crypto: rockchip: cryptodev_linux: add rk_cryptodev.c

Add register and unregister for crypto driver.

Signed-off-by: Lin Jinhan <troy.lin@rock-chips.com>
Change-Id: I406776514374bb460875ce8bd71a3031cd110587

drivers/crypto/rockchip/cryptodev_linux/Makefile

@@ -5,5 +5,6 @@ cryptodev-objs := ioctl.o \
 		cryptlib.o \
 		authenc.o \
 		zc.o \
-		util.o
+		util.o \
+		rk_cryptodev.o
 

drivers/crypto/rockchip/cryptodev_linux/rk_cryptodev.c

@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Crypto acceleration support for Rockchip crypto
+ *
+ * Copyright (c) 2021, Rockchip Electronics Co., Ltd
+ *
+ * Author: Lin Jinhan <troy.lin@rock-chips.com>
+ *
+ */
+#include <linux/kernel.h>
+#include "rk_cryptodev_int.h"
+
+#define MAX_CRYPTO_DEV		1
+#define MAX_CRYPTO_NAME_LEN	64
+
+struct crypto_dev_info {
+	struct device *dev;
+	char name[MAX_CRYPTO_NAME_LEN];
+};
+
+static struct crypto_dev_info g_dev_infos[MAX_CRYPTO_DEV];
+
+/*
+ * rk_cryptodev_register_dev - register crypto device into rk_cryptodev.
+ * @dev:	[in]	crypto device to register
+ * @name:	[in]	crypto device name to register
+ */
+int rk_cryptodev_register_dev(struct device *dev, const char *name)
+{
+	uint32_t i;
+
+	if (WARN_ON(!dev))
+		return -EINVAL;
+
+	if (WARN_ON(!name))
+		return -EINVAL;
+
+	for (i = 0; i < ARRAY_SIZE(g_dev_infos); i++) {
+		if (!g_dev_infos[i].dev) {
+			memset(&g_dev_infos[i], 0x00, sizeof(g_dev_infos[i]));
+
+			g_dev_infos[i].dev = dev;
+			strncpy(g_dev_infos[i].name, name, sizeof(g_dev_infos[i].name));
+			dev_info(dev, "register to cryptodev ok!\n");
+			return 0;
+		}
+	}
+
+	return -ENOMEM;
+}
+EXPORT_SYMBOL_GPL(rk_cryptodev_register_dev);
+
+/*
+ * rk_cryptodev_unregister_dev - unregister crypto device from rk_cryptodev
+ * @dev:	[in]	crypto device to unregister
+ */
+int rk_cryptodev_unregister_dev(struct device *dev)
+{
+	uint32_t i;
+
+	if (WARN_ON(!dev))
+		return -EINVAL;
+
+	for (i = 0; i < ARRAY_SIZE(g_dev_infos); i++) {
+		if (g_dev_infos[i].dev == dev) {
+			memset(&g_dev_infos[i], 0x00, sizeof(g_dev_infos[i]));
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(rk_cryptodev_unregister_dev);

drivers/crypto/rockchip/cryptodev_linux/rk_cryptodev_int.h

@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/* Copyright (c) 2021 Rockchip Electronics Co. Ltd. */
+
+#ifndef __RK_CRYPTODEV_INT_H__
+#define __RK_CRYPTODEV_INT_H__
+
+#include <linux/device.h>
+
+#if IS_ENABLED(CONFIG_CRYPTO_DEV_ROCKCHIP_DEV)
+int rk_cryptodev_register_dev(struct device *dev, const char *name);
+int rk_cryptodev_unregister_dev(struct device *dev);
+#else
+static inline int rk_cryptodev_register_dev(struct device *dev, const char *name)
+{
+	return 0;
+}
+
+static inline int rk_cryptodev_unregister_dev(struct device *dev)
+{
+	return 0;
+}
+#endif
+
+#endif