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of: unitest: Add I2C overlay unit tests. 

Introduce I2C device tree overlay tests.
Tests insertion and removal of i2c adapters, i2c devices, and muxes.

Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Pantelis Antoniou 2015-01-12 19:02:49 +02:00 committed by Rob Herring
parent 962a70d05e
commit d5e75500ca
3 changed files with 614 additions and 51 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
Documentation/devicetree/bindings/unittest.txt
View File

@ -1,4 +1,4 @@
* OF selftest platform device
1) OF selftest platform device
** selftest
@ -12,3 +12,60 @@ Example:
compatible = "selftest";
status = "okay";
};
2) OF selftest i2c adapter platform device
** platform device unittest adapter
Required properties:
- compatible: must be selftest-i2c-bus
Children nodes contain selftest i2c devices.
Example:
selftest-i2c-bus {
compatible = "selftest-i2c-bus";
status = "okay";
};
3) OF selftest i2c device
** I2C selftest device
Required properties:
- compatible: must be selftest-i2c-dev
All other properties are optional
Example:
selftest-i2c-dev {
compatible = "selftest-i2c-dev";
status = "okay";
};
4) OF selftest i2c mux device
** I2C selftest mux
Required properties:
- compatible: must be selftest-i2c-mux
Children nodes contain selftest i2c bus nodes per channel.
Example:
selftest-i2c-mux {
compatible = "selftest-i2c-mux";
status = "okay";
#address-cells = <1>;
#size-cells = <0>;
channel-0 {
reg = <0>;
#address-cells = <1>;
#size-cells = <0>;
i2c-dev {
reg = <8>;
compatible = "selftest-i2c-dev";
status = "okay";
};
};
};

94
drivers/of/unittest-data/tests-overlay.dtsi
View File

@ -68,6 +68,48 @@
status = "disabled";
reg = <8>;
};
i2c-test-bus {
compatible = "selftest-i2c-bus";
status = "okay";
reg = <50>;
#address-cells = <1>;
#size-cells = <0>;
test-selftest12 {
reg = <8>;
compatible = "selftest-i2c-dev";
status = "disabled";
};
test-selftest13 {
reg = <9>;
compatible = "selftest-i2c-dev";
status = "okay";
};
test-selftest14 {
reg = <10>;
compatible = "selftest-i2c-mux";
status = "okay";
#address-cells = <1>;
#size-cells = <0>;
i2c@0 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0>;
test-mux-dev {
reg = <32>;
compatible = "selftest-i2c-dev";
status = "okay";
};
};
};
};
};
};
@ -231,5 +273,57 @@
};
};
};
/* test enable using absolute target path (i2c) */
overlay12 {
fragment@0 {
target-path = "/testcase-data/overlay-node/test-bus/i2c-test-bus/test-selftest12";
__overlay__ {
status = "okay";
};
};
};
/* test disable using absolute target path (i2c) */
overlay13 {
fragment@0 {
target-path = "/testcase-data/overlay-node/test-bus/i2c-test-bus/test-selftest13";
__overlay__ {
status = "disabled";
};
};
};
/* test mux overlay */
overlay15 {
fragment@0 {
target-path = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
__overlay__ {
#address-cells = <1>;
#size-cells = <0>;
test-selftest15 {
reg = <11>;
compatible = "selftest-i2c-mux";
status = "okay";
#address-cells = <1>;
#size-cells = <0>;
i2c@0 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0>;
test-mux-dev {
reg = <32>;
compatible = "selftest-i2c-dev";
status = "okay";
};
};
};
};
};
};
};
};

512
drivers/of/unittest.c
View File

@ -20,6 +20,9 @@
#include <linux/platform_device.h>
#include <linux/of_platform.h>
#include <linux/i2c.h>
#include <linux/i2c-mux.h>
#include "of_private.h"
static struct selftest_results {
