diff options
| author | Che-Liang Chiou <clchiou@chromium.org> | 2011-04-14 11:43:25 +0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2011-08-24 10:01:08 -0700 |
| commit | 85d4b16be18ee79b46fd0a90b1d6651ef034a863 (patch) | |
| tree | de82d0b397d523261822644a5d2cc96dbb7a741a /drivers | |
| parent | 1ff7c821e5098eeef61e9c51cbad7dec5b6f633c (diff) | |
Set i2c bus for TPM and wake up TPM chip
With this patch you will be able to see TPM driver successfully
probes TPM chip on i2c bus. The TPM driver will output the following
message: "I2C addr(x20) : v05 engineering/production".
R=rongchang@chromium.org
BUG=none
TEST=verify that above message shows up
Review URL: http://codereview.chromium.org/6839014
Change-Id: Id0c4c9d24183f436c225c8ed10ed3ef464cfd501
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tpm/slb9635_i2c/ifx_v05.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/tpm/slb9635_i2c/ifx_v05.c b/drivers/tpm/slb9635_i2c/ifx_v05.c index c39d8e765b3..6050425f9b0 100644 --- a/drivers/tpm/slb9635_i2c/ifx_v05.c +++ b/drivers/tpm/slb9635_i2c/ifx_v05.c @@ -18,7 +18,28 @@ int tpm_init_v05(void) { - return i2c_probe(TPM_V05_ADDR ); + int rc; + +#ifdef CONFIG_INFINEON_TPM_I2C_BUS + if ((rc = i2c_set_bus_num(CONFIG_INFINEON_TPM_I2C_BUS))) { + debug("%s: fail: i2c_set_bus_num(0x%x) return %d\n", __func__, + CONFIG_INFINEON_TPM_I2C_BUS, rc); + return rc; + } +#else +#warning "No i2c bus number is configured." +#endif + /* request for waking up device */ + if ((rc = i2c_probe(TPM_V05_ADDR)) == 0) + return 0; + + /* do the probing job */ + if ((rc = i2c_probe(TPM_V05_ADDR)) == 0) + return 0; + + debug("%s: fail: i2c_probe(0x%x) return %d\n", __func__, + TPM_V05_ADDR, rc); + return rc; } int tpm_open_v05(void) |