Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2163 insertions, 0 deletions

diff --git a/drivers/crypto/stm32/stm32-cryp.c b/drivers/crypto/stm32/stm32-cryp.c
new file mode 100644
index 0000000000..f095f00654
--- /dev/null
+++ b/drivers/crypto/stm32/stm32-cryp.c
@@ -0,0 +1,2163 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) STMicroelectronics SA 2017
+ * Author: Fabien Dessenne <fabien.dessenne@st.com>
+ * Ux500 support taken from snippets in the old Ux500 cryp driver
+ */
+
+#include <crypto/aes.h>
+#include <crypto/engine.h>
+#include <crypto/internal/aead.h>
+#include <crypto/internal/des.h>
+#include <crypto/internal/skcipher.h>
+#include <crypto/scatterwalk.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/iopoll.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+#include <linux/string.h>
+
+#define DRIVER_NAME             "stm32-cryp"
+
+/* Bit [0] encrypt / decrypt */
+#define FLG_ENCRYPT             BIT(0)
+/* Bit [8..1] algo & operation mode */
+#define FLG_AES                 BIT(1)
+#define FLG_DES                 BIT(2)
+#define FLG_TDES                BIT(3)
+#define FLG_ECB                 BIT(4)
+#define FLG_CBC                 BIT(5)
+#define FLG_CTR                 BIT(6)
+#define FLG_GCM                 BIT(7)
+#define FLG_CCM                 BIT(8)
+/* Mode mask = bits [15..0] */
+#define FLG_MODE_MASK           GENMASK(15, 0)
+/* Bit [31..16] status  */
+
+/* Registers */
+#define CRYP_CR                 0x00000000
+#define CRYP_SR                 0x00000004
+#define CRYP_DIN                0x00000008
+#define CRYP_DOUT               0x0000000C
+#define CRYP_DMACR              0x00000010
+#define CRYP_IMSCR              0x00000014
+#define CRYP_RISR               0x00000018
+#define CRYP_MISR               0x0000001C
+#define CRYP_K0LR               0x00000020
+#define CRYP_K0RR               0x00000024
+#define CRYP_K1LR               0x00000028
+#define CRYP_K1RR               0x0000002C
+#define CRYP_K2LR               0x00000030
+#define CRYP_K2RR               0x00000034
+#define CRYP_K3LR               0x00000038
+#define CRYP_K3RR               0x0000003C
+#define CRYP_IV0LR              0x00000040
+#define CRYP_IV0RR              0x00000044
+#define CRYP_IV1LR              0x00000048
+#define CRYP_IV1RR              0x0000004C
+#define CRYP_CSGCMCCM0R         0x00000050
+#define CRYP_CSGCM0R            0x00000070
+
+#define UX500_CRYP_CR		0x00000000
+#define UX500_CRYP_SR		0x00000004
+#define UX500_CRYP_DIN		0x00000008
+#define UX500_CRYP_DINSIZE	0x0000000C
+#define UX500_CRYP_DOUT		0x00000010
+#define UX500_CRYP_DOUSIZE	0x00000014
+#define UX500_CRYP_DMACR	0x00000018
+#define UX500_CRYP_IMSC		0x0000001C
+#define UX500_CRYP_RIS		0x00000020
+#define UX500_CRYP_MIS		0x00000024
+#define UX500_CRYP_K1L		0x00000028
+#define UX500_CRYP_K1R		0x0000002C
+#define UX500_CRYP_K2L		0x00000030
+#define UX500_CRYP_K2R		0x00000034
+#define UX500_CRYP_K3L		0x00000038
+#define UX500_CRYP_K3R		0x0000003C
+#define UX500_CRYP_K4L		0x00000040
+#define UX500_CRYP_K4R		0x00000044
+#define UX500_CRYP_IV0L		0x00000048
+#define UX500_CRYP_IV0R		0x0000004C
+#define UX500_CRYP_IV1L		0x00000050
+#define UX500_CRYP_IV1R		0x00000054
+
+/* Registers values */
+#define CR_DEC_NOT_ENC          0x00000004
+#define CR_TDES_ECB             0x00000000
+#define CR_TDES_CBC             0x00000008
+#define CR_DES_ECB              0x00000010
+#define CR_DES_CBC              0x00000018
+#define CR_AES_ECB              0x00000020
+#define CR_AES_CBC              0x00000028
+#define CR_AES_CTR              0x00000030
+#define CR_AES_KP               0x00000038 /* Not on Ux500 */
+#define CR_AES_XTS              0x00000038 /* Only on Ux500 */
+#define CR_AES_GCM              0x00080000
+#define CR_AES_CCM              0x00080008
+#define CR_AES_UNKNOWN          0xFFFFFFFF
+#define CR_ALGO_MASK            0x00080038
+#define CR_DATA32               0x00000000
+#define CR_DATA16               0x00000040
+#define CR_DATA8                0x00000080
+#define CR_DATA1                0x000000C0
+#define CR_KEY128               0x00000000
+#define CR_KEY192               0x00000100
+#define CR_KEY256               0x00000200
+#define CR_KEYRDEN              0x00000400 /* Only on Ux500 */
+#define CR_KSE                  0x00000800 /* Only on Ux500 */
+#define CR_FFLUSH               0x00004000
+#define CR_CRYPEN               0x00008000
+#define CR_PH_INIT              0x00000000
+#define CR_PH_HEADER            0x00010000
+#define CR_PH_PAYLOAD           0x00020000
+#define CR_PH_FINAL             0x00030000
+#define CR_PH_MASK              0x00030000
+#define CR_NBPBL_SHIFT          20
+
+#define SR_BUSY                 0x00000010
+#define SR_OFNE                 0x00000004
+
+#define IMSCR_IN                BIT(0)
+#define IMSCR_OUT               BIT(1)
+
+#define MISR_IN                 BIT(0)
+#define MISR_OUT                BIT(1)
+
+/* Misc */
+#define AES_BLOCK_32            (AES_BLOCK_SIZE / sizeof(u32))
+#define GCM_CTR_INIT            2
+#define CRYP_AUTOSUSPEND_DELAY	50
+
+struct stm32_cryp_caps {
+	bool			aeads_support;
+	bool			linear_aes_key;
+	bool			kp_mode;
+	bool			iv_protection;
+	bool			swap_final;
+	bool			padding_wa;
+	u32			cr;
+	u32			sr;
+	u32			din;
+	u32			dout;
+	u32			imsc;
+	u32			mis;
+	u32			k1l;
+	u32			k1r;
+	u32			k3r;
+	u32			iv0l;
+	u32			iv0r;
+	u32			iv1l;
+	u32			iv1r;
+};
+
+struct stm32_cryp_ctx {
+	struct stm32_cryp       *cryp;
+	int                     keylen;
+	__be32                  key[AES_KEYSIZE_256 / sizeof(u32)];
+	unsigned long           flags;
+};
+
+struct stm32_cryp_reqctx {
+	unsigned long mode;
+};
+
+struct stm32_cryp {
+	struct list_head        list;
+	struct device           *dev;
+	void __iomem            *regs;
+	struct clk              *clk;
+	unsigned long           flags;
+	u32                     irq_status;
+	const struct stm32_cryp_caps *caps;
+	struct stm32_cryp_ctx   *ctx;
+
+	struct crypto_engine    *engine;
+
+	struct skcipher_request *req;
+	struct aead_request     *areq;
+
+	size_t                  authsize;
+	size_t                  hw_blocksize;
+
+	size_t                  payload_in;
+	size_t                  header_in;
+	size_t                  payload_out;
+
+	struct scatterlist      *out_sg;
+
+	struct scatter_walk     in_walk;
+	struct scatter_walk     out_walk;
+
+	__be32                  last_ctr[4];
+	u32                     gcm_ctr;
+};
+
+struct stm32_cryp_list {
+	struct list_head        dev_list;
+	spinlock_t              lock; /* protect dev_list */
+};
+
+static struct stm32_cryp_list cryp_list = {
+	.dev_list = LIST_HEAD_INIT(cryp_list.dev_list),
+	.lock     = __SPIN_LOCK_UNLOCKED(cryp_list.lock),
+};
+
+static inline bool is_aes(struct stm32_cryp *cryp)
+{
+	return cryp->flags & FLG_AES;
+}
+
+static inline bool is_des(struct stm32_cryp *cryp)
