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Diffstat (limited to 'drivers/hwmon/abituguru3.c')
-rw-r--r--drivers/hwmon/abituguru3.c267
1 files changed, 164 insertions, 103 deletions
diff --git a/drivers/hwmon/abituguru3.c b/drivers/hwmon/abituguru3.c
index 34a14a77e008..a5bc4287daa6 100644
--- a/drivers/hwmon/abituguru3.c
+++ b/drivers/hwmon/abituguru3.c
@@ -1,28 +1,28 @@
/*
- abituguru3.c
-
- Copyright (c) 2006-2008 Hans de Goede <hdegoede@redhat.com>
- Copyright (c) 2008 Alistair John Strachan <alistair@devzero.co.uk>
-
- 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.
-*/
+ * abituguru3.c
+ *
+ * Copyright (c) 2006-2008 Hans de Goede <hdegoede@redhat.com>
+ * Copyright (c) 2008 Alistair John Strachan <alistair@devzero.co.uk>
+ *
+ * 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.
+ */
/*
- This driver supports the sensor part of revision 3 of the custom Abit uGuru
- chip found on newer Abit uGuru motherboards. Note: because of lack of specs
- only reading the sensors and their settings is supported.
-*/
+ * This driver supports the sensor part of revision 3 of the custom Abit uGuru
+ * chip found on newer Abit uGuru motherboards. Note: because of lack of specs
+ * only reading the sensors and their settings is supported.
+ */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -62,13 +62,17 @@
#define ABIT_UGURU3_TEMP_SENSOR 1
#define ABIT_UGURU3_FAN_SENSOR 2
-/* Timeouts / Retries, if these turn out to need a lot of fiddling we could
- convert them to params. Determined by trial and error. I assume this is
- cpu-speed independent, since the ISA-bus and not the CPU should be the
- bottleneck. */
+/*
+ * Timeouts / Retries, if these turn out to need a lot of fiddling we could
+ * convert them to params. Determined by trial and error. I assume this is
+ * cpu-speed independent, since the ISA-bus and not the CPU should be the
+ * bottleneck.
+ */
#define ABIT_UGURU3_WAIT_TIMEOUT 250
-/* Normally the 0xAC at the end of synchronize() is reported after the
- first read, but sometimes not and we need to poll */
+/*
+ * Normally the 0xAC at the end of synchronize() is reported after the
+ * first read, but sometimes not and we need to poll
+ */
#define ABIT_UGURU3_SYNCHRONIZE_TIMEOUT 5
/* utility macros */
#define ABIT_UGURU3_NAME "abituguru3"
@@ -78,32 +82,45 @@
/* Macros to help calculate the sysfs_names array length */
#define ABIT_UGURU3_MAX_NO_SENSORS 26
-/* sum of strlen +1 of: in??_input\0, in??_{min,max}\0, in??_{min,max}_alarm\0,
- in??_{min,max}_alarm_enable\0, in??_beep\0, in??_shutdown\0, in??_label\0 */
-#define ABIT_UGURU3_IN_NAMES_LENGTH (11 + 2 * 9 + 2 * 15 + 2 * 22 + 10 + 14 + 11)
-/* sum of strlen +1 of: temp??_input\0, temp??_max\0, temp??_crit\0,
- temp??_alarm\0, temp??_alarm_enable\0, temp??_beep\0, temp??_shutdown\0,
- temp??_label\0 */
+/*
+ * sum of strlen +1 of: in??_input\0, in??_{min,max}\0, in??_{min,max}_alarm\0,
+ * in??_{min,max}_alarm_enable\0, in??_beep\0, in??_shutdown\0, in??_label\0
+ */
+#define ABIT_UGURU3_IN_NAMES_LENGTH \
+ (11 + 2 * 9 + 2 * 15 + 2 * 22 + 10 + 14 + 11)
+/*
+ * sum of strlen +1 of: temp??_input\0, temp??_max\0, temp??_crit\0,
+ * temp??_alarm\0, temp??_alarm_enable\0, temp??_beep\0, temp??_shutdown\0,
+ * temp??_label\0
+ */
#define ABIT_UGURU3_TEMP_NAMES_LENGTH (13 + 11 + 12 + 13 + 20 + 12 + 16 + 13)
-/* sum of strlen +1 of: fan??_input\0, fan??_min\0, fan??_alarm\0,
- fan??_alarm_enable\0, fan??_beep\0, fan??_shutdown\0, fan??_label\0 */
+/*
+ * sum of strlen +1 of: fan??_input\0, fan??_min\0, fan??_alarm\0,
+ * fan??_alarm_enable\0, fan??_beep\0, fan??_shutdown\0, fan??_label\0
+ */
#define ABIT_UGURU3_FAN_NAMES_LENGTH (12 + 10 + 12 + 19 + 11 + 15 + 12)
-/* Worst case scenario 16 in sensors (longest names_length) and the rest
- temp sensors (second longest names_length). */
+/*
+ * Worst case scenario 16 in sensors (longest names_length) and the rest
+ * temp sensors (second longest names_length).
