Commit ee44fafb authored by Mike Jones's avatar Mike Jones Committed by Guenter Roeck
Browse files

hwmon: (pmbus/ltc2978) add support for more parts. 



LTC2972, LTC2979, LTC3884, LTC3889, LTC7880, LTM4664, LTM4677,
LTM4678, LTM4680, LTM4700.

Signed-off-by: default avatarMike Jones <michael-a1.jones@analog.com>
Link: https://lore.kernel.org/r/1581032654-4330-1-git-send-email-michael-a1.jones@analog.com


[groeck: Fixed checkpatch issues (long lines, whitespace)]
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 50b6ced7

Documentation/hwmon/ltc2978.rst

+132 −38
Original line number Diff line number Diff line
@@ -3,6 +3,14 @@ Kernel driver ltc2978 


Supported chips:



  * Linear Technology LTC2972



    Prefix: 'ltc2972'



    Addresses scanned: -



    Datasheet: https://www.analog.com/en/products/ltc2972.html



  * Linear Technology LTC2974



    Prefix: 'ltc2974'
@@ -37,6 +45,14 @@ Supported chips: 


	       https://www.analog.com/en/products/ltc2978a



  * Linear Technology LTC2979



    Prefix: 'ltc2979'



    Addresses scanned: -



    Datasheet: https://www.analog.com/en/products/ltc2979



  * Linear Technology LTC2980



    Prefix: 'ltc2980'
@@ -69,6 +85,14 @@ Supported chips: 


    Datasheet: https://www.analog.com/en/products/ltc3883



  * Linear Technology LTC3884



    Prefix: 'ltc3884'



    Addresses scanned: -



    Datasheet: https://www.analog.com/en/products/ltc3884



  * Linear Technology LTC3886



    Prefix: 'ltc3886'
@@ -85,6 +109,22 @@ Supported chips: 


    Datasheet: https://www.analog.com/en/products/ltc3887



  * Linear Technology LTC3889



    Prefix: 'ltc3889'



    Addresses scanned: -



    Datasheet: https://www.analog.com/en/products/ltc3889



  * Linear Technology LTC7880



    Prefix: 'ltc7880'



    Addresses scanned: -



    Datasheet: https://www.analog.com/en/products/ltc7880



  * Linear Technology LTM2987



    Prefix: 'ltm2987'
@@ -93,6 +133,14 @@ Supported chips: 


    Datasheet: https://www.analog.com/en/products/ltm2987



  * Linear Technology LTM4644



    Prefix: 'ltm4644'



    Addresses scanned: -



    Datasheet: https://www.analog.com/en/products/ltm4644



   * Linear Technology LTM4675



    Prefix: 'ltm4675'
@@ -109,6 +157,30 @@ Supported chips: 


    Datasheet: https://www.analog.com/en/products/ltm4676



  * Linear Technology LTM4677



    Prefix: 'ltm4677'



    Addresses scanned: -



    Datasheet: https://www.analog.com/en/products/ltm4677



  * Linear Technology LTM4678



    Prefix: 'ltm4678'



    Addresses scanned: -



    Datasheet: https://www.analog.com/en/products/ltm4678



  * Analog Devices LTM4680



    Prefix: 'ltm4680'



    Addresses scanned: -



    Datasheet: http://www.analog.com/ltm4680



  * Analog Devices LTM4686



    Prefix: 'ltm4686'
@@ -117,6 +189,15 @@ Supported chips: 


    Datasheet: http://www.analog.com/ltm4686



  * Analog Devices LTM4700



    Prefix: 'ltm4700'



    Addresses scanned: -



    Datasheet: http://www.analog.com/ltm4700







Author: Guenter Roeck <linux@roeck-us.net>
@@ -166,13 +247,13 @@ in1_min Minimum input voltage. 


in1_max			Maximum input voltage.



			LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and

			LTM2987 only.

			LTC2974, LTC2975, LTC2977, LTC2980, LTC2978,

			LTC2979 and LTM2987 only.



in1_lcrit		Critical minimum input voltage.



			LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and

			LTM2987 only.

			LTC2972, LTC2974, LTC2975, LTC2977, LTC2980, LTC2978,

			LTC2979 and LTM2987 only.



in1_crit		Critical maximum input voltage.
@@ -180,29 +261,34 @@ in1_min_alarm Input voltage low alarm. 


in1_max_alarm		Input voltage high alarm.



			LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and

			LTM2987 only.

			LTC2972, LTC2974, LTC2975, LTC2977, LTC2980, LTC2978,

			LTC2979 and LTM2987 only.



in1_lcrit_alarm		Input voltage critical low alarm.



			LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and

			LTM2987 only.

			LTC2972, LTC2974, LTC2975, LTC2977, LTC2980, LTC2978,

			LTC2979 and LTM2987 only.



in1_crit_alarm		Input voltage critical high alarm.



in1_lowest		Lowest input voltage.



			LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and

			LTM2987 only.

			LTC2972, LTC2974, LTC2975, LTC2977, LTC2980, LTC2978,

			and LTM2987 only.



in1_highest		Highest input voltage.



in1_reset_history	Reset input voltage history.



in[N]_label		"vout[1-8]".



			- LTC2972: N=2-3

			- LTC2974, LTC2975: N=2-5

			- LTC2977, LTC2980, LTM2987: N=2-9

			- LTC2977, LTC2979, LTC2980, LTM2987: N=2-9

			- LTC2978: N=2-9

			- LTC3880, LTC3882, LTC23886 LTC3887, LTM4675, LTM4676:

			  N=2-3

			- LTC3880, LTC3882, LTC3884, LTC23886 LTC3887, LTC3889,

			  LTC7880, LTM4644, LTM4675, LTM4676, LTM4677, LTM4678,

			  LTM4680, LTM4700: N=2-3

			- LTC3883: N=2



in[N]_input		Measured output voltage.
@@ -225,8 +311,7 @@ in[N]_crit_alarm Output voltage critical high alarm. 


in[N]_lowest		Lowest output voltage.





			LTC2974, LTC2975,and LTC2978 only.

			LTC2972, LTC2974, LTC2975,and LTC2978 only.



in[N]_highest		Highest output voltage.
@@ -234,20 +319,24 @@ in[N]_reset_history Reset output voltage history. 


temp[N]_input		Measured temperature.



			- On LTC2972, temp[1-2] report external temperatures,

			  and temp 3 reports the chip temperature.

			- On LTC2974 and LTC2975, temp[1-4] report external

			  temperatures, and temp5 reports the chip temperature.

			- On LTC2977, LTC2980, LTC2978, and LTM2987, only one

			  temperature measurement is supported and reports

			  the chip temperature.

			- On LTC3880, LTC3882, LTC3887, LTM4675, and LTM4676,

			  temp1 and temp2 report external temperatures, and

			  temp3 reports the chip temperature.

			- On LTC2977, LTC2979, LTC2980, LTC2978, and LTM2987,

			  only one temperature measurement is supported and

			  reports the chip temperature.

			- On LTC3880, LTC3882, LTC3886, LTC3887, LTC3889,

			  LTM4664, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680,

			  and LTM4700, temp1 and temp2 report external

			  temperatures, and temp3 reports the chip temperature.

			- On LTC3883, temp1 reports an external temperature,

			  and temp2 reports the chip temperature.



temp[N]_min		Mimimum temperature.



			LTC2974, LCT2977, LTM2980, LTC2978, and LTM2987 only.

			LTC2972, LTC2974, LCT2977, LTM2980, LTC2978,

			LTC2979, and LTM2987 only.



temp[N]_max		Maximum temperature.
@@ -257,8 +346,8 @@ temp[N]_crit Critical high temperature. 


temp[N]_min_alarm	Temperature low alarm.



			LTC2974, LTC2975, LTC2977, LTM2980, LTC2978, and

			LTM2987 only.

			LTC2972, LTC2974, LTC2975, LTC2977, LTM2980, LTC2978,

			LTC2979, and LTM2987 only.



temp[N]_max_alarm	Temperature high alarm.
@@ -269,8 +358,8 @@ temp[N]_crit_alarm Temperature critical high alarm. 


temp[N]_lowest		Lowest measured temperature.



			- LTC2974, LTC2975, LTC2977, LTM2980, LTC2978, and

			  LTM2987 only.

			- LTC2972, LTC2974, LTC2975, LTC2977, LTM2980, LTC2978,

			  LTC2979, and LTM2987 only.

			- Not supported for chip temperature sensor on LTC2974

			  and LTC2975.
@@ -290,19 +379,22 @@ power1_input Measured input power. 


power[N]_label		"pout[1-4]".



			- LTC2972: N=1-2

			- LTC2974, LTC2975: N=1-4

			- LTC2977, LTC2980, LTM2987: Not supported

			- LTC2977, LTC2979, LTC2980, LTM2987: Not supported

			- LTC2978: Not supported

			- LTC3880, LTC3882, LTC3886, LTC3887, LTM4675, LTM4676:

			  N=1-2

			- LTC3880, LTC3882, LTC3884, LTC3886, LTC3887, LTC3889,

			  LTM4664, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680,

			  LTM4700: N=1-2

			- LTC3883: N=2



power[N]_input		Measured output power.



curr1_label		"iin".



