diff options
| author | Thilo Cestonaro <thilo@cestona.ro> | 2016-08-16 07:07:53 -0400 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2016-09-09 00:34:16 -0400 |
| commit | 2d5aee433d9c5bb6075eb42039a21c5b3728d22d (patch) | |
| tree | b534bc94f26f2a6611eb5d75c9af0f1b5d5e0f35 /drivers/hwmon/ftsteutates.c | |
| parent | ed42cfa881e1d8d9603b7cb872199e3c8e0d1b19 (diff) | |
hwmon: (ftsteutates) Add i2c detect functionality
Signed-off-by: Thilo Cestonaro <thilo@cestona.ro>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/ftsteutates.c')
| -rw-r--r-- | drivers/hwmon/ftsteutates.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/hwmon/ftsteutates.c b/drivers/hwmon/ftsteutates.c index 48633e541dc3..0f0277e7aae5 100644 --- a/drivers/hwmon/ftsteutates.c +++ b/drivers/hwmon/ftsteutates.c | |||
| @@ -36,6 +36,10 @@ | |||
| 36 | #define FTS_EVENT_STATUS_REG 0x0006 | 36 | #define FTS_EVENT_STATUS_REG 0x0006 |
| 37 | #define FTS_GLOBAL_CONTROL_REG 0x0007 | 37 | #define FTS_GLOBAL_CONTROL_REG 0x0007 |
| 38 | 38 | ||
| 39 | #define FTS_DEVICE_DETECT_REG_1 0x0C | ||
| 40 | #define FTS_DEVICE_DETECT_REG_2 0x0D | ||
| 41 | #define FTS_DEVICE_DETECT_REG_3 0x0E | ||
| 42 | |||
| 39 | #define FTS_SENSOR_EVENT_REG 0x0010 | 43 | #define FTS_SENSOR_EVENT_REG 0x0010 |
| 40 | 44 | ||
| 41 | #define FTS_FAN_EVENT_REG 0x0014 | 45 | #define FTS_FAN_EVENT_REG 0x0014 |
| @@ -54,6 +58,8 @@ | |||
| 54 | #define FTS_NO_TEMP_SENSORS 0x10 | 58 | #define FTS_NO_TEMP_SENSORS 0x10 |
| 55 | #define FTS_NO_VOLT_SENSORS 0x04 | 59 | #define FTS_NO_VOLT_SENSORS 0x04 |
| 56 | 60 | ||
| 61 | static const unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; | ||
| 62 | |||
| 57 | static struct i2c_device_id fts_id[] = { | 63 | static struct i2c_device_id fts_id[] = { |
| 58 | { "ftsteutates", 0 }, | 64 | { "ftsteutates", 0 }, |
| 59 | { } | 65 | { } |
| @@ -734,6 +740,42 @@ static const struct attribute_group *fts_attr_groups[] = { | |||
| 734 | /*****************************************************************************/ | 740 | /*****************************************************************************/ |
| 735 | /* Module initialization / remove functions */ | 741 | /* Module initialization / remove functions */ |
| 736 | /*****************************************************************************/ | 742 | /*****************************************************************************/ |
| 743 | static int fts_detect(struct i2c_client *client, | ||
| 744 | struct i2c_board_info *info) | ||
| 745 | { | ||
| 746 | int val; | ||
| 747 | |||
| 748 | /* detection works with revsion greater or equal to 0x2b */ | ||
| 749 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_REVISION_REG); | ||
| 750 | if (val < 0x2b) | ||
| 751 | return -ENODEV; | ||
| 752 | |||
| 753 | /* Device Detect Regs must have 0x17 0x34 and 0x54 */ | ||
| 754 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_DETECT_REG_1); | ||
| 755 | if (val != 0x17) | ||
| 756 | return -ENODEV; | ||
| 757 | |||
| 758 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_DETECT_REG_2); | ||
| 759 | if (val != 0x34) | ||
| 760 | return -ENODEV; | ||
| 761 | |||
| 762 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_DETECT_REG_3); | ||
| 763 | if (val != 0x54) | ||
| 764 | return -ENODEV; | ||
| 765 | |||
| 766 | /* | ||
| 767 | * 0x10 == Baseboard Management Controller, 0x01 == Teutates | ||
| 768 | * Device ID Reg needs to be 0x11 | ||
| 769 | */ | ||
| 770 | val = i2c_smbus_read_byte_data(client, FTS_DEVICE_ID_REG); | ||
| 771 | if (val != 0x11) | ||
| 772 | return -ENODEV; | ||
| 773 | |||
| 774 | strlcpy(info->type, fts_id[0].name, I2C_NAME_SIZE); | ||
| 775 | info->flags = 0; | ||
| 776 | return 0; | ||
| 777 | } | ||
| 778 | |||
| 737 | static int fts_remove(struct i2c_client *client) | 779 | static int fts_remove(struct i2c_client *client) |
| 738 | { | 780 | { |
| 739 | struct fts_data *data = dev_get_drvdata(&client->dev); | 781 | struct fts_data *data = dev_get_drvdata(&client->dev); |
| @@ -804,12 +846,15 @@ static int fts_probe(struct i2c_client *client, const struct i2c_device_id *id) | |||
| 804 | /* Module Details */ | 846 | /* Module Details */ |
| 805 | /*****************************************************************************/ | 847 | /*****************************************************************************/ |
| 806 | static struct i2c_driver fts_driver = { | 848 | static struct i2c_driver fts_driver = { |
| 849 | .class = I2C_CLASS_HWMON, | ||
| 807 | .driver = { | 850 | .driver = { |
| 808 | .name = "ftsteutates", | 851 | .name = "ftsteutates", |
| 809 | }, | 852 | }, |
| 810 | .id_table = fts_id, | 853 | .id_table = fts_id, |
| 811 | .probe = fts_probe, | 854 | .probe = fts_probe, |
| 812 | .remove = fts_remove, | 855 | .remove = fts_remove, |
| 856 | .detect = fts_detect, | ||
| 857 | .address_list = normal_i2c, | ||
| 813 | }; | 858 | }; |
| 814 | 859 | ||
| 815 | module_i2c_driver(fts_driver); | 860 | module_i2c_driver(fts_driver); |