| /* |
| * vt8231.c - Part of lm_sensors, Linux kernel modules |
| * for hardware monitoring |
| * |
| * Copyright (c) 2005 Roger Lucas <vt8231@hiddenengine.co.uk> |
| * Copyright (c) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com> |
| * Aaron M. Marsh <amarsh@sdf.lonestar.org> |
| * |
| * 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 VIA VT8231 South Bridge embedded sensors |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/pci.h> |
| #include <linux/jiffies.h> |
| #include <linux/platform_device.h> |
| #include <linux/hwmon.h> |
| #include <linux/hwmon-sysfs.h> |
| #include <linux/hwmon-vid.h> |
| #include <linux/err.h> |
| #include <linux/mutex.h> |
| #include <linux/acpi.h> |
| #include <linux/io.h> |
| |
| static int force_addr; |
| module_param(force_addr, int, 0); |
| MODULE_PARM_DESC(force_addr, "Initialize the base address of the sensors"); |
| |
| static struct platform_device *pdev; |
| |
| #define VT8231_EXTENT 0x80 |
| #define VT8231_BASE_REG 0x70 |
| #define VT8231_ENABLE_REG 0x74 |
| |
| /* |
| * The VT8231 registers |
| * |
| * The reset value for the input channel configuration is used (Reg 0x4A=0x07) |
| * which sets the selected inputs marked with '*' below if multiple options are |
| * possible: |
| * |
| * Voltage Mode Temperature Mode |
| * Sensor Linux Id Linux Id VIA Id |
| * -------- -------- -------- ------ |
| * CPU Diode N/A temp1 0 |
| * UIC1 in0 temp2 * 1 |
| * UIC2 in1 * temp3 2 |
| * UIC3 in2 * temp4 3 |
| * UIC4 in3 * temp5 4 |
| * UIC5 in4 * temp6 5 |
| * 3.3V in5 N/A |
| * |
| * Note that the BIOS may set the configuration register to a different value |
| * to match the motherboard configuration. |
| */ |
| |
| /* fans numbered 0-1 */ |
| #define VT8231_REG_FAN_MIN(nr) (0x3b + (nr)) |
| #define VT8231_REG_FAN(nr) (0x29 + (nr)) |
| |
| /* Voltage inputs numbered 0-5 */ |
| |
| static const u8 regvolt[] = { 0x21, 0x22, 0x23, 0x24, 0x25, 0x26 }; |
| static const u8 regvoltmax[] = { 0x3d, 0x2b, 0x2d, 0x2f, 0x31, 0x33 }; |
| static const u8 regvoltmin[] = { 0x3e, 0x2c, 0x2e, 0x30, 0x32, 0x34 }; |
| |
| /* |
| * Temperatures are numbered 1-6 according to the Linux kernel specification. |
| * |
| * In the VIA datasheet, however, the temperatures are numbered from zero. |
| * Since it is important that this driver can easily be compared to the VIA |
| * datasheet, we will use the VIA numbering within this driver and map the |
| * kernel sysfs device name to the VIA number in the sysfs callback. |
| */ |
| |
| #define VT8231_REG_TEMP_LOW01 0x49 |
| #define VT8231_REG_TEMP_LOW25 0x4d |
| |
| static const u8 regtemp[] = { 0x1f, 0x21, 0x22, 0x23, 0x24, 0x25 }; |
| static const u8 regtempmax[] = { 0x39, 0x3d, 0x2b, 0x2d, 0x2f, 0x31 }; |
| static const u8 regtempmin[] = { 0x3a, 0x3e, 0x2c, 0x2e, 0x30, 0x32 }; |
| |
| #define TEMP_FROM_REG(reg) (((253 * 4 - (reg)) * 550 + 105) / 210) |
| #define TEMP_MAXMIN_FROM_REG(reg) (((253 - (reg)) * 2200 + 105) / 210) |
| #define TEMP_MAXMIN_TO_REG(val) (253 - ((val) * 210 + 1100) / 2200) |
| |
| #define VT8231_REG_CONFIG 0x40 |
| #define VT8231_REG_ALARM1 0x41 |
| #define VT8231_REG_ALARM2 0x42 |
| #define VT8231_REG_FANDIV 0x47 |
| #define VT8231_REG_UCH_CONFIG 0x4a |
| #define VT8231_REG_TEMP1_CONFIG 0x4b |
| #define VT8231_REG_TEMP2_CONFIG 0x4c |
| |
| /* |
| * temps 0-5 as numbered in VIA datasheet - see later for mapping to Linux |
| * numbering |
| */ |
| #define ISTEMP(i, ch_config) ((i) == 0 ? 1 : \ |
| ((ch_config) >> ((i)+1)) & 0x01) |
| /* voltages 0-5 */ |
| #define ISVOLT(i, ch_config) ((i) == 5 ? 1 : \ |
| !(((ch_config) >> ((i)+2)) & 0x01)) |
| |
| #define DIV_FROM_REG(val) (1 << (val)) |
| |
| /* |
