1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * STMicroelectronics pressures driver 4 * 5 * Copyright 2013 STMicroelectronics Inc. 6 * 7 * Denis Ciocca <denis.ciocca@st.com> 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/slab.h> 13 #include <linux/i2c.h> 14 #include <linux/iio/iio.h> 15 16 #include <linux/iio/common/st_sensors.h> 17 #include <linux/iio/common/st_sensors_i2c.h> 18 #include "st_pressure.h" 19 20 static const struct of_device_id st_press_of_match[] = { 21 { 22 .compatible = "st,lps001wp-press", 23 .data = LPS001WP_PRESS_DEV_NAME, 24 }, 25 { 26 .compatible = "st,lps25h-press", 27 .data = LPS25H_PRESS_DEV_NAME, 28 }, 29 { 30 .compatible = "st,lps331ap-press", 31 .data = LPS331AP_PRESS_DEV_NAME, 32 }, 33 { 34 .compatible = "st,lps22hb-press", 35 .data = LPS22HB_PRESS_DEV_NAME, 36 }, 37 { 38 .compatible = "st,lps33hw", 39 .data = LPS33HW_PRESS_DEV_NAME, 40 }, 41 { 42 .compatible = "st,lps35hw", 43 .data = LPS35HW_PRESS_DEV_NAME, 44 }, 45 { 46 .compatible = "st,lps22hh", 47 .data = LPS22HH_PRESS_DEV_NAME, 48 }, 49 {}, 50 }; 51 MODULE_DEVICE_TABLE(of, st_press_of_match); 52 53 #ifdef CONFIG_ACPI 54 static const struct acpi_device_id st_press_acpi_match[] = { 55 {"SNO9210", LPS22HB}, 56 { }, 57 }; 58 MODULE_DEVICE_TABLE(acpi, st_press_acpi_match); 59 #endif 60 61 static const struct i2c_device_id st_press_id_table[] = { 62 { LPS001WP_PRESS_DEV_NAME, LPS001WP }, 63 { LPS25H_PRESS_DEV_NAME, LPS25H }, 64 { LPS331AP_PRESS_DEV_NAME, LPS331AP }, 65 { LPS22HB_PRESS_DEV_NAME, LPS22HB }, 66 { LPS33HW_PRESS_DEV_NAME, LPS33HW }, 67 { LPS35HW_PRESS_DEV_NAME, LPS35HW }, 68 { LPS22HH_PRESS_DEV_NAME, LPS22HH }, 69 {}, 70 }; 71 MODULE_DEVICE_TABLE(i2c, st_press_id_table); 72 73 static int st_press_i2c_probe(struct i2c_client *client, 74 const struct i2c_device_id *id) 75 { 76 const struct st_sensor_settings *settings; 77 struct st_sensor_data *press_data; 78 struct iio_dev *indio_dev; 79 int ret; 80 81 st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name)); 82 83 settings = st_press_get_settings(client->name); 84 if (!settings) { 85 dev_err(&client->dev, "device name %s not recognized.\n", 86 client->name); 87 return -ENODEV; 88 } 89 90 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*press_data)); 91 if (!indio_dev) 92 return -ENOMEM; 93 94 press_data = iio_priv(indio_dev); 95 press_data->sensor_settings = (struct st_sensor_settings *)settings; 96 97 ret = st_sensors_i2c_configure(indio_dev, client); 98 if (ret < 0) 99 return ret; 100 101 ret = st_sensors_power_enable(indio_dev); 102 if (ret) 103 return ret; 104 105 ret = st_press_common_probe(indio_dev); 106 if (ret < 0) 107 goto st_press_power_off; 108 109 return 0; 110 111 st_press_power_off: 112 st_sensors_power_disable(indio_dev); 113 114 return ret; 115 } 116 117 static int st_press_i2c_remove(struct i2c_client *client) 118 { 119 struct iio_dev *indio_dev = i2c_get_clientdata(client); 120 121 st_sensors_power_disable(indio_dev); 122 123 st_press_common_remove(indio_dev); 124 125 return 0; 126 } 127 128 static struct i2c_driver st_press_driver = { 129 .driver = { 130 .name = "st-press-i2c", 131 .of_match_table = st_press_of_match, 132 .acpi_match_table = ACPI_PTR(st_press_acpi_match), 133 }, 134 .probe = st_press_i2c_probe, 135 .remove = st_press_i2c_remove, 136 .id_table = st_press_id_table, 137 }; 138 module_i2c_driver(st_press_driver); 139 140 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); 141 MODULE_DESCRIPTION("STMicroelectronics pressures i2c driver"); 142 MODULE_LICENSE("GPL v2"); 143