aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/hwmon/tmp401.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-09 22:53:11 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-09 22:53:11 -0500
commitf71eaf68406cfee91b6a96bcdf7ce33dc78829c5 (patch)
tree92a1663ae15d521f25849d28ebb4dfad10567892 /drivers/hwmon/tmp401.c
parent78f1ae193d1662c22cfebb916e788e1ca896c0fe (diff)
parent54fe4671aa5853ca88da72d67e969a3d8de6dcf6 (diff)
Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: (41 commits) hwmon: (adt7475) Add VID support for the ADT7476 hwmon: (adt7475) Add an entry in MAINTAINERS hwmon: (adt7475) Add support for the ADT7476 hwmon: (adt7475) Voltage attenuators can be bypassed hwmon: (adt7475) Print device information on probe hwmon: (adt7475) Handle alternative pin functions hwmon: (adt7475) Move sysfs files removal to a separate function hwmon: (adt7475) Add support for the ADT7490 hwmon: (adt7475) Improve device detection hwmon: (adt7475) Add missing static marker hwmon: (adt7475) Rework voltage inputs handling hwmon: (adt7475) Implement pwm_use_point2_pwm_at_crit hwmon: (adt7475) New documentation hwmon: (adt7475) Add support for the ADT7473 hwmon: (f71882fg) Add support for the f71889fg (version 2) hwmon: (f71882fg) Fix sysfs file removal hwmon: (f71882fg) Cleanup sysfs attr creation 2/2 hwmon: (f71882fg) Cleanup sysfs attr creation 1/2 hwmon: (thmc50) Stop using I2C_CLIENT_MODULE_PARM hwmon: Add Freescale MC13783 ADC driver ...
Diffstat (limited to 'drivers/hwmon/tmp401.c')
-rw-r--r--drivers/hwmon/tmp401.c55
1 files changed, 26 insertions, 29 deletions
diff --git a/drivers/hwmon/tmp401.c b/drivers/hwmon/tmp401.c
index 7b34f2cd08bb..ee9673467c4a 100644
--- a/drivers/hwmon/tmp401.c
+++ b/drivers/hwmon/tmp401.c
@@ -488,46 +488,43 @@ static void tmp401_init_client(struct i2c_client *client)
488 i2c_smbus_write_byte_data(client, TMP401_CONFIG_WRITE, config); 488 i2c_smbus_write_byte_data(client, TMP401_CONFIG_WRITE, config);
489} 489}
490 490
491static int tmp401_detect(struct i2c_client *client, int kind, 491static int tmp401_detect(struct i2c_client *client, int _kind,
492 struct i2c_board_info *info) 492 struct i2c_board_info *info)
493{ 493{
494 enum chips kind;
494 struct i2c_adapter *adapter = client->adapter; 495 struct i2c_adapter *adapter = client->adapter;
496 u8 reg;
495 497
496 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 498 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
497 return -ENODEV; 499 return -ENODEV;
498 500
499 /* Detect and identify the chip */ 501 /* Detect and identify the chip */
500 if (kind <= 0) { 502 reg = i2c_smbus_read_byte_data(client, TMP401_MANUFACTURER_ID_REG);
501 u8 reg; 503 if (reg != TMP401_MANUFACTURER_ID)
502 504 return -ENODEV;
503 reg = i2c_smbus_read_byte_data(client,
504 TMP401_MANUFACTURER_ID_REG);
505 if (reg != TMP401_MANUFACTURER_ID)
506 return -ENODEV;
507
508 reg = i2c_smbus_read_byte_data(client, TMP401_DEVICE_ID_REG);
509
510 switch (reg) {
511 case TMP401_DEVICE_ID:
512 kind = tmp401;
513 break;
514 case TMP411_DEVICE_ID:
515 kind = tmp411;
516 break;
517 default:
518 return -ENODEV;
519 }
520 505
521 reg = i2c_smbus_read_byte_data(client, TMP401_CONFIG_READ); 506 reg = i2c_smbus_read_byte_data(client, TMP401_DEVICE_ID_REG);
522 if (reg & 0x1b)
523 return -ENODEV;
524 507
525 reg = i2c_smbus_read_byte_data(client, 508 switch (reg) {
526 TMP401_CONVERSION_RATE_READ); 509 case TMP401_DEVICE_ID:
527 /* Datasheet says: 0x1-0x6 */ 510 kind = tmp401;
528 if (reg > 15) 511 break;
529 return -ENODEV; 512 case TMP411_DEVICE_ID:
513 kind = tmp411;
514 break;
515 default:
516 return -ENODEV;
530 } 517 }
518
519 reg = i2c_smbus_read_byte_data(client, TMP401_CONFIG_READ);
520 if (reg & 0x1b)
521 return -ENODEV;
522
523 reg = i2c_smbus_read_byte_data(client, TMP401_CONVERSION_RATE_READ);
524 /* Datasheet says: 0x1-0x6 */
525 if (reg > 15)
526 return -ENODEV;
527
531 strlcpy(info->type, tmp401_id[kind - 1].name, I2C_NAME_SIZE); 528 strlcpy(info->type, tmp401_id[kind - 1].name, I2C_NAME_SIZE);
532 529
533 return 0; 530 return 0;