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-rw-r--r--drivers/hwmon/via686a.c470
1 files changed, 263 insertions, 207 deletions
diff --git a/drivers/hwmon/via686a.c b/drivers/hwmon/via686a.c
index f397ce7ad59..babd732b4e1 100644
--- a/drivers/hwmon/via686a.c
+++ b/drivers/hwmon/via686a.c
@@ -1,34 +1,37 @@
/*
- via686a.c - Part of lm_sensors, Linux kernel modules
- for hardware monitoring
-
- Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>,
- Kyösti Mälkki <kmalkki@cc.hut.fi>,
- Mark Studebaker <mdsxyz123@yahoo.com>,
- and Bob Dougherty <bobd@stanford.edu>
- (Some conversion-factor data were contributed by Jonathan Teh Soon Yew
- <j.teh@iname.com> and Alex van Kaam <darkside@chello.nl>.)
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
+ * via686a.c - Part of lm_sensors, Linux kernel modules
+ * for hardware monitoring
+ *
+ * Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>,
+ * Kyösti Mälkki <kmalkki@cc.hut.fi>,
+ * Mark Studebaker <mdsxyz123@yahoo.com>,
+ * and Bob Dougherty <bobd@stanford.edu>
+ *
+ * (Some conversion-factor data were contributed by Jonathan Teh Soon Yew
+ * <j.teh@iname.com> and Alex van Kaam <darkside@chello.nl>.)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
/*
- Supports the Via VT82C686A, VT82C686B south bridges.
- Reports all as a 686A.
- Warning - only supports a single device.
-*/
+ * Supports the Via VT82C686A, VT82C686B south bridges.
+ * Reports all as a 686A.
+ * Warning - only supports a single device.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/slab.h>
@@ -45,8 +48,10 @@
#include <linux/io.h>
-/* If force_addr is set to anything different from 0, we forcibly enable
- the device at the given address. */
+/*
+ * If force_addr is set to anything different from 0, we forcibly enable
+ * the device at the given address.
+ */
static unsigned short force_addr;
module_param(force_addr, ushort, 0);
MODULE_PARM_DESC(force_addr,
@@ -55,9 +60,9 @@ MODULE_PARM_DESC(force_addr,
static struct platform_device *pdev;
/*
- The Via 686a southbridge has a LM78-like chip integrated on the same IC.
- This driver is a customized copy of lm78.c
-*/
+ * The Via 686a southbridge has a LM78-like chip integrated on the same IC.
+ * This driver is a customized copy of lm78.c
+ */
/* Many VIA686A constants specified below */
@@ -89,117 +94,127 @@ static const u8 VIA686A_REG_TEMP_HYST[] = { 0x3a, 0x3e, 0x1e };
#define VIA686A_REG_ALARM2 0x42
#define VIA686A_REG_FANDIV 0x47
#define VIA686A_REG_CONFIG 0x40
-/* The following register sets temp interrupt mode (bits 1-0 for temp1,
- 3-2 for temp2, 5-4 for temp3). Modes are:
- 00 interrupt stays as long as value is out-of-range
- 01 interrupt is cleared once register is read (default)
- 10 comparator mode- like 00, but ignores hysteresis
- 11 same as 00 */
+/*
+ * The following register sets temp interrupt mode (bits 1-0 for temp1,
+ * 3-2 for temp2, 5-4 for temp3). Modes are:
+ * 00 interrupt stays as long as value is out-of-range
+ * 01 interrupt is cleared once register is read (default)
+ * 10 comparator mode- like 00, but ignores hysteresis
+ * 11 same as 00
+ */
#define VIA686A_REG_TEMP_MODE 0x4b
/* We'll just assume that you want to set all 3 simultaneously: */
#define VIA686A_TEMP_MODE_MASK 0x3F
#define VIA686A_TEMP_MODE_CONTINUOUS 0x00
-/* Conversions. Limit checking is only done on the TO_REG
- variants.
