58 	struct exynos_trng_dev *trng;  in exynos_trng_do_read()  local
63 	trng = (struct exynos_trng_dev *)rng->priv;  in exynos_trng_do_read()
65 	writel_relaxed(max * 8, trng->mem + EXYNOS_TRNG_FIFO_CTRL);  in exynos_trng_do_read()
66 	val = readl_poll_timeout(trng->mem + EXYNOS_TRNG_FIFO_CTRL, val,  in exynos_trng_do_read()
71 	memcpy_fromio(data, trng->mem + EXYNOS_TRNG_FIFO_0, max);  in exynos_trng_do_read()
78 	struct exynos_trng_dev *trng = (struct exynos_trng_dev *)rng->priv;  in exynos_trng_init()  local
82 	sss_rate = clk_get_rate(trng->clk);  in exynos_trng_init()
90 		dev_err(trng->dev, "clock divider too large: %d", val);  in exynos_trng_init()
94 	writel_relaxed(val, trng->mem + EXYNOS_TRNG_CLKDIV);  in exynos_trng_init()
98 	writel_relaxed(val, trng->mem + EXYNOS_TRNG_CTRL);  in exynos_trng_init()
104 	writel_relaxed(0, trng->mem + EXYNOS_TRNG_POST_CTRL);  in exynos_trng_init()
111 	struct exynos_trng_dev *trng;  in exynos_trng_probe()  local
114 	trng = devm_kzalloc(&pdev->dev, sizeof(*trng), GFP_KERNEL);  in exynos_trng_probe()
115 	if (!trng)  in exynos_trng_probe()
118 	trng->rng.name = devm_kstrdup(&pdev->dev, dev_name(&pdev->dev),  in exynos_trng_probe()
120 	if (!trng->rng.name)  in exynos_trng_probe()
123 	trng->rng.init = exynos_trng_init;  in exynos_trng_probe()
124 	trng->rng.read = exynos_trng_do_read;  in exynos_trng_probe()
125 	trng->rng.priv = (unsigned long) trng;  in exynos_trng_probe()
127 	platform_set_drvdata(pdev, trng);  in exynos_trng_probe()
128 	trng->dev = &pdev->dev;  in exynos_trng_probe()
130 	trng->mem = devm_platform_ioremap_resource(pdev, 0);  in exynos_trng_probe()
131 	if (IS_ERR(trng->mem))  in exynos_trng_probe()
132 		return PTR_ERR(trng->mem);  in exynos_trng_probe()
141 	trng->clk = devm_clk_get(&pdev->dev, "secss");  in exynos_trng_probe()
142 	if (IS_ERR(trng->clk)) {  in exynos_trng_probe()
143 		ret = PTR_ERR(trng->clk);  in exynos_trng_probe()
148 	ret = clk_prepare_enable(trng->clk);  in exynos_trng_probe()
154 	ret = devm_hwrng_register(&pdev->dev, &trng->rng);  in exynos_trng_probe()
165 	clk_disable_unprepare(trng->clk);  in exynos_trng_probe()
178 	struct exynos_trng_dev *trng =  platform_get_drvdata(pdev);  in exynos_trng_remove()  local
180 	clk_disable_unprepare(trng->clk);  in exynos_trng_remove()