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media: i2c: imx347 add debug interface for conversion gain

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Signed-off-by: Zefa Chen <zefa.chen@rock-chips.com>
Change-Id: Id90e2d7aaa46ecfcda06bd9c71706321159e9024
This commit is contained in:
Zefa Chen
2020-05-22 10:59:17 +08:00
parent 5b213a010d
commit b5e5546377
1 changed files with 49 additions and 3 deletions
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52
drivers/media/i2c/imx347.c
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@@ -6,6 +6,7 @@
*
* V0.0X01.0X00 first version
* V0.0X01.0X01 add conversion gain control
* V0.0X01.0X02 add debug interface for conversion gain control
*/
#include <linux/clk.h>
@@ -27,7 +28,7 @@
#include <linux/pinctrl/consumer.h>
#include <linux/rk-preisp.h>
#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x01)
#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x02)
#ifndef V4L2_CID_DIGITAL_GAIN
#define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN
@@ -72,7 +73,7 @@
#define IMX347_RHS1_REG_M 0x3069
#define IMX347_RHS1_REG_L 0x3068
#define IMX347_EXPOSURE_MIN 4
#define IMX347_EXPOSURE_MIN 2
#define IMX347_EXPOSURE_STEP 1
#define IMX347_VTS_MAX 0x7fff
@@ -118,6 +119,8 @@
#define SHR1_MIN 9
#define BRL 1556
#define USED_SYS_DEBUG
static bool g_isHCG;
#define OF_CAMERA_PINCTRL_STATE_DEFAULT "rockchip,camera_default"
@@ -1252,6 +1255,47 @@ static int imx347_set_conversion_gain(struct imx347 *imx347, u32 *cg)
return ret;
}
#ifdef USED_SYS_DEBUG
//ag: echo 0 > /sys/devices/platform/ff510000.i2c/i2c-1/1-0037/cam_s_cg
static ssize_t set_conversion_gain_status(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct imx347 *imx347 = to_imx347(sd);
int status = 0;
int ret = 0;
ret = kstrtoint(buf, 0, &status);
if (!ret && status >= 0 && status < 2)
imx347_set_conversion_gain(imx347, &status);
else
dev_err(dev, "input 0 for LCG, 1 for HCG, cur %d\n", status);
return count;
}
static struct device_attribute attributes[] = {
__ATTR(cam_s_cg, S_IWUSR, NULL, set_conversion_gain_status),
};
static int add_sysfs_interfaces(struct device *dev)
{
int i;
for (i = 0; i < ARRAY_SIZE(attributes); i++)
if (device_create_file(dev, attributes + i))
goto undo;
return 0;
undo:
for (i--; i >= 0 ; i--)
device_remove_file(dev, attributes + i);
dev_err(dev, "%s: failed to create sysfs interface\n", __func__);
return -ENODEV;
}
#endif
static long imx347_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
struct imx347 *imx347 = to_imx347(sd);
@@ -2053,7 +2097,9 @@ static int imx347_probe(struct i2c_client *client,
pm_runtime_idle(dev);
g_isHCG = false;
#ifdef USED_SYS_DEBUG
add_sysfs_interfaces(dev);
#endif
return 0;
err_clean_entity: