test_driver_init.c File Reference

#include <zephyr/kernel.h>
#include <zephyr/device.h>
#include <zephyr/init.h>
#include <zephyr/ztest.h>
#include <zephyr/linker/sections.h>

Data Structures
struct	my_driver_api

Macros
#define	MY_DRIVER_LV_1   "my_driver_level_1"
	Test cases to device driver initialization.
#define	MY_DRIVER_LV_2   "my_driver_level_2"
#define	MY_DRIVER_LV_3   "my_driver_level_3"
#define	MY_DRIVER_PRI_1   "my_driver_priority_1"
#define	MY_DRIVER_PRI_2   "my_driver_priority_2"
#define	MY_DRIVER_PRI_3   "my_driver_priority_3"
#define	MY_DRIVER_PRI_4   "my_driver_priority_4"
#define	LEVEL_PRE_KERNEL_1   1
#define	LEVEL_PRE_KERNEL_2   2
#define	LEVEL_POST_KERNEL   3
#define	PRIORITY_1   1
#define	PRIORITY_2   2
#define	PRIORITY_3   3
#define	PRIORITY_4   4

Typedefs
typedef int(*	my_api_configure_t) (const struct device *dev, int dev_config)

Functions
static int	my_configure (const struct device *dev, int config)
static __pinned_func int	my_driver_lv_1_init (const struct device *dev)
static __pinned_func int	my_driver_lv_2_init (const struct device *dev)
static int	my_driver_lv_3_init (const struct device *dev)
static int	my_driver_pri_1_init (const struct device *dev)
static int	my_driver_pri_2_init (const struct device *dev)
static int	my_driver_pri_3_init (const struct device *dev)
static int	my_driver_pri_4_init (const struct device *dev)
static int	my_driver_sub_pri_0_init (const struct device *dev)
static int	my_driver_sub_pri_1_init (const struct device *dev)
static int	my_driver_sub_pri_2_init (const struct device *dev)
	DEVICE_DT_DEFINE (DT_NODELABEL(fakedomain_0), my_driver_sub_pri_0_init, NULL, NULL, NULL, POST_KERNEL, 33, NULL)
	Test providing control device driver initialization order.
	DEVICE_DT_DEFINE (DT_NODELABEL(fakedomain_1), my_driver_sub_pri_1_init, NULL, NULL, NULL, POST_KERNEL, 33, NULL)
	DEVICE_DT_DEFINE (DT_NODELABEL(fakedomain_2), my_driver_sub_pri_2_init, NULL, NULL, NULL, POST_KERNEL, 33, NULL)

Variables
__pinned_bss int	init_level_sequence [3] = {0}
__pinned_bss int	init_priority_sequence [4] = {0}
__pinned_bss int	init_sub_priority_sequence [3] = {0}
__pinned_bss unsigned int	seq_level_cnt
__pinned_bss unsigned int	seq_priority_cnt
__pinned_bss unsigned int	seq_sub_priority_cnt
static const struct my_driver_api	funcs_my_drivers

Macro Definition Documentation

LEVEL_POST_KERNEL

#define LEVEL_POST_KERNEL   3

LEVEL_PRE_KERNEL_1

#define LEVEL_PRE_KERNEL_1   1

LEVEL_PRE_KERNEL_2

#define LEVEL_PRE_KERNEL_2   2

MY_DRIVER_LV_1

#define MY_DRIVER_LV_1   "my_driver_level_1"

Test cases to device driver initialization.

MY_DRIVER_LV_2

#define MY_DRIVER_LV_2   "my_driver_level_2"

MY_DRIVER_LV_3

#define MY_DRIVER_LV_3   "my_driver_level_3"

MY_DRIVER_PRI_1

#define MY_DRIVER_PRI_1   "my_driver_priority_1"

MY_DRIVER_PRI_2

#define MY_DRIVER_PRI_2   "my_driver_priority_2"

MY_DRIVER_PRI_3

#define MY_DRIVER_PRI_3   "my_driver_priority_3"

MY_DRIVER_PRI_4

#define MY_DRIVER_PRI_4   "my_driver_priority_4"

PRIORITY_1

#define PRIORITY_1   1

PRIORITY_2

#define PRIORITY_2   2

PRIORITY_3

#define PRIORITY_3   3

PRIORITY_4

#define PRIORITY_4   4

Typedef Documentation

my_api_configure_t

typedef int(* my_api_configure_t) (const struct device *dev, int dev_config)

Function Documentation

DEVICE_DT_DEFINE() [1/3]

DEVICE_DT_DEFINE	(	DT_NODELABEL(fakedomain_0)	,
		my_driver_sub_pri_0_init	,
		NULL	,
		NULL	,
		NULL	,
		POST_KERNEL	,
		33	,
		NULL
	)

Test providing control device driver initialization order.

Test that kernel shall provide control over device driver initialization order, using initialization level and priority for each instance. We use DEVICE_DEFINE to define device instances and set it's level and priority here, then we run check function later after all of this instance finish their initialization.

DEVICE_DT_DEFINE() [2/3]

DEVICE_DT_DEFINE	(	DT_NODELABEL(fakedomain_1)	,
		my_driver_sub_pri_1_init	,
		NULL	,
		NULL	,
		NULL	,
		POST_KERNEL	,
		33	,
		NULL
	)

DEVICE_DT_DEFINE() [3/3]

DEVICE_DT_DEFINE	(	DT_NODELABEL(fakedomain_2)	,
		my_driver_sub_pri_2_init	,
		NULL	,
		NULL	,
		NULL	,
		POST_KERNEL	,
		33	,
		NULL
	)

my_configure()

static int my_configure ( const struct device *  dev, int  config  )

static

my_driver_lv_1_init()

static __pinned_func int my_driver_lv_1_init ( const struct device *  dev )

static

my_driver_lv_2_init()

static __pinned_func int my_driver_lv_2_init ( const struct device *  dev )

static

my_driver_lv_3_init()

static int my_driver_lv_3_init ( const struct device *  dev )

static

my_driver_pri_1_init()

static int my_driver_pri_1_init ( const struct device *  dev )

static

my_driver_pri_2_init()

static int my_driver_pri_2_init ( const struct device *  dev )

static

my_driver_pri_3_init()

static int my_driver_pri_3_init ( const struct device *  dev )

static

my_driver_pri_4_init()

static int my_driver_pri_4_init ( const struct device *  dev )

static

my_driver_sub_pri_0_init()

static int my_driver_sub_pri_0_init ( const struct device *  dev )

static

my_driver_sub_pri_1_init()

static int my_driver_sub_pri_1_init ( const struct device *  dev )

static

my_driver_sub_pri_2_init()

static int my_driver_sub_pri_2_init ( const struct device *  dev )

static

Variable Documentation

funcs_my_drivers

const struct my_driver_api funcs_my_drivers

static

Initial value:

= {
        .configure = my_configure,
}

seq_sub_priority_cnt

__pinned_bss unsigned int seq_sub_priority_cnt