完整的项目文件
文件1: sdf_dals_z1.h
c
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __SDF_DALS_Z1_H__
#define __SDF_DALS_Z1_H__
// 寄存器定义 (根据数据手册第7页)
#define SDF_DALS_Z1_REG_SYSM_CTRL 0x00
#define SDF_DALS_Z1_REG_GAIN 0x04
#define SDF_DALS_Z1_REG_ITIME 0x05
#define SDF_DALS_Z1_REG_STATUS 0x17
#define SDF_DALS_Z1_REG_LUX_LOW 0x1E
#define SDF_DALS_Z1_REG_LUX_HIGH 0x1F
#define SDF_DALS_Z1_REG_PROD_ID_L 0xBC
#define SDF_DALS_Z1_REG_PROD_ID_H 0xBD
// 状态寄存器位定义 (第11页)
#define SDF_DALS_DATA_READY (1 << 7)
#define SDF_DALS_SAT_ALS (1 << 0)
// 系统控制寄存器位定义 (第8页)
#define SDF_DALS_SWRST (1 << 7)
#define SDF_DALS_EN_ALS (1 << 0)
#endif
文件2: sdf_dals_z1.c
c
// SPDX-License-Identifier: GPL-2.0
/*
* SDF-DALS-Z1 Ambient Light Sensor Driver
* for RK3576 I2C6 bus
*/
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/workqueue.h>
#include <linux/of.h>
#include <linux/sysfs.h>
#include <linux/debugfs.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include "sdf_dals_z1.h"
#define DRIVER_NAME "sdf_dals_z1"
#define DEFAULT_POLL_INTERVAL 700
#define DEVICE_NAME "sdf_dals_z1_light_sensor"
struct sdf_dals_z1_data {
struct i2c_client *client;
struct input_dev *input;
struct delayed_work work;
struct mutex lock;
struct dentry *debug_dir;
int enable;
int poll_interval;
int value;
int loglevel;
};
/* 验证设备ID */
static int sdf_dals_z1_verify_device(struct i2c_client *client)
{
int prod_id_l, prod_id_h;
// 读取产品ID (第7页: PROD_ID_L=0xBC, PROD_ID_H=0xBD)
prod_id_l = i2c_smbus_read_byte_data(client, SDF_DALS_Z1_REG_PROD_ID_L);
if (prod_id_l < 0) {
dev_err(&client->dev, "读取产品ID低字节失败: %d\n", prod_id_l);
return prod_id_l;
}
prod_id_h = i2c_smbus_read_byte_data(client, SDF_DALS_Z1_REG_PROD_ID_H);
if (prod_id_h < 0) {
dev_err(&client->dev, "读取产品ID高字节失败: %d\n", prod_id_h);
return prod_id_h;
}
// 验证产品ID (第7页: 默认值0x11, 0x10)
if (prod_id_l != 0x11 || prod_id_h != 0x10) {
dev_err(&client->dev, "产品ID不匹配: 期望 0x10 0x11, 实际 0x%02x 0x%02x\n",
prod_id_h, prod_id_l);
return -ENODEV;
}
dev_info(&client->dev, "检测到SDF-DALS-Z1传感器 (ID: 0x%02x%02x)\n",
prod_id_h, prod_id_l);
return 0;
}
/* 初始化传感器 */
static int sdf_dals_z1_init_device(struct i2c_client *client)
{
int ret;
dev_info(&client->dev, "初始化SDF-DALS-Z1传感器...\n");
// 1. 验证产品ID
ret = sdf_dals_z1_verify_device(client);
if (ret) {
dev_err(&client->dev, "设备验证失败\n");
return ret;
}
// 2. 软件复位
ret = i2c_smbus_write_byte_data(client, SDF_DALS_Z1_REG_SYSM_CTRL, SDF_DALS_SWRST);
if (ret < 0) {
dev_err(&client->dev, "软件复位失败: %d\n", ret);
return ret;
}
msleep(25); // 等待复位完成(数据手册建议20ms，加5ms余量)
// 3. 配置增益x1 (第9页)
ret = i2c_smbus_write_byte_data(client, SDF_DALS_Z1_REG_GAIN, 0x01);
if (ret < 0) {
dev_err(&client->dev, "配置增益失败: %d\n", ret);
return ret;
}
// 4. 配置积分时间 (第10页: ALSCONV=0xf, INT_TIME=0x3)
ret = i2c_smbus_write_byte_data(client, SDF_DALS_Z1_REG_ITIME, 0xF3);
if (ret < 0) {
dev_err(&client->dev, "配置积分时间失败: %d\n", ret);
return ret;
}
// 5. 启用ALS功能
ret = i2c_smbus_write_byte_data(client, SDF_DALS_Z1_REG_SYSM_CTRL, SDF_DALS_EN_ALS);
if (ret < 0) {
dev_err(&client->dev, "启用ALS功能失败: %d\n", ret);
return ret;
}
dev_info(&client->dev, "传感器初始化完成\n");
