Lines Matching refs:rng
4 // Based on msm-rng.c and downstream driver
6 #include <crypto/internal/rng.h>
38 struct qcom_rng *rng;
43 static int qcom_rng_read(struct qcom_rng *rng, u8 *data, unsigned int max)
51 ret = readl_poll_timeout(rng->base + PRNG_STATUS, val,
57 val = readl_relaxed(rng->base + PRNG_DATA_OUT);
80 struct qcom_rng *rng = ctx->rng;
83 ret = clk_prepare_enable(rng->clk);
87 mutex_lock(&rng->lock);
89 ret = qcom_rng_read(rng, dstn, dlen);
91 mutex_unlock(&rng->lock);
92 clk_disable_unprepare(rng->clk);
103 static int qcom_rng_enable(struct qcom_rng *rng)
108 ret = clk_prepare_enable(rng->clk);
113 val = readl_relaxed(rng->base + PRNG_CONFIG);
117 val = readl_relaxed(rng->base + PRNG_LFSR_CFG);
120 writel(val, rng->base + PRNG_LFSR_CFG);
122 val = readl_relaxed(rng->base + PRNG_CONFIG);
124 writel(val, rng->base + PRNG_CONFIG);
127 clk_disable_unprepare(rng->clk);
136 ctx->rng = qcom_rng_dev;
138 if (!ctx->rng->skip_init)
139 return qcom_rng_enable(ctx->rng);
150 .cra_driver_name = "qcom-rng",
161 struct qcom_rng *rng;
164 rng = devm_kzalloc(&pdev->dev, sizeof(*rng), GFP_KERNEL);
165 if (!rng)
168 platform_set_drvdata(pdev, rng);
169 mutex_init(&rng->lock);
171 rng->base = devm_platform_ioremap_resource(pdev, 0);
172 if (IS_ERR(rng->base))
173 return PTR_ERR(rng->base);
177 rng->clk = devm_clk_get(&pdev->dev, "core");
178 if (IS_ERR(rng->clk))
179 return PTR_ERR(rng->clk);
183 rng->skip_init = (unsigned long)device_get_match_data(&pdev->dev);
185 qcom_rng_dev = rng;
188 dev_err(&pdev->dev, "Register crypto rng failed: %d\n", ret);