hwmon: (vt8231) Fix multi-line comments
Cc: Roger Lucas <vt8231@hiddenengine.co.uk> Acked-by: Roger Lucas <vt8231@hiddenengine.co.uk> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Guenter Roeck
Guenter Roeck
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9ed5bc24fa
commit
61ba031841
@ -1,28 +1,29 @@
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/*
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vt8231.c - Part of lm_sensors, Linux kernel modules
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for hardware monitoring
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* vt8231.c - Part of lm_sensors, Linux kernel modules
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* for hardware monitoring
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*
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* Copyright (c) 2005 Roger Lucas <vt8231@hiddenengine.co.uk>
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* Copyright (c) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
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* Aaron M. Marsh <amarsh@sdf.lonestar.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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Copyright (c) 2005 Roger Lucas <vt8231@hiddenengine.co.uk>
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Copyright (c) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
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Aaron M. Marsh <amarsh@sdf.lonestar.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* Supports VIA VT8231 South Bridge embedded sensors
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*/
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/*
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* Supports VIA VT8231 South Bridge embedded sensors
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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@ -50,26 +51,27 @@ static struct platform_device *pdev;
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#define VT8231_BASE_REG 0x70
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#define VT8231_ENABLE_REG 0x74
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/* The VT8231 registers
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The reset value for the input channel configuration is used (Reg 0x4A=0x07)
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which sets the selected inputs marked with '*' below if multiple options are
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possible:
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Voltage Mode Temperature Mode
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Sensor Linux Id Linux Id VIA Id
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-------- -------- -------- ------
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CPU Diode N/A temp1 0
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UIC1 in0 temp2 * 1
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UIC2 in1 * temp3 2
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UIC3 in2 * temp4 3
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UIC4 in3 * temp5 4
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UIC5 in4 * temp6 5
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3.3V in5 N/A
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Note that the BIOS may set the configuration register to a different value
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to match the motherboard configuration.
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*/
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/*
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* The VT8231 registers
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*
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* The reset value for the input channel configuration is used (Reg 0x4A=0x07)
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* which sets the selected inputs marked with '*' below if multiple options are
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* possible:
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*
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* Voltage Mode Temperature Mode
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* Sensor Linux Id Linux Id VIA Id
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* -------- -------- -------- ------
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* CPU Diode N/A temp1 0
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* UIC1 in0 temp2 * 1
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* UIC2 in1 * temp3 2
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* UIC3 in2 * temp4 3
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* UIC4 in3 * temp5 4
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* UIC5 in4 * temp6 5
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* 3.3V in5 N/A
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*
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* Note that the BIOS may set the configuration register to a different value
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* to match the motherboard configuration.
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*/
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/* fans numbered 0-1 */
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#define VT8231_REG_FAN_MIN(nr) (0x3b + (nr))
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@ -81,13 +83,14 @@ static const u8 regvolt[] = { 0x21, 0x22, 0x23, 0x24, 0x25, 0x26 };
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static const u8 regvoltmax[] = { 0x3d, 0x2b, 0x2d, 0x2f, 0x31, 0x33 };
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static const u8 regvoltmin[] = { 0x3e, 0x2c, 0x2e, 0x30, 0x32, 0x34 };
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/* Temperatures are numbered 1-6 according to the Linux kernel specification.
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**
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** In the VIA datasheet, however, the temperatures are numbered from zero.
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** Since it is important that this driver can easily be compared to the VIA
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** datasheet, we will use the VIA numbering within this driver and map the
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** kernel sysfs device name to the VIA number in the sysfs callback.
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*/
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/*
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* Temperatures are numbered 1-6 according to the Linux kernel specification.
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*
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* In the VIA datasheet, however, the temperatures are numbered from zero.
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* Since it is important that this driver can easily be compared to the VIA
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* datasheet, we will use the VIA numbering within this driver and map the
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* kernel sysfs device name to the VIA number in the sysfs callback.
