1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Copyright (C) 2016 - Marcin Malagowski <mrc@bourne.st>
18 #define ABP060MG_NUM_COUNTS   (ABP060MG_MAX_COUNTS - ABP060MG_MIN_COUNTS)
52 	[ABP006KD] = { .min =   -6000, .max =     6000 },
53 	[ABP010KD] = { .min =  -10000, .max =    10000 },
54 	[ABP016KD] = { .min =  -16000, .max =    16000 },
55 	[ABP025KD] = { .min =  -25000, .max =    25000 },
56 	[ABP040KD] = { .min =  -40000, .max =    40000 },
57 	[ABP060KD] = { .min =  -60000, .max =    60000 },
58 	[ABP100KD] = { .min = -100000, .max =   100000 },
59 	[ABP160KD] = { .min = -160000, .max =   160000 },
60 	[ABP250KD] = { .min = -250000, .max =   250000 },
61 	[ABP400KD] = { .min = -400000, .max =   400000 },
70 	[ABP001PD] = { .min =   -6895, .max =     6895 },
71 	[ABP005PD] = { .min =  -34474, .max =    34474 },
72 	[ABP015PD] = { .min = -103421, .max =   103421 },
73 	[ABP030PD] = { .min = -206843, .max =   206843 },
74 	[ABP060PD] = { .min = -413686, .max =   413686 },
82 	 * bus-dependent MEASURE_REQUEST length.
87 	/* model-dependent values (calculated on probe) */
102 	struct i2c_client *client = state->client;  in abp060mg_get_measurement()
108 	ret = i2c_master_send(client, (u8 *)&buf, state->mreq_len);  in abp060mg_get_measurement()
120 		return -EIO;  in abp060mg_get_measurement()
123 		return -EIO;  in abp060mg_get_measurement()
137 	mutex_lock(&state->lock);  in abp060mg_read_raw()
144 		*val = state->offset;  in abp060mg_read_raw()
148 		*val = state->scale;  in abp060mg_read_raw()
153 		ret = -EINVAL;  in abp060mg_read_raw()
157 	mutex_unlock(&state->lock);  in abp060mg_read_raw()
170 	state->scale = cfg->max - cfg->min;  in abp060mg_init_device()
171 	state->offset = -ABP060MG_MIN_COUNTS;  in abp060mg_init_device()
173 	if (cfg->min < 0) /* differential */  in abp060mg_init_device()
174 		state->offset -= ABP060MG_NUM_COUNTS >> 1;  in abp060mg_init_device()
182 	unsigned long cfg_id = id->driver_data;  in abp060mg_probe()
184 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*state));  in abp060mg_probe()
186 		return -ENOMEM;  in abp060mg_probe()
190 	state->client = client;  in abp060mg_probe()
192 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_QUICK))  in abp060mg_probe()
193 		state->mreq_len = 1;  in abp060mg_probe()
197 	indio_dev->name = dev_name(&client->dev);  in abp060mg_probe()
198 	indio_dev->modes = INDIO_DIRECT_MODE;  in abp060mg_probe()
199 	indio_dev->info = &abp060mg_info;  in abp060mg_probe()
201 	indio_dev->channels = abp060mg_channels;  in abp060mg_probe()
202 	indio_dev->num_channels = ARRAY_SIZE(abp060mg_channels);  in abp060mg_probe()
204 	mutex_init(&state->lock);  in abp060mg_probe()
206 	return devm_iio_device_register(&client->dev, indio_dev);  in abp060mg_probe()