Commit f1320b09 authored by Hans de Goede's avatar Hans de Goede Committed by Jonathan Cameron
Browse files

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: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 9ece370b

drivers/iio/accel/bma180.c

+23 −1
Original line number Diff line number Diff line
@@ -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 },

	{ }

};

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