| * NB The values returned here are NOT temperatures. The calibration curves |
| * for the thermistor curves are board-specific and must go in the |
| * sensors.conf file. Temperature sensors are actually ten bits, but the |
| * VIA datasheet only considers the 8 MSBs obtained from the regtemp[] |
| * register. The temperature value returned should have a magnitude of 3, |
| * so we use the VIA scaling as the "true" scaling and use the remaining 2 |
| * LSBs as fractional precision. |
| * |
| * All the on-chip hardware temperature comparisons for the alarms are only |
| * 8-bits wide, and compare against the 8 MSBs of the temperature. The bits |
| * in the registers VT8231_REG_TEMP_LOW01 and VT8231_REG_TEMP_LOW25 are |
| * ignored. |
| */ |
| |
| /* |
| ****** FAN RPM CONVERSIONS ******** |
| * This chip saturates back at 0, not at 255 like many the other chips. |
| * So, 0 means 0 RPM |
| */ |
| static inline u8 FAN_TO_REG(long rpm, int div) |
| { |
| if (rpm == 0) |
| return 0; |
| return SENSORS_LIMIT(1310720 / (rpm * div), 1, 255); |
| } |
| |
| #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : 1310720 / ((val) * (div))) |
| |
| struct vt8231_data { |
| unsigned short addr; |
| const char *name; |
| |
| struct mutex update_lock; |
| struct device *hwmon_dev; |
| char valid; /* !=0 if following fields are valid */ |
| unsigned long last_updated; /* In jiffies */ |
| |
| u8 in[6]; /* Register value */ |
| u8 in_max[6]; /* Register value */ |
| u8 in_min[6]; /* Register value */ |
| u16 temp[6]; /* Register value 10 bit, right aligned */ |
| u8 temp_max[6]; /* Register value */ |
| u8 temp_min[6]; /* Register value */ |
| u8 fan[2]; /* Register value */ |
| u8 fan_min[2]; /* Register value */ |
| u8 fan_div[2]; /* Register encoding, shifted right */ |
| u16 alarms; /* Register encoding */ |
| u8 uch_config; |
| }; |
| |
| static struct pci_dev *s_bridge; |
| static int vt8231_probe(struct platform_device *pdev); |
| static int __devexit vt8231_remove(struct platform_device *pdev); |
| static struct vt8231_data *vt8231_update_device(struct device *dev); |
| static void vt8231_init_device(struct vt8231_data *data); |
| |
| static inline int vt8231_read_value(struct vt8231_data *data, u8 reg) |
| { |
| return inb_p(data->addr + reg); |
| } |
| |
| static inline void vt8231_write_value(struct vt8231_data *data, u8 reg, |
| u8 value) |
| { |
| outb_p(value, data->addr + reg); |
| } |
| |
| /* following are the sysfs callback functions */ |
| static ssize_t show_in(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = vt8231_update_device(dev); |
| |
| return sprintf(buf, "%d\n", ((data->in[nr] - 3) * 10000) / 958); |
| } |
| |
| static ssize_t show_in_min(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = vt8231_update_device(dev); |
| |
| return sprintf(buf, "%d\n", ((data->in_min[nr] - 3) * 10000) / 958); |
| } |
| |
| static ssize_t show_in_max(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = vt8231_update_device(dev); |
| |
| return sprintf(buf, "%d\n", (((data->in_max[nr] - 3) * 10000) / 958)); |
| } |
| |
| static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = dev_get_drvdata(dev); |
| unsigned long val; |
| int err; |
| |
| err = kstrtoul(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| data->in_min[nr] = SENSORS_LIMIT(((val * 958) / 10000) + 3, 0, 255); |
| vt8231_write_value(data, regvoltmin[nr], data->in_min[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = dev_get_drvdata(dev); |
| unsigned long val; |
| int err; |
| |
| err = kstrtoul(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| data->in_max[nr] = SENSORS_LIMIT(((val * 958) / 10000) + 3, 0, 255); |