-
-********* VOLTAGE CONVERSIONS (Bob Dougherty) ********
- From HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew):
- voltagefactor[0]=1.25/2628; (2628/1.25=2102.4) // Vccp
- voltagefactor[1]=1.25/2628; (2628/1.25=2102.4) // +2.5V
- voltagefactor[2]=1.67/2628; (2628/1.67=1573.7) // +3.3V
- voltagefactor[3]=2.6/2628; (2628/2.60=1010.8) // +5V
- voltagefactor[4]=6.3/2628; (2628/6.30=417.14) // +12V
- in[i]=(data[i+2]*25.0+133)*voltagefactor[i];
- That is:
- volts = (25*regVal+133)*factor
- regVal = (volts/factor-133)/25
- (These conversions were contributed by Jonathan Teh Soon Yew
- <j.teh@iname.com>) */
-static inline u8 IN_TO_REG(long val, int inNum)
+/*
+ * Conversions. Limit checking is only done on the TO_REG
+ * variants.
+ *
+ ******** VOLTAGE CONVERSIONS (Bob Dougherty) ********
+ * From HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew):
+ * voltagefactor[0]=1.25/2628; (2628/1.25=2102.4) // Vccp
+ * voltagefactor[1]=1.25/2628; (2628/1.25=2102.4) // +2.5V
+ * voltagefactor[2]=1.67/2628; (2628/1.67=1573.7) // +3.3V
+ * voltagefactor[3]=2.6/2628; (2628/2.60=1010.8) // +5V
+ * voltagefactor[4]=6.3/2628; (2628/6.30=417.14) // +12V
+ * in[i]=(data[i+2]*25.0+133)*voltagefactor[i];
+ * That is:
+ * volts = (25*regVal+133)*factor
+ * regVal = (volts/factor-133)/25
+ * (These conversions were contributed by Jonathan Teh Soon Yew
+ * <j.teh@iname.com>)
+ */
+static inline u8 IN_TO_REG(long val, int in_num)
{
- /* To avoid floating point, we multiply constants by 10 (100 for +12V).
- Rounding is done (120500 is actually 133000 - 12500).
- Remember that val is expressed in 0.001V/bit, which is why we divide
- by an additional 10000 (100000 for +12V): 1000 for val and 10 (100)
- for the constants. */
- if (inNum <= 1)
- return (u8)
- SENSORS_LIMIT((val * 21024 - 1205000) / 250000, 0, 255);
- else if (inNum == 2)
- return (u8)
- SENSORS_LIMIT((val * 15737 - 1205000) / 250000, 0, 255);
- else if (inNum == 3)
- return (u8)
- SENSORS_LIMIT((val * 10108 - 1205000) / 250000, 0, 255);
+ /*
+ * To avoid floating point, we multiply constants by 10 (100 for +12V).
+ * Rounding is done (120500 is actually 133000 - 12500).
+ * Remember that val is expressed in 0.001V/bit, which is why we divide
+ * by an additional 10000 (100000 for +12V): 1000 for val and 10 (100)
+ * for the constants.
+ */
+ if (in_num <= 1)
+ return (u8) clamp_val((val * 21024 - 1205000) / 250000, 0, 255);
+ else if (in_num == 2)
+ return (u8) clamp_val((val * 15737 - 1205000) / 250000, 0, 255);
+ else if (in_num == 3)
+ return (u8) clamp_val((val * 10108 - 1205000) / 250000, 0, 255);
else
- return (u8)
- SENSORS_LIMIT((val * 41714 - 12050000) / 2500000, 0, 255);
+ return (u8) clamp_val((val * 41714 - 12050000) / 2500000, 0,
+ 255);
}
-static inline long IN_FROM_REG(u8 val, int inNum)
+static inline long IN_FROM_REG(u8 val, int in_num)
{
- /* To avoid floating point, we multiply constants by 10 (100 for +12V).
