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path: root/drivers/hwmon/adm9240.c
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Diffstat (limited to 'drivers/hwmon/adm9240.c')
-rw-r--r--drivers/hwmon/adm9240.c70
1 files changed, 26 insertions, 44 deletions
diff --git a/drivers/hwmon/adm9240.c b/drivers/hwmon/adm9240.c
index 2444b15f2e9d..0727ad250793 100644
--- a/drivers/hwmon/adm9240.c
+++ b/drivers/hwmon/adm9240.c
@@ -55,8 +55,7 @@
55static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, 55static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
56 I2C_CLIENT_END }; 56 I2C_CLIENT_END };
57 57
58/* Insmod parameters */ 58enum chips { adm9240, ds1780, lm81 };
59I2C_CLIENT_INSMOD_3(adm9240, ds1780, lm81);
60 59
61/* ADM9240 registers */ 60/* ADM9240 registers */
62#define ADM9240_REG_MAN_ID 0x3e 61#define ADM9240_REG_MAN_ID 0x3e
@@ -132,7 +131,7 @@ static inline unsigned int AOUT_FROM_REG(u8 reg)
132 131
133static int adm9240_probe(struct i2c_client *client, 132static int adm9240_probe(struct i2c_client *client,
134 const struct i2c_device_id *id); 133 const struct i2c_device_id *id);
135static int adm9240_detect(struct i2c_client *client, int kind, 134static int adm9240_detect(struct i2c_client *client,
136 struct i2c_board_info *info); 135 struct i2c_board_info *info);
137static void adm9240_init_client(struct i2c_client *client); 136static void adm9240_init_client(struct i2c_client *client);
138static int adm9240_remove(struct i2c_client *client); 137static int adm9240_remove(struct i2c_client *client);
@@ -156,7 +155,7 @@ static struct i2c_driver adm9240_driver = {
156 .remove = adm9240_remove, 155 .remove = adm9240_remove,
157 .id_table = adm9240_id, 156 .id_table = adm9240_id,
158 .detect = adm9240_detect, 157 .detect = adm9240_detect,
159 .address_data = &addr_data, 158 .address_list = normal_i2c,
160}; 159};
161 160
162/* per client data */ 161/* per client data */
@@ -545,7 +544,7 @@ static const struct attribute_group adm9240_group = {
545/*** sensor chip detect and driver install ***/ 544/*** sensor chip detect and driver install ***/
546 545
547/* Return 0 if detection is successful, -ENODEV otherwise */ 546/* Return 0 if detection is successful, -ENODEV otherwise */
548static int adm9240_detect(struct i2c_client *new_client, int kind, 547static int adm9240_detect(struct i2c_client *new_client,
549 struct i2c_board_info *info) 548 struct i2c_board_info *info)
550{ 549{
551 struct i2c_adapter *adapter = new_client->adapter; 550 struct i2c_adapter *adapter = new_client->adapter;
@@ -556,51 +555,34 @@ static int adm9240_detect(struct i2c_client *new_client, int kind,
556 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 555 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
557 return -ENODEV; 556 return -ENODEV;
558 557
559 if (kind == 0) { 558 /* verify chip: reg address should match i2c address */
560 kind = adm9240; 559 if (i2c_smbus_read_byte_data(new_client, ADM9240_REG_I2C_ADDR)
561 } 560 != address) {
562 561 dev_err(&adapter->dev, "detect fail: address match, 0x%02x\n",
563 if (kind < 0) { 562 address);
564 563 return -ENODEV;
565 /* verify chip: reg address should match i2c address */
566 if (i2c_smbus_read_byte_data(new_client, ADM9240_REG_I2C_ADDR)
567 != address) {
568 dev_err(&adapter->dev, "detect fail: address match, "
569 "0x%02x\n", address);
570 return -ENODEV;
571 }
572
573 /* check known chip manufacturer */
574 man_id = i2c_smbus_read_byte_data(new_client,
575 ADM9240_REG_MAN_ID);
576 if (man_id == 0x23) {
577 kind = adm9240;
578 } else if (man_id == 0xda) {
579 kind = ds1780;
580 } else if (man_id == 0x01) {
581 kind = lm81;
582 } else {
583 dev_err(&adapter->dev, "detect fail: unknown manuf, "
584 "0x%02x\n", man_id);
585 return -ENODEV;
586 }
587
588 /* successful detect, print chip info */
589 die_rev = i2c_smbus_read_byte_data(new_client,
590 ADM9240_REG_DIE_REV);
591 dev_info(&adapter->dev, "found %s revision %u\n",
592 man_id == 0x23 ? "ADM9240" :
593 man_id == 0xda ? "DS1780" : "LM81", die_rev);
594 } 564 }
595 565
596 /* either forced or detected chip kind */ 566 /* check known chip manufacturer */
597 if (kind == adm9240) { 567 man_id = i2c_smbus_read_byte_data(new_client, ADM9240_REG_MAN_ID);
568 if (man_id == 0x23) {
598 name = "adm9240"; 569 name = "adm9240";
599 } else if (kind == ds1780) { 570 } else if (man_id == 0xda) {
600 name = "ds1780"; 571 name = "ds1780";
601 } else if (kind == lm81) { 572 } else if (man_id == 0x01) {
602 name = "lm81"; 573 name = "lm81";
574 } else {
575 dev_err(&adapter->dev, "detect fail: unknown manuf, 0x%02x\n",
576 man_id);
577 return -ENODEV;
603 } 578 }
579
580 /* successful detect, print chip info */
581 die_rev = i2c_smbus_read_byte_data(new_client, ADM9240_REG_DIE_REV);
582 dev_info(&adapter->dev, "found %s revision %u\n",
583 man_id == 0x23 ? "ADM9240" :
584 man_id == 0xda ? "DS1780" : "LM81", die_rev);
585
604 strlcpy(info->type, name, I2C_NAME_SIZE); 586 strlcpy(info->type, name, I2C_NAME_SIZE);
605 587
606 return 0; 588 return 0;