summaryrefslogtreecommitdiffstats
path: root/drivers/hwmon/pc87427.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/hwmon/pc87427.c')
-rw-r--r--drivers/hwmon/pc87427.c862
1 files changed, 789 insertions, 73 deletions
diff --git a/drivers/hwmon/pc87427.c b/drivers/hwmon/pc87427.c
index 3170b26d244..9ec4daaf6ca 100644
--- a/drivers/hwmon/pc87427.c
+++ b/drivers/hwmon/pc87427.c
@@ -1,7 +1,7 @@
/*
* pc87427.c - hardware monitoring driver for the
* National Semiconductor PC87427 Super-I/O chip
- * Copyright (C) 2006 Jean Delvare <khali@linux-fr.org>
+ * Copyright (C) 2006, 2008, 2010 Jean Delvare <khali@linux-fr.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -15,10 +15,11 @@
* Supports the following chips:
*
* Chip #vin #fan #pwm #temp devid
- * PC87427 - 8 - - 0xF2
+ * PC87427 - 8 4 6 0xF2
*
* This driver assumes that no more than one chip is present.
- * Only fan inputs are supported so far, although the chip can do much more.
+ * Only fans are fully supported so far. Temperatures are in read-only
+ * mode, and voltages aren't supported at all.
*/
#include <linux/module.h>
@@ -57,6 +58,25 @@ struct pc87427_data {
u16 fan[8]; /* register values */
u16 fan_min[8]; /* register values */
u8 fan_status[8]; /* register values */
+
+ u8 pwm_enabled; /* bit vector */
+ u8 pwm_auto_ok; /* bit vector */
+ u8 pwm_enable[4]; /* register values */
+ u8 pwm[4]; /* register values */
+
+ u8 temp_enabled; /* bit vector */
+ s16 temp[6]; /* register values */
+ s8 temp_min[6]; /* register values */
+ s8 temp_max[6]; /* register values */
+ s8 temp_crit[6]; /* register values */
+ u8 temp_status[6]; /* register values */
+ u8 temp_type[6]; /* register values */
+};
+
+struct pc87427_sio_data {
+ unsigned short address[2];
+ u8 has_fanin;
+ u8 has_fanout;
};
/*
@@ -65,6 +85,13 @@ struct pc87427_data {
#define SIOREG_LDSEL 0x07 /* Logical device select */
#define SIOREG_DEVID 0x20 /* Device ID */
+#define SIOREG_CF2 0x22 /* Configuration 2 */
+#define SIOREG_CF3 0x23 /* Configuration 3 */
+#define SIOREG_CF4 0x24 /* Configuration 4 */
+#define SIOREG_CF5 0x25 /* Configuration 5 */
+#define SIOREG_CFB 0x2B /* Configuration B */
+#define SIOREG_CFC 0x2C /* Configuration C */
+#define SIOREG_CFD 0x2D /* Configuration D */
#define SIOREG_ACT 0x30 /* Device activation */
#define SIOREG_MAP 0x50 /* I/O or memory mapping */
#define SIOREG_IOBASE 0x60 /* I/O base address */
@@ -102,6 +129,8 @@ static inline void superio_exit(int sioaddr)
#define BANK_FM(nr) (nr)
#define BANK_FT(nr) (0x08 + (nr))
#define BANK_FC(nr) (0x10 + (nr) * 2)
+#define BANK_TM(nr) (nr)
+#define BANK_VM(nr) (0x08 + (nr))
/*
* I/O access functions
@@ -179,6 +208,127 @@ static inline u16 fan_to_reg(unsigned long val)
}
/*
+ * PWM registers and conversions
+ */
+
+#define PC87427_REG_PWM_ENABLE 0x10
+#define PC87427_REG_PWM_DUTY 0x12
+
+#define PWM_ENABLE_MODE_MASK (7 << 4)
+#define PWM_ENABLE_CTLEN (1 << 0)
+
+#define PWM_MODE_MANUAL (0 << 4)
+#define PWM_MODE_AUTO (1 << 4)
+#define PWM_MODE_OFF (2 << 4)
+#define PWM_MODE_ON (7 << 4)
+
+/* Dedicated function to read all registers related to a given PWM output.
