struct ingenic_trng {
void __iomem *base;
- struct clk *clk;
struct hwrng rng;
};
static int ingenic_trng_probe(struct platform_device *pdev)
{
struct ingenic_trng *trng;
+ struct clk *clk;
int ret;
trng = devm_kzalloc(&pdev->dev, sizeof(*trng), GFP_KERNEL);
return PTR_ERR(trng->base);
}
- trng->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(trng->clk)) {
- pr_crit("%s: Cannot get DTRNG clock\n", __func__);
- return PTR_ERR(trng->clk);
- }
-
- ret = clk_prepare_enable(trng->clk);
- if (ret) {
- pr_crit("%s: Unable to enable DTRNG clock\n", __func__);
- return ret;
+ clk = devm_clk_get_enabled(&pdev->dev, NULL);
+ if (IS_ERR(clk)) {
+ pr_crit("%s: Cannot get and enable DTRNG clock\n", __func__);
+ return PTR_ERR(clk);
}
trng->rng.name = pdev->name;
ret = hwrng_register(&trng->rng);
if (ret) {
dev_err(&pdev->dev, "Failed to register hwrng\n");
- goto err_unprepare_clk;
+ return ret;
}
platform_set_drvdata(pdev, trng);
dev_info(&pdev->dev, "Ingenic DTRNG driver registered\n");
return 0;
-
-err_unprepare_clk:
- clk_disable_unprepare(trng->clk);
- return ret;
}
static int ingenic_trng_remove(struct platform_device *pdev)
ctrl &= ~CFG_GEN_EN;
writel(ctrl, trng->base + TRNG_REG_CFG_OFFSET);
- clk_disable_unprepare(trng->clk);
-
return 0;
}