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
Rob Herring
Родитель
962a70d05e
Коммит
d5e75500ca
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@ -1,4 +1,4 @@
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* OF selftest platform device
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1) OF selftest platform device
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** selftest
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@ -12,3 +12,60 @@ Example:
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compatible = "selftest";
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status = "okay";
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};
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2) OF selftest i2c adapter platform device
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** platform device unittest adapter
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Required properties:
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- compatible: must be selftest-i2c-bus
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Children nodes contain selftest i2c devices.
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Example:
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selftest-i2c-bus {
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compatible = "selftest-i2c-bus";
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status = "okay";
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};
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3) OF selftest i2c device
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** I2C selftest device
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Required properties:
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- compatible: must be selftest-i2c-dev
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All other properties are optional
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Example:
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selftest-i2c-dev {
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compatible = "selftest-i2c-dev";
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status = "okay";
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};
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4) OF selftest i2c mux device
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** I2C selftest mux
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Required properties:
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- compatible: must be selftest-i2c-mux
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Children nodes contain selftest i2c bus nodes per channel.
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Example:
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selftest-i2c-mux {
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compatible = "selftest-i2c-mux";
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status = "okay";
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#address-cells = <1>;
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#size-cells = <0>;
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channel-0 {
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reg = <0>;
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#address-cells = <1>;
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#size-cells = <0>;
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i2c-dev {
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reg = <8>;
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compatible = "selftest-i2c-dev";
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status = "okay";
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};
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};
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};
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@ -68,6 +68,48 @@
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status = "disabled";
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reg = <8>;
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};
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i2c-test-bus {
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compatible = "selftest-i2c-bus";
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status = "okay";
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reg = <50>;
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#address-cells = <1>;
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#size-cells = <0>;
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test-selftest12 {
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reg = <8>;
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compatible = "selftest-i2c-dev";
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status = "disabled";
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};
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test-selftest13 {
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reg = <9>;
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compatible = "selftest-i2c-dev";
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status = "okay";
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};
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test-selftest14 {
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reg = <10>;
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compatible = "selftest-i2c-mux";
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status = "okay";
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#address-cells = <1>;
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#size-cells = <0>;
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i2c@0 {
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0>;
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test-mux-dev {
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reg = <32>;
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compatible = "selftest-i2c-dev";
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status = "okay";
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};
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};
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};
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};
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};
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};
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@ -231,5 +273,57 @@
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};
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};
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};
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/* test enable using absolute target path (i2c) */
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overlay12 {
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fragment@0 {
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target-path = "/testcase-data/overlay-node/test-bus/i2c-test-bus/test-selftest12";
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__overlay__ {
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status = "okay";
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};
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};
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};
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/* test disable using absolute target path (i2c) */
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overlay13 {
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fragment@0 {
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target-path = "/testcase-data/overlay-node/test-bus/i2c-test-bus/test-selftest13";
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__overlay__ {
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status = "disabled";
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};
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};
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};
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/* test mux overlay */
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overlay15 {
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fragment@0 {
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target-path = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
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__overlay__ {
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#address-cells = <1>;
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#size-cells = <0>;
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test-selftest15 {
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reg = <11>;
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compatible = "selftest-i2c-mux";
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status = "okay";
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#address-cells = <1>;
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#size-cells = <0>;
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i2c@0 {
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0>;
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test-mux-dev {
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reg = <32>;
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compatible = "selftest-i2c-dev";
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status = "okay";
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};
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};
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};
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};
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};
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};
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};
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};
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@ -20,6 +20,9 @@
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#include <linux/platform_device.h>
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#include <linux/of_platform.h>
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#include <linux/i2c.h>
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#include <linux/i2c-mux.h>
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#include "of_private.h"
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static struct selftest_results {
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@ -991,17 +994,94 @@ static int of_path_platform_device_exists(const char *path)
