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crypto: omap-des - use runtime_pm autosuspend for clock handling 

Convert the driver to use autosuspend for runtime_pm. This boosts the
performance, and optimizes the power consumption for the driver. By
default, the timeout value for autosuspend is set to one second.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tero Kristo 2017-05-24 10:35:25 +03:00 committed by Herbert Xu
parent a636fdce55
commit 418f2a8cf2
1 changed files with 8 additions and 2 deletions
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10
drivers/crypto/omap-des.c
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@ -78,6 +78,8 @@
#define FLAGS_INIT BIT(4)
#define FLAGS_BUSY BIT(6)
#define DEFAULT_AUTOSUSPEND_DELAY 1000
struct omap_des_ctx {
struct omap_des_dev *dd;
@ -506,8 +508,10 @@ static void omap_des_finish_req(struct omap_des_dev *dd, int err)
pr_debug("err: %d\n", err);
pm_runtime_put(dd->dev);
crypto_finalize_cipher_request(dd->engine, req, err);
pm_runtime_mark_last_busy(dd->dev);
pm_runtime_put_autosuspend(dd->dev);
}
static int omap_des_crypt_dma_stop(struct omap_des_dev *dd)
@ -1044,8 +1048,10 @@ static int omap_des_probe(struct platform_device *pdev)
}
dd->phys_base = res->start;
pm_runtime_use_autosuspend(dev);
pm_runtime_set_autosuspend_delay(dev, DEFAULT_AUTOSUSPEND_DELAY);
pm_runtime_enable(dev);
pm_runtime_irq_safe(dev);
err = pm_runtime_get_sync(dev);
if (err < 0) {
pm_runtime_put_noidle(dev);