diff options
Diffstat (limited to 'drivers/crypto/ccp/ccp-dev.c')
| -rw-r--r-- | drivers/crypto/ccp/ccp-dev.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/ccp-dev.c b/drivers/crypto/ccp/ccp-dev.c index dd71e673a109..5348512da643 100644 --- a/drivers/crypto/ccp/ccp-dev.c +++ b/drivers/crypto/ccp/ccp-dev.c @@ -150,6 +150,29 @@ int ccp_present(void) EXPORT_SYMBOL_GPL(ccp_present); /** + * ccp_version - get the version of the CCP device + * + * Returns the version from the first unit on the list; + * otherwise a zero if no CCP device is present + */ +unsigned int ccp_version(void) +{ + struct ccp_device *dp; + unsigned long flags; + int ret = 0; + + read_lock_irqsave(&ccp_unit_lock, flags); + if (!list_empty(&ccp_units)) { + dp = list_first_entry(&ccp_units, struct ccp_device, entry); + ret = dp->vdata->version; + } + read_unlock_irqrestore(&ccp_unit_lock, flags); + + return ret; +} +EXPORT_SYMBOL_GPL(ccp_version); + +/** * ccp_enqueue_cmd - queue an operation for processing by the CCP * * @cmd: ccp_cmd struct to be processed @@ -664,6 +687,10 @@ bool ccp_queues_suspended(struct ccp_device *ccp) } #endif +struct ccp_vdata ccpv3 = { + .version = CCP_VERSION(3, 0), +}; + static int __init ccp_mod_init(void) { #ifdef CONFIG_X86 |