| vt8231_write_value(data, regvoltmax[nr], data->in_max[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| /* Special case for input 5 as this has 3.3V scaling built into the chip */ |
| static ssize_t show_in5(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct vt8231_data *data = vt8231_update_device(dev); |
| |
| return sprintf(buf, "%d\n", |
| (((data->in[5] - 3) * 10000 * 54) / (958 * 34))); |
| } |
| |
| static ssize_t show_in5_min(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct vt8231_data *data = vt8231_update_device(dev); |
| |
| return sprintf(buf, "%d\n", |
| (((data->in_min[5] - 3) * 10000 * 54) / (958 * 34))); |
| } |
| |
| static ssize_t show_in5_max(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct vt8231_data *data = vt8231_update_device(dev); |
| |
| return sprintf(buf, "%d\n", |
| (((data->in_max[5] - 3) * 10000 * 54) / (958 * 34))); |
| } |
| |
| static ssize_t set_in5_min(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct vt8231_data *data = dev_get_drvdata(dev); |
| unsigned long val; |
| int err; |
| |
| err = kstrtoul(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| data->in_min[5] = SENSORS_LIMIT(((val * 958 * 34) / (10000 * 54)) + 3, |
| 0, 255); |
| vt8231_write_value(data, regvoltmin[5], data->in_min[5]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t set_in5_max(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct vt8231_data *data = dev_get_drvdata(dev); |
| unsigned long val; |
| int err; |
| |
| err = kstrtoul(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| data->in_max[5] = SENSORS_LIMIT(((val * 958 * 34) / (10000 * 54)) + 3, |
| 0, 255); |
| vt8231_write_value(data, regvoltmax[5], data->in_max[5]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| #define define_voltage_sysfs(offset) \ |
| static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
| show_in, NULL, offset); \ |
| static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
| show_in_min, set_in_min, offset); \ |
| static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ |
| show_in_max, set_in_max, offset) |
| |
| define_voltage_sysfs(0); |
| define_voltage_sysfs(1); |
| define_voltage_sysfs(2); |
| define_voltage_sysfs(3); |
| define_voltage_sysfs(4); |
| |
| static DEVICE_ATTR(in5_input, S_IRUGO, show_in5, NULL); |
| static DEVICE_ATTR(in5_min, S_IRUGO | S_IWUSR, show_in5_min, set_in5_min); |
| static DEVICE_ATTR(in5_max, S_IRUGO | S_IWUSR, show_in5_max, set_in5_max); |
| |
| /* Temperatures */ |
| static ssize_t show_temp0(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct vt8231_data *data = vt8231_update_device(dev); |
| return sprintf(buf, "%d\n", data->temp[0] * 250); |
| } |
| |
| static ssize_t show_temp0_max(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct vt8231_data *data = vt8231_update_device(dev); |
| return sprintf(buf, "%d\n", data->temp_max[0] * 1000); |
| } |
| |
| static ssize_t show_temp0_min(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct vt8231_data *data = vt8231_update_device(dev); |
| return sprintf(buf, "%d\n", data->temp_min[0] * 1000); |
| } |
| |
| static ssize_t set_temp0_max(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct vt8231_data *data = dev_get_drvdata(dev); |
| long val; |
| int err; |
| |
| err = kstrtol(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| data->temp_max[0] = SENSORS_LIMIT((val + 500) / 1000, 0, 255); |
| vt8231_write_value(data, regtempmax[0], data->temp_max[0]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| static ssize_t set_temp0_min(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct vt8231_data *data = dev_get_drvdata(dev); |
| long val; |
| int err; |
| |