return 0;
}
/* 读取光照值 */
static int sdf_dals_z1_read_lux(struct i2c_client *client)
{
int low_byte, high_byte;
int status;
// 检查数据状态 (第11页: DATA_REDY标志)
status = i2c_smbus_read_byte_data(client, SDF_DALS_Z1_REG_STATUS);
if (status < 0) {
dev_err(&client->dev, "读取状态寄存器失败: %d\n", status);
return status;
}
// 检查数据就绪标志 (bit7)
if (!(status & SDF_DALS_DATA_READY)) {
return -EAGAIN; // 数据未就绪
}
// 检查饱和标志 (第11页: SAT_ALS标志)
if (status & SDF_DALS_SAT_ALS) {
dev_warn(&client->dev, "光照数据饱和\n");
return -ERANGE;
}
// 读取低字节
low_byte = i2c_smbus_read_byte_data(client, SDF_DALS_Z1_REG_LUX_LOW);
if (low_byte < 0) {
dev_err(&client->dev, "读取光照低字节失败: %d\n", low_byte);
return low_byte;
}
// 读取高字节
high_byte = i2c_smbus_read_byte_data(client, SDF_DALS_Z1_REG_LUX_HIGH);
if (high_byte < 0) {
dev_err(&client->dev, "读取光照高字节失败: %d\n", high_byte);
return high_byte;
}
return (high_byte << 8) | low_byte;
}
/* 工作队列处理函数 */
static void sdf_dals_z1_work_func(struct work_struct *work)
{
struct sdf_dals_z1_data *data = container_of(to_delayed_work(work),
struct sdf_dals_z1_data, work);
int lux;
if (!data->enable)
return;
lux = sdf_dals_z1_read_lux(data->client);
if (lux < 0) {
if (lux == -EAGAIN) {
// 数据未就绪，正常情况
if (data->loglevel >= 3)
dev_dbg(&data->client->dev, "数据未就绪\n");
} else if (lux == -ERANGE) {
// 数据饱和
if (data->loglevel >= 1)
dev_warn(&data->client->dev, "光照数据饱和\n");
} else {
// 其他错误
if (data->loglevel >= 1)
dev_err(&data->client->dev, "读取光照值失败: %d\n", lux);
}
} else {
data->value = lux;
// 通过Input子系统上报数据
input_report_abs(data->input, ABS_MISC, lux);
input_sync(data->input);
if (data->loglevel >= 2)
dev_info(&data->client->dev, "光照强度: %d lux\n", lux);
}
// 重新调度工作
if (data->enable) {
schedule_delayed_work(&data->work, msecs_to_jiffies(data->poll_interval));
}
}
/* SysFS属性接口 */
static ssize_t enable_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct sdf_dals_z1_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", data->enable);
}
static ssize_t enable_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sdf_dals_z1_data *data = dev_get_drvdata(dev);
int val, ret;
if (kstrtoint(buf, 10, &val) != 0)
return -EINVAL;
mutex_lock(&data->lock);
data->enable = !!val;
if (data->enable) {
// 启用传感器
ret = i2c_smbus_write_byte_data(data->client, SDF_DALS_Z1_REG_SYSM_CTRL, SDF_DALS_EN_ALS);
if (ret >= 0) {
schedule_delayed_work(&data->work, 0);
dev_info(dev, "传感器已启用\n");
}
} else {
// 禁用传感器
i2c_smbus_write_byte_data(data->client, SDF_DALS_Z1_REG_SYSM_CTRL, 0);
cancel_delayed_work_sync(&data->work);
dev_info(dev, "传感器已禁用\n");
}
mutex_unlock(&data->lock);
return count;
}
static DEVICE_ATTR_RW(enable);
static ssize_t delay_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct sdf_dals_z1_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", data->poll_interval);
}
static ssize_t delay_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sdf_dals_z1_data *data = dev_get_drvdata(dev);
int val;
if (kstrtoint(buf, 10, &val) != 0)
return -EINVAL;
if (val < 100 || val > 5000) {
dev_err(dev, "采集间隔必须在100-5000ms之间\n");
return -EINVAL;
}
mutex_lock(&data->lock);
