_BRIGHTNESS:
ret = ov9281_write_reg(ov9281->client, OV9281_AEC_STROBE_REG_H,
OV9281_REG_VALUE_08BIT,
(ctrl->val >> 8) & 0xff);
ret |= ov9281_write_reg(ov9281->client, OV9281_AEC_STROBE_REG_L,
OV9281_REG_VALUE_08BIT,
ctrl->val & 0xff);
break;
case V4L2_CID_TEST_PATTERN:
ret = ov9281_enable_test_pattern(ov9281, ctrl->val);
break;
@@ -1162,6 +1188,11 @@ static int ov9281_initialize_controls(struct ov9281 *ov9281)
OV9281_GAIN_MAX, OV9281_GAIN_STEP,
OV9281_GAIN_DEFAULT);
ov9281->strobe = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
V4L2_CID_BRIGHTNESS, 1,
exposure_max/16, 1,
0xc8);
ov9281->test_pattern = v4l2_ctrl_new_std_menu_items(handler,
&ov9281_ctrl_ops, V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(ov9281_test_pattern_menu) - 1,