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path: root/drivers/iio/accel/bma180.c
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Diffstat (limited to 'drivers/iio/accel/bma180.c')
-rw-r--r--drivers/iio/accel/bma180.c208
1 files changed, 195 insertions, 13 deletions
diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
index fcd91d5f05fd..265722e4b13f 100644
--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -7,6 +7,7 @@
* Support for BMA250 (c) Peter Meerwald <pmeerw@pmeerw.net>
*
* SPI is not supported by driver
+ * BMA023/BMA150/SMB380: 7-bit I2C slave address 0x38
* BMA180: 7-bit I2C slave address 0x40 or 0x41
* BMA250: 7-bit I2C slave address 0x18 or 0x19
* BMA254: 7-bit I2C slave address 0x18 or 0x19
@@ -33,6 +34,8 @@
#define BMA180_IRQ_NAME "bma180_event"
enum chip_ids {
+ BMA023,
+ BMA150,
BMA180,
BMA250,
BMA254,
@@ -48,7 +51,7 @@ struct bma180_part_info {
unsigned int num_scales;
const int *bw_table;
unsigned int num_bw;
- int center_temp;
+ int temp_offset;
u8 int_reset_reg, int_reset_mask;
u8 sleep_reg, sleep_mask;
@@ -57,13 +60,25 @@ struct bma180_part_info {
u8 power_reg, power_mask, lowpower_val;
u8 int_enable_reg, int_enable_mask;
u8 int_map_reg, int_enable_dataready_int1_mask;
- u8 softreset_reg;
+ u8 softreset_reg, softreset_val;
int (*chip_config)(struct bma180_data *data);
void (*chip_disable)(struct bma180_data *data);
};
/* Register set */
+#define BMA023_CTRL_REG0 0x0a
+#define BMA023_CTRL_REG1 0x0b
+#define BMA023_CTRL_REG2 0x14
+#define BMA023_CTRL_REG3 0x15
+
+#define BMA023_RANGE_MASK GENMASK(4, 3) /* Range of accel values */
+#define BMA023_BW_MASK GENMASK(2, 0) /* Accel bandwidth */
+#define BMA023_SLEEP BIT(0)
+#define BMA023_INT_RESET_MASK BIT(6)
+#define BMA023_NEW_DATA_INT BIT(5) /* Intr every new accel data is ready */
+#define BMA023_RESET_VAL BIT(1)
+
#define BMA180_CHIP_ID 0x00 /* Need to distinguish BMA180 from other */
#define BMA180_ACC_X_LSB 0x02 /* First of 6 registers of accel data */
#define BMA180_TEMP 0x08
@@ -94,6 +109,7 @@ struct bma180_part_info {
/* We have to write this value in reset register to do soft reset */
#define BMA180_RESET_VAL 0xb6
+#define BMA023_ID_REG_VAL 0x02
#define BMA180_ID_REG_VAL 0x03
#define BMA250_ID_REG_VAL 0x03
#define BMA254_ID_REG_VAL 0xfa /* 250 decimal */
@@ -156,6 +172,9 @@ enum bma180_chan {
TEMP
};
+static int bma023_bw_table[] = { 25, 50, 100, 190, 375, 750, 1500 }; /* Hz */
+static int bma023_scale_table[] = { 2452, 4903, 9709, };
+
static int bma180_bw_table[] = { 10, 20, 40, 75, 150, 300 }; /* Hz */
static int bma180_scale_table[] = { 1275, 1863, 2452, 3727, 4903, 9709, 19417 };
@@ -319,7 +338,8 @@ static int bma180_set_pmode(struct bma180_data *data, bool mode)
static int bma180_soft_reset(struct bma180_data *data)
{
int ret = i2c_smbus_write_byte_data(data->client,
- data->part_info->softreset_reg, BMA180_RESET_VAL);
+ data->part_info->softreset_reg,
+ data->part_info->softreset_val);
if (ret)
dev_err(&data->client->dev, "failed to reset the chip\n");
@@ -349,11 +369,28 @@ static int bma180_chip_init(struct bma180_data *data)
*/
msleep(20);
- ret = bma180_set_new_data_intr_state(data, false);
