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

* git://git.infradead.org/mtd-2.6: (84 commits)
  [JFFS2] debug.h: include <linux/sched.h> for current->pid
  [MTD] OneNAND: Handle DDP chip boundary during read-while-load
  [MTD] OneNAND: return ecc error code only when 2-bit ecc occurs
  [MTD] OneNAND: Implement read-while-load
  [MTD] OneNAND: fix onenand_wait bug in read ecc error
  [MTD] OneNAND: release CPU in cycles
  [MTD] OneNAND: add subpage write support
  [MTD] OneNAND: fix onenand_wait bug
  [JFFS2] use the ref_offset macro
  [JFFS2] Reschedule in loops
  [JFFS2] Fix error-path leak in summary scan
  [JFFS2] add cond_resched() when garbage collecting deletion dirent
  [MTD] Nuke IVR leftovers
  [MTD] OneNAND: fix oob handling in recent oob patch
  [MTD] Fix ssfdc blksize typo
  [JFFS2] replace kmalloc+memset with kzalloc
  [MTD] Fix SSFDC build for variable blocksize.
  [MTD] ESB2ROM uses PCI
  [MTD] of_device-based physmap driver
  [MTD] Support combined RedBoot FIS directory and configuration area
  ...

5 files changed, 36 insertions, 15 deletions

diff --git a/include/linux/mtd/blktrans.h b/include/linux/mtd/blktrans.h
index 72fc68c5ee96..9a6e2f953cba 100644
--- a/include/linux/mtd/blktrans.h
+++ b/include/linux/mtd/blktrans.h
@@ -24,7 +24,6 @@ struct mtd_blktrans_dev {
         struct mtd_info *mtd;
         struct mutex lock;
         int devnum;
-        int blksize;
         unsigned long size;
         int readonly;
         void *blkcore_priv; /* gendisk in 2.5, devfs_handle in 2.4 */
@@ -36,6 +35,8 @@ struct mtd_blktrans_ops {
         char *name;
         int major;
         int part_bits;
+        int blksize;
+        int blkshift;
 
         /* Access functions */
         int (*readsect)(struct mtd_blktrans_dev *dev,
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 94a443d45258..d644e57703ad 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -23,7 +23,7 @@
 
 #define MTD_CHAR_MAJOR 90
 #define MTD_BLOCK_MAJOR 31
-#define MAX_MTD_DEVICES 16
+#define MAX_MTD_DEVICES 32
 
 #define MTD_ERASE_PENDING       0x01
 #define MTD_ERASING             0x02
@@ -75,15 +75,12 @@ typedef enum {
  * struct mtd_oob_ops - oob operation operands
  * @mode:       operation mode
  *
- * @len:        number of bytes to write/read. When a data buffer is given
- *              (datbuf != NULL) this is the number of data bytes. When
- *              no data buffer is available this is the number of oob bytes.
+ * @len:        number of data bytes to write/read
  *
- * @retlen:     number of bytes written/read. When a data buffer is given
- *              (datbuf != NULL) this is the number of data bytes. When
- *              no data buffer is available this is the number of oob bytes.
+ * @retlen:     number of data bytes written/read
  *
- * @ooblen:     number of oob bytes per page
+ * @ooblen:     number of oob bytes to write/read
+ * @oobretlen:  number of oob bytes written/read
  * @ooboffs:    offset of oob data in the oob area (only relevant when
  *              mode = MTD_OOB_PLACE)
  * @datbuf:     data buffer - if NULL only oob data are read/written
@@ -94,6 +91,7 @@ struct mtd_oob_ops {
         size_t          len;
         size_t          retlen;
         size_t          ooblen;
+        size_t          oobretlen;
         uint32_t        ooboffs;
         uint8_t         *datbuf;
         uint8_t         *oobbuf;
@@ -202,11 +200,20 @@ struct mtd_info {
 
         /* ECC status information */
         struct mtd_ecc_stats ecc_stats;
+        /* Subpage shift (NAND) */
+        int subpage_sft;
 
         void *priv;
 
         struct module *owner;
         int usecount;
+
+        /* If the driver is something smart, like UBI, it may need to maintain
+         * its own reference counting. The below functions are only for driver.
+         * The driver may register its callbacks. These callbacks are not
+         * supposed to be called by MTD users */
+        int (*get_device) (struct mtd_info *mtd);
+        void (*put_device) (struct mtd_info *mtd);
 };
 