+{
+	return cryp->flags & FLG_DES;
+}
+
+static inline bool is_tdes(struct stm32_cryp *cryp)
+{
+	return cryp->flags & FLG_TDES;
+}
+
+static inline bool is_ecb(struct stm32_cryp *cryp)
+{
+	return cryp->flags & FLG_ECB;
+}
+
+static inline bool is_cbc(struct stm32_cryp *cryp)
+{
+	return cryp->flags & FLG_CBC;
+}
+
+static inline bool is_ctr(struct stm32_cryp *cryp)
+{
+	return cryp->flags & FLG_CTR;
+}
+
+static inline bool is_gcm(struct stm32_cryp *cryp)
+{
+	return cryp->flags & FLG_GCM;
+}
+
+static inline bool is_ccm(struct stm32_cryp *cryp)
+{
+	return cryp->flags & FLG_CCM;
+}
+
+static inline bool is_encrypt(struct stm32_cryp *cryp)
+{
+	return cryp->flags & FLG_ENCRYPT;
+}
+
+static inline bool is_decrypt(struct stm32_cryp *cryp)
+{
+	return !is_encrypt(cryp);
+}
+
+static inline u32 stm32_cryp_read(struct stm32_cryp *cryp, u32 ofst)
+{
+	return readl_relaxed(cryp->regs + ofst);
+}
+
+static inline void stm32_cryp_write(struct stm32_cryp *cryp, u32 ofst, u32 val)
+{
+	writel_relaxed(val, cryp->regs + ofst);
+}
+
+static inline int stm32_cryp_wait_busy(struct stm32_cryp *cryp)
+{
+	u32 status;
+
+	return readl_relaxed_poll_timeout(cryp->regs + cryp->caps->sr, status,
+			!(status & SR_BUSY), 10, 100000);
+}
+
+static inline void stm32_cryp_enable(struct stm32_cryp *cryp)
+{
+	writel_relaxed(readl_relaxed(cryp->regs + cryp->caps->cr) | CR_CRYPEN,
+		       cryp->regs + cryp->caps->cr);
+}
+
+static inline int stm32_cryp_wait_enable(struct stm32_cryp *cryp)
+{
+	u32 status;
+
+	return readl_relaxed_poll_timeout(cryp->regs + cryp->caps->cr, status,
+			!(status & CR_CRYPEN), 10, 100000);
+}
+
+static inline int stm32_cryp_wait_output(struct stm32_cryp *cryp)
+{
+	u32 status;
+
+	return readl_relaxed_poll_timeout(cryp->regs + cryp->caps->sr, status,
+			status & SR_OFNE, 10, 100000);
+}
+
+static inline void stm32_cryp_key_read_enable(struct stm32_cryp *cryp)
+{
+	writel_relaxed(readl_relaxed(cryp->regs + cryp->caps->cr) | CR_KEYRDEN,
+		       cryp->regs + cryp->caps->cr);
+}
+
+static inline void stm32_cryp_key_read_disable(struct stm32_cryp *cryp)
+{
+	writel_relaxed(readl_relaxed(cryp->regs + cryp->caps->cr) & ~CR_KEYRDEN,
+		       cryp->regs + cryp->caps->cr);
+}
+
+static int stm32_cryp_read_auth_tag(struct stm32_cryp *cryp);
+static void stm32_cryp_finish_req(struct stm32_cryp *cryp, int err);
+
+static struct stm32_cryp *stm32_cryp_find_dev(struct stm32_cryp_ctx *ctx)
+{
+	struct stm32_cryp *tmp, *cryp = NULL;
+
+	spin_lock_bh(&cryp_list.lock);
+	if (!ctx->cryp) {
+		list_for_each_entry(tmp, &cryp_list.dev_list, list) {
+			cryp = tmp;
+			break;
+		}
+		ctx->cryp = cryp;
+	} else {
+		cryp = ctx->cryp;
+	}
+
+	spin_unlock_bh(&cryp_list.lock);
+
+	return cryp;
+}
+
+static void stm32_cryp_hw_write_iv(struct stm32_cryp *cryp, __be32 *iv)
+{
+	if (!iv)
+		return;
+
+	stm32_cryp_write(cryp, cryp->caps->iv0l, be32_to_cpu(*iv++));
+	stm32_cryp_write(cryp, cryp->caps->iv0r, be32_to_cpu(*iv++));
+
+	if (is_aes(cryp)) {
+		stm32_cryp_write(cryp, cryp->caps->iv1l, be32_to_cpu(*iv++));
+		stm32_cryp_write(cryp, cryp->caps->iv1r, be32_to_cpu(*iv++));
+	}
+}
+
+static void stm32_cryp_get_iv(struct stm32_cryp *cryp)
+{
+	struct skcipher_request *req = cryp->req;
+	__be32 *tmp = (void *)req->iv;
+
+	if (!tmp)
+		return;
+
+	if (cryp->caps->iv_protection)
+		stm32_cryp_key_read_enable(cryp);
+
+	*tmp++ = cpu_to_be32(stm32_cryp_read(cryp, cryp->caps->iv0l));
+	*tmp++ = cpu_to_be32(stm32_cryp_read(cryp, cryp->caps->iv0r));
+
+	if (is_aes(cryp)) {
+		*tmp++ = cpu_to_be32(stm32_cryp_read(cryp, cryp->caps->iv1l));
+		*tmp++ = cpu_to_be32(stm32_cryp_read(cryp, cryp->caps->iv1r));
+	}
+
+	if (cryp->caps->iv_protection)
+		stm32_cryp_key_read_disable(cryp);
+}
+
+/**
+ * ux500_swap_bits_in_byte() - mirror the bits in a byte
+ * @b: the byte to be mirrored
+ *
+ * The bits are swapped the following way:
+ *  Byte b include bits 0-7, nibble 1 (n1) include bits 0-3 and
+ *  nibble 2 (n2) bits 4-7.
+ *
+ *  Nibble 1 (n1):
+ *  (The "old" (moved) bit is replaced with a zero)
+ *  1. Move bit 6 and 7, 4 positions to the left.
+ *  2. Move bit 3 and 5, 2 positions to the left.
+ *  3. Move bit 1-4, 1 position to the left.
+ *
+ *  Nibble 2 (n2):
+ *  1. Move bit 0 and 1, 4 positions to the right.
+ *  2. Move bit 2 and 4, 2 positions to the right.
+ *  3. Move bit 3-6, 1 position to the right.
+ *
+ *  Combine the two nibbles to a complete and swapped byte.
+ */
+static inline u8 ux500_swap_bits_in_byte(u8 b)
+{
+#define R_SHIFT_4_MASK  0xc0 /* Bits 6 and 7, right shift 4 */
+#define R_SHIFT_2_MASK  0x28 /* (After right shift 4) Bits 3 and 5,
+				  right shift 2 */
+#define R_SHIFT_1_MASK  0x1e /* (After right shift 2) Bits 1-4,
+				  right shift 1 */
+#define L_SHIFT_4_MASK  0x03 /* Bits 0 and 1, left shift 4 */
+#define L_SHIFT_2_MASK  0x14 /* (After left shift 4) Bits 2 and 4,
+				  left shift 2 */
+#define L_SHIFT_1_MASK  0x78 /* (After left shift 1) Bits 3-6,
+				  left shift 1 */
+
+	u8 n1;
+	u8 n2;
+
+	/* Swap most significant nibble */
+	/* Right shift 4, bits 6 and 7 */
+	n1 = ((b  & R_SHIFT_4_MASK) >> 4) | (b  & ~(R_SHIFT_4_MASK >> 4));
+	/* Right shift 2, bits 3 and 5 */
+	n1 = ((n1 & R_SHIFT_2_MASK) >> 2) | (n1 & ~(R_SHIFT_2_MASK >> 2));
+	/* Right shift 1, bits 1-4 */
+	n1 = (n1  & R_SHIFT_1_MASK) >> 1;
+
+	/* Swap least significant nibble */
+	/* Left shift 4, bits 0 and 1 */
+	n2 = ((b  & L_SHIFT_4_MASK) << 4) | (b  & ~(L_SHIFT_4_MASK << 4));
+	/* Left shift 2, bits 2 and 4 */
+	n2 = ((n2 & L_SHIFT_2_MASK) << 2) | (n2 & ~(L_SHIFT_2_MASK << 2));
+	/* Left shift 1, bits 3-6 */
+	n2 = (n2  & L_SHIFT_1_MASK) << 1;
+
+	return n1 | n2;
+}
+
+/**
+ * ux500_swizzle_key() - Shuffle around words and bits in the AES key
+ * @in: key to swizzle
+ * @out: swizzled key
+ * @len: length of key, in bytes
+ *
+ * This "key swizzling procedure" is described in the examples in the
+ * DB8500 design specification. There is no real description of why
+ * the bits have been arranged like this in the hardware.
+ */
+static inline void ux500_swizzle_key(const u8 *in, u8 *out, u32 len)
+{
+	int i = 0;
+	int bpw = sizeof(u32);
+	int j;
+	int index = 0;
+
+	j = len - bpw;
+	while (j >= 0) {
+		for (i = 0; i < bpw; i++) {
+			index = len - j - bpw + i;
+			out[j + i] =
+				ux500_swap_bits_in_byte(in[index]);
+		}
+		j -= bpw;
+	}
+}
+
+static void stm32_cryp_hw_write_key(struct stm32_cryp *c)
+{
+	unsigned int i;
+	int r_id;
+
+	if (is_des(c)) {
+		stm32_cryp_write(c, c->caps->k1l, be32_to_cpu(c->ctx->key[0]));
+		stm32_cryp_write(c, c->caps->k1r, be32_to_cpu(c->ctx->key[1]));
+		return;
+	}
+
+	/*
+	 * On the Ux500 the AES key is considered as a single bit sequence
+	 * of 128, 192 or 256 bits length. It is written linearly into the
+	 * registers from K1L and down, and need to be processed to become
+	 * a proper big-endian bit sequence.
