nand: add NAND_DEVICE_COMMAND_HANDLER macro

Abstracts the extended NAND command handling to allow the function
signature to be controlled by __COMMAND_HANDLER.

src/flash/davinci_nand.c

@@ -629,9 +629,7 @@ static int davinci_read_page_ecc4infix(struct nand_device_s *nand, uint32_t page
 	return ERROR_OK;
 }
 
-static int davinci_nand_device_command(struct command_context_s *cmd_ctx,
-		char *cmd, char **args, int argc,
-		struct nand_device_s *nand)
+NAND_DEVICE_COMMAND_HANDLER(davinci_nand_device_command)
 {
 	struct davinci_nand *info;
 	target_t *target;

src/flash/lpc3180_nand_controller.c

@@ -29,7 +29,7 @@ static int lpc3180_controller_ready(struct nand_device_s *nand, int timeout);
 
 /* nand device lpc3180 <target#> <oscillator_frequency>
  */
-static int lpc3180_nand_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct nand_device_s *nand)
+NAND_DEVICE_COMMAND_HANDLER(lpc3180_nand_device_command)
 {
 	if (argc < 3)
 	{

src/flash/mx3_nand.c

@@ -61,9 +61,7 @@ static int imx31_command (struct nand_device_s *nand, uint8_t command);
 static int imx31_address (struct nand_device_s *nand, uint8_t address);
 static int imx31_controller_ready (struct nand_device_s *nand, int tout);
 
-static int imx31_nand_device_command (struct command_context_s *cmd_ctx,
-				      char *cmd, char **args, int argc,
-				      struct nand_device_s *nand)
+NAND_DEVICE_COMMAND_HANDLER(imx31_nand_device_command)
 {
 	mx3_nf_controller_t *mx3_nf_info;
 	mx3_nf_info = malloc (sizeof (mx3_nf_controller_t));

src/flash/nand.h

@@ -29,10 +29,13 @@
 
 struct nand_device_s;
 
+#define __NAND_DEVICE_COMMAND(name) \
+		COMMAND_HELPER(name, struct nand_device_s *nand)
+
 typedef struct nand_flash_controller_s
 {
 	char *name;
-	int (*nand_device_command)(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct nand_device_s *nand);
+	__NAND_DEVICE_COMMAND((*nand_device_command));
 	int (*register_commands)(struct command_context_s *cmd_ctx);
 	int (*init)(struct nand_device_s *nand);
 	int (*reset)(struct nand_device_s *nand);
@@ -48,6 +51,8 @@ typedef struct nand_flash_controller_s
 	int (*nand_ready)(struct nand_device_s *nand, int timeout);
 } nand_flash_controller_t;
 
+#define NAND_DEVICE_COMMAND_HANDLER(name) static __NAND_DEVICE_COMMAND(name)
+
 typedef struct nand_block_s
 {
 	uint32_t offset;

src/flash/orion_nand.c

@@ -125,9 +125,7 @@ static int orion_nand_register_commands(struct command_context_s *cmd_ctx)
 	return ERROR_OK;
 }
 
-int orion_nand_device_command(struct command_context_s *cmd_ctx, char *cmd,
-			      char **args, int argc,
-			      struct nand_device_s *nand)
+NAND_DEVICE_COMMAND_HANDLER(orion_nand_device_command)
 {
 	orion_nand_controller_t *hw;
 	uint32_t base;

src/flash/s3c2410_nand.c

@@ -30,9 +30,7 @@
 
 #include "s3c24xx_nand.h"
 
-static int s3c2410_nand_device_command(struct command_context_s *cmd_ctx, char *cmd,
-				char **args, int argc,
-				struct nand_device_s *nand)
+NAND_DEVICE_COMMAND_HANDLER(s3c2410_nand_device_command)
 {
 	s3c24xx_nand_controller_t *info;
 	CALL_S3C24XX_DEVICE_COMMAND(nand, &info);

src/flash/s3c2412_nand.c

@@ -30,9 +30,7 @@
 
 #include "s3c24xx_nand.h"
 
-static int s3c2412_nand_device_command(struct command_context_s *cmd_ctx, char *cmd,
-				char **args, int argc,
-				struct nand_device_s *nand)
+NAND_DEVICE_COMMAND_HANDLER(s3c2412_nand_device_command)
 {
 	s3c24xx_nand_controller_t *info;
 	CALL_S3C24XX_DEVICE_COMMAND(nand, &info);

src/flash/s3c2440_nand.c

@@ -31,9 +31,7 @@
 #include "s3c24xx_nand.h"
 
 
-static int s3c2440_nand_device_command(struct command_context_s *cmd_ctx, char *cmd,
-				char **args, int argc,
-				struct nand_device_s *nand)
+NAND_DEVICE_COMMAND_HANDLER(s3c2440_nand_device_command)
 {
 	s3c24xx_nand_controller_t *info;
 	CALL_S3C24XX_DEVICE_COMMAND(nand, &info);

src/flash/s3c2443_nand.c

@@ -31,9 +31,7 @@
 #include "s3c24xx_nand.h"
 
 
-static int s3c2443_nand_device_command(struct command_context_s *cmd_ctx, char *cmd,
-				char **args, int argc,
-				struct nand_device_s *nand)
+NAND_DEVICE_COMMAND_HANDLER(s3c2443_nand_device_command)
 {
 	s3c24xx_nand_controller_t *info;
 	CALL_S3C24XX_DEVICE_COMMAND(nand, &info);