@ -991,17 +994,94 @@ static int of_path_platform_device_exists(const char *path)
return pdev != NULL;
}
static const char *selftest_path(int nr)
#if IS_ENABLED(CONFIG_I2C)
/* get the i2c client device instantiated at the path */
static struct i2c_client *of_path_to_i2c_client(const char *path)
{
struct device_node *np;
struct i2c_client *client;
np = of_find_node_by_path(path);
if (np == NULL)
return NULL;
client = of_find_i2c_device_by_node(np);
of_node_put(np);
return client;
}
/* find out if a i2c client device exists at that path */
static int of_path_i2c_client_exists(const char *path)
{
struct i2c_client *client;
client = of_path_to_i2c_client(path);
if (client)
put_device(&client->dev);
return client != NULL;
}
#else
static int of_path_i2c_client_exists(const char *path)
{
return 0;
}
#endif
enum overlay_type {
PDEV_OVERLAY,
I2C_OVERLAY
};
static int of_path_device_type_exists(const char *path,
enum overlay_type ovtype)
{
switch (ovtype) {
case PDEV_OVERLAY:
return of_path_platform_device_exists(path);
case I2C_OVERLAY:
return of_path_i2c_client_exists(path);
}
return 0;
}
static const char *selftest_path(int nr, enum overlay_type ovtype)
{
const char *base;
static char buf[256];
snprintf(buf, sizeof(buf) - 1,
"/testcase-data/overlay-node/test-bus/test-selftest%d", nr);
switch (ovtype) {
case PDEV_OVERLAY:
base = "/testcase-data/overlay-node/test-bus";
break;
case I2C_OVERLAY:
base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
break;
default:
buf[0] = '\0';
return buf;
}
snprintf(buf, sizeof(buf) - 1, "%s/test-selftest%d", base, nr);
buf[sizeof(buf) - 1] = '\0';
return buf;
}
static int of_selftest_device_exists(int selftest_nr, enum overlay_type ovtype)
{
const char *path;
path = selftest_path(selftest_nr, ovtype);
switch (ovtype) {
case PDEV_OVERLAY:
return of_path_platform_device_exists(path);
case I2C_OVERLAY:
return of_path_i2c_client_exists(path);
}
return 0;
}
static const char *overlay_path(int nr)
{
static char buf[256];
@ -1050,16 +1130,15 @@ out:
/* apply an overlay while checking before and after states */
static int of_selftest_apply_overlay_check(int overlay_nr, int selftest_nr,
int before, int after)
int before, int after, enum overlay_type ovtype)
{
int ret;
/* selftest device must not be in before state */
if (of_path_platform_device_exists(selftest_path(selftest_nr))
!= before) {
if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
overlay_path(overlay_nr),
selftest_path(selftest_nr),
selftest_path(selftest_nr, ovtype),
!before ? "enabled" : "disabled");
return -EINVAL;
}
@ -1071,11 +1150,10 @@ static int of_selftest_apply_overlay_check(int overlay_nr, int selftest_nr,
}
/* selftest device must be to set to after state */
if (of_path_platform_device_exists(selftest_path(selftest_nr))
!= after) {
if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
overlay_path(overlay_nr),
selftest_path(selftest_nr),
selftest_path(selftest_nr, ovtype),
!after ? "enabled" : "disabled");
return -EINVAL;
}
@ -1085,16 +1163,16 @@ static int of_selftest_apply_overlay_check(int overlay_nr, int selftest_nr,
/* apply an overlay and then revert it while checking before, after states */
static int of_selftest_apply_revert_overlay_check(int overlay_nr,
int selftest_nr, int before, int after)
int selftest_nr, int before, int after,
enum overlay_type ovtype)
{
int ret, ov_id;
/* selftest device must be in before state */
if (of_path_platform_device_exists(selftest_path(selftest_nr))