			LTC3880, LTC3883, LTC3886, LTC3887, LTM4675,

			and LTM4676 only.

			LTC3880, LTC3883, LTC3884, LTC3886, LTC3887, LTC3889,

			LTM4644, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680,

			and LTM4700 only.



curr1_input		Measured input current.
@@ -320,11 +412,13 @@ curr1_reset_history Reset input current history. 


curr[N]_label		"iout[1-4]".



			- LTC2972: N-1-2

			- LTC2974, LTC2975: N=1-4

			- LTC2977, LTC2980, LTM2987: not supported

			- LTC2977, LTC2979, LTC2980, LTM2987: not supported

			- LTC2978: not supported

			- LTC3880, LTC3882, LTC3886, LTC3887, LTM4675, LTM4676:

			  N=2-3

			- LTC3880, LTC3882, LTC3884, LTC3886, LTC3887, LTC3889,

			  LTM4664, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680,

			  LTM4700: N=2-3

			- LTC3883: N=2



curr[N]_input		Measured output current.
@@ -335,7 +429,7 @@ curr[N]_crit Critical high output current. 


curr[N]_lcrit		Critical low output current.



			LTC2974 and LTC2975 only.

			LTC2972, LTC2974 and LTC2975 only.



curr[N]_max_alarm	Output current high alarm.
@@ -343,11 +437,11 @@ curr[N]_crit_alarm Output current critical high alarm. 


curr[N]_lcrit_alarm	Output current critical low alarm.



			LTC2974 and LTC2975 only.

			LTC2972, LTC2974 and LTC2975 only.



curr[N]_lowest		Lowest output current.



			LTC2974 and LTC2975 only.

			LTC2972, LTC2974 and LTC2975 only.



curr[N]_highest		Highest output current.

drivers/hwmon/pmbus/Kconfig

+6 −5
Original line number Diff line number Diff line
@@ -113,8 +113,8 @@ config SENSORS_LTC2978 
	tristate "Linear Technologies LTC2978 and compatibles"

	help

	  If you say yes here you get hardware monitoring support for Linear

	  Technology LTC2974, LTC2975, LTC2977, LTC2978, LTC2980, LTC3880,

	  LTC3883, LTC3886, LTC3887, LTCM2987, LTM4675, and LTM4676.

	  Technology LTC2972, LTC2974, LTC2975, LTC2977, LTC2978, LTC2979,

	  LTC2980, and LTM2987.



	  This driver can also be built as a module. If so, the module will

	  be called ltc2978.
@@ -123,9 +123,10 @@ config SENSORS_LTC2978_REGULATOR 
	bool "Regulator support for LTC2978 and compatibles"

	depends on SENSORS_LTC2978 && REGULATOR

	help

	  If you say yes here you get regulator support for Linear

	  Technology LTC2974, LTC2977, LTC2978, LTC3880, LTC3883, LTM4676

	  and LTM4686.

	  If you say yes here you get regulator support for Linear Technology

	  LTC3880, LTC3883, LTC3884, LTC3886, LTC3887, LTC3889, LTC7880, 

	  LTM4644, LTM4675, LTM4676, LTM4677, LTM4678, LTM4680, LTM4686, 

	  and LTM4700.



config SENSORS_LTC3815

	tristate "Linear Technologies LTC3815"

drivers/hwmon/pmbus/ltc2978.c

+90 −4
Original line number Diff line number Diff line
@@ -19,8 +19,15 @@ 
#include <linux/regulator/driver.h>

#include "pmbus.h"



enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,

	ltc3883, ltc3886, ltc3887, ltm2987, ltm4675, ltm4676, ltm4686 };

enum chips {

	/* Managers */

	ltc2972, ltc2974, ltc2975, ltc2977, ltc2978, ltc2979, ltc2980,

	/* Controllers */

	ltc3880, ltc3882, ltc3883, ltc3884, ltc3886, ltc3887, ltc3889, ltc7880,

	/* Modules */

	ltm2987, ltm4664, ltm4675, ltm4676, ltm4677, ltm4678, ltm4680, ltm4686,

	ltm4700,

};



/* Common for all chips */

#define LTC2978_MFR_VOUT_PEAK		0xdd
@@ -43,9 +50,10 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882, 
#define LTC3880_MFR_CLEAR_PEAKS		0xe3