- We also multiply them by 1000 because we want 0.001V/bit for the
- output value. Rounding is done. */
- if (inNum <= 1)
+ /*
+ * To avoid floating point, we multiply constants by 10 (100 for +12V).
+ * We also multiply them by 1000 because we want 0.001V/bit for the
+ * output value. Rounding is done.
+ */
+ if (in_num <= 1)
return (long) ((250000 * val + 1330000 + 21024 / 2) / 21024);
- else if (inNum == 2)
+ else if (in_num == 2)
return (long) ((250000 * val + 1330000 + 15737 / 2) / 15737);
- else if (inNum == 3)
+ else if (in_num == 3)
return (long) ((250000 * val + 1330000 + 10108 / 2) / 10108);
else
return (long) ((2500000 * val + 13300000 + 41714 / 2) / 41714);
}
/********* FAN RPM CONVERSIONS ********/
-/* Higher register values = slower fans (the fan's strobe gates a counter).
- But this chip saturates back at 0, not at 255 like all the other chips.
- So, 0 means 0 RPM */
+/*
+ * Higher register values = slower fans (the fan's strobe gates a counter).
+ * But this chip saturates back at 0, not at 255 like all the other chips.
+ * So, 0 means 0 RPM
+ */
static inline u8 FAN_TO_REG(long rpm, int div)
{
if (rpm == 0)
return 0;
- rpm = SENSORS_LIMIT(rpm, 1, 1000000);
- return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 255);
+ rpm = clamp_val(rpm, 1, 1000000);
+ return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 255);
}
-#define FAN_FROM_REG(val,div) ((val)==0?0:(val)==255?0:1350000/((val)*(div)))
+#define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (val) == 255 ? 0 : 1350000 / \
+ ((val) * (div)))
/******** TEMP CONVERSIONS (Bob Dougherty) *********/
-/* linear fits from HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew)
- if(temp<169)
- return double(temp)*0.427-32.08;
- else if(temp>=169 && temp<=202)
- return double(temp)*0.582-58.16;
- else
- return double(temp)*0.924-127.33;
-
- A fifth-order polynomial fits the unofficial data (provided by Alex van
- Kaam <darkside@chello.nl>) a bit better. It also give more reasonable
- numbers on my machine (ie. they agree with what my BIOS tells me).
- Here's the fifth-order fit to the 8-bit data:
- temp = 1.625093e-10*val^5 - 1.001632e-07*val^4 + 2.457653e-05*val^3 -
- 2.967619e-03*val^2 + 2.175144e-01*val - 7.090067e+0.
-
- (2000-10-25- RFD: thanks to Uwe Andersen <uandersen@mayah.com> for
- finding my typos in this formula!)
-
- Alas, none of the elegant function-fit solutions will work because we
- aren't allowed to use floating point in the kernel and doing it with
- integers doesn't provide enough precision. So we'll do boring old
- look-up table stuff. The unofficial data (see below) have effectively
- 7-bit resolution (they are rounded to the nearest degree). I'm assuming
- that the transfer function of the device is monotonic and smooth, so a
- smooth function fit to the data will allow us to get better precision.
- I used the 5th-order poly fit described above and solved for
- VIA register values 0-255. I *10 before rounding, so we get tenth-degree
- precision. (I could have done all 1024 values for our 10-bit readings,
- but the function is very linear in the useful range (0-80 deg C), so
- we'll just use linear interpolation for 10-bit readings.) So, tempLUT
- is the temp at via register values 0-255: */
-static const s16 tempLUT[] =
-{ -709, -688, -667, -646, -627, -607, -589, -570, -553, -536, -519,
+/*
+ * linear fits from HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew)
+ * if(temp<169)
+ * return double(temp)*0.427-32.08;
+ * else if(temp>=169 && temp<=202)
+ * return double(temp)*0.582-58.16;
+ * else
+ * return double(temp)*0.924-127.33;
+ *
+ * A fifth-order polynomial fits the unofficial data (provided by Alex van
+ * Kaam <darkside@chello.nl>) a bit better. It also give more reasonable
+ * numbers on my machine (ie. they agree with what my BIOS tells me).
