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iio: pressure: bmp280: Use chip_info pointers for each chip as driver data
Refactor driver I2C and SPI implementations using pointers for each variant's chip_info as the driver data. Adds the regmap configuration to the chip_info struct. Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Suggested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Angel Iglesias <ang.iglesiasg@gmail.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/a48cfa756be48d61dbf656c65daff6e9a1290e6f.1676823250.git.ang.iglesiasg@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Angel Iglesias
Jonathan Cameron
parent
4ab8bef1ea
commit
0b0b772637
@ -49,65 +49,6 @@
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*/
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enum { AC1, AC2, AC3, AC4, AC5, AC6, B1, B2, MB, MC, MD };
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struct bmp180_calib {
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s16 AC1;
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s16 AC2;
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s16 AC3;
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u16 AC4;
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u16 AC5;
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u16 AC6;
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s16 B1;
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s16 B2;
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s16 MB;
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s16 MC;
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s16 MD;
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};
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/* See datasheet Section 4.2.2. */
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struct bmp280_calib {
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u16 T1;
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s16 T2;
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s16 T3;
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u16 P1;
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s16 P2;
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s16 P3;
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s16 P4;
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s16 P5;
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s16 P6;
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s16 P7;
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s16 P8;
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s16 P9;
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u8 H1;
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s16 H2;
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u8 H3;
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s16 H4;
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s16 H5;
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s8 H6;
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};
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/* See datasheet Section 3.11.1. */
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struct bmp380_calib {
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u16 T1;
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u16 T2;
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s8 T3;
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s16 P1;
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s16 P2;
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s8 P3;
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s8 P4;
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u16 P5;
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u16 P6;
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s8 P7;
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s8 P8;
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s16 P9;
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s8 P10;
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s8 P11;
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};
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static const char *const bmp280_supply_names[] = {
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"vddd", "vdda"
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};
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#define BMP280_NUM_SUPPLIES ARRAY_SIZE(bmp280_supply_names)
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enum bmp380_odr {
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BMP380_ODR_200HZ,
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@ -130,94 +71,6 @@ enum bmp380_odr {
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BMP380_ODR_0_0015HZ,
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};
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struct bmp280_data {
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struct device *dev;
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struct mutex lock;
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struct regmap *regmap;
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struct completion done;
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bool use_eoc;
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const struct bmp280_chip_info *chip_info;
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union {
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struct bmp180_calib bmp180;
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struct bmp280_calib bmp280;
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struct bmp380_calib bmp380;
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} calib;
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struct regulator_bulk_data supplies[BMP280_NUM_SUPPLIES];
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unsigned int start_up_time; /* in microseconds */
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/* log of base 2 of oversampling rate */
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u8 oversampling_press;
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u8 oversampling_temp;
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u8 oversampling_humid;
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u8 iir_filter_coeff;
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/*
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* BMP380 devices introduce sampling frequency configuration. See
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* datasheet sections 3.3.3. and 4.3.19 for more details.
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*
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* BMx280 devices allowed indirect configuration of sampling frequency
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* changing the t_standby duration between measurements, as detailed on
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* section 3.6.3 of the datasheet.
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*/
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int sampling_freq;
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/*
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* Carryover value from temperature conversion, used in pressure
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* calculation.
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*/
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s32 t_fine;
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/*
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* DMA (thus cache coherency maintenance) may require the
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* transfer buffers to live in their own cache lines.
