linux-imx
Public
Source
committed 309c675e62d96
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return sprintf(buf, "%d\n", pcf8591_read_channel(dev, channel));\97
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} \98
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static DEVICE_ATTR(in##channel##_input, S_IRUGO, \99
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show_in##channel##_input, NULL);100
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show_in_channel(0);102
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show_in_channel(1);103
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show_in_channel(2);104
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show_in_channel(3);105
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static ssize_t show_out0_ouput(struct device *dev,107
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struct device_attribute *attr, char *buf)106
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static ssize_t out0_output_show(struct device *dev,107
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struct device_attribute *attr, char *buf)108
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{109
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struct pcf8591_data *data = i2c_get_clientdata(to_i2c_client(dev));110
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return sprintf(buf, "%d\n", data->aout * 10);111
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}112
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static ssize_t set_out0_output(struct device *dev,114
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struct device_attribute *attr,115
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const char *buf, size_t count)113
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static ssize_t out0_output_store(struct device *dev,114
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struct device_attribute *attr,115
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const char *buf, size_t count)116
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{117
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unsigned long val;118
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struct i2c_client *client = to_i2c_client(dev);119
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struct pcf8591_data *data = i2c_get_clientdata(client);120
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int err;121
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err = kstrtoul(buf, 10, &val);123
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if (err)124
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return err;125
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val /= 10;127
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if (val > 255)128
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return -EINVAL;129
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data->aout = val;131
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i2c_smbus_write_byte_data(client, data->control, data->aout);132
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return count;133
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}134
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static DEVICE_ATTR(out0_output, S_IWUSR | S_IRUGO,136
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show_out0_ouput, set_out0_output);135
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static DEVICE_ATTR_RW(out0_output);137
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static ssize_t show_out0_enable(struct device *dev,137
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static ssize_t out0_enable_show(struct device *dev,139
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struct device_attribute *attr, char *buf)140
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{141
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struct pcf8591_data *data = i2c_get_clientdata(to_i2c_client(dev));142
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return sprintf(buf, "%u\n", !(!(data->control & PCF8591_CONTROL_AOEF)));143
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}144
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static ssize_t set_out0_enable(struct device *dev,146
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struct device_attribute *attr,147
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const char *buf, size_t count)144
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static ssize_t out0_enable_store(struct device *dev,145
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struct device_attribute *attr,146
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const char *buf, size_t count)148
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{149
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struct i2c_client *client = to_i2c_client(dev);150
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struct pcf8591_data *data = i2c_get_clientdata(client);151
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unsigned long val;152
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int err;153
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err = kstrtoul(buf, 10, &val);155
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if (err)156
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return err;157
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mutex_lock(&data->update_lock);159
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if (val)160
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data->control |= PCF8591_CONTROL_AOEF;161
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else162
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data->control &= ~PCF8591_CONTROL_AOEF;163
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i2c_smbus_write_byte(client, data->control);164
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mutex_unlock(&data->update_lock);165
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return count;166
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}167
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static DEVICE_ATTR(out0_enable, S_IWUSR | S_IRUGO,169
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show_out0_enable, set_out0_enable);167
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static DEVICE_ATTR_RW(out0_enable);170
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static struct attribute *pcf8591_attributes[] = {172
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&dev_attr_out0_enable.attr,173
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&dev_attr_out0_output.attr,174
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&dev_attr_in0_input.attr,175
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&dev_attr_in1_input.attr,176
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NULL177
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};178
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static const struct attribute_group pcf8591_attr_group = {