diff options
author | Guenter Roeck <linux@roeck-us.net> | 2014-03-06 00:23:01 -0500 |
---|---|---|
committer | Guenter Roeck <linux@roeck-us.net> | 2014-03-19 21:59:40 -0400 |
commit | f76992b00a4111fc4679b0b2d49fe75f05c2b04d (patch) | |
tree | dd188d5108dfee2f8f525833bb359b8d9b8b1c8c /drivers/hwmon | |
parent | a2e151074366487dcde943fdc08d88acfe476f9d (diff) |
hwmon: (pmbus/ltc2978) Add support for LTM4676
The chip's programming interface is quite similar to LTC3880
and supports the same set of sensors.
Reviewed-by: Robert Coulson <rob.coulson@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r-- | drivers/hwmon/pmbus/ltc2978.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c index 629bfe0fe90a..e24ed521051a 100644 --- a/drivers/hwmon/pmbus/ltc2978.c +++ b/drivers/hwmon/pmbus/ltc2978.c | |||
@@ -1,9 +1,9 @@ | |||
1 | /* | 1 | /* |
2 | * Hardware monitoring driver for LTC2974, LTC2977, LTC2978, LTC3880, | 2 | * Hardware monitoring driver for LTC2974, LTC2977, LTC2978, LTC3880, |
3 | * and LTC3883 | 3 | * LTC3883, and LTM4676 |
4 | * | 4 | * |
5 | * Copyright (c) 2011 Ericsson AB. | 5 | * Copyright (c) 2011 Ericsson AB. |
6 | * Copyright (c) 2013 Guenter Roeck | 6 | * Copyright (c) 2013, 2014 Guenter Roeck |
7 | * | 7 | * |
8 | * This program is free software; you can redistribute it and/or modify | 8 | * This program is free software; you can redistribute it and/or modify |
9 | * it under the terms of the GNU General Public License as published by | 9 | * it under the terms of the GNU General Public License as published by |
@@ -14,10 +14,6 @@ | |||
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | * GNU General Public License for more details. | 16 | * GNU General Public License for more details. |
17 | * | ||
18 | * You should have received a copy of the GNU General Public License | ||
19 | * along with this program; if not, write to the Free Software | ||
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
21 | */ | 17 | */ |
22 | 18 | ||
23 | #include <linux/kernel.h> | 19 | #include <linux/kernel.h> |
@@ -28,7 +24,7 @@ | |||
28 | #include <linux/i2c.h> | 24 | #include <linux/i2c.h> |
29 | #include "pmbus.h" | 25 | #include "pmbus.h" |
30 | 26 | ||
31 | enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 }; | 27 | enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883, ltm4676 }; |
32 | 28 | ||
33 | /* Common for all chips */ | 29 | /* Common for all chips */ |
34 | #define LTC2978_MFR_VOUT_PEAK 0xdd | 30 | #define LTC2978_MFR_VOUT_PEAK 0xdd |
@@ -45,7 +41,7 @@ enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 }; | |||
45 | #define LTC2974_MFR_IOUT_PEAK 0xd7 | 41 | #define LTC2974_MFR_IOUT_PEAK 0xd7 |
46 | #define LTC2974_MFR_IOUT_MIN 0xd8 | 42 | #define LTC2974_MFR_IOUT_MIN 0xd8 |
47 | 43 | ||
48 | /* LTC3880 and LTC3883 */ | 44 | /* LTC3880, LTC3883, and LTM4676 */ |
49 | #define LTC3880_MFR_IOUT_PEAK 0xd7 | 45 | #define LTC3880_MFR_IOUT_PEAK 0xd7 |
50 | #define LTC3880_MFR_CLEAR_PEAKS 0xe3 | 46 | #define LTC3880_MFR_CLEAR_PEAKS 0xe3 |
51 | #define LTC3880_MFR_TEMPERATURE2_PEAK 0xf4 | 47 | #define LTC3880_MFR_TEMPERATURE2_PEAK 0xf4 |
@@ -63,6 +59,8 @@ enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 }; | |||
63 | #define LTC3880_ID_MASK 0xff00 | 59 | #define LTC3880_ID_MASK 0xff00 |
64 | #define LTC3883_ID 0x4300 | 60 | #define LTC3883_ID 0x4300 |
65 | #define LTC3883_ID_MASK 0xff00 | 61 | #define LTC3883_ID_MASK 0xff00 |
62 | #define LTM4676_ID 0x4480 /* datasheet claims 0x440X */ | ||
63 | #define LTM4676_ID_MASK 0xfff0 | ||
66 | 64 | ||
67 | #define LTC2974_NUM_PAGES 4 | 65 | #define LTC2974_NUM_PAGES 4 |
68 | #define LTC2978_NUM_PAGES 8 | 66 | #define LTC2978_NUM_PAGES 8 |
@@ -371,6 +369,7 @@ static const struct i2c_device_id ltc2978_id[] = { | |||
371 | {"ltc2978", ltc2978}, | 369 | {"ltc2978", ltc2978}, |
372 | {"ltc3880", ltc3880}, | 370 | {"ltc3880", ltc3880}, |
373 | {"ltc3883", ltc3883}, | 371 | {"ltc3883", ltc3883}, |
372 | {"ltm4676", ltm4676}, | ||
374 | {} | 373 | {} |
375 | }; | 374 | }; |
376 | MODULE_DEVICE_TABLE(i2c, ltc2978_id); | 375 | MODULE_DEVICE_TABLE(i2c, ltc2978_id); |
@@ -406,6 +405,8 @@ static int ltc2978_probe(struct i2c_client *client, | |||
406 | data->id = ltc3880; | 405 | data->id = ltc3880; |
407 | } else if ((chip_id & LTC3883_ID_MASK) == LTC3883_ID) { | 406 | } else if ((chip_id & LTC3883_ID_MASK) == LTC3883_ID) { |
408 | data->id = ltc3883; | 407 | data->id = ltc3883; |
408 | } else if ((chip_id & LTM4676_ID_MASK) == LTM4676_ID) { | ||
409 | data->id = ltm4676; | ||
409 | } else { | 410 | } else { |
410 | dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id); | 411 | dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id); |
411 | return -ENODEV; | 412 | return -ENODEV; |
@@ -459,6 +460,7 @@ static int ltc2978_probe(struct i2c_client *client, | |||
459 | } | 460 | } |
460 | break; | 461 | break; |
461 | case ltc3880: | 462 | case ltc3880: |
463 | case ltm4676: | ||
462 | info->read_word_data = ltc3880_read_word_data; | 464 | info->read_word_data = ltc3880_read_word_data; |
463 | info->pages = LTC3880_NUM_PAGES; | 465 | info->pages = LTC3880_NUM_PAGES; |
464 | info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | 466 | info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN |
@@ -501,5 +503,5 @@ static struct i2c_driver ltc2978_driver = { | |||
501 | module_i2c_driver(ltc2978_driver); | 503 | module_i2c_driver(ltc2978_driver); |
502 | 504 | ||
503 | MODULE_AUTHOR("Guenter Roeck"); | 505 | MODULE_AUTHOR("Guenter Roeck"); |
504 | MODULE_DESCRIPTION("PMBus driver for LTC2974, LTC2978, LTC3880, and LTC3883"); | 506 | MODULE_DESCRIPTION("PMBus driver for LTC2974, LTC2978, LTC3880, LTC3883, and LTM4676"); |
505 | MODULE_LICENSE("GPL"); | 507 | MODULE_LICENSE("GPL"); |