| err = kstrtol(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| data->temp_min[0] = SENSORS_LIMIT((val + 500) / 1000, 0, 255); |
| vt8231_write_value(data, regtempmin[0], data->temp_min[0]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_temp(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = vt8231_update_device(dev); |
| return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); |
| } |
| |
| static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = vt8231_update_device(dev); |
| return sprintf(buf, "%d\n", TEMP_MAXMIN_FROM_REG(data->temp_max[nr])); |
| } |
| |
| static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = vt8231_update_device(dev); |
| return sprintf(buf, "%d\n", TEMP_MAXMIN_FROM_REG(data->temp_min[nr])); |
| } |
| |
| static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = dev_get_drvdata(dev); |
| long val; |
| int err; |
| |
| err = kstrtol(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| data->temp_max[nr] = SENSORS_LIMIT(TEMP_MAXMIN_TO_REG(val), 0, 255); |
| vt8231_write_value(data, regtempmax[nr], data->temp_max[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = dev_get_drvdata(dev); |
| long val; |
| int err; |
| |
| err = kstrtol(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| data->temp_min[nr] = SENSORS_LIMIT(TEMP_MAXMIN_TO_REG(val), 0, 255); |
| vt8231_write_value(data, regtempmin[nr], data->temp_min[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| /* |
| * Note that these map the Linux temperature sensor numbering (1-6) to the VIA |
| * temperature sensor numbering (0-5) |
| */ |
| #define define_temperature_sysfs(offset) \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
| show_temp, NULL, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ |
| show_temp_max, set_temp_max, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \ |
| show_temp_min, set_temp_min, offset - 1) |
| |
| static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp0, NULL); |
| static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp0_max, set_temp0_max); |
| static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp0_min, |
| set_temp0_min); |
| |
| define_temperature_sysfs(2); |
| define_temperature_sysfs(3); |
| define_temperature_sysfs(4); |
| define_temperature_sysfs(5); |
| define_temperature_sysfs(6); |
| |
| /* Fans */ |
| static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = vt8231_update_device(dev); |
| return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], |
| DIV_FROM_REG(data->fan_div[nr]))); |
| } |
| |
| static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = vt8231_update_device(dev); |
| return sprintf(buf, "%d\n", 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 *attr, |
| char *buf) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = vt8231_update_device(dev); |
| return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); |
| } |
| |
| static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| struct vt8231_data *data = dev_get_drvdata(dev); |
| 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])); |
| vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), data->fan_min[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct vt8231_data *data = dev_get_drvdata(dev); |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| unsigned long val; |
| int nr = sensor_attr->index; |
| int old = vt8231_read_value(data, VT8231_REG_FANDIV); |
| long min = FAN_FROM_REG(data->fan_min[nr], |
| DIV_FROM_REG(data->fan_div[nr])); |
| int err; |
| |
| err = kstrtoul(buf, 10, &val); |
| if (err) |
| return err; |
| |
| mutex_lock(&data->update_lock); |
| switch (val) { |
| case 1: |
| data->fan_div[nr] = 0; |
| break; |