+ return bma180_set_new_data_intr_state(data, false);
+}
+
+static int bma023_chip_config(struct bma180_data *data)
+{
+ int ret = bma180_chip_init(data);
+
if (ret)
- return ret;
+ goto err;
+
+ ret = bma180_set_bw(data, 50); /* 50 Hz */
+ if (ret)
+ goto err;
+ ret = bma180_set_scale(data, 2452); /* 2 G */
+ if (ret)
+ goto err;
- return bma180_set_pmode(data, false);
+ return 0;
+
+err:
+ dev_err(&data->client->dev, "failed to config the chip\n");
+ return ret;
}
static int bma180_chip_config(struct bma180_data *data)
@@ -362,6 +399,9 @@ static int bma180_chip_config(struct bma180_data *data)
if (ret)
goto err;
+ ret = bma180_set_pmode(data, false);
+ if (ret)
+ goto err;
ret = bma180_set_bits(data, BMA180_CTRL_REG0, BMA180_DIS_WAKE_UP, 1);
if (ret)
goto err;
@@ -391,6 +431,9 @@ static int bma25x_chip_config(struct bma180_data *data)
if (ret)
goto err;
+ ret = bma180_set_pmode(data, false);
+ if (ret)
+ goto err;
ret = bma180_set_bw(data, 16); /* 16 Hz */
if (ret)
goto err;
@@ -413,6 +456,17 @@ err:
return ret;
}
+static void bma023_chip_disable(struct bma180_data *data)
+{
+ if (bma180_set_sleep_state(data, true))
+ goto err;
+
+ return;
+
+err:
+ dev_err(&data->client->dev, "failed to disable the chip\n");
+}
+
static void bma180_chip_disable(struct bma180_data *data)
{
if (bma180_set_new_data_intr_state(data, false))
@@ -512,8 +566,12 @@ static int bma180_read_raw(struct iio_dev *indio_dev,
iio_device_release_direct_mode(indio_dev);
if (ret < 0)
return ret;
- *val = sign_extend32(ret >> chan->scan_type.shift,
- chan->scan_type.realbits - 1);
+ if (chan->scan_type.sign == 's') {
+ *val = sign_extend32(ret >> chan->scan_type.shift,
+ chan->scan_type.realbits - 1);
+ } else {
+ *val = ret;
+ }
return IIO_VAL_INT;
case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
*val = data->bw;
@@ -531,7 +589,7 @@ static int bma180_read_raw(struct iio_dev *indio_dev,
return -EINVAL;
}
case IIO_CHAN_INFO_OFFSET:
- *val = data->part_info->center_temp;
+ *val = data->part_info->temp_offset;
return IIO_VAL_INT;
default:
return -EINVAL;
@@ -609,6 +667,11 @@ static const struct iio_enum bma180_power_mode_enum = {
.set = bma180_set_power_mode,
};
+static const struct iio_chan_spec_ext_info bma023_ext_info[] = {
+ IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, bma180_accel_get_mount_matrix),
+ { }
+};
+
static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
IIO_ENUM("power_mode", true, &bma180_power_mode_enum),
IIO_ENUM_AVAILABLE("power_mode", &bma180_power_mode_enum),
@@ -616,6 +679,35 @@ static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
{ }
};
+#define BMA023_ACC_CHANNEL(_axis, _bits) { \
+ .type = IIO_ACCEL, \
+ .modified = 1, \
+ .channel2 = IIO_MOD_##_axis, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
+ BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \
+ .scan_index = AXIS_##_axis, \
+ .scan_type = { \
+ .sign = 's', \
+ .realbits = _bits, \
+ .storagebits = 16, \
+ .shift = 16 - _bits, \
+ }, \
+ .ext_info = bma023_ext_info, \
+}
+
+#define BMA150_TEMP_CHANNEL { \
