diff options
Diffstat (limited to 'drivers/crypto/qcom-rng.c')
| -rw-r--r-- | drivers/crypto/qcom-rng.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/crypto/qcom-rng.c b/drivers/crypto/qcom-rng.c index e54249ccc009..37b3b4c5ec28 100644 --- a/drivers/crypto/qcom-rng.c +++ b/drivers/crypto/qcom-rng.c @@ -7,6 +7,7 @@ #include <linux/acpi.h> #include <linux/clk.h> #include <linux/crypto.h> +#include <linux/interconnect.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> @@ -30,6 +31,7 @@ struct qcom_rng { void __iomem *base; struct clk *clk; unsigned int skip_init; + struct icc_path *path; }; struct qcom_rng_ctx { @@ -75,6 +77,8 @@ static int qcom_rng_generate(struct crypto_rng *tfm, struct qcom_rng *rng = ctx->rng; int ret; + icc_set_bw(rng->path, 0, kBps_to_icc(800)); + ret = clk_prepare_enable(rng->clk); if (ret) return ret; @@ -86,6 +90,8 @@ static int qcom_rng_generate(struct crypto_rng *tfm, mutex_unlock(&rng->lock); clk_disable_unprepare(rng->clk); + icc_set_bw(rng->path, 0, 0); + return 0; } @@ -164,6 +170,10 @@ static int qcom_rng_probe(struct platform_device *pdev) platform_set_drvdata(pdev, rng); mutex_init(&rng->lock); + rng->path = of_icc_get(&pdev->dev, "cpu"); + if (IS_ERR(rng->path)) + return PTR_ERR(rng->path); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); rng->base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(rng->base)) |