+	 */
+	if (is_aes(c) && c->caps->linear_aes_key) {
+		u32 tmpkey[8];
+
+		ux500_swizzle_key((u8 *)c->ctx->key,
+				  (u8 *)tmpkey, c->ctx->keylen);
+
+		r_id = c->caps->k1l;
+		for (i = 0; i < c->ctx->keylen / sizeof(u32); i++, r_id += 4)
+			stm32_cryp_write(c, r_id, tmpkey[i]);
+
+		return;
+	}
+
+	r_id = c->caps->k3r;
+	for (i = c->ctx->keylen / sizeof(u32); i > 0; i--, r_id -= 4)
+		stm32_cryp_write(c, r_id, be32_to_cpu(c->ctx->key[i - 1]));
+}
+
+static u32 stm32_cryp_get_hw_mode(struct stm32_cryp *cryp)
+{
+	if (is_aes(cryp) && is_ecb(cryp))
+		return CR_AES_ECB;
+
+	if (is_aes(cryp) && is_cbc(cryp))
+		return CR_AES_CBC;
+
+	if (is_aes(cryp) && is_ctr(cryp))
+		return CR_AES_CTR;
+
+	if (is_aes(cryp) && is_gcm(cryp))
+		return CR_AES_GCM;
+
+	if (is_aes(cryp) && is_ccm(cryp))
+		return CR_AES_CCM;
+
+	if (is_des(cryp) && is_ecb(cryp))
+		return CR_DES_ECB;
+
+	if (is_des(cryp) && is_cbc(cryp))
+		return CR_DES_CBC;
+
+	if (is_tdes(cryp) && is_ecb(cryp))
+		return CR_TDES_ECB;
+
+	if (is_tdes(cryp) && is_cbc(cryp))
+		return CR_TDES_CBC;
+
+	dev_err(cryp->dev, "Unknown mode\n");
+	return CR_AES_UNKNOWN;
+}
+
+static unsigned int stm32_cryp_get_input_text_len(struct stm32_cryp *cryp)
+{
+	return is_encrypt(cryp) ? cryp->areq->cryptlen :
+				  cryp->areq->cryptlen - cryp->authsize;
+}
+
+static int stm32_cryp_gcm_init(struct stm32_cryp *cryp, u32 cfg)
+{
+	int ret;
+	__be32 iv[4];
+
+	/* Phase 1 : init */
+	memcpy(iv, cryp->areq->iv, 12);
+	iv[3] = cpu_to_be32(GCM_CTR_INIT);
+	cryp->gcm_ctr = GCM_CTR_INIT;
+	stm32_cryp_hw_write_iv(cryp, iv);
+
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg | CR_PH_INIT | CR_CRYPEN);
+
+	/* Wait for end of processing */
+	ret = stm32_cryp_wait_enable(cryp);
+	if (ret) {
+		dev_err(cryp->dev, "Timeout (gcm init)\n");
+		return ret;
+	}
+
+	/* Prepare next phase */
+	if (cryp->areq->assoclen) {
+		cfg |= CR_PH_HEADER;
+		stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+	} else if (stm32_cryp_get_input_text_len(cryp)) {
+		cfg |= CR_PH_PAYLOAD;
+		stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+	}
+
+	return 0;
+}
+
+static void stm32_crypt_gcmccm_end_header(struct stm32_cryp *cryp)
+{
+	u32 cfg;
+	int err;
+
+	/* Check if whole header written */
+	if (!cryp->header_in) {
+		/* Wait for completion */
+		err = stm32_cryp_wait_busy(cryp);
+		if (err) {
+			dev_err(cryp->dev, "Timeout (gcm/ccm header)\n");
+			stm32_cryp_write(cryp, cryp->caps->imsc, 0);
+			stm32_cryp_finish_req(cryp, err);
+			return;
+		}
+
+		if (stm32_cryp_get_input_text_len(cryp)) {
+			/* Phase 3 : payload */
+			cfg = stm32_cryp_read(cryp, cryp->caps->cr);
+			cfg &= ~CR_CRYPEN;
+			stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+			cfg &= ~CR_PH_MASK;
+			cfg |= CR_PH_PAYLOAD | CR_CRYPEN;
+			stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+		} else {
+			/*
+			 * Phase 4 : tag.
+			 * Nothing to read, nothing to write, caller have to
+			 * end request
+			 */
+		}
+	}
+}
+
+static void stm32_cryp_write_ccm_first_header(struct stm32_cryp *cryp)
+{
+	size_t written;
+	size_t len;
+	u32 alen = cryp->areq->assoclen;
+	u32 block[AES_BLOCK_32] = {0};
+	u8 *b8 = (u8 *)block;
+
+	if (alen <= 65280) {
+		/* Write first u32 of B1 */
+		b8[0] = (alen >> 8) & 0xFF;
+		b8[1] = alen & 0xFF;
+		len = 2;
+	} else {
+		/* Build the two first u32 of B1 */
+		b8[0] = 0xFF;
+		b8[1] = 0xFE;
+		b8[2] = (alen & 0xFF000000) >> 24;
+		b8[3] = (alen & 0x00FF0000) >> 16;
+		b8[4] = (alen & 0x0000FF00) >> 8;
+		b8[5] = alen & 0x000000FF;
+		len = 6;
+	}
+
+	written = min_t(size_t, AES_BLOCK_SIZE - len, alen);
+
+	scatterwalk_copychunks((char *)block + len, &cryp->in_walk, written, 0);
+
+	writesl(cryp->regs + cryp->caps->din, block, AES_BLOCK_32);
+
+	cryp->header_in -= written;
+
+	stm32_crypt_gcmccm_end_header(cryp);
+}
+
+static int stm32_cryp_ccm_init(struct stm32_cryp *cryp, u32 cfg)
+{
+	int ret;
+	u32 iv_32[AES_BLOCK_32], b0_32[AES_BLOCK_32];
+	u8 *iv = (u8 *)iv_32, *b0 = (u8 *)b0_32;
+	__be32 *bd;
+	u32 *d;
+	unsigned int i, textlen;
+
+	/* Phase 1 : init. Firstly set the CTR value to 1 (not 0) */
+	memcpy(iv, cryp->areq->iv, AES_BLOCK_SIZE);
+	memset(iv + AES_BLOCK_SIZE - 1 - iv[0], 0, iv[0] + 1);
+	iv[AES_BLOCK_SIZE - 1] = 1;
+	stm32_cryp_hw_write_iv(cryp, (__be32 *)iv);
+
+	/* Build B0 */
+	memcpy(b0, iv, AES_BLOCK_SIZE);
+
+	b0[0] |= (8 * ((cryp->authsize - 2) / 2));
+
+	if (cryp->areq->assoclen)
+		b0[0] |= 0x40;
+
+	textlen = stm32_cryp_get_input_text_len(cryp);
+
+	b0[AES_BLOCK_SIZE - 2] = textlen >> 8;
+	b0[AES_BLOCK_SIZE - 1] = textlen & 0xFF;
+
+	/* Enable HW */
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg | CR_PH_INIT | CR_CRYPEN);
+
+	/* Write B0 */
+	d = (u32 *)b0;
+	bd = (__be32 *)b0;
+
+	for (i = 0; i < AES_BLOCK_32; i++) {
+		u32 xd = d[i];
+
+		if (!cryp->caps->padding_wa)
+			xd = be32_to_cpu(bd[i]);
+		stm32_cryp_write(cryp, cryp->caps->din, xd);
+	}
+
+	/* Wait for end of processing */
+	ret = stm32_cryp_wait_enable(cryp);
+	if (ret) {
+		dev_err(cryp->dev, "Timeout (ccm init)\n");
+		return ret;
+	}
+
+	/* Prepare next phase */
+	if (cryp->areq->assoclen) {
+		cfg |= CR_PH_HEADER | CR_CRYPEN;
+		stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+		/* Write first (special) block (may move to next phase [payload]) */
+		stm32_cryp_write_ccm_first_header(cryp);
+	} else if (stm32_cryp_get_input_text_len(cryp)) {
+		cfg |= CR_PH_PAYLOAD;
+		stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+	}
+
+	return 0;
+}
+
+static int stm32_cryp_hw_init(struct stm32_cryp *cryp)
+{
+	int ret;
+	u32 cfg, hw_mode;
+
+	pm_runtime_get_sync(cryp->dev);
+
+	/* Disable interrupt */
+	stm32_cryp_write(cryp, cryp->caps->imsc, 0);
+
+	/* Set configuration */
+	cfg = CR_DATA8 | CR_FFLUSH;
+
+	switch (cryp->ctx->keylen) {
+	case AES_KEYSIZE_128:
+		cfg |= CR_KEY128;
+		break;
+
+	case AES_KEYSIZE_192:
+		cfg |= CR_KEY192;
+		break;
+
+	default:
+	case AES_KEYSIZE_256:
+		cfg |= CR_KEY256;
+		break;
+	}
+
+	hw_mode = stm32_cryp_get_hw_mode(cryp);
+	if (hw_mode == CR_AES_UNKNOWN)
+		return -EINVAL;
+
+	/* AES ECB/CBC decrypt: run key preparation first */
+	if (is_decrypt(cryp) &&
+	    ((hw_mode == CR_AES_ECB) || (hw_mode == CR_AES_CBC))) {
+		/* Configure in key preparation mode */
+		if (cryp->caps->kp_mode)
+			stm32_cryp_write(cryp, cryp->caps->cr,
+				cfg | CR_AES_KP);
+		else
+			stm32_cryp_write(cryp,
+				cryp->caps->cr, cfg | CR_AES_ECB | CR_KSE);
+
+		/* Set key only after full configuration done */
+		stm32_cryp_hw_write_key(cryp);
+
+		/* Start prepare key */
+		stm32_cryp_enable(cryp);
+		/* Wait for end of processing */
+		ret = stm32_cryp_wait_busy(cryp);
+		if (ret) {
+			dev_err(cryp->dev, "Timeout (key preparation)\n");
+			return ret;
+		}
+
+		cfg |= hw_mode | CR_DEC_NOT_ENC;
+
+		/* Apply updated config (Decrypt + algo) and flush */
+		stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+	} else {
+		cfg |= hw_mode;
+		if (is_decrypt(cryp))
+			cfg |= CR_DEC_NOT_ENC;
+
+		/* Apply config and flush */