| case 2: |
| data->fan_div[nr] = 1; |
| break; |
| case 4: |
| data->fan_div[nr] = 2; |
| break; |
| case 8: |
| data->fan_div[nr] = 3; |
| break; |
| default: |
| dev_err(dev, "fan_div value %ld not supported. " |
| "Choose one of 1, 2, 4 or 8!\n", val); |
| mutex_unlock(&data->update_lock); |
| return -EINVAL; |
| } |
| |
| /* Correct the fan minimum speed */ |
| data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); |
| vt8231_write_value(data, VT8231_REG_FAN_MIN(nr), data->fan_min[nr]); |
| |
| old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4); |
| vt8231_write_value(data, VT8231_REG_FANDIV, old); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| |
| #define define_fan_sysfs(offset) \ |
| static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ |
| show_fan, NULL, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ |
| show_fan_div, set_fan_div, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ |
| show_fan_min, set_fan_min, offset - 1) |
| |
| define_fan_sysfs(1); |
| define_fan_sysfs(2); |
| |
| /* Alarms */ |
| static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct vt8231_data *data = vt8231_update_device(dev); |
| return sprintf(buf, "%d\n", data->alarms); |
| } |
| static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
| |
| static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| int bitnr = to_sensor_dev_attr(attr)->index; |
| struct vt8231_data *data = vt8231_update_device(dev); |
| return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); |
| } |
| static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); |
| static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 11); |
| static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 0); |
| static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL, 1); |
| static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL, 3); |
| static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL, 8); |
| static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 11); |
| static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 0); |
| static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 1); |
| static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); |
| static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); |
| static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 2); |
| static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); |
| static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); |
| |
| static ssize_t show_name(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct vt8231_data *data = dev_get_drvdata(dev); |
| return sprintf(buf, "%s\n", data->name); |
| } |
| static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
| |
| static struct attribute *vt8231_attributes_temps[6][5] = { |
| { |
| &dev_attr_temp1_input.attr, |
| &dev_attr_temp1_max_hyst.attr, |
| &dev_attr_temp1_max.attr, |
| &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_temp2_input.dev_attr.attr, |
| &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, |
| &sensor_dev_attr_temp2_max.dev_attr.attr, |
| &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_temp3_input.dev_attr.attr, |
| &sensor_dev_attr_temp3_max_hyst.dev_attr.attr, |
| &sensor_dev_attr_temp3_max.dev_attr.attr, |
| &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_temp4_input.dev_attr.attr, |
| &sensor_dev_attr_temp4_max_hyst.dev_attr.attr, |
| &sensor_dev_attr_temp4_max.dev_attr.attr, |
| &sensor_dev_attr_temp4_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_temp5_input.dev_attr.attr, |
| &sensor_dev_attr_temp5_max_hyst.dev_attr.attr, |
| &sensor_dev_attr_temp5_max.dev_attr.attr, |
