diff options
| author |   Tero Kristo <t-kristo@ti.com> | 2017-05-24 10:35:25 +0300 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2017-06-10 12:04:14 +0800 |
| commit | 418f2a8cf2ebb817a2b98cb4829c13d374e06932 (patch) | |
| tree | 8c7b7b202273f2fba98375a01178df20859ada11 /drivers/crypto/omap-des.c | |
| parent | crypto: omap-des - add check for weak keys (diff) | |
| download | linux-dev-418f2a8cf2ebb817a2b98cb4829c13d374e06932.tar.xz linux-dev-418f2a8cf2ebb817a2b98cb4829c13d374e06932.zip | |
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>
Diffstat (limited to 'drivers/crypto/omap-des.c')
| -rw-r--r-- | drivers/crypto/omap-des.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c index 0d68f77ea53a..3783dcf6bc37 100644 --- a/drivers/crypto/omap-des.c +++ b/drivers/crypto/omap-des.c @@ -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); |