#define LTC3880_MFR_TEMPERATURE2_PEAK	0xf4



/* LTC3883 and LTC3886 only */

/* LTC3883, LTC3884, LTC3886, LTC3889 and LTC7880 only */

#define LTC3883_MFR_IIN_PEAK		0xe1





/* LTC2975 only */

#define LTC2975_MFR_IIN_PEAK		0xc4

#define LTC2975_MFR_IIN_MIN		0xc5
@@ -54,27 +62,41 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882, 


#define LTC2978_ID_MASK			0xfff0



#define LTC2972_ID			0x0310

#define LTC2974_ID			0x0210

#define LTC2975_ID			0x0220

#define LTC2977_ID			0x0130

#define LTC2978_ID_REV1			0x0110	/* Early revision */

#define LTC2978_ID_REV2			0x0120

#define LTC2979_ID_A			0x8060

#define LTC2979_ID_B			0x8070

#define LTC2980_ID_A			0x8030	/* A/B for two die IDs */

#define LTC2980_ID_B			0x8040

#define LTC3880_ID			0x4020

#define LTC3882_ID			0x4200

#define LTC3882_ID_D1			0x4240	/* Dash 1 */

#define LTC3883_ID			0x4300

#define LTC3884_ID			0x4C00

#define LTC3886_ID			0x4600

#define LTC3887_ID			0x4700

#define LTM2987_ID_A			0x8010	/* A/B for two die IDs */

#define LTM2987_ID_B			0x8020

#define LTC3889_ID			0x4900

#define LTC7880_ID			0x49E0

#define LTM4664_ID			0x4120

#define LTM4675_ID			0x47a0

#define LTM4676_ID_REV1			0x4400

#define LTM4676_ID_REV2			0x4480

#define LTM4676A_ID			0x47e0

#define LTM4677_ID_REV1			0x47B0

#define LTM4677_ID_REV2			0x47D0

#define LTM4678_ID_REV1			0x4100

#define LTM4678_ID_REV2			0x4110

#define LTM4680_ID			0x4140

#define LTM4686_ID			0x4770

#define LTM4700_ID			0x4130



#define LTC2972_NUM_PAGES		2

#define LTC2974_NUM_PAGES		4

#define LTC2978_NUM_PAGES		8

#define LTC3880_NUM_PAGES		2
@@ -492,20 +514,30 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page, 
}



static const struct i2c_device_id ltc2978_id[] = {

	{"ltc2972", ltc2972},

	{"ltc2974", ltc2974},

	{"ltc2975", ltc2975},

	{"ltc2977", ltc2977},

	{"ltc2978", ltc2978},

	{"ltc2979", ltc2979},

	{"ltc2980", ltc2980},

	{"ltc3880", ltc3880},

	{"ltc3882", ltc3882},

	{"ltc3883", ltc3883},

	{"ltc3884", ltc3884},

	{"ltc3886", ltc3886},

	{"ltc3887", ltc3887},

	{"ltc3889", ltc3889},

	{"ltc7880", ltc7880},

	{"ltm2987", ltm2987},

	{"ltm4664", ltm4664},

	{"ltm4675", ltm4675},

	{"ltm4676", ltm4676},

	{"ltm4677", ltm4677},

	{"ltm4678", ltm4678},

	{"ltm4680", ltm4680},

	{"ltm4686", ltm4686},

	{"ltm4700", ltm4700},

	{}

};

MODULE_DEVICE_TABLE(i2c, ltc2978_id);
@@ -555,7 +587,9 @@ static int ltc2978_get_id(struct i2c_client *client) 


	chip_id &= LTC2978_ID_MASK;



	if (chip_id == LTC2974_ID)

	if (chip_id == LTC2972_ID)

		return ltc2972;

	else if (chip_id == LTC2974_ID)

		return ltc2974;

	else if (chip_id == LTC2975_ID)

		return ltc2975;
@@ -563,6 +597,8 @@ static int ltc2978_get_id(struct i2c_client *client) 
		return ltc2977;

	else if (chip_id == LTC2978_ID_REV1 || chip_id == LTC2978_ID_REV2)

		return ltc2978;

	else if (chip_id == LTC2979_ID_A || chip_id == LTC2979_ID_B)

		return ltc2979;

	else if (chip_id == LTC2980_ID_A || chip_id == LTC2980_ID_B)

		return ltc2980;

	else if (chip_id == LTC3880_ID)
@@ -571,19 +607,35 @@ static int ltc2978_get_id(struct i2c_client *client) 
		return ltc3882;

	else if (chip_id == LTC3883_ID)

		return ltc3883;

	else if (chip_id == LTC3884_ID)

		return ltc3884;

	else if (chip_id == LTC3886_ID)

		return ltc3886;