+ .type = IIO_TEMP, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+ BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_OFFSET), \
+ .scan_index = TEMP, \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = 8, \
+ .storagebits = 16, \
+ }, \
+}
+
#define BMA180_ACC_CHANNEL(_axis, _bits) { \
.type = IIO_ACCEL, \
.modified = 1, \
@@ -645,6 +737,21 @@ static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
}, \
}
+static const struct iio_chan_spec bma023_channels[] = {
+ BMA023_ACC_CHANNEL(X, 10),
+ BMA023_ACC_CHANNEL(Y, 10),
+ BMA023_ACC_CHANNEL(Z, 10),
+ IIO_CHAN_SOFT_TIMESTAMP(4),
+};
+
+static const struct iio_chan_spec bma150_channels[] = {
+ BMA023_ACC_CHANNEL(X, 10),
+ BMA023_ACC_CHANNEL(Y, 10),
+ BMA023_ACC_CHANNEL(Z, 10),
+ BMA150_TEMP_CHANNEL,
+ IIO_CHAN_SOFT_TIMESTAMP(4),
+};
+
static const struct iio_chan_spec bma180_channels[] = {
BMA180_ACC_CHANNEL(X, 14),
BMA180_ACC_CHANNEL(Y, 14),
@@ -670,6 +777,63 @@ static const struct iio_chan_spec bma254_channels[] = {
};
static const struct bma180_part_info bma180_part_info[] = {
+ [BMA023] = {
+ .chip_id = BMA023_ID_REG_VAL,
+ .channels = bma023_channels,
+ .num_channels = ARRAY_SIZE(bma023_channels),
+ .scale_table = bma023_scale_table,
+ .num_scales = ARRAY_SIZE(bma023_scale_table),
+ .bw_table = bma023_bw_table,
+ .num_bw = ARRAY_SIZE(bma023_bw_table),
+ /* No temperature channel */
+ .temp_offset = 0,
+ .int_reset_reg = BMA023_CTRL_REG0,
+ .int_reset_mask = BMA023_INT_RESET_MASK,
+ .sleep_reg = BMA023_CTRL_REG0,
+ .sleep_mask = BMA023_SLEEP,
+ .bw_reg = BMA023_CTRL_REG2,
+ .bw_mask = BMA023_BW_MASK,
+ .scale_reg = BMA023_CTRL_REG2,
+ .scale_mask = BMA023_RANGE_MASK,
+ /* No power mode on bma023 */
+ .power_reg = 0,
+ .power_mask = 0,
+ .lowpower_val = 0,
+ .int_enable_reg = BMA023_CTRL_REG3,
+ .int_enable_mask = BMA023_NEW_DATA_INT,
+ .softreset_reg = BMA023_CTRL_REG0,
+ .softreset_val = BMA023_RESET_VAL,
+ .chip_config = bma023_chip_config,
+ .chip_disable = bma023_chip_disable,
+ },
+ [BMA150] = {
+ .chip_id = BMA023_ID_REG_VAL,
+ .channels = bma150_channels,
+ .num_channels = ARRAY_SIZE(bma150_channels),
+ .scale_table = bma023_scale_table,
+ .num_scales = ARRAY_SIZE(bma023_scale_table),
+ .bw_table = bma023_bw_table,
+ .num_bw = ARRAY_SIZE(bma023_bw_table),
+ .temp_offset = -60, /* 0 LSB @ -30 degree C */
+ .int_reset_reg = BMA023_CTRL_REG0,
+ .int_reset_mask = BMA023_INT_RESET_MASK,
+ .sleep_reg = BMA023_CTRL_REG0,
+ .sleep_mask = BMA023_SLEEP,
+ .bw_reg = BMA023_CTRL_REG2,
+ .bw_mask = BMA023_BW_MASK,
+ .scale_reg = BMA023_CTRL_REG2,
+ .scale_mask = BMA023_RANGE_MASK,
+ /* No power mode on bma150 */
+ .power_reg = 0,
+ .power_mask = 0,
+ .lowpower_val = 0,
+ .int_enable_reg = BMA023_CTRL_REG3,
+ .int_enable_mask = BMA023_NEW_DATA_INT,
+ .softreset_reg = BMA023_CTRL_REG0,
+ .softreset_val = BMA023_RESET_VAL,
+ .chip_config = bma023_chip_config,
+ .chip_disable = bma023_chip_disable,
+ },
[BMA180] = {
.chip_id = BMA180_ID_REG_VAL,
.channels = bma180_channels,
@@ -678,7 +842,7 @@ static const struct bma180_part_info bma180_part_info[] = {
.num_scales = ARRAY_SIZE(bma180_scale_table),
.bw_table = bma180_bw_table,
.num_bw = ARRAY_SIZE(bma180_bw_table),