!= before) {
if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
overlay_path(overlay_nr),
selftest_path(selftest_nr),
selftest_path(selftest_nr, ovtype),
!before ? "enabled" : "disabled");
return -EINVAL;
}
@ -1107,11 +1185,10 @@ static int of_selftest_apply_revert_overlay_check(int overlay_nr,
}
/* selftest device must be in after state */
if (of_path_platform_device_exists(selftest_path(selftest_nr))
!= after) {
if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
overlay_path(overlay_nr),
selftest_path(selftest_nr),
selftest_path(selftest_nr, ovtype),
!after ? "enabled" : "disabled");
return -EINVAL;
}
@ -1120,16 +1197,15 @@ static int of_selftest_apply_revert_overlay_check(int overlay_nr,
if (ret != 0) {
selftest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n",
overlay_path(overlay_nr),
selftest_path(selftest_nr));
selftest_path(selftest_nr, ovtype));
return ret;
}
/* selftest device must be again in before state */
if (of_path_platform_device_exists(selftest_path(selftest_nr))
!= before) {
if (of_selftest_device_exists(selftest_nr, PDEV_OVERLAY) != before) {
selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
overlay_path(overlay_nr),
selftest_path(selftest_nr),
selftest_path(selftest_nr, ovtype),
!before ? "enabled" : "disabled");
return -EINVAL;
}
@ -1143,7 +1219,7 @@ static void of_selftest_overlay_0(void)
int ret;
/* device should enable */
ret = of_selftest_apply_overlay_check(0, 0, 0, 1);
ret = of_selftest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
if (ret != 0)
return;
@ -1156,7 +1232,7 @@ static void of_selftest_overlay_1(void)
int ret;
/* device should disable */
ret = of_selftest_apply_overlay_check(1, 1, 1, 0);
ret = of_selftest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
if (ret != 0)
return;
@ -1169,7 +1245,7 @@ static void of_selftest_overlay_2(void)
int ret;
/* device should enable */
ret = of_selftest_apply_overlay_check(2, 2, 0, 1);
ret = of_selftest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
if (ret != 0)
return;
@ -1182,7 +1258,7 @@ static void of_selftest_overlay_3(void)
int ret;
/* device should disable */
ret = of_selftest_apply_overlay_check(3, 3, 1, 0);
ret = of_selftest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
if (ret != 0)
return;
@ -1195,7 +1271,7 @@ static void of_selftest_overlay_4(void)
int ret;
/* device should disable */
ret = of_selftest_apply_overlay_check(4, 4, 0, 1);
ret = of_selftest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY);
if (ret != 0)
return;
@ -1208,7 +1284,7 @@ static void of_selftest_overlay_5(void)
int ret;
/* device should disable */
ret = of_selftest_apply_revert_overlay_check(5, 5, 0, 1);
ret = of_selftest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
if (ret != 0)
return;
@ -1225,12 +1301,12 @@ static void of_selftest_overlay_6(void)
/* selftest device must be in before state */
for (i = 0; i < 2; i++) {
if (of_path_platform_device_exists(
selftest_path(selftest_nr + i))
if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
!= before) {
selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
overlay_path(overlay_nr + i),
selftest_path(selftest_nr + i),
selftest_path(selftest_nr + i,
PDEV_OVERLAY),
!before ? "enabled" : "disabled");
return;
}
@ -1257,12 +1333,12 @@ static void of_selftest_overlay_6(void)
for (i = 0; i < 2; i++) {
/* selftest device must be in after state */
if (of_path_platform_device_exists(
selftest_path(selftest_nr + i))
