The demo driver complies with s3ip sysfs specification,which use the …

platform/s3ip-sysfs/demo_driver/cpld_device_driver.c

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+/*
+ * cpld_device_driver.c
+ *
+ * This module realize /sys/s3ip/cpld attributes read and write functions
+ *
+ * History
+ *  [Version]                [Date]                    [Description]
+ *   *  v1.0                2021-08-31                  S3IP sysfs
+ */
+
+#include <linux/slab.h>
+
+#include "device_driver_common.h"
+#include "cpld_sysfs.h"
+
+#define CPLD_INFO(fmt, args...) LOG_INFO("cpld: ", fmt, ##args)
+#define CPLD_ERR(fmt, args...)  LOG_ERR("cpld: ", fmt, ##args)
+#define CPLD_DBG(fmt, args...)  LOG_DBG("cpld: ", fmt, ##args)
+
+static int g_loglevel = 0;
+
+/******************************************CPLD***********************************************/
+static int demo_get_main_board_cpld_number(void)
+{
+    /* add vendor codes here */
+    return 1;
+}
+
+/*
+ * demo_get_main_board_cpld_alias - Used to identify the location of cpld,
+ * @cpld_index: start with 1
+ * @buf: Data receiving buffer
+ * @count: length of buf
+ *
+ * This function returns the length of the filled buffer,
+ * if not support this attributes filled "NA" to buf,
+ * otherwise it returns a negative value on failed.
+ */
+static ssize_t demo_get_main_board_cpld_alias(unsigned int cpld_index, char *buf, size_t count)
+{
+    /* add vendor codes here */
+    return -ENOSYS;
+}
+
+/*
+ * demo_get_main_board_cpld_type - Used to get cpld model name
+ * @cpld_index: start with 1
+ * @buf: Data receiving buffer
+ * @count: length of buf
+ *
+ * This function returns the length of the filled buffer,
+ * if not support this attributes filled "NA" to buf,
+ * otherwise it returns a negative value on failed.
+ */
+static ssize_t demo_get_main_board_cpld_type(unsigned int cpld_index, char *buf, size_t count)
+{
+    /* add vendor codes here */
+    return -ENOSYS;
+}
+
+/*
+ * demo_get_main_board_cpld_firmware_version - Used to get cpld firmware version,
+ * @cpld_index: start with 1
+ * @buf: Data receiving buffer
+ * @count: length of buf
+ *
+ * This function returns the length of the filled buffer,
+ * if not support this attributes filled "NA" to buf,
+ * otherwise it returns a negative value on failed.
+ */
+static ssize_t demo_get_main_board_cpld_firmware_version(unsigned int cpld_index, char *buf, size_t count)
+{
+    /* add vendor codes here */
+    return -ENOSYS;
+}
+
+/*
+ * demo_get_main_board_cpld_board_version - Used to get cpld board version,
+ * @cpld_index: start with 1
+ * @buf: Data receiving buffer
+ * @count: length of buf
+ *
+ * This function returns the length of the filled buffer,
+ * if not support this attributes filled "NA" to buf,
+ * otherwise it returns a negative value on failed.
+ */
+static ssize_t demo_get_main_board_cpld_board_version(unsigned int cpld_index, char *buf, size_t count)
+{
+    /* add vendor codes here */
+    return -ENOSYS;
+}
+
+/*
+ * demo_get_main_board_cpld_test_reg - Used to test cpld register read
+ * filled the value to buf, value is hexadecimal, start with 0x
+ * @cpld_index: start with 1
+ * @buf: Data receiving buffer
+ * @count: length of buf
+ *
+ * This function returns the length of the filled buffer,
+ * if not support this attributes filled "NA" to buf,
+ * otherwise it returns a negative value on failed.
+ */
+static ssize_t demo_get_main_board_cpld_test_reg(unsigned int cpld_index, char *buf, size_t count)
+{
+    /* add vendor codes here */
+    return -ENOSYS;
+}
+
+/*
+ * demo_set_main_board_cpld_test_reg - Used to test cpld register write
+ * @cpld_index: start with 1
+ * @value: value write to cpld
+ *
+ * This function returns 0 on success,
+ * otherwise it returns a negative value on failed.
+ */
+static int demo_set_main_board_cpld_test_reg(unsigned int cpld_index, unsigned int value)
+{
+    /* add vendor codes here */
+    return -ENOSYS;
+}
+/***************************************end of CPLD*******************************************/
+
+static struct s3ip_sysfs_cpld_drivers_s drivers = {
+    /*
+     * set ODM CPLD drivers to /sys/s3ip/cpld,
+     * if not support the function, set corresponding hook to NULL.