+		stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+		/* Set key only after configuration done */
+		stm32_cryp_hw_write_key(cryp);
+	}
+
+	switch (hw_mode) {
+	case CR_AES_GCM:
+	case CR_AES_CCM:
+		/* Phase 1 : init */
+		if (hw_mode == CR_AES_CCM)
+			ret = stm32_cryp_ccm_init(cryp, cfg);
+		else
+			ret = stm32_cryp_gcm_init(cryp, cfg);
+
+		if (ret)
+			return ret;
+
+		break;
+
+	case CR_DES_CBC:
+	case CR_TDES_CBC:
+	case CR_AES_CBC:
+	case CR_AES_CTR:
+		stm32_cryp_hw_write_iv(cryp, (__be32 *)cryp->req->iv);
+		break;
+
+	default:
+		break;
+	}
+
+	/* Enable now */
+	stm32_cryp_enable(cryp);
+
+	return 0;
+}
+
+static void stm32_cryp_finish_req(struct stm32_cryp *cryp, int err)
+{
+	if (!err && (is_gcm(cryp) || is_ccm(cryp)))
+		/* Phase 4 : output tag */
+		err = stm32_cryp_read_auth_tag(cryp);
+
+	if (!err && (!(is_gcm(cryp) || is_ccm(cryp) || is_ecb(cryp))))
+		stm32_cryp_get_iv(cryp);
+
+	pm_runtime_mark_last_busy(cryp->dev);
+	pm_runtime_put_autosuspend(cryp->dev);
+
+	if (is_gcm(cryp) || is_ccm(cryp))
+		crypto_finalize_aead_request(cryp->engine, cryp->areq, err);
+	else
+		crypto_finalize_skcipher_request(cryp->engine, cryp->req,
+						   err);
+}
+
+static int stm32_cryp_cpu_start(struct stm32_cryp *cryp)
+{
+	/* Enable interrupt and let the IRQ handler do everything */
+	stm32_cryp_write(cryp, cryp->caps->imsc, IMSCR_IN | IMSCR_OUT);
+
+	return 0;
+}
+
+static int stm32_cryp_cipher_one_req(struct crypto_engine *engine, void *areq);
+
+static int stm32_cryp_init_tfm(struct crypto_skcipher *tfm)
+{
+	crypto_skcipher_set_reqsize(tfm, sizeof(struct stm32_cryp_reqctx));
+
+	return 0;
+}
+
+static int stm32_cryp_aead_one_req(struct crypto_engine *engine, void *areq);
+
+static int stm32_cryp_aes_aead_init(struct crypto_aead *tfm)
+{
+	tfm->reqsize = sizeof(struct stm32_cryp_reqctx);
+
+	return 0;
+}
+
+static int stm32_cryp_crypt(struct skcipher_request *req, unsigned long mode)
+{
+	struct stm32_cryp_ctx *ctx = crypto_skcipher_ctx(
+			crypto_skcipher_reqtfm(req));
+	struct stm32_cryp_reqctx *rctx = skcipher_request_ctx(req);
+	struct stm32_cryp *cryp = stm32_cryp_find_dev(ctx);
+
+	if (!cryp)
+		return -ENODEV;
+
+	rctx->mode = mode;
+
+	return crypto_transfer_skcipher_request_to_engine(cryp->engine, req);
+}
+
+static int stm32_cryp_aead_crypt(struct aead_request *req, unsigned long mode)
+{
+	struct stm32_cryp_ctx *ctx = crypto_aead_ctx(crypto_aead_reqtfm(req));
+	struct stm32_cryp_reqctx *rctx = aead_request_ctx(req);
+	struct stm32_cryp *cryp = stm32_cryp_find_dev(ctx);
+
+	if (!cryp)
+		return -ENODEV;
+
+	rctx->mode = mode;
+
+	return crypto_transfer_aead_request_to_engine(cryp->engine, req);
+}
+
+static int stm32_cryp_setkey(struct crypto_skcipher *tfm, const u8 *key,
+			     unsigned int keylen)
+{
+	struct stm32_cryp_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+	memcpy(ctx->key, key, keylen);
+	ctx->keylen = keylen;
+
+	return 0;
+}
+
+static int stm32_cryp_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
+				 unsigned int keylen)
+{
+	if (keylen != AES_KEYSIZE_128 && keylen != AES_KEYSIZE_192 &&
+	    keylen != AES_KEYSIZE_256)
+		return -EINVAL;
+	else
+		return stm32_cryp_setkey(tfm, key, keylen);
+}
+
+static int stm32_cryp_des_setkey(struct crypto_skcipher *tfm, const u8 *key,
+				 unsigned int keylen)
+{
+	return verify_skcipher_des_key(tfm, key) ?:
+	       stm32_cryp_setkey(tfm, key, keylen);
+}
+
+static int stm32_cryp_tdes_setkey(struct crypto_skcipher *tfm, const u8 *key,
+				  unsigned int keylen)
+{
+	return verify_skcipher_des3_key(tfm, key) ?:
+	       stm32_cryp_setkey(tfm, key, keylen);
+}
+
+static int stm32_cryp_aes_aead_setkey(struct crypto_aead *tfm, const u8 *key,
+				      unsigned int keylen)
+{
+	struct stm32_cryp_ctx *ctx = crypto_aead_ctx(tfm);
+
+	if (keylen != AES_KEYSIZE_128 && keylen != AES_KEYSIZE_192 &&
+	    keylen != AES_KEYSIZE_256)
+		return -EINVAL;
+
+	memcpy(ctx->key, key, keylen);
+	ctx->keylen = keylen;
+
+	return 0;
+}
+
+static int stm32_cryp_aes_gcm_setauthsize(struct crypto_aead *tfm,
+					  unsigned int authsize)
+{
+	switch (authsize) {
+	case 4:
+	case 8:
+	case 12:
+	case 13:
+	case 14:
+	case 15:
+	case 16:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int stm32_cryp_aes_ccm_setauthsize(struct crypto_aead *tfm,
+					  unsigned int authsize)
+{
+	switch (authsize) {
+	case 4:
+	case 6:
+	case 8:
+	case 10:
+	case 12:
+	case 14:
+	case 16:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int stm32_cryp_aes_ecb_encrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen % AES_BLOCK_SIZE)
+		return -EINVAL;
+
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_AES | FLG_ECB | FLG_ENCRYPT);
+}
+
+static int stm32_cryp_aes_ecb_decrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen % AES_BLOCK_SIZE)
+		return -EINVAL;
+
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_AES | FLG_ECB);
+}
+
+static int stm32_cryp_aes_cbc_encrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen % AES_BLOCK_SIZE)
+		return -EINVAL;
+
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_AES | FLG_CBC | FLG_ENCRYPT);
+}
+
+static int stm32_cryp_aes_cbc_decrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen % AES_BLOCK_SIZE)
+		return -EINVAL;
+
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_AES | FLG_CBC);
+}
+
+static int stm32_cryp_aes_ctr_encrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_AES | FLG_CTR | FLG_ENCRYPT);
+}
+
+static int stm32_cryp_aes_ctr_decrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_AES | FLG_CTR);
+}
+
+static int stm32_cryp_aes_gcm_encrypt(struct aead_request *req)
+{
+	return stm32_cryp_aead_crypt(req, FLG_AES | FLG_GCM | FLG_ENCRYPT);
+}
+
+static int stm32_cryp_aes_gcm_decrypt(struct aead_request *req)
+{
+	return stm32_cryp_aead_crypt(req, FLG_AES | FLG_GCM);
+}
+
+static inline int crypto_ccm_check_iv(const u8 *iv)
+{
+	/* 2 <= L <= 8, so 1 <= L' <= 7. */
+	if (iv[0] < 1 || iv[0] > 7)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int stm32_cryp_aes_ccm_encrypt(struct aead_request *req)
+{
+	int err;
+
+	err = crypto_ccm_check_iv(req->iv);
+	if (err)
+		return err;
+
+	return stm32_cryp_aead_crypt(req, FLG_AES | FLG_CCM | FLG_ENCRYPT);
+}
+
+static int stm32_cryp_aes_ccm_decrypt(struct aead_request *req)
+{
+	int err;
+
+	err = crypto_ccm_check_iv(req->iv);
+	if (err)
+		return err;
+
+	return stm32_cryp_aead_crypt(req, FLG_AES | FLG_CCM);
+}
+
+static int stm32_cryp_des_ecb_encrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen % DES_BLOCK_SIZE)
+		return -EINVAL;
+
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_DES | FLG_ECB | FLG_ENCRYPT);
+}
+
+static int stm32_cryp_des_ecb_decrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen % DES_BLOCK_SIZE)
+		return -EINVAL;
+
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_DES | FLG_ECB);
+}
+
+static int stm32_cryp_des_cbc_encrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen % DES_BLOCK_SIZE)
+		return -EINVAL;
