From e1c3dbada349992875934575c97b328ab2cb33ca Mon Sep 17 00:00:00 2001
From: Anton Vorontsov <avorontsov@ru.mvista.com>
Date: Thu, 12 Jun 2008 11:10:21 -0500
Subject: [PATCH] nand: fsl_upm: convert to updated MTD NAND infrastructure
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
---
drivers/mtd/nand/fsl_upm.c | 68 +++++++++++++++----------------------
include/linux/mtd/fsl_upm.h | 3 ++
2 files changed, 31 insertions(+), 40 deletions(-)
diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c
index 67ae9c8d5b..e651903040 100644
--- a/drivers/mtd/nand/fsl_upm.c
+++ b/drivers/mtd/nand/fsl_upm.c
@@ -20,8 +20,6 @@
#include <linux/mtd/fsl_upm.h>
#include <nand.h>
-static int fsl_upm_in_pattern;
-
static void fsl_upm_start_pattern(struct fsl_upm *upm, u32 pat_offset)
{
clrsetbits_be32(upm->mxmr, MxMR_MAD_MSK, MxMR_OP_RUNP | pat_offset);
@@ -51,49 +49,38 @@ static void fsl_upm_run_pattern(struct fsl_upm *upm, int width, u32 cmd)
}
}
-static void nand_hwcontrol (struct mtd_info *mtd, int cmd)
+static void fun_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
{
struct nand_chip *chip = mtd->priv;
struct fsl_upm_nand *fun = chip->priv;
- switch (cmd) {
- case NAND_CTL_SETCLE:
- fsl_upm_start_pattern(&fun->upm, fun->upm_cmd_offset);
- fsl_upm_in_pattern++;
- break;
- case NAND_CTL_SETALE:
- fsl_upm_start_pattern(&fun->upm, fun->upm_addr_offset);
- fsl_upm_in_pattern++;
- break;
- case NAND_CTL_CLRCLE:
- case NAND_CTL_CLRALE:
+ if (!(ctrl & fun->last_ctrl)) {
fsl_upm_end_pattern(&fun->upm);
- fsl_upm_in_pattern--;
- break;
+
+ if (cmd == NAND_CMD_NONE)
+ return;
+
+ fun->last_ctrl = ctrl & (NAND_ALE | NAND_CLE);
}
-}
-static void nand_write_byte(struct mtd_info *mtd, u_char byte)
-{
- struct nand_chip *chip = mtd->priv;
+ if (ctrl & NAND_CTRL_CHANGE) {
+ if (ctrl & NAND_ALE)
+ fsl_upm_start_pattern(&fun->upm, fun->upm_addr_offset);
+ else if (ctrl & NAND_CLE)
+ fsl_upm_start_pattern(&fun->upm, fun->upm_cmd_offset);
+ }
- if (fsl_upm_in_pattern) {
- struct fsl_upm_nand *fun = chip->priv;
-
- fsl_upm_run_pattern(&fun->upm, fun->width, byte);
-
- /*
- * Some boards/chips needs this. At least on MPC8360E-RDK we
- * need it. Probably weird chip, because I don't see any need
- * for this on MPC8555E + Samsung K9F1G08U0A. Usually here are
- * 0-2 unexpected busy states per block read.
- */
- if (fun->wait_pattern) {
- while (!fun->dev_ready())
- debug("unexpected busy state\n");
- }
- } else {
- out_8(chip->IO_ADDR_W, byte);
+ fsl_upm_run_pattern(&fun->upm, fun->width, cmd);
+
+ /*
+ * Some boards/chips needs this. At least on MPC8360E-RDK we
+ * need it. Probably weird chip, because I don't see any need
+ * for this on MPC8555E + Samsung K9F1G08U0A. Usually here are
+ * 0-2 unexpected busy states per block read.
+ */
+ if (fun->wait_pattern) {
+ while (!fun->dev_ready())
+ debug("unexpected busy state\n");
}
}
@@ -148,13 +135,14 @@ int fsl_upm_nand_init(struct nand_chip *chip, struct fsl_upm_nand *fun)
if (fun->width != 8 && fun->width != 16 && fun->width != 32)
return -ENOSYS;
+ fun->last_ctrl = NAND_CLE;
+
chip->priv = fun;
chip->chip_delay = fun->chip_delay;
- chip->eccmode = NAND_ECC_SOFT;
- chip->hwcontrol = nand_hwcontrol;
+ chip->ecc.mode = NAND_ECC_SOFT;
+ chip->cmd_ctrl = fun_cmd_ctrl;
chip->read_byte = nand_read_byte;
chip->read_buf = nand_read_buf;
- chip->write_byte = nand_write_byte;
chip->write_buf = nand_write_buf;
chip->verify_buf = nand_verify_buf;
if (fun->dev_ready)
diff --git a/include/linux/mtd/fsl_upm.h b/include/linux/mtd/fsl_upm.h
index 49fd8a60ff..638a4e468d 100644
--- a/include/linux/mtd/fsl_upm.h
+++ b/include/linux/mtd/fsl_upm.h
@@ -31,6 +31,9 @@ struct fsl_upm_nand {
int wait_pattern;
int (*dev_ready)(void);
int chip_delay;
+
+ /* no need to fill */
+ int last_ctrl;
};
extern int fsl_upm_nand_init(struct nand_chip *chip, struct fsl_upm_nand *fun);
--
2.39.5