diff options
Diffstat (limited to 'drivers/crypto/ccp/ccp-dev.c')
| -rw-r--r-- | drivers/crypto/ccp/ccp-dev.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/ccp-dev.c b/drivers/crypto/ccp/ccp-dev.c index 67cbb3e76888..83a0ce5661ad 100644 --- a/drivers/crypto/ccp/ccp-dev.c +++ b/drivers/crypto/ccp/ccp-dev.c @@ -539,8 +539,69 @@ bool ccp_queues_suspended(struct ccp_device *ccp) return ccp->cmd_q_count == suspended; } + +int ccp_dev_suspend(struct ccp_device *ccp, pm_message_t state) +{ + unsigned long flags; + unsigned int i; + + spin_lock_irqsave(&ccp->cmd_lock, flags); + + ccp->suspending = 1; + + /* Wake all the queue kthreads to prepare for suspend */ + for (i = 0; i < ccp->cmd_q_count; i++) + wake_up_process(ccp->cmd_q[i].kthread); + + spin_unlock_irqrestore(&ccp->cmd_lock, flags); + + /* Wait for all queue kthreads to say they're done */ + while (!ccp_queues_suspended(ccp)) + wait_event_interruptible(ccp->suspend_queue, + ccp_queues_suspended(ccp)); + + return 0; +} + +int ccp_dev_resume(struct ccp_device *ccp) +{ + unsigned long flags; + unsigned int i; + + spin_lock_irqsave(&ccp->cmd_lock, flags); + + ccp->suspending = 0; + + /* Wake up all the kthreads */ + for (i = 0; i < ccp->cmd_q_count; i++) { + ccp->cmd_q[i].suspended = 0; + wake_up_process(ccp->cmd_q[i].kthread); + } + + spin_unlock_irqrestore(&ccp->cmd_lock, flags); + + return 0; +} #endif +int ccp_dev_init(struct ccp_device *ccp) +{ + ccp->io_regs = ccp->io_map + ccp->vdata->offset; + + if (ccp->vdata->setup) + ccp->vdata->setup(ccp); + + return ccp->vdata->perform->init(ccp); +} + +void ccp_dev_destroy(struct ccp_device *ccp) +{ + if (!ccp) + return; + + ccp->vdata->perform->destroy(ccp); +} + static int __init ccp_mod_init(void) { #ifdef CONFIG_X86 |