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mtd: rawnand: Add a helper to clarify the interface configuration

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[ Upstream commit 961965c45c ]

Name it nand_interface_is_sdr() which will make even more sense when
nand_interface_is_nvddr() will be introduced.

Use it when relevant.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210505213750.257417-2-miquel.raynal@bootlin.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Miquel Raynal
2021-05-05 23:37:29 +02:00
committed by Greg Kroah-Hartman
parent ae1e2bc7bf
commit c91e5215a4
2 changed files with 11 additions and 2 deletions
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2
drivers/mtd/nand/raw/atmel/nand-controller.c
View File

@@ -1246,7 +1246,7 @@ static int atmel_smc_nand_prepare_smcconf(struct atmel_nand *nand,
nc = to_nand_controller(nand->base.controller);
/* DDR interface not supported. */
if (conf->type != NAND_SDR_IFACE)
if (!nand_interface_is_sdr(conf))
return -ENOTSUPP;
/*

11
include/linux/mtd/rawnand.h
View File

@@ -499,6 +499,15 @@ struct nand_interface_config {
} timings;
};
/**
* nand_interface_is_sdr - get the interface type
* @conf: The data interface
*/
static bool nand_interface_is_sdr(const struct nand_interface_config *conf)
{
return conf->type == NAND_SDR_IFACE;
}
/**
* nand_get_sdr_timings - get SDR timing from data interface
* @conf: The data interface
@@ -506,7 +515,7 @@ struct nand_interface_config {
static inline const struct nand_sdr_timings *
nand_get_sdr_timings(const struct nand_interface_config *conf)
{
if (conf->type != NAND_SDR_IFACE)
if (!nand_interface_is_sdr(conf))
return ERR_PTR(-EINVAL);
return &conf->timings.sdr;