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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.c112
1 files changed, 26 insertions, 86 deletions
diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
index b8a7469cdae4..2edfcb4819b7 100644
--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -10,7 +10,6 @@
* 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
*/
#include <linux/module.h>
@@ -38,7 +37,6 @@ enum chip_ids {
BMA150,
BMA180,
BMA250,
- BMA254,
};
struct bma180_data;
@@ -55,11 +53,10 @@ struct bma180_part_info {
u8 int_reset_reg, int_reset_mask;
u8 sleep_reg, sleep_mask;
- u8 bw_reg, bw_mask;
+ u8 bw_reg, bw_mask, bw_offset;
u8 scale_reg, scale_mask;
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, softreset_val;
int (*chip_config)(struct bma180_data *data);
@@ -112,7 +109,6 @@ struct bma180_part_info {
#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 */
/* Chip power modes */
#define BMA180_LOW_POWER 0x03
@@ -127,29 +123,13 @@ struct bma180_part_info {
#define BMA250_RANGE_MASK GENMASK(3, 0) /* Range of accel values */
#define BMA250_BW_MASK GENMASK(4, 0) /* Accel bandwidth */
+#define BMA250_BW_OFFSET 8
#define BMA250_SUSPEND_MASK BIT(7) /* chip will sleep */
#define BMA250_LOWPOWER_MASK BIT(6)
#define BMA250_DATA_INTEN_MASK BIT(4)
#define BMA250_INT1_DATA_MASK BIT(0)
#define BMA250_INT_RESET_MASK BIT(7) /* Reset pending interrupts */
-#define BMA254_RANGE_REG 0x0f
-#define BMA254_BW_REG 0x10
-#define BMA254_POWER_REG 0x11
-#define BMA254_RESET_REG 0x14
-#define BMA254_INT_ENABLE_REG 0x17
-#define BMA254_INT_MAP_REG 0x1a
-#define BMA254_INT_RESET_REG 0x21
-
-#define BMA254_RANGE_MASK GENMASK(3, 0) /* Range of accel values */
-#define BMA254_BW_MASK GENMASK(4, 0) /* Accel bandwidth */
-#define BMA254_SUSPEND_MASK BIT(7) /* chip will sleep */
-#define BMA254_LOWPOWER_MASK BIT(6)
-#define BMA254_DATA_INTEN_MASK BIT(4)
-#define BMA254_INT2_DATA_MASK BIT(7)
-#define BMA254_INT1_DATA_MASK BIT(0)
-#define BMA254_INT_RESET_MASK BIT(7) /* Reset pending interrupts */
-
struct bma180_data {
struct regulator *vdd_supply;
struct regulator *vddio_supply;
@@ -162,7 +142,11 @@ struct bma180_data {
int scale;
int bw;
bool pmode;
- u8 buff[16]; /* 3x 16-bit + 8-bit + padding + timestamp */
+ /* Ensure timestamp is naturally aligned */
+ struct {
+ s16 chan[4];
+ s64 timestamp __aligned(8);
+ } scan;
};
enum bma180_chan {
@@ -178,8 +162,8 @@ 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 };
-static int bma25x_bw_table[] = { 8, 16, 31, 63, 125, 250 }; /* Hz */
-static int bma25x_scale_table[] = { 0, 0, 0, 38344, 0, 76590, 0, 0, 153180, 0,
+static int bma250_bw_table[] = { 8, 16, 31, 63, 125, 250, 500, 1000 }; /* Hz */
+static int bma250_scale_table[] = { 0, 0, 0, 38344, 0, 76590, 0, 0, 153180, 0,
0, 0, 306458 };
static int bma180_get_data_reg(struct bma180_data *data, enum bma180_chan chan)
@@ -283,7 +267,8 @@ static int bma180_set_bw(struct bma180_data *data, int val)
for (i = 0; i < data->part_info->num_bw; ++i) {
if (data->part_info->bw_table[i] == val) {
ret = bma180_set_bits(data, data->part_info->bw_reg,
- data->part_info->bw_mask, i);
+ data->part_info->bw_mask,
+ i + data->part_info->bw_offset);
if (ret) {
dev_err(&data->client->dev,
"failed to set bandwidth\n");
@@ -425,7 +410,7 @@ err:
return ret;
}
-static int bma25x_chip_config(struct bma180_data *data)
+static int bma250_chip_config(struct bma180_data *data)
{
int ret = bma180_chip_init(data);
@@ -444,8 +429,7 @@ static int bma25x_chip_config(struct bma180_data *data)
* This enables dataready interrupt on the INT1 pin
* FIXME: support using the INT2 pin
*/
- ret = bma180_set_bits(data, data->part_info->int_map_reg,
- data->part_info->int_enable_dataready_int1_mask, 1);
+ ret = bma180_set_bits(data, BMA250_INT_MAP_REG, BMA250_INT1_DATA_MASK, 1);
if (ret)
goto err;
@@ -482,7 +466,7 @@ err:
dev_err(&data->client->dev, "failed to disable the chip\n");
}
-static void bma25x_chip_disable(struct bma180_data *data)
+static void bma250_chip_disable(struct bma180_data *data)
{
if (bma180_set_new_data_intr_state(data, false))
goto err;
