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Commit 5946c4a5 authored by Mark A. Greer's avatar Mark A. Greer Committed by Herbert Xu
Browse files

crypto: omap-aes - Convert to use pm_runtime API 



Convert the omap-aes crypto driver to use the
pm_runtime API instead of the clk API.

CC: Kevin Hilman <khilman@deeprootsystems.com>
CC: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: default avatarMark A. Greer <mgreer@animalcreek.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 7219368b

drivers/crypto/omap-aes.c

+11 −18
Original line number Diff line number Diff line
@@ -19,10 +19,10 @@ 
#include <linux/init.h>

#include <linux/errno.h>

#include <linux/kernel.h>

#include <linux/clk.h>

#include <linux/platform_device.h>

#include <linux/scatterlist.h>

#include <linux/dma-mapping.h>

#include <linux/pm_runtime.h>

#include <linux/io.h>

#include <linux/crypto.h>

#include <linux/interrupt.h>
@@ -96,7 +96,6 @@ 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;
@@ -167,7 +166,7 @@ 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)) {

		dd->flags |= FLAGS_INIT;
@@ -518,7 +517,7 @@ 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);
@@ -813,26 +812,21 @@ 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);
@@ -862,8 +856,7 @@ static int omap_aes_probe(struct platform_device *pdev) 
	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;
@@ -891,7 +884,7 @@ 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;