61 	struct hisi_trng *trng;  member
67 static void hisi_trng_set_seed(struct hisi_trng *trng, const u8 *seed)  in hisi_trng_set_seed()  argument
79 		writel(val, trng->base + SW_DRBG_SEED(seed_reg));  in hisi_trng_set_seed()
87 	struct hisi_trng *trng = ctx->trng;  in hisi_trng_seed()  local
92 		pr_err("slen(%u) is not matched with trng(%d)\n", slen,  in hisi_trng_seed()
97 	writel(0x0, trng->base + SW_DRBG_BLOCKS);  in hisi_trng_seed()
98 	hisi_trng_set_seed(trng, seed);  in hisi_trng_seed()
101 	       trng->base + SW_DRBG_BLOCKS);  in hisi_trng_seed()
102 	writel(0x1, trng->base + SW_DRBG_INIT);  in hisi_trng_seed()
104 	ret = readl_relaxed_poll_timeout(trng->base + SW_DRBG_STATUS,  in hisi_trng_seed()
107 		pr_err("fail to init trng(%d)\n", ret);  in hisi_trng_seed()
116 	struct hisi_trng *trng = ctx->trng;  in hisi_trng_generate()  local
130 		ret = readl_relaxed_poll_timeout(trng->base + SW_DRBG_STATUS,  in hisi_trng_generate()
138 			data[i] = readl(trng->base + SW_DRBG_DATA(i));  in hisi_trng_generate()
148 		writel(0x1, trng->base + SW_DRBG_GEN);  in hisi_trng_generate()
157 	struct hisi_trng *trng;  in hisi_trng_init()  local
161 	list_for_each_entry(trng, &trng_devices.list, list) {  in hisi_trng_init()
162 		if (!trng->is_used) {  in hisi_trng_init()
163 			trng->is_used = true;  in hisi_trng_init()
164 			ctx->trng = trng;  in hisi_trng_init()
179 	ctx->trng->is_used = false;  in hisi_trng_exit()
185 	struct hisi_trng *trng;  in hisi_trng_read()  local
190 	trng = container_of(rng, struct hisi_trng, rng);  in hisi_trng_read()
193 		ret = readl_poll_timeout(trng->base + HISI_TRNG_REG, val,  in hisi_trng_read()
229 static void hisi_trng_add_to_list(struct hisi_trng *trng)  in hisi_trng_add_to_list()  argument
232 	list_add_tail(&trng->list, &trng_devices.list);  in hisi_trng_add_to_list()
236 static int hisi_trng_del_from_list(struct hisi_trng *trng)  in hisi_trng_del_from_list()  argument
241 	if (!trng->is_used) {  in hisi_trng_del_from_list()
242 		list_del(&trng->list);  in hisi_trng_del_from_list()
252 	struct hisi_trng *trng;  in hisi_trng_probe()  local
255 	trng = devm_kzalloc(&pdev->dev, sizeof(*trng), GFP_KERNEL);  in hisi_trng_probe()
256 	if (!trng)  in hisi_trng_probe()
259 	platform_set_drvdata(pdev, trng);  in hisi_trng_probe()
261 	trng->base = devm_platform_ioremap_resource(pdev, 0);  in hisi_trng_probe()
262 	if (IS_ERR(trng->base))  in hisi_trng_probe()
263 		return PTR_ERR(trng->base);  in hisi_trng_probe()
265 	trng->is_used = false;  in hisi_trng_probe()
266 	trng->ver = readl(trng->base + HISI_TRNG_VERSION);  in hisi_trng_probe()
273 	hisi_trng_add_to_list(trng);  in hisi_trng_probe()
274 	if (trng->ver != HISI_TRNG_VER_V1 &&  in hisi_trng_probe()
285 	trng->rng.name = pdev->name;  in hisi_trng_probe()
286 	trng->rng.read = hisi_trng_read;  in hisi_trng_probe()
287 	trng->rng.quality = HISI_TRNG_QUALITY;  in hisi_trng_probe()
288 	ret = devm_hwrng_register(&pdev->dev, &trng->rng);  in hisi_trng_probe()
297 	if (trng->ver != HISI_TRNG_VER_V1 &&  in hisi_trng_probe()
302 	hisi_trng_del_from_list(trng);  in hisi_trng_probe()
308 	struct hisi_trng *trng = platform_get_drvdata(pdev);  in hisi_trng_remove()  local
311 	while (hisi_trng_del_from_list(trng))  in hisi_trng_remove()
314 	if (trng->ver != HISI_TRNG_VER_V1 &&  in hisi_trng_remove()
329 		.name	= "hisi-trng-v2",