read_i2c
int (*read_i2c)(PMF_STD_ARGS, u32 len);
.read_i2c = pmac_i2c_do_read,
PMF_PARSE_CALL(read_i2c, cmd, h, bytes);
ddc_funcs->read_i2c = lp_read_i2c;
success = hdcp->config.ddc.funcs.read_i2c(
bool (*read_i2c)(void *handle,
status = read_i2c(priv, flags);