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-rw-r--r--drivers/hwmon/adm9240.c93
1 files changed, 46 insertions, 47 deletions
diff --git a/drivers/hwmon/adm9240.c b/drivers/hwmon/adm9240.c
index 149ef25252e7..2444b15f2e9d 100644
--- a/drivers/hwmon/adm9240.c
+++ b/drivers/hwmon/adm9240.c
@@ -130,25 +130,37 @@ static inline unsigned int AOUT_FROM_REG(u8 reg)
130 return SCALE(reg, 1250, 255); 130 return SCALE(reg, 1250, 255);
131} 131}
132 132
133static int adm9240_attach_adapter(struct i2c_adapter *adapter); 133static int adm9240_probe(struct i2c_client *client,
134static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind); 134 const struct i2c_device_id *id);
135static int adm9240_detect(struct i2c_client *client, int kind,
136 struct i2c_board_info *info);
135static void adm9240_init_client(struct i2c_client *client); 137static void adm9240_init_client(struct i2c_client *client);
136static int adm9240_detach_client(struct i2c_client *client); 138static int adm9240_remove(struct i2c_client *client);
137static struct adm9240_data *adm9240_update_device(struct device *dev); 139static struct adm9240_data *adm9240_update_device(struct device *dev);
138 140
139/* driver data */ 141/* driver data */
142static const struct i2c_device_id adm9240_id[] = {
143 { "adm9240", adm9240 },
144 { "ds1780", ds1780 },
145 { "lm81", lm81 },
146 { }
147};
148MODULE_DEVICE_TABLE(i2c, adm9240_id);
149
140static struct i2c_driver adm9240_driver = { 150static struct i2c_driver adm9240_driver = {
151 .class = I2C_CLASS_HWMON,
141 .driver = { 152 .driver = {
142 .name = "adm9240", 153 .name = "adm9240",
143 }, 154 },
144 .attach_adapter = adm9240_attach_adapter, 155 .probe = adm9240_probe,
145 .detach_client = adm9240_detach_client, 156 .remove = adm9240_remove,
157 .id_table = adm9240_id,
158 .detect = adm9240_detect,
159 .address_data = &addr_data,
146}; 160};
147 161
148/* per client data */ 162/* per client data */
149struct adm9240_data { 163struct adm9240_data {
150 enum chips type;
151 struct i2c_client client;
152 struct device *hwmon_dev; 164 struct device *hwmon_dev;
153 struct mutex update_lock; 165 struct mutex update_lock;
154 char valid; 166 char valid;
@@ -532,28 +544,17 @@ static const struct attribute_group adm9240_group = {
532 544
533/*** sensor chip detect and driver install ***/ 545/*** sensor chip detect and driver install ***/
534 546
535static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind) 547/* Return 0 if detection is successful, -ENODEV otherwise */
548static int adm9240_detect(struct i2c_client *new_client, int kind,
549 struct i2c_board_info *info)
536{ 550{
537 struct i2c_client *new_client; 551 struct i2c_adapter *adapter = new_client->adapter;
538 struct adm9240_data *data;
539 int err = 0;
540 const char *name = ""; 552 const char *name = "";
553 int address = new_client->addr;
541 u8 man_id, die_rev; 554 u8 man_id, die_rev;
542 555
543 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 556 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
544 goto exit; 557 return -ENODEV;
545
546 if (!(data = kzalloc(sizeof(*data), GFP_KERNEL))) {
547 err = -ENOMEM;
548 goto exit;
549 }
550
551 new_client = &data->client;
552 i2c_set_clientdata(new_client, data);
553 new_client->addr = address;
554 new_client->adapter = adapter;
555 new_client->driver = &adm9240_driver;
556 new_client->flags = 0;
557 558
558 if (kind == 0) { 559 if (kind == 0) {
559 kind = adm9240; 560 kind = adm9240;