 
@@ -216,6 +223,7 @@ extern int add_mtd_device(struct mtd_info *mtd);
 extern int del_mtd_device (struct mtd_info *mtd);
 
 extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num);
+extern struct mtd_info *get_mtd_device_nm(const char *name);
 
 extern void put_mtd_device(struct mtd_info *mtd);
 
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 8b3ef4187219..2071b02f0526 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -166,6 +166,9 @@ typedef enum {
  * for all large page devices, as they do not support
  * autoincrement.*/
 #define NAND_NO_READRDY         0x00000100
+/* Chip does not allow subpage writes */
+#define NAND_NO_SUBPAGE_WRITE   0x00000200
+
 
 /* Options valid for Samsung large page devices */
 #define NAND_SAMSUNG_LP_OPTIONS \
@@ -193,6 +196,9 @@ typedef enum {
 /* Nand scan has allocated controller struct */
 #define NAND_CONTROLLER_ALLOC   0x80000000
 
+/* Cell info constants */
+#define NAND_CI_CHIPNR_MSK      0x03
+#define NAND_CI_CELLTYPE_MSK    0x0C
 
 /*
  * nand_state_t - chip states
@@ -286,9 +292,7 @@ struct nand_ecc_ctrl {
  * struct nand_buffers - buffer structure for read/write
  * @ecccalc:    buffer for calculated ecc
  * @ecccode:    buffer for ecc read from flash
- * @oobwbuf:    buffer for write oob data
  * @databuf:    buffer for data - dynamically sized
- * @oobrbuf:    buffer to read oob data
  *
  * Do not change the order of buffers. databuf and oobrbuf must be in
  * consecutive order.
@@ -296,9 +300,7 @@ struct nand_ecc_ctrl {
 struct nand_buffers {
         uint8_t ecccalc[NAND_MAX_OOBSIZE];
         uint8_t ecccode[NAND_MAX_OOBSIZE];
-        uint8_t oobwbuf[NAND_MAX_OOBSIZE];
-        uint8_t databuf[NAND_MAX_PAGESIZE];
-        uint8_t oobrbuf[NAND_MAX_OOBSIZE];
+        uint8_t databuf[NAND_MAX_PAGESIZE + NAND_MAX_OOBSIZE];
 };
 
 /**
@@ -345,6 +347,7 @@ struct nand_buffers {
  * @chipsize:           [INTERN] the size of one chip for multichip arrays
  * @pagemask:           [INTERN] page number mask = number of (pages / chip) - 1
  * @pagebuf:            [INTERN] holds the pagenumber which is currently in data_buf
+ * @subpagesize:        [INTERN] holds the subpagesize
  * @ecclayout:          [REPLACEABLE] the default ecc placement scheme
  * @bbt:                [INTERN] bad block table pointer
  * @bbt_td:             [REPLACEABLE] bad block table descriptor for flash lookup
@@ -392,6 +395,8 @@ struct nand_chip {
         unsigned long   chipsize;
         int             pagemask;
         int             pagebuf;
+        int             subpagesize;
+        uint8_t         cellinfo;
         int             badblockpos;
 
         nand_state_t    state;
diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index 6f045b586e76..f775a7af3890 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -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,
@@ -88,6 +88,7 @@ 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
@@ -120,11 +121,15 @@ 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;
@@ -138,6 +143,7 @@ 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))
diff --git a/include/linux/mtd/onenand_regs.h b/include/linux/mtd/onenand_regs.h
index 9e409fe6ded6..e31c8f5d4271 100644
--- a/include/linux/mtd/onenand_regs.h
+++ b/include/linux/mtd/onenand_regs.h
@@ -179,6 +179,7 @@
  * ECC Status Reigser FF00h (R)
  */
 #define ONENAND_ECC_1BIT                (1 << 0)
+#define ONENAND_ECC_1BIT_ALL            (0x5555)
 #define ONENAND_ECC_2BIT                (1 << 1)
 #define ONENAND_ECC_2BIT_ALL            (0xAAAA)