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*/
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union {
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/* Sensor data buffer */
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u8 buf[3];
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/* Calibration data buffers */
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__le16 bmp280_cal_buf[BMP280_CONTIGUOUS_CALIB_REGS / 2];
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__be16 bmp180_cal_buf[BMP180_REG_CALIB_COUNT / 2];
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u8 bmp380_cal_buf[BMP380_CALIB_REG_COUNT];
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/* Miscellaneous, endianess-aware data buffers */
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__le16 le16;
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__be16 be16;
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} __aligned(IIO_DMA_MINALIGN);
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};
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struct bmp280_chip_info {
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unsigned int id_reg;
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const struct iio_chan_spec *channels;
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int num_channels;
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unsigned int start_up_time;
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const int *oversampling_temp_avail;
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int num_oversampling_temp_avail;
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int oversampling_temp_default;
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const int *oversampling_press_avail;
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int num_oversampling_press_avail;
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int oversampling_press_default;
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const int *oversampling_humid_avail;
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int num_oversampling_humid_avail;
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int oversampling_humid_default;
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const int *iir_filter_coeffs_avail;
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int num_iir_filter_coeffs_avail;
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int iir_filter_coeff_default;
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const int (*sampling_freq_avail)[2];
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int num_sampling_freq_avail;
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int sampling_freq_default;
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int (*chip_config)(struct bmp280_data *);
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int (*read_temp)(struct bmp280_data *, int *);
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int (*read_press)(struct bmp280_data *, int *, int *);
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int (*read_humid)(struct bmp280_data *, int *, int *);
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int (*read_calib)(struct bmp280_data *);
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};
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/*
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* These enums are used for indexing into the array of compensation
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* parameters for BMP280.
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@ -905,8 +758,10 @@ static int bmp280_chip_config(struct bmp280_data *data)
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static const int bmp280_oversampling_avail[] = { 1, 2, 4, 8, 16 };
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static const struct bmp280_chip_info bmp280_chip_info = {
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const struct bmp280_chip_info bmp280_chip_info = {
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.id_reg = BMP280_REG_ID,
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.chip_id = BMP280_CHIP_ID,
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.regmap_config = &bmp280_regmap_config,
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.start_up_time = 2000,
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.channels = bmp280_channels,
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.num_channels = 2,
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@ -934,6 +789,7 @@ static const struct bmp280_chip_info bmp280_chip_info = {
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.read_press = bmp280_read_press,
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.read_calib = bmp280_read_calib,
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};
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EXPORT_SYMBOL_NS(bmp280_chip_info, IIO_BMP280);
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static int bme280_chip_config(struct bmp280_data *data)
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{
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@ -953,8 +809,10 @@ static int bme280_chip_config(struct bmp280_data *data)
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return bmp280_chip_config(data);
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}
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static const struct bmp280_chip_info bme280_chip_info = {
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const struct bmp280_chip_info bme280_chip_info = {
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.id_reg = BMP280_REG_ID,
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.chip_id = BME280_CHIP_ID,
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.regmap_config = &bmp280_regmap_config,
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.start_up_time = 2000,
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.channels = bmp280_channels,
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.num_channels = 3,
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@ -977,6 +835,7 @@ static const struct bmp280_chip_info bme280_chip_info = {
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.read_humid = bmp280_read_humid,
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.read_calib = bme280_read_calib,
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};
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EXPORT_SYMBOL_NS(bme280_chip_info, IIO_BMP280);
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/*
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* Helper function to send a command to BMP3XX sensors.
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@ -1319,8 +1178,10 @@ static int bmp380_chip_config(struct bmp280_data *data)
