38 	struct xiphera_trng *trng = container_of(rng, struct xiphera_trng, rng);  in xiphera_trng_read()  local
43 		if (readl(trng->mem + STATUS_REG) == TRNG_NEW_RAND_AVAILABLE) {  in xiphera_trng_read()
44 			*(u32 *)buf = readl(trng->mem + RAND_REG);  in xiphera_trng_read()
49 			writel(HOST_TO_TRNG_READ, trng->mem + CONTROL_REG);  in xiphera_trng_read()
50 			writel(HOST_TO_TRNG_ENABLE, trng->mem + CONTROL_REG);  in xiphera_trng_read()
64 	struct xiphera_trng *trng;  in xiphera_trng_probe()  local
68 	trng = devm_kzalloc(dev, sizeof(*trng), GFP_KERNEL);  in xiphera_trng_probe()
69 	if (!trng)  in xiphera_trng_probe()
73 	trng->mem = devm_ioremap_resource(dev, res);  in xiphera_trng_probe()
74 	if (IS_ERR(trng->mem))  in xiphera_trng_probe()
75 		return PTR_ERR(trng->mem);  in xiphera_trng_probe()
81 	writel(HOST_TO_TRNG_RESET, trng->mem + CONTROL_REG);  in xiphera_trng_probe()
84 	if (readl(trng->mem + STATUS_REG) != TRNG_ACK_RESET) {  in xiphera_trng_probe()
90 		if (readl(trng->mem + STATUS_REG) != TRNG_ACK_RESET) {  in xiphera_trng_probe()
100 	writel(HOST_TO_TRNG_RELEASE_RESET, trng->mem + CONTROL_REG);  in xiphera_trng_probe()
101 	writel(HOST_TO_TRNG_ENABLE, trng->mem + CONTROL_REG);  in xiphera_trng_probe()
102 	writel(HOST_TO_TRNG_ZEROIZE, trng->mem + CONTROL_REG);  in xiphera_trng_probe()
105 	if (readl(trng->mem + STATUS_REG) != TRNG_SUCCESSFUL_STARTUP) {  in xiphera_trng_probe()
107 		if (readl(trng->mem + STATUS_REG) == TRNG_FAILED_STARTUP) {  in xiphera_trng_probe()
115 	writel(HOST_TO_TRNG_ACK_ZEROIZE, trng->mem + CONTROL_REG);  in xiphera_trng_probe()
117 	trng->rng.name = pdev->name;  in xiphera_trng_probe()
118 	trng->rng.read = xiphera_trng_read;  in xiphera_trng_probe()
119 	trng->rng.quality = 900;  in xiphera_trng_probe()
121 	ret = devm_hwrng_register(dev, &trng->rng);  in xiphera_trng_probe()
127 	platform_set_drvdata(pdev, trng);  in xiphera_trng_probe()