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iio: accel: bma180: Add support for BMA250E 

The BMA250E adds a new fifo mode and is fully backwards compatible
with the BMA250, but with a different chip-id.

This commit adds support for it by adjusting the chip-id check and
otherwise treating it as a regular BMA250.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Hans de Goede 2017-05-16 14:51:58 +02:00 committed by Jonathan Cameron
parent 9ece370b02
commit f1320b0951
1 changed files with 23 additions and 1 deletions
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24
drivers/iio/accel/bma180.c
View File

@ -36,6 +36,7 @@
enum chip_ids {
BMA180,
BMA250,
BMA250E,
};
struct bma180_data;
@ -55,6 +56,7 @@ struct bma180_part_info {
u8 power_reg, power_mask, lowpower_val;
u8 int_enable_reg, int_enable_mask;
u8 softreset_reg;
u8 chip_id;
int (*chip_config)(struct bma180_data *data);
void (*chip_disable)(struct bma180_data *data);
@ -112,6 +114,8 @@ struct bma180_part_info {
#define BMA250_INT1_DATA_MASK BIT(0)
#define BMA250_INT_RESET_MASK BIT(7) /* Reset pending interrupts */
#define BMA250E_CHIP_ID 0xf9
struct bma180_data {
struct i2c_client *client;
struct iio_trigger *trig;
@ -309,7 +313,7 @@ static int bma180_chip_init(struct bma180_data *data)
if (ret < 0)
return ret;
if (ret != BMA180_ID_REG_VAL)
if (ret != data->part_info->chip_id)
return -ENODEV;
ret = bma180_soft_reset(data);
@ -632,6 +636,7 @@ static const struct bma180_part_info bma180_part_info[] = {
BMA180_TCO_Z, BMA180_MODE_CONFIG, BMA180_LOW_POWER,
BMA180_CTRL_REG3, BMA180_NEW_DATA_INT,
BMA180_RESET,
BMA180_CHIP_ID,
bma180_chip_config,
bma180_chip_disable,
},
@ -646,6 +651,22 @@ static const struct bma180_part_info bma180_part_info[] = {
BMA250_POWER_REG, BMA250_LOWPOWER_MASK, 1,
BMA250_INT_ENABLE_REG, BMA250_DATA_INTEN_MASK,
BMA250_RESET_REG,
BMA180_CHIP_ID,
bma250_chip_config,
bma250_chip_disable,
},
[BMA250E] = {
bma250_channels, ARRAY_SIZE(bma250_channels),
bma250_scale_table, ARRAY_SIZE(bma250_scale_table),
bma250_bw_table, ARRAY_SIZE(bma250_bw_table),
BMA250_INT_RESET_REG, BMA250_INT_RESET_MASK,
BMA250_POWER_REG, BMA250_SUSPEND_MASK,
BMA250_BW_REG, BMA250_BW_MASK,
BMA250_RANGE_REG, BMA250_RANGE_MASK,
BMA250_POWER_REG, BMA250_LOWPOWER_MASK, 1,
BMA250_INT_ENABLE_REG, BMA250_DATA_INTEN_MASK,
BMA250_RESET_REG,
BMA250E_CHIP_ID,
bma250_chip_config,
bma250_chip_disable,
},
@ -845,6 +866,7 @@ static SIMPLE_DEV_PM_OPS(bma180_pm_ops, bma180_suspend, bma180_resume);
static struct i2c_device_id bma180_ids[] = {
{ "bma180", BMA180 },
{ "bma250", BMA250 },
{ "bma250e", BMA250E },
{ }
};