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static const int bmp380_oversampling_avail[] = { 1, 2, 4, 8, 16, 32 };
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static const int bmp380_iir_filter_coeffs_avail[] = { 1, 2, 4, 8, 16, 32, 64, 128};
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static const struct bmp280_chip_info bmp380_chip_info = {
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const struct bmp280_chip_info bmp380_chip_info = {
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.id_reg = BMP380_REG_ID,
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.chip_id = BMP380_CHIP_ID,
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.regmap_config = &bmp380_regmap_config,
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.start_up_time = 2000,
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.channels = bmp380_channels,
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.num_channels = 2,
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@ -1346,6 +1207,7 @@ static const struct bmp280_chip_info bmp380_chip_info = {
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.read_press = bmp380_read_press,
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.read_calib = bmp380_read_calib,
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};
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EXPORT_SYMBOL_NS(bmp380_chip_info, IIO_BMP280);
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static int bmp180_measure(struct bmp280_data *data, u8 ctrl_meas)
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{
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@ -1579,8 +1441,10 @@ static int bmp180_chip_config(struct bmp280_data *data)
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static const int bmp180_oversampling_temp_avail[] = { 1 };
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static const int bmp180_oversampling_press_avail[] = { 1, 2, 4, 8 };
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static const struct bmp280_chip_info bmp180_chip_info = {
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const struct bmp280_chip_info bmp180_chip_info = {
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.id_reg = BMP280_REG_ID,
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.chip_id = BMP180_CHIP_ID,
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.regmap_config = &bmp180_regmap_config,
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.start_up_time = 2000,
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.channels = bmp280_channels,
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.num_channels = 2,
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@ -1600,6 +1464,7 @@ static const struct bmp280_chip_info bmp180_chip_info = {
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.read_press = bmp180_read_press,
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.read_calib = bmp180_read_calib,
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};
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EXPORT_SYMBOL_NS(bmp180_chip_info, IIO_BMP280);
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static irqreturn_t bmp085_eoc_irq(int irq, void *d)
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{
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@ -1661,11 +1526,10 @@ static void bmp280_regulators_disable(void *data)
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int bmp280_common_probe(struct device *dev,
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struct regmap *regmap,
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unsigned int chip,
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const struct bmp280_chip_info *chip_info,
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const char *name,
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int irq)
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{
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const struct bmp280_chip_info *chip_info;
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struct iio_dev *indio_dev;
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struct bmp280_data *data;
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struct gpio_desc *gpiod;
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@ -1684,22 +1548,6 @@ int bmp280_common_probe(struct device *dev,
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indio_dev->info = &bmp280_info;
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indio_dev->modes = INDIO_DIRECT_MODE;
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switch (chip) {
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case BMP180_CHIP_ID:
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chip_info = &bmp180_chip_info;
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break;
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case BMP280_CHIP_ID:
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chip_info = &bmp280_chip_info;
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break;
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case BME280_CHIP_ID:
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chip_info = &bme280_chip_info;
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break;
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case BMP380_CHIP_ID:
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chip_info = &bmp380_chip_info;
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break;
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default:
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return -EINVAL;
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}
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data->chip_info = chip_info;
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/* Apply initial values from chip info structure */
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@ -1751,9 +1599,9 @@ int bmp280_common_probe(struct device *dev,
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ret = regmap_read(regmap, data->chip_info->id_reg, &chip_id);
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if (ret < 0)
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return ret;
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if (chip_id != chip) {
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if (chip_id != data->chip_info->chip_id) {
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dev_err(dev, "bad chip id: expected %x got %x\n",
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chip, chip_id);
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data->chip_info->chip_id, chip_id);
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return -EINVAL;
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}