+ * Here's the fifth-order fit to the 8-bit data:
+ * temp = 1.625093e-10*val^5 - 1.001632e-07*val^4 + 2.457653e-05*val^3 -
+ * 2.967619e-03*val^2 + 2.175144e-01*val - 7.090067e+0.
+ *
+ * (2000-10-25- RFD: thanks to Uwe Andersen <uandersen@mayah.com> for
+ * finding my typos in this formula!)
+ *
+ * Alas, none of the elegant function-fit solutions will work because we
+ * aren't allowed to use floating point in the kernel and doing it with
+ * integers doesn't provide enough precision. So we'll do boring old
+ * look-up table stuff. The unofficial data (see below) have effectively
+ * 7-bit resolution (they are rounded to the nearest degree). I'm assuming
+ * that the transfer function of the device is monotonic and smooth, so a
+ * smooth function fit to the data will allow us to get better precision.
+ * I used the 5th-order poly fit described above and solved for
+ * VIA register values 0-255. I *10 before rounding, so we get tenth-degree
+ * precision. (I could have done all 1024 values for our 10-bit readings,
+ * but the function is very linear in the useful range (0-80 deg C), so
+ * we'll just use linear interpolation for 10-bit readings.) So, temp_lut
+ * is the temp at via register values 0-255:
+ */
+static const s16 temp_lut[] = {
+ -709, -688, -667, -646, -627, -607, -589, -570, -553, -536, -519,
-503, -487, -471, -456, -442, -428, -414, -400, -387, -375,
-362, -350, -339, -327, -316, -305, -295, -285, -275, -265,
-255, -246, -237, -229, -220, -212, -204, -196, -188, -180,
@@ -223,29 +238,31 @@ static const s16 tempLUT[] =
1276, 1301, 1326, 1352, 1378, 1406, 1434, 1462
};
-/* the original LUT values from Alex van Kaam <darkside@chello.nl>
- (for via register values 12-240):
-{-50,-49,-47,-45,-43,-41,-39,-38,-37,-35,-34,-33,-32,-31,
--30,-29,-28,-27,-26,-25,-24,-24,-23,-22,-21,-20,-20,-19,-18,-17,-17,-16,-15,
--15,-14,-14,-13,-12,-12,-11,-11,-10,-9,-9,-8,-8,-7,-7,-6,-6,-5,-5,-4,-4,-3,
--3,-2,-2,-1,-1,0,0,1,1,1,3,3,3,4,4,4,5,5,5,6,6,7,7,8,8,9,9,9,10,10,11,11,12,
-12,12,13,13,13,14,14,15,15,16,16,16,17,17,18,18,19,19,20,20,21,21,21,22,22,
-22,23,23,24,24,25,25,26,26,26,27,27,27,28,28,29,29,30,30,30,31,31,32,32,33,
-33,34,34,35,35,35,36,36,37,37,38,38,39,39,40,40,41,41,42,42,43,43,44,44,45,
-45,46,46,47,48,48,49,49,50,51,51,52,52,53,53,54,55,55,56,57,57,58,59,59,60,
-61,62,62,63,64,65,66,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,83,84,
-85,86,88,89,91,92,94,96,97,99,101,103,105,107,109,110};
-
-
- Here's the reverse LUT. I got it by doing a 6-th order poly fit (needed
- an extra term for a good fit to these inverse data!) and then
- solving for each temp value from -50 to 110 (the useable range for
- this chip). Here's the fit:
- viaRegVal = -1.160370e-10*val^6 +3.193693e-08*val^5 - 1.464447e-06*val^4
- - 2.525453e-04*val^3 + 1.424593e-02*val^2 + 2.148941e+00*val +7.275808e+01)
- Note that n=161: */
-static const u8 viaLUT[] =
-{ 12, 12, 13, 14, 14, 15, 16, 16, 17, 18, 18, 19, 20, 20, 21, 22, 23,
+/*
+ * the original LUT values from Alex van Kaam <darkside@chello.nl>