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return pdev != NULL;
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}
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static const char *selftest_path(int nr)
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#if IS_ENABLED(CONFIG_I2C)
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/* get the i2c client device instantiated at the path */
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static struct i2c_client *of_path_to_i2c_client(const char *path)
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{
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struct device_node *np;
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struct i2c_client *client;
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np = of_find_node_by_path(path);
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if (np == NULL)
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return NULL;
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client = of_find_i2c_device_by_node(np);
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of_node_put(np);
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return client;
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}
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/* find out if a i2c client device exists at that path */
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static int of_path_i2c_client_exists(const char *path)
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{
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struct i2c_client *client;
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client = of_path_to_i2c_client(path);
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if (client)
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put_device(&client->dev);
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return client != NULL;
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}
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#else
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static int of_path_i2c_client_exists(const char *path)
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{
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return 0;
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}
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#endif
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enum overlay_type {
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PDEV_OVERLAY,
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I2C_OVERLAY
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};
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static int of_path_device_type_exists(const char *path,
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enum overlay_type ovtype)
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{
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switch (ovtype) {
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case PDEV_OVERLAY:
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return of_path_platform_device_exists(path);
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case I2C_OVERLAY:
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return of_path_i2c_client_exists(path);
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}
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return 0;
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}
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static const char *selftest_path(int nr, enum overlay_type ovtype)
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{
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const char *base;
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static char buf[256];
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snprintf(buf, sizeof(buf) - 1,
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"/testcase-data/overlay-node/test-bus/test-selftest%d", nr);
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switch (ovtype) {
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case PDEV_OVERLAY:
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base = "/testcase-data/overlay-node/test-bus";
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break;
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case I2C_OVERLAY:
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base = "/testcase-data/overlay-node/test-bus/i2c-test-bus";
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break;
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default:
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buf[0] = '\0';
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return buf;
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}
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snprintf(buf, sizeof(buf) - 1, "%s/test-selftest%d", base, nr);
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buf[sizeof(buf) - 1] = '\0';
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return buf;
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}
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static int of_selftest_device_exists(int selftest_nr, enum overlay_type ovtype)
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{
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const char *path;
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path = selftest_path(selftest_nr, ovtype);
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switch (ovtype) {
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case PDEV_OVERLAY:
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return of_path_platform_device_exists(path);
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case I2C_OVERLAY:
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return of_path_i2c_client_exists(path);
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}
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return 0;
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}
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static const char *overlay_path(int nr)
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{
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static char buf[256];
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@ -1050,16 +1130,15 @@ out:
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/* apply an overlay while checking before and after states */
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static int of_selftest_apply_overlay_check(int overlay_nr, int selftest_nr,
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int before, int after)
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int before, int after, enum overlay_type ovtype)
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{
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int ret;
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/* selftest device must not be in before state */
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if (of_path_platform_device_exists(selftest_path(selftest_nr))
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!= before) {
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if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
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selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
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overlay_path(overlay_nr),
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selftest_path(selftest_nr),
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selftest_path(selftest_nr, ovtype),
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!before ? "enabled" : "disabled");
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return -EINVAL;
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}
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@ -1071,11 +1150,10 @@ static int of_selftest_apply_overlay_check(int overlay_nr, int selftest_nr,
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}
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/* selftest device must be to set to after state */
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if (of_path_platform_device_exists(selftest_path(selftest_nr))
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!= after) {
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if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
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selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
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overlay_path(overlay_nr),
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selftest_path(selftest_nr),
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selftest_path(selftest_nr, ovtype),
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!after ? "enabled" : "disabled");
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return -EINVAL;
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}
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@ -1085,16 +1163,16 @@ static int of_selftest_apply_overlay_check(int overlay_nr, int selftest_nr,
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/* apply an overlay and then revert it while checking before, after states */
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static int of_selftest_apply_revert_overlay_check(int overlay_nr,
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int selftest_nr, int before, int after)
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int selftest_nr, int before, int after,
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enum overlay_type ovtype)
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{
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int ret, ov_id;
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/* selftest device must be in before state */
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if (of_path_platform_device_exists(selftest_path(selftest_nr))
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!= before) {
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if (of_selftest_device_exists(selftest_nr, ovtype) != before) {
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selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
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overlay_path(overlay_nr),
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selftest_path(selftest_nr),