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@ -8,25 +8,14 @@
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static int bmp280_i2c_probe(struct i2c_client *client)
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{
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struct regmap *regmap;
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const struct regmap_config *regmap_config;
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const struct bmp280_chip_info *chip_info;
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const struct i2c_device_id *id = i2c_client_get_device_id(client);
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switch (id->driver_data) {
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case BMP180_CHIP_ID:
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regmap_config = &bmp180_regmap_config;
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break;
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case BMP280_CHIP_ID:
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case BME280_CHIP_ID:
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regmap_config = &bmp280_regmap_config;
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break;
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case BMP380_CHIP_ID:
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regmap_config = &bmp380_regmap_config;
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break;
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default:
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return -EINVAL;
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}
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chip_info = device_get_match_data(&client->dev);
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if (!chip_info)
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chip_info = (const struct bmp280_chip_info *) id->driver_data;
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regmap = devm_regmap_init_i2c(client, regmap_config);
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regmap = devm_regmap_init_i2c(client, chip_info->regmap_config);
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if (IS_ERR(regmap)) {
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dev_err(&client->dev, "failed to allocate register map\n");
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return PTR_ERR(regmap);
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@ -34,27 +23,27 @@ static int bmp280_i2c_probe(struct i2c_client *client)
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return bmp280_common_probe(&client->dev,
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regmap,
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id->driver_data,
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chip_info,
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id->name,
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client->irq);
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}
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static const struct of_device_id bmp280_of_i2c_match[] = {
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{ .compatible = "bosch,bmp085", .data = (void *)BMP180_CHIP_ID },
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{ .compatible = "bosch,bmp180", .data = (void *)BMP180_CHIP_ID },
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{ .compatible = "bosch,bmp280", .data = (void *)BMP280_CHIP_ID },
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{ .compatible = "bosch,bme280", .data = (void *)BME280_CHIP_ID },
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{ .compatible = "bosch,bmp380", .data = (void *)BMP380_CHIP_ID },
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{ .compatible = "bosch,bmp085", .data = &bmp180_chip_info },
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{ .compatible = "bosch,bmp180", .data = &bmp180_chip_info },
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{ .compatible = "bosch,bmp280", .data = &bmp280_chip_info },
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{ .compatible = "bosch,bme280", .data = &bme280_chip_info },
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{ .compatible = "bosch,bmp380", .data = &bmp380_chip_info },
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{ },
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};
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MODULE_DEVICE_TABLE(of, bmp280_of_i2c_match);
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static const struct i2c_device_id bmp280_i2c_id[] = {
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{"bmp085", BMP180_CHIP_ID },
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{"bmp180", BMP180_CHIP_ID },
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{"bmp280", BMP280_CHIP_ID },
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{"bme280", BME280_CHIP_ID },
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{"bmp380", BMP380_CHIP_ID },
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{"bmp085", (kernel_ulong_t)&bmp180_chip_info },
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{"bmp180", (kernel_ulong_t)&bmp180_chip_info },
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{"bmp280", (kernel_ulong_t)&bmp280_chip_info },
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{"bme280", (kernel_ulong_t)&bme280_chip_info },
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{"bmp380", (kernel_ulong_t)&bmp380_chip_info },
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{ },
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};
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MODULE_DEVICE_TABLE(i2c, bmp280_i2c_id);
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@ -47,8 +47,8 @@ static struct regmap_bus bmp280_regmap_bus = {
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static int bmp280_spi_probe(struct spi_device *spi)
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{
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const struct spi_device_id *id = spi_get_device_id(spi);
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const struct bmp280_chip_info *chip_info;
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struct regmap *regmap;
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const struct regmap_config *regmap_config;
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int ret;
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spi->bits_per_word = 8;
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@ -58,25 +58,14 @@ static int bmp280_spi_probe(struct spi_device *spi)
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return ret;
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}