+ * (for via register values 12-240):
+ * {-50,-49,-47,-45,-43,-41,-39,-38,-37,-35,-34,-33,-32,-31,
+ * -30,-29,-28,-27,-26,-25,-24,-24,-23,-22,-21,-20,-20,-19,-18,-17,-17,-16,-15,
+ * -15,-14,-14,-13,-12,-12,-11,-11,-10,-9,-9,-8,-8,-7,-7,-6,-6,-5,-5,-4,-4,-3,
+ * -3,-2,-2,-1,-1,0,0,1,1,1,3,3,3,4,4,4,5,5,5,6,6,7,7,8,8,9,9,9,10,10,11,11,12,
+ * 12,12,13,13,13,14,14,15,15,16,16,16,17,17,18,18,19,19,20,20,21,21,21,22,22,
+ * 22,23,23,24,24,25,25,26,26,26,27,27,27,28,28,29,29,30,30,30,31,31,32,32,33,
+ * 33,34,34,35,35,35,36,36,37,37,38,38,39,39,40,40,41,41,42,42,43,43,44,44,45,
+ * 45,46,46,47,48,48,49,49,50,51,51,52,52,53,53,54,55,55,56,57,57,58,59,59,60,
+ * 61,62,62,63,64,65,66,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,83,84,
+ * 85,86,88,89,91,92,94,96,97,99,101,103,105,107,109,110};
+ *
+ *
+ * Here's the reverse LUT. I got it by doing a 6-th order poly fit (needed
+ * an extra term for a good fit to these inverse data!) and then
+ * solving for each temp value from -50 to 110 (the useable range for
+ * this chip). Here's the fit:
+ * viaRegVal = -1.160370e-10*val^6 +3.193693e-08*val^5 - 1.464447e-06*val^4
+ * - 2.525453e-04*val^3 + 1.424593e-02*val^2 + 2.148941e+00*val +7.275808e+01)
+ * Note that n=161:
+ */
+static const u8 via_lut[] = {
+ 12, 12, 13, 14, 14, 15, 16, 16, 17, 18, 18, 19, 20, 20, 21, 22, 23,
23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 39, 40,
41, 43, 45, 46, 48, 49, 51, 53, 55, 57, 59, 60, 62, 64, 66,
69, 71, 73, 75, 77, 79, 82, 84, 86, 88, 91, 93, 95, 98, 100,
@@ -260,38 +277,42 @@ static const u8 viaLUT[] =
239, 240
};
-/* Converting temps to (8-bit) hyst and over registers
- No interpolation here.
- The +50 is because the temps start at -50 */
+/*
+ * Converting temps to (8-bit) hyst and over registers
+ * No interpolation here.
+ * The +50 is because the temps start at -50
+ */
static inline u8 TEMP_TO_REG(long val)
{
- return viaLUT[val <= -50000 ? 0 : val >= 110000 ? 160 :
+ return via_lut[val <= -50000 ? 0 : val >= 110000 ? 160 :
(val < 0 ? val - 500 : val + 500) / 1000 + 50];
}
/* for 8-bit temperature hyst and over registers */
-#define TEMP_FROM_REG(val) ((long)tempLUT[val] * 100)
+#define TEMP_FROM_REG(val) ((long)temp_lut[val] * 100)
/* for 10-bit temperature readings */
static inline long TEMP_FROM_REG10(u16 val)
{
- u16 eightBits = val >> 2;
- u16 twoBits = val & 3;
+ u16 eight_bits = val >> 2;
+ u16 two_bits = val & 3;
/* no interpolation for these */
- if (twoBits == 0 || eightBits == 255)
- return TEMP_FROM_REG(eightBits);
+ if (two_bits == 0 || eight_bits == 255)
+ return TEMP_FROM_REG(eight_bits);
/* do some linear interpolation */
- return (tempLUT[eightBits] * (4 - twoBits) +
- tempLUT[eightBits + 1] * twoBits) * 25;
+ return (temp_lut[eight_bits] * (4 - two_bits) +
+ temp_lut[eight_bits + 1] * two_bits) * 25;
}
#define DIV_FROM_REG(val) (1 << (val))
-#define DIV_TO_REG(val) ((val)==8?3:(val)==4?2:(val)==1?0:1)
+#define DIV_TO_REG(val) ((val) == 8 ? 3 : (val) == 4 ? 2 : (val) == 1 ? 0 : 1)
-/* For each registered chip, we need to keep some data in memory.