if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
!= after) {
selftest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
overlay_path(overlay_nr + i),
selftest_path(selftest_nr + i),
selftest_path(selftest_nr + i,
PDEV_OVERLAY),
!after ? "enabled" : "disabled");
return;
}
@ -1273,19 +1349,20 @@ static void of_selftest_overlay_6(void)
if (ret != 0) {
selftest(0, "overlay @\"%s\" failed destroy @\"%s\"\n",
overlay_path(overlay_nr + i),
selftest_path(selftest_nr + i));
selftest_path(selftest_nr + i,
PDEV_OVERLAY));
return;
}
}
for (i = 0; i < 2; i++) {
/* selftest device must be again in before state */
if (of_path_platform_device_exists(
selftest_path(selftest_nr + i))
if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
!= before) {
selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
overlay_path(overlay_nr + i),
selftest_path(selftest_nr + i),
selftest_path(selftest_nr + i,
PDEV_OVERLAY),
!before ? "enabled" : "disabled");
return;
}
@ -1327,7 +1404,8 @@ static void of_selftest_overlay_8(void)
if (ret == 0) {
selftest(0, "overlay @\"%s\" was destroyed @\"%s\"\n",
overlay_path(overlay_nr + 0),
selftest_path(selftest_nr));
selftest_path(selftest_nr,
PDEV_OVERLAY));
return;
}
@ -1337,7 +1415,8 @@ static void of_selftest_overlay_8(void)
if (ret != 0) {
selftest(0, "overlay @\"%s\" not destroyed @\"%s\"\n",
overlay_path(overlay_nr + i),
selftest_path(selftest_nr));
selftest_path(selftest_nr,
PDEV_OVERLAY));
return;
}
}
@ -1352,16 +1431,17 @@ static void of_selftest_overlay_10(void)
char *child_path;
/* device should disable */
ret = of_selftest_apply_overlay_check(10, 10, 0, 1);
if (selftest(ret == 0, "overlay test %d failed; overlay application\n", 10))
ret = of_selftest_apply_overlay_check(10, 10, 0, 1, PDEV_OVERLAY);
if (selftest(ret == 0,
"overlay test %d failed; overlay application\n", 10))
return;
child_path = kasprintf(GFP_KERNEL, "%s/test-selftest101",
selftest_path(10));
selftest_path(10, PDEV_OVERLAY));
if (selftest(child_path, "overlay test %d failed; kasprintf\n", 10))
return;
ret = of_path_platform_device_exists(child_path);
ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
kfree(child_path);
if (selftest(ret, "overlay test %d failed; no child device\n", 10))
return;
@ -1373,11 +1453,331 @@ static void of_selftest_overlay_11(void)
int ret;
/* device should disable */
ret = of_selftest_apply_revert_overlay_check(11, 11, 0, 1);
if (selftest(ret == 0, "overlay test %d failed; overlay application\n", 11))
ret = of_selftest_apply_revert_overlay_check(11, 11, 0, 1,
PDEV_OVERLAY);
if (selftest(ret == 0,
"overlay test %d failed; overlay application\n", 11))
return;
}
#if IS_ENABLED(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
struct selftest_i2c_bus_data {
struct platform_device *pdev;
struct i2c_adapter adap;
};
static int selftest_i2c_master_xfer(struct i2c_adapter *adap,
struct i2c_msg *msgs, int num)
{
struct selftest_i2c_bus_data *std = i2c_get_adapdata(adap);
(void)std;
return num;
}
static u32 selftest_i2c_functionality(struct i2c_adapter *adap)
{
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
}
static const struct i2c_algorithm selftest_i2c_algo = {
.master_xfer = selftest_i2c_master_xfer,
.functionality = selftest_i2c_functionality,
};
static int selftest_i2c_bus_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct selftest_i2c_bus_data *std;
struct i2c_adapter *adap;
int ret;
if (np == NULL) {