+
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_DES | FLG_CBC | FLG_ENCRYPT);
+}
+
+static int stm32_cryp_des_cbc_decrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen % DES_BLOCK_SIZE)
+		return -EINVAL;
+
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_DES | FLG_CBC);
+}
+
+static int stm32_cryp_tdes_ecb_encrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen % DES_BLOCK_SIZE)
+		return -EINVAL;
+
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_TDES | FLG_ECB | FLG_ENCRYPT);
+}
+
+static int stm32_cryp_tdes_ecb_decrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen % DES_BLOCK_SIZE)
+		return -EINVAL;
+
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_TDES | FLG_ECB);
+}
+
+static int stm32_cryp_tdes_cbc_encrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen % DES_BLOCK_SIZE)
+		return -EINVAL;
+
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_TDES | FLG_CBC | FLG_ENCRYPT);
+}
+
+static int stm32_cryp_tdes_cbc_decrypt(struct skcipher_request *req)
+{
+	if (req->cryptlen % DES_BLOCK_SIZE)
+		return -EINVAL;
+
+	if (req->cryptlen == 0)
+		return 0;
+
+	return stm32_cryp_crypt(req, FLG_TDES | FLG_CBC);
+}
+
+static int stm32_cryp_prepare_req(struct skcipher_request *req,
+				  struct aead_request *areq)
+{
+	struct stm32_cryp_ctx *ctx;
+	struct stm32_cryp *cryp;
+	struct stm32_cryp_reqctx *rctx;
+	struct scatterlist *in_sg;
+	int ret;
+
+	if (!req && !areq)
+		return -EINVAL;
+
+	ctx = req ? crypto_skcipher_ctx(crypto_skcipher_reqtfm(req)) :
+		    crypto_aead_ctx(crypto_aead_reqtfm(areq));
+
+	cryp = ctx->cryp;
+
+	rctx = req ? skcipher_request_ctx(req) : aead_request_ctx(areq);
+	rctx->mode &= FLG_MODE_MASK;
+
+	ctx->cryp = cryp;
+
+	cryp->flags = (cryp->flags & ~FLG_MODE_MASK) | rctx->mode;
+	cryp->hw_blocksize = is_aes(cryp) ? AES_BLOCK_SIZE : DES_BLOCK_SIZE;
+	cryp->ctx = ctx;
+
+	if (req) {
+		cryp->req = req;
+		cryp->areq = NULL;
+		cryp->header_in = 0;
+		cryp->payload_in = req->cryptlen;
+		cryp->payload_out = req->cryptlen;
+		cryp->authsize = 0;
+	} else {
+		/*
+		 * Length of input and output data:
+		 * Encryption case:
+		 *  INPUT  = AssocData   ||     PlainText
+		 *          <- assoclen ->  <- cryptlen ->
+		 *
+		 *  OUTPUT = AssocData    ||   CipherText   ||      AuthTag
+		 *          <- assoclen ->  <-- cryptlen -->  <- authsize ->
+		 *
+		 * Decryption case:
+		 *  INPUT  =  AssocData     ||    CipherTex   ||       AuthTag
+		 *          <- assoclen --->  <---------- cryptlen ---------->
+		 *
+		 *  OUTPUT = AssocData    ||               PlainText
+		 *          <- assoclen ->  <- cryptlen - authsize ->
+		 */
+		cryp->areq = areq;
+		cryp->req = NULL;
+		cryp->authsize = crypto_aead_authsize(crypto_aead_reqtfm(areq));
+		if (is_encrypt(cryp)) {
+			cryp->payload_in = areq->cryptlen;
+			cryp->header_in = areq->assoclen;
+			cryp->payload_out = areq->cryptlen;
+		} else {
+			cryp->payload_in = areq->cryptlen - cryp->authsize;
+			cryp->header_in = areq->assoclen;
+			cryp->payload_out = cryp->payload_in;
+		}
+	}
+
+	in_sg = req ? req->src : areq->src;
+	scatterwalk_start(&cryp->in_walk, in_sg);
+
+	cryp->out_sg = req ? req->dst : areq->dst;
+	scatterwalk_start(&cryp->out_walk, cryp->out_sg);
+
+	if (is_gcm(cryp) || is_ccm(cryp)) {
+		/* In output, jump after assoc data */
+		scatterwalk_copychunks(NULL, &cryp->out_walk, cryp->areq->assoclen, 2);
+	}
+
+	if (is_ctr(cryp))
+		memset(cryp->last_ctr, 0, sizeof(cryp->last_ctr));
+
+	ret = stm32_cryp_hw_init(cryp);
+	return ret;
+}
+
+static int stm32_cryp_cipher_one_req(struct crypto_engine *engine, void *areq)
+{
+	struct skcipher_request *req = container_of(areq,
+						      struct skcipher_request,
+						      base);
+	struct stm32_cryp_ctx *ctx = crypto_skcipher_ctx(
+			crypto_skcipher_reqtfm(req));
+	struct stm32_cryp *cryp = ctx->cryp;
+
+	if (!cryp)
+		return -ENODEV;
+
+	return stm32_cryp_prepare_req(req, NULL) ?:
+	       stm32_cryp_cpu_start(cryp);
+}
+
+static int stm32_cryp_aead_one_req(struct crypto_engine *engine, void *areq)
+{
+	struct aead_request *req = container_of(areq, struct aead_request,
+						base);
+	struct stm32_cryp_ctx *ctx = crypto_aead_ctx(crypto_aead_reqtfm(req));
+	struct stm32_cryp *cryp = ctx->cryp;
+	int err;
+
+	if (!cryp)
+		return -ENODEV;
+
+	err = stm32_cryp_prepare_req(NULL, req);
+	if (err)
+		return err;
+
+	if (unlikely(!cryp->payload_in && !cryp->header_in)) {
+		/* No input data to process: get tag and finish */
+		stm32_cryp_finish_req(cryp, 0);
+		return 0;
+	}
+
+	return stm32_cryp_cpu_start(cryp);
+}
+
+static int stm32_cryp_read_auth_tag(struct stm32_cryp *cryp)
+{
+	u32 cfg, size_bit;
+	unsigned int i;
+	int ret = 0;
+
+	/* Update Config */
+	cfg = stm32_cryp_read(cryp, cryp->caps->cr);
+
+	cfg &= ~CR_PH_MASK;
+	cfg |= CR_PH_FINAL;
+	cfg &= ~CR_DEC_NOT_ENC;
+	cfg |= CR_CRYPEN;
+
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+	if (is_gcm(cryp)) {
+		/* GCM: write aad and payload size (in bits) */
+		size_bit = cryp->areq->assoclen * 8;
+		if (cryp->caps->swap_final)
+			size_bit = (__force u32)cpu_to_be32(size_bit);
+
+		stm32_cryp_write(cryp, cryp->caps->din, 0);
+		stm32_cryp_write(cryp, cryp->caps->din, size_bit);
+
+		size_bit = is_encrypt(cryp) ? cryp->areq->cryptlen :
+				cryp->areq->cryptlen - cryp->authsize;
+		size_bit *= 8;
+		if (cryp->caps->swap_final)
+			size_bit = (__force u32)cpu_to_be32(size_bit);
+
+		stm32_cryp_write(cryp, cryp->caps->din, 0);
+		stm32_cryp_write(cryp, cryp->caps->din, size_bit);
+	} else {
+		/* CCM: write CTR0 */
+		u32 iv32[AES_BLOCK_32];
+		u8 *iv = (u8 *)iv32;
+		__be32 *biv = (__be32 *)iv32;
+
+		memcpy(iv, cryp->areq->iv, AES_BLOCK_SIZE);
+		memset(iv + AES_BLOCK_SIZE - 1 - iv[0], 0, iv[0] + 1);
+
+		for (i = 0; i < AES_BLOCK_32; i++) {
+			u32 xiv = iv32[i];
+
+			if (!cryp->caps->padding_wa)
+				xiv = be32_to_cpu(biv[i]);
+			stm32_cryp_write(cryp, cryp->caps->din, xiv);
+		}
+	}
+
+	/* Wait for output data */
+	ret = stm32_cryp_wait_output(cryp);
+	if (ret) {
+		dev_err(cryp->dev, "Timeout (read tag)\n");
+		return ret;
+	}
+
+	if (is_encrypt(cryp)) {
+		u32 out_tag[AES_BLOCK_32];
+
+		/* Get and write tag */
+		readsl(cryp->regs + cryp->caps->dout, out_tag, AES_BLOCK_32);
+		scatterwalk_copychunks(out_tag, &cryp->out_walk, cryp->authsize, 1);
+	} else {
+		/* Get and check tag */
+		u32 in_tag[AES_BLOCK_32], out_tag[AES_BLOCK_32];
+
+		scatterwalk_copychunks(in_tag, &cryp->in_walk, cryp->authsize, 0);
+		readsl(cryp->regs + cryp->caps->dout, out_tag, AES_BLOCK_32);
+
+		if (crypto_memneq(in_tag, out_tag, cryp->authsize))
+			ret = -EBADMSG;
+	}
+
+	/* Disable cryp */
+	cfg &= ~CR_CRYPEN;
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+	return ret;
+}
+
+static void stm32_cryp_check_ctr_counter(struct stm32_cryp *cryp)
+{
+	u32 cr;
+
+	if (unlikely(cryp->last_ctr[3] == cpu_to_be32(0xFFFFFFFF))) {
+		/*
+		 * In this case, we need to increment manually the ctr counter,
+		 * as HW doesn't handle the U32 carry.
