Some of the LTC chips supported by this driver have to be polled
to ensure that they are ready to accept commands.
Signed-off-by: Michael Jones <mike@proclivis.com>
[Guenter Roeck: simplifications and formatting changes]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

PMBus controllers optionally support PEC. Configure the driver
to use it if available to improve operational security.
Suggested-by: Michael Jones <mike@proclivis.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Using the BIT macro makes the code a little easier to read.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

LTC3886 is a is a dual PolyPhase DC/DC synchronous step-down switching
regulator controller. It is mostly command compatible to LTC3883,
but supports two phases instead of one.
Suggested-by: Michael Jones <mike@proclivis.com>
Tested-by: Michael Jones <mike@proclivis.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

LTC2980 and LTM2987 are command compatible to LTC2977. They consist of
two LTC2977 on a single die, and are instantiated as two separate chips,
each supporting eight channels.
Suggested-by: Michael Jones <mike@proclivis.com>
Tested-by: Michael Jones <mike@proclivis.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add additional chip ID for an older revision of LTC2978, as well
as two chip IDs for LTC3882. Turns out the LTC3882 does support the
LTC2978_MFR_SPECIAL_ID register, and reading it returns its chip ID,
but the register is undocumented.
Suggested-by: Michael Jones <mike@proclivis.com>
Tested-by: Michael Jones <mike@proclivis.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Per information from Linear Technologies, the ID mask is 12 bit
for all chips of this series. Use this mask to detect chips to ensure
that all chip revisions are detected.
Suggested-by: Michael Jones <mike@proclivis.com>
Tested-by: Michael Jones <mike@proclivis.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

The code used to determine historic low and high peaks is repeated
several times. Introduce helper functions to simplify it.
Tested-by: Michael Jones <mike@proclivis.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

It is becoming cumbersom to track per-chip feature support.
Introduce feature flag to simplify the code.
Tested-by: Michael Jones <mike@proclivis.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

This will simplify adding new virtual commands.
Tested-by: Michael Jones <mike@proclivis.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

LTC2975 is mostly compatible to LTC2974, but supports input current
and power measurement.
Tested-by: Michael Jones <mike@proclivis.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

LTC3887 is an enhanced version of LTC3880 and supports the same commands.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Per datasheet, the chip ID for LTM4676 is 0x448x. This was observed
in real systems. In addition to that, chip ID 0x4401 was observed
as well. Research shows that the chip ID has been changed from 0x440x
to 0x448x in datasheet revision C. Add support for the additional chip ID.

Also add the chip ID for LTM4676A, which is functionally identical
to LTM4676.
Reported-by: Ananda Babu Nettam <anandab@juniper.net>
Cc: Ananda Babu Nettam <anandab@juniper.net>
Cc: Amit U Jain <amjain@juniper.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

LTC3882 is mostly compatible with LTC3880. Major differences are that it
does not measure the input current, and it no longer supports LTC's legacy
mechanism to identify the chip.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Verifying the chip type is getting more complicated with new chips,
since not all chips support the same mechanism to read the chip type.
Move the code into a separate function to simplify adding support for
those chips.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

This change sht15_reverse() to be generic bitrev8().
Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add device IDs and references for Texas Instruments TPS544B20, TPS544B25,
TPS544C20, and TPS544C25 to the generic PMBus driver.
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

MAX20751 is a multiphase power controller with internal buck converter.
It uses VR12.0 to report the output voltage. This requires an explicit
driver, since the VR version can not be auto-detected.

The chip supports a manufacturer specific command to fine-tune the output
voltage.  This command is not currently supported.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Newer chips such as MAX20751 support VR12. Add support for it.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add support for the IT8732F.  This chip is pretty similar to IT8721F,
with the main difference being that the ADC LSB is 10.9 mV instead of
12 mV.
Signed-off-by: Justin Maggard <jmaggard@netgear.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Introduced REG_PWM, pwm[1..3]_auto_point[1..5]_temp,
pwm[1..3]_auto_point[1..5]_pwm, nct7802_auto_point_attrs,
nct7802_auto_point_group, updated nct7802_regmap_is_volatile
Signed-off-by: Constantine Shulyupin <const@MakeLinux.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Allow the lm70 to be probed from a device tree.
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Use the CLEAR_PEAKS command on LTM4676.
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

ADM1293 and ADM1294 are mostly compatible with other chips of the same
series, but have more configuration options. There are also some
differences in register details.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add support for powerX_input_lowest for both input and output power.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Introduce have_vout, have_vaux_status, have_pin_max, and have_uc_fault
to simplify adding support for new chips.

Also simplify error returns where appropriate to return immediately
on error.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Each new chip supported by the driver has a new set of coefficients,
making hard-coding coefficients more and more cumbersome. Introduce
a datastructure and table to simplify configuration.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Use BIT macro to simplify adding new bit masks.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

pmbus_regulator_ops is not modified after initialized, so make it const.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

The pmbus_regulator_ops is for voltage regulators, so explicitly set
regulator type for better readability.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

i2c_driver does not need to set an owner because i2c_register_driver()
will set it.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add f81768d (id 0x1210) currently found on Jetway motherboards.
It has 11 voltages but otherwise needed no special handling
in this driver.
Signed-off-by: George Joseph <george.joseph@fairview5.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Introduced REG_SMARTFAN_EN, SMARTFAN_EN_SHIFT, pwmX_enable,
show_pwm_enable, store_pwm_enable.
Signed-off-by: Constantine Shulyupin <const@MakeLinux.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

The f81866a voltage-1 protector(VIN1) address
is differ from f71882.

f71882 status:12H, beep:13H, v-high:32H
f81866a status:16H, beep:17H, v-high:3aH
Signed-off-by: Peter Hung <hpeter+linux_kernel@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

The temperature value of Fintek F81866 is the same with
f71882fg. It located with 0x6c + 2*(nr), others located
with 0x6c + 2*(nr+1). We change the rule in f71882fg_probe(),
If type = f71858fg/f8000/f81866a. the temp_start will set to 0,
others are 1.

The F81866 over-temperature beep setting is not the same with
f71882fg too. They are using the same address 63H, but F81866 is
using bit 0/1/2 & 4/5/6, others are using bit 1/2/3 & 5/6/7,
So we copy from fxxxx_temp_beep_attr[] to f81866_temp_beep_attr
and change bit setting.
Signed-off-by: Peter Hung <hpeter+linux_kernel@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Add New Fintek SuperIO F81866(0x1010) & F71868(0x1106)
with H/W Monitor functions.

We increased F71882FG_MAX_INS from 9 to 10 to read
F71868 10 voltage sets.
Signed-off-by: Peter Hung <hpeter+linux_kernel@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Introduced: show_pwm_mode, pwm1_mode, pwm2_mode, pwm2_mode
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Added fan output control registers.
Modes of operation are PWM (default) and DC.

Introduced show_pwm, store_pwm, nct7802_pwm_attrs, nct7802_pwm_group.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Sensor type:
3 diode (current mode), MD=1
4 thermistor, MD=2

Reference:
Nuvoton Hardware Monitoring IC NCT7802Y
7.2.32 Mode Selection Register
Location : Index 22h
Signed-off-by: Constantine Shulyupin <const@MakeLinux.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>