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*/
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#define VT8231_REG_TEMP_LOW01 0x49
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#define VT8231_REG_TEMP_LOW25 0x4d
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@ -108,9 +111,10 @@ static const u8 regtempmin[] = { 0x3a, 0x3e, 0x2c, 0x2e, 0x30, 0x32 };
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#define VT8231_REG_TEMP1_CONFIG 0x4b
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#define VT8231_REG_TEMP2_CONFIG 0x4c
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/* temps 0-5 as numbered in VIA datasheet - see later for mapping to Linux
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** numbering
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*/
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/*
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* temps 0-5 as numbered in VIA datasheet - see later for mapping to Linux
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* numbering
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*/
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#define ISTEMP(i, ch_config) ((i) == 0 ? 1 : \
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((ch_config) >> ((i)+1)) & 0x01)
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/* voltages 0-5 */
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@ -119,24 +123,26 @@ static const u8 regtempmin[] = { 0x3a, 0x3e, 0x2c, 0x2e, 0x30, 0x32 };
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#define DIV_FROM_REG(val) (1 << (val))
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/* NB The values returned here are NOT temperatures. The calibration curves
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** for the thermistor curves are board-specific and must go in the
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** sensors.conf file. Temperature sensors are actually ten bits, but the
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** VIA datasheet only considers the 8 MSBs obtained from the regtemp[]
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** register. The temperature value returned should have a magnitude of 3,
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** so we use the VIA scaling as the "true" scaling and use the remaining 2
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** LSBs as fractional precision.
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**
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** All the on-chip hardware temperature comparisons for the alarms are only
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** 8-bits wide, and compare against the 8 MSBs of the temperature. The bits
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** in the registers VT8231_REG_TEMP_LOW01 and VT8231_REG_TEMP_LOW25 are
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** ignored.
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*/
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/*
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* NB The values returned here are NOT temperatures. The calibration curves
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* for the thermistor curves are board-specific and must go in the
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* sensors.conf file. Temperature sensors are actually ten bits, but the
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* VIA datasheet only considers the 8 MSBs obtained from the regtemp[]
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* register. The temperature value returned should have a magnitude of 3,
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* so we use the VIA scaling as the "true" scaling and use the remaining 2
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* LSBs as fractional precision.
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*
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* All the on-chip hardware temperature comparisons for the alarms are only
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* 8-bits wide, and compare against the 8 MSBs of the temperature. The bits
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* in the registers VT8231_REG_TEMP_LOW01 and VT8231_REG_TEMP_LOW25 are
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* ignored.
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*/
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/******** FAN RPM CONVERSIONS ********
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** This chip saturates back at 0, not at 255 like many the other chips.
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** So, 0 means 0 RPM
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*/
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/*
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****** FAN RPM CONVERSIONS ********
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* This chip saturates back at 0, not at 255 like many the other chips.
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* So, 0 means 0 RPM
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*/
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static inline u8 FAN_TO_REG(long rpm, int div)
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{
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if (rpm == 0)
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@ -463,9 +469,10 @@ static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
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return count;
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}
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/* Note that these map the Linux temperature sensor numbering (1-6) to the VIA
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** temperature sensor numbering (0-5)
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*/
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/*
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* Note that these map the Linux temperature sensor numbering (1-6) to the VIA
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* temperature sensor numbering (0-5)
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*/
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#define define_temperature_sysfs(offset) \
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static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
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show_temp, NULL, offset - 1); \
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@ -1032,13 +1039,16 @@ static int __devinit vt8231_pci_probe(struct pci_dev *dev,
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if (vt8231_device_add(address))
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goto exit_unregister;
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/* Always return failure here. This is to allow other drivers to bind
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/*
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* Always return failure here. This is to allow other drivers to bind
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* to this pci device. We don't really want to have control over the
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* pci device, we only wanted to read as few register values from it.
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*/
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/* We do, however, mark ourselves as using the PCI device to stop it
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getting unloaded. */
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/*
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* We do, however, mark ourselves as using the PCI device to stop it
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* getting unloaded.
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*/
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s_bridge = pci_dev_get(dev);
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return -ENODEV;
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