diff options
Diffstat (limited to 'drivers/i2c/chips/pca9539.c')
| -rw-r--r-- | drivers/i2c/chips/pca9539.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/drivers/i2c/chips/pca9539.c b/drivers/i2c/chips/pca9539.c deleted file mode 100644 index 270de4e56a81..000000000000 --- a/drivers/i2c/chips/pca9539.c +++ /dev/null | |||
| @@ -1,152 +0,0 @@ | |||
| 1 | /* | ||
| 2 | pca9539.c - 16-bit I/O port with interrupt and reset | ||
| 3 | |||
| 4 | Copyright (C) 2005 Ben Gardner <bgardner@wabtec.com> | ||
| 5 | |||
| 6 | This program is free software; you can redistribute it and/or modify | ||
| 7 | it under the terms of the GNU General Public License as published by | ||
| 8 | the Free Software Foundation; version 2 of the License. | ||
| 9 | */ | ||
| 10 | |||
| 11 | #include <linux/module.h> | ||
| 12 | #include <linux/init.h> | ||
| 13 | #include <linux/slab.h> | ||
| 14 | #include <linux/i2c.h> | ||
| 15 | #include <linux/hwmon-sysfs.h> | ||
| 16 | |||
| 17 | /* Addresses to scan: none, device is not autodetected */ | ||
| 18 | static const unsigned short normal_i2c[] = { I2C_CLIENT_END }; | ||
| 19 | |||
| 20 | /* Insmod parameters */ | ||
| 21 | I2C_CLIENT_INSMOD_1(pca9539); | ||
| 22 | |||
| 23 | enum pca9539_cmd | ||
| 24 | { | ||
| 25 | PCA9539_INPUT_0 = 0, | ||
| 26 | PCA9539_INPUT_1 = 1, | ||
| 27 | PCA9539_OUTPUT_0 = 2, | ||
| 28 | PCA9539_OUTPUT_1 = 3, | ||
| 29 | PCA9539_INVERT_0 = 4, | ||
| 30 | PCA9539_INVERT_1 = 5, | ||
| 31 | PCA9539_DIRECTION_0 = 6, | ||
| 32 | PCA9539_DIRECTION_1 = 7, | ||
| 33 | }; | ||
| 34 | |||
| 35 | /* following are the sysfs callback functions */ | ||
| 36 | static ssize_t pca9539_show(struct device *dev, struct device_attribute *attr, | ||
| 37 | char *buf) | ||
| 38 | { | ||
| 39 | struct sensor_device_attribute *psa = to_sensor_dev_attr(attr); | ||
| 40 | struct i2c_client *client = to_i2c_client(dev); | ||
| 41 | return sprintf(buf, "%d\n", i2c_smbus_read_byte_data(client, | ||
| 42 | psa->index)); | ||
| 43 | } | ||
| 44 | |||
| 45 | static ssize_t pca9539_store(struct device *dev, struct device_attribute *attr, | ||
| 46 | const char *buf, size_t count) | ||
| 47 | { | ||
| 48 | struct sensor_device_attribute *psa = to_sensor_dev_attr(attr); | ||
| 49 | struct i2c_client *client = to_i2c_client(dev); | ||
| 50 | unsigned long val = simple_strtoul(buf, NULL, 0); | ||
| 51 | if (val > 0xff) | ||
| 52 | return -EINVAL; | ||
| 53 | i2c_smbus_write_byte_data(client, psa->index, val); | ||
| 54 | return count; | ||
| 55 | } | ||
| 56 | |||
| 57 | /* Define the device attributes */ | ||
| 58 | |||
| 59 | #define PCA9539_ENTRY_RO(name, cmd_idx) \ | ||
| 60 | static SENSOR_DEVICE_ATTR(name, S_IRUGO, pca9539_show, NULL, cmd_idx) | ||
| 61 | |||
| 62 | #define PCA9539_ENTRY_RW(name, cmd_idx) \ | ||
| 63 | static SENSOR_DEVICE_ATTR(name, S_IRUGO | S_IWUSR, pca9539_show, \ | ||
| 64 | pca9539_store, cmd_idx) | ||
| 65 | |||
| 66 | PCA9539_ENTRY_RO(input0, PCA9539_INPUT_0); | ||
| 67 | PCA9539_ENTRY_RO(input1, PCA9539_INPUT_1); | ||