- The structure is dynamically allocated. */
+/*
+ * For each registered chip, we need to keep some data in memory.
+ * The structure is dynamically allocated.
+ */
struct via686a_data {
unsigned short addr;
const char *name;
@@ -315,7 +336,7 @@ struct via686a_data {
static struct pci_dev *s_bridge; /* pointer to the (only) via686a */
static int via686a_probe(struct platform_device *pdev);
-static int __devexit via686a_remove(struct platform_device *pdev);
+static int via686a_remove(struct platform_device *pdev);
static inline int via686a_read_value(struct via686a_data *data, u8 reg)
{
@@ -363,7 +384,12 @@ static ssize_t set_in_min(struct device *dev, struct device_attribute *da,
struct via686a_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
int nr = attr->index;
- unsigned long val = simple_strtoul(buf, NULL, 10);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
data->in_min[nr] = IN_TO_REG(val, nr);
@@ -377,7 +403,12 @@ static ssize_t set_in_max(struct device *dev, struct device_attribute *da,
struct via686a_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
int nr = attr->index;
- unsigned long val = simple_strtoul(buf, NULL, 10);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
data->in_max[nr] = IN_TO_REG(val, nr);
@@ -427,7 +458,12 @@ static ssize_t set_temp_over(struct device *dev, struct device_attribute *da,
struct via686a_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
int nr = attr->index;
- int val = simple_strtol(buf, NULL, 10);
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
data->temp_over[nr] = TEMP_TO_REG(val);
@@ -441,7 +477,12 @@ static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *da,
struct via686a_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
int nr = attr->index;
- int val = simple_strtol(buf, NULL, 10);
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
data->temp_hyst[nr] = TEMP_TO_REG(val);
@@ -469,7 +510,7 @@ static ssize_t show_fan(struct device *dev, struct device_attribute *da,
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
int nr = attr->index;
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
- DIV_FROM_REG(data->fan_div[nr])) );
+ DIV_FROM_REG(data->fan_div[nr])));
}
static ssize_t show_fan_min(struct device *dev, struct device_attribute *da,
char *buf) {
@@ -477,21 +518,27 @@ static ssize_t show_fan_min(struct device *dev, struct device_attribute *da,
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
int nr = attr->index;
return sprintf(buf, "%d\n",
- FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])) );
+ FAN_FROM_REG(data->fan_min[nr],
+ DIV_FROM_REG(data->fan_div[nr])));
}
static ssize_t show_fan_div(struct device *dev, struct device_attribute *da,
char *buf) {
struct via686a_data *data = via686a_update_device(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
int nr = attr->index;
- return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) );
+ return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
}
static ssize_t set_fan_min(struct device *dev, struct device_attribute *da,
const char *buf, size_t count) {
struct via686a_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
int nr = attr->index;
- int val = simple_strtol(buf, NULL, 10);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
@@ -504,8 +551,13 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *da,
struct via686a_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
