From 418f2a8cf2ebb817a2b98cb4829c13d374e06932 Mon Sep 17 00:00:00 2001 From: Tero Kristo Date: Wed, 24 May 2017 10:35:25 +0300 Subject: [PATCH] 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 Signed-off-by: Herbert Xu --- drivers/crypto/omap-des.c | 10 ++++++++-- 1 file 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); -- 2.20.1