| 68 | PCA9539_ENTRY_RW(output0, PCA9539_OUTPUT_0); | ||
| 69 | PCA9539_ENTRY_RW(output1, PCA9539_OUTPUT_1); | ||
| 70 | PCA9539_ENTRY_RW(invert0, PCA9539_INVERT_0); | ||
| 71 | PCA9539_ENTRY_RW(invert1, PCA9539_INVERT_1); | ||
| 72 | PCA9539_ENTRY_RW(direction0, PCA9539_DIRECTION_0); | ||
| 73 | PCA9539_ENTRY_RW(direction1, PCA9539_DIRECTION_1); | ||
| 74 | |||
| 75 | static struct attribute *pca9539_attributes[] = { | ||
| 76 | &sensor_dev_attr_input0.dev_attr.attr, | ||
| 77 | &sensor_dev_attr_input1.dev_attr.attr, | ||
| 78 | &sensor_dev_attr_output0.dev_attr.attr, | ||
| 79 | &sensor_dev_attr_output1.dev_attr.attr, | ||
| 80 | &sensor_dev_attr_invert0.dev_attr.attr, | ||
| 81 | &sensor_dev_attr_invert1.dev_attr.attr, | ||
| 82 | &sensor_dev_attr_direction0.dev_attr.attr, | ||
| 83 | &sensor_dev_attr_direction1.dev_attr.attr, | ||
| 84 | NULL | ||
| 85 | }; | ||
| 86 | |||
| 87 | static struct attribute_group pca9539_defattr_group = { | ||
| 88 | .attrs = pca9539_attributes, | ||
| 89 | }; | ||
| 90 | |||
| 91 | /* Return 0 if detection is successful, -ENODEV otherwise */ | ||
| 92 | static int pca9539_detect(struct i2c_client *client, int kind, | ||
| 93 | struct i2c_board_info *info) | ||
| 94 | { | ||
| 95 | struct i2c_adapter *adapter = client->adapter; | ||
| 96 | |||
| 97 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | ||
| 98 | return -ENODEV; | ||
| 99 | |||
| 100 | strlcpy(info->type, "pca9539", I2C_NAME_SIZE); | ||
| 101 | |||
| 102 | return 0; | ||
| 103 | } | ||
| 104 | |||
| 105 | static int pca9539_probe(struct i2c_client *client, | ||
| 106 | const struct i2c_device_id *id) | ||
| 107 | { | ||
| 108 | /* Register sysfs hooks */ | ||
| 109 | return sysfs_create_group(&client->dev.kobj, | ||
| 110 | &pca9539_defattr_group); | ||
| 111 | } | ||
| 112 | |||
| 113 | static int pca9539_remove(struct i2c_client *client) | ||
| 114 | { | ||
| 115 | sysfs_remove_group(&client->dev.kobj, &pca9539_defattr_group); | ||
| 116 | return 0; | ||
| 117 | } | ||
| 118 | |||
| 119 | static const struct i2c_device_id pca9539_id[] = { | ||
| 120 | { "pca9539", 0 }, | ||
| 121 | { } | ||
| 122 | }; | ||
| 123 | |||
| 124 | static struct i2c_driver pca9539_driver = { | ||
| 125 | .driver = { | ||
| 126 | .name = "pca9539", | ||
| 127 | }, | ||
| 128 | .probe = pca9539_probe, | ||
| 129 | .remove = pca9539_remove, | ||
| 130 | .id_table = pca9539_id, | ||
| 131 | |||
| 132 | .detect = pca9539_detect, | ||
| 133 | .address_data = &addr_data, | ||
| 134 | }; | ||
| 135 | |||
| 136 | static int __init pca9539_init(void) | ||
| 137 | { | ||
| 138 | return i2c_add_driver(&pca9539_driver); | ||
| 139 | } | ||
| 140 | |||
| 141 | static void __exit pca9539_exit(void) | ||
| 142 | { | ||
| 143 | i2c_del_driver(&pca9539_driver); | ||
| 144 | } | ||
| 145 | |||
| 146 | MODULE_AUTHOR("Ben Gardner <bgardner@wabtec.com>"); | ||
| 147 | MODULE_DESCRIPTION("PCA9539 driver"); | ||
| 148 | MODULE_LICENSE("GPL"); | ||
| 149 | |||
| 150 | module_init(pca9539_init); | ||
| 151 | module_exit(pca9539_exit); | ||
| 152 | |||