--- zzzz-none-000/linux-3.10.107/include/linux/tpm.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/linux/tpm.h	2021-02-04 17:41:59.000000000 +0000
@@ -22,18 +22,48 @@
 #ifndef __LINUX_TPM_H__
 #define __LINUX_TPM_H__
 
+#define TPM_DIGEST_SIZE 20	/* Max TPM v1.2 PCR size */
+
 /*
  * Chip num is this value or a valid tpm idx
  */
 #define	TPM_ANY_NUM 0xFFFF
 
+struct tpm_chip;
+struct trusted_key_payload;
+struct trusted_key_options;
+
+struct tpm_class_ops {
+	const u8 req_complete_mask;
+	const u8 req_complete_val;
+	bool (*req_canceled)(struct tpm_chip *chip, u8 status);
+	int (*recv) (struct tpm_chip *chip, u8 *buf, size_t len);
+	int (*send) (struct tpm_chip *chip, u8 *buf, size_t len);
+	void (*cancel) (struct tpm_chip *chip);
+	u8 (*status) (struct tpm_chip *chip);
+	bool (*update_timeouts)(struct tpm_chip *chip,
+				unsigned long *timeout_cap);
+
+};
+
 #if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE)
 
+extern int tpm_is_tpm2(u32 chip_num);
 extern int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf);
 extern int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash);
 extern int tpm_send(u32 chip_num, void *cmd, size_t buflen);
 extern int tpm_get_random(u32 chip_num, u8 *data, size_t max);
+extern int tpm_seal_trusted(u32 chip_num,
+			    struct trusted_key_payload *payload,
+			    struct trusted_key_options *options);
+extern int tpm_unseal_trusted(u32 chip_num,
+			      struct trusted_key_payload *payload,
+			      struct trusted_key_options *options);
 #else
+static inline int tpm_is_tpm2(u32 chip_num)
+{
+	return -ENODEV;
+}
 static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) {
 	return -ENODEV;
 }
@@ -46,5 +76,18 @@
 static inline int tpm_get_random(u32 chip_num, u8 *data, size_t max) {
 	return -ENODEV;
 }
+
+static inline int tpm_seal_trusted(u32 chip_num,
+				   struct trusted_key_payload *payload,
+				   struct trusted_key_options *options)
+{
+	return -ENODEV;
+}
+static inline int tpm_unseal_trusted(u32 chip_num,
+				     struct trusted_key_payload *payload,
+				     struct trusted_key_options *options)
+{
+	return -ENODEV;
+}
 #endif
 #endif