tmp006.c (3bc4f3993b93dbf1f6402e2034a2e20eb07db807) tmp006.c (da1690e6ca03ae72ff89727d8dfd40f40a365136)
1/*
2 * tmp006.c - Support for TI TMP006 IR thermopile sensor
3 *
4 * Copyright (c) 2013 Peter Meerwald <pmeerw@pmeerw.net>
5 *
6 * This file is subject to the terms and conditions of version 2 of
7 * the GNU General Public License. See the file COPYING in the main
8 * directory of this archive for more details.

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65 }
66
67 if (tries < 0)
68 return -EIO;
69
70 return i2c_smbus_read_word_swapped(data->client, reg);
71}
72
1/*
2 * tmp006.c - Support for TI TMP006 IR thermopile sensor
3 *
4 * Copyright (c) 2013 Peter Meerwald <pmeerw@pmeerw.net>
5 *
6 * This file is subject to the terms and conditions of version 2 of
7 * the GNU General Public License. See the file COPYING in the main
8 * directory of this archive for more details.

--- 56 unchanged lines hidden (view full) ---

65 }
66
67 if (tries < 0)
68 return -EIO;
69
70 return i2c_smbus_read_word_swapped(data->client, reg);
71}
72
73static const int tmp006_freqs[5][2] = { {4, 0}, {2, 0}, {1, 0},
74 {0, 500000}, {0, 250000} };
75
73static int tmp006_read_raw(struct iio_dev *indio_dev,
74 struct iio_chan_spec const *channel, int *val,
75 int *val2, long mask)
76{
77 struct tmp006_data *data = iio_priv(indio_dev);
78 s32 ret;
76static int tmp006_read_raw(struct iio_dev *indio_dev,
77 struct iio_chan_spec const *channel, int *val,
78 int *val2, long mask)
79{
80 struct tmp006_data *data = iio_priv(indio_dev);
81 s32 ret;
82 int cr;
79
80 switch (mask) {
81 case IIO_CHAN_INFO_RAW:
82 if (channel->type == IIO_VOLTAGE) {
83 /* LSB is 156.25 nV */
84 ret = tmp006_read_measurement(data, TMP006_VOBJECT);
85 if (ret < 0)
86 return ret;

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101 *val2 = 156250;
102 } else if (channel->type == IIO_TEMP) {
103 *val = 31;
104 *val2 = 250000;
105 } else {
106 break;
107 }
108 return IIO_VAL_INT_PLUS_MICRO;
83
84 switch (mask) {
85 case IIO_CHAN_INFO_RAW:
86 if (channel->type == IIO_VOLTAGE) {
87 /* LSB is 156.25 nV */
88 ret = tmp006_read_measurement(data, TMP006_VOBJECT);
89 if (ret < 0)
90 return ret;

