Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6:
  [MTD] Cleanup of 'ioremap balanced with iounmap for drivers/mtd subsystem'
  [MTD] fix nftl_write warning
  [MTD] fix printk warning
  [MTD ONENAND] Check OneNAND lock scheme & all block unlock command support
  [MTD ONENAND] Remove unused MTD_ONENAND_SYNC_READ configuration
  [MTD ONENAND] Fix OneNAND probe
  [MTD NAND] Provide prototype for newly-exported nand_wait_ready()
  [MTD] Remove #ifndef __KERNEL__ hack in <mtd/mtd-abi.h>
  [MTD NAND] Allow override of page read and write functions.
  [MTD NAND] Allocate chip->buffers separately to allow it to be overridden
  [MTD NAND] Split nand_scan() into two parts; allow board driver to intervene
  [MTD NAND] Export nand_wait_ready() for use by board drivers

1 files changed, 23 insertions, 2 deletions

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 0b4cd2fa64aa..70420bbae82b 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -27,9 +27,17 @@
 struct mtd_info;
 /* Scan and identify a NAND device */
 extern int nand_scan (struct mtd_info *mtd, int max_chips);
+/* Separate phases of nand_scan(), allowing board driver to intervene
+ * and override command or ECC setup according to flash type */
+extern int nand_scan_ident(struct mtd_info *mtd, int max_chips);
+extern int nand_scan_tail(struct mtd_info *mtd);
+
 /* Free resources held by the NAND device */
 extern void nand_release (struct mtd_info *mtd);
 
+/* Internal helper for board drivers which need to override command function */
+extern void nand_wait_ready(struct mtd_info *mtd);
+
 /* The maximum number of NAND chips in an array */
 #define NAND_MAX_CHIPS          8
 
@@ -178,7 +186,9 @@ typedef enum {
 #define NAND_USE_FLASH_BBT      0x00010000
 /* This option skips the bbt scan during initialization. */
 #define NAND_SKIP_BBTSCAN       0x00020000
-
+/* This option is defined if the board driver allocates its own buffers
+   (e.g. because it needs them DMA-coherent */
+#define NAND_OWN_BUFFERS        0x00040000
 /* Options set by nand scan */
 /* Nand scan has allocated controller struct */
 #define NAND_CONTROLLER_ALLOC   0x80000000
@@ -228,6 +238,8 @@ struct nand_hw_control {
  *              be provided if an hardware ECC is available
  * @calculate:  function for ecc calculation or readback from ecc hardware
  * @correct:    function for ecc correction, matching to ecc generator (sw/hw)
+ * @read_page_raw:      function to read a raw page without ECC
+ * @write_page_raw:     function to write a raw page without ECC
  * @read_page:  function to read a page according to the ecc generator requirements
  * @write_page: function to write a page according to the ecc generator requirements
  * @read_oob:   function to read chip OOB data
@@ -249,6 +261,12 @@ struct nand_ecc_ctrl {
         int                     (*correct)(struct mtd_info *mtd, uint8_t *dat,
                                            uint8_t *read_ecc,
                                            uint8_t *calc_ecc);
+        int                     (*read_page_raw)(struct mtd_info *mtd,
+                                                 struct nand_chip *chip,
+                                                 uint8_t *buf);
+        void                    (*write_page_raw)(struct mtd_info *mtd,
+                                                  struct nand_chip *chip,
+                                                  const uint8_t *buf);
         int                     (*read_page)(struct mtd_info *mtd,
                                              struct nand_chip *chip,
                                              uint8_t *buf);
@@ -337,6 +355,7 @@ struct nand_buffers {
  * @priv:               [OPTIONAL] pointer to private chip date
  * @errstat:            [OPTIONAL] hardware specific function to perform additional error status checks
  *                      (determine if errors are correctable)
+ * @write_page          [REPLACEABLE] High-level page write function
  */
 
 struct nand_chip {
@@ -359,6 +378,8 @@ struct nand_chip {
         void            (*erase_cmd)(struct mtd_info *mtd, int page);
         int             (*scan_bbt)(struct mtd_info *mtd);
         int             (*errstat)(struct mtd_info *mtd, struct nand_chip *this, int state, int status, int page);
+        int             (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
+                                      const uint8_t *buf, int page, int cached, int raw);
 
         int             chip_delay;
         unsigned int    options;
@@ -380,7 +401,7 @@ struct nand_chip {
         struct nand_ecclayout   *ecclayout;
 
         struct nand_ecc_ctrl ecc;
-        struct nand_buffers buffers;
+        struct nand_buffers *buffers;
         struct nand_hw_control hwcontrol;
 
         struct mtd_oob_ops ops;