diff options
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/omap-sham.c | 28 |
1 files changed, 11 insertions, 17 deletions
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index 2df7a54fc3b9..777eb9fdd096 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -22,12 +22,12 @@ #include <linux/errno.h> #include <linux/interrupt.h> #include <linux/kernel.h> -#include <linux/clk.h> #include <linux/irq.h> #include <linux/io.h> #include <linux/platform_device.h> #include <linux/scatterlist.h> #include <linux/dma-mapping.h> +#include <linux/pm_runtime.h> #include <linux/delay.h> #include <linux/crypto.h> #include <linux/cryptohash.h> @@ -140,7 +140,6 @@ struct omap_sham_dev { struct device *dev; void __iomem *io_base; int irq; - struct clk *iclk; spinlock_t lock; int err; int dma; @@ -237,7 +236,7 @@ static void omap_sham_copy_ready_hash(struct ahash_request *req) static int omap_sham_hw_init(struct omap_sham_dev *dd) { - clk_enable(dd->iclk); + pm_runtime_get_sync(dd->dev); if (!test_bit(FLAGS_INIT, &dd->flags)) { omap_sham_write_mask(dd, SHA_REG_MASK, @@ -652,7 +651,8 @@ static void omap_sham_finish_req(struct ahash_request *req, int err) /* atomic operation is not needed here */ dd->flags &= ~(BIT(FLAGS_BUSY) | BIT(FLAGS_FINAL) | BIT(FLAGS_CPU) | BIT(FLAGS_DMA_READY) | BIT(FLAGS_OUTPUT_READY)); - clk_disable(dd->iclk); + + pm_runtime_put_sync(dd->dev); if (req->base.complete) req->base.complete(&req->base, err); @@ -1197,14 +1197,6 @@ static int __devinit omap_sham_probe(struct platform_device *pdev) if (err) goto dma_err; - /* 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 clk_err; - } - dd->io_base = ioremap(dd->phys_base, SZ_4K); if (!dd->io_base) { dev_err(dev, "can't ioremap\n"); @@ -1212,11 +1204,14 @@ static int __devinit omap_sham_probe(struct platform_device *pdev) goto io_err; } - clk_enable(dd->iclk); + pm_runtime_enable(dev); + pm_runtime_get_sync(dev); + dev_info(dev, "hw accel on OMAP rev %u.%u\n", (omap_sham_read(dd, SHA_REG_REV) & SHA_REG_REV_MAJOR) >> 4, omap_sham_read(dd, SHA_REG_REV) & SHA_REG_REV_MINOR); - clk_disable(dd->iclk); + + pm_runtime_put_sync(&pdev->dev); spin_lock(&sham.lock); list_add_tail(&dd->list, &sham.dev_list); @@ -1234,9 +1229,8 @@ err_algs: for (j = 0; j < i; j++) crypto_unregister_ahash(&algs[j]); iounmap(dd->io_base); + pm_runtime_disable(dev); io_err: - clk_put(dd->iclk); -clk_err: omap_sham_dma_cleanup(dd); dma_err: if (dd->irq >= 0) @@ -1265,7 +1259,7 @@ static int __devexit omap_sham_remove(struct platform_device *pdev) crypto_unregister_ahash(&algs[i]); tasklet_kill(&dd->done_task); iounmap(dd->io_base); - clk_put(dd->iclk); + pm_runtime_disable(&pdev->dev); omap_sham_dma_cleanup(dd); if (dd->irq >= 0) free_irq(dd->irq, dd); |