tegra_i2c_writel
tegra_i2c_writel(0, nvec->base + I2C_SL_RCVD);
tegra_i2c_writel(to_send, nvec->base + I2C_SL_RCVD);
tegra_i2c_writel(val, nvec->base + I2C_CNFG);
tegra_i2c_writel(I2C_SL_NEWSL, nvec->base + I2C_SL_CNFG);
tegra_i2c_writel(0x1E, nvec->base + I2C_SL_DELAY_COUNT);
tegra_i2c_writel(nvec->i2c_addr >> 1, nvec->base + I2C_SL_ADDR1);
tegra_i2c_writel(0, nvec->base + I2C_SL_ADDR2);
tegra_i2c_writel(I2C_SL_NEWSL | I2C_SL_NACK, nvec->base + I2C_SL_CNFG);