+ */
#define ABIT_UGURU3_SYSFS_NAMES_LENGTH (16 * ABIT_UGURU3_IN_NAMES_LENGTH + \
(ABIT_UGURU3_MAX_NO_SENSORS - 16) * ABIT_UGURU3_TEMP_NAMES_LENGTH)
-/* All the macros below are named identical to the openguru2 program
- reverse engineered by Louis Kruger, hence the names might not be 100%
- logical. I could come up with better names, but I prefer keeping the names
- identical so that this driver can be compared with his work more easily. */
+/*
+ * All the macros below are named identical to the openguru2 program
+ * reverse engineered by Louis Kruger, hence the names might not be 100%
+ * logical. I could come up with better names, but I prefer keeping the names
+ * identical so that this driver can be compared with his work more easily.
+ */
/* Two i/o-ports are used by uGuru */
#define ABIT_UGURU3_BASE 0x00E0
#define ABIT_UGURU3_CMD 0x00
#define ABIT_UGURU3_DATA 0x04
#define ABIT_UGURU3_REGION_LENGTH 5
-/* The wait_xxx functions return this on success and the last contents
- of the DATA register (0-255) on failure. */
+/*
+ * The wait_xxx functions return this on success and the last contents
+ * of the DATA register (0-255) on failure.
+ */
#define ABIT_UGURU3_SUCCESS -1
/* uGuru status flags */
#define ABIT_UGURU3_STATUS_READY_FOR_READ 0x01
@@ -112,7 +129,7 @@
/* Structures */
struct abituguru3_sensor_info {
- const char* name;
+ const char *name;
int port;
int type;
int multiplier;
@@ -130,9 +147,11 @@ struct abituguru3_motherboard_info {
struct abituguru3_sensor_info sensors[ABIT_UGURU3_MAX_NO_SENSORS + 1];
};
-/* For the Abit uGuru, we need to keep some data in memory.
- The structure is dynamically allocated, at the same time when a new
- abituguru3 device is allocated. */
+/*
+ * For the Abit uGuru, we need to keep some data in memory.
+ * The structure is dynamically allocated, at the same time when a new
+ * abituguru3 device is allocated.
+ */
struct abituguru3_data {
struct device *hwmon_dev; /* hwmon registered device */
struct mutex update_lock; /* protect access to data and uGuru */
@@ -140,8 +159,10 @@ struct abituguru3_data {
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
- /* For convenience the sysfs attr and their names are generated
- automatically. We have max 10 entries per sensor (for in sensors) */
+ /*
+ * For convenience the sysfs attr and their names are generated
+ * automatically. We have max 10 entries per sensor (for in sensors)
+ */
struct sensor_device_attribute_2 sysfs_attr[ABIT_UGURU3_MAX_NO_SENSORS
* 10];
@@ -151,9 +172,11 @@ struct abituguru3_data {
/* Pointer to the sensors info for the detected motherboard */
const struct abituguru3_sensor_info *sensors;
- /* The abituguru3 supports up to 48 sensors, and thus has registers
- sets for 48 sensors, for convienence reasons / simplicity of the
- code we always read and store all registers for all 48 sensors */
+ /*
+ * The abituguru3 supports up to 48 sensors, and thus has registers
+ * sets for 48 sensors, for convienence reasons / simplicity of the
+ * code we always read and store all registers for all 48 sensors
+ */
/* Alarms for all 48 sensors (1 bit per sensor) */
u8 alarms[48/8];
@@ -161,9 +184,11 @@ struct abituguru3_data {
/* Value of all 48 sensors */
u8 value[48];
- /* Settings of all 48 sensors, note in and temp sensors (the first 32
- sensors) have 3 bytes of settings, while fans only have 2 bytes,
- for convenience we use 3 bytes for all sensors */
+ /*
+ * Settings of all 48 sensors, note in and temp sensors (the first 32
+ * sensors) have 3 bytes of settings, while fans only have 2 bytes,
+ * for convenience we use 3 bytes for all sensors
+ */
u8 settings[48][3];
};
@@ -626,8 +651,10 @@ static int abituguru3_wait_while_busy(struct abituguru3_data *data)
timeout--;
if (timeout == 0)
return x;
- /* sleep a bit before our last try, to give the uGuru3 one
- last chance to respond. */
+ /*
+ * sleep a bit before our last try, to give the uGuru3 one
+ * last chance to respond.
