REG_CON
val = i2c_readl(i2c, REG_CON) & REG_CON_TUNING_MASK;
i2c_writel(i2c, val, REG_CON);
u32 val = i2c_readl(i2c, REG_CON) & REG_CON_TUNING_MASK;
i2c_writel(i2c, val, REG_CON);
ctrl = i2c_readl(i2c, REG_CON);
i2c_writel(i2c, ctrl, REG_CON);
ctrl = i2c_readl(i2c, REG_CON) & REG_CON_TUNING_MASK;
i2c_writel(i2c, ctrl, REG_CON);
con = i2c_readl(i2c, REG_CON);
i2c_writel(i2c, con, REG_CON);
i2c_writel(i2c, i2c_readl(i2c, REG_CON) & ~REG_CON_START, REG_CON);
con = i2c_readl(i2c, REG_CON);
i2c_writel(i2c, con, REG_CON);
val = i2c_readl(i2c, REG_CON);
i2c_writel(i2c, val, REG_CON);