remove register_callbacks from jtag interface

Changes the jtag_interface->register_callbacks field to a list of
commands to be registered.  Changes callback to invocation of
register_commands() with that command registration list.  Removes all
JTAG interface driver register_command callback functions, which the
previous commits had converted into identical calls.

src/jtag/amt_jtagaccel.c

@@ -558,14 +558,9 @@ static const struct command_registration amtjtagaccel_command_handlers[] = {
 	COMMAND_REGISTRATION_DONE
 };
 
-static int amt_jtagaccel_register_commands(struct command_context *cmd_ctx)
-{
-	return register_commands(cmd_ctx, NULL, amtjtagaccel_command_handlers);
-}
-
 struct jtag_interface amt_jtagaccel_interface = {
 		.name = "amt_jtagaccel",
-		.register_commands = &amt_jtagaccel_register_commands,
+		.commands = amtjtagaccel_command_handlers,
 		.init = &amt_jtagaccel_init,
 		.quit = &amt_jtagaccel_quit,
 		.speed = &amt_jtagaccel_speed,

src/jtag/arm-jtag-ew.c

@@ -512,17 +512,15 @@ static const struct command_registration armjtagew_command_handlers[] = {
 	COMMAND_REGISTRATION_DONE
 };
 
-static int armjtagew_register_commands(struct command_context *cmd_ctx)
-{
-	return register_commands(cmd_ctx, NULL, armjtagew_command_handlers);
-}
-
 struct jtag_interface armjtagew_interface = {
 		.name = "arm-jtag-ew",
+
+		.commands = armjtagew_command_handlers,
+
 		.execute_queue = &armjtagew_execute_queue,
 		.speed = &armjtagew_speed,
 		.khz = &armjtagew_khz,
-		.register_commands = &armjtagew_register_commands,
+
 		.init = &armjtagew_init,
 		.quit = &armjtagew_quit,
 	};

src/jtag/dummy.c

@@ -134,11 +134,6 @@ static int dummy_speed(int speed)
 	return ERROR_OK;
 }
 
-static int dummy_register_commands(struct command_context *cmd_ctx)
-{
-	return ERROR_OK;
-}
-
 static int dummy_init(void)
 {
 	bitbang_interface = &dummy_bitbang;
@@ -160,7 +155,6 @@ struct jtag_interface dummy_interface = {
 		.execute_queue = &bitbang_execute_queue,
 
 		.speed = &dummy_speed,
-		.register_commands = &dummy_register_commands,
 		.khz = &dummy_khz,
 		.speed_div = &dummy_speed_div,
 

src/jtag/ft2232.c

@@ -4009,15 +4009,9 @@ static const struct command_registration ft2232_command_handlers[] = {
 	COMMAND_REGISTRATION_DONE
 };
 
-static int ft2232_register_commands(struct command_context* cmd_ctx)
-{
-	return register_commands(cmd_ctx, NULL, ft2232_command_handlers);
-}
-
-
 struct jtag_interface ft2232_interface = {
 		.name = "ft2232",
-		.register_commands = &ft2232_register_commands,
+		.commands = ft2232_command_handlers,
 		.init = &ft2232_init,
 		.quit = &ft2232_quit,
 		.speed = &ft2232_speed,

src/jtag/gw16012.c

@@ -573,14 +573,9 @@ static const struct command_registration gw16012_command_handlers[] = {
 	COMMAND_REGISTRATION_DONE
 };
 
-static int gw16012_register_commands(struct command_context *cmd_ctx)
-{
-	return register_commands(cmd_ctx, NULL, gw16012_command_handlers);
-}
-
 struct jtag_interface gw16012_interface = {
 		.name = "gw16012",
-		.register_commands = &gw16012_register_commands,
+		.commands = gw16012_command_handlers,
 		.init = &gw16012_init,
 		.quit = &gw16012_quit,
 		.speed = &gw16012_speed,

src/jtag/interface.h

@@ -204,10 +204,8 @@ struct jtag_interface {
 	/**
 	 * The interface driver may register additional commands to expose
 	 * additional features not covered by the standard command set.
-	 * @param cmd_ctx The context in which commands should be registered.
-	 * @returns ERROR_OK on success, or an error code on failure.
 	 */
-	int (*register_commands)(struct command_context* cmd_ctx);
+	const struct command_registration *commands;
 
 	/**
 	 * Interface driver must initalize any resources and connect to a

src/jtag/jlink.c

@@ -644,18 +644,16 @@ static const struct command_registration jlink_command_handlers[] = {
 	COMMAND_REGISTRATION_DONE
 };
 
-static int jlink_register_commands(struct command_context *cmd_ctx)
-{
-	return register_commands(cmd_ctx, NULL, jlink_command_handlers);
-}
-
 struct jtag_interface jlink_interface = {
 		.name = "jlink",
+
+		.commands = jlink_command_handlers,
+
 		.execute_queue = &jlink_execute_queue,
 		.speed = &jlink_speed,
 		.speed_div = &jlink_speed_div,
 		.khz = &jlink_khz,
-		.register_commands = &jlink_register_commands,
+
 		.init = &jlink_init,
 		.quit = &jlink_quit,
 	};

src/jtag/parport.c

@@ -517,19 +517,17 @@ static const struct command_registration parport_command_handlers[] = {
 	COMMAND_REGISTRATION_DONE
 };
 
