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path: root/drivers/hwmon/tmp401.c
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Diffstat (limited to 'drivers/hwmon/tmp401.c')
-rw-r--r--drivers/hwmon/tmp401.c205
1 files changed, 97 insertions, 108 deletions
diff --git a/drivers/hwmon/tmp401.c b/drivers/hwmon/tmp401.c
index d58b40a6613d..ad8d535235c5 100644
--- a/drivers/hwmon/tmp401.c
+++ b/drivers/hwmon/tmp401.c
@@ -92,17 +92,6 @@ static const u8 TMP411_TEMP_HIGHEST_LSB[2] = { 0x33, 0x37 };
92#define TMP411_DEVICE_ID 0x12 92#define TMP411_DEVICE_ID 0x12
93 93
94/* 94/*
95 * Functions declarations
96 */
97
98static int tmp401_probe(struct i2c_client *client,
99 const struct i2c_device_id *id);
100static int tmp401_detect(struct i2c_client *client,
101 struct i2c_board_info *info);
102static int tmp401_remove(struct i2c_client *client);
103static struct tmp401_data *tmp401_update_device(struct device *dev);
104
105/*
106 * Driver data (common to all clients) 95 * Driver data (common to all clients)
107 */ 96 */
108 97
@@ -113,18 +102,6 @@ static const struct i2c_device_id tmp401_id[] = {
113}; 102};
114MODULE_DEVICE_TABLE(i2c, tmp401_id); 103MODULE_DEVICE_TABLE(i2c, tmp401_id);
115 104
116static struct i2c_driver tmp401_driver = {
117 .class = I2C_CLASS_HWMON,
118 .driver = {
119 .name = "tmp401",
120 },
121 .probe = tmp401_probe,
122 .remove = tmp401_remove,
123 .id_table = tmp401_id,
124 .detect = tmp401_detect,
125 .address_list = normal_i2c,
126};
127
128/* 105/*
129 * Client data (each client gets its own) 106 * Client data (each client gets its own)
130 */ 107 */
@@ -194,6 +171,71 @@ static u8 tmp401_crit_temp_to_register(long temp, u8 config)
194 return (temp + 500) / 1000; 171 return (temp + 500) / 1000;
195} 172}
196 173
174static struct tmp401_data *tmp401_update_device_reg16(
175 struct i2c_client *client, struct tmp401_data *data)
176{
177 int i;
178
179 for (i = 0; i < 2; i++) {
180 /*
181 * High byte must be read first immediately followed
182 * by the low byte
183 */
184 data->temp[i] = i2c_smbus_read_byte_data(client,
185 TMP401_TEMP_MSB[i]) << 8;
186 data->temp[i] |= i2c_smbus_read_byte_data(client,
187 TMP401_TEMP_LSB[i]);
188 data->temp_low[i] = i2c_smbus_read_byte_data(client,
189 TMP401_TEMP_LOW_LIMIT_MSB_READ[i]) << 8;
190 data->temp_low[i] |= i2c_smbus_read_byte_data(client,
191 TMP401_TEMP_LOW_LIMIT_LSB[i]);
192 data->temp_high[i] = i2c_smbus_read_byte_data(client,
193 TMP401_TEMP_HIGH_LIMIT_MSB_READ[i]) << 8;
194 data->temp_high[i] |= i2c_smbus_read_byte_data(client,
195 TMP401_TEMP_HIGH_LIMIT_LSB[i]);
196 data->temp_crit[i] = i2c_smbus_read_byte_data(client,
197 TMP401_TEMP_CRIT_LIMIT[i]);
198
199 if (data->kind == tmp411) {
200 data->temp_lowest[i] = i2c_smbus_read_byte_data(client,
201 TMP411_TEMP_LOWEST_MSB[i]) << 8;
202 data->temp_lowest[i] |= i2c_smbus_read_byte_data(
203 client, TMP411_TEMP_LOWEST_LSB[i]);
204
205 data->temp_highest[i] = i2c_smbus_read_byte_data(
206 client, TMP411_TEMP_HIGHEST_MSB[i]) << 8;
207 data->temp_highest[i] |= i2c_smbus_read_byte_data(
208 client, TMP411_TEMP_HIGHEST_LSB[i]);
209 }
210 }
211 return data;
212}
213
214static struct tmp401_data *tmp401_update_device(struct device *dev)
215{
216 struct i2c_client *client = to_i2c_client(dev);
217 struct tmp401_data *data = i2c_get_clientdata(client);
218
219 mutex_lock(&data->update_lock);
220
221 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
222 data->status = i2c_smbus_read_byte_data(client, TMP401_STATUS);
223 data->config = i2c_smbus_read_byte_data(client,
224 TMP401_CONFIG_READ);
225 tmp401_update_device_reg16(client, data);
226
227 data->temp_crit_hyst = i2c_smbus_read_byte_data(client,
228 TMP401_TEMP_CRIT_HYST);
229
230 data->last_updated = jiffies;
231 data->valid = 1;
232 }
233
234 mutex_unlock(&data->update_lock);
235
236 return data;
237}
238
197static ssize_t show_temp_value(struct device *dev, 239static ssize_t show_temp_value(struct device *dev,
198 struct device_attribute *devattr, char *buf) 240 struct device_attribute *devattr, char *buf)