int nr = attr->index;
- int val = simple_strtol(buf, NULL, 10);
int old;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
old = via686a_read_value(data, VIA686A_REG_FANDIV);
@@ -528,10 +580,13 @@ show_fan_offset(1);
show_fan_offset(2);
/* Alarms */
-static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) {
+static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
struct via686a_data *data = via686a_update_device(dev);
return sprintf(buf, "%u\n", data->alarms);
}
+
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
@@ -619,12 +674,12 @@ static struct platform_driver via686a_driver = {
.name = "via686a",
},
.probe = via686a_probe,
- .remove = __devexit_p(via686a_remove),
+ .remove = via686a_remove,
};
/* This is called when the module is loaded */
-static int __devinit via686a_probe(struct platform_device *pdev)
+static int via686a_probe(struct platform_device *pdev)
{
struct via686a_data *data;
struct resource *res;
@@ -632,17 +687,17 @@ static int __devinit via686a_probe(struct platform_device *pdev)
/* Reserve the ISA region */
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- if (!request_region(res->start, VIA686A_EXTENT,
- via686a_driver.driver.name)) {
+ if (!devm_request_region(&pdev->dev, res->start, VIA686A_EXTENT,
+ via686a_driver.driver.name)) {
dev_err(&pdev->dev, "Region 0x%lx-0x%lx already in use!\n",
(unsigned long)res->start, (unsigned long)res->end);
return -ENODEV;
}
- if (!(data = kzalloc(sizeof(struct via686a_data), GFP_KERNEL))) {
- err = -ENOMEM;
- goto exit_release;
- }
+ data = devm_kzalloc(&pdev->dev, sizeof(struct via686a_data),
+ GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
platform_set_drvdata(pdev, data);
data->addr = res->start;
@@ -653,8 +708,9 @@ static int __devinit via686a_probe(struct platform_device *pdev)
via686a_init_device(data);
/* Register sysfs hooks */
- if ((err = sysfs_create_group(&pdev->dev.kobj, &via686a_group)))
- goto exit_free;
+ err = sysfs_create_group(&pdev->dev.kobj, &via686a_group);
+ if (err)
+ return err;
data->hwmon_dev = hwmon_device_register(&pdev->dev);
if (IS_ERR(data->hwmon_dev)) {
@@ -666,28 +722,27 @@ static int __devinit via686a_probe(struct platform_device *pdev)
exit_remove_files:
sysfs_remove_group(&pdev->dev.kobj, &via686a_group);
-exit_free:
- kfree(data);
-exit_release:
- release_region(res->start, VIA686A_EXTENT);
return err;
}
-static int __devexit via686a_remove(struct platform_device *pdev)
+static int via686a_remove(struct platform_device *pdev)
{
struct via686a_data *data = platform_get_drvdata(pdev);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&pdev->dev.kobj, &via686a_group);
- release_region(data->addr, VIA686A_EXTENT);
- platform_set_drvdata(pdev, NULL);
- kfree(data);
-
return 0;
}
-static void __devinit via686a_init_device(struct via686a_data *data)
+static void via686a_update_fan_div(struct via686a_data *data)
+{
+ int reg = via686a_read_value(data, VIA686A_REG_FANDIV);
+ data->fan_div[0] = (reg >> 4) & 0x03;
+ data->fan_div[1] = reg >> 6;
+}
+
+static void via686a_init_device(struct via686a_data *data)
{
u8 reg;
@@ -700,6 +755,9 @@ static void __devinit via686a_init_device(struct via686a_data *data)
via686a_write_value(data, VIA686A_REG_TEMP_MODE,
(reg & ~VIA686A_TEMP_MODE_MASK)
| VIA686A_TEMP_MODE_CONTINUOUS);
+
+ /* Pre-read fan clock divisor values */
+ via686a_update_fan_div(data);
}
static struct via686a_data *via686a_update_device(struct device *dev)
