spi_flash: Add spi_flash_probe_fdt() to locate SPI by FDT node

[karo-tx-uboot.git] / include / spi_flash.h

diff --git a/include/spi_flash.h b/include/spi_flash.h
index b7cce12ef980f5f191bef859fad2eb6cd66132a7..afc3a5809eac7ee4b1f31dda895f02042bc322fa 100644 (file)
--- a/include/spi_flash.h
+++ b/include/spi_flash.h
@@ -9,7 +9,7 @@
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation. 
+ * version 2 as published by the Free Software Foundation.
  */
 
 #ifndef _SPI_FLASH_H_
@@ -27,13 +27,13 @@
  * @size:              Total flash size
  * @page_size:         Write (page) size
  * @sector_size:       Sector size
- * @erase_size:        Erase size
+ * @erase_size:                Erase size
  * @bank_read_cmd:     Bank read cmd
  * @bank_write_cmd:    Bank write cmd
  * @bank_curr:         Current flash bank
  * @poll_cmd:          Poll cmd - for flash erase/program
  * @erase_cmd:         Erase cmd 4K, 32K, 64K
- * @memory_map:        Address of read-only SPI flash access
+ * @memory_map:                Address of read-only SPI flash access
  * @read:              Flash read ops: Read len bytes at offset into buf
  *                     Supported cmds: Fast Array Read
  * @write:             Flash write ops: Write len bytes from buf into offeset
@@ -67,6 +67,19 @@ struct spi_flash {
 
 struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
                unsigned int max_hz, unsigned int spi_mode);
+
+/**
+ * Set up a new SPI flash from an fdt node
+ *
+ * @param blob         Device tree blob
+ * @param slave_node   Pointer to this SPI slave node in the device tree
+ * @param spi_node     Cached pointer to the SPI interface this node belongs
+ *                     to
+ * @return 0 if ok, -1 on error
+ */
+struct spi_flash *spi_flash_probe_fdt(const void *blob, int slave_node,
+                                     int spi_node);
+
 void spi_flash_free(struct spi_flash *flash);
 
 static inline int spi_flash_read(struct spi_flash *flash, u32 offset,