test: dm: add button_cmd test
Add a test for the button_cmd feature. This validates that commands can
be mapped to two buttons, that the correct command runs based on which
button is pressed, that only 1 command is run, and that no command runs
if button_cmd_0_name is wrong or unset.
Additionally, fix a potential uninitialised variable use caught by these
tests, the btn variable in get_button_cmd() is assumed to be null if
button_get_by_label() fails, but it's actually used uninitialised in
that case.
CONFIG_BUTTON is now enabled automatically and was removed when running
save_defconfig.
Fixes: e761035b6423 ("boot: add support for button commands")
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
diff --git a/test/dm/button.c b/test/dm/button.c
index 3318668..830d96f 100644
--- a/test/dm/button.c
+++ b/test/dm/button.c
@@ -131,3 +131,99 @@
return 0;
}
DM_TEST(dm_test_button_keys_adc, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
+
+/* Test of the button uclass using the button_gpio driver */
+static int dm_test_button_cmd(struct unit_test_state *uts)
+{
+ struct udevice *btn1_dev, *btn2_dev, *gpio;
+ const char *envstr;
+
+#define BTN1_GPIO 3
+#define BTN2_GPIO 4
+#define BTN1_PASS_VAR "test_button_cmds_0"
+#define BTN2_PASS_VAR "test_button_cmds_1"
+
+ /*
+ * Buttons 1 and 2 are connected to gpio_a gpios 3 and 4 respectively.
+ * set the GPIOs to known values and then check that the appropriate
+ * commands are run when invoking process_button_cmds().
+ */
+ ut_assertok(uclass_get_device(UCLASS_BUTTON, 1, &btn1_dev));
+ ut_assertok(uclass_get_device(UCLASS_BUTTON, 2, &btn2_dev));
+ ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio));
+
+ /*
+ * Map a command to button 1 and check that it process_button_cmds()
+ * runs it if called with button 1 pressed.
+ */
+ ut_assertok(env_set("button_cmd_0_name", "button1"));
+ ut_assertok(env_set("button_cmd_0", "env set " BTN1_PASS_VAR " PASS"));
+ ut_assertok(sandbox_gpio_set_value(gpio, BTN1_GPIO, 1));
+ /* Sanity check that the button is actually pressed */
+ ut_asserteq(BUTTON_ON, button_get_state(btn1_dev));
+ process_button_cmds();
+ ut_assertnonnull((envstr = env_get(BTN1_PASS_VAR)));
+ ut_asserteq_str(envstr, "PASS");
+
+ /* Clear result */
+ ut_assertok(env_set(BTN1_PASS_VAR, NULL));
+
+ /*
+ * Map a command for button 2, press it, check that only the command
+ * for button 1 runs because it comes first and is also pressed.
+ */
+ ut_assertok(env_set("button_cmd_1_name", "button2"));
+ ut_assertok(env_set("button_cmd_1", "env set " BTN2_PASS_VAR " PASS"));
+ ut_assertok(sandbox_gpio_set_value(gpio, BTN2_GPIO, 1));
+ ut_asserteq(BUTTON_ON, button_get_state(btn2_dev));
+ process_button_cmds();
+ /* Check that button 1 triggered again */
+ ut_assertnonnull((envstr = env_get(BTN1_PASS_VAR)));
+ ut_asserteq_str(envstr, "PASS");
+ /* And button 2 didn't */
+ ut_assertnull(env_get(BTN2_PASS_VAR));
+
+ /* Clear result */
+ ut_assertok(env_set(BTN1_PASS_VAR, NULL));
+
+ /*
+ * Release button 1 and check that the command for button 2 is run
+ */
+ ut_assertok(sandbox_gpio_set_value(gpio, BTN1_GPIO, 0));
+ process_button_cmds();
+ ut_assertnull(env_get(BTN1_PASS_VAR));
+ /* Check that the command for button 2 ran */
+ ut_assertnonnull((envstr = env_get(BTN2_PASS_VAR)));
+ ut_asserteq_str(envstr, "PASS");
+
+ /* Clear result */
+ ut_assertok(env_set(BTN2_PASS_VAR, NULL));
+
+ /*
+ * Unset "button_cmd_0_name" and check that no commands run even
+ * with both buttons pressed.
+ */
+ ut_assertok(env_set("button_cmd_0_name", NULL));
+ /* Press button 1 (button 2 is already pressed )*/
+ ut_assertok(sandbox_gpio_set_value(gpio, BTN1_GPIO, 1));
+ ut_asserteq(BUTTON_ON, button_get_state(btn1_dev));
+ process_button_cmds();
+ ut_assertnull(env_get(BTN1_PASS_VAR));
+ ut_assertnull(env_get(BTN2_PASS_VAR));
+
+ /*
+ * Check that no command is run if the button name is wrong.
+ */
+ ut_assertok(env_set("button_cmd_0_name", "invalid_button"));
+ process_button_cmds();
+ ut_assertnull(env_get(BTN1_PASS_VAR));
+ ut_assertnull(env_get(BTN2_PASS_VAR));
+
+#undef BTN1_PASS_VAR
+#undef BTN2_PASS_VAR
+#undef BTN1_GPIO
+#undef BTN2_GPIO
+
+ return 0;
+}
+DM_TEST(dm_test_button_cmd, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);