I2C_TPI
[I2C_TPI] = "TPI",
sii9234_writeb(sii9234, I2C_TPI, offset, value)
sii9234_writebm(sii9234, I2C_TPI, offset, value, mask)
sii9234_readb(sii9234, I2C_TPI, offset)
ctx->client[I2C_TPI] = devm_i2c_new_dummy_device(&client->dev, adapter,
if (IS_ERR(ctx->client[I2C_TPI])) {
return PTR_ERR(ctx->client[I2C_TPI]);