42 	struct atmel_trng *trng = container_of(rng, struct atmel_trng, rng);  in atmel_trng_read()  local
46 	if (readl(trng->base + TRNG_ISR) & 1) {  in atmel_trng_read()
47 		*data = readl(trng->base + TRNG_ODATA);  in atmel_trng_read()
54 		readl(trng->base + TRNG_ISR);  in atmel_trng_read()
60 static void atmel_trng_enable(struct atmel_trng *trng)  in atmel_trng_enable()  argument
62 	writel(TRNG_KEY | 1, trng->base + TRNG_CR);  in atmel_trng_enable()
65 static void atmel_trng_disable(struct atmel_trng *trng)  in atmel_trng_disable()  argument
67 	writel(TRNG_KEY, trng->base + TRNG_CR);  in atmel_trng_disable()
72 	struct atmel_trng *trng;  in atmel_trng_probe()  local
76 	trng = devm_kzalloc(&pdev->dev, sizeof(*trng), GFP_KERNEL);  in atmel_trng_probe()
77 	if (!trng)  in atmel_trng_probe()
80 	trng->base = devm_platform_ioremap_resource(pdev, 0);  in atmel_trng_probe()
81 	if (IS_ERR(trng->base))  in atmel_trng_probe()
82 		return PTR_ERR(trng->base);  in atmel_trng_probe()
84 	trng->clk = devm_clk_get(&pdev->dev, NULL);  in atmel_trng_probe()
85 	if (IS_ERR(trng->clk))  in atmel_trng_probe()
86 		return PTR_ERR(trng->clk);  in atmel_trng_probe()
92 		unsigned long rate = clk_get_rate(trng->clk);  in atmel_trng_probe()
96 			writel(TRNG_HALFR, trng->base + TRNG_MR);  in atmel_trng_probe()
99 	ret = clk_prepare_enable(trng->clk);  in atmel_trng_probe()
103 	atmel_trng_enable(trng);  in atmel_trng_probe()
104 	trng->rng.name = pdev->name;  in atmel_trng_probe()
105 	trng->rng.read = atmel_trng_read;  in atmel_trng_probe()
107 	ret = devm_hwrng_register(&pdev->dev, &trng->rng);  in atmel_trng_probe()
111 	platform_set_drvdata(pdev, trng);  in atmel_trng_probe()
116 	clk_disable_unprepare(trng->clk);  in atmel_trng_probe()
122 	struct atmel_trng *trng = platform_get_drvdata(pdev);  in atmel_trng_remove()  local
125 	atmel_trng_disable(trng);  in atmel_trng_remove()
126 	clk_disable_unprepare(trng->clk);  in atmel_trng_remove()
134 	struct atmel_trng *trng = dev_get_drvdata(dev);  in atmel_trng_suspend()  local
136 	atmel_trng_disable(trng);  in atmel_trng_suspend()
137 	clk_disable_unprepare(trng->clk);  in atmel_trng_suspend()
144 	struct atmel_trng *trng = dev_get_drvdata(dev);  in atmel_trng_resume()  local
147 	ret = clk_prepare_enable(trng->clk);  in atmel_trng_resume()
151 	atmel_trng_enable(trng);  in atmel_trng_resume()
172 		.compatible = "atmel,at91sam9g45-trng",
175 		.compatible = "microchip,sam9x60-trng",
187 		.name	= "atmel-trng",