+ */
if (timeout == 1)
msleep(1);
}
@@ -645,48 +672,57 @@ static int abituguru3_wait_for_read(struct abituguru3_data *data)
timeout--;
if (timeout == 0)
return x;
- /* sleep a bit before our last try, to give the uGuru3 one
- last chance to respond. */
+ /*
+ * sleep a bit before our last try, to give the uGuru3 one
+ * last chance to respond.
+ */
if (timeout == 1)
msleep(1);
}
return ABIT_UGURU3_SUCCESS;
}
-/* This synchronizes us with the uGuru3's protocol state machine, this
- must be done before each command. */
+/*
+ * This synchronizes us with the uGuru3's protocol state machine, this
+ * must be done before each command.
+ */
static int abituguru3_synchronize(struct abituguru3_data *data)
{
int x, timeout = ABIT_UGURU3_SYNCHRONIZE_TIMEOUT;
- if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
+ x = abituguru3_wait_while_busy(data);
+ if (x != ABIT_UGURU3_SUCCESS) {
ABIT_UGURU3_DEBUG("synchronize timeout during initial busy "
"wait, status: 0x%02x\n", x);
return -EIO;
}
outb(0x20, data->addr + ABIT_UGURU3_DATA);
- if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
+ x = abituguru3_wait_while_busy(data);
+ if (x != ABIT_UGURU3_SUCCESS) {
ABIT_UGURU3_DEBUG("synchronize timeout after sending 0x20, "
"status: 0x%02x\n", x);
return -EIO;
}
outb(0x10, data->addr + ABIT_UGURU3_CMD);
- if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
+ x = abituguru3_wait_while_busy(data);
+ if (x != ABIT_UGURU3_SUCCESS) {
ABIT_UGURU3_DEBUG("synchronize timeout after sending 0x10, "
"status: 0x%02x\n", x);
return -EIO;
}
outb(0x00, data->addr + ABIT_UGURU3_CMD);
- if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
+ x = abituguru3_wait_while_busy(data);
+ if (x != ABIT_UGURU3_SUCCESS) {
ABIT_UGURU3_DEBUG("synchronize timeout after sending 0x00, "
"status: 0x%02x\n", x);
return -EIO;
}
- if ((x = abituguru3_wait_for_read(data)) != ABIT_UGURU3_SUCCESS) {
+ x = abituguru3_wait_for_read(data);
+ if (x != ABIT_UGURU3_SUCCESS) {
ABIT_UGURU3_DEBUG("synchronize timeout waiting for read, "
"status: 0x%02x\n", x);
return -EIO;
@@ -705,18 +741,22 @@ static int abituguru3_synchronize(struct abituguru3_data *data)
return 0;
}
-/* Read count bytes from sensor sensor_addr in bank bank_addr and store the
- result in buf */
+/*
+ * Read count bytes from sensor sensor_addr in bank bank_addr and store the
+ * result in buf
+ */
static int abituguru3_read(struct abituguru3_data *data, u8 bank, u8 offset,
u8 count, u8 *buf)
{
int i, x;
- if ((x = abituguru3_synchronize(data)))
+ x = abituguru3_synchronize(data);
+ if (x)
return x;
outb(0x1A, data->addr + ABIT_UGURU3_DATA);
- if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
+ x = abituguru3_wait_while_busy(data);
+ if (x != ABIT_UGURU3_SUCCESS) {
ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
"sending 0x1A, status: 0x%02x\n", (unsigned int)bank,
(unsigned int)offset, x);