-
-static int parport_register_commands(struct command_context *cmd_ctx)
-{
-	return register_commands(cmd_ctx, NULL, parport_command_handlers);
-}
-
 struct jtag_interface parport_interface = {
-	.name =			"parport",
-	.register_commands =	parport_register_commands,
-	.init =			parport_init,
-	.quit =			parport_quit,
-	.khz =			parport_khz,
-	.speed_div =		parport_speed_div,
-	.speed =		parport_speed,
-	.execute_queue =	bitbang_execute_queue,
-};
+		.name = "parport",
+
+		.commands = parport_command_handlers,
+
+		.init = &parport_init,
+		.quit = &parport_quit,
+
+		.khz = &parport_khz,
+		.speed_div = &parport_speed_div,
+		.speed = &parport_speed,
+
+		.execute_queue = &bitbang_execute_queue,
+	};

src/jtag/presto.c

@@ -750,11 +750,6 @@ static const struct command_registration presto_command_handlers[] = {
 	COMMAND_REGISTRATION_DONE
 };
 
-static int presto_jtag_register_commands(struct command_context *cmd_ctx)
-{
-	return register_commands(cmd_ctx, NULL, presto_command_handlers);
-}
-
 static int presto_jtag_init(void)
 {
 	if (presto_open(presto_serial) != ERROR_OK)
@@ -792,11 +787,14 @@ static int presto_jtag_quit(void)
 
 struct jtag_interface presto_interface = {
 		.name = "presto",
+
+		.commands = presto_command_handlers,
+
 		.execute_queue = &bitq_execute_queue,
 		.speed = &presto_jtag_speed,
 		.khz = &presto_jtag_khz,
 		.speed_div = &presto_jtag_speed_div,
-		.register_commands = &presto_jtag_register_commands,
+
 		.init = &presto_jtag_init,
 		.quit = &presto_jtag_quit,
 	};

src/jtag/rlink/rlink.c

@@ -1568,49 +1568,6 @@ int rlink_khz(
 }
 
 
-#if 0
-static
-int
-handle_dtc_directory_command(
-	struct command_context *cmd_ctx,
-	char *cmd,
-	char **args,
-	int argc
-) {
-	if (argc != 1) {
-		LOG_ERROR("expected exactly one argument to rlink_dtc_directory <directory-path>");
-		return(ERROR_INVALID_ARGUMENTS);
-	}
-
-	printf("handle_dtc_directory_command called with \"%s\"\n", args[0]);
-
-	return(ERROR_OK);
-}
-#endif
-
-
-static
-int rlink_register_commands(struct command_context *cmd_ctx)
-{
-
-#ifdef _DEBUG_JTAG_IO_
-	LOG_DEBUG("rlink_register_commands called with cmd_ctx=%p\n", cmd_ctx);
-#endif
-
-#if 0
-	register_command(
-		cmd_ctx, NULL,
-		"rlink_dtc_directory",
-		handle_dtc_directory_command,
-		COMMAND_CONFIG,
-		"The directory in which to search for DTC load images"
-);
-#endif
-
-	return ERROR_OK;
-}
-
-
 static
 int rlink_init(void)
 {
@@ -1848,7 +1805,6 @@ struct jtag_interface rlink_interface =
 	.name = "rlink",
 	.init = rlink_init,
 	.quit = rlink_quit,
-	.register_commands = rlink_register_commands,
 	.speed = rlink_speed,
 	.speed_div = rlink_speed_div,
 	.khz = rlink_khz,

src/jtag/tcl.c

@@ -636,9 +636,10 @@ COMMAND_HANDLER(handle_interface_command)
 		if (strcmp(CMD_ARGV[0], jtag_interfaces[i]->name) != 0)
 			continue;
 
-		if (NULL != jtag_interfaces[i]->register_commands)
+		if (NULL != jtag_interfaces[i]->commands)
 		{
-			int retval = jtag_interfaces[i]->register_commands(CMD_CTX);
+			int retval = register_commands(CMD_CTX, NULL,
+					jtag_interfaces[i]->commands);
 			if (ERROR_OK != retval)
 				return retval;
 		}

src/jtag/vsllink.c

@@ -1890,14 +1890,10 @@ static const struct command_registration vsllink_command_handlers[] = {
 	COMMAND_REGISTRATION_DONE
 };
 
-static int vsllink_register_commands(struct command_context *cmd_ctx)
-{
-	return register_commands(cmd_ctx, NULL, vsllink_command_handlers);
-}
-
 struct jtag_interface vsllink_interface = {
 		.name = "vsllink",
-		.register_commands = &vsllink_register_commands,
+		.commands = vsllink_command_handlers,
+
 		.init = &vsllink_init,
 		.quit = &vsllink_quit,
 		.khz = &vsllink_khz,