diff options
| -rw-r--r-- | drivers/mtd/onenand/onenand_base.c | 43 | ||||
| -rw-r--r-- | drivers/mtd/onenand/samsung.c | 10 | ||||
| -rw-r--r-- | include/linux/mtd/onenand.h | 1 | ||||
| -rw-r--r-- | include/linux/mtd/samsung_onenand.h | 2 |
4 files changed, 49 insertions, 7 deletions
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 06f187fdd..0b375e6b7 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -2501,23 +2501,24 @@ out: } /** - * onenand_probe - [OneNAND Interface] Probe the OneNAND device + * onenand_chip_probe - [OneNAND Interface] Probe the OneNAND chip * @param mtd MTD device structure * * OneNAND detection method: * Compare the the values from command with ones from register */ -static int onenand_probe(struct mtd_info *mtd) +static int onenand_chip_probe(struct mtd_info *mtd) { struct onenand_chip *this = mtd->priv; - int bram_maf_id, bram_dev_id, maf_id, dev_id, ver_id; - int density; + int bram_maf_id, bram_dev_id, maf_id, dev_id; int syscfg; /* Save system configuration 1 */ syscfg = this->read_word(this->base + ONENAND_REG_SYS_CFG1); + /* Clear Sync. Burst Read mode to read BootRAM */ - this->write_word((syscfg & ~ONENAND_SYS_CFG1_SYNC_READ), this->base + ONENAND_REG_SYS_CFG1); + this->write_word((syscfg & ~ONENAND_SYS_CFG1_SYNC_READ), + this->base + ONENAND_REG_SYS_CFG1); /* Send the command for reading device ID from BootRAM */ this->write_word(ONENAND_CMD_READID, this->base + ONENAND_BOOTRAM); @@ -2542,13 +2543,38 @@ static int onenand_probe(struct mtd_info *mtd) /* Read manufacturer and device IDs from Register */ maf_id = this->read_word(this->base + ONENAND_REG_MANUFACTURER_ID); dev_id = this->read_word(this->base + ONENAND_REG_DEVICE_ID); - ver_id = this->read_word(this->base + ONENAND_REG_VERSION_ID); - this->technology = this->read_word(this->base + ONENAND_REG_TECHNOLOGY); /* Check OneNAND device */ if (maf_id != bram_maf_id || dev_id != bram_dev_id) return -ENXIO; + return 0; +} + +/** + * onenand_probe - [OneNAND Interface] Probe the OneNAND device + * @param mtd MTD device structure + * + * OneNAND detection method: + * Compare the the values from command with ones from register + */ +int onenand_probe(struct mtd_info *mtd) +{ + struct onenand_chip *this = mtd->priv; + int maf_id, dev_id, ver_id; + int density; + int ret; + + ret = this->chip_probe(mtd); + if (ret) + return ret; + + /* Read manufacturer and device IDs from Register */ + maf_id = this->read_word(this->base + ONENAND_REG_MANUFACTURER_ID); + dev_id = this->read_word(this->base + ONENAND_REG_DEVICE_ID); + ver_id = this->read_word(this->base + ONENAND_REG_VERSION_ID); + this->technology = this->read_word(this->base + ONENAND_REG_TECHNOLOGY); + /* Flash device information */ mtd->name = onenand_print_device_info(dev_id, ver_id); this->device_id = dev_id; @@ -2655,6 +2681,9 @@ int onenand_scan(struct mtd_info *mtd, int maxchips) if (!this->write_bufferram) this->write_bufferram = onenand_write_bufferram; + if (!this->chip_probe) + this->chip_probe = onenand_chip_probe; + if (!this->block_markbad) this->block_markbad = onenand_default_block_markbad; if (!this->scan_bbt) diff --git a/drivers/mtd/onenand/samsung.c b/drivers/mtd/onenand/samsung.c index ff5906459..c9d33ec82 100644 --- a/drivers/mtd/onenand/samsung.c +++ b/drivers/mtd/onenand/samsung.c @@ -589,6 +589,16 @@ static void s3c_set_width_regs(struct onenand_chip *this) } #endif +int s5pc110_chip_probe(struct mtd_info *mtd) +{ + return 0; +} + +int s5pc210_chip_probe(struct mtd_info *mtd) +{ + return 0; +} + void s3c_onenand_init(struct mtd_info *mtd) { struct onenand_chip *this = mtd->priv; diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index 546556263..dea42f41e 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -101,6 +101,7 @@ struct onenand_chip { size_t count); unsigned short (*read_word) (void __iomem *addr); void (*write_word) (unsigned short value, void __iomem *addr); + int (*chip_probe)(struct mtd_info *mtd); void (*mmcontrol) (struct mtd_info *mtd, int sync_read); int (*block_markbad)(struct mtd_info *mtd, loff_t ofs); int (*scan_bbt)(struct mtd_info *mtd); diff --git a/include/linux/mtd/samsung_onenand.h b/include/linux/mtd/samsung_onenand.h index 021fa27f7..ddb29bbee 100644 --- a/include/linux/mtd/samsung_onenand.h +++ b/include/linux/mtd/samsung_onenand.h @@ -127,5 +127,7 @@ struct samsung_onenand { /* common initialize function */ extern void s3c_onenand_init(struct mtd_info *); +extern int s5pc110_chip_probe(struct mtd_info *); +extern int s5pc210_chip_probe(struct mtd_info *); #endif |