52 struct rk_rng {  struct
60 static void rk_rng_write_ctl(struct rk_rng *rng, u32 val, u32 mask)  in rk_rng_write_ctl()  argument
67 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in rk_rng_init()  local
71 	ret = clk_bulk_prepare_enable(rk_rng->clk_num, rk_rng->clk_bulks);  in rk_rng_init()
73 		dev_err((struct device *) rk_rng->rng.priv,  in rk_rng_init()
79 	writel(RK_RNG_SAMPLE_CNT, rk_rng->base + TRNG_RNG_SAMPLE_CNT);  in rk_rng_init()
82 	rk_rng_write_ctl(rk_rng, TRNG_RNG_CTL_LEN_256_BIT |  in rk_rng_init()
92 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in rk_rng_cleanup()  local
95 	rk_rng_write_ctl(rk_rng, 0, TRNG_RNG_CTL_MASK);  in rk_rng_cleanup()
98 	clk_bulk_disable_unprepare(rk_rng->clk_num, rk_rng->clk_bulks);  in rk_rng_cleanup()
103 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in rk_rng_read()  local
108 	ret = pm_runtime_resume_and_get((struct device *) rk_rng->rng.priv);  in rk_rng_read()
113 	rk_rng_write_ctl(rk_rng, TRNG_RNG_CTL_START, TRNG_RNG_CTL_START);  in rk_rng_read()
115 	ret = readl_poll_timeout(rk_rng->base + TRNG_RNG_CTL, reg,  in rk_rng_read()
123 	memcpy_fromio(buf, rk_rng->base + TRNG_RNG_DOUT, to_read);  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()
135 	struct rk_rng *rk_rng;  in rk_rng_probe()  local
138 	rk_rng = devm_kzalloc(dev, sizeof(*rk_rng), GFP_KERNEL);  in rk_rng_probe()
139 	if (!rk_rng)  in rk_rng_probe()
142 	rk_rng->base = devm_platform_ioremap_resource(pdev, 0);  in rk_rng_probe()
143 	if (IS_ERR(rk_rng->base))  in rk_rng_probe()
144 		return PTR_ERR(rk_rng->base);  in rk_rng_probe()
146 	rk_rng->clk_num = devm_clk_bulk_get_all(dev, &rk_rng->clk_bulks);  in rk_rng_probe()
147 	if (rk_rng->clk_num < 0)  in rk_rng_probe()
148 		return dev_err_probe(dev, rk_rng->clk_num,  in rk_rng_probe()
159 	platform_set_drvdata(pdev, rk_rng);  in rk_rng_probe()
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()
185 	struct rk_rng *rk_rng = dev_get_drvdata(dev);  in rk_rng_runtime_suspend()  local
187 	rk_rng_cleanup(&rk_rng->rng);  in rk_rng_runtime_suspend()
194 	struct rk_rng *rk_rng = dev_get_drvdata(dev);  in rk_rng_runtime_resume()  local
196 	return rk_rng_init(&rk_rng->rng);  in rk_rng_runtime_resume()