1 // SPDX-License-Identifier: GPL-2.0
5  * Support for StarFive hardware cryptographic engine.
10 #include <crypto/engine.h>
11 #include "jh7110-cryp.h"
25 #define DRIVER_NAME             "jh7110-crypto"
42 	if (!ctx->cryp) {  in starfive_cryp_find_dev()
47 		ctx->cryp = cryp;  in starfive_cryp_find_dev()
49 		cryp = ctx->cryp;  in starfive_cryp_find_dev()
61 			    " 0 - Disabled\n"
62 			    " other - Enabled");
71 	cryp->tx = dma_request_chan(cryp->dev, "tx");  in starfive_dma_init()
72 	if (IS_ERR(cryp->tx))  in starfive_dma_init()
73 		return dev_err_probe(cryp->dev, PTR_ERR(cryp->tx),  in starfive_dma_init()
76 	cryp->rx = dma_request_chan(cryp->dev, "rx");  in starfive_dma_init()
77 	if (IS_ERR(cryp->rx)) {  in starfive_dma_init()
78 		dma_release_channel(cryp->tx);  in starfive_dma_init()
79 		return dev_err_probe(cryp->dev, PTR_ERR(cryp->rx),  in starfive_dma_init()
88 	dma_release_channel(cryp->tx);  in starfive_dma_cleanup()
89 	dma_release_channel(cryp->rx);  in starfive_dma_cleanup()
98 	cryp = devm_kzalloc(&pdev->dev, sizeof(*cryp), GFP_KERNEL);  in starfive_cryp_probe()
100 		return -ENOMEM;  in starfive_cryp_probe()
103 	cryp->dev = &pdev->dev;  in starfive_cryp_probe()
105 	cryp->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);  in starfive_cryp_probe()
106 	if (IS_ERR(cryp->base))  in starfive_cryp_probe()
107 		return dev_err_probe(&pdev->dev, PTR_ERR(cryp->base),  in starfive_cryp_probe()
110 	cryp->phys_base = res->start;  in starfive_cryp_probe()
111 	cryp->dma_maxburst = 32;  in starfive_cryp_probe()
112 	cryp->side_chan = side_chan;  in starfive_cryp_probe()
114 	cryp->hclk = devm_clk_get(&pdev->dev, "hclk");  in starfive_cryp_probe()
115 	if (IS_ERR(cryp->hclk))  in starfive_cryp_probe()
116 		return dev_err_probe(&pdev->dev, PTR_ERR(cryp->hclk),  in starfive_cryp_probe()
119 	cryp->ahb = devm_clk_get(&pdev->dev, "ahb");  in starfive_cryp_probe()
120 	if (IS_ERR(cryp->ahb))  in starfive_cryp_probe()
121 		return dev_err_probe(&pdev->dev, PTR_ERR(cryp->ahb),  in starfive_cryp_probe()
124 	cryp->rst = devm_reset_control_get_shared(cryp->dev, NULL);  in starfive_cryp_probe()
125 	if (IS_ERR(cryp->rst))  in starfive_cryp_probe()
126 		return dev_err_probe(&pdev->dev, PTR_ERR(cryp->rst),  in starfive_cryp_probe()
129 	clk_prepare_enable(cryp->hclk);  in starfive_cryp_probe()
130 	clk_prepare_enable(cryp->ahb);  in starfive_cryp_probe()
131 	reset_control_deassert(cryp->rst);  in starfive_cryp_probe()
134 	list_add(&cryp->list, &dev_list.dev_list);  in starfive_cryp_probe()
141 	/* Initialize crypto engine */  in starfive_cryp_probe()
142 	cryp->engine = crypto_engine_alloc_init(&pdev->dev, 1);  in starfive_cryp_probe()
143 	if (!cryp->engine) {  in starfive_cryp_probe()
144 		ret = -ENOMEM;  in starfive_cryp_probe()
148 	ret = crypto_engine_start(cryp->engine);  in starfive_cryp_probe()
171 	crypto_engine_exit(cryp->engine);  in starfive_cryp_probe()
176 	list_del(&cryp->list);  in starfive_cryp_probe()
179 	clk_disable_unprepare(cryp->hclk);  in starfive_cryp_probe()
180 	clk_disable_unprepare(cryp->ahb);  in starfive_cryp_probe()
181 	reset_control_assert(cryp->rst);  in starfive_cryp_probe()
194 	crypto_engine_exit(cryp->engine);  in starfive_cryp_remove()
199 	list_del(&cryp->list);  in starfive_cryp_remove()
202 	clk_disable_unprepare(cryp->hclk);  in starfive_cryp_remove()
203 	clk_disable_unprepare(cryp->ahb);  in starfive_cryp_remove()
204 	reset_control_assert(cryp->rst);  in starfive_cryp_remove()
208 	{ .compatible = "starfive,jh7110-crypto", .data = NULL},