mtd/drivers/mtd/onenand onenand_base.c,1.12,1.13

[kyungmin.park at samsung.com]

Update of /home/cvs/mtd/drivers/mtd/onenand
In directory phoenix.infradead.org:/tmp/cvs-serv1314/drivers/mtd/onenand

Modified Files:
	onenand_base.c 
Log Message:
[MTD] OneNAND: handle byte access on BufferRAM


Index: onenand_base.c
===================================================================
RCS file: /home/cvs/mtd/drivers/mtd/onenand/onenand_base.c,v
retrieving revision 1.12
retrieving revision 1.13
diff -u -r1.12 -r1.13
--- onenand_base.c	21 Dec 2005 04:59:19 -0000	1.12
+++ onenand_base.c	11 Jan 2006 05:47:57 -0000	1.13
@@ -373,6 +373,17 @@
 
 	bufferram += onenand_bufferram_offset(mtd, area);
 
+	if (ONENAND_CHECK_BYTE_ACCESS(count)) {
+		unsigned short word;
+
+		/* Align with word(16-bit) size */
+		count--;
+
+		/* Read word and save byte */
+		word = this->read_word(bufferram + offset + count);
+		buffer[count] = (word & 0xff);
+	}
+
 	memcpy(buffer, bufferram + offset, count);
 
 	return 0;
@@ -400,6 +411,17 @@
 
 	this->mmcontrol(mtd, ONENAND_SYS_CFG1_SYNC_READ);
 
+	if (ONENAND_CHECK_BYTE_ACCESS(count)) {
+		unsigned short word;
+
+		/* Align with word(16-bit) size */
+		count--;
+
+		/* Read word and save byte */
+		word = this->read_word(bufferram + offset + count);
+		buffer[count] = (word & 0xff);
+	}
+
 	memcpy(buffer, bufferram + offset, count);
 
 	this->mmcontrol(mtd, 0);
@@ -427,6 +449,22 @@
 
 	bufferram += onenand_bufferram_offset(mtd, area);
 
+	if (ONENAND_CHECK_BYTE_ACCESS(count)) {
+		unsigned short word;
+		int byte_offset;
+
+		/* Align with word(16-bit) size */
+		count--;
+
+		/* Calculate byte access offset */
+		byte_offset = offset + count;
+
+		/* Read word and save byte */
+		word = this->read_word(bufferram + byte_offset);
+		word = (word & ~0xff) | buffer[count];
+		this->write_word(word, bufferram + byte_offset);
+	}
+
 	memcpy(bufferram + offset, buffer, count);
 
 	return 0;