chsc_sstpc
int chsc_sstpc(void *page, unsigned int op, u16 ctrl, long *clock_delta);
rc = chsc_sstpc(stp_page, STP_OP_CTRL, 0x0000, NULL);
rc = chsc_sstpc(stp_page, STP_OP_SYNC, 0,
chsc_sstpc(stp_page, STP_OP_CTRL, 0x0000, NULL);
rc = chsc_sstpc(stp_page, STP_OP_CTRL, 0xf0e0, NULL);