diff options
Diffstat (limited to 'src/drivers/i2c/tpm/tis.c')
| -rw-r--r-- | src/drivers/i2c/tpm/tis.c | 41 |
1 files changed, 28 insertions, 13 deletions
diff --git a/src/drivers/i2c/tpm/tis.c b/src/drivers/i2c/tpm/tis.c index 2cf32f6217..e9bf2cf706 100644 --- a/src/drivers/i2c/tpm/tis.c +++ b/src/drivers/i2c/tpm/tis.c @@ -19,6 +19,32 @@ static struct tpm_chip chip; #define TPM_CMD_COUNT_BYTE 2 #define TPM_CMD_ORDINAL_BYTE 6 +int tis_open(void) +{ + int rc; + + if (chip.is_open) { + printk(BIOS_DEBUG, "%s() called twice.\n", __func__); + return -1; + } + + rc = tpm_vendor_init(&chip, CONFIG_DRIVER_TPM_I2C_BUS, + CONFIG_DRIVER_TPM_I2C_ADDR); + if (rc < 0) + chip.is_open = 0; + + if (rc) + return -1; + + return 0; +} + +int tis_init(void) +{ + return tpm_vendor_probe(CONFIG_DRIVER_TPM_I2C_BUS, + CONFIG_DRIVER_TPM_I2C_ADDR); +} + static ssize_t tpm_transmit(const uint8_t *sbuf, size_t sbufsiz, void *rbuf, size_t rbufsiz) { @@ -81,8 +107,8 @@ out: return rc; } -static int i2c_tpm_sendrecv(const uint8_t *sendbuf, size_t sbuf_size, - uint8_t *recvbuf, size_t *rbuf_len) +int tis_sendrecv(const uint8_t *sendbuf, size_t sbuf_size, + uint8_t *recvbuf, size_t *rbuf_len) { ASSERT(sbuf_size >= 10); @@ -118,14 +144,3 @@ static int i2c_tpm_sendrecv(const uint8_t *sendbuf, size_t sbuf_size, return 0; } - -tis_sendrecv_fn tis_probe(void) -{ - if (tpm_vendor_probe(CONFIG_DRIVER_TPM_I2C_BUS, CONFIG_DRIVER_TPM_I2C_ADDR)) - return NULL; - - if (tpm_vendor_init(&chip, CONFIG_DRIVER_TPM_I2C_BUS, CONFIG_DRIVER_TPM_I2C_ADDR)) - return NULL; - - return &i2c_tpm_sendrecv; -} |