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media: i2c: os04a10 add debug interface for conversion gain

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Signed-off-by: Zefa Chen <zefa.chen@rock-chips.com>
Change-Id: I7d60390cc97746a1bb92d40f208c2c76e42ef62e
This commit is contained in:
Zefa Chen
2020-05-22 11:08:01 +08:00
parent b5e5546377
commit dd5fed9716
1 changed files with 49 additions and 2 deletions
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51
drivers/media/i2c/os04a10.c
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@@ -6,6 +6,7 @@
*
* V0.0X01.0X00 first version.
* V0.0X01.0X01 support conversion gain switch.
* V0.0X01.0X02 add debug interface for conversion gain switch.
*/
#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
@@ -101,6 +102,8 @@
#define OS04A10_NAME "os04a10"
#define USED_SYS_DEBUG
struct preisp_hdrae_exp_s init_hdrae_exp;
static const char * const os04a10_supply_names[] = {
@@ -1338,6 +1341,7 @@ static int os04a10_set_conversion_gain(struct os04a10 *os04a10, u32 *cg)
u32 val = 0;
s32 is_need_change = 0;
dev_dbg(&os04a10->client->dev, "set conversion gain %d\n", cur_cg);
ret = os04a10_read_reg(client,
OS04A10_REG_HCG_SWITCH,
OS04A10_REG_VALUE_08BIT,
@@ -1371,6 +1375,47 @@ static int os04a10_set_conversion_gain(struct os04a10 *os04a10, u32 *cg)
return ret;
}
#ifdef USED_SYS_DEBUG
//ag: echo 0 > /sys/devices/platform/ff510000.i2c/i2c-1/1-0036-1/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 os04a10 *os04a10 = to_os04a10(sd);
int status = 0;
int ret = 0;
ret = kstrtoint(buf, 0, &status);
if (!ret && status >= 0 && status < 2)
os04a10_set_conversion_gain(os04a10, &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 os04a10_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
struct os04a10 *os04a10 = to_os04a10(sd);
@@ -2153,7 +2198,9 @@ static int os04a10_probe(struct i2c_client *client,
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
pm_runtime_idle(dev);
#ifdef USED_SYS_DEBUG
add_sysfs_interfaces(dev);
#endif
return 0;
err_clean_entity: