HI3660_TEMP_STEP
return HI3660_TEMP_BASE + step * HI3660_TEMP_STEP;
return DIV_ROUND_UP(temp - HI3660_TEMP_BASE, HI3660_TEMP_STEP);
writel(DIV_ROUND_UP(value, HI3660_TEMP_STEP) & 0x7F,