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selftest_path(selftest_nr, ovtype),
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!before ? "enabled" : "disabled");
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return -EINVAL;
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}
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@ -1107,11 +1185,10 @@ static int of_selftest_apply_revert_overlay_check(int overlay_nr,
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}
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/* selftest device must be in after state */
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if (of_path_platform_device_exists(selftest_path(selftest_nr))
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!= after) {
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if (of_selftest_device_exists(selftest_nr, ovtype) != after) {
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selftest(0, "overlay @\"%s\" failed to create @\"%s\" %s\n",
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overlay_path(overlay_nr),
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selftest_path(selftest_nr),
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selftest_path(selftest_nr, ovtype),
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!after ? "enabled" : "disabled");
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return -EINVAL;
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}
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@ -1120,16 +1197,15 @@ static int of_selftest_apply_revert_overlay_check(int overlay_nr,
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if (ret != 0) {
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selftest(0, "overlay @\"%s\" failed to be destroyed @\"%s\"\n",
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overlay_path(overlay_nr),
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selftest_path(selftest_nr));
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selftest_path(selftest_nr, ovtype));
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return ret;
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}
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/* selftest device must be again in before state */
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if (of_path_platform_device_exists(selftest_path(selftest_nr))
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!= before) {
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if (of_selftest_device_exists(selftest_nr, PDEV_OVERLAY) != before) {
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selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
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overlay_path(overlay_nr),
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selftest_path(selftest_nr),
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selftest_path(selftest_nr, ovtype),
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!before ? "enabled" : "disabled");
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return -EINVAL;
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}
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@ -1143,7 +1219,7 @@ static void of_selftest_overlay_0(void)
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int ret;
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/* device should enable */
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ret = of_selftest_apply_overlay_check(0, 0, 0, 1);
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ret = of_selftest_apply_overlay_check(0, 0, 0, 1, PDEV_OVERLAY);
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if (ret != 0)
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return;
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@ -1156,7 +1232,7 @@ static void of_selftest_overlay_1(void)
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int ret;
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/* device should disable */
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ret = of_selftest_apply_overlay_check(1, 1, 1, 0);
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ret = of_selftest_apply_overlay_check(1, 1, 1, 0, PDEV_OVERLAY);
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if (ret != 0)
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return;
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@ -1169,7 +1245,7 @@ static void of_selftest_overlay_2(void)
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int ret;
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/* device should enable */
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ret = of_selftest_apply_overlay_check(2, 2, 0, 1);
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ret = of_selftest_apply_overlay_check(2, 2, 0, 1, PDEV_OVERLAY);
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if (ret != 0)
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return;
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@ -1182,7 +1258,7 @@ static void of_selftest_overlay_3(void)
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int ret;
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/* device should disable */
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ret = of_selftest_apply_overlay_check(3, 3, 1, 0);
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ret = of_selftest_apply_overlay_check(3, 3, 1, 0, PDEV_OVERLAY);
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if (ret != 0)
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return;
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@ -1195,7 +1271,7 @@ static void of_selftest_overlay_4(void)
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int ret;
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/* device should disable */
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ret = of_selftest_apply_overlay_check(4, 4, 0, 1);
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ret = of_selftest_apply_overlay_check(4, 4, 0, 1, PDEV_OVERLAY);
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if (ret != 0)
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return;
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@ -1208,7 +1284,7 @@ static void of_selftest_overlay_5(void)
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int ret;
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/* device should disable */
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ret = of_selftest_apply_revert_overlay_check(5, 5, 0, 1);
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ret = of_selftest_apply_revert_overlay_check(5, 5, 0, 1, PDEV_OVERLAY);
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if (ret != 0)
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return;
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@ -1225,12 +1301,12 @@ static void of_selftest_overlay_6(void)
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/* selftest device must be in before state */
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for (i = 0; i < 2; i++) {
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if (of_path_platform_device_exists(
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selftest_path(selftest_nr + i))
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if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
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!= before) {
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selftest(0, "overlay @\"%s\" with device @\"%s\" %s\n",
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overlay_path(overlay_nr + i),
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selftest_path(selftest_nr + i),
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selftest_path(selftest_nr + i,
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PDEV_OVERLAY),
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!before ? "enabled" : "disabled");
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return;
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}
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@ -1257,12 +1333,12 @@ static void of_selftest_overlay_6(void)
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for (i = 0; i < 2; i++) {
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/* selftest device must be in after state */
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if (of_path_platform_device_exists(
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selftest_path(selftest_nr + i))
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if (of_selftest_device_exists(selftest_nr + i, PDEV_OVERLAY)
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!= after) {
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selftest(0, "overlay @\"%s\" failed @\"%s\" %s\n",
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overlay_path(overlay_nr + i),
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selftest_path(selftest_nr + i),
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selftest_path(selftest_nr + i,
|
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PDEV_OVERLAY),
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!after ? "enabled" : "disabled");
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return;
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}
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@ -1273,19 +1349,20 @@ static void of_selftest_overlay_6(void)
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if (ret != 0) {
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selftest(0, "overlay @\"%s\" failed destroy @\"%s\"\n",
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overlay_path(overlay_nr + i),
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selftest_path(selftest_nr + i));
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selftest_path(selftest_nr + i,
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PDEV_OVERLAY));
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return;
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}
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}
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for (i = 0; i < 2; i++) {
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||||
/* 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", ®);
|
||||
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);
|
||||
}
|
||||
|
|
|
|||
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