dev_err(dev, "No OF data for device\n");
return -EINVAL;
}
dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
std = devm_kzalloc(dev, sizeof(*std), GFP_KERNEL);
if (!std) {
dev_err(dev, "Failed to allocate selftest i2c data\n");
return -ENOMEM;
}
/* link them together */
std->pdev = pdev;
platform_set_drvdata(pdev, std);
adap = &std->adap;
i2c_set_adapdata(adap, std);
adap->nr = -1;
strlcpy(adap->name, pdev->name, sizeof(adap->name));
adap->class = I2C_CLASS_DEPRECATED;
adap->algo = &selftest_i2c_algo;
adap->dev.parent = dev;
adap->dev.of_node = dev->of_node;
adap->timeout = 5 * HZ;
adap->retries = 3;
ret = i2c_add_numbered_adapter(adap);
if (ret != 0) {
dev_err(dev, "Failed to add I2C adapter\n");
return ret;
}
return 0;
}
static int selftest_i2c_bus_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct selftest_i2c_bus_data *std = platform_get_drvdata(pdev);
dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
i2c_del_adapter(&std->adap);
return 0;
}
static struct of_device_id selftest_i2c_bus_match[] = {
{ .compatible = "selftest-i2c-bus", },
{},
};
static struct platform_driver selftest_i2c_bus_driver = {
.probe = selftest_i2c_bus_probe,
.remove = selftest_i2c_bus_remove,
.driver = {
.name = "selftest-i2c-bus",
.of_match_table = of_match_ptr(selftest_i2c_bus_match),
},
};
static int selftest_i2c_dev_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct device_node *np = client->dev.of_node;
if (!np) {
dev_err(dev, "No OF node\n");
return -EINVAL;
}
dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
return 0;
};
static int selftest_i2c_dev_remove(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct device_node *np = client->dev.of_node;
dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
return 0;
}
static const struct i2c_device_id selftest_i2c_dev_id[] = {
{ .name = "selftest-i2c-dev" },
{ }
};
static struct i2c_driver selftest_i2c_dev_driver = {
.driver = {
.name = "selftest-i2c-dev",
.owner = THIS_MODULE,
},
.probe = selftest_i2c_dev_probe,
.remove = selftest_i2c_dev_remove,
.id_table = selftest_i2c_dev_id,
};
#if IS_ENABLED(CONFIG_I2C_MUX)
struct selftest_i2c_mux_data {
int nchans;
struct i2c_adapter *adap[];
};
static int selftest_i2c_mux_select_chan(struct i2c_adapter *adap,
void *client, u32 chan)
{
return 0;
}
static int selftest_i2c_mux_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int ret, i, nchans, size;
struct device *dev = &client->dev;
struct i2c_adapter *adap = to_i2c_adapter(dev->parent);
struct device_node *np = client->dev.of_node, *child;
struct selftest_i2c_mux_data *stm;
u32 reg, max_reg;
dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
if (!np) {
dev_err(dev, "No OF node\n");
return -EINVAL;
}
max_reg = (u32)-1;
for_each_child_of_node(np, child) {
ret = of_property_read_u32(child, "reg", &reg);
if (ret)
continue;
if (max_reg == (u32)-1 || reg > max_reg)
max_reg = reg;
}
nchans = max_reg == (u32)-1 ? 0 : max_reg + 1;
if (nchans == 0) {
dev_err(dev, "No channels\n");
return -EINVAL;
}
size = offsetof(struct selftest_i2c_mux_data, adap[nchans]);
stm = devm_kzalloc(dev, size, GFP_KERNEL);
if (!stm) {
dev_err(dev, "Out of memory\n");
return -ENOMEM;
}
stm->nchans = nchans;
for (i = 0; i < nchans; i++) {
stm->adap[i] = i2c_add_mux_adapter(adap, dev, client,
0, i, 0, selftest_i2c_mux_select_chan, NULL);
if (!stm->adap[i]) {
dev_err(dev, "Failed to register mux #%d\n", i);
for (i--; i >= 0; i--)
i2c_del_mux_adapter(stm->adap[i]);
