From: "Mark A. Greer" Subject: [PATCH 5/7] crypto: omap-aes: Convert to use pm_runtime API Date: Mon, 19 Nov 2012 12:03:50 -0700 Message-ID: <1353351832-6685-6-git-send-email-mgreer@animalcreek.com> References: <1353351832-6685-1-git-send-email-mgreer@animalcreek.com> Cc: linux-crypto@vger.kernel.org, herbert@gondor.apana.org.au, davem@davemloft.net, dmitry.kasatkin@intel.com, rmk+kernel@arm.linux.org.uk, paul@pwsan.com, khilman@deeprootsystems.com, "Mark A. Greer" To: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org Return-path: In-Reply-To: <1353351832-6685-1-git-send-email-mgreer@animalcreek.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org From: "Mark A. Greer" Convert the omap-aes crypto driver to use the pm_runtime API instead of the clk API. CC: Kevin Hilman CC: Paul Walmsley CC: Dmitry Kasatkin Signed-off-by: Mark A. Greer --- drivers/crypto/omap-aes.c | 29 +++++++++++------------------ 1 file changed, 11 insertions(+), 18 deletions(-) diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index 628c3cc..75b842d 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -19,10 +19,10 @@ #include #include #include -#include #include #include #include +#include #include #include #include @@ -97,7 +97,6 @@ struct omap_aes_dev { struct list_head list; unsigned long phys_base; void __iomem *io_base; - struct clk *iclk; struct omap_aes_ctx *ctx; struct device *dev; unsigned long flags; @@ -181,7 +180,7 @@ static int omap_aes_hw_init(struct omap_aes_dev *dd) * It may be long delays between requests. * Device might go to off mode to save power. */ - clk_enable(dd->iclk); + pm_runtime_get_sync(dd->dev); if (!(dd->flags & FLAGS_INIT)) { /* is it necessary to reset before every operation? */ @@ -546,7 +545,7 @@ static void omap_aes_finish_req(struct omap_aes_dev *dd, int err) pr_debug("err: %d\n", err); - clk_disable(dd->iclk); + pm_runtime_put_sync(dd->dev); dd->flags &= ~FLAGS_BUSY; req->base.complete(&req->base, err); @@ -841,26 +840,21 @@ static int omap_aes_probe(struct platform_device *pdev) else dd->dma_in = res->start; - /* Initializing the clock */ - dd->iclk = clk_get(dev, "ick"); - if (IS_ERR(dd->iclk)) { - dev_err(dev, "clock intialization failed.\n"); - err = PTR_ERR(dd->iclk); - goto err_res; - } - dd->io_base = ioremap(dd->phys_base, SZ_4K); if (!dd->io_base) { dev_err(dev, "can't ioremap\n"); err = -ENOMEM; - goto err_io; + goto err_res; } - clk_enable(dd->iclk); + pm_runtime_enable(dev); + pm_runtime_get_sync(dev); + reg = omap_aes_read(dd, AES_REG_REV); dev_info(dev, "OMAP AES hw accel rev: %u.%u\n", (reg & AES_REG_REV_MAJOR) >> 4, reg & AES_REG_REV_MINOR); - clk_disable(dd->iclk); + + pm_runtime_put_sync(dev); tasklet_init(&dd->done_task, omap_aes_done_task, (unsigned long)dd); tasklet_init(&dd->queue_task, omap_aes_queue_task, (unsigned long)dd); @@ -892,8 +886,7 @@ err_dma: tasklet_kill(&dd->done_task); tasklet_kill(&dd->queue_task); iounmap(dd->io_base); -err_io: - clk_put(dd->iclk); + pm_runtime_disable(dev); err_res: kfree(dd); dd = NULL; @@ -921,7 +914,7 @@ static int omap_aes_remove(struct platform_device *pdev) tasklet_kill(&dd->queue_task); omap_aes_dma_cleanup(dd); iounmap(dd->io_base); - clk_put(dd->iclk); + pm_runtime_disable(dd->dev); kfree(dd); dd = NULL; -- 1.7.12