1 // SPDX-License-Identifier: GPL-2.0
5  * Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.
31 /* BIST ("built-in self-test") status flags */
39 	writel((val), (engine)->base + (reg))
42 	readl((engine)->base + (reg))
55 	struct device *dev = ice->dev;  in qcom_ice_check_supported()
107  * Wait until the ICE BIST (built-in self-test) has completed.
116  * and not relying on hardware-level self-tests.
123 	err = readl_poll_timeout(ice->base + QCOM_ICE_REG_BIST_STATUS,  in qcom_ice_wait_bist_status()
127 		dev_err(ice->dev, "Timed out waiting for ICE self-test to complete\n");  in qcom_ice_wait_bist_status()
143 	struct device *dev = ice->dev;  in qcom_ice_resume()
146 	err = clk_prepare_enable(ice->core_clk);  in qcom_ice_resume()
159 	clk_disable_unprepare(ice->core_clk);  in qcom_ice_suspend()
170 	struct device *dev = ice->dev;  in qcom_ice_program_key()
178 	/* Only AES-256-XTS has been tested so far. */  in qcom_ice_program_key()
184 		return -EINVAL;  in qcom_ice_program_key()
215 		return ERR_PTR(-EPROBE_DEFER);  in qcom_ice_create()
224 		return ERR_PTR(-ENOMEM);  in qcom_ice_create()
226 	engine->dev = dev;  in qcom_ice_create()
227 	engine->base = base;  in qcom_ice_create()
230 	 * Legacy DT binding uses different clk names for each consumer,  in qcom_ice_create()
232 	 * the we only have one clock and it is part of the dedicated DT node.  in qcom_ice_create()
236 	engine->core_clk = devm_clk_get_optional_enabled(dev, "ice_core_clk");  in qcom_ice_create()
237 	if (!engine->core_clk)  in qcom_ice_create()
238 		engine->core_clk = devm_clk_get_optional_enabled(dev, "ice");  in qcom_ice_create()
239 	if (!engine->core_clk)  in qcom_ice_create()
240 		engine->core_clk = devm_clk_get_enabled(dev, NULL);  in qcom_ice_create()
241 	if (IS_ERR(engine->core_clk))  in qcom_ice_create()
242 		return ERR_CAST(engine->core_clk);  in qcom_ice_create()
245 		return ERR_PTR(-EOPNOTSUPP);  in qcom_ice_create()
253  * of_qcom_ice_get() - get an ICE instance from a DT node
257  * consumer device if its DT node provides the 'ice' reg range and the 'ice'
258  * clock (for legacy DT style). On the other hand, if consumer provides a
259  * phandle via 'qcom,ice' property to an ICE DT, the ICE instance will already
272 	if (!dev || !dev->of_node)  in of_qcom_ice_get()
273 		return ERR_PTR(-ENODEV);  in of_qcom_ice_get()
282 		base = devm_ioremap_resource(&pdev->dev, res);  in of_qcom_ice_get()
287 		return qcom_ice_create(&pdev->dev, base);  in of_qcom_ice_get()
291 	 * If the consumer node does not provider an 'ice' reg range  in of_qcom_ice_get()
292 	 * (legacy DT binding), then it must at least provide a phandle  in of_qcom_ice_get()
293 	 * to the ICE devicetree node, otherwise ICE is not supported.  in of_qcom_ice_get()
295 	struct device_node *node __free(device_node) = of_parse_phandle(dev->of_node,  in of_qcom_ice_get()
297 	if (!node)  in of_qcom_ice_get()
300 	pdev = of_find_device_by_node(node);  in of_qcom_ice_get()
302 		dev_err(dev, "Cannot find device node %s\n", node->name);  in of_qcom_ice_get()
303 		return ERR_PTR(-EPROBE_DEFER);  in of_qcom_ice_get()
309 			dev_name(&pdev->dev));  in of_qcom_ice_get()
311 		return ERR_PTR(-EPROBE_DEFER);  in of_qcom_ice_get()
314 	ice->link = device_link_add(dev, &pdev->dev, DL_FLAG_AUTOREMOVE_SUPPLIER);  in of_qcom_ice_get()
315 	if (!ice->link) {  in of_qcom_ice_get()
316 		dev_err(&pdev->dev,  in of_qcom_ice_get()
320 		ice = ERR_PTR(-EINVAL);  in of_qcom_ice_get()
334 		dev_warn(&pdev->dev, "ICE registers not found\n");  in qcom_ice_probe()
338 	engine = qcom_ice_create(&pdev->dev, base);  in qcom_ice_probe()
348 	{ .compatible = "qcom,inline-crypto-engine" },
356 		.name = "qcom-ice",