remove nand_controller->register_callbacks

Replace flash_driver callback with pointer to command_registration.
Eliminates all related routines and allows drivers to omit commands.

src/flash/davinci_nand.c

@@ -78,11 +78,6 @@ static int halted(struct target *target, const char *label)
 	return false;
 }
 
-static int davinci_register_commands(struct command_context *cmd_ctx)
-{
-	return ERROR_OK;
-}
-
 static int davinci_init(struct nand_device *nand)
 {
 	struct davinci_nand *info = nand->controller_priv;
@@ -747,7 +742,6 @@ fail:
 struct nand_flash_controller davinci_nand_controller = {
 	.name			= "davinci",
 	.nand_device_command	= davinci_nand_device_command,
-	.register_commands	= davinci_register_commands,
 	.init			= davinci_init,
 	.reset			= davinci_reset,
 	.command		= davinci_command,

src/flash/lpc3180_nand_controller.c

@@ -893,15 +893,10 @@ static const struct command_registration lpc3180_command_handler[] = {
 	COMMAND_REGISTRATION_DONE
 };
 
-static int lpc3180_register_commands(struct command_context *cmd_ctx)
-{
-	return register_commands(cmd_ctx, NULL, lpc3180_command_handler);
-}
-
 struct nand_flash_controller lpc3180_nand_controller = {
 		.name = "lpc3180",
+		.commands = lpc3180_command_handler,
 		.nand_device_command = lpc3180_nand_device_command,
-		.register_commands = lpc3180_register_commands,
 		.init = lpc3180_init,
 		.reset = lpc3180_reset,
 		.command = lpc3180_command,

src/flash/mx3_nand.c

@@ -315,11 +315,6 @@ static int imx31_nand_ready (struct nand_device *nand, int timeout)
 	return imx31_controller_ready (nand, timeout);
 }
 
-static int imx31_register_commands (struct command_context *cmd_ctx)
-{
-	return ERROR_OK;
-}
-
 static int imx31_reset (struct nand_device *nand)
 {
 	/*
@@ -871,7 +866,6 @@ static int do_data_output (struct nand_device *nand)
 struct nand_flash_controller imx31_nand_flash_controller = {
 		.name = "imx31",
 		.nand_device_command = &imx31_nand_device_command,
-		.register_commands = &imx31_register_commands,
 		.init = &imx31_init,
 		.reset = &imx31_reset,
 		.command = &imx31_command,

src/flash/nand.c

@@ -214,11 +214,12 @@ COMMAND_HANDLER(handle_nand_list_drivers)
 static COMMAND_HELPER(create_nand_device, const char *bank_name,
 		struct nand_flash_controller *controller)
 {
-	int retval = controller->register_commands(CMD_CTX);
-	if (ERROR_OK != retval)
+	if (NULL != controller->commands)
 	{
-		LOG_ERROR("couldn't register '%s' commands", controller->name);
-		return retval;
+		int retval = register_commands(CMD_CTX, NULL,
+				controller->commands);
+		if (ERROR_OK != retval)
+			return retval;
 	}
 	struct nand_device *c = malloc(sizeof(struct nand_device));
 
@@ -233,7 +234,7 @@ static COMMAND_HELPER(create_nand_device, const char *bank_name,
 	c->use_raw = 0;
 	c->next = NULL;
 
-	retval = CALL_COMMAND_HANDLER(controller->nand_device_command, c);
+	int retval = CALL_COMMAND_HANDLER(controller->nand_device_command, c);
 	if (ERROR_OK != retval)
 	{
 		LOG_ERROR("'%s' driver rejected nand flash", controller->name);

src/flash/nand.h

@@ -35,8 +35,8 @@ struct nand_device;
 struct nand_flash_controller
 {
 	char *name;
+	const struct command_registration *commands;
 	__NAND_DEVICE_COMMAND((*nand_device_command));
-	int (*register_commands)(struct command_context *cmd_ctx);
 	int (*init)(struct nand_device *nand);
 	int (*reset)(struct nand_device *nand);
 	int (*command)(struct nand_device *nand, uint8_t command);

src/flash/orion_nand.c

@@ -120,11 +120,6 @@ static int orion_nand_controller_ready(struct nand_device *nand, int timeout)
 	return 1;
 }
 
-static int orion_nand_register_commands(struct command_context *cmd_ctx)
-{
-	return ERROR_OK;
-}
-
 NAND_DEVICE_COMMAND_HANDLER(orion_nand_device_command)
 {
 	struct orion_nand_controller *hw;
@@ -180,7 +175,6 @@ struct nand_flash_controller orion_nand_controller =
 	.reset			= orion_nand_reset,
 	.controller_ready	= orion_nand_controller_ready,
 	.nand_device_command	= orion_nand_device_command,
-	.register_commands	= orion_nand_register_commands,
 	.init			= orion_nand_init,
 };
 

src/flash/s3c2410_nand.c

@@ -110,7 +110,6 @@ static int s3c2410_nand_ready(struct nand_device *nand, int timeout)
 struct nand_flash_controller s3c2410_nand_controller = {
 		.name = "s3c2410",
 		.nand_device_command = &s3c2410_nand_device_command,
-		.register_commands = &s3c24xx_register_commands,
 		.init = &s3c2410_init,
 		.reset = &s3c24xx_reset,
 		.command = &s3c24xx_command,

src/flash/s3c2412_nand.c

@@ -64,7 +64,6 @@ static int s3c2412_init(struct nand_device *nand)
 struct nand_flash_controller s3c2412_nand_controller = {
 		.name = "s3c2412",
 		.nand_device_command = &s3c2412_nand_device_command,
-		.register_commands = &s3c24xx_register_commands,
 		.init = &s3c2412_init,
 		.reset = &s3c24xx_reset,
 		.command = &s3c24xx_command,

src/flash/s3c2440_nand.c

@@ -156,7 +156,6 @@ int s3c2440_write_block_data(struct nand_device *nand, uint8_t *data, int data_s
 struct nand_flash_controller s3c2440_nand_controller = {
 		.name = "s3c2440",
 		.nand_device_command = &s3c2440_nand_device_command,
-		.register_commands = &s3c24xx_register_commands,
 		.init = &s3c2440_init,
 		.reset = &s3c24xx_reset,
 		.command = &s3c24xx_command,

src/flash/s3c2443_nand.c

@@ -65,7 +65,6 @@ static int s3c2443_init(struct nand_device *nand)
 struct nand_flash_controller s3c2443_nand_controller = {
 		.name = "s3c2443",
 		.nand_device_command = &s3c2443_nand_device_command,
-		.register_commands = &s3c24xx_register_commands,
 		.init = &s3c2443_init,
 		.reset = &s3c24xx_reset,
 		.command = &s3c24xx_command,

src/flash/s3c24xx_nand.c

@@ -52,11 +52,6 @@ S3C24XX_DEVICE_COMMAND()
 	return ERROR_OK;
 }
 
-int s3c24xx_register_commands(struct command_context *cmd_ctx)
-{
-	return ERROR_OK;
-}
-
 int s3c24xx_reset(struct nand_device *nand)
 {
 	struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;

src/flash/s3c24xx_nand.h

@@ -59,8 +59,6 @@ S3C24XX_DEVICE_COMMAND();
 			return retval; \
 	} while (0)
 
-int s3c24xx_register_commands(struct command_context *cmd_ctx);
-
 int s3c24xx_reset(struct nand_device *nand);
 
 int s3c24xx_command(struct nand_device *nand, uint8_t command);