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105 *val2 = 156250;
106 } else if (channel->type == IIO_TEMP) {
107 *val = 31;
108 *val2 = 250000;
109 } else {
110 break;
111 }
112 return IIO_VAL_INT_PLUS_MICRO;
113 case IIO_CHAN_INFO_SAMP_FREQ:
114 cr = (data->config & TMP006_CONFIG_CR_MASK)
115 >> TMP006_CONFIG_CR_SHIFT;
116 *val = tmp006_freqs[cr][0];
117 *val2 = tmp006_freqs[cr][1];
118 return IIO_VAL_INT_PLUS_MICRO;
109 default:
110 break;
111 }
112
113 return -EINVAL;
114}
115
119 default:
120 break;
121 }
122
123 return -EINVAL;
124}
125
116static const char * const tmp006_freqs[] = { "4", "2", "1", "0.5", "0.25" };
117
118static ssize_t tmp006_show_freq(struct device *dev,
119 struct device_attribute *attr, char *buf)
126static int tmp006_write_raw(struct iio_dev *indio_dev,
127 struct iio_chan_spec const *chan,
128 int val,
129 int val2,
130 long mask)
120{
131{
121 struct tmp006_data *data = iio_priv(dev_to_iio_dev(dev));
122 int cr = (data->config & TMP006_CONFIG_CR_MASK)
123 >> TMP006_CONFIG_CR_SHIFT;
124 return sprintf(buf, "%s\n", tmp006_freqs[cr]);
125}
126
127static ssize_t tmp006_store_freq(struct device *dev,
128 struct device_attribute *attr,
129 const char *buf, size_t len)
130{
131 struct iio_dev *indio_dev = dev_to_iio_dev(dev);
132 struct tmp006_data *data = iio_priv(indio_dev);
133 int i;
132 struct tmp006_data *data = iio_priv(indio_dev);
133 int i;
134 bool found = false;
135
136 for (i = 0; i < ARRAY_SIZE(tmp006_freqs); i++)
134
135 for (i = 0; i < ARRAY_SIZE(tmp006_freqs); i++)
137 if (sysfs_streq(buf, tmp006_freqs[i])) {
138 found = true;
139 break;
140 }
141 if (!found)
142 return -EINVAL;
136 if ((val == tmp006_freqs[i][0]) &&
137 (val2 == tmp006_freqs[i][1])) {
138 data->config &= ~TMP006_CONFIG_CR_MASK;
139 data->config |= i << TMP006_CONFIG_CR_SHIFT;
143
140
144 data->config &= ~TMP006_CONFIG_CR_MASK;
145 data->config |= i << TMP006_CONFIG_CR_SHIFT;
141 return i2c_smbus_write_word_swapped(data->client,
142 TMP006_CONFIG,
143 data->config);
146
144
147 return i2c_smbus_write_word_swapped(data->client, TMP006_CONFIG,
148 data->config);
145 }
146 return -EINVAL;
149}
150
147}
148
151static IIO_DEV_ATTR_SAMP_FREQ(S_IRUGO | S_IWUSR,
152 tmp006_show_freq, tmp006_store_freq);
153
154static IIO_CONST_ATTR(sampling_frequency_available, "4 2 1 0.5 0.25");
155
156static struct attribute *tmp006_attributes[] = {
149static IIO_CONST_ATTR(sampling_frequency_available, "4 2 1 0.5 0.25");
150
151static struct attribute *tmp006_attributes[] = {
157 &iio_dev_attr_sampling_frequency.dev_attr.attr,
158 &iio_const_attr_sampling_frequency_available.dev_attr.attr,
159 NULL
160};
161
162static const struct attribute_group tmp006_attribute_group = {
163 .attrs = tmp006_attributes,
164};
165
166static const struct iio_chan_spec tmp006_channels[] = {
167 {
168 .type = IIO_VOLTAGE,
169 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
170 BIT(IIO_CHAN_INFO_SCALE),
152 &iio_const_attr_sampling_frequency_available.dev_attr.attr,
153 NULL
154};
155
156static const struct attribute_group tmp006_attribute_group = {
157 .attrs = tmp006_attributes,
158};
159
160static const struct iio_chan_spec tmp006_channels[] = {
161 {
162 .type = IIO_VOLTAGE,
163 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
164 BIT(IIO_CHAN_INFO_SCALE),
165 .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
171 },
172 {
173 .type = IIO_TEMP,
174 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
175 BIT(IIO_CHAN_INFO_SCALE),
166 },
167 {
168 .type = IIO_TEMP,
169 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
170 BIT(IIO_CHAN_INFO_SCALE),
171 .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
176 }
177};
178
179static const struct iio_info tmp006_info = {
180 .read_raw = tmp006_read_raw,
172 }
173};
174
175static const struct iio_info tmp006_info = {
176 .read_raw = tmp006_read_raw,
177 .write_raw = tmp006_write_raw,
181 .attrs = &tmp006_attribute_group,
182 .driver_module = THIS_MODULE,
183};
184
185static bool tmp006_check_identification(struct i2c_client *client)
186{
187 int mid, did;
188

--- 103 unchanged lines hidden --- 		178 .attrs = &tmp006_attribute_group,
179 .driver_module = THIS_MODULE,
180};
181
182static bool tmp006_check_identification(struct i2c_client *client)
183{
184 int mid, did;
185

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