- .center_temp = 48, /* 0 LSB @ 24 degree C */
+ .temp_offset = 48, /* 0 LSB @ 24 degree C */
.int_reset_reg = BMA180_CTRL_REG0,
.int_reset_mask = BMA180_RESET_INT,
.sleep_reg = BMA180_CTRL_REG0,
@@ -693,6 +857,7 @@ static const struct bma180_part_info bma180_part_info[] = {
.int_enable_reg = BMA180_CTRL_REG3,
.int_enable_mask = BMA180_NEW_DATA_INT,
.softreset_reg = BMA180_RESET,
+ .softreset_val = BMA180_RESET_VAL,
.chip_config = bma180_chip_config,
.chip_disable = bma180_chip_disable,
},
@@ -704,7 +869,7 @@ static const struct bma180_part_info bma180_part_info[] = {
.num_scales = ARRAY_SIZE(bma25x_scale_table),
.bw_table = bma25x_bw_table,
.num_bw = ARRAY_SIZE(bma25x_bw_table),
- .center_temp = 48, /* 0 LSB @ 24 degree C */
+ .temp_offset = 48, /* 0 LSB @ 24 degree C */
.int_reset_reg = BMA250_INT_RESET_REG,
.int_reset_mask = BMA250_INT_RESET_MASK,
.sleep_reg = BMA250_POWER_REG,
@@ -721,6 +886,7 @@ static const struct bma180_part_info bma180_part_info[] = {
.int_map_reg = BMA250_INT_MAP_REG,
.int_enable_dataready_int1_mask = BMA250_INT1_DATA_MASK,
.softreset_reg = BMA250_RESET_REG,
+ .softreset_val = BMA180_RESET_VAL,
.chip_config = bma25x_chip_config,
.chip_disable = bma25x_chip_disable,
},
@@ -732,7 +898,7 @@ static const struct bma180_part_info bma180_part_info[] = {
.num_scales = ARRAY_SIZE(bma25x_scale_table),
.bw_table = bma25x_bw_table,
.num_bw = ARRAY_SIZE(bma25x_bw_table),
- .center_temp = 46, /* 0 LSB @ 23 degree C */
+ .temp_offset = 46, /* 0 LSB @ 23 degree C */
.int_reset_reg = BMA254_INT_RESET_REG,
.int_reset_mask = BMA254_INT_RESET_MASK,
.sleep_reg = BMA254_POWER_REG,
@@ -749,6 +915,7 @@ static const struct bma180_part_info bma180_part_info[] = {
.int_map_reg = BMA254_INT_MAP_REG,
.int_enable_dataready_int1_mask = BMA254_INT1_DATA_MASK,
.softreset_reg = BMA254_RESET_REG,
+ .softreset_val = BMA180_RESET_VAL,
.chip_config = bma25x_chip_config,
.chip_disable = bma25x_chip_disable,
},
@@ -990,9 +1157,12 @@ static SIMPLE_DEV_PM_OPS(bma180_pm_ops, bma180_suspend, bma180_resume);
#endif
static const struct i2c_device_id bma180_ids[] = {
+ { "bma023", BMA023 },
+ { "bma150", BMA150 },
{ "bma180", BMA180 },
{ "bma250", BMA250 },
{ "bma254", BMA254 },
+ { "smb380", BMA150 },
{ }
};
@@ -1000,6 +1170,14 @@ MODULE_DEVICE_TABLE(i2c, bma180_ids);
static const struct of_device_id bma180_of_match[] = {
{
+ .compatible = "bosch,bma023",
+ .data = (void *)BMA023
+ },
+ {
+ .compatible = "bosch,bma150",
+ .data = (void *)BMA150
+ },
+ {
.compatible = "bosch,bma180",
.data = (void *)BMA180
},
@@ -1011,6 +1189,10 @@ static const struct of_device_id bma180_of_match[] = {
.compatible = "bosch,bma254",
.data = (void *)BMA254
},
+ {
+ .compatible = "bosch,smb380",
+ .data = (void *)BMA150
+ },
{ }
};
MODULE_DEVICE_TABLE(of, bma180_of_match);
@@ -1030,5 +1212,5 @@ module_i2c_driver(bma180_driver);
MODULE_AUTHOR("Kravchenko Oleksandr <x0199363@ti.com>");
MODULE_AUTHOR("Texas Instruments, Inc.");
-MODULE_DESCRIPTION("Bosch BMA180/BMA25x triaxial acceleration sensor");
+MODULE_DESCRIPTION("Bosch BMA023/BMA1x0/BMA25x triaxial acceleration sensor");
MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.