@@ -736,10 +794,11 @@ static struct via686a_data *via686a_update_device(struct device *dev)
via686a_read_value(data,
VIA686A_REG_TEMP_HYST[i]);
}
- /* add in lower 2 bits
- temp1 uses bits 7-6 of VIA686A_REG_TEMP_LOW1
- temp2 uses bits 5-4 of VIA686A_REG_TEMP_LOW23
- temp3 uses bits 7-6 of VIA686A_REG_TEMP_LOW23
+ /*
+ * add in lower 2 bits
+ * temp1 uses bits 7-6 of VIA686A_REG_TEMP_LOW1
+ * temp2 uses bits 5-4 of VIA686A_REG_TEMP_LOW23
+ * temp3 uses bits 7-6 of VIA686A_REG_TEMP_LOW23
*/
data->temp[0] |= (via686a_read_value(data,
VIA686A_REG_TEMP_LOW1)
@@ -751,9 +810,7 @@ static struct via686a_data *via686a_update_device(struct device *dev)
(via686a_read_value(data, VIA686A_REG_TEMP_LOW23) &
0xc0) >> 6;
- i = via686a_read_value(data, VIA686A_REG_FANDIV);
- data->fan_div[0] = (i >> 4) & 0x03;
- data->fan_div[1] = i >> 6;
+ via686a_update_fan_div(data);
data->alarms =
via686a_read_value(data,
VIA686A_REG_ALARM1) |
@@ -769,12 +826,11 @@ static struct via686a_data *via686a_update_device(struct device *dev)
static const struct pci_device_id via686a_pci_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4) },
- { 0, }
+ { }
};
-
MODULE_DEVICE_TABLE(pci, via686a_pci_ids);
-static int __devinit via686a_device_add(unsigned short address)
+static int via686a_device_add(unsigned short address)
{
struct resource res = {
.start = address,
@@ -791,21 +847,19 @@ static int __devinit via686a_device_add(unsigned short address)
pdev = platform_device_alloc("via686a", address);
if (!pdev) {
err = -ENOMEM;
- printk(KERN_ERR "via686a: Device allocation failed\n");
+ pr_err("Device allocation failed\n");
goto exit;
}
err = platform_device_add_resources(pdev, &res, 1);
if (err) {
- printk(KERN_ERR "via686a: Device resource addition failed "
- "(%d)\n", err);
+ pr_err("Device resource addition failed (%d)\n", err);
goto exit_device_put;
}
err = platform_device_add(pdev);
if (err) {
- printk(KERN_ERR "via686a: Device addition failed (%d)\n",
- err);
+ pr_err("Device addition failed (%d)\n", err);
goto exit_device_put;
}
@@ -817,7 +871,7 @@ exit:
return err;
}
-static int __devinit via686a_pci_probe(struct pci_dev *dev,
+static int via686a_pci_probe(struct pci_dev *dev,
const struct pci_device_id *id)
{
u16 address, val;
@@ -835,8 +889,8 @@ static int __devinit via686a_pci_probe(struct pci_dev *dev,
address = val & ~(VIA686A_EXTENT - 1);
if (address == 0) {
- dev_err(&dev->dev, "base address not set - upgrade BIOS "
- "or use force_addr=0xaddr\n");
+ dev_err(&dev->dev,
+ "base address not set - upgrade BIOS or use force_addr=0xaddr\n");
return -ENODEV;
}
@@ -845,8 +899,9 @@ static int __devinit via686a_pci_probe(struct pci_dev *dev,
return -ENODEV;
if (!(val & 0x0001)) {
if (!force_addr) {
- dev_warn(&dev->dev, "Sensors disabled, enable "
- "with force_addr=0x%x\n", address);
+ dev_warn(&dev->dev,
+ "Sensors disabled, enable with force_addr=0x%x\n",
+ address);
return -ENODEV;
}
@@ -864,7 +919,8 @@ static int __devinit via686a_pci_probe(struct pci_dev *dev,
if (via686a_device_add(address))
goto exit_unregister;
- /* Always return failure here. This is to allow other drivers to bind
+ /*
+ * Always return failure here. This is to allow other drivers to bind
* to this pci device. We don't really want to have control over the
* pci device, we only wanted to read as few register values from it.
*/
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-03 18:29:55 +0000