diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/nand/nand_timings.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/mtd/nand/nand_timings.c b/drivers/mtd/nand/nand_timings.c index 878fe0d5342c..7441d68b78d5 100644 --- a/drivers/mtd/nand/nand_timings.c +++ b/drivers/mtd/nand/nand_timings.c @@ -269,3 +269,32 @@ const struct nand_sdr_timings *onfi_async_timing_mode_to_sdr_timings(int mode) return &onfi_sdr_timings[mode].timings.sdr; } EXPORT_SYMBOL(onfi_async_timing_mode_to_sdr_timings); + +/** + * onfi_init_data_interface - [NAND Interface] Initialize a data interface from + * given ONFI mode + * @iface: The data interface to be initialized + * @mode: The ONFI timing mode + */ +int onfi_init_data_interface(struct nand_chip *chip, + struct nand_data_interface *iface, + enum nand_data_interface_type type, + int timing_mode) +{ + if (type != NAND_SDR_IFACE) + return -EINVAL; + + if (timing_mode < 0 || timing_mode >= ARRAY_SIZE(onfi_sdr_timings)) + return -EINVAL; + + *iface = onfi_sdr_timings[timing_mode]; + + /* + * TODO: initialize timings that cannot be deduced from timing mode: + * tR, tPROG, tCCS, ... + * These information are part of the ONFI parameter page. + */ + + return 0; +} +EXPORT_SYMBOL(onfi_init_data_interface); |