@@ -566,7 +567,7 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
566 != address) { 567 != address) {
567 dev_err(&adapter->dev, "detect fail: address match, " 568 dev_err(&adapter->dev, "detect fail: address match, "
568 "0x%02x\n", address); 569 "0x%02x\n", address);
569 goto exit_free; 570 return -ENODEV;
570 } 571 }
571 572
572 /* check known chip manufacturer */ 573 /* check known chip manufacturer */
@@ -581,7 +582,7 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
581 } else { 582 } else {
582 dev_err(&adapter->dev, "detect fail: unknown manuf, " 583 dev_err(&adapter->dev, "detect fail: unknown manuf, "
583 "0x%02x\n", man_id); 584 "0x%02x\n", man_id);
584 goto exit_free; 585 return -ENODEV;
585 } 586 }
586 587
587 /* successful detect, print chip info */ 588 /* successful detect, print chip info */
@@ -600,20 +601,31 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
600 } else if (kind == lm81) { 601 } else if (kind == lm81) {
601 name = "lm81"; 602 name = "lm81";
602 } 603 }
604 strlcpy(info->type, name, I2C_NAME_SIZE);
603 605
604 /* fill in the remaining client fields and attach */ 606 return 0;
605 strlcpy(new_client->name, name, I2C_NAME_SIZE); 607}
606 data->type = kind;
607 mutex_init(&data->update_lock);
608 608
609 if ((err = i2c_attach_client(new_client))) 609static int adm9240_probe(struct i2c_client *new_client,
610 goto exit_free; 610 const struct i2c_device_id *id)
611{
612 struct adm9240_data *data;
613 int err;
614
615 data = kzalloc(sizeof(*data), GFP_KERNEL);
616 if (!data) {
617 err = -ENOMEM;
618 goto exit;
619 }
620
621 i2c_set_clientdata(new_client, data);
622 mutex_init(&data->update_lock);
611 623
612 adm9240_init_client(new_client); 624 adm9240_init_client(new_client);
613 625
614 /* populate sysfs filesystem */ 626 /* populate sysfs filesystem */
615 if ((err = sysfs_create_group(&new_client->dev.kobj, &adm9240_group))) 627 if ((err = sysfs_create_group(&new_client->dev.kobj, &adm9240_group)))
616 goto exit_detach; 628 goto exit_free;
617 629
618 data->hwmon_dev = hwmon_device_register(&new_client->dev); 630 data->hwmon_dev = hwmon_device_register(&new_client->dev);
619 if (IS_ERR(data->hwmon_dev)) { 631 if (IS_ERR(data->hwmon_dev)) {
@@ -625,32 +637,19 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
625 637
626exit_remove: 638exit_remove:
627 sysfs_remove_group(&new_client->dev.kobj, &adm9240_group); 639 sysfs_remove_group(&new_client->dev.kobj, &adm9240_group);
628exit_detach:
629 i2c_detach_client(new_client);
630exit_free: 640exit_free:
631 kfree(data); 641 kfree(data);
632exit: 642exit:
633 return err; 643 return err;
634} 644}
635 645
636static int adm9240_attach_adapter(struct i2c_adapter *adapter) 646static int adm9240_remove(struct i2c_client *client)
637{
638 if (!(adapter->class & I2C_CLASS_HWMON))
639 return 0;
640 return i2c_probe(adapter, &addr_data, adm9240_detect);
641}
642
643static int adm9240_detach_client(struct i2c_client *client)
644{ 647{
645 struct adm9240_data *data = i2c_get_clientdata(client); 648 struct adm9240_data *data = i2c_get_clientdata(client);
646 int err;
647 649
648 hwmon_device_unregister(data->hwmon_dev); 650 hwmon_device_unregister(data->hwmon_dev);
649 sysfs_remove_group(&client->dev.kobj, &adm9240_group); 651 sysfs_remove_group(&client->dev.kobj, &adm9240_group);
650 652
651 if ((err = i2c_detach_client(client)))
652 return err;
653
654 kfree(data); 653 kfree(data);
655 return 0; 654 return 0;
656} 655}