pwm: shell: filter device lookup using DEVICE_API macros

Filter for PWM devices when looking them up in dynamic shell commands.

Signed-off-by: Yishai Jaffe <[email protected]>

Author: yishai1999

drivers/pwm/pwm_shell.c

@@ -126,12 +126,29 @@ static int cmd_nsec(const struct shell *sh, size_t argc, char **argv)
 	return 0;
 }
 
+static bool device_is_pwm_and_ready(const struct device *dev)
+{
+	return device_is_ready(dev) && DEVICE_API_IS(pwm, dev);
+}
+
+static void device_name_get(size_t idx, struct shell_static_entry *entry)
+{
+	const struct device *dev = shell_device_filter(idx, device_is_pwm_and_ready);
+
+	entry->syntax = (dev != NULL) ? dev->name : NULL;
+	entry->handler = NULL;
+	entry->help = NULL;
+	entry->subcmd = NULL;
+}
+
+SHELL_DYNAMIC_CMD_CREATE(dsub_device_name, device_name_get);
+
 SHELL_STATIC_SUBCMD_SET_CREATE(pwm_cmds,
-	SHELL_CMD_ARG(cycles, NULL, "<device> <channel> <period in cycles> "
+	SHELL_CMD_ARG(cycles, &dsub_device_name, "<device> <channel> <period in cycles> "
 		      "<pulse width in cycles> [flags]", cmd_cycles, 5, 1),
-	SHELL_CMD_ARG(usec, NULL, "<device> <channel> <period in usec> "
+	SHELL_CMD_ARG(usec, &dsub_device_name, "<device> <channel> <period in usec> "
 		      "<pulse width in usec> [flags]", cmd_usec, 5, 1),
-	SHELL_CMD_ARG(nsec, NULL, "<device> <channel> <period in nsec> "
+	SHELL_CMD_ARG(nsec, &dsub_device_name, "<device> <channel> <period in nsec> "
 		      "<pulse width in nsec> [flags]", cmd_nsec, 5, 1),
 	SHELL_SUBCMD_SET_END
 );