	else if (chip_id == LTC3887_ID)

		return ltc3887;

	else if (chip_id == LTC3889_ID)

		return ltc3889;

	else if (chip_id == LTC7880_ID)

		return ltc7880;

	else if (chip_id == LTM2987_ID_A || chip_id == LTM2987_ID_B)

		return ltm2987;

	else if (chip_id == LTM4664_ID)

		return ltm4664;

	else if (chip_id == LTM4675_ID)

		return ltm4675;

	else if (chip_id == LTM4676_ID_REV1 || chip_id == LTM4676_ID_REV2 ||

		 chip_id == LTM4676A_ID)

		return ltm4676;

	else if (chip_id == LTM4677_ID_REV1 || chip_id == LTM4677_ID_REV2)

		return ltm4677;

	else if (chip_id == LTM4678_ID_REV1 || chip_id == LTM4678_ID_REV2)

		return ltm4678;

	else if (chip_id == LTM4680_ID)

		return ltm4680;

	else if (chip_id == LTM4686_ID)

		return ltm4686;

	else if (chip_id == LTM4700_ID)

		return ltm4700;



	dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id);

	return -ENODEV;
@@ -637,6 +689,19 @@ static int ltc2978_probe(struct i2c_client *client, 
	data->temp2_max = 0x7c00;



	switch (data->id) {

	case ltc2972:

		info->read_word_data = ltc2975_read_word_data;

		info->pages = LTC2972_NUM_PAGES;

		info->func[0] = PMBUS_HAVE_IIN | PMBUS_HAVE_PIN

		  | PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT

		  | PMBUS_HAVE_TEMP2;

		for (i = 0; i < info->pages; i++) {

			info->func[i] |= PMBUS_HAVE_VOUT

			  | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_POUT

			  | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP

			  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT;

		}

		break;

	case ltc2974:

		info->read_word_data = ltc2974_read_word_data;

		info->pages = LTC2974_NUM_PAGES;
@@ -662,8 +727,10 @@ static int ltc2978_probe(struct i2c_client *client, 
			  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT;

		}

		break;



	case ltc2977:

	case ltc2978:

	case ltc2979:

	case ltc2980:

	case ltm2987:

		info->read_word_data = ltc2978_read_word_data;
@@ -680,6 +747,7 @@ static int ltc2978_probe(struct i2c_client *client, 
	case ltc3887:

	case ltm4675:

	case ltm4676:

	case ltm4677:

	case ltm4686:

		data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;

		info->read_word_data = ltc3880_read_word_data;
@@ -721,7 +789,14 @@ static int ltc2978_probe(struct i2c_client *client, 
		  | PMBUS_HAVE_PIN | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP

		  | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP;

		break;

	case ltc3884:

	case ltc3886:

	case ltc3889:

	case ltc7880:

	case ltm4664:

	case ltm4678:

	case ltm4680:

	case ltm4700:

		data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING;

		info->read_word_data = ltc3883_read_word_data;

		info->pages = LTC3880_NUM_PAGES;
@@ -752,22 +827,33 @@ static int ltc2978_probe(struct i2c_client *client, 
	return pmbus_do_probe(client, id, info);

}





#ifdef CONFIG_OF

static const struct of_device_id ltc2978_of_match[] = {

	{ .compatible = "lltc,ltc2972" },

	{ .compatible = "lltc,ltc2974" },

	{ .compatible = "lltc,ltc2975" },

	{ .compatible = "lltc,ltc2977" },

	{ .compatible = "lltc,ltc2978" },

	{ .compatible = "lltc,ltc2979" },

	{ .compatible = "lltc,ltc2980" },

	{ .compatible = "lltc,ltc3880" },

	{ .compatible = "lltc,ltc3882" },

	{ .compatible = "lltc,ltc3883" },

	{ .compatible = "lltc,ltc3884" },

	{ .compatible = "lltc,ltc3886" },

	{ .compatible = "lltc,ltc3887" },

	{ .compatible = "lltc,ltc3889" },

	{ .compatible = "lltc,ltc7880" },

	{ .compatible = "lltc,ltm2987" },

	{ .compatible = "lltc,ltm4664" },

	{ .compatible = "lltc,ltm4675" },

	{ .compatible = "lltc,ltm4676" },

	{ .compatible = "lltc,ltm4677" },

	{ .compatible = "lltc,ltm4678" },

	{ .compatible = "lltc,ltm4680" },

	{ .compatible = "lltc,ltm4686" },

	{ .compatible = "lltc,ltm4700" },

	{ }

};

MODULE_DEVICE_TABLE(of, ltc2978_of_match);

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