3  * rockchip-rng.c Random Number Generator driver for the Rockchip
114 	int (*rk_rng_init)(struct hwrng *rng);
115 	int (*rk_rng_read)(struct hwrng *rng, void *buf, size_t max, bool wait);
120 	struct hwrng		rng;  member
127 static void rk_rng_writel(struct rk_rng *rng, u32 val, u32 offset)  in rk_rng_writel()  argument
129 	__raw_writel(val, rng->mem + offset);  in rk_rng_writel()
132 static u32 rk_rng_readl(struct rk_rng *rng, u32 offset)  in rk_rng_readl()  argument
134 	return __raw_readl(rng->mem + offset);  in rk_rng_readl()
137 static int rk_rng_init(struct hwrng *rng)  in rk_rng_init()  argument
140 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in rk_rng_init()
153 static void rk_rng_cleanup(struct hwrng *rng)  in rk_rng_cleanup()  argument
155 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in rk_rng_cleanup()
161 static int rk_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait)  in rk_rng_read()  argument
165 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in rk_rng_read()
178 		read_len = rk_rng->soc_data->rk_rng_read(rng, buf + ret,  in rk_rng_read()
193 static void rk_rng_read_regs(struct rk_rng *rng, u32 offset, void *buf,  in rk_rng_read_regs()  argument
199 		*(u32 *)(buf + i) = be32_to_cpu(rk_rng_readl(rng, offset + i));  in rk_rng_read_regs()
202 static int crypto_v1_read(struct hwrng *rng, void *buf, size_t max, bool wait)  in crypto_v1_read()  argument
206 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in crypto_v1_read()
237 static int crypto_v2_read(struct hwrng *rng, void *buf, size_t max, bool wait)  in crypto_v2_read()  argument
241 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in crypto_v2_read()
273 static int trng_v1_init(struct hwrng *rng)  in trng_v1_init()  argument
278 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in trng_v1_init()
322 static int trng_v1_read(struct hwrng *rng, void *buf, size_t max, bool wait)  in trng_v1_read()  argument
326 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in trng_v1_read()
338 	 * Estimated at 150M RNG module frequency, it takes 6.7 microseconds.  in trng_v1_read()
366 static int rkrng_init(struct hwrng *rng)  in rkrng_init()  argument
368 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in rkrng_init()
379 static int rkrng_read(struct hwrng *rng, void *buf, size_t max, bool wait)  in rkrng_read()  argument
381 	struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);  in rkrng_read()
438 		.compatible = "rockchip,cryptov1-rng",
442 		.compatible = "rockchip,cryptov2-rng",
475 	rk_rng->rng.name    = "rockchip";  in rk_rng_probe()
477 	rk_rng->rng.init    = rk_rng_init;  in rk_rng_probe()
478 	rk_rng->rng.cleanup = rk_rng_cleanup,  in rk_rng_probe()
480 	rk_rng->rng.read    = rk_rng_read;  in rk_rng_probe()
481 	rk_rng->rng.quality = 999;  in rk_rng_probe()
489 	 * With old dtsi configurations, the RNG base was equal to the crypto  in rk_rng_probe()
491 	 * RNG base = CRYPTO base + RNG offset  in rk_rng_probe()
492 	 * (Since RK356X, RNG module is no longer belongs to CRYPTO module)  in rk_rng_probe()
495 	 * |---cipher---|---rng---|---pka---|, and RNG base is real RNG base.  in rk_rng_probe()
496 	 * RNG driver and CRYPTO driver could be enabled at the same time.  in rk_rng_probe()
514 	ret = devm_hwrng_register(&pdev->dev, &rk_rng->rng);  in rk_rng_probe()
524 		ret = rk_rng->soc_data->rk_rng_init(&rk_rng->rng);  in rk_rng_probe()
538 	rk_rng_cleanup(&rk_rng->rng);  in rk_rng_runtime_suspend()
547 	return rk_rng_init(&rk_rng->rng);  in rk_rng_runtime_resume()
561 		.name	= "rockchip-rng",