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path: root/drivers/mtd/nand/cafe_nand.c
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Diffstat (limited to 'drivers/mtd/nand/cafe_nand.c')
-rw-r--r--drivers/mtd/nand/cafe_nand.c29
1 files changed, 20 insertions, 9 deletions
diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c
index 05f6ec9f5aa..cff969d05d4 100644
--- a/drivers/mtd/nand/cafe_nand.c
+++ b/drivers/mtd/nand/cafe_nand.c
@@ -47,6 +47,9 @@
#define CAFE_GLOBAL_IRQ_MASK 0x300c
#define CAFE_NAND_RESET 0x3034
+/* Missing from the datasheet: bit 19 of CTRL1 sets CE0 vs. CE1 */
+#define CTRL1_CHIPSELECT (1<<19)
+
struct cafe_priv {
struct nand_chip nand;
struct pci_dev *pdev;
@@ -194,8 +197,8 @@ static void cafe_nand_cmdfunc(struct mtd_info *mtd, unsigned command,
cafe->data_pos = cafe->datalen = 0;
- /* Set command valid bit */
- ctl1 = 0x80000000 | command;
+ /* Set command valid bit, mask in the chip select bit */
+ ctl1 = 0x80000000 | command | (cafe->ctl1 & CTRL1_CHIPSELECT);
/* Set RD or WR bits as appropriate */
if (command == NAND_CMD_READID || command == NAND_CMD_STATUS) {
@@ -308,8 +311,16 @@ static void cafe_nand_cmdfunc(struct mtd_info *mtd, unsigned command,
static void cafe_select_chip(struct mtd_info *mtd, int chipnr)
{
- //struct cafe_priv *cafe = mtd->priv;
- // cafe_dev_dbg(&cafe->pdev->dev, "select_chip %d\n", chipnr);
+ struct cafe_priv *cafe = mtd->priv;
+
+ cafe_dev_dbg(&cafe->pdev->dev, "select_chip %d\n", chipnr);
+
+ /* Mask the appropriate bit into the stored value of ctl1
+ which will be used by cafe_nand_cmdfunc() */
+ if (chipnr)
+ cafe->ctl1 |= CTRL1_CHIPSELECT;
+ else
+ cafe->ctl1 &= ~CTRL1_CHIPSELECT;
}
static int cafe_nand_interrupt(int irq, void *id)
@@ -453,7 +464,7 @@ static uint8_t cafe_mirror_pattern_512[] = { 0xBC };
static struct nand_bbt_descr cafe_bbt_main_descr_2048 = {
.options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
- | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP,
+ | NAND_BBT_2BIT | NAND_BBT_VERSION,
.offs = 14,
.len = 4,
.veroffs = 18,
@@ -463,7 +474,7 @@ static struct nand_bbt_descr cafe_bbt_main_descr_2048 = {
static struct nand_bbt_descr cafe_bbt_mirror_descr_2048 = {
.options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
- | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP,
+ | NAND_BBT_2BIT | NAND_BBT_VERSION,
.offs = 14,
.len = 4,
.veroffs = 18,
@@ -479,7 +490,7 @@ static struct nand_ecclayout cafe_oobinfo_512 = {
static struct nand_bbt_descr cafe_bbt_main_descr_512 = {
.options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
- | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP,
+ | NAND_BBT_2BIT | NAND_BBT_VERSION,
.offs = 14,
.len = 1,
.veroffs = 15,
@@ -489,7 +500,7 @@ static struct nand_bbt_descr cafe_bbt_main_descr_512 = {
static struct nand_bbt_descr cafe_bbt_mirror_descr_512 = {
.options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
- | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP,
+ | NAND_BBT_2BIT | NAND_BBT_VERSION,
.offs = 14,
.len = 1,
.veroffs = 15,
@@ -731,7 +742,7 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
cafe_readl(cafe, GLOBAL_CTRL), cafe_readl(cafe, GLOBAL_IRQ_MASK));
/* Scan to find existence of the device */
- if (nand_scan_ident(mtd, 1)) {
+ if (nand_scan_ident(mtd, 2)) {
err = -ENXIO;
goto out_irq;
}