diff options
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/cs553x_nand.c | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/drivers/mtd/nand/cs553x_nand.c b/drivers/mtd/nand/cs553x_nand.c index 19e1594421a..8dab69657b1 100644 --- a/drivers/mtd/nand/cs553x_nand.c +++ b/drivers/mtd/nand/cs553x_nand.c @@ -13,9 +13,12 @@ * Overview: * This is a device driver for the NAND flash controller found on * the AMD CS5535/CS5536 companion chipsets for the Geode processor. + * mtd-id for command line partitioning is cs553x_nand_cs[0-3] + * where 0-3 reflects the chip select for NAND. * */ +#include <linux/kernel.h> #include <linux/slab.h> #include <linux/init.h> #include <linux/module.h> @@ -244,6 +247,8 @@ static int __init cs553x_init_one(int cs, int mmio, unsigned long adr) goto out_ior; } + new_mtd->name = kasprintf(GFP_KERNEL, "cs553x_nand_cs%d", cs); + cs553x_mtd[cs] = new_mtd; goto out; @@ -272,12 +277,21 @@ static int is_geode(void) return 0; } + +#ifdef CONFIG_MTD_PARTITIONS +const char *part_probes[] = { "cmdlinepart", NULL }; +#endif + + static int __init cs553x_init(void) { int err = -ENXIO; int i; uint64_t val; + int mtd_parts_nb = 0; + struct mtd_partition *mtd_parts = NULL; + /* If the CPU isn't a Geode GX or LX, abort */ if (!is_geode()) return -ENXIO; @@ -290,7 +304,7 @@ static int __init cs553x_init(void) /* If it doesn't have the NAND controller enabled, abort */ rdmsrl(MSR_DIVIL_BALL_OPTS, val); - if (val & 1) { + if (val & PIN_OPT_IDE) { printk(KERN_INFO "CS553x NAND controller: Flash I/O not enabled in MSR_DIVIL_BALL_OPTS.\n"); return -ENXIO; } @@ -306,9 +320,19 @@ static int __init cs553x_init(void) do mtdconcat etc. if we want to. */ for (i = 0; i < NR_CS553X_CONTROLLERS; i++) { if (cs553x_mtd[i]) { - add_mtd_device(cs553x_mtd[i]); /* If any devices registered, return success. Else the last error. */ +#ifdef CONFIG_MTD_PARTITIONS + mtd_parts_nb = parse_mtd_partitions(cs553x_mtd[i], part_probes, &mtd_parts, 0); + if (mtd_parts_nb > 0) { + printk(KERN_NOTICE "Using command line partition definition\n"); + add_mtd_partitions(cs553x_mtd[i], mtd_parts, mtd_parts_nb); + } else { + add_mtd_device(cs553x_mtd[i]); + } +#else + add_mtd_device(cs553x_mtd[i]); +#endif err = 0; } } @@ -328,13 +352,14 @@ static void __exit cs553x_cleanup(void) void __iomem *mmio_base; if (!mtd) - break; + continue; this = cs553x_mtd[i]->priv; mmio_base = this->IO_ADDR_R; /* Release resources, unregister device */ nand_release(cs553x_mtd[i]); + kfree(cs553x_mtd[i]->name); cs553x_mtd[i] = NULL; /* unmap physical address */ |