| &sensor_dev_attr_temp5_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_temp6_input.dev_attr.attr, |
| &sensor_dev_attr_temp6_max_hyst.dev_attr.attr, |
| &sensor_dev_attr_temp6_max.dev_attr.attr, |
| &sensor_dev_attr_temp6_alarm.dev_attr.attr, |
| NULL |
| } |
| }; |
| |
| static const struct attribute_group vt8231_group_temps[6] = { |
| { .attrs = vt8231_attributes_temps[0] }, |
| { .attrs = vt8231_attributes_temps[1] }, |
| { .attrs = vt8231_attributes_temps[2] }, |
| { .attrs = vt8231_attributes_temps[3] }, |
| { .attrs = vt8231_attributes_temps[4] }, |
| { .attrs = vt8231_attributes_temps[5] }, |
| }; |
| |
| static struct attribute *vt8231_attributes_volts[6][5] = { |
| { |
| &sensor_dev_attr_in0_input.dev_attr.attr, |
| &sensor_dev_attr_in0_min.dev_attr.attr, |
| &sensor_dev_attr_in0_max.dev_attr.attr, |
| &sensor_dev_attr_in0_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_in1_input.dev_attr.attr, |
| &sensor_dev_attr_in1_min.dev_attr.attr, |
| &sensor_dev_attr_in1_max.dev_attr.attr, |
| &sensor_dev_attr_in1_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_in2_input.dev_attr.attr, |
| &sensor_dev_attr_in2_min.dev_attr.attr, |
| &sensor_dev_attr_in2_max.dev_attr.attr, |
| &sensor_dev_attr_in2_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_in3_input.dev_attr.attr, |
| &sensor_dev_attr_in3_min.dev_attr.attr, |
| &sensor_dev_attr_in3_max.dev_attr.attr, |
| &sensor_dev_attr_in3_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_in4_input.dev_attr.attr, |
| &sensor_dev_attr_in4_min.dev_attr.attr, |
| &sensor_dev_attr_in4_max.dev_attr.attr, |
| &sensor_dev_attr_in4_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &dev_attr_in5_input.attr, |
| &dev_attr_in5_min.attr, |
| &dev_attr_in5_max.attr, |
| &sensor_dev_attr_in5_alarm.dev_attr.attr, |
| NULL |
| } |
| }; |
| |
| static const struct attribute_group vt8231_group_volts[6] = { |
| { .attrs = vt8231_attributes_volts[0] }, |
| { .attrs = vt8231_attributes_volts[1] }, |
| { .attrs = vt8231_attributes_volts[2] }, |
| { .attrs = vt8231_attributes_volts[3] }, |
| { .attrs = vt8231_attributes_volts[4] }, |
| { .attrs = vt8231_attributes_volts[5] }, |
| }; |
| |
| static struct attribute *vt8231_attributes[] = { |
| &sensor_dev_attr_fan1_input.dev_attr.attr, |
| &sensor_dev_attr_fan2_input.dev_attr.attr, |
| &sensor_dev_attr_fan1_min.dev_attr.attr, |
| &sensor_dev_attr_fan2_min.dev_attr.attr, |
| &sensor_dev_attr_fan1_div.dev_attr.attr, |
| &sensor_dev_attr_fan2_div.dev_attr.attr, |
| &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
| &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
| &dev_attr_alarms.attr, |
| &dev_attr_name.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group vt8231_group = { |
| .attrs = vt8231_attributes, |
| }; |
| |
| static struct platform_driver vt8231_driver = { |
| .driver = { |
| .owner = THIS_MODULE, |
| .name = "vt8231", |
| }, |
| .probe = vt8231_probe, |
| .remove = vt8231_remove, |
| }; |
| |
| static DEFINE_PCI_DEVICE_TABLE(vt8231_pci_ids) = { |
| { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231_4) }, |
| { 0, } |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, vt8231_pci_ids); |
| |
| static int __devinit vt8231_pci_probe(struct pci_dev *dev, |
| const struct pci_device_id *id); |
| |
| static struct pci_driver vt8231_pci_driver = { |
| .name = "vt8231", |
| .id_table = vt8231_pci_ids, |
| .probe = vt8231_pci_probe, |
| }; |
| |
| static int vt8231_probe(struct platform_device *pdev) |
| { |
| struct resource *res; |
| struct vt8231_data *data; |
| int err = 0, i; |
| |
| /* Reserve the ISA region */ |
| res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