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switch (id->driver_data) {
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case BMP180_CHIP_ID:
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regmap_config = &bmp180_regmap_config;
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break;
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case BMP280_CHIP_ID:
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case BME280_CHIP_ID:
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regmap_config = &bmp280_regmap_config;
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break;
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case BMP380_CHIP_ID:
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regmap_config = &bmp380_regmap_config;
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break;
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default:
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return -EINVAL;
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}
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chip_info = device_get_match_data(&spi->dev);
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if (!chip_info)
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chip_info = (const struct bmp280_chip_info *) id->driver_data;
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regmap = devm_regmap_init(&spi->dev,
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&bmp280_regmap_bus,
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&spi->dev,
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regmap_config);
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chip_info->regmap_config);
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if (IS_ERR(regmap)) {
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dev_err(&spi->dev, "failed to allocate register map\n");
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return PTR_ERR(regmap);
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@ -84,28 +73,28 @@ static int bmp280_spi_probe(struct spi_device *spi)
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return bmp280_common_probe(&spi->dev,
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regmap,
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id->driver_data,
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chip_info,
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id->name,
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spi->irq);
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}
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static const struct of_device_id bmp280_of_spi_match[] = {
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{ .compatible = "bosch,bmp085", },
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{ .compatible = "bosch,bmp180", },
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{ .compatible = "bosch,bmp181", },
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{ .compatible = "bosch,bmp280", },
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{ .compatible = "bosch,bme280", },
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{ .compatible = "bosch,bmp380", },
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{ .compatible = "bosch,bmp085", .data = &bmp180_chip_info },
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{ .compatible = "bosch,bmp180", .data = &bmp180_chip_info },
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{ .compatible = "bosch,bmp181", .data = &bmp180_chip_info },
|
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{ .compatible = "bosch,bmp280", .data = &bmp280_chip_info },
|
||||
{ .compatible = "bosch,bme280", .data = &bmp280_chip_info },
|
||||
{ .compatible = "bosch,bmp380", .data = &bmp380_chip_info },
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, bmp280_of_spi_match);
|
||||
|
||||
static const struct spi_device_id bmp280_spi_id[] = {
|
||||
{ "bmp180", BMP180_CHIP_ID },
|
||||
{ "bmp181", BMP180_CHIP_ID },
|
||||
{ "bmp280", BMP280_CHIP_ID },
|
||||
{ "bme280", BME280_CHIP_ID },
|
||||
{ "bmp380", BMP380_CHIP_ID },
|
||||
{ "bmp180", (kernel_ulong_t)&bmp180_chip_info },
|
||||
{ "bmp181", (kernel_ulong_t)&bmp180_chip_info },
|
||||
{ "bmp280", (kernel_ulong_t)&bmp280_chip_info },
|
||||
{ "bme280", (kernel_ulong_t)&bmp280_chip_info },
|
||||
{ "bmp380", (kernel_ulong_t)&bmp380_chip_info },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(spi, bmp280_spi_id);
|
||||
|
||||
@ -1,7 +1,10 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
#include <linux/bitops.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/iio/iio.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <linux/regulator/consumer.h>
|
||||
|
||||
|
||||
/* BMP380 specific registers */
|
||||
#define BMP380_REG_CMD 0x7E
|
||||
@ -191,6 +194,165 @@
|
||||
#define BMP280_PRESS_SKIPPED 0x80000
|
||||
#define BMP280_HUMIDITY_SKIPPED 0x8000
|
||||
|
||||
/* Core exported structs */
|
||||
|
||||
static const char *const bmp280_supply_names[] = {
|
||||
"vddd", "vdda"
|
||||
};
|
||||
|
||||
#define BMP280_NUM_SUPPLIES ARRAY_SIZE(bmp280_supply_names)
|
||||
|
||||
struct bmp180_calib {
|
||||
s16 AC1;
|
||||
s16 AC2;
|
||||
s16 AC3;
|
||||
u16 AC4;
|
||||
u16 AC5;
|
||||
u16 AC6;
|
||||
s16 B1;
|
||||
s16 B2;
|
||||
s16 MB;
|
||||
s16 MC;
|
||||
s16 MD;
|
||||
};
|
||||
|
||||
/* See datasheet Section 4.2.2. */
|
||||
struct bmp280_calib {
|
||||
u16 T1;
|
||||
s16 T2;
|
||||
s16 T3;
|
||||
u16 P1;
|
||||
s16 P2;
|
||||
s16 P3;
|
||||
s16 P4;
|
||||
s16 P5;
|
||||
s16 P6;
|
||||
s16 P7;
|
||||
s16 P8;
|
||||
s16 P9;
|
||||
u8 H1;
|
||||
s16 H2;
|
||||
u8 H3;
|
||||
s16 H4;
|
||||
s16 H5;
|
||||
s8 H6;
|
||||
};
|
||||
|
||||
/* See datasheet Section 3.11.1. */
|
||||
struct bmp380_calib {
|
||||
u16 T1;
|
||||
u16 T2;
|
||||
s8 T3;
|
||||
s16 P1;
|
||||
s16 P2;
|
||||
s8 P3;
|
||||
s8 P4;
|
||||
u16 P5;
|
||||
u16 P6;
|
||||
s8 P7;
|
||||
s8 P8;
|
||||
s16 P9;
|
||||
s8 P10;
|
||||
s8 P11;
|
||||
};
|
||||
|
||||
struct bmp280_data {
|
||||
struct device *dev;
|
||||
struct mutex lock;
|
||||
struct regmap *regmap;
|
||||
struct completion done;
|
||||
bool use_eoc;
|
||||
const struct bmp280_chip_info *chip_info;
|
||||
union {
|
||||
struct bmp180_calib bmp180;
|
||||
struct bmp280_calib bmp280;
|
||||
struct bmp380_calib bmp380;
|
||||
} calib;
|
||||
struct regulator_bulk_data supplies[BMP280_NUM_SUPPLIES];
|
||||
unsigned int start_up_time; /* in microseconds */
|
||||
|
||||
/* log of base 2 of oversampling rate */
|
||||
u8 oversampling_press;
|
||||
u8 oversampling_temp;
|
||||
u8 oversampling_humid;
|
||||
u8 iir_filter_coeff;
|
||||
|
||||
/*
|
||||
* BMP380 devices introduce sampling frequency configuration. See
|
||||
* datasheet sections 3.3.3. and 4.3.19 for more details.
