1 files changed, 120 insertions, 0 deletions
diff --git a/drivers/tpm/tpm_tis_i2c.h b/drivers/tpm/tpm_tis_i2c.h
new file mode 100644
index 0000000..75fa829
--- /dev/null
+++ b/drivers/tpm/tpm_tis_i2c.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2011 Infineon Technologies
+ *
+ * Authors:
+ * Peter Huewe <huewe.external@infineon.com>
+ *
+ * Version: 2.1.1
+ *
+ * Description:
+ * Device driver for TCG/TCPA TPM (trusted platform module).
+ * Specifications at www.trustedcomputinggroup.org
+ *
+ * It is based on the Linux kernel driver tpm.c from Leendert van
+ * Dorn, Dave Safford, Reiner Sailer, and Kyleen Hall.
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#ifndef _TPM_TIS_I2C_H
+#define _TPM_TIS_I2C_H
+
+#include <linux/compiler.h>
+#include <linux/types.h>
+
+enum tpm_timeout {
+	TPM_TIMEOUT = 5,	/* msecs */
+};
+
+/* Size of external transmit buffer (used in tpm_transmit)*/
+#define TPM_BUFSIZE 4096
+
+/* Index of Count field in TPM response buffer */
+#define TPM_RSP_SIZE_BYTE	2
+#define TPM_RSP_RC_BYTE		6
+
+struct tpm_chip;
+
+struct tpm_vendor_specific {
+	const u8 req_complete_mask;
+	const u8 req_complete_val;
+	const u8 req_canceled;
+	int irq;
+	int (*recv) (struct tpm_chip *, u8 *, size_t);
+	int (*send) (struct tpm_chip *, u8 *, size_t);
+	void (*cancel) (struct tpm_chip *);
+	u8(*status) (struct tpm_chip *);
+	int locality;
+	unsigned long timeout_a, timeout_b, timeout_c, timeout_d;  /* msec */
+	unsigned long duration[3];  /* msec */
+};
+
+struct tpm_chip {
+	int is_open;
+	struct tpm_vendor_specific vendor;
+};
+
+struct tpm_input_header {
+	__be16 tag;
+	__be32 length;
+	__be32 ordinal;
+} __packed;
+
+struct tpm_output_header {
+	__be16 tag;
+	__be32 length;
+	__be32 return_code;
+} __packed;
+
+struct timeout_t {
+	__be32 a;
+	__be32 b;
+	__be32 c;
+	__be32 d;
+} __packed;
+
+struct duration_t {
+	__be32 tpm_short;
+	__be32 tpm_medium;
+	__be32 tpm_long;
+} __packed;
+
+union cap_t {
+	struct timeout_t timeout;
+	struct duration_t duration;
+};
+
+struct tpm_getcap_params_in {
+	__be32 cap;
+	__be32 subcap_size;
+	__be32 subcap;
+} __packed;
+
+struct tpm_getcap_params_out {
+	__be32 cap_size;
+	union cap_t cap;
+} __packed;
+
+union tpm_cmd_header {
+	struct tpm_input_header in;
+	struct tpm_output_header out;
+};
+
+union tpm_cmd_params {
+	struct tpm_getcap_params_out getcap_out;
+	struct tpm_getcap_params_in getcap_in;
+};
+
+struct tpm_cmd_t {
+	union tpm_cmd_header header;
+	union tpm_cmd_params params;
+} __packed;
+
+struct tpm_chip *tpm_register_hardware(const struct tpm_vendor_specific *);
+
+struct udevice;
+int tpm_vendor_init(struct udevice *dev);
+
+void tpm_vendor_cleanup(struct tpm_chip *chip);
+
+#endif