linux-kernel - Re: [lm-sensors] [PATCH v2 2/3] hwmon: SMM665 driver documentation

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Date:	Fri, 25 Jun 2010 17:07:52 +0100
From:	Jonathan Cameron <kernel@...23.retrosnub.co.uk>
To:	Guenter Roeck <guenter.roeck@...csson.com>
CC:	Jean Delvare <khali@...ux-fr.org>,
	Hans de Goede <hdegoede@...hat.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	linux-kernel@...r.kernel.org, lm-sensors@...sensors.org
Subject: Re: [lm-sensors] [PATCH v2 2/3] hwmon: SMM665 driver documentation

On 06/25/10 15:40, Guenter Roeck wrote:
Looks good to me, if you are respinning for any reason, perhaps
say where the summit website is?

Acked-by: Jonathan Cameron <jic23@....ac.uk>
> Signed-off-by: Guenter Roeck <guenter.roeck@...csson.com>
> ---
>  Documentation/hwmon/smm665 |  151 ++++++++++++++++++++++++++++++++++++++++++++
>  1 files changed, 151 insertions(+), 0 deletions(-)
>  create mode 100644 Documentation/hwmon/smm665
> 
> diff --git a/Documentation/hwmon/smm665 b/Documentation/hwmon/smm665
> new file mode 100644
> index 0000000..8c08f63
> --- /dev/null
> +++ b/Documentation/hwmon/smm665
> @@ -0,0 +1,151 @@
> +Kernel driver smm665
> +====================
> +
> +Supported chips:
> +  * Summit Microelectronics SMM465
> +    Prefix: 'smm465'
> +    Addresses scanned: -
> +    Datasheet: Publicly available at the Summit Microelectronics website.
> +  * Summit Microelectronics SMM665, SMM665B
> +    Prefix: 'smm665'
> +    Addresses scanned: -
> +    Datasheet: Publicly available at the Summit Microelectronics website.
> +  * Summit Microelectronics SMM665C
> +    Prefix: 'smm665c'
> +    Addresses scanned: -
> +    Datasheet: Publicly available at the Summit Microelectronics website.
> +  * Summit Microelectronics SMM764
> +    Prefix: 'smm764'
> +    Addresses scanned: -
> +    Datasheet: Publicly available at the Summit Microelectronics website.
> +  * Summit Microelectronics SMM766
> +    Prefix: 'smm766'
> +    Addresses scanned: -
> +    Datasheet: Publicly available at the Summit Microelectronics website.
> +
> +Author: Guenter Roeck <guenter.roeck@...csson.com>
> +
> +
> +Module Parameters
> +-----------------
> +
> +* vref: int
> +  Default: 1250 (mV)
> +  Reference voltage on VREF_ADC pin in mV. It should not be necessary to set
> +  this parameter unless a non-default reference voltage is used.
> +
> +
> +Description
> +-----------
> +
> +[From datasheet] The SMM665 is an Active DC Output power supply Controller
> +that monitors, margins and cascade sequences power. The part monitors six
> +power supply channels as well as VDD, 12V input, two general-purpose analog
> +inputs and an internal temperature sensor using a 10-bit ADC.
> +
> +Each monitored channel has its own high and low limits, plus a critical
> +limit.
> +
> +Support for SMM465, SMM764, and SMM766 has been implemented but is untested.
> +
> +
> +Usage Notes
> +-----------
> +
> +This driver does not probe for devices, since there is no register which
> +can be safely used to identify the chip. You will have to instantiate
> +the devices explicitly. When instantiating the device, you have to specify
> +its configuration register address.
> +
> +Example: the following will load the driver for an SMM665 at address 0x57
> +on I2C bus #1:
> +$ modprobe smm665
> +$ echo smm665 0x57 > /sys/bus/i2c/devices/i2c-1/new_device
> +
> +
> +Sysfs entries
> +-------------
> +
> +This driver uses the values in the datasheet to convert ADC register values