|
||||
*
|
||||
* BMx280 devices allowed indirect configuration of sampling frequency
|
||||
* changing the t_standby duration between measurements, as detailed on
|
||||
* section 3.6.3 of the datasheet.
|
||||
*/
|
||||
int sampling_freq;
|
||||
|
||||
/*
|
||||
* Carryover value from temperature conversion, used in pressure
|
||||
* calculation.
|
||||
*/
|
||||
s32 t_fine;
|
||||
|
||||
/*
|
||||
* DMA (thus cache coherency maintenance) may require the
|
||||
* transfer buffers to live in their own cache lines.
|
||||
*/
|
||||
union {
|
||||
/* Sensor data buffer */
|
||||
u8 buf[3];
|
||||
/* Calibration data buffers */
|
||||
__le16 bmp280_cal_buf[BMP280_CONTIGUOUS_CALIB_REGS / 2];
|
||||
__be16 bmp180_cal_buf[BMP180_REG_CALIB_COUNT / 2];
|
||||
u8 bmp380_cal_buf[BMP380_CALIB_REG_COUNT];
|
||||
/* Miscellaneous, endianess-aware data buffers */
|
||||
__le16 le16;
|
||||
__be16 be16;
|
||||
} __aligned(IIO_DMA_MINALIGN);
|
||||
};
|
||||
|
||||
struct bmp280_chip_info {
|
||||
unsigned int id_reg;
|
||||
const unsigned int chip_id;
|
||||
|
||||
const struct regmap_config *regmap_config;
|
||||
|
||||
const struct iio_chan_spec *channels;
|
||||
int num_channels;
|
||||
unsigned int start_up_time;
|
||||
|
||||
const int *oversampling_temp_avail;
|
||||
int num_oversampling_temp_avail;
|
||||
int oversampling_temp_default;
|
||||
|
||||
const int *oversampling_press_avail;
|
||||
int num_oversampling_press_avail;
|
||||
int oversampling_press_default;
|
||||
|
||||
const int *oversampling_humid_avail;
|
||||
int num_oversampling_humid_avail;
|
||||
int oversampling_humid_default;
|
||||
|
||||
const int *iir_filter_coeffs_avail;
|
||||
int num_iir_filter_coeffs_avail;
|
||||
int iir_filter_coeff_default;
|
||||
|
||||
const int (*sampling_freq_avail)[2];
|
||||
int num_sampling_freq_avail;
|
||||
int sampling_freq_default;
|
||||
|
||||
int (*chip_config)(struct bmp280_data *);
|
||||
int (*read_temp)(struct bmp280_data *, int *);
|
||||
int (*read_press)(struct bmp280_data *, int *, int *);
|
||||
int (*read_humid)(struct bmp280_data *, int *, int *);
|
||||
int (*read_calib)(struct bmp280_data *);
|
||||
};
|
||||
|
||||
/* Chip infos for each variant */
|
||||
extern const struct bmp280_chip_info bmp180_chip_info;
|
||||
extern const struct bmp280_chip_info bmp280_chip_info;
|
||||
extern const struct bmp280_chip_info bme280_chip_info;
|
||||
extern const struct bmp280_chip_info bmp380_chip_info;
|
||||
|
||||
/* Regmap configurations */
|
||||
extern const struct regmap_config bmp180_regmap_config;
|
||||
extern const struct regmap_config bmp280_regmap_config;
|
||||
@ -199,7 +361,7 @@ extern const struct regmap_config bmp380_regmap_config;
|
||||
/* Probe called from different transports */
|
||||
int bmp280_common_probe(struct device *dev,
|
||||
struct regmap *regmap,
|
||||
unsigned int chip,
|
||||
const struct bmp280_chip_info *,
|
||||
const char *name,
|
||||
int irq);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user