+     */
+    .get_main_board_cpld_number = demo_get_main_board_cpld_number,
+    .get_main_board_cpld_alias = demo_get_main_board_cpld_alias,
+    .get_main_board_cpld_type = demo_get_main_board_cpld_type,
+    .get_main_board_cpld_firmware_version = demo_get_main_board_cpld_firmware_version,
+    .get_main_board_cpld_board_version = demo_get_main_board_cpld_board_version,
+    .get_main_board_cpld_test_reg = demo_get_main_board_cpld_test_reg,
+    .set_main_board_cpld_test_reg = demo_set_main_board_cpld_test_reg,
+};
+
+static int __init cpld_device_driver_init(void)
+{
+    int ret;
+
+    CPLD_INFO("cpld_init...\n");
+
+    ret = s3ip_sysfs_cpld_drivers_register(&drivers);
+    if (ret < 0) {
+        CPLD_ERR("cpld drivers register err, ret %d.\n", ret);
+        return ret;
+    }
+
+    CPLD_INFO("cpld_init success.\n");
+    return 0;
+}
+
+static void __exit cpld_device_driver_exit(void)
+{
+    s3ip_sysfs_cpld_drivers_unregister();
+    CPLD_INFO("cpld_exit success.\n");
+    return;
+}
+
+module_init(cpld_device_driver_init);
+module_exit(cpld_device_driver_exit);
+module_param(g_loglevel, int, 0644);
+MODULE_PARM_DESC(g_loglevel, "the log level(info=0x1, err=0x2, dbg=0x4, all=0xf).\n");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("sonic S3IP sysfs");
+MODULE_DESCRIPTION("cpld device driver");

platform/s3ip-sysfs/demo_driver/curr_sensor_device_driver.c

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+/*
+ * curr_sensor_device_driver.c
+ *
+ * This module realize /sys/s3ip/curr_sensor attributes read and write functions
+ *
+ * History
+ *  [Version]                [Date]                    [Description]
+ *   *  v1.0                2021-08-31                  S3IP sysfs
+ */
+
+#include <linux/slab.h>
+
+#include "device_driver_common.h"
+#include "curr_sensor_sysfs.h"
+
+#define CURR_SENSOR_INFO(fmt, args...) LOG_INFO("curr_sensor: ", fmt, ##args)
+#define CURR_SENSOR_ERR(fmt, args...)  LOG_ERR("curr_sensor: ", fmt, ##args)
+#define CURR_SENSOR_DBG(fmt, args...)  LOG_DBG("curr_sensor: ", fmt, ##args)
+
+static int g_loglevel = 0;
+
+/*************************************main board current***************************************/
+static int demo_get_main_board_curr_number(void)
+{
+    /* add vendor codes here */
+    return 1;
+}
+
+/*
+ * demo_get_main_board_curr_alias - Used to identify the location of the current sensor,
+ * @curr_index: start with 1
+ * @buf: Data receiving buffer
+ * @count: length of buf
+ *
+ * This function returns the length of the filled buffer,
+ * if not support this attributes filled "NA" to buf,
+ * otherwise it returns a negative value on failed.
+ */
+static ssize_t demo_get_main_board_curr_alias(unsigned int curr_index, char *buf, size_t count)
+{
+    /* add vendor codes here */
+    return -ENOSYS;
+}
+
+/*
+ * demo_get_main_board_curr_type - Used to get the model of current sensor,
+ * @curr_index: start with 1
+ * @buf: Data receiving buffer
+ * @count: length of buf
+ *
+ * This function returns the length of the filled buffer,
+ * if not support this attributes filled "NA" to buf,
+ * otherwise it returns a negative value on failed.
+ */
+static ssize_t demo_get_main_board_curr_type(unsigned int curr_index, char *buf, size_t count)
+{
+    /* add vendor codes here */
+    return -ENOSYS;
+}
+
+/*
+ * demo_get_main_board_curr_max - Used to get the maximum threshold of current sensor
+ * filled the value to buf, and the value keep three decimal places
+ * @curr_index: start with 1
+ * @buf: Data receiving buffer
+ * @count: length of buf
+ *
+ * This function returns the length of the filled buffer,
+ * if not support this attributes filled "NA" to buf,
+ * otherwise it returns a negative value on failed.