> +into the values specified in the sysfs-interface document. All attributes are
> +read only.
> +
> +Min, max, lcrit, and crit values are used by the chip to trigger external signals
> +and/or other activity. Triggered signals can include HEALTHY, RST, Power Off,
> +or Fault depending on the chip configuration. The driver reports values as lcrit
> +or crit if exceeding the limits triggers RST, Power Off, or Fault, and as min or
> +max otherwise. For details please see the SMM665 datasheet.
> +
> +For SMM465 and SMM764, values for Channel E and F are reported but undefined.
> +
> +in1_input		12V input voltage (mV)
> +in2_input		3.3V (VDD) input voltage (mV)
> +in3_input		Channel A voltage (mV)
> +in4_input		Channel B voltage (mV)
> +in5_input		Channel C voltage (mV)
> +in6_input		Channel D voltage (mV)
> +in7_input		Channel E voltage (mV)
> +in8_input		Channel F voltage (mV)
> +in9_input		AIN1 voltage (mV)
> +in10_input		AIN2 voltage (mV)
> +
> +in1_min			12v input minimum voltage (mV)
> +in2_min			3.3V (VDD) input minimum voltage (mV)
> +in3_min			Channel A minimum voltage (mV)
> +in4_min			Channel B minimum voltage (mV)
> +in5_min			Channel C minimum voltage (mV)
> +in6_min			Channel D minimum voltage (mV)
> +in7_min			Channel E minimum voltage (mV)
> +in8_min			Channel F minimum voltage (mV)
> +in9_min			AIN1 minimum voltage (mV)
> +in10_min		AIN2 minimum voltage (mV)
> +
> +in1_max			12v input maximum voltage (mV)
> +in2_max			3.3V (VDD) input maximum voltage (mV)
> +in3_max			Channel A maximum voltage (mV)
> +in4_max			Channel B maximum voltage (mV)
> +in5_max			Channel C maximum voltage (mV)
> +in6_max			Channel D maximum voltage (mV)
> +in7_max			Channel E maximum voltage (mV)
> +in8_max			Channel F maximum voltage (mV)
> +in9_max			AIN1 maximum voltage (mV)
> +in10_max		AIN2 maximum voltage (mV)
> +
> +in1_lcrit		12v input critical minimum voltage (mV)
> +in2_lcrit		3.3V (VDD) input critical minimum voltage (mV)
> +in3_lcrit		Channel A critical minimum voltage (mV)
> +in4_lcrit		Channel B critical minimum voltage (mV)
> +in5_lcrit		Channel C critical minimum voltage (mV)
> +in6_lcrit		Channel D critical minimum voltage (mV)
> +in7_lcrit		Channel E critical minimum voltage (mV)
> +in8_lcrit		Channel F critical minimum voltage (mV)
> +in9_lcrit		AIN1 critical minimum voltage (mV)
> +in10_lcrit		AIN2 critical minimum voltage (mV)
> +
> +in1_crit		12v input critical maximum voltage (mV)
> +in2_crit		3.3V (VDD) input critical maximum voltage (mV)
> +in3_crit		Channel A critical maximum voltage (mV)
> +in4_crit		Channel B critical maximum voltage (mV)
> +in5_crit		Channel C critical maximum voltage (mV)
> +in6_crit		Channel D critical maximum voltage (mV)
> +in7_crit		Channel E critical maximum voltage (mV)
> +in8_crit		Channel F critical maximum voltage (mV)
> +in9_crit		AIN1 critical maximum voltage (mV)
> +in10_crit		AIN2 critical maximum voltage (mV)
> +
> +in1_fault		12v input fault
> +in2_fault		3.3V (VDD) input fault
> +in3_fault		Channel A fault
> +in4_fault		Channel B fault
> +in5_fault		Channel C fault
> +in6_fault		Channel D fault
> +in7_fault		Channel E fault
> +in8_fault		Channel F fault
> +in9_fault		AIN1 fault
> +in10_fault		AIN2 fault
> +
> +temp1_input		Chip tempererature
> +temp1_min		Mimimum chip tempererature
> +temp1_max		Maximum chip tempererature
> +temp1_crit		Critical chip tempererature
> +temp1_fault		Temperature fault

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