+		 */
+		crypto_inc((u8 *)cryp->last_ctr, sizeof(cryp->last_ctr));
+
+		cr = stm32_cryp_read(cryp, cryp->caps->cr);
+		stm32_cryp_write(cryp, cryp->caps->cr, cr & ~CR_CRYPEN);
+
+		stm32_cryp_hw_write_iv(cryp, cryp->last_ctr);
+
+		stm32_cryp_write(cryp, cryp->caps->cr, cr);
+	}
+
+	/* The IV registers are BE  */
+	cryp->last_ctr[0] = cpu_to_be32(stm32_cryp_read(cryp, cryp->caps->iv0l));
+	cryp->last_ctr[1] = cpu_to_be32(stm32_cryp_read(cryp, cryp->caps->iv0r));
+	cryp->last_ctr[2] = cpu_to_be32(stm32_cryp_read(cryp, cryp->caps->iv1l));
+	cryp->last_ctr[3] = cpu_to_be32(stm32_cryp_read(cryp, cryp->caps->iv1r));
+}
+
+static void stm32_cryp_irq_read_data(struct stm32_cryp *cryp)
+{
+	u32 block[AES_BLOCK_32];
+
+	readsl(cryp->regs + cryp->caps->dout, block, cryp->hw_blocksize / sizeof(u32));
+	scatterwalk_copychunks(block, &cryp->out_walk, min_t(size_t, cryp->hw_blocksize,
+							     cryp->payload_out), 1);
+	cryp->payload_out -= min_t(size_t, cryp->hw_blocksize,
+				   cryp->payload_out);
+}
+
+static void stm32_cryp_irq_write_block(struct stm32_cryp *cryp)
+{
+	u32 block[AES_BLOCK_32] = {0};
+
+	scatterwalk_copychunks(block, &cryp->in_walk, min_t(size_t, cryp->hw_blocksize,
+							    cryp->payload_in), 0);
+	writesl(cryp->regs + cryp->caps->din, block, cryp->hw_blocksize / sizeof(u32));
+	cryp->payload_in -= min_t(size_t, cryp->hw_blocksize, cryp->payload_in);
+}
+
+static void stm32_cryp_irq_write_gcm_padded_data(struct stm32_cryp *cryp)
+{
+	int err;
+	u32 cfg, block[AES_BLOCK_32] = {0};
+	unsigned int i;
+
+	/* 'Special workaround' procedure described in the datasheet */
+
+	/* a) disable ip */
+	stm32_cryp_write(cryp, cryp->caps->imsc, 0);
+	cfg = stm32_cryp_read(cryp, cryp->caps->cr);
+	cfg &= ~CR_CRYPEN;
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+	/* b) Update IV1R */
+	stm32_cryp_write(cryp, cryp->caps->iv1r, cryp->gcm_ctr - 2);
+
+	/* c) change mode to CTR */
+	cfg &= ~CR_ALGO_MASK;
+	cfg |= CR_AES_CTR;
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+	/* a) enable IP */
+	cfg |= CR_CRYPEN;
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+	/* b) pad and write the last block */
+	stm32_cryp_irq_write_block(cryp);
+	/* wait end of process */
+	err = stm32_cryp_wait_output(cryp);
+	if (err) {
+		dev_err(cryp->dev, "Timeout (write gcm last data)\n");
+		return stm32_cryp_finish_req(cryp, err);
+	}
+
+	/* c) get and store encrypted data */
+	/*
+	 * Same code as stm32_cryp_irq_read_data(), but we want to store
+	 * block value
+	 */
+	readsl(cryp->regs + cryp->caps->dout, block, cryp->hw_blocksize / sizeof(u32));
+
+	scatterwalk_copychunks(block, &cryp->out_walk, min_t(size_t, cryp->hw_blocksize,
+							     cryp->payload_out), 1);
+	cryp->payload_out -= min_t(size_t, cryp->hw_blocksize,
+				   cryp->payload_out);
+
+	/* d) change mode back to AES GCM */
+	cfg &= ~CR_ALGO_MASK;
+	cfg |= CR_AES_GCM;
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+	/* e) change phase to Final */
+	cfg &= ~CR_PH_MASK;
+	cfg |= CR_PH_FINAL;
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+	/* f) write padded data */
+	writesl(cryp->regs + cryp->caps->din, block, AES_BLOCK_32);
+
+	/* g) Empty fifo out */
+	err = stm32_cryp_wait_output(cryp);
+	if (err) {
+		dev_err(cryp->dev, "Timeout (write gcm padded data)\n");
+		return stm32_cryp_finish_req(cryp, err);
+	}
+
+	for (i = 0; i < AES_BLOCK_32; i++)
+		stm32_cryp_read(cryp, cryp->caps->dout);
+
+	/* h) run the he normal Final phase */
+	stm32_cryp_finish_req(cryp, 0);
+}
+
+static void stm32_cryp_irq_set_npblb(struct stm32_cryp *cryp)
+{
+	u32 cfg;
+
+	/* disable ip, set NPBLB and reneable ip */
+	cfg = stm32_cryp_read(cryp, cryp->caps->cr);
+	cfg &= ~CR_CRYPEN;
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+	cfg |= (cryp->hw_blocksize - cryp->payload_in) << CR_NBPBL_SHIFT;
+	cfg |= CR_CRYPEN;
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+}
+
+static void stm32_cryp_irq_write_ccm_padded_data(struct stm32_cryp *cryp)
+{
+	int err = 0;
+	u32 cfg, iv1tmp;
+	u32 cstmp1[AES_BLOCK_32], cstmp2[AES_BLOCK_32];
+	u32 block[AES_BLOCK_32] = {0};
+	unsigned int i;
+
+	/* 'Special workaround' procedure described in the datasheet */
+
+	/* a) disable ip */
+	stm32_cryp_write(cryp, cryp->caps->imsc, 0);
+
+	cfg = stm32_cryp_read(cryp, cryp->caps->cr);
+	cfg &= ~CR_CRYPEN;
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+	/* b) get IV1 from CRYP_CSGCMCCM7 */
+	iv1tmp = stm32_cryp_read(cryp, CRYP_CSGCMCCM0R + 7 * 4);
+
+	/* c) Load CRYP_CSGCMCCMxR */
+	for (i = 0; i < ARRAY_SIZE(cstmp1); i++)
+		cstmp1[i] = stm32_cryp_read(cryp, CRYP_CSGCMCCM0R + i * 4);
+
+	/* d) Write IV1R */
+	stm32_cryp_write(cryp, cryp->caps->iv1r, iv1tmp);
+
+	/* e) change mode to CTR */
+	cfg &= ~CR_ALGO_MASK;
+	cfg |= CR_AES_CTR;
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+	/* a) enable IP */
+	cfg |= CR_CRYPEN;
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+	/* b) pad and write the last block */
+	stm32_cryp_irq_write_block(cryp);
+	/* wait end of process */
+	err = stm32_cryp_wait_output(cryp);
+	if (err) {
+		dev_err(cryp->dev, "Timeout (write ccm padded data)\n");
+		return stm32_cryp_finish_req(cryp, err);
+	}
+
+	/* c) get and store decrypted data */
+	/*
+	 * Same code as stm32_cryp_irq_read_data(), but we want to store
+	 * block value
+	 */
+	readsl(cryp->regs + cryp->caps->dout, block, cryp->hw_blocksize / sizeof(u32));
+
+	scatterwalk_copychunks(block, &cryp->out_walk, min_t(size_t, cryp->hw_blocksize,
+							     cryp->payload_out), 1);
+	cryp->payload_out -= min_t(size_t, cryp->hw_blocksize, cryp->payload_out);
+
+	/* d) Load again CRYP_CSGCMCCMxR */
+	for (i = 0; i < ARRAY_SIZE(cstmp2); i++)
+		cstmp2[i] = stm32_cryp_read(cryp, CRYP_CSGCMCCM0R + i * 4);
+
+	/* e) change mode back to AES CCM */
+	cfg &= ~CR_ALGO_MASK;
+	cfg |= CR_AES_CCM;
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+	/* f) change phase to header */
+	cfg &= ~CR_PH_MASK;
+	cfg |= CR_PH_HEADER;
+	stm32_cryp_write(cryp, cryp->caps->cr, cfg);
+
+	/* g) XOR and write padded data */
+	for (i = 0; i < ARRAY_SIZE(block); i++) {
+		block[i] ^= cstmp1[i];
+		block[i] ^= cstmp2[i];
+		stm32_cryp_write(cryp, cryp->caps->din, block[i]);
+	}
+
+	/* h) wait for completion */
+	err = stm32_cryp_wait_busy(cryp);
+	if (err)
+		dev_err(cryp->dev, "Timeout (write ccm padded data)\n");
+
+	/* i) run the he normal Final phase */
+	stm32_cryp_finish_req(cryp, err);
+}
+
+static void stm32_cryp_irq_write_data(struct stm32_cryp *cryp)
+{
+	if (unlikely(!cryp->payload_in)) {
+		dev_warn(cryp->dev, "No more data to process\n");
+		return;
+	}
+
+	if (unlikely(cryp->payload_in < AES_BLOCK_SIZE &&
+		     (stm32_cryp_get_hw_mode(cryp) == CR_AES_GCM) &&
+		     is_encrypt(cryp))) {
+		/* Padding for AES GCM encryption */
+		if (cryp->caps->padding_wa) {
+			/* Special case 1 */
+			stm32_cryp_irq_write_gcm_padded_data(cryp);
+			return;
+		}
+
+		/* Setting padding bytes (NBBLB) */
+		stm32_cryp_irq_set_npblb(cryp);
+	}
+
+	if (unlikely((cryp->payload_in < AES_BLOCK_SIZE) &&
+		     (stm32_cryp_get_hw_mode(cryp) == CR_AES_CCM) &&
