diff options
Diffstat (limited to 'common/usb_pd_tcpm.c')
| -rw-r--r-- | common/usb_pd_tcpm.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/common/usb_pd_tcpm.c b/common/usb_pd_tcpm.c index d24931e692..d7458fabfe 100644 --- a/common/usb_pd_tcpm.c +++ b/common/usb_pd_tcpm.c @@ -6,6 +6,7 @@ /* Type-C port manager */ #include "i2c.h" +#include "timer.h" #include "usb_pd.h" #include "usb_pd_tcpc.h" #include "usb_pd_tcpm.h" @@ -19,6 +20,23 @@ static int tcpc_polarity, tcpc_vconn; +int tcpm_init(int port) +{ + int rv, vid = 0; + + while (1) { + rv = i2c_read16(I2C_PORT_TCPC, I2C_ADDR_TCPC(port), + TCPC_REG_VENDOR_ID, &vid); + /* + * If i2c succeeds and VID is non-zero, then initialization + * is complete + */ + if (rv == EC_SUCCESS && vid) + return rv; + msleep(10); + } +} + int tcpm_get_cc(int port, int *cc1, int *cc2) { int status; |