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path: root/drivers/tpm/tpm_tis_infineon.c
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Diffstat (limited to 'drivers/tpm/tpm_tis_infineon.c')
-rw-r--r--drivers/tpm/tpm_tis_infineon.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/tpm/tpm_tis_infineon.c b/drivers/tpm/tpm_tis_infineon.c
index f57c32837b..a4b6741676 100644
--- a/drivers/tpm/tpm_tis_infineon.c
+++ b/drivers/tpm/tpm_tis_infineon.c
@@ -30,17 +30,32 @@
#include <linux/types.h>
#include <linux/unaligned/be_byteshift.h>
-#include "tpm_tis_infineon.h"
+#include "tpm_tis.h"
#include "tpm_internal.h"
DECLARE_GLOBAL_DATA_PTR;
+enum i2c_chip_type {
+ SLB9635,
+ SLB9645,
+ UNKNOWN,
+};
+
+/* expected value for DIDVID register */
+#define TPM_TIS_I2C_DID_VID_9635 0x000b15d1L
+#define TPM_TIS_I2C_DID_VID_9645 0x001a15d1L
+
static const char * const chip_name[] = {
[SLB9635] = "slb9635tt",
[SLB9645] = "slb9645tt",
[UNKNOWN] = "unknown/fallback to slb9635",
};
+#define TPM_ACCESS(l) (0x0000 | ((l) << 4))
+#define TPM_STS(l) (0x0001 | ((l) << 4))
+#define TPM_DATA_FIFO(l) (0x0005 | ((l) << 4))
+#define TPM_DID_VID(l) (0x0006 | ((l) << 4))
+
/*
* tpm_tis_i2c_read() - read from TPM register
* @addr: register address to read from