return -ENODEV;
}
}
i2c_set_clientdata(client, stm);
return 0;
};
static int selftest_i2c_mux_remove(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct device_node *np = client->dev.of_node;
struct selftest_i2c_mux_data *stm = i2c_get_clientdata(client);
int i;
dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
for (i = stm->nchans - 1; i >= 0; i--)
i2c_del_mux_adapter(stm->adap[i]);
return 0;
}
static const struct i2c_device_id selftest_i2c_mux_id[] = {
{ .name = "selftest-i2c-mux" },
{ }
};
static struct i2c_driver selftest_i2c_mux_driver = {
.driver = {
.name = "selftest-i2c-mux",
.owner = THIS_MODULE,
},
.probe = selftest_i2c_mux_probe,
.remove = selftest_i2c_mux_remove,
.id_table = selftest_i2c_mux_id,
};
#endif
static int of_selftest_overlay_i2c_init(void)
{
int ret;
ret = i2c_add_driver(&selftest_i2c_dev_driver);
if (selftest(ret == 0,
"could not register selftest i2c device driver\n"))
return ret;
ret = platform_driver_register(&selftest_i2c_bus_driver);
if (selftest(ret == 0,
"could not register selftest i2c bus driver\n"))
return ret;
#if IS_ENABLED(CONFIG_I2C_MUX)
ret = i2c_add_driver(&selftest_i2c_mux_driver);
if (selftest(ret == 0,
"could not register selftest i2c mux driver\n"))
return ret;
#endif
return 0;
}
static void of_selftest_overlay_i2c_cleanup(void)
{
#if IS_ENABLED(CONFIG_I2C_MUX)
i2c_del_driver(&selftest_i2c_mux_driver);
#endif
platform_driver_unregister(&selftest_i2c_bus_driver);
i2c_del_driver(&selftest_i2c_dev_driver);
}
static void of_selftest_overlay_i2c_12(void)
{
int ret;
/* device should enable */
ret = of_selftest_apply_overlay_check(12, 12, 0, 1, I2C_OVERLAY);
if (ret != 0)
return;
selftest(1, "overlay test %d passed\n", 12);
}
/* test deactivation of device */
static void of_selftest_overlay_i2c_13(void)
{
int ret;
/* device should disable */
ret = of_selftest_apply_overlay_check(13, 13, 1, 0, I2C_OVERLAY);
if (ret != 0)
return;
selftest(1, "overlay test %d passed\n", 13);
}
/* just check for i2c mux existence */
static void of_selftest_overlay_i2c_14(void)
{
}
static void of_selftest_overlay_i2c_15(void)
{
int ret;
/* device should enable */
ret = of_selftest_apply_overlay_check(16, 15, 0, 1, I2C_OVERLAY);
if (ret != 0)
return;
selftest(1, "overlay test %d passed\n", 15);
}
#else
static inline void of_selftest_overlay_i2c_14(void) { }
static inline void of_selftest_overlay_i2c_15(void) { }
#endif
static void __init of_selftest_overlay(void)
{
struct device_node *bus_np = NULL;
@ -1402,15 +1802,15 @@ static void __init of_selftest_overlay(void)
goto out;
}
if (!of_path_platform_device_exists(selftest_path(100))) {
if (!of_selftest_device_exists(100, PDEV_OVERLAY)) {
selftest(0, "could not find selftest0 @ \"%s\"\n",
selftest_path(100));
selftest_path(100, PDEV_OVERLAY));
goto out;
}
if (of_path_platform_device_exists(selftest_path(101))) {
if (of_selftest_device_exists(101, PDEV_OVERLAY)) {
selftest(0, "selftest1 @ \"%s\" should not exist\n",
selftest_path(101));
selftest_path(101, PDEV_OVERLAY));
goto out;
}
@ -1429,6 +1829,18 @@ static void __init of_selftest_overlay(void)
of_selftest_overlay_10();
of_selftest_overlay_11();
#if IS_ENABLED(CONFIG_I2C)
if (selftest(of_selftest_overlay_i2c_init() == 0, "i2c init failed\n"))
goto out;
of_selftest_overlay_i2c_12();
of_selftest_overlay_i2c_13();
of_selftest_overlay_i2c_14();
of_selftest_overlay_i2c_15();
of_selftest_overlay_i2c_cleanup();
#endif
out:
of_node_put(bus_np);
}