nand: Add common functions to linux/mtd/nand.h

Functions often used in SPL are now part of linux/mtd/nand.h.
Static modifiers are removed from these functions in
drivers/mtd/nand/nand_base.c.

Signed-off-by: Simon Schwarz <simonschwarzcor@gmail.com>
Cc: scottwood@freescale.com
Cc: s-paulraj@ti.com
Cc: albert.u.boot@aribaud.net
Acked-by: Scott Wood <scottwood@freescale.com>

drivers/mtd/nand/nand_base.c

@@ -133,7 +133,7 @@ static void nand_release_device (struct mtd_info *mtd)
  *
  * Default read function for 8bit buswith
  */
-static uint8_t nand_read_byte(struct mtd_info *mtd)
+uint8_t nand_read_byte(struct mtd_info *mtd)
 {
 	struct nand_chip *chip = mtd->priv;
 	return readb(chip->IO_ADDR_R);
@@ -196,7 +196,7 @@ static void nand_select_chip(struct mtd_info *mtd, int chipnr)
  *
  * Default write function for 8bit buswith
  */
-static void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
+void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
 {
 	int i;
 	struct nand_chip *chip = mtd->priv;
@@ -249,7 +249,7 @@ static int nand_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
  *
  * Default write function for 16bit buswith
  */
-static void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
+void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
 {
 	int i;
 	struct nand_chip *chip = mtd->priv;

include/linux/mtd/nand.h

@@ -623,4 +623,11 @@ struct platform_nand_chip *get_platform_nandchip(struct mtd_info *mtd)
 	return chip->priv;
 }
 
+/* Standard NAND functions from nand_base.c */
+void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len);
+void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len);
+void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len);
+void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len);
+uint8_t nand_read_byte(struct mtd_info *mtd);
+
 #endif /* __LINUX_MTD_NAND_H */

include/nand.h

@@ -135,9 +135,6 @@ int nand_get_lock_status(nand_info_t *meminfo, loff_t offset);
 int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst);
 void nand_deselect(void);
 
-void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len);
-void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len);
-
 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
 void board_nand_select_device(struct nand_chip *nand, int chip);
 #endif