1 // SPDX-License-Identifier: GPL-2.0-only
3  * IIO driver for the MiraMEMS DA280 3-axis accelerometer and
4  * IIO driver for the MiraMEMS DA226 2-axis accelerometer
29  * a value of + or -4096 corresponds to + or - 1G
51 	struct i2c_client *client;  member
54 static int da280_enable(struct i2c_client *client, bool enable)  in da280_enable()  argument
58 	return i2c_smbus_write_byte_data(client, DA280_REG_MODE_BW, data);  in da280_enable()
70 		ret = i2c_smbus_read_word_data(data->client, chan->address);  in da280_read_raw()
84 		return -EINVAL;  in da280_read_raw()
94 	const struct acpi_device_id *id;  in da280_match_acpi_device()  local
96 	id = acpi_match_device(dev->driver->acpi_match_table, dev);  in da280_match_acpi_device()
97 	if (!id)  in da280_match_acpi_device()
98 		return -EINVAL;  in da280_match_acpi_device()
100 	return (enum da280_chipset) id->driver_data;  in da280_match_acpi_device()
103 static int da280_probe(struct i2c_client *client,  in da280_probe()  argument
104 			const struct i2c_device_id *id)  in da280_probe()  argument
111 	ret = i2c_smbus_read_byte_data(client, DA280_REG_CHIP_ID);  in da280_probe()
113 		return (ret < 0) ? ret : -ENODEV;  in da280_probe()
115 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));  in da280_probe()
117 		return -ENOMEM;  in da280_probe()
120 	data->client = client;  in da280_probe()
121 	i2c_set_clientdata(client, indio_dev);  in da280_probe()
123 	indio_dev->info = &da280_info;  in da280_probe()
124 	indio_dev->modes = INDIO_DIRECT_MODE;  in da280_probe()
125 	indio_dev->channels = da280_channels;  in da280_probe()
127 	if (ACPI_HANDLE(&client->dev)) {  in da280_probe()
128 		chip = da280_match_acpi_device(&client->dev);  in da280_probe()
130 		chip = id->driver_data;  in da280_probe()
134 		indio_dev->name = "da226";  in da280_probe()
135 		indio_dev->num_channels = 2;  in da280_probe()
137 		indio_dev->name = "da280";  in da280_probe()
138 		indio_dev->num_channels = 3;  in da280_probe()
141 	ret = da280_enable(client, true);  in da280_probe()
147 		dev_err(&client->dev, "device_register failed\n");  in da280_probe()
148 		da280_enable(client, false);  in da280_probe()
154 static int da280_remove(struct i2c_client *client)  in da280_remove()  argument
156 	struct iio_dev *indio_dev = i2c_get_clientdata(client);  in da280_remove()
160 	return da280_enable(client, false);  in da280_remove()
204 MODULE_DESCRIPTION("MiraMEMS DA280 3-Axis Accelerometer driver");