diff options
| author | Mark A. Greer <mgreer@animalcreek.com> | 2013-01-08 19:57:40 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2013-01-20 00:16:41 +0100 |
| commit | 5946c4a5e7707d255faf430969d344ad98430b69 (patch) | |
| tree | cc2efc002b1d1e4e48f4930f65bba5336202db5b /drivers/crypto | |
| parent | crypto: omap-aes - Don't reset controller for every operation (diff) | |
| download | linux-5946c4a5e7707d255faf430969d344ad98430b69.tar.xz linux-5946c4a5e7707d255faf430969d344ad98430b69.zip | |
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: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/omap-aes.c | 29 |
1 files changed, 11 insertions, 18 deletions
diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index 33cd78305461..c2298521388c 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -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 @@ 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; @@ -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; |