@@ -724,7 +764,8 @@ static int abituguru3_read(struct abituguru3_data *data, u8 bank, u8 offset,
}
outb(bank, data->addr + ABIT_UGURU3_CMD);
- if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
+ x = abituguru3_wait_while_busy(data);
+ if (x != ABIT_UGURU3_SUCCESS) {
ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
"sending the bank, status: 0x%02x\n",
(unsigned int)bank, (unsigned int)offset, x);
@@ -732,7 +773,8 @@ static int abituguru3_read(struct abituguru3_data *data, u8 bank, u8 offset,
}
outb(offset, data->addr + ABIT_UGURU3_CMD);
- if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
+ x = abituguru3_wait_while_busy(data);
+ if (x != ABIT_UGURU3_SUCCESS) {
ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
"sending the offset, status: 0x%02x\n",
(unsigned int)bank, (unsigned int)offset, x);
@@ -740,7 +782,8 @@ static int abituguru3_read(struct abituguru3_data *data, u8 bank, u8 offset,
}
outb(count, data->addr + ABIT_UGURU3_CMD);
- if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
+ x = abituguru3_wait_while_busy(data);
+ if (x != ABIT_UGURU3_SUCCESS) {
ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
"sending the count, status: 0x%02x\n",
(unsigned int)bank, (unsigned int)offset, x);
@@ -748,8 +791,8 @@ static int abituguru3_read(struct abituguru3_data *data, u8 bank, u8 offset,
}
for (i = 0; i < count; i++) {
- if ((x = abituguru3_wait_for_read(data)) !=
- ABIT_UGURU3_SUCCESS) {
+ x = abituguru3_wait_for_read(data);
+ if (x != ABIT_UGURU3_SUCCESS) {
ABIT_UGURU3_DEBUG("timeout reading byte %d from "
"0x%02x:0x%02x, status: 0x%02x\n", i,
(unsigned int)bank, (unsigned int)offset, x);
@@ -760,28 +803,34 @@ static int abituguru3_read(struct abituguru3_data *data, u8 bank, u8 offset,
return i;
}
-/* Sensor settings are stored 1 byte per offset with the bytes
- placed add consecutive offsets. */
+/*
+ * Sensor settings are stored 1 byte per offset with the bytes
+ * placed add consecutive offsets.
+ */
static int abituguru3_read_increment_offset(struct abituguru3_data *data,
u8 bank, u8 offset, u8 count,
u8 *buf, int offset_count)
{
int i, x;
- for (i = 0; i < offset_count; i++)
- if ((x = abituguru3_read(data, bank, offset + i, count,
- buf + i * count)) != count) {
+ for (i = 0; i < offset_count; i++) {
+ x = abituguru3_read(data, bank, offset + i, count,
+ buf + i * count);
+ if (x != count) {
if (x < 0)
return x;
return i * count + x;
}
+ }
return i * count;
}
-/* Following are the sysfs callback functions. These functions expect:
- sensor_device_attribute_2->index: index into the data->sensors array
- sensor_device_attribute_2->nr: register offset, bitmask or NA. */
+/*
+ * Following are the sysfs callback functions. These functions expect:
+ * sensor_device_attribute_2->index: index into the data->sensors array
+ * sensor_device_attribute_2->nr: register offset, bitmask or NA.
