1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * STMicroelectronics pressures driver
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 2013 STMicroelectronics Inc.
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Denis Ciocca <denis.ciocca@st.com>
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/kernel.h>
11*4882a593Smuzhiyun #include <linux/module.h>
12*4882a593Smuzhiyun #include <linux/slab.h>
13*4882a593Smuzhiyun #include <linux/spi/spi.h>
14*4882a593Smuzhiyun #include <linux/iio/iio.h>
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #include <linux/iio/common/st_sensors.h>
17*4882a593Smuzhiyun #include <linux/iio/common/st_sensors_spi.h>
18*4882a593Smuzhiyun #include "st_pressure.h"
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun /*
21*4882a593Smuzhiyun * For new single-chip sensors use <device_name> as compatible string.
22*4882a593Smuzhiyun * For old single-chip devices keep <device_name>-press to maintain
23*4882a593Smuzhiyun * compatibility
24*4882a593Smuzhiyun */
25*4882a593Smuzhiyun static const struct of_device_id st_press_of_match[] = {
26*4882a593Smuzhiyun {
27*4882a593Smuzhiyun .compatible = "st,lps001wp-press",
28*4882a593Smuzhiyun .data = LPS001WP_PRESS_DEV_NAME,
29*4882a593Smuzhiyun },
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun .compatible = "st,lps25h-press",
32*4882a593Smuzhiyun .data = LPS25H_PRESS_DEV_NAME,
33*4882a593Smuzhiyun },
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun .compatible = "st,lps331ap-press",
36*4882a593Smuzhiyun .data = LPS331AP_PRESS_DEV_NAME,
37*4882a593Smuzhiyun },
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun .compatible = "st,lps22hb-press",
40*4882a593Smuzhiyun .data = LPS22HB_PRESS_DEV_NAME,
41*4882a593Smuzhiyun },
42*4882a593Smuzhiyun {
43*4882a593Smuzhiyun .compatible = "st,lps33hw",
44*4882a593Smuzhiyun .data = LPS33HW_PRESS_DEV_NAME,
45*4882a593Smuzhiyun },
46*4882a593Smuzhiyun {
47*4882a593Smuzhiyun .compatible = "st,lps35hw",
48*4882a593Smuzhiyun .data = LPS35HW_PRESS_DEV_NAME,
49*4882a593Smuzhiyun },
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun .compatible = "st,lps22hh",
52*4882a593Smuzhiyun .data = LPS22HH_PRESS_DEV_NAME,
53*4882a593Smuzhiyun },
54*4882a593Smuzhiyun {},
55*4882a593Smuzhiyun };
56*4882a593Smuzhiyun MODULE_DEVICE_TABLE(of, st_press_of_match);
57*4882a593Smuzhiyun
st_press_spi_probe(struct spi_device * spi)58*4882a593Smuzhiyun static int st_press_spi_probe(struct spi_device *spi)
59*4882a593Smuzhiyun {
60*4882a593Smuzhiyun const struct st_sensor_settings *settings;
61*4882a593Smuzhiyun struct st_sensor_data *press_data;
62*4882a593Smuzhiyun struct iio_dev *indio_dev;
63*4882a593Smuzhiyun int err;
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun settings = st_press_get_settings(spi->modalias);
68*4882a593Smuzhiyun if (!settings) {
69*4882a593Smuzhiyun dev_err(&spi->dev, "device name %s not recognized.\n",
70*4882a593Smuzhiyun spi->modalias);
71*4882a593Smuzhiyun return -ENODEV;
72*4882a593Smuzhiyun }
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data));
75*4882a593Smuzhiyun if (!indio_dev)
76*4882a593Smuzhiyun return -ENOMEM;
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun press_data = iio_priv(indio_dev);
79*4882a593Smuzhiyun press_data->sensor_settings = (struct st_sensor_settings *)settings;
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun err = st_sensors_spi_configure(indio_dev, spi);
82*4882a593Smuzhiyun if (err < 0)
83*4882a593Smuzhiyun return err;
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun err = st_sensors_power_enable(indio_dev);
86*4882a593Smuzhiyun if (err)
87*4882a593Smuzhiyun return err;
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun err = st_press_common_probe(indio_dev);
90*4882a593Smuzhiyun if (err < 0)
91*4882a593Smuzhiyun goto st_press_power_off;
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun return 0;
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun st_press_power_off:
96*4882a593Smuzhiyun st_sensors_power_disable(indio_dev);
97*4882a593Smuzhiyun
98*4882a593Smuzhiyun return err;
99*4882a593Smuzhiyun }
100*4882a593Smuzhiyun
st_press_spi_remove(struct spi_device * spi)101*4882a593Smuzhiyun static int st_press_spi_remove(struct spi_device *spi)
102*4882a593Smuzhiyun {
103*4882a593Smuzhiyun struct iio_dev *indio_dev = spi_get_drvdata(spi);
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun st_press_common_remove(indio_dev);
106*4882a593Smuzhiyun
107*4882a593Smuzhiyun st_sensors_power_disable(indio_dev);
108*4882a593Smuzhiyun
109*4882a593Smuzhiyun return 0;
110*4882a593Smuzhiyun }
111*4882a593Smuzhiyun
112*4882a593Smuzhiyun static const struct spi_device_id st_press_id_table[] = {
113*4882a593Smuzhiyun { LPS001WP_PRESS_DEV_NAME },
114*4882a593Smuzhiyun { LPS25H_PRESS_DEV_NAME },
115*4882a593Smuzhiyun { LPS331AP_PRESS_DEV_NAME },
116*4882a593Smuzhiyun { LPS22HB_PRESS_DEV_NAME },
117*4882a593Smuzhiyun { LPS33HW_PRESS_DEV_NAME },
118*4882a593Smuzhiyun { LPS35HW_PRESS_DEV_NAME },
119*4882a593Smuzhiyun { LPS22HH_PRESS_DEV_NAME },
120*4882a593Smuzhiyun {},
121*4882a593Smuzhiyun };
122*4882a593Smuzhiyun MODULE_DEVICE_TABLE(spi, st_press_id_table);
123*4882a593Smuzhiyun
124*4882a593Smuzhiyun static struct spi_driver st_press_driver = {
125*4882a593Smuzhiyun .driver = {
126*4882a593Smuzhiyun .name = "st-press-spi",
127*4882a593Smuzhiyun .of_match_table = st_press_of_match,
128*4882a593Smuzhiyun },
129*4882a593Smuzhiyun .probe = st_press_spi_probe,
130*4882a593Smuzhiyun .remove = st_press_spi_remove,
131*4882a593Smuzhiyun .id_table = st_press_id_table,
132*4882a593Smuzhiyun };
133*4882a593Smuzhiyun module_spi_driver(st_press_driver);
134*4882a593Smuzhiyun
135*4882a593Smuzhiyun MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
136*4882a593Smuzhiyun MODULE_DESCRIPTION("STMicroelectronics pressures spi driver");
137*4882a593Smuzhiyun MODULE_LICENSE("GPL v2");
138