Difuse/u-boot
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

nand: fsl_upm: convert to updated MTD NAND infrastructure

Browse source 
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
This commit is contained in:
Anton Vorontsov 2008-06-12 11:10:21 -05:00 committed by Scott Wood
parent 300253306a
commit e1c3dbada3
2 changed files with 30 additions and 39 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

66
drivers/mtd/nand/fsl_upm.c
View file

@ -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, cmd);
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);
/*
* 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)

3
include/linux/mtd/fsl_upm.h
View file

@ -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);