+ This saves us quite a few locks and bank selections.
+ Must be called with data->lock held.
+ nr is from 0 to 3 */
+static void pc87427_readall_pwm(struct pc87427_data *data, u8 nr)
+{
+ int iobase = data->address[LD_FAN];
+
+ outb(BANK_FC(nr), iobase + PC87427_REG_BANK);
+ data->pwm_enable[nr] = inb(iobase + PC87427_REG_PWM_ENABLE);
+ data->pwm[nr] = inb(iobase + PC87427_REG_PWM_DUTY);
+}
+
+static inline int pwm_enable_from_reg(u8 reg)
+{
+ switch (reg & PWM_ENABLE_MODE_MASK) {
+ case PWM_MODE_ON:
+ return 0;
+ case PWM_MODE_MANUAL:
+ case PWM_MODE_OFF:
+ return 1;
+ case PWM_MODE_AUTO:
+ return 2;
+ default:
+ return -EPROTO;
+ }
+}
+
+static inline u8 pwm_enable_to_reg(unsigned long val, u8 pwmval)
+{
+ switch (val) {
+ default:
+ return PWM_MODE_ON;
+ case 1:
+ return pwmval ? PWM_MODE_MANUAL : PWM_MODE_OFF;
+ case 2:
+ return PWM_MODE_AUTO;
+ }
+}
+
+/*
+ * Temperature registers and conversions
+ */
+
+#define PC87427_REG_TEMP_STATUS 0x10
+#define PC87427_REG_TEMP 0x14
+#define PC87427_REG_TEMP_MAX 0x18
+#define PC87427_REG_TEMP_MIN 0x19
+#define PC87427_REG_TEMP_CRIT 0x1a
+#define PC87427_REG_TEMP_TYPE 0x1d
+
+#define TEMP_STATUS_CHANEN (1 << 0)
+#define TEMP_STATUS_LOWFLG (1 << 1)
+#define TEMP_STATUS_HIGHFLG (1 << 2)
+#define TEMP_STATUS_CRITFLG (1 << 3)
+#define TEMP_STATUS_SENSERR (1 << 5)
+#define TEMP_TYPE_MASK (3 << 5)
+
+#define TEMP_TYPE_THERMISTOR (1 << 5)
+#define TEMP_TYPE_REMOTE_DIODE (2 << 5)
+#define TEMP_TYPE_LOCAL_DIODE (3 << 5)
+
+/* Dedicated function to read all registers related to a given temperature
+ input. This saves us quite a few locks and bank selections.
+ Must be called with data->lock held.
+ nr is from 0 to 5 */
+static void pc87427_readall_temp(struct pc87427_data *data, u8 nr)
+{
+ int iobase = data->address[LD_TEMP];
+
+ outb(BANK_TM(nr), iobase + PC87427_REG_BANK);
+ data->temp[nr] = le16_to_cpu(inw(iobase + PC87427_REG_TEMP));
+ data->temp_max[nr] = inb(iobase + PC87427_REG_TEMP_MAX);
+ data->temp_min[nr] = inb(iobase + PC87427_REG_TEMP_MIN);
+ data->temp_crit[nr] = inb(iobase + PC87427_REG_TEMP_CRIT);
+ data->temp_type[nr] = inb(iobase + PC87427_REG_TEMP_TYPE);
+ data->temp_status[nr] = inb(iobase + PC87427_REG_TEMP_STATUS);
+ /* Clear fan alarm bits */
+ outb(data->temp_status[nr], iobase + PC87427_REG_TEMP_STATUS);
+}
+
+static inline unsigned int temp_type_from_reg(u8 reg)
+{
+ switch (reg & TEMP_TYPE_MASK) {
+ case TEMP_TYPE_THERMISTOR:
+ return 4;
+ case TEMP_TYPE_REMOTE_DIODE:
+ case TEMP_TYPE_LOCAL_DIODE:
+ return 3;
+ default:
+ return 0;
+ }
+}
+
+/* We assume 8-bit thermal sensors; 9-bit thermal sensors are possible
+ too, but I have no idea how to figure out when they are used. */
+static inline long temp_from_reg(s16 reg)
+{
+ return reg * 1000 / 256;
+}
+
+static inline long temp_from_reg8(s8 reg)
+{
+ return reg * 1000;
+}
+
+/*
* Data interface
*/
@@ -198,6 +348,21 @@ static struct pc87427_data *pc87427_update_device(struct device *dev)
continue;
pc87427_readall_fan(data, i);
}
+
+ /* PWM outputs */
+ for (i = 0; i < 4; i++) {
+ if (!(data->pwm_enabled & (1 << i)))
+ continue;
