diff options
Diffstat (limited to 'src/drivers/i2c/tpm/tis_atmel.c')
| -rw-r--r-- | src/drivers/i2c/tpm/tis_atmel.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/drivers/i2c/tpm/tis_atmel.c b/src/drivers/i2c/tpm/tis_atmel.c index 0a29049d95..a0bbf33fc4 100644 --- a/src/drivers/i2c/tpm/tis_atmel.c +++ b/src/drivers/i2c/tpm/tis_atmel.c @@ -107,7 +107,19 @@ static tpm_result_t i2c_tis_sendrecv(const uint8_t *sendbuf, size_t sbuf_size, return TPM_SUCCESS; } -tis_sendrecv_fn tis_probe(void) +tis_sendrecv_fn tis_probe(enum tpm_family *family) { + /* + * Can't query version or really anything as the device doesn't support + * much through this interface (can't specify address on accesses). + * + * Hence the assumption is that whatever TPM version is enabled at + * compile-time defines what the device supports. The check is written + * in a way to give TPM 1 preference even if support for both versions + * is compiled in. + */ + if (family != NULL) + *family = CONFIG(TPM1) ? TPM_1 : TPM_2; + return &i2c_tis_sendrecv; } |