data->poll_interval = val;
// 如果正在运行，重新调度工作
if (data->enable) {
cancel_delayed_work_sync(&data->work);
schedule_delayed_work(&data->work, msecs_to_jiffies(data->poll_interval));
}
mutex_unlock(&data->lock);
return count;
}
static DEVICE_ATTR_RW(delay);
static ssize_t value_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct sdf_dals_z1_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", data->value);
}
static DEVICE_ATTR_RO(value);
static ssize_t loglevel_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct sdf_dals_z1_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", data->loglevel);
}
static ssize_t loglevel_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sdf_dals_z1_data *data = dev_get_drvdata(dev);
int val;
if (kstrtoint(buf, 10, &val) != 0)
return -EINVAL;
if (val < 0 || val > 3) {
dev_err(dev, "日志级别必须是0-3 (0:关闭, 1:错误, 2:信息, 3:调试)\n");
return -EINVAL;
}
data->loglevel = val;
return count;
}
static DEVICE_ATTR_RW(loglevel);
static struct attribute *sdf_dals_z1_attrs[] = {
&dev_attr_enable.attr,
&dev_attr_delay.attr,
&dev_attr_value.attr,
&dev_attr_loglevel.attr,
NULL,
};
static const struct attribute_group sdf_dals_z1_attr_group = {
.attrs = sdf_dals_z1_attrs,
};
/* DebugFS支持 */
static int debug_value_show(void *data, u64 *val)
{
struct sdf_dals_z1_data *drv = data;
*val = drv->value;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(debug_value_fops, debug_value_show, NULL, "%llu\n");
static int debug_registers_show(struct seq_file *s, void *v)
{
struct sdf_dals_z1_data *data = s->private;
int status, gain, itime;
status = i2c_smbus_read_byte_data(data->client, SDF_DALS_Z1_REG_STATUS);
gain = i2c_smbus_read_byte_data(data->client, SDF_DALS_Z1_REG_GAIN);
itime = i2c_smbus_read_byte_data(data->client, SDF_DALS_Z1_REG_ITIME);
seq_printf(s, "SDF-DALS-Z1 寄存器状态:\n");
seq_printf(s, "STATUS: 0x%02x\n", status);
seq_printf(s, "GAIN: 0x%02x\n", gain);
seq_printf(s, "ITIME: 0x%02x\n", itime);
seq_printf(s, "数据就绪: %s\n", (status & SDF_DALS_DATA_READY) ? "是" : "否");
seq_printf(s, "数据饱和: %s\n", (status & SDF_DALS_SAT_ALS) ? "是" : "否");
return 0;
}
static int debug_registers_open(struct inode *inode, struct file *file)
{
return single_open(file, debug_registers_show, inode->i_private);
}
static const struct file_operations debug_registers_fops = {
.owner = THIS_MODULE,
.open = debug_registers_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/* 驱动探测函数 */
static int sdf_dals_z1_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct sdf_dals_z1_data *data;
struct input_dev *input;
int err;
dev_info(&client->dev, "开始探测SDF-DALS-Z1光照传感器驱动\n");
// 检查I2C功能支持
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
dev_err(&client->dev, "I2C适配器不支持SMBUS字节操作\n");
return -EIO;
}
// 分配驱动数据结构
data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
mutex_init(&data->lock);
data->client = client;
data->enable = 1; // 默认启用
data->poll_interval = DEFAULT_POLL_INTERVAL;
data->loglevel = 1; // 默认显示错误和信息日志
// 分配和设置输入设备
input = devm_input_allocate_device(&client->dev);
if (!input) {
dev_err(&client->dev, "分配输入设备失败\n");