| if (!devm_request_region(&pdev->dev, res->start, VT8231_EXTENT, |
| vt8231_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; |
| } |
| |
| data = devm_kzalloc(&pdev->dev, sizeof(struct vt8231_data), GFP_KERNEL); |
| if (!data) |
| return -ENOMEM; |
| |
| platform_set_drvdata(pdev, data); |
| data->addr = res->start; |
| data->name = "vt8231"; |
| |
| mutex_init(&data->update_lock); |
| vt8231_init_device(data); |
| |
| /* Register sysfs hooks */ |
| err = sysfs_create_group(&pdev->dev.kobj, &vt8231_group); |
| if (err) |
| return err; |
| |
| /* Must update device information to find out the config field */ |
| data->uch_config = vt8231_read_value(data, VT8231_REG_UCH_CONFIG); |
| |
| for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) { |
| if (ISTEMP(i, data->uch_config)) { |
| err = sysfs_create_group(&pdev->dev.kobj, |
| &vt8231_group_temps[i]); |
| if (err) |
| goto exit_remove_files; |
| } |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) { |
| if (ISVOLT(i, data->uch_config)) { |
| err = sysfs_create_group(&pdev->dev.kobj, |
| &vt8231_group_volts[i]); |
| if (err) |
| goto exit_remove_files; |
| } |
| } |
| |
| data->hwmon_dev = hwmon_device_register(&pdev->dev); |
| if (IS_ERR(data->hwmon_dev)) { |
| err = PTR_ERR(data->hwmon_dev); |
| goto exit_remove_files; |
| } |
| return 0; |
| |
| exit_remove_files: |
| for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) |
| sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_volts[i]); |
| |
| for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) |
| sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_temps[i]); |
| |
| sysfs_remove_group(&pdev->dev.kobj, &vt8231_group); |
| return err; |
| } |
| |
| static int __devexit vt8231_remove(struct platform_device *pdev) |
| { |
| struct vt8231_data *data = platform_get_drvdata(pdev); |
| int i; |
| |
| hwmon_device_unregister(data->hwmon_dev); |
| |
| for (i = 0; i < ARRAY_SIZE(vt8231_group_volts); i++) |
| sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_volts[i]); |
| |
| for (i = 0; i < ARRAY_SIZE(vt8231_group_temps); i++) |
| sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_temps[i]); |
| |
| sysfs_remove_group(&pdev->dev.kobj, &vt8231_group); |
| |
| return 0; |
| } |
| |
| static void vt8231_init_device(struct vt8231_data *data) |
| { |
| vt8231_write_value(data, VT8231_REG_TEMP1_CONFIG, 0); |
| vt8231_write_value(data, VT8231_REG_TEMP2_CONFIG, 0); |
| } |
| |
| static struct vt8231_data *vt8231_update_device(struct device *dev) |
| { |
| struct vt8231_data *data = dev_get_drvdata(dev); |
| int i; |
| u16 low; |
| |
| mutex_lock(&data->update_lock); |
| |
| if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
| || !data->valid) { |
| for (i = 0; i < 6; i++) { |
| if (ISVOLT(i, data->uch_config)) { |
| data->in[i] = vt8231_read_value(data, |
| regvolt[i]); |
| data->in_min[i] = vt8231_read_value(data, |
| regvoltmin[i]); |
| data->in_max[i] = vt8231_read_value(data, |
| regvoltmax[i]); |
| } |
| } |
| for (i = 0; i < 2; i++) { |
| data->fan[i] = vt8231_read_value(data, |
| VT8231_REG_FAN(i)); |
| data->fan_min[i] = vt8231_read_value(data, |
| VT8231_REG_FAN_MIN(i)); |
| } |
| |
| low = vt8231_read_value(data, VT8231_REG_TEMP_LOW01); |
| low = (low >> 6) | ((low & 0x30) >> 2) |
| | (vt8231_read_value(data, VT8231_REG_TEMP_LOW25) << 4); |
| for (i = 0; i < 6; i++) { |
| if (ISTEMP(i, data->uch_config)) { |
| data->temp[i] = (vt8231_read_value(data, |
| regtemp[i]) << 2) |
| | ((low >> (2 * i)) & 0x03); |
| data->temp_max[i] = vt8231_read_value(data, |
| regtempmax[i]); |
| data->temp_min[i] = vt8231_read_value(data, |
| regtempmin[i]); |
| } |
| } |
| |
| i = vt8231_read_value(data, VT8231_REG_FANDIV); |