+ */
static struct abituguru3_data *abituguru3_update_device(struct device *dev);
static ssize_t show_value(struct device *dev,
@@ -807,8 +856,10 @@ static ssize_t show_value(struct device *dev,
value = (value * sensor->multiplier) / sensor->divisor +
sensor->offset;
- /* alternatively we could update the sensors settings struct for this,
- but then its contents would differ from the windows sw ini files */
+ /*
+ * alternatively we could update the sensors settings struct for this,
+ * but then its contents would differ from the windows sw ini files
+ */
if (sensor->type == ABIT_UGURU3_TEMP_SENSOR)
value *= 1000;
@@ -827,10 +878,12 @@ static ssize_t show_alarm(struct device *dev,
port = data->sensors[attr->index].port;
- /* See if the alarm bit for this sensor is set and if a bitmask is
- given in attr->nr also check if the alarm matches the type of alarm
- we're looking for (for volt it can be either low or high). The type
- is stored in a few readonly bits in the settings of the sensor. */
+ /*
+ * See if the alarm bit for this sensor is set and if a bitmask is
+ * given in attr->nr also check if the alarm matches the type of alarm
+ * we're looking for (for volt it can be either low or high). The type
+ * is stored in a few readonly bits in the settings of the sensor.
+ */
if ((data->alarms[port / 8] & (0x01 << (port % 8))) &&
(!attr->nr || (data->settings[port][0] & attr->nr)))
return sprintf(buf, "1\n");
@@ -923,7 +976,8 @@ static int __devinit abituguru3_probe(struct platform_device *pdev)
u8 buf[2];
u16 id;
- if (!(data = kzalloc(sizeof(struct abituguru3_data), GFP_KERNEL)))
+ data = kzalloc(sizeof(struct abituguru3_data), GFP_KERNEL);
+ if (!data)
return -ENOMEM;
data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
@@ -931,10 +985,10 @@ static int __devinit abituguru3_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, data);
/* Read the motherboard ID */
- if ((i = abituguru3_read(data, ABIT_UGURU3_MISC_BANK,
- ABIT_UGURU3_BOARD_ID, 2, buf)) != 2) {
+ i = abituguru3_read(data, ABIT_UGURU3_MISC_BANK, ABIT_UGURU3_BOARD_ID,
+ 2, buf);
+ if (i != 2)
goto abituguru3_probe_error;
- }
/* Completely read the uGuru to see if one really is there */
if (!abituguru3_update_device(&pdev->dev))
@@ -1091,8 +1145,10 @@ LEAVE_UPDATE:
static int abituguru3_suspend(struct platform_device *pdev, pm_message_t state)
{
struct abituguru3_data *data = platform_get_drvdata(pdev);
- /* make sure all communications with the uguru3 are done and no new
- ones are started */
+ /*
+ * make sure all communications with the uguru3 are done and no new
+ * ones are started
+ */
mutex_lock(&data->update_lock);
return 0;
}
@@ -1134,7 +1190,8 @@ static int __init abituguru3_dmi_detect(void)
if (!board_name)
return err;
- /* At the moment, we don't care about the part of the vendor
+ /*
+ * At the moment, we don't care about the part of the vendor
* DMI string contained in brackets. Truncate the string at
* the first occurrence of a bracket. Trim any trailing space
* from the substring.
@@ -1157,15 +1214,18 @@ static int __init abituguru3_dmi_detect(void)
return 1;
}
-/* FIXME: Manual detection should die eventually; we need to collect stable
+/*
+ * FIXME: Manual detection should die eventually; we need to collect stable
* DMI model names first before we can rely entirely on CONFIG_DMI.
*/
static int __init abituguru3_detect(void)
{
- /* See if there is an uguru3 there. An idle uGuru3 will hold 0x00 or
- 0x08 at DATA and 0xAC at CMD. Sometimes the uGuru3 will hold 0x05
- or 0x55 at CMD instead, why is unknown. */
+ /*
+ * See if there is an uguru3 there. An idle uGuru3 will hold 0x00 or
+ * 0x08 at DATA and 0xAC at CMD. Sometimes the uGuru3 will hold 0x05
+ * or 0x55 at CMD instead, why is unknown.
+ */
u8 data_val = inb_p(ABIT_UGURU3_BASE + ABIT_UGURU3_DATA);
u8 cmd_val = inb_p(ABIT_UGURU3_BASE + ABIT_UGURU3_CMD);
if (((data_val == 0x00) || (data_val == 0x08)) &&
@@ -1197,7 +1257,8 @@ static int __init abituguru3_init(void)
if (err < 0)
return err;
- /* Fall back to manual detection if there was no exact
+ /*
+ * Fall back to manual detection if there was no exact
* board name match, or force was specified.
*/
if (err > 0) {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.