AD7877_REG_CTRL1
#define AD7877_READ_CHAN(x) (AD7877_WRITEADD(AD7877_REG_CTRL1) | AD7877_SER | \
req->command = (u16) (AD7877_WRITEADD(AD7877_REG_CTRL1) |
req->reset = AD7877_WRITEADD(AD7877_REG_CTRL1) | AD7877_MODE_NOC;
ts->cmd_crtl1 = AD7877_WRITEADD(AD7877_REG_CTRL1) |
ad7877_write(spi, AD7877_REG_CTRL1, ts->cmd_crtl1);