return -ENOMEM;
}
input->name = DEVICE_NAME;
input->id.bustype = BUS_I2C;
input->dev.parent = &client->dev;
// 设置输入能力 - 光照强度值
input_set_capability(input, EV_ABS, ABS_MISC);
input_set_abs_params(input, ABS_MISC, 0, 65535, 0, 0);
data->input = input;
input_set_drvdata(input, data);
// 注册输入设备
err = input_register_device(input);
if (err) {
dev_err(&client->dev, "注册输入设备失败: %d\n", err);
return err;
}
// 设置I2C客户端数据
i2c_set_clientdata(client, data);
// 初始化工作队列
INIT_DELAYED_WORK(&data->work, sdf_dals_z1_work_func);
// 创建sysfs接口
err = sysfs_create_group(&client->dev.kobj, &sdf_dals_z1_attr_group);
if (err) {
dev_err(&client->dev, "创建sysfs接口失败: %d\n", err);
goto err_input_unregister;
}
// 创建debugfs接口
data->debug_dir = debugfs_create_dir("sdf_dals_z1", NULL);
if (data->debug_dir) {
debugfs_create_file("value", 0444, data->debug_dir, data, &debug_value_fops);
debugfs_create_file("registers", 0444, data->debug_dir, data, &debug_registers_fops);
}
// 初始化传感器
err = sdf_dals_z1_init_device(client);
if (err) {
dev_err(&client->dev, "传感器初始化失败: %d\n", err);
goto err_sysfs_remove;
}
// 启动工作队列
schedule_delayed_work(&data->work, msecs_to_jiffies(100));
dev_info(&client->dev, "SDF-DALS-Z1光照传感器驱动加载成功\n");
return 0;
err_sysfs_remove:
sysfs_remove_group(&client->dev.kobj, &sdf_dals_z1_attr_group);
err_input_unregister:
input_unregister_device(input);
return err;
}
/* 驱动移除函数 */
static int sdf_dals_z1_remove(struct i2c_client *client)
{
struct sdf_dals_z1_data *data = i2c_get_clientdata(client);
// 停止工作队列
cancel_delayed_work_sync(&data->work);
// 禁用传感器
i2c_smbus_write_byte_data(client, SDF_DALS_Z1_REG_SYSM_CTRL, 0);
// 清理debugfs
if (data->debug_dir)
debugfs_remove_recursive(data->debug_dir);
// 清理sysfs
sysfs_remove_group(&client->dev.kobj, &sdf_dals_z1_attr_group);
dev_info(&client->dev, "SDF-DALS-Z1光照传感器驱动已卸载\n");
return 0;
}
/* 设备树匹配表 */
static const struct of_device_id sdf_dals_z1_of_match[] = {
{ .compatible = "sdf,dals-z1" },
{ }
};
MODULE_DEVICE_TABLE(of, sdf_dals_z1_of_match);
/* 设备ID表 */
static const struct i2c_device_id sdf_dals_z1_id[] = {
{ "sdf_dals_z1", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, sdf_dals_z1_id);
/* I2C驱动结构 */
static struct i2c_driver sdf_dals_z1_driver = {
.driver = {
.name = DRIVER_NAME,
.of_match_table = sdf_dals_z1_of_match,
},
.probe = sdf_dals_z1_probe,
.remove = sdf_dals_z1_remove,
.id_table = sdf_dals_z1_id,
};
module_i2c_driver(sdf_dals_z1_driver);
MODULE_AUTHOR("Your Name");
MODULE_DESCRIPTION("SDF-DALS-Z1 Ambient Light Sensor Driver for RK3576");
MODULE_LICENSE("GPL");
MODULE_VERSION("1.0");
文件3: Makefile
makefile
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_SDF_DALS_Z1) += sdf_dals_z1.o
文件4: Kconfig
kconfig
# SPDX-License-Identifier: GPL-2.0
config SDF_DALS_Z1
tristate "SDF-DALS-Z1 Ambient Light Sensor support"
depends on I2C && INPUT
help
Say Y here to enable support for the SDF-DALS-Z1 ambient light sensor.
This driver provides support for the SDF-DALS-Z1 digital ambient
light sensor with I2C interface.
To compile this driver as a module, choose M here: the module
will be called sdf_dals_z1.
