From mboxrd@z Thu Jan 1 00:00:00 1970 From: s.hauer@pengutronix.de (Sascha Hauer) Date: Fri, 9 Sep 2016 14:05:08 +0200 Subject: [PATCH 5/9] mtd: nand: Expose data interface for ONFI mode 0 In-Reply-To: <1473422712-12359-1-git-send-email-s.hauer@pengutronix.de> References: <1473422712-12359-1-git-send-email-s.hauer@pengutronix.de> Message-ID: <1473422712-12359-6-git-send-email-s.hauer@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The nand layer will need ONFI mode 0 to use it as timing mode before and right after reset. Signed-off-by: Sascha Hauer --- drivers/mtd/nand/nand_timings.c | 11 +++++++++++ include/linux/mtd/nand.h | 2 ++ 2 files changed, 13 insertions(+) diff --git a/drivers/mtd/nand/nand_timings.c b/drivers/mtd/nand/nand_timings.c index ece4ff2..5217915 100644 --- a/drivers/mtd/nand/nand_timings.c +++ b/drivers/mtd/nand/nand_timings.c @@ -285,3 +285,14 @@ int onfi_init_data_interface(struct nand_data_interface *iface, int mode) return 0; } + +/** + * nand_get_default_data_interface - [NAND Interface] Retrieve NAND + * data interface for mode 0. This is used as default timing after + * reset. + */ +const struct nand_data_interface *nand_get_default_data_interface(void) +{ + return &onfi_sdr_timings[0]; +} +EXPORT_SYMBOL(nand_get_default_data_interface); diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 0044fac..56787da 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -1143,6 +1143,8 @@ static inline int jedec_feature(struct nand_chip *chip) /* get timing characteristics from ONFI timing mode. */ const struct nand_sdr_timings *onfi_async_timing_mode_to_sdr_timings(int mode); +/* get data interface from ONFI timing mode 0, used after reset. */ +const struct nand_data_interface *nand_get_default_data_interface(void); int nand_check_erased_ecc_chunk(void *data, int datalen, void *ecc, int ecclen, -- 2.8.1