^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * ADLX345/346 Three-Axis Digital Accelerometers (I2C Interface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Enter bugs at http://blackfin.uclinux.org/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 2009 Michael Hennerich, Analog Devices Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/input.h> /* BUS_I2C */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/pm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "adxl34x.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static int adxl34x_smbus_read(struct device *dev, unsigned char reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) return i2c_smbus_read_byte_data(client, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static int adxl34x_smbus_write(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) unsigned char reg, unsigned char val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) return i2c_smbus_write_byte_data(client, reg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static int adxl34x_smbus_read_block(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) unsigned char reg, int count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) void *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) return i2c_smbus_read_i2c_block_data(client, reg, count, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static int adxl34x_i2c_read_block(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) unsigned char reg, int count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) void *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) ret = i2c_master_send(client, ®, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) ret = i2c_master_recv(client, buf, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (ret != count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static const struct adxl34x_bus_ops adxl34x_smbus_bops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) .bustype = BUS_I2C,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) .write = adxl34x_smbus_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) .read = adxl34x_smbus_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) .read_block = adxl34x_smbus_read_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static const struct adxl34x_bus_ops adxl34x_i2c_bops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) .bustype = BUS_I2C,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) .write = adxl34x_smbus_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) .read = adxl34x_smbus_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) .read_block = adxl34x_i2c_read_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) static int adxl34x_i2c_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct adxl34x *ac;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) error = i2c_check_functionality(client->adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) I2C_FUNC_SMBUS_BYTE_DATA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (!error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) ac = adxl34x_probe(&client->dev, client->irq, false,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) i2c_check_functionality(client->adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) I2C_FUNC_SMBUS_READ_I2C_BLOCK) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) &adxl34x_smbus_bops : &adxl34x_i2c_bops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (IS_ERR(ac))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return PTR_ERR(ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) i2c_set_clientdata(client, ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static int adxl34x_i2c_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) struct adxl34x *ac = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return adxl34x_remove(ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static int __maybe_unused adxl34x_i2c_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct adxl34x *ac = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) adxl34x_suspend(ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static int __maybe_unused adxl34x_i2c_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct adxl34x *ac = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) adxl34x_resume(ac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static SIMPLE_DEV_PM_OPS(adxl34x_i2c_pm, adxl34x_i2c_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) adxl34x_i2c_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static const struct i2c_device_id adxl34x_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) { "adxl34x", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) MODULE_DEVICE_TABLE(i2c, adxl34x_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static const struct of_device_id adxl34x_of_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * The ADXL346 is backward-compatible with the ADXL345. Differences are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * handled by runtime detection of the device model, there's thus no
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * need for listing the "adi,adxl346" compatible value explicitly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) { .compatible = "adi,adxl345", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * Deprecated, DT nodes should use one or more of the device-specific
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * compatible values "adi,adxl345" and "adi,adxl346".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) { .compatible = "adi,adxl34x", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) MODULE_DEVICE_TABLE(of, adxl34x_of_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static struct i2c_driver adxl34x_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) .name = "adxl34x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) .pm = &adxl34x_i2c_pm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) .of_match_table = adxl34x_of_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) .probe = adxl34x_i2c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .remove = adxl34x_i2c_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) .id_table = adxl34x_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) module_i2c_driver(adxl34x_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) MODULE_DESCRIPTION("ADXL345/346 Three-Axis Digital Accelerometer I2C Bus Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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