1 // SPDX-License-Identifier: GPL-2.0-only
3  * Crypto acceleration support for Rockchip RK3288
7  * Author: Zain Wang <zain.wang@rock-chips.com>
9  * Some ideas are from marvell-cesa.c and s5p-sss.c driver.
13 #include <linux/dma-mapping.h>
18 #include <linux/crypto.h>
25 	err = clk_prepare_enable(dev->sclk);  in rk_crypto_enable_clk()
27 		dev_err(dev->dev, "[%s:%d], Couldn't enable clock sclk\n",  in rk_crypto_enable_clk()
31 	err = clk_prepare_enable(dev->aclk);  in rk_crypto_enable_clk()
33 		dev_err(dev->dev, "[%s:%d], Couldn't enable clock aclk\n",  in rk_crypto_enable_clk()
37 	err = clk_prepare_enable(dev->hclk);  in rk_crypto_enable_clk()
39 		dev_err(dev->dev, "[%s:%d], Couldn't enable clock hclk\n",  in rk_crypto_enable_clk()
43 	err = clk_prepare_enable(dev->dmaclk);  in rk_crypto_enable_clk()
45 		dev_err(dev->dev, "[%s:%d], Couldn't enable clock dmaclk\n",  in rk_crypto_enable_clk()
51 	clk_disable_unprepare(dev->hclk);  in rk_crypto_enable_clk()
53 	clk_disable_unprepare(dev->aclk);  in rk_crypto_enable_clk()
55 	clk_disable_unprepare(dev->sclk);  in rk_crypto_enable_clk()
62 	clk_disable_unprepare(dev->dmaclk);  in rk_crypto_disable_clk()
63 	clk_disable_unprepare(dev->hclk);  in rk_crypto_disable_clk()
64 	clk_disable_unprepare(dev->aclk);  in rk_crypto_disable_clk()
65 	clk_disable_unprepare(dev->sclk);  in rk_crypto_disable_clk()
76 	dev->status = 1;  in rk_crypto_irq_handle()
78 		dev_warn(dev->dev, "DMA Error\n");  in rk_crypto_irq_handle()
79 		dev->status = 0;  in rk_crypto_irq_handle()
81 	complete(&dev->complete);  in rk_crypto_irq_handle()
104 		rk_cipher_algs[i]->dev = crypto_info;  in rk_crypto_register()
105 		if (rk_cipher_algs[i]->type == ALG_TYPE_CIPHER)  in rk_crypto_register()
107 					&rk_cipher_algs[i]->alg.skcipher);  in rk_crypto_register()
110 					&rk_cipher_algs[i]->alg.hash);  in rk_crypto_register()
118 		if (rk_cipher_algs[i]->type == ALG_TYPE_CIPHER)  in rk_crypto_register()
119 			crypto_unregister_skcipher(&rk_cipher_algs[k]->alg.skcipher);  in rk_crypto_register()
121 			crypto_unregister_ahash(&rk_cipher_algs[i]->alg.hash);  in rk_crypto_register()
131 		if (rk_cipher_algs[i]->type == ALG_TYPE_CIPHER)  in rk_crypto_unregister()
132 			crypto_unregister_skcipher(&rk_cipher_algs[i]->alg.skcipher);  in rk_crypto_unregister()
134 			crypto_unregister_ahash(&rk_cipher_algs[i]->alg.hash);  in rk_crypto_unregister()
142 	reset_control_assert(crypto_info->rst);  in rk_crypto_action()
146 	{ .compatible = "rockchip,rk3288-crypto" },
153 	struct device *dev = &pdev->dev;  in rk_crypto_probe()
157 	crypto_info = devm_kzalloc(&pdev->dev,  in rk_crypto_probe()
160 		err = -ENOMEM;  in rk_crypto_probe()
164 	crypto_info->rst = devm_reset_control_get(dev, "crypto-rst");  in rk_crypto_probe()
165 	if (IS_ERR(crypto_info->rst)) {  in rk_crypto_probe()
166 		err = PTR_ERR(crypto_info->rst);  in rk_crypto_probe()
170 	reset_control_assert(crypto_info->rst);  in rk_crypto_probe()
172 	reset_control_deassert(crypto_info->rst);  in rk_crypto_probe()
178 	crypto_info->reg = devm_platform_ioremap_resource(pdev, 0);  in rk_crypto_probe()
179 	if (IS_ERR(crypto_info->reg)) {  in rk_crypto_probe()
180 		err = PTR_ERR(crypto_info->reg);  in rk_crypto_probe()
184 	crypto_info->aclk = devm_clk_get(&pdev->dev, "aclk");  in rk_crypto_probe()
185 	if (IS_ERR(crypto_info->aclk)) {  in rk_crypto_probe()
186 		err = PTR_ERR(crypto_info->aclk);  in rk_crypto_probe()
190 	crypto_info->hclk = devm_clk_get(&pdev->dev, "hclk");  in rk_crypto_probe()
191 	if (IS_ERR(crypto_info->hclk)) {  in rk_crypto_probe()
192 		err = PTR_ERR(crypto_info->hclk);  in rk_crypto_probe()
196 	crypto_info->sclk = devm_clk_get(&pdev->dev, "sclk");  in rk_crypto_probe()
197 	if (IS_ERR(crypto_info->sclk)) {  in rk_crypto_probe()
198 		err = PTR_ERR(crypto_info->sclk);  in rk_crypto_probe()
202 	crypto_info->dmaclk = devm_clk_get(&pdev->dev, "apb_pclk");  in rk_crypto_probe()
203 	if (IS_ERR(crypto_info->dmaclk)) {  in rk_crypto_probe()
204 		err = PTR_ERR(crypto_info->dmaclk);  in rk_crypto_probe()
208 	crypto_info->irq = platform_get_irq(pdev, 0);  in rk_crypto_probe()
209 	if (crypto_info->irq < 0) {  in rk_crypto_probe()
210 		dev_warn(crypto_info->dev,  in rk_crypto_probe()
212 		err = crypto_info->irq;  in rk_crypto_probe()
216 	err = devm_request_irq(&pdev->dev, crypto_info->irq,  in rk_crypto_probe()
218 			       "rk-crypto", pdev);  in rk_crypto_probe()
221 		dev_err(crypto_info->dev, "irq request failed.\n");  in rk_crypto_probe()
225 	crypto_info->dev = &pdev->dev;  in rk_crypto_probe()
228 	crypto_info->engine = crypto_engine_alloc_init(&pdev->dev, true);  in rk_crypto_probe()
229 	crypto_engine_start(crypto_info->engine);  in rk_crypto_probe()
230 	init_completion(&crypto_info->complete);  in rk_crypto_probe()
240 	dev_info(dev, "Crypto Accelerator successfully registered\n");  in rk_crypto_probe()
244 	crypto_engine_exit(crypto_info->engine);  in rk_crypto_probe()
246 	dev_err(dev, "Crypto Accelerator not successfully registered\n");  in rk_crypto_probe()
256 	crypto_engine_exit(crypto_tmp->engine);  in rk_crypto_remove()
264 		.name	= "rk3288-crypto",
271 MODULE_AUTHOR("Zain Wang <zain.wang@rock-chips.com>");