ec100_write_reg
ret = ec100_write_reg(state, 0x1b, tmp);
ret = ec100_write_reg(state, 0x1c, tmp2);
ret = ec100_write_reg(state, 0x0c, 0xbb); /* if freq */
ret = ec100_write_reg(state, 0x0d, 0x31); /* if freq */
ret = ec100_write_reg(state, 0x08, 0x24);
ret = ec100_write_reg(state, 0x00, 0x00); /* go */
ret = ec100_write_reg(state, 0x00, 0x20); /* go */
ret = ec100_write_reg(state, 0x04, 0x06);
ret = ec100_write_reg(state, 0x67, 0x58);
ret = ec100_write_reg(state, 0x05, 0x18);