+		     is_decrypt(cryp))) {
+		/* Padding for AES CCM decryption */
+		if (cryp->caps->padding_wa) {
+			/* Special case 2 */
+			stm32_cryp_irq_write_ccm_padded_data(cryp);
+			return;
+		}
+
+		/* Setting padding bytes (NBBLB) */
+		stm32_cryp_irq_set_npblb(cryp);
+	}
+
+	if (is_aes(cryp) && is_ctr(cryp))
+		stm32_cryp_check_ctr_counter(cryp);
+
+	stm32_cryp_irq_write_block(cryp);
+}
+
+static void stm32_cryp_irq_write_gcmccm_header(struct stm32_cryp *cryp)
+{
+	u32 block[AES_BLOCK_32] = {0};
+	size_t written;
+
+	written = min_t(size_t, AES_BLOCK_SIZE, cryp->header_in);
+
+	scatterwalk_copychunks(block, &cryp->in_walk, written, 0);
+
+	writesl(cryp->regs + cryp->caps->din, block, AES_BLOCK_32);
+
+	cryp->header_in -= written;
+
+	stm32_crypt_gcmccm_end_header(cryp);
+}
+
+static irqreturn_t stm32_cryp_irq_thread(int irq, void *arg)
+{
+	struct stm32_cryp *cryp = arg;
+	u32 ph;
+	u32 it_mask = stm32_cryp_read(cryp, cryp->caps->imsc);
+
+	if (cryp->irq_status & MISR_OUT)
+		/* Output FIFO IRQ: read data */
+		stm32_cryp_irq_read_data(cryp);
+
+	if (cryp->irq_status & MISR_IN) {
+		if (is_gcm(cryp) || is_ccm(cryp)) {
+			ph = stm32_cryp_read(cryp, cryp->caps->cr) & CR_PH_MASK;
+			if (unlikely(ph == CR_PH_HEADER))
+				/* Write Header */
+				stm32_cryp_irq_write_gcmccm_header(cryp);
+			else
+				/* Input FIFO IRQ: write data */
+				stm32_cryp_irq_write_data(cryp);
+			if (is_gcm(cryp))
+				cryp->gcm_ctr++;
+		} else {
+			/* Input FIFO IRQ: write data */
+			stm32_cryp_irq_write_data(cryp);
+		}
+	}
+
+	/* Mask useless interrupts */
+	if (!cryp->payload_in && !cryp->header_in)
+		it_mask &= ~IMSCR_IN;
+	if (!cryp->payload_out)
+		it_mask &= ~IMSCR_OUT;
+	stm32_cryp_write(cryp, cryp->caps->imsc, it_mask);
+
+	if (!cryp->payload_in && !cryp->header_in && !cryp->payload_out)
+		stm32_cryp_finish_req(cryp, 0);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t stm32_cryp_irq(int irq, void *arg)
+{
+	struct stm32_cryp *cryp = arg;
+
+	cryp->irq_status = stm32_cryp_read(cryp, cryp->caps->mis);
+
+	return IRQ_WAKE_THREAD;
+}
+
+static struct skcipher_engine_alg crypto_algs[] = {
+{
+	.base = {
+		.base.cra_name		= "ecb(aes)",
+		.base.cra_driver_name	= "stm32-ecb-aes",
+		.base.cra_priority	= 200,
+		.base.cra_flags		= CRYPTO_ALG_ASYNC,
+		.base.cra_blocksize	= AES_BLOCK_SIZE,
+		.base.cra_ctxsize	= sizeof(struct stm32_cryp_ctx),
+		.base.cra_alignmask	= 0,
+		.base.cra_module	= THIS_MODULE,
+
+		.init			= stm32_cryp_init_tfm,
+		.min_keysize		= AES_MIN_KEY_SIZE,
+		.max_keysize		= AES_MAX_KEY_SIZE,
+		.setkey			= stm32_cryp_aes_setkey,
+		.encrypt		= stm32_cryp_aes_ecb_encrypt,
+		.decrypt		= stm32_cryp_aes_ecb_decrypt,
+	},
+	.op = {
+		.do_one_request = stm32_cryp_cipher_one_req,
+	},
+},
+{
+	.base = {
+		.base.cra_name		= "cbc(aes)",
+		.base.cra_driver_name	= "stm32-cbc-aes",
+		.base.cra_priority	= 200,
+		.base.cra_flags		= CRYPTO_ALG_ASYNC,
+		.base.cra_blocksize	= AES_BLOCK_SIZE,
+		.base.cra_ctxsize	= sizeof(struct stm32_cryp_ctx),
+		.base.cra_alignmask	= 0,
+		.base.cra_module	= THIS_MODULE,
+
+		.init			= stm32_cryp_init_tfm,
+		.min_keysize		= AES_MIN_KEY_SIZE,
+		.max_keysize		= AES_MAX_KEY_SIZE,
+		.ivsize			= AES_BLOCK_SIZE,
+		.setkey			= stm32_cryp_aes_setkey,
+		.encrypt		= stm32_cryp_aes_cbc_encrypt,
+		.decrypt		= stm32_cryp_aes_cbc_decrypt,
+	},
+	.op = {
+		.do_one_request = stm32_cryp_cipher_one_req,
+	},
+},
+{
+	.base = {
+		.base.cra_name		= "ctr(aes)",
+		.base.cra_driver_name	= "stm32-ctr-aes",
+		.base.cra_priority	= 200,
+		.base.cra_flags		= CRYPTO_ALG_ASYNC,
+		.base.cra_blocksize	= 1,
+		.base.cra_ctxsize	= sizeof(struct stm32_cryp_ctx),
+		.base.cra_alignmask	= 0,
+		.base.cra_module	= THIS_MODULE,
+
+		.init			= stm32_cryp_init_tfm,
+		.min_keysize		= AES_MIN_KEY_SIZE,
+		.max_keysize		= AES_MAX_KEY_SIZE,
+		.ivsize			= AES_BLOCK_SIZE,
+		.setkey			= stm32_cryp_aes_setkey,
+		.encrypt		= stm32_cryp_aes_ctr_encrypt,
+		.decrypt		= stm32_cryp_aes_ctr_decrypt,
+	},
+	.op = {
+		.do_one_request = stm32_cryp_cipher_one_req,
+	},
+},
+{
+	.base = {
+		.base.cra_name		= "ecb(des)",
+		.base.cra_driver_name	= "stm32-ecb-des",
+		.base.cra_priority	= 200,
+		.base.cra_flags		= CRYPTO_ALG_ASYNC,
+		.base.cra_blocksize	= DES_BLOCK_SIZE,
+		.base.cra_ctxsize	= sizeof(struct stm32_cryp_ctx),
+		.base.cra_alignmask	= 0,
+		.base.cra_module	= THIS_MODULE,
+
+		.init			= stm32_cryp_init_tfm,
+		.min_keysize		= DES_BLOCK_SIZE,
+		.max_keysize		= DES_BLOCK_SIZE,
+		.setkey			= stm32_cryp_des_setkey,
+		.encrypt		= stm32_cryp_des_ecb_encrypt,
+		.decrypt		= stm32_cryp_des_ecb_decrypt,
+	},
+	.op = {
+		.do_one_request = stm32_cryp_cipher_one_req,
+	},
+},
+{
+	.base = {
+		.base.cra_name		= "cbc(des)",
+		.base.cra_driver_name	= "stm32-cbc-des",
+		.base.cra_priority	= 200,
+		.base.cra_flags		= CRYPTO_ALG_ASYNC,
+		.base.cra_blocksize	= DES_BLOCK_SIZE,
+		.base.cra_ctxsize	= sizeof(struct stm32_cryp_ctx),
+		.base.cra_alignmask	= 0,
+		.base.cra_module	= THIS_MODULE,
+
+		.init			= stm32_cryp_init_tfm,
+		.min_keysize		= DES_BLOCK_SIZE,
+		.max_keysize		= DES_BLOCK_SIZE,
+		.ivsize			= DES_BLOCK_SIZE,
+		.setkey			= stm32_cryp_des_setkey,
+		.encrypt		= stm32_cryp_des_cbc_encrypt,
+		.decrypt		= stm32_cryp_des_cbc_decrypt,
+	},
+	.op = {
+		.do_one_request = stm32_cryp_cipher_one_req,
+	},
+},
+{
+	.base = {
+		.base.cra_name		= "ecb(des3_ede)",
+		.base.cra_driver_name	= "stm32-ecb-des3",
+		.base.cra_priority	= 200,
+		.base.cra_flags		= CRYPTO_ALG_ASYNC,
+		.base.cra_blocksize	= DES_BLOCK_SIZE,
+		.base.cra_ctxsize	= sizeof(struct stm32_cryp_ctx),
+		.base.cra_alignmask	= 0,
+		.base.cra_module	= THIS_MODULE,
+
+		.init			= stm32_cryp_init_tfm,
+		.min_keysize		= 3 * DES_BLOCK_SIZE,
+		.max_keysize		= 3 * DES_BLOCK_SIZE,
+		.setkey			= stm32_cryp_tdes_setkey,
+		.encrypt		= stm32_cryp_tdes_ecb_encrypt,
+		.decrypt		= stm32_cryp_tdes_ecb_decrypt,
+	},
+	.op = {
+		.do_one_request = stm32_cryp_cipher_one_req,
+	},
+},
+{
+	.base = {
+		.base.cra_name		= "cbc(des3_ede)",
+		.base.cra_driver_name	= "stm32-cbc-des3",
+		.base.cra_priority	= 200,
+		.base.cra_flags		= CRYPTO_ALG_ASYNC,
+		.base.cra_blocksize	= DES_BLOCK_SIZE,
+		.base.cra_ctxsize	= sizeof(struct stm32_cryp_ctx),
+		.base.cra_alignmask	= 0,
+		.base.cra_module	= THIS_MODULE,
+
+		.init			= stm32_cryp_init_tfm,
+		.min_keysize		= 3 * DES_BLOCK_SIZE,
+		.max_keysize		= 3 * DES_BLOCK_SIZE,
+		.ivsize			= DES_BLOCK_SIZE,
+		.setkey			= stm32_cryp_tdes_setkey,
+		.encrypt		= stm32_cryp_tdes_cbc_encrypt,
+		.decrypt		= stm32_cryp_tdes_cbc_decrypt,
+	},
+	.op = {
+		.do_one_request = stm32_cryp_cipher_one_req,
+	},
+},
+};
+
+static struct aead_engine_alg aead_algs[] = {
+{
+	.base.setkey		= stm32_cryp_aes_aead_setkey,
+	.base.setauthsize	= stm32_cryp_aes_gcm_setauthsize,
+	.base.encrypt		= stm32_cryp_aes_gcm_encrypt,
+	.base.decrypt		= stm32_cryp_aes_gcm_decrypt,
+	.base.init		= stm32_cryp_aes_aead_init,
+	.base.ivsize		= 12,
+	.base.maxauthsize	= AES_BLOCK_SIZE,
+
+	.base.base = {
+		.cra_name		= "gcm(aes)",
+		.cra_driver_name	= "stm32-gcm-aes",
+		.cra_priority		= 200,