文件5: 设备树配置 (添加到 rk3576-xxx.dts)
dts
// 在 i2c6 节点中添加
&i2c6 {
status = "okay";
sdf_dals_z1: light-sensor@38 {
compatible = "sdf,dals-z1";
reg = <0x38>;
status = "okay";
};
};
文件6: test_light_sensor.c (用户空间测试程序)
c
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <linux/input.h>
#include <string.h>
#include <errno.h>
int main(int argc, char *argv[])
{
int fd;
struct input_event ev;
char device_path[32];
int found = 0;
printf("=== SDF-DALS-Z1 光照传感器测试程序 ===\n");
// 自动查找input设备
for (int i = 0; i < 10; i++) {
snprintf(device_path, sizeof(device_path), "/dev/input/event%d", i);
fd = open(device_path, O_RDONLY | O_NONBLOCK);
if (fd >= 0) {
char name[256] = "Unknown";
ioctl(fd, EVIOCGNAME(sizeof(name)), name);
if (strstr(name, "sdf_dals_z1") != NULL) {
printf("找到光照传感器: %s (%s)\n", device_path, name);
found = 1;
break;
}
close(fd);
}
}
if (!found) {
printf("错误: 未找到光照传感器设备\n");
return 1;
}
printf("开始监听光照强度变化...\n");
printf("按 Ctrl+C 退出\n\n");
while (1) {
int ret = read(fd, &ev, sizeof(ev));
if (ret == sizeof(ev)) {
if (ev.type == EV_ABS && ev.code == ABS_MISC) {
printf("光照强度: %d lux\n", ev.value);
}
} else if (ret == -1 && errno != EAGAIN) {
perror("读取设备失败");
break;
}
usleep(100000); // 100ms
}
close(fd);
return 0;
}
文件7: test_script.sh (自动化测试脚本)
bash
#!/bin/bash
echo "================================================"
echo " SDF-DALS-Z1 驱动完整测试脚本"
echo "================================================"
MODULE="sdf_dals_z1"
DEVICE_PATH="/sys/bus/i2c/devices/6-0038"
INPUT_DEVICE=""
# 颜色定义
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color
print_status() {
if [ $1 -eq 0 ]; then
echo -e "${GREEN}[OK]${NC} $2"
else
echo -e "${RED}[FAIL]${NC} $2"
fi
}
# 1. 检查驱动是否加载
echo -e "\n1. 检查驱动加载状态"
if lsmod | grep -q $MODULE; then
print_status 0 "驱动已加载"
else
echo -e "${YELLOW}[INFO]${NC} 驱动未加载，尝试加载..."
insmod $MODULE.ko 2>/dev/null
if [ $? -eq 0 ]; then
print_status 0 "驱动加载成功"
else
print_status 1 "驱动加载失败"
exit 1
fi
fi
# 2. 检查设备是否存在
echo -e "\n2. 检查设备节点"
if [ -d "$DEVICE_PATH" ]; then
print_status 0 "设备节点存在: $DEVICE_PATH"
else
print_status 1 "设备节点不存在"
exit 1
fi
# 3. 检查input设备
echo -e "\n3. 查找Input设备"
INPUT_DEVICE=$(grep -l "sdf_dals_z1" /sys/class/input/event*/device/name 2>/dev/null | head -1)
if [ -n "$INPUT_DEVICE" ]; then
INPUT_DEVICE="/dev/input/$(basename $(dirname $INPUT_DEVICE))"
print_status 0 "找到Input设备: $INPUT_DEVICE"
else
print_status 1 "未找到Input设备"
fi
# 4. 测试SysFS接口
echo -e "\n4. 测试SysFS控制接口"
# 测试enable属性
echo -n "测试enable开关... "
echo 0 > $DEVICE_PATH/enable
sleep 1
ENABLE_STATUS=$(cat $DEVICE_PATH/enable)
if [ "$ENABLE_STATUS" = "0" ]; then
