Lines Matching full:trng

85 	struct exynos_trng_dev *trng = (struct exynos_trng_dev *)rng->priv;
89 	writel_relaxed(max * 8, trng->mem + EXYNOS_TRNG_FIFO_CTRL);
90 	val = readl_poll_timeout(trng->mem + EXYNOS_TRNG_FIFO_CTRL, val,
95 	memcpy_fromio(data, trng->mem + EXYNOS_TRNG_FIFO_0, max);
135 	struct exynos_trng_dev *trng = (struct exynos_trng_dev *)rng->priv;
139 	sss_rate = clk_get_rate(trng->clk);
142 	 * For most TRNG circuits the clock frequency of under 500 kHz
147 		dev_err(trng->dev, "clock divider too large: %d\n", val);
151 	writel_relaxed(val, trng->mem + EXYNOS_TRNG_CLKDIV);
155 	writel_relaxed(val, trng->mem + EXYNOS_TRNG_CTRL);
161 	writel_relaxed(0, trng->mem + EXYNOS_TRNG_POST_CTRL);
168 	struct exynos_trng_dev *trng = (struct exynos_trng_dev *)rng->priv;
174 		dev_err(trng->dev, "SMC command for TRNG init failed (%d)\n",
179 		dev_info(trng->dev, "Make sure LDFW is loaded by your BL\n");
186 	struct exynos_trng_dev *trng;
189 	trng = devm_kzalloc(&pdev->dev, sizeof(*trng), GFP_KERNEL);
190 	if (!trng)
193 	platform_set_drvdata(pdev, trng);
194 	trng->dev = &pdev->dev;
196 	trng->flags = (unsigned long)device_get_match_data(&pdev->dev);
198 	trng->rng.name = devm_kstrdup(&pdev->dev, dev_name(&pdev->dev),
200 	if (!trng->rng.name)
203 	trng->rng.priv = (unsigned long)trng;
205 	if (trng->flags & EXYNOS_SMC) {
206 		trng->rng.init = exynos_trng_init_smc;
207 		trng->rng.read = exynos_trng_do_read_smc;
209 		trng->rng.init = exynos_trng_init_reg;
210 		trng->rng.read = exynos_trng_do_read_reg;
212 		trng->mem = devm_platform_ioremap_resource(pdev, 0);
213 		if (IS_ERR(trng->mem))
214 			return PTR_ERR(trng->mem);
224 	trng->clk = devm_clk_get_enabled(&pdev->dev, "secss");
225 	if (IS_ERR(trng->clk)) {
226 		ret = dev_err_probe(&pdev->dev, PTR_ERR(trng->clk),
231 	trng->pclk = devm_clk_get_optional_enabled(&pdev->dev, "pclk");
232 	if (IS_ERR(trng->pclk)) {
233 		ret = dev_err_probe(&pdev->dev, PTR_ERR(trng->pclk),
238 	ret = devm_hwrng_register(&pdev->dev, &trng->rng);
259 	struct exynos_trng_dev *trng = platform_get_drvdata(pdev);
261 	if (trng->flags & EXYNOS_SMC) {
274 	struct exynos_trng_dev *trng = dev_get_drvdata(dev);
277 	if (trng->flags & EXYNOS_SMC) {
291 	struct exynos_trng_dev *trng = dev_get_drvdata(dev);
300 	if (trng->flags & EXYNOS_SMC) {
322 		.compatible = "samsung,exynos5250-trng",
324 		.compatible = "samsung,exynos850-trng",
333 		.name = "exynos-trng",
344 MODULE_DESCRIPTION("H/W TRNG driver for Exynos chips");