199{ 241{
@@ -535,6 +577,27 @@ static int tmp401_detect(struct i2c_client *client,
535 return 0; 577 return 0;
536} 578}
537 579
580static int tmp401_remove(struct i2c_client *client)
581{
582 struct tmp401_data *data = i2c_get_clientdata(client);
583 int i;
584
585 if (data->hwmon_dev)
586 hwmon_device_unregister(data->hwmon_dev);
587
588 for (i = 0; i < ARRAY_SIZE(tmp401_attr); i++)
589 device_remove_file(&client->dev, &tmp401_attr[i].dev_attr);
590
591 if (data->kind == tmp411) {
592 for (i = 0; i < ARRAY_SIZE(tmp411_attr); i++)
593 device_remove_file(&client->dev,
594 &tmp411_attr[i].dev_attr);
595 }
596
597 kfree(data);
598 return 0;
599}
600
538static int tmp401_probe(struct i2c_client *client, 601static int tmp401_probe(struct i2c_client *client,
539 const struct i2c_device_id *id) 602 const struct i2c_device_id *id)
540{ 603{
@@ -587,91 +650,17 @@ exit_remove:
587 return err; 650 return err;
588} 651}
589 652
590static int tmp401_remove(struct i2c_client *client) 653static struct i2c_driver tmp401_driver = {
591{ 654 .class = I2C_CLASS_HWMON,
592 struct tmp401_data *data = i2c_get_clientdata(client); 655 .driver = {
593 int i; 656 .name = "tmp401",
594 657 },
595 if (data->hwmon_dev) 658 .probe = tmp401_probe,
596 hwmon_device_unregister(data->hwmon_dev); 659 .remove = tmp401_remove,
597 660 .id_table = tmp401_id,
598 for (i = 0; i < ARRAY_SIZE(tmp401_attr); i++) 661 .detect = tmp401_detect,
599 device_remove_file(&client->dev, &tmp401_attr[i].dev_attr); 662 .address_list = normal_i2c,
600 663};
601 if (data->kind == tmp411) {
602 for (i = 0; i < ARRAY_SIZE(tmp411_attr); i++)
603 device_remove_file(&client->dev,
604 &tmp411_attr[i].dev_attr);
605 }
606
607 kfree(data);
608 return 0;
609}
610
611static struct tmp401_data *tmp401_update_device_reg16(
612 struct i2c_client *client, struct tmp401_data *data)
613{
614 int i;
615
616 for (i = 0; i < 2; i++) {
617 /*
618 * High byte must be read first immediately followed
619 * by the low byte
620 */
621 data->temp[i] = i2c_smbus_read_byte_data(client,
622 TMP401_TEMP_MSB[i]) << 8;
623 data->temp[i] |= i2c_smbus_read_byte_data(client,
624 TMP401_TEMP_LSB[i]);
625 data->temp_low[i] = i2c_smbus_read_byte_data(client,
626 TMP401_TEMP_LOW_LIMIT_MSB_READ[i]) << 8;
627 data->temp_low[i] |= i2c_smbus_read_byte_data(client,
628 TMP401_TEMP_LOW_LIMIT_LSB[i]);
629 data->temp_high[i] = i2c_smbus_read_byte_data(client,
630 TMP401_TEMP_HIGH_LIMIT_MSB_READ[i]) << 8;
631 data->temp_high[i] |= i2c_smbus_read_byte_data(client,
632 TMP401_TEMP_HIGH_LIMIT_LSB[i]);
633 data->temp_crit[i] = i2c_smbus_read_byte_data(client,
634 TMP401_TEMP_CRIT_LIMIT[i]);
635
636 if (data->kind == tmp411) {
637 data->temp_lowest[i] = i2c_smbus_read_byte_data(client,
638 TMP411_TEMP_LOWEST_MSB[i]) << 8;
639 data->temp_lowest[i] |= i2c_smbus_read_byte_data(
640 client, TMP411_TEMP_LOWEST_LSB[i]);
641
642 data->temp_highest[i] = i2c_smbus_read_byte_data(
643 client, TMP411_TEMP_HIGHEST_MSB[i]) << 8;
644 data->temp_highest[i] |= i2c_smbus_read_byte_data(
645 client, TMP411_TEMP_HIGHEST_LSB[i]);
646 }
647 }
648 return data;
649}
650
651static struct tmp401_data *tmp401_update_device(struct device *dev)
652{
653 struct i2c_client *client = to_i2c_client(dev);
654 struct tmp401_data *data = i2c_get_clientdata(client);
655
656 mutex_lock(&data->update_lock);
657
658 if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
659 data->status = i2c_smbus_read_byte_data(client, TMP401_STATUS);
660 data->config = i2c_smbus_read_byte_data(client,
661 TMP401_CONFIG_READ);
662 tmp401_update_device_reg16(client, data);
663
664 data->temp_crit_hyst = i2c_smbus_read_byte_data(client,
665 TMP401_TEMP_CRIT_HYST);
666
667 data->last_updated = jiffies;
668 data->valid = 1;
669 }
670
671 mutex_unlock(&data->update_lock);
672
673 return data;
674}
675 664
676static int __init tmp401_init(void) 665static int __init tmp401_init(void)
677{ 666{
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-29 23:42:14 -0500