+ */
+static ssize_t demo_get_main_board_curr_max(unsigned int curr_index, char *buf, size_t count)
+{
+    /* add vendor codes here */
+    return -ENOSYS;
+}
+
+/*
+ * demo_set_main_board_curr_max - Used to set the maximum threshold of current sensor
+ * get value from buf and set it to maximum threshold of current sensor
+ * @curr_index: start with 1
+ * @buf: the buf store the data to be set
+ * @count: length of buf
+ *
+ * This function returns 0 on success,
+ * otherwise it returns a negative value on failed.
+ */
+static int demo_set_main_board_curr_max(unsigned int curr_index, const char *buf, size_t count)
+{
+    /* add vendor codes here */
+    return -ENOSYS;
+}
+
+/*
+ * demo_get_main_board_curr_min - Used to get the minimum threshold of current sensor
+ * filled the value to buf, and the value keep three decimal places
+ * @curr_index: start with 1
+ * @buf: Data receiving buffer
+ * @count: length of buf
+ *
+ * This function returns the length of the filled buffer,
+ * if not support this attributes filled "NA" to buf,
+ * otherwise it returns a negative value on failed.
+ */
+static ssize_t demo_get_main_board_curr_min(unsigned int curr_index, char *buf, size_t count)
+{
+    /* add vendor codes here */
+    return -ENOSYS;
+}
+
+/*
+ * demo_set_main_board_curr_min - Used to set the minimum threshold of current sensor
+ * get value from buf and set it to minimum threshold of current sensor
+ * @curr_index: start with 1
+ * @buf: the buf store the data to be set, eg '50.000'
+ * @count: length of buf
+ *
+ * This function returns 0 on success,
+ * otherwise it returns a negative value on failed.
+ */
+static int demo_set_main_board_curr_min(unsigned int curr_index, const char *buf, size_t count)
+{
+    /* add vendor codes here */
+    return -ENOSYS;
+}
+
+/*
+ * demo_get_main_board_curr_value - Used to get the input value of current sensor
+ * filled the value to buf, and the value keep three decimal places
+ * @curr_index: start with 1
+ * @buf: Data receiving buffer
+ * @count: length of buf
+ *
+ * This function returns the length of the filled buffer,
+ * otherwise it returns a negative value on failed.
+ */
+static ssize_t demo_get_main_board_curr_value(unsigned int curr_index, char *buf, size_t count)
+{
+    /* add vendor codes here */
+    return -ENOSYS;
+}
+/*********************************end of main board current************************************/
+
+static struct s3ip_sysfs_curr_sensor_drivers_s drivers = {
+    /*
+     * set ODM current sensor drivers to /sys/s3ip/curr_sensor,
+     * if not support the function, set corresponding hook to NULL.
+     */
+    .get_main_board_curr_number = demo_get_main_board_curr_number,
+    .get_main_board_curr_alias = demo_get_main_board_curr_alias,
+    .get_main_board_curr_type = demo_get_main_board_curr_type,
+    .get_main_board_curr_max = demo_get_main_board_curr_max,
+    .set_main_board_curr_max = demo_set_main_board_curr_max,
+    .get_main_board_curr_min = demo_get_main_board_curr_min,
+    .set_main_board_curr_min = demo_set_main_board_curr_min,
+    .get_main_board_curr_value = demo_get_main_board_curr_value,
+};
+
+static int __init curr_sensor_dev_drv_init(void)
+{
+    int ret;
+
+    CURR_SENSOR_INFO("curr_sensor_init...\n");
+
+    ret = s3ip_sysfs_curr_sensor_drivers_register(&drivers);
+    if (ret < 0) {
+        CURR_SENSOR_ERR("curr sensor drivers register err, ret %d.\n", ret);
+        return ret;
+    }
+
+    CURR_SENSOR_INFO("curr_sensor_init success.\n");
+    return 0;
+}
+
+static void __exit curr_sensor_dev_drv_exit(void)
+{
+    s3ip_sysfs_curr_sensor_drivers_unregister();
+    CURR_SENSOR_INFO("curr_sensor_exit success.\n");
+    return;
+}
+
+module_init(curr_sensor_dev_drv_init);
+module_exit(curr_sensor_dev_drv_exit);
+module_param(g_loglevel, int, 0644);
+MODULE_PARM_DESC(g_loglevel, "the log level(info=0x1, err=0x2, dbg=0x4, all=0xf).\n");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("sonic S3IP sysfs");
+MODULE_DESCRIPTION("current sensors device driver");