diff options
Diffstat (limited to 'drivers/tpm/tpm_tis_i2c.c')
-rw-r--r-- | drivers/tpm/tpm_tis_i2c.c | 74 |
1 files changed, 2 insertions, 72 deletions
diff --git a/drivers/tpm/tpm_tis_i2c.c b/drivers/tpm/tpm_tis_i2c.c index cc740e9c21b..b6eaef18f57 100644 --- a/drivers/tpm/tpm_tis_i2c.c +++ b/drivers/tpm/tpm_tis_i2c.c @@ -50,9 +50,6 @@ DECLARE_GLOBAL_DATA_PTR; -/* Address of the TPM on the I2C bus */ -#define TPM_I2C_ADDR 0x20 - /* Max buffer size supported by our tpm */ #define TPM_DEV_BUFSIZE 1260 @@ -73,13 +70,6 @@ DECLARE_GLOBAL_DATA_PTR; #define TPM_HEADER_SIZE 10 -/* - * Expected value for DIDVID register - * - * The only device the system knows about at this moment is Infineon slb9635. - */ -#define TPM_TIS_I2C_DID_VID 0x000b15d1L - enum tis_access { TPM_ACCESS_VALID = 0x80, TPM_ACCESS_ACTIVE_LOCALITY = 0x20, @@ -123,21 +113,11 @@ static const char * const chip_name[] = { /* Structure to store I2C TPM specific stuff */ struct tpm_dev { -#ifdef CONFIG_DM_I2C struct udevice *dev; -#else - uint addr; -#endif u8 buf[TPM_DEV_BUFSIZE + sizeof(u8)]; /* Max buffer size + addr */ enum i2c_chip_type chip_type; }; -static struct tpm_dev tpm_dev = { -#ifndef CONFIG_DM_I2C - .addr = TPM_I2C_ADDR -#endif -}; - static struct tpm_dev tpm_dev; /* @@ -163,12 +143,7 @@ static int iic_tpm_read(u8 addr, u8 *buffer, size_t len) if ((tpm_dev.chip_type == SLB9635) || (tpm_dev.chip_type == UNKNOWN)) { /* slb9635 protocol should work in both cases */ for (count = 0; count < MAX_COUNT; count++) { -#ifdef CONFIG_DM_I2C rc = dm_i2c_write(tpm_dev.dev, 0, (uchar *)&addrbuf, 1); -#else - rc = i2c_write(tpm_dev.addr, 0, 0, - (uchar *)&addrbuf, 1); -#endif if (rc == 0) break; /* Success, break to skip sleep */ udelay(SLEEP_DURATION); @@ -182,11 +157,7 @@ static int iic_tpm_read(u8 addr, u8 *buffer, size_t len) */ for (count = 0; count < MAX_COUNT; count++) { udelay(SLEEP_DURATION); -#ifdef CONFIG_DM_I2C rc = dm_i2c_read(tpm_dev.dev, 0, buffer, len); -#else - rc = i2c_read(tpm_dev.addr, 0, 0, buffer, len); -#endif if (rc == 0) break; /* success, break to skip sleep */ } @@ -199,11 +170,7 @@ static int iic_tpm_read(u8 addr, u8 *buffer, size_t len) * be safe on the safe side. */ for (count = 0; count < MAX_COUNT; count++) { -#ifdef CONFIG_DM_I2C rc = dm_i2c_read(tpm_dev.dev, addr, buffer, len); -#else - rc = i2c_read(tpm_dev.addr, addr, 1, buffer, len); -#endif if (rc == 0) break; /* break here to skip sleep */ udelay(SLEEP_DURATION); @@ -224,20 +191,8 @@ static int iic_tpm_write_generic(u8 addr, u8 *buffer, size_t len, int rc = 0; int count; - /* Prepare send buffer */ -#ifndef CONFIG_DM_I2C - tpm_dev.buf[0] = addr; - memcpy(&(tpm_dev.buf[1]), buffer, len); - buffer = tpm_dev.buf; - len++; -#endif - for (count = 0; count < max_count; count++) { -#ifdef CONFIG_DM_I2C rc = dm_i2c_write(tpm_dev.dev, addr, buffer, len); -#else - rc = i2c_write(tpm_dev.addr, 0, 0, buffer, len); -#endif if (rc == 0) break; /* Success, break to skip sleep */ udelay(sleep_time); @@ -597,12 +552,13 @@ static enum i2c_chip_type tpm_vendor_chip_type(void) return UNKNOWN; } -static int tpm_vendor_init_common(void) +int tpm_vendor_init(struct udevice *dev) { struct tpm_chip *chip; u32 vendor; u32 expected_did_vid; + tpm_dev.dev = dev; tpm_dev.chip_type = tpm_vendor_chip_type(); chip = tpm_register_hardware(&tpm_tis_i2c); @@ -651,32 +607,6 @@ static int tpm_vendor_init_common(void) return 0; } -#ifdef CONFIG_DM_I2C -/* Initialisation of i2c tpm */ -int tpm_vendor_init_dev(struct udevice *dev) -{ - tpm_dev.dev = dev; - return tpm_vendor_init_common(); -} -#else -/* Initialisation of i2c tpm */ -int tpm_vendor_init(uint32_t dev_addr) -{ - uint old_addr; - int rc = 0; - - old_addr = tpm_dev.addr; - if (dev_addr != 0) - tpm_dev.addr = dev_addr; - - rc = tpm_vendor_init_common(); - if (rc) - tpm_dev.addr = old_addr; - - return rc; -} -#endif - void tpm_vendor_cleanup(struct tpm_chip *chip) { release_locality(chip, chip->vendor.locality, 1); |