3  * rockchip-rng.c True Random Number Generator driver for Rockchip RK3568 SoC
53 	struct hwrng rng;  member
60 static void rk_rng_write_ctl(struct rk_rng *rng, u32 val, u32 mask)  in rk_rng_write_ctl()  argument
62 	writel((mask << 16) | val, rng->base + TRNG_RNG_CTL);  in rk_rng_write_ctl()
65 static int rk_rng_init(struct hwrng *rng)  in rk_rng_init()  argument
67 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in rk_rng_init()
73 		dev_err((struct device *) rk_rng->rng.priv,  in rk_rng_init()
90 static void rk_rng_cleanup(struct hwrng *rng)  in rk_rng_cleanup()  argument
92 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in rk_rng_cleanup()
101 static int rk_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait)  in rk_rng_read()  argument
103 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in rk_rng_read()
108 	ret = pm_runtime_resume_and_get((struct device *) rk_rng->rng.priv);  in rk_rng_read()
125 	pm_runtime_mark_last_busy((struct device *) rk_rng->rng.priv);  in rk_rng_read()
126 	pm_runtime_put_sync_autosuspend((struct device *) rk_rng->rng.priv);  in rk_rng_read()
161 	rk_rng->rng.name = dev_driver_string(dev);  in rk_rng_probe()
163 		rk_rng->rng.init = rk_rng_init;  in rk_rng_probe()
164 		rk_rng->rng.cleanup = rk_rng_cleanup;  in rk_rng_probe()
166 	rk_rng->rng.read = rk_rng_read;  in rk_rng_probe()
167 	rk_rng->rng.priv = (unsigned long) dev;  in rk_rng_probe()
168 	rk_rng->rng.quality = 900;  in rk_rng_probe()
176 	ret = devm_hwrng_register(dev, &rk_rng->rng);  in rk_rng_probe()
187 	rk_rng_cleanup(&rk_rng->rng);  in rk_rng_runtime_suspend()
196 	return rk_rng_init(&rk_rng->rng);  in rk_rng_runtime_resume()
207 	{ .compatible = "rockchip,rk3568-rng", },
215 		.name	= "rockchip-rng",