[MTD] OneNAND: Reduce Double Density Package (DDP) operations
- DDP code clean-up
- Reduce block & bufferram operations in DDP
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index f775a7a..a99b294 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -150,6 +150,9 @@
#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)
diff --git a/include/linux/mtd/onenand_regs.h b/include/linux/mtd/onenand_regs.h
index e31c8f5..5b46cb5 100644
--- a/include/linux/mtd/onenand_regs.h
+++ b/include/linux/mtd/onenand_regs.h
@@ -80,9 +80,11 @@
#define ONENAND_VERSION_PROCESS_SHIFT (8)
/*
- * Start Address 1 F100h (R/W)
+ * Start Address 1 F100h (R/W) & Start Address 2 F101h (R/W)
*/
#define ONENAND_DDP_SHIFT (15)
+#define ONENAND_DDP_CHIP0 (0)
+#define ONENAND_DDP_CHIP1 (1 << ONENAND_DDP_SHIFT)
/*
* Start Address 8 F107h (R/W)