echo -ne "${GREEN}关闭${NC} "
else
echo -ne "${RED}关闭失败${NC} "
fi
echo 1 > $DEVICE_PATH/enable
sleep 1
ENABLE_STATUS=$(cat $DEVICE_PATH/enable)
if [ "$ENABLE_STATUS" = "1" ]; then
echo -e "${GREEN}开启${NC}"
else
echo -e "${RED}开启失败${NC}"
fi
# 测试delay属性
echo -n "测试采集间隔... "
echo 500 > $DEVICE_PATH/delay
DELAY_STATUS=$(cat $DEVICE_PATH/delay)
if [ "$DELAY_STATUS" = "500" ]; then
echo -e "${GREEN}设置成功: ${DELAY_STATUS}ms${NC}"
else
echo -e "${RED}设置失败${NC}"
fi
# 恢复默认间隔
echo 700 > $DEVICE_PATH/delay
# 5. 读取光照值
echo -e "\n5. 测试数据读取"
echo -n "当前光照值: "
for i in {1..3}; do
VALUE=$(cat $DEVICE_PATH/value)
echo -n "$VALUE "
sleep 0.7
done
echo ""
# 6. 测试日志级别
echo -e "\n6. 测试日志级别控制"
echo 2 > $DEVICE_PATH/loglevel
LOG_LEVEL=$(cat $DEVICE_PATH/loglevel)
echo -e "当前日志级别: ${GREEN}${LOG_LEVEL}${NC} (0:关闭, 1:错误, 2:信息, 3:调试)"
# 7. 检查debugfs
echo -e "\n7. 检查DebugFS接口"
if [ -d "/sys/kernel/debug/sdf_dals_z1" ]; then
print_status 0 "DebugFS接口可用"
echo "光照值: $(cat /sys/kernel/debug/sdf_dals_z1/value)"
else
print_status 1 "DebugFS接口不可用"
fi
# 8. 显示内核日志
echo -e "\n8. 最近的内核日志"
dmesg | tail -5 | grep -i sdf_dals
echo -e "\n================================================"
echo -e " 测试完成！驱动功能${GREEN}正常${NC}"
echo -e "================================================"
echo -e "使用说明:"
echo -e " 控制采集: echo [0/1] > $DEVICE_PATH/enable"
echo -e " 设置间隔: echo [ms] > $DEVICE_PATH/delay"
echo -e " 读取数值: cat $DEVICE_PATH/value"
echo -e " 实时监控: ./test_light_sensor"
echo -e "================================================"
🚀 使用说明
编译步骤：
bash
# 1. 设置编译环境
export ARCH=arm64
export CROSS_COMPILE=aarch64-linux-gnu-
export KERNEL_DIR=/path/to/rk3576/kernel
# 2. 编译驱动
make
# 3. 编译测试程序
aarch64-linux-gnu-gcc -static -o test_light_sensor test_light_sensor.c
# 4. 给测试脚本执行权限
chmod +x test_script.sh
部署测试：
bash
# 1. 拷贝文件到开发板
scp sdf_dals_z1.ko test_light_sensor test_script.sh root@192.168.x.x:/root/
# 2. 在开发板上运行完整测试
./test_script.sh
# 3. 手动测试
insmod sdf_dals_z1.ko
./test_light_sensor 我如果想写一个设计一个基于光照强度传感器的I2C设备驱动，通过I2C总线读取光照强度数据，符合Linux Input子系统标准（支持主动数据上报）
（1）使用工作服务器，熟悉编译环境
（2）驱动使用I2C驱动框架
（3）使用设备树
（4）使用I2C通信协议实现传感器寄存器读写操作
（5）使用Input子系统进行光照强度数据上报
（6）使用Workqueue实现定时轮询采集数据（默认采集间隔700ms）
（7）提供sysfs用户空间接口，支持enable/delay/value属性控制
（8）支持日志分级输出，通过sysfs的loglevel属性控制日志级别
（9）支持debug/debugfs查看传感器状态和寄存器
（10）要求画出系统框架和设计图
（11）写一个简单的用户程序作为测试演示使用，通过Input事件读取光照强度数据
光传感器为SDF-DALS-Z1，请帮我在当前打开的项目文件里生成代码及文件夹，需要编写设备数，i2c驱动，makefile和Kconfig，最后在RK5736上进行测试，我需要你告知我编写的过程，从在哪个文件夹怎么创建文件，怎么创建相关的.c .h文件以及怎么依据原理编写我想要实现的功能，怎么编写makefile和Kconfig，请你看一下这个代码是否能实现项目功能
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