@@ -768,14 +752,6 @@ static const struct iio_chan_spec bma250_channels[] = {
IIO_CHAN_SOFT_TIMESTAMP(4),
};
-static const struct iio_chan_spec bma254_channels[] = {
- BMA180_ACC_CHANNEL(X, 12),
- BMA180_ACC_CHANNEL(Y, 12),
- BMA180_ACC_CHANNEL(Z, 12),
- BMA180_TEMP_CHANNEL,
- IIO_CHAN_SOFT_TIMESTAMP(4),
-};
-
static const struct bma180_part_info bma180_part_info[] = {
[BMA023] = {
.chip_id = BMA023_ID_REG_VAL,
@@ -865,10 +841,10 @@ static const struct bma180_part_info bma180_part_info[] = {
.chip_id = BMA250_ID_REG_VAL,
.channels = bma250_channels,
.num_channels = ARRAY_SIZE(bma250_channels),
- .scale_table = bma25x_scale_table,
- .num_scales = ARRAY_SIZE(bma25x_scale_table),
- .bw_table = bma25x_bw_table,
- .num_bw = ARRAY_SIZE(bma25x_bw_table),
+ .scale_table = bma250_scale_table,
+ .num_scales = ARRAY_SIZE(bma250_scale_table),
+ .bw_table = bma250_bw_table,
+ .num_bw = ARRAY_SIZE(bma250_bw_table),
.temp_offset = 48, /* 0 LSB @ 24 degree C */
.int_reset_reg = BMA250_INT_RESET_REG,
.int_reset_mask = BMA250_INT_RESET_MASK,
@@ -876,6 +852,7 @@ static const struct bma180_part_info bma180_part_info[] = {
.sleep_mask = BMA250_SUSPEND_MASK,
.bw_reg = BMA250_BW_REG,
.bw_mask = BMA250_BW_MASK,
+ .bw_offset = BMA250_BW_OFFSET,
.scale_reg = BMA250_RANGE_REG,
.scale_mask = BMA250_RANGE_MASK,
.power_reg = BMA250_POWER_REG,
@@ -883,41 +860,10 @@ static const struct bma180_part_info bma180_part_info[] = {
.lowpower_val = 1,
.int_enable_reg = BMA250_INT_ENABLE_REG,
.int_enable_mask = BMA250_DATA_INTEN_MASK,
- .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,
- },
- [BMA254] = {
- .chip_id = BMA254_ID_REG_VAL,
- .channels = bma254_channels,
- .num_channels = ARRAY_SIZE(bma254_channels),
- .scale_table = bma25x_scale_table,
- .num_scales = ARRAY_SIZE(bma25x_scale_table),
- .bw_table = bma25x_bw_table,
- .num_bw = ARRAY_SIZE(bma25x_bw_table),
- .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,
- .sleep_mask = BMA254_SUSPEND_MASK,
- .bw_reg = BMA254_BW_REG,
- .bw_mask = BMA254_BW_MASK,
- .scale_reg = BMA254_RANGE_REG,
- .scale_mask = BMA254_RANGE_MASK,
- .power_reg = BMA254_POWER_REG,
- .power_mask = BMA254_LOWPOWER_MASK,
- .lowpower_val = 1,
- .int_enable_reg = BMA254_INT_ENABLE_REG,
- .int_enable_mask = BMA254_DATA_INTEN_MASK,
- .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,
+ .chip_config = bma250_chip_config,
+ .chip_disable = bma250_chip_disable,
},
};
@@ -938,12 +884,12 @@ static irqreturn_t bma180_trigger_handler(int irq, void *p)
mutex_unlock(&data->mutex);
goto err;
}
- ((s16 *)data->buff)[i++] = ret;
+ data->scan.chan[i++] = ret;
}
mutex_unlock(&data->mutex);
- iio_push_to_buffers_with_timestamp(indio_dev, data->buff, time_ns);
+ iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, time_ns);
err:
iio_trigger_notify_done(indio_dev->trig);
@@ -997,8 +943,7 @@ static int bma180_probe(struct i2c_client *client,
chip = id->driver_data;
data->part_info = &bma180_part_info[chip];
- ret = iio_read_mount_matrix(dev, "mount-matrix",
- &data->orientation);
+ ret = iio_read_mount_matrix(dev, &data->orientation);
if (ret)
return ret;
@@ -1045,7 +990,7 @@ static int bma180_probe(struct i2c_client *client,
if (client->irq > 0) {
data->trig = iio_trigger_alloc(dev, "%s-dev%d", indio_dev->name,
- indio_dev->id);
+ iio_device_id(indio_dev));
if (!data->trig) {
ret = -ENOMEM;
goto err_chip_disable;
@@ -1158,7 +1103,6 @@ static const struct i2c_device_id bma180_ids[] = {
{ "bma150", BMA150 },
{ "bma180", BMA180 },
{ "bma250", BMA250 },
- { "bma254", BMA254 },
{ "smb380", BMA150 },
{ }
};
@@ -1183,10 +1127,6 @@ static const struct of_device_id bma180_of_match[] = {
.data = (void *)BMA250
},
{
- .compatible = "bosch,bma254",
- .data = (void *)BMA254
- },
- {
.compatible = "bosch,smb380",
.data = (void *)BMA150
},
@@ -1209,5 +1149,5 @@ module_i2c_driver(bma180_driver);
MODULE_AUTHOR("Kravchenko Oleksandr <x0199363@ti.com>");
MODULE_AUTHOR("Texas Instruments, Inc.");
-MODULE_DESCRIPTION("Bosch BMA023/BMA1x0/BMA25x triaxial acceleration sensor");
+MODULE_DESCRIPTION("Bosch BMA023/BMA1x0/BMA250 triaxial acceleration sensor");
MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 23:31:20 +0000