[PATCH 1/1] Changeable NAND_MAX_PAGESIZE and NAND_MAX_OOBSIZE
Eirik Aanonsen
eaa at wprmedical.com
Wed Jan 7 11:49:21 EST 2009
Is it feasible to get acceptance for implementing the two values
NAND_MAX_PAGESIZE and max NAND_MAX_OOBSIZE for the nand driver as a more
dynamic value?
The suggestion here is probably the easiest one and could be wrong for
all I know. Please don't chop my head off for trying. I am not
experienced in submitting patches
Signed-off-by: Eirik Aanonsen <eaa at wprmedical.com>
---
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index fcbdf87..68c96c6 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -387,4 +387,26 @@ config MTD_NAND_FSL_UPM
Enables support for NAND Flash chips wired onto Freescale
PowerPC
processor localbus with User-Programmable Machine support.
+comment "WARNING: NAND expert options"
+
+config MTD_NAND_MAX_PAGESIZE
+ int "NAND_MAX_PAGESIZE for nand page buffer. Size in KiB"
+ depends on MTD_NAND
+ default "2048"
+ help
+ This allows you to configure the max page size on the nand
driver.
+ Allows you to change the reserved memory for use in the nand
driver.
+ WARNING: This value should not be subject to change without
+ extensive knowledge
+
+config MTD_NAND_MAX_OOBSIZE
+ int "NAND_MAX_OOBSIZE for nand oob buffer. Size in KiB"
+ depends on MTD_NAND
+ default "64"
+ help
+ This allows you to configure the max oob size on the nand
driver.
+ Allows you to change the reserved memory for use in the nand
driver.
+ WARNING: This value should not be subject to change without
+ extensive knowledge
+
endif # MTD_NAND
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 53ea3dc..cb5ce99 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -45,8 +45,16 @@ extern void nand_wait_ready(struct mtd_info *mtd);
* is supported now. If you add a chip with bigger oobsize/page
* adjust this accordingly.
*/
+#ifdef MTD_NAND_MAX_OOBSIZE
+#define NAND_MAX_OOBSIZE CONFIG_MTD_NAND_MAX_OOBSIZE
+#else
#define NAND_MAX_OOBSIZE 64
+#endif
+#ifdef MTD_NAND_MAX_PAGESIZE
+#define NAND_MAX_PAGESIZE CONFIG_MTD_NAND_MAX_PAGESIZE
+#else
#define NAND_MAX_PAGESIZE 2048
+#endif
/*
* Constants for hardware specific CLE/ALE/NCE function
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