[MTD] OneNAND: Reduce internal BufferRAM operations

[sfrench/cifs-2.6.git] / include / linux / mtd / onenand.h

diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index 6f045b586e768b16d2d9949828a6d6f2d99f5985..d8af8a95e58d86305227afb9a8385911b4b67b18 100644 (file)
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -1,7 +1,7 @@
 /*
  *  linux/include/linux/mtd/onenand.h
  *
- *  Copyright (C) 2005-2006 Samsung Electronics
+ *  Copyright (C) 2005-2007 Samsung Electronics
  *  Kyungmin Park <kyungmin.park@samsung.com>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -13,6 +13,7 @@
 #define __LINUX_MTD_ONENAND_H
 
 #include <linux/spinlock.h>
+#include <linux/completion.h>
 #include <linux/mtd/onenand_regs.h>
 #include <linux/mtd/bbm.h>
 
@@ -33,7 +34,6 @@ typedef enum {
        FL_WRITING,
        FL_ERASING,
        FL_SYNCING,
-       FL_UNLOCKING,
        FL_LOCKING,
        FL_RESETING,
        FL_OTPING,
@@ -42,14 +42,10 @@ typedef enum {
 
 /**
  * struct onenand_bufferram - OneNAND BufferRAM Data
- * @block:             block address in BufferRAM
- * @page:              page address in BufferRAM
- * @valid:             valid flag
+ * @blockpage:         block & page address in BufferRAM
  */
 struct onenand_bufferram {
-       int block;
-       int page;
-       int valid;
+       int     blockpage;
 };
 
 /**
@@ -63,7 +59,6 @@ struct onenand_bufferram {
  *                     partly be set to inform onenand_scan about
  * @erase_shift:       [INTERN] number of address bits in a block
  * @page_shift:                [INTERN] number of address bits in a page
- * @ppb_shift:         [INTERN] number of address bits in a pages per block
  * @page_mask:         [INTERN] a page per block mask
  * @bufferram_index:   [INTERN] BufferRAM index
  * @bufferram:         [INTERN] BufferRAM info
@@ -88,6 +83,7 @@ struct onenand_bufferram {
  *                     operation is in progress
  * @state:             [INTERN] the current state of the OneNAND device
  * @page_buf:          data buffer
+ * @subpagesize:       [INTERN] holds the subpagesize
  * @ecclayout:         [REPLACEABLE] the default ecc placement scheme
  * @bbm:               [REPLACEABLE] pointer to Bad Block Management
  * @priv:              [OPTIONAL] pointer to private chip date
@@ -102,7 +98,6 @@ struct onenand_chip {
 
        unsigned int            erase_shift;
        unsigned int            page_shift;
-       unsigned int            ppb_shift;      /* Pages per block shift */
        unsigned int            page_mask;
 
        unsigned int            bufferram_index;
@@ -120,11 +115,15 @@ struct onenand_chip {
        int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
        int (*scan_bbt)(struct mtd_info *mtd);
 
+       struct completion       complete;
+       int                     irq;
+
        spinlock_t              chip_lock;
        wait_queue_head_t       wq;
        onenand_state_t         state;
        unsigned char           *page_buf;
 
+       int                     subpagesize;
        struct nand_ecclayout   *ecclayout;
 
        void                    *bbm;
@@ -138,12 +137,16 @@ struct onenand_chip {
 #define ONENAND_CURRENT_BUFFERRAM(this)                (this->bufferram_index)
 #define ONENAND_NEXT_BUFFERRAM(this)           (this->bufferram_index ^ 1)
 #define ONENAND_SET_NEXT_BUFFERRAM(this)       (this->bufferram_index ^= 1)
+#define ONENAND_SET_PREV_BUFFERRAM(this)       (this->bufferram_index ^= 1)
 
 #define ONENAND_GET_SYS_CFG1(this)                                     \
        (this->read_word(this->base + ONENAND_REG_SYS_CFG1))
 #define ONENAND_SET_SYS_CFG1(v, this)                                  \
        (this->write_word(v, this->base + ONENAND_REG_SYS_CFG1))
 
+#define ONENAND_IS_DDP(this)                                           \
+       (this->device_id & ONENAND_DEVICE_IS_DDP)
+
 /* Check byte access in OneNAND */
 #define ONENAND_CHECK_BYTE_ACCESS(addr)                (addr & 0x1)