* Add hook to NAND erase and implement nand_wait function.
Patch by Mike Rapoport, 01 Nov 2005
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
diff --git a/drivers/nand/nand_base.c b/drivers/nand/nand_base.c
index a7ab8c2..9ec5af9 100644
--- a/drivers/nand/nand_base.c
+++ b/drivers/nand/nand_base.c
@@ -189,7 +189,11 @@
spin_unlock (&this->chip_lock);
}
#else
-#define nand_release_device(mtd) do {} while(0)
+static void nand_release_device (struct mtd_info *mtd)
+{
+ struct nand_chip *this = mtd->priv;
+ this->select_chip(mtd, -1); /* De-select the NAND device */
+}
#endif
/**
@@ -831,8 +835,34 @@
#else
static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
{
- /* TODO */
- return 0;
+ unsigned long timeo;
+
+ if (state == FL_ERASING)
+ timeo = CFG_HZ * 400;
+ else
+ timeo = CFG_HZ * 20;
+
+ if ((state == FL_ERASING) && (this->options & NAND_IS_AND))
+ this->cmdfunc(mtd, NAND_CMD_STATUS_MULTI, -1, -1);
+ else
+ this->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
+
+ reset_timer_masked();
+
+ while (1) {
+ if (get_timer_masked() > timeo)
+ return 0;
+
+ if (this->dev_ready) {
+ if (this->dev_ready(mtd))
+ break;
+ } else {
+ if (this->read_byte(mtd) & NAND_STATUS_READY)
+ break;
+ }
+ }
+
+ return this->read_byte(mtd);
}
#endif