diff options
Diffstat (limited to 'drivers/char')
-rw-r--r-- | drivers/char/tpm/st33zp24/i2c.c | 2 | ||||
-rw-r--r-- | drivers/char/tpm/st33zp24/spi.c | 2 | ||||
-rw-r--r-- | drivers/char/tpm/st33zp24/st33zp24.h | 4 | ||||
-rw-r--r-- | drivers/char/tpm/tpm_i2c_infineon.c | 15 | ||||
-rw-r--r-- | drivers/char/tpm/tpm_i2c_nuvoton.c | 16 |
5 files changed, 19 insertions, 20 deletions
diff --git a/drivers/char/tpm/st33zp24/i2c.c b/drivers/char/tpm/st33zp24/i2c.c index be5d1abd3e8e..8390c5b54c3b 100644 --- a/drivers/char/tpm/st33zp24/i2c.c +++ b/drivers/char/tpm/st33zp24/i2c.c @@ -33,7 +33,7 @@ struct st33zp24_i2c_phy { struct i2c_client *client; - u8 buf[TPM_BUFSIZE + 1]; + u8 buf[ST33ZP24_BUFSIZE + 1]; int io_lpcpd; }; diff --git a/drivers/char/tpm/st33zp24/spi.c b/drivers/char/tpm/st33zp24/spi.c index d7909ab287a8..ff019a1e3c68 100644 --- a/drivers/char/tpm/st33zp24/spi.c +++ b/drivers/char/tpm/st33zp24/spi.c @@ -63,7 +63,7 @@ * some latency byte before the answer is available (max 15). * We have 2048 + 1024 + 15. */ -#define ST33ZP24_SPI_BUFFER_SIZE (TPM_BUFSIZE + (TPM_BUFSIZE / 2) +\ +#define ST33ZP24_SPI_BUFFER_SIZE (ST33ZP24_BUFSIZE + (ST33ZP24_BUFSIZE / 2) +\ MAX_SPI_LATENCY) diff --git a/drivers/char/tpm/st33zp24/st33zp24.h b/drivers/char/tpm/st33zp24/st33zp24.h index 6f4a4198af6a..20da0a84988d 100644 --- a/drivers/char/tpm/st33zp24/st33zp24.h +++ b/drivers/char/tpm/st33zp24/st33zp24.h @@ -18,8 +18,8 @@ #ifndef __LOCAL_ST33ZP24_H__ #define __LOCAL_ST33ZP24_H__ -#define TPM_WRITE_DIRECTION 0x80 -#define TPM_BUFSIZE 2048 +#define TPM_WRITE_DIRECTION 0x80 +#define ST33ZP24_BUFSIZE 2048 struct st33zp24_dev { struct tpm_chip *chip; diff --git a/drivers/char/tpm/tpm_i2c_infineon.c b/drivers/char/tpm/tpm_i2c_infineon.c index 9086edc9066b..3b490d9d90e7 100644 --- a/drivers/char/tpm/tpm_i2c_infineon.c +++ b/drivers/char/tpm/tpm_i2c_infineon.c @@ -26,8 +26,7 @@ #include <linux/wait.h> #include "tpm.h" -/* max. buffer size supported by our TPM */ -#define TPM_BUFSIZE 1260 +#define TPM_I2C_INFINEON_BUFSIZE 1260 /* max. number of iterations after I2C NAK */ #define MAX_COUNT 3 @@ -63,11 +62,13 @@ enum i2c_chip_type { UNKNOWN, }; -/* Structure to store I2C TPM specific stuff */ struct tpm_inf_dev { struct i2c_client *client; int locality; - u8 buf[TPM_BUFSIZE + sizeof(u8)]; /* max. buffer size + addr */ + /* In addition to the data itself, the buffer must fit the 7-bit I2C + * address and the direction bit. + */ + u8 buf[TPM_I2C_INFINEON_BUFSIZE + 1]; struct tpm_chip *chip; enum i2c_chip_type chip_type; unsigned int adapterlimit; @@ -219,7 +220,7 @@ static int iic_tpm_write_generic(u8 addr, u8 *buffer, size_t len, .buf = tpm_dev.buf }; - if (len > TPM_BUFSIZE) + if (len > TPM_I2C_INFINEON_BUFSIZE) return -EINVAL; if (!tpm_dev.client->adapter->algo->master_xfer) @@ -527,8 +528,8 @@ static int tpm_tis_i2c_send(struct tpm_chip *chip, u8 *buf, size_t len) u8 retries = 0; u8 sts = TPM_STS_GO; - if (len > TPM_BUFSIZE) - return -E2BIG; /* command is too long for our tpm, sorry */ + if (len > TPM_I2C_INFINEON_BUFSIZE) + return -E2BIG; if (request_locality(chip, 0) < 0) return -EBUSY; diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c index 217f7f1cbde8..5700cc2ddee1 100644 --- a/drivers/char/tpm/tpm_i2c_nuvoton.c +++ b/drivers/char/tpm/tpm_i2c_nuvoton.c @@ -35,14 +35,12 @@ #include "tpm.h" /* I2C interface offsets */ -#define TPM_STS 0x00 -#define TPM_BURST_COUNT 0x01 -#define TPM_DATA_FIFO_W 0x20 -#define TPM_DATA_FIFO_R 0x40 -#define TPM_VID_DID_RID 0x60 -/* TPM command header size */ -#define TPM_HEADER_SIZE 10 -#define TPM_RETRY 5 +#define TPM_STS 0x00 +#define TPM_BURST_COUNT 0x01 +#define TPM_DATA_FIFO_W 0x20 +#define TPM_DATA_FIFO_R 0x40 +#define TPM_VID_DID_RID 0x60 +#define TPM_I2C_RETRIES 5 /* * I2C bus device maximum buffer size w/o counting I2C address or command * i.e. max size required for I2C write is 34 = addr, command, 32 bytes data @@ -292,7 +290,7 @@ static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count) dev_err(dev, "%s() count < header size\n", __func__); return -EIO; } - for (retries = 0; retries < TPM_RETRY; retries++) { + for (retries = 0; retries < TPM_I2C_RETRIES; retries++) { if (retries > 0) { /* if this is not the first trial, set responseRetry */ i2c_nuvoton_write_status(client, |