X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fspi_flash.h;h=3d747c925b9e60c40875f9eb59645fe6a4f273c7;hb=92832045c54586e9dffa082ff8cd8c2ef6040757;hp=b336619487659f70beac915c2b0138b4b3e4b078;hpb=186529953fd10a97e6343418095edd1c535aaeb2;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/spi_flash.h b/include/spi_flash.h
index b336619..3d747c9 100644
--- a/include/spi_flash.h
+++ b/include/spi_flash.h
@@ -9,10 +9,11 @@
 #ifndef _SPI_FLASH_H_
 #define _SPI_FLASH_H_
 
-#include <dm.h>	/* Because we dereference struct udevice here */
 #include <linux/types.h>
 #include <linux/mtd/spi-nor.h>
 
+struct udevice;
+
 /* by default ENV use the same parameters than SF command */
 #ifndef CONFIG_ENV_SPI_BUS
 # define CONFIG_ENV_SPI_BUS	CONFIG_SF_DEFAULT_BUS
@@ -34,6 +35,19 @@ struct dm_spi_flash_ops {
 	int (*write)(struct udevice *dev, u32 offset, size_t len,
 		     const void *buf);
 	int (*erase)(struct udevice *dev, u32 offset, size_t len);
+	/**
+	 * get_sw_write_prot() - Check state of software write-protect feature
+	 *
+	 * SPI flash chips can lock a region of the flash defined by a
+	 * 'protected area'. This function checks if this protected area is
+	 * defined.
+	 *
+	 * @dev:	SPI flash device
+	 * @return 0 if no region is write-protected, 1 if a region is
+	 *	write-protected, -ENOSYS if the driver does not implement this,
+	 *	other -ve value on error
+	 */
+	int (*get_sw_write_prot)(struct udevice *dev);
 };
 
 /* Access the serial operations for a device */
@@ -76,6 +90,20 @@ int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len,
 int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len);
 
 /**
+ * spl_flash_get_sw_write_prot() - Check state of software write-protect feature
+ *
+ * SPI flash chips can lock a region of the flash defined by a
+ * 'protected area'. This function checks if this protected area is
+ * defined.
+ *
+ * @dev:	SPI flash device
+ * @return 0 if no region is write-protected, 1 if a region is
+ *	write-protected, -ENOSYS if the driver does not implement this,
+ *	other -ve value on error
+ */
+int spl_flash_get_sw_write_prot(struct udevice *dev);
+
+/**
  * spi_flash_std_probe() - Probe a SPI flash device
  *
  * This is the standard internal method for probing a SPI flash device to
@@ -96,7 +124,9 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
 				  unsigned int max_hz, unsigned int spi_mode);
 
 /* Compatibility function - this is the old U-Boot API */
-void spi_flash_free(struct spi_flash *flash);
+static inline void spi_flash_free(struct spi_flash *flash)
+{
+}
 
 static inline int spi_flash_read(struct spi_flash *flash, u32 offset,
 				 size_t len, void *buf)