STP_EN 102 drivers/i2c/busses/i2c-sprd.c writel(tmp & ~STP_EN, i2c_dev->base + I2C_CTL); STP_EN 104 drivers/i2c/busses/i2c-sprd.c writel(tmp | STP_EN, i2c_dev->base + I2C_CTL);