On Sat, Jul 23, 2022 at 7:40 PM Angel Iglesias <ang.iglesiasg@xxxxxxxxx> wrote: > > Adds compatibility with the new generation of this sensor, the BMP380 > > Includes basic sensor initialization to do pressure and temp > measurements and allows tuning oversampling settings for each channel. > > The compensation algorithms are adapted from the device datasheet and > the repository https://github.com/BoschSensortec/BMP3-Sensor-API ... > + /* wait for 2ms for command to be proccessed */ processed > + dev_dbg(data->dev, "Command 0x%X proccessed successfully\n", cmd); Ditto. Can you run a spell checker? Kernel has a little one called codespell. > + > + return 0; > +} ... > +static s32 bmp380_compensate_temp(struct bmp280_data *data, u32 adc_temp) > +{ > + s64 var1, var2, var3, var4, var5, var6, comp_temp; > + struct bmp380_calib *calib = &data->calib.bmp380; > + > + var1 = ((s64) adc_temp) - (((s64) calib->T1) << 8); > + var2 = var1 * ((s64) calib->T2); > + var3 = var1 * var1; > + var4 = var3 * ((s64) calib->T3); > + var5 = (var2 << 18) + var4; > + var6 = var5 >> 32; > + data->t_fine = (s32) var6; > + comp_temp = (var6 * 25) >> 14; > + > + comp_temp = clamp_val(comp_temp, BMP380_MIN_TEMP, BMP380_MAX_TEMP); > + return (s32) comp_temp; > +} ... > + s64 var1, var2, var3, var4, var5, var6, offset, sensitivity; > + u64 comp_press; > + struct bmp380_calib *calib = &data->calib.bmp380; > + > + var1 = ((s64)data->t_fine) * ((s64)data->t_fine); > + var2 = var1 >> 6; > + var3 = (var2 * ((s64) data->t_fine)) >> 8; > + var4 = (((s64)calib->P8) * var3) >> 5; > + var5 = (((s64) calib->P7) * var1) << 4; > + var6 = (((s64) calib->P6) * ((s64)data->t_fine)) << 22; > + offset = (((s64)calib->P5) << 47) + var4 + var5 + var6; > + var2 = (((s64)calib->P4) * var3) >> 5; > + var4 = (((s64) calib->P3) * var1) << 2; > + var5 = (((s64) calib->P2) - ((s64) 1<<14)) * > + (((s64)data->t_fine) << 21); > + sensitivity = ((((s64) calib->P1) - ((s64) 1 << 14)) << 46) + > + var2 + var4 + var5; > + var1 = (sensitivity >> 24) * ((s64)adc_press); > + var2 = ((s64)calib->P10) * ((s64) data->t_fine); > + var3 = var2 + (((s64) calib->P9) << 16); > + var4 = (var3 * ((s64)adc_press)) >> 13; > + > + /* > + * Dividing by 10 followed by multiplying by 10 to avoid > + * possible overflow caused by (uncomp_data->pressure * partial_data4) > + */ > + var5 = (((s64)adc_press) * (var4 / 10)) >> 9; > + var5 *= 10; > + var6 = ((s64)adc_press) * ((s64)adc_press); > + var2 = (((s64)calib->P11) * var6) >> 16; > + var3 = (var2 * ((s64)adc_press)) >> 7; > + var4 = (offset >> 2) + var1 + var5 + var3; > + comp_press = ((u64)var4 * 25) >> 40; Kbuild bot is right, you forgot to (compile-)test for a 32-bit machine. ... > + ret = regmap_bulk_read(data->regmap, BMP380_REG_TEMP_XLSB, data->buf, 3); sizeof() ? ... > + /* Read and compensate temperature so we get a reading of t_fine. */ for temperature ... > + ret = regmap_bulk_read(data->regmap, BMP380_REG_PRESS_XLSB, data->buf, 3); sizeof() ? ... > + .oversampling_temp_default = ilog2(1), > + .oversampling_press_default = ilog2(4), BIT() ... > +#define BMP380_REG_CMD 0x7E > +#define BMP380_REG_CONFIG 0x1F > +#define BMP380_REG_ODR 0X1D > +#define BMP380_REG_OSR 0X1C > +#define BMP380_REG_POWER_CONTROL 0X1B > +#define BMP380_REG_IF_CONFIG 0X1A > +#define BMP380_REG_INT_CONTROL 0X19 > +#define BMP380_REG_INT_STATUS 0X11 > +#define BMP380_REG_EVENT 0X10 > +#define BMP380_REG_STATUS 0X03 > +#define BMP380_REG_ERROR 0X02 > +#define BMP380_REG_ID 0X00 > + > +#define BMP380_REG_FIFO_CONFIG_1 0X18 > +#define BMP380_REG_FIFO_CONFIG_2 0X17 > +#define BMP380_REG_FIFO_WATERMARK_MSB 0X16 > +#define BMP380_REG_FIFO_WATERMARK_LSB 0X15 > +#define BMP380_REG_FIFO_DATA 0X14 > +#define BMP380_REG_FIFO_LENGTH_MSB 0X13 > +#define BMP380_REG_FIFO_LENGTH_LSB 0X12 > + > +#define BMP380_REG_SENSOR_TIME_MSB 0X0E > +#define BMP380_REG_SENSOR_TIME_LSB 0X0D > +#define BMP380_REG_SENSOR_TIME_XLSB 0X0C > + > +#define BMP380_REG_TEMP_MSB 0X09 > +#define BMP380_REG_TEMP_LSB 0X08 > +#define BMP380_REG_TEMP_XLSB 0X07 > + > +#define BMP380_REG_PRESS_MSB 0X06 > +#define BMP380_REG_PRESS_LSB 0X05 > +#define BMP380_REG_PRESS_XLSB 0X04 > + > +#define BMP380_REG_CALIB_TEMP_START 0x31 Be consistent x vs X (we prefer x). -- With Best Regards, Andy Shevchenko
