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crypto: talitos - Add a feature to tag SEC1

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We add a new feature in the features field, to mark compatible
"fsl,sec1.0"
We also define a helper function called has_ftr_sec1() to help
functions quickly determine if they are running on SEC1 or SEC2+.
When only SEC1 or SEC2 is compiled in, has_ftr_sec1() return
trivial corresponding value. If both are compiled in, feature
field is checked.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
LEROY Christophe 2015-04-17 16:32:05 +02:00 committed by Herbert Xu
parent 5b841a65dc
commit 2159088849
2 changed files with 20 additions and 0 deletions
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3
drivers/crypto/talitos.c
View file

@ -2709,6 +2709,9 @@ static int talitos_probe(struct platform_device *ofdev)
TALITOS_FTR_SHA224_HWINIT |
TALITOS_FTR_HMAC_OK;
if (of_device_is_compatible(np, "fsl,sec1.0"))
priv->features |= TALITOS_FTR_SEC1;
priv->chan = kzalloc(sizeof(struct talitos_channel) *
priv->num_channels, GFP_KERNEL);
if (!priv->chan) {

17
drivers/crypto/talitos.h
View file

@ -156,6 +156,23 @@ extern int talitos_submit(struct device *dev, int ch, struct talitos_desc *desc,
#define TALITOS_FTR_HW_AUTH_CHECK 0x00000002
#define TALITOS_FTR_SHA224_HWINIT 0x00000004
#define TALITOS_FTR_HMAC_OK 0x00000008
#define TALITOS_FTR_SEC1 0x00000010
/*
* If both CONFIG_CRYPTO_DEV_TALITOS1 and CONFIG_CRYPTO_DEV_TALITOS2 are
* defined, we check the features which are set according to the device tree.
* Otherwise, we answer true or false directly
*/
static inline bool has_ftr_sec1(struct talitos_private *priv)
{
#if defined(CONFIG_CRYPTO_DEV_TALITOS1) && defined(CONFIG_CRYPTO_DEV_TALITOS2)
return priv->features & TALITOS_FTR_SEC1 ? true : false;
#elif defined(CONFIG_CRYPTO_DEV_TALITOS1)
return true;
#else
return false;
#endif
}
/*
* TALITOS_xxx_LO addresses point to the low data bits (32-63) of the register