static int ndfc_probe(struct platform_device *ofdev)
{
struct ndfc_controller *ndfc;
const __be32 *reg;
u32 ccr;
u32 cs;
int err, len;
/* Read the reg property to get the chip select */
reg = of_get_property(ofdev->dev.of_node, "reg", &len);
if (reg == NULL || len != 12) {
dev_err(&ofdev->dev, "unable read reg property (%d)\n", len);
return -ENOENT;
}
cs = be32_to_cpu(reg[0]);
if (cs >= NDFC_MAX_CS) {
dev_err(&ofdev->dev, "invalid CS number (%d)\n", cs);
return -EINVAL;
}
ndfc = &ndfc_ctrl[cs];
ndfc->chip_select = cs;
spin_lock_init(&ndfc->ndfc_control.lock);
init_waitqueue_head(&ndfc->ndfc_control.wq);
ndfc->ofdev = ofdev;
dev_set_drvdata(&ofdev->dev, ndfc);
ndfc->ndfcbase = of_iomap(ofdev->dev.of_node, 0);
if (!ndfc->ndfcbase) {
dev_err(&ofdev->dev, "failed to get memory\n");
return -EIO;
}
ccr = NDFC_CCR_BS(ndfc->chip_select);
/* It is ok if ccr does not exist - just default to 0 */
reg = of_get_property(ofdev->dev.of_node, "ccr", NULL);
if (reg)
ccr |= be32_to_cpup(reg);
out_be32(ndfc->ndfcbase + NDFC_CCR, ccr);
/* Set the bank settings if given */
reg = of_get_property(ofdev->dev.of_node, "bank-settings", NULL);
if (reg) {
int offset = NDFC_BCFG0 + (ndfc->chip_select << 2);
out_be32(ndfc->ndfcbase + offset, be32_to_cpup(reg));
}
err = ndfc_chip_init(ndfc, ofdev->dev.of_node);
if (err) {
iounmap(ndfc->ndfcbase);
return err;
}
return 0;
}
static int __devinit ndfc_probe(struct of_device *ofdev,
const struct of_device_id *match)
{
struct ndfc_controller *ndfc = &ndfc_ctrl;
const u32 *reg;
u32 ccr;
int err, len;
spin_lock_init(&ndfc->ndfc_control.lock);
init_waitqueue_head(&ndfc->ndfc_control.wq);
ndfc->ofdev = ofdev;
dev_set_drvdata(&ofdev->dev, ndfc);
reg = of_get_property(ofdev->node, "reg", &len);
if (reg == NULL || len != 12) {
dev_err(&ofdev->dev, "unable read reg property (%d)\n", len);
return -ENOENT;
}
ndfc->chip_select = reg[0];
ndfc->ndfcbase = of_iomap(ofdev->node, 0);
if (!ndfc->ndfcbase) {
dev_err(&ofdev->dev, "failed to get memory\n");
return -EIO;
}
ccr = NDFC_CCR_BS(ndfc->chip_select);
reg = of_get_property(ofdev->node, "ccr", NULL);
if (reg)
ccr |= *reg;
out_be32(ndfc->ndfcbase + NDFC_CCR, ccr);
reg = of_get_property(ofdev->node, "bank-settings", NULL);
if (reg) {
int offset = NDFC_BCFG0 + (ndfc->chip_select << 2);
out_be32(ndfc->ndfcbase + offset, *reg);
}
err = ndfc_chip_init(ndfc, ofdev->node);
if (err) {
iounmap(ndfc->ndfcbase);
return err;
}
return 0;
}
static int ndfc_chip_probe(struct platform_device *pdev)
{
struct platform_nand_chip *nc = pdev->dev.platform_data;
struct ndfc_chip_settings *settings = nc->priv;
struct ndfc_controller *ndfc = &ndfc_ctrl;
struct ndfc_nand_mtd *nandmtd;
if (nc->chip_offset >= NDFC_MAX_BANKS || nc->nr_chips > NDFC_MAX_BANKS)
return -EINVAL;
/* Set the bank settings */
__raw_writel(settings->bank_settings,
ndfc->ndfcbase + NDFC_BCFG0 + (nc->chip_offset << 2));
nandmtd = &ndfc_mtd[pdev->id];
if (nandmtd->pl_chip)
return -EBUSY;
nandmtd->pl_chip = nc;
ndfc_chip_init(nandmtd);
/* Scan for chips */
if (nand_scan(&nandmtd->mtd, nc->nr_chips)) {
nandmtd->pl_chip = NULL;
return -ENODEV;
}
#ifdef CONFIG_MTD_PARTITIONS
printk("Number of partitions %d\n", nc->nr_partitions);
if (nc->nr_partitions) {
/* Add the full device, so complete dumps can be made */
add_mtd_device(&nandmtd->mtd);
add_mtd_partitions(&nandmtd->mtd, nc->partitions,
nc->nr_partitions);
} else
#else
add_mtd_device(&nandmtd->mtd);
#endif
atomic_inc(&ndfc->childs_active);
return 0;
}