+		.cra_flags		= CRYPTO_ALG_ASYNC,
+		.cra_blocksize		= 1,
+		.cra_ctxsize		= sizeof(struct stm32_cryp_ctx),
+		.cra_alignmask		= 0,
+		.cra_module		= THIS_MODULE,
+	},
+	.op = {
+		.do_one_request = stm32_cryp_aead_one_req,
+	},
+},
+{
+	.base.setkey		= stm32_cryp_aes_aead_setkey,
+	.base.setauthsize	= stm32_cryp_aes_ccm_setauthsize,
+	.base.encrypt		= stm32_cryp_aes_ccm_encrypt,
+	.base.decrypt		= stm32_cryp_aes_ccm_decrypt,
+	.base.init		= stm32_cryp_aes_aead_init,
+	.base.ivsize		= AES_BLOCK_SIZE,
+	.base.maxauthsize	= AES_BLOCK_SIZE,
+
+	.base.base = {
+		.cra_name		= "ccm(aes)",
+		.cra_driver_name	= "stm32-ccm-aes",
+		.cra_priority		= 200,
+		.cra_flags		= CRYPTO_ALG_ASYNC,
+		.cra_blocksize		= 1,
+		.cra_ctxsize		= sizeof(struct stm32_cryp_ctx),
+		.cra_alignmask		= 0,
+		.cra_module		= THIS_MODULE,
+	},
+	.op = {
+		.do_one_request = stm32_cryp_aead_one_req,
+	},
+},
+};
+
+static const struct stm32_cryp_caps ux500_data = {
+	.aeads_support = false,
+	.linear_aes_key = true,
+	.kp_mode = false,
+	.iv_protection = true,
+	.swap_final = true,
+	.padding_wa = true,
+	.cr = UX500_CRYP_CR,
+	.sr = UX500_CRYP_SR,
+	.din = UX500_CRYP_DIN,
+	.dout = UX500_CRYP_DOUT,
+	.imsc = UX500_CRYP_IMSC,
+	.mis = UX500_CRYP_MIS,
+	.k1l = UX500_CRYP_K1L,
+	.k1r = UX500_CRYP_K1R,
+	.k3r = UX500_CRYP_K3R,
+	.iv0l = UX500_CRYP_IV0L,
+	.iv0r = UX500_CRYP_IV0R,
+	.iv1l = UX500_CRYP_IV1L,
+	.iv1r = UX500_CRYP_IV1R,
+};
+
+static const struct stm32_cryp_caps f7_data = {
+	.aeads_support = true,
+	.linear_aes_key = false,
+	.kp_mode = true,
+	.iv_protection = false,
+	.swap_final = true,
+	.padding_wa = true,
+	.cr = CRYP_CR,
+	.sr = CRYP_SR,
+	.din = CRYP_DIN,
+	.dout = CRYP_DOUT,
+	.imsc = CRYP_IMSCR,
+	.mis = CRYP_MISR,
+	.k1l = CRYP_K1LR,
+	.k1r = CRYP_K1RR,
+	.k3r = CRYP_K3RR,
+	.iv0l = CRYP_IV0LR,
+	.iv0r = CRYP_IV0RR,
+	.iv1l = CRYP_IV1LR,
+	.iv1r = CRYP_IV1RR,
+};
+
+static const struct stm32_cryp_caps mp1_data = {
+	.aeads_support = true,
+	.linear_aes_key = false,
+	.kp_mode = true,
+	.iv_protection = false,
+	.swap_final = false,
+	.padding_wa = false,
+	.cr = CRYP_CR,
+	.sr = CRYP_SR,
+	.din = CRYP_DIN,
+	.dout = CRYP_DOUT,
+	.imsc = CRYP_IMSCR,
+	.mis = CRYP_MISR,
+	.k1l = CRYP_K1LR,
+	.k1r = CRYP_K1RR,
+	.k3r = CRYP_K3RR,
+	.iv0l = CRYP_IV0LR,
+	.iv0r = CRYP_IV0RR,
+	.iv1l = CRYP_IV1LR,
+	.iv1r = CRYP_IV1RR,
+};
+
+static const struct of_device_id stm32_dt_ids[] = {
+	{ .compatible = "stericsson,ux500-cryp", .data = &ux500_data},
+	{ .compatible = "st,stm32f756-cryp", .data = &f7_data},
+	{ .compatible = "st,stm32mp1-cryp", .data = &mp1_data},
+	{},
+};
+MODULE_DEVICE_TABLE(of, stm32_dt_ids);
+
+static int stm32_cryp_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct stm32_cryp *cryp;
+	struct reset_control *rst;
+	int irq, ret;
+
+	cryp = devm_kzalloc(dev, sizeof(*cryp), GFP_KERNEL);
+	if (!cryp)
+		return -ENOMEM;
+
+	cryp->caps = of_device_get_match_data(dev);
+	if (!cryp->caps)
+		return -ENODEV;
+
+	cryp->dev = dev;
+
+	cryp->regs = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(cryp->regs))
+		return PTR_ERR(cryp->regs);
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	ret = devm_request_threaded_irq(dev, irq, stm32_cryp_irq,
+					stm32_cryp_irq_thread, IRQF_ONESHOT,
+					dev_name(dev), cryp);
+	if (ret) {
+		dev_err(dev, "Cannot grab IRQ\n");
+		return ret;
+	}
+
+	cryp->clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(cryp->clk)) {
+		dev_err_probe(dev, PTR_ERR(cryp->clk), "Could not get clock\n");
+
+		return PTR_ERR(cryp->clk);
+	}
+
+	ret = clk_prepare_enable(cryp->clk);
+	if (ret) {
+		dev_err(cryp->dev, "Failed to enable clock\n");
+		return ret;
+	}
+
+	pm_runtime_set_autosuspend_delay(dev, CRYP_AUTOSUSPEND_DELAY);
+	pm_runtime_use_autosuspend(dev);
+
+	pm_runtime_get_noresume(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+
+	rst = devm_reset_control_get(dev, NULL);
+	if (IS_ERR(rst)) {
+		ret = PTR_ERR(rst);
+		if (ret == -EPROBE_DEFER)
+			goto err_rst;
+	} else {
+		reset_control_assert(rst);
+		udelay(2);
+		reset_control_deassert(rst);
+	}
+
+	platform_set_drvdata(pdev, cryp);
+
+	spin_lock(&cryp_list.lock);
+	list_add(&cryp->list, &cryp_list.dev_list);
+	spin_unlock(&cryp_list.lock);
+
+	/* Initialize crypto engine */
+	cryp->engine = crypto_engine_alloc_init(dev, 1);
+	if (!cryp->engine) {
+		dev_err(dev, "Could not init crypto engine\n");
+		ret = -ENOMEM;
+		goto err_engine1;
+	}
+
+	ret = crypto_engine_start(cryp->engine);
+	if (ret) {
+		dev_err(dev, "Could not start crypto engine\n");
+		goto err_engine2;
+	}
+
+	ret = crypto_engine_register_skciphers(crypto_algs, ARRAY_SIZE(crypto_algs));
+	if (ret) {
+		dev_err(dev, "Could not register algs\n");
+		goto err_algs;
+	}
+
+	if (cryp->caps->aeads_support) {
+		ret = crypto_engine_register_aeads(aead_algs, ARRAY_SIZE(aead_algs));
+		if (ret)
+			goto err_aead_algs;
+	}
+
+	dev_info(dev, "Initialized\n");
+
+	pm_runtime_put_sync(dev);
+
+	return 0;
+
+err_aead_algs:
+	crypto_engine_unregister_skciphers(crypto_algs, ARRAY_SIZE(crypto_algs));
+err_algs:
+err_engine2:
+	crypto_engine_exit(cryp->engine);
+err_engine1:
+	spin_lock(&cryp_list.lock);
+	list_del(&cryp->list);
+	spin_unlock(&cryp_list.lock);
+err_rst:
+	pm_runtime_disable(dev);
+	pm_runtime_put_noidle(dev);
+
+	clk_disable_unprepare(cryp->clk);
+
+	return ret;
+}
+
+static int stm32_cryp_remove(struct platform_device *pdev)
+{
+	struct stm32_cryp *cryp = platform_get_drvdata(pdev);
+	int ret;
+
+	if (!cryp)
+		return -ENODEV;
+
+	ret = pm_runtime_resume_and_get(cryp->dev);
+	if (ret < 0)
+		return ret;
+
+	if (cryp->caps->aeads_support)
+		crypto_engine_unregister_aeads(aead_algs, ARRAY_SIZE(aead_algs));
+	crypto_engine_unregister_skciphers(crypto_algs, ARRAY_SIZE(crypto_algs));
+
+	crypto_engine_exit(cryp->engine);
+
+	spin_lock(&cryp_list.lock);
+	list_del(&cryp->list);
+	spin_unlock(&cryp_list.lock);
+
+	pm_runtime_disable(cryp->dev);
+	pm_runtime_put_noidle(cryp->dev);
+
+	clk_disable_unprepare(cryp->clk);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int stm32_cryp_runtime_suspend(struct device *dev)
+{
+	struct stm32_cryp *cryp = dev_get_drvdata(dev);
+
+	clk_disable_unprepare(cryp->clk);
+
+	return 0;
+}
+
+static int stm32_cryp_runtime_resume(struct device *dev)
+{
+	struct stm32_cryp *cryp = dev_get_drvdata(dev);
+	int ret;
+
+	ret = clk_prepare_enable(cryp->clk);
+	if (ret) {
+		dev_err(cryp->dev, "Failed to prepare_enable clock\n");
+		return ret;
+	}
+
+	return 0;
+}
+#endif
+
+static const struct dev_pm_ops stm32_cryp_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
+	SET_RUNTIME_PM_OPS(stm32_cryp_runtime_suspend,
+			   stm32_cryp_runtime_resume, NULL)
+};
+
+static struct platform_driver stm32_cryp_driver = {
+	.probe  = stm32_cryp_probe,
+	.remove = stm32_cryp_remove,
+	.driver = {
+		.name           = DRIVER_NAME,
+		.pm		= &stm32_cryp_pm_ops,
+		.of_match_table = stm32_dt_ids,
+	},
+};
+
+module_platform_driver(stm32_cryp_driver);
+
+MODULE_AUTHOR("Fabien Dessenne <fabien.dessenne@st.com>");
+MODULE_DESCRIPTION("STMicrolectronics STM32 CRYP hardware driver");
+MODULE_LICENSE("GPL");