33 #define to_mtk_rng(p)	container_of(p, struct mtk_rng, rng)
38 	struct hwrng rng;  member
41 static int mtk_rng_init(struct hwrng *rng)  in mtk_rng_init()  argument
43 	struct mtk_rng *priv = to_mtk_rng(rng);  in mtk_rng_init()
58 static void mtk_rng_cleanup(struct hwrng *rng)  in mtk_rng_cleanup()  argument
60 	struct mtk_rng *priv = to_mtk_rng(rng);  in mtk_rng_cleanup()
70 static bool mtk_rng_wait_ready(struct hwrng *rng, bool wait)  in mtk_rng_wait_ready()  argument
72 	struct mtk_rng *priv = to_mtk_rng(rng);  in mtk_rng_wait_ready()
83 static int mtk_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait)  in mtk_rng_read()  argument
85 	struct mtk_rng *priv = to_mtk_rng(rng);  in mtk_rng_read()
88 	pm_runtime_get_sync((struct device *)priv->rng.priv);  in mtk_rng_read()
91 		if (!mtk_rng_wait_ready(rng, wait))  in mtk_rng_read()
100 	pm_runtime_mark_last_busy((struct device *)priv->rng.priv);  in mtk_rng_read()
101 	pm_runtime_put_sync_autosuspend((struct device *)priv->rng.priv);  in mtk_rng_read()
115 	priv->rng.name = pdev->name;  in mtk_rng_probe()
117 	priv->rng.init = mtk_rng_init;  in mtk_rng_probe()
118 	priv->rng.cleanup = mtk_rng_cleanup;  in mtk_rng_probe()
120 	priv->rng.read = mtk_rng_read;  in mtk_rng_probe()
121 	priv->rng.priv = (unsigned long)&pdev->dev;  in mtk_rng_probe()
122 	priv->rng.quality = 900;  in mtk_rng_probe()
124 	priv->clk = devm_clk_get(&pdev->dev, "rng");  in mtk_rng_probe()
135 	ret = devm_hwrng_register(&pdev->dev, &priv->rng);  in mtk_rng_probe()
137 		dev_err(&pdev->dev, "failed to register rng device: %d\n",  in mtk_rng_probe()
147 	dev_info(&pdev->dev, "registered RNG driver\n");  in mtk_rng_probe()
157 	mtk_rng_cleanup(&priv->rng);  in mtk_rng_runtime_suspend()
166 	return mtk_rng_init(&priv->rng);  in mtk_rng_runtime_resume()
182 	{ .compatible = "mediatek,mt7986-rng" },
183 	{ .compatible = "mediatek,mt7623-rng" },