| data->fan_div[0] = (i >> 4) & 0x03; |
| data->fan_div[1] = i >> 6; |
| data->alarms = vt8231_read_value(data, VT8231_REG_ALARM1) | |
| (vt8231_read_value(data, VT8231_REG_ALARM2) << 8); |
| |
| /* Set alarm flags correctly */ |
| if (!data->fan[0] && data->fan_min[0]) |
| data->alarms |= 0x40; |
| else if (data->fan[0] && !data->fan_min[0]) |
| data->alarms &= ~0x40; |
| |
| if (!data->fan[1] && data->fan_min[1]) |
| data->alarms |= 0x80; |
| else if (data->fan[1] && !data->fan_min[1]) |
| data->alarms &= ~0x80; |
| |
| data->last_updated = jiffies; |
| data->valid = 1; |
| } |
| |
| mutex_unlock(&data->update_lock); |
| |
| return data; |
| } |
| |
| static int __devinit vt8231_device_add(unsigned short address) |
| { |
| struct resource res = { |
| .start = address, |
| .end = address + VT8231_EXTENT - 1, |
| .name = "vt8231", |
| .flags = IORESOURCE_IO, |
| }; |
| int err; |
| |
| err = acpi_check_resource_conflict(&res); |
| if (err) |
| goto exit; |
| |
| pdev = platform_device_alloc("vt8231", address); |
| if (!pdev) { |
| err = -ENOMEM; |
| pr_err("Device allocation failed\n"); |
| goto exit; |
| } |
| |
| err = platform_device_add_resources(pdev, &res, 1); |
| if (err) { |
| pr_err("Device resource addition failed (%d)\n", err); |
| goto exit_device_put; |
| } |
| |
| err = platform_device_add(pdev); |
| if (err) { |
| pr_err("Device addition failed (%d)\n", err); |
| goto exit_device_put; |
| } |
| |
| return 0; |
| |
| exit_device_put: |
| platform_device_put(pdev); |
| exit: |
| return err; |
| } |
| |
| static int __devinit vt8231_pci_probe(struct pci_dev *dev, |
| const struct pci_device_id *id) |
| { |
| u16 address, val; |
| if (force_addr) { |
| address = force_addr & 0xff00; |
| dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", |
| address); |
| |
| if (PCIBIOS_SUCCESSFUL != |
| pci_write_config_word(dev, VT8231_BASE_REG, address | 1)) |
| return -ENODEV; |
| } |
| |
| if (PCIBIOS_SUCCESSFUL != pci_read_config_word(dev, VT8231_BASE_REG, |
| &val)) |
| return -ENODEV; |
| |
| address = val & ~(VT8231_EXTENT - 1); |
| if (address == 0) { |
| dev_err(&dev->dev, "base address not set - upgrade BIOS or use force_addr=0xaddr\n"); |
| return -ENODEV; |
| } |
| |
| if (PCIBIOS_SUCCESSFUL != pci_read_config_word(dev, VT8231_ENABLE_REG, |
| &val)) |
| return -ENODEV; |
| |
| if (!(val & 0x0001)) { |
| dev_warn(&dev->dev, "enabling sensors\n"); |
| if (PCIBIOS_SUCCESSFUL != |
| pci_write_config_word(dev, VT8231_ENABLE_REG, |
| val | 0x0001)) |
| return -ENODEV; |
| } |
| |
| if (platform_driver_register(&vt8231_driver)) |
| goto exit; |
| |
| /* Sets global pdev as a side effect */ |
| if (vt8231_device_add(address)) |
| goto exit_unregister; |
| |
| /* |
| * 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. |
| */ |
| |
| /* |
| * We do, however, mark ourselves as using the PCI device to stop it |
| * getting unloaded. |
| */ |
| s_bridge = pci_dev_get(dev); |
| return -ENODEV; |
| |
| exit_unregister: |
| platform_driver_unregister(&vt8231_driver); |
| exit: |
| return -ENODEV; |
| } |
| |
| static int __init sm_vt8231_init(void) |
| { |
| return pci_register_driver(&vt8231_pci_driver); |
| } |
| |
| static void __exit sm_vt8231_exit(void) |
| { |
| pci_unregister_driver(&vt8231_pci_driver); |
| if (s_bridge != NULL) { |
| platform_device_unregister(pdev); |
| platform_driver_unregister(&vt8231_driver); |
| pci_dev_put(s_bridge); |
| s_bridge = NULL; |
| } |
| } |
| |
| MODULE_AUTHOR("Roger Lucas <vt8231@hiddenengine.co.uk>"); |
| MODULE_DESCRIPTION("VT8231 sensors"); |
| MODULE_LICENSE("GPL"); |
| |
| module_init(sm_vt8231_init); |
| module_exit(sm_vt8231_exit); |