+ pc87427_readall_pwm(data, i);
+ }
+
+ /* Temperature channels */
+ for (i = 0; i < 6; i++) {
+ if (!(data->temp_enabled & (1 << i)))
+ continue;
+ pc87427_readall_temp(data, i);
+ }
+
data->last_updated = jiffies;
done:
@@ -208,9 +373,8 @@ done:
static ssize_t show_fan_input(struct device *dev, struct device_attribute
*devattr, char *buf)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87427_data *data = pc87427_update_device(dev);
- int nr = attr->index;
+ int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%lu\n", fan_from_reg(data->fan[nr]));
}
@@ -218,9 +382,8 @@ static ssize_t show_fan_input(struct device *dev, struct device_attribute
static ssize_t show_fan_min(struct device *dev, struct device_attribute
*devattr, char *buf)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87427_data *data = pc87427_update_device(dev);
- int nr = attr->index;
+ int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%lu\n", fan_from_reg(data->fan_min[nr]));
}
@@ -228,9 +391,8 @@ static ssize_t show_fan_min(struct device *dev, struct device_attribute
static ssize_t show_fan_alarm(struct device *dev, struct device_attribute
*devattr, char *buf)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87427_data *data = pc87427_update_device(dev);
- int nr = attr->index;
+ int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", !!(data->fan_status[nr]
& FAN_STATUS_LOSPD));
@@ -239,9 +401,8 @@ static ssize_t show_fan_alarm(struct device *dev, struct device_attribute
static ssize_t show_fan_fault(struct device *dev, struct device_attribute
*devattr, char *buf)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87427_data *data = pc87427_update_device(dev);
- int nr = attr->index;
+ int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", !!(data->fan_status[nr]
& FAN_STATUS_STALL));
@@ -251,11 +412,13 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct pc87427_data *data = dev_get_drvdata(dev);
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- int nr = attr->index;
- unsigned long val = simple_strtoul(buf, NULL, 10);
+ int nr = to_sensor_dev_attr(devattr)->index;
+ unsigned long val;
int iobase = data->address[LD_FAN];
+ if (strict_strtoul(buf, 10, &val) < 0)
+ return -EINVAL;
+
mutex_lock(&data->lock);
outb(BANK_FM(nr), iobase + PC87427_REG_BANK);
/* The low speed limit registers are read-only while monitoring
@@ -377,6 +540,390 @@ static const struct attribute_group pc87427_group_fan[8] = {
{ .attrs = pc87427_attributes_fan[7] },
};
+/* Must be called with data->lock held and pc87427_readall_pwm() freshly
+ called */
+static void update_pwm_enable(struct pc87427_data *data, int nr, u8 mode)
+{
+ int iobase = data->address[LD_FAN];
+ data->pwm_enable[nr] &= ~PWM_ENABLE_MODE_MASK;
+ data->pwm_enable[nr] |= mode;
+ outb(data->pwm_enable[nr], iobase + PC87427_REG_PWM_ENABLE);
+}
+
+static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
+ *devattr, char *buf)
+{
+ struct pc87427_data *data = pc87427_update_device(dev);
+ int nr = to_sensor_dev_attr(devattr)->index;
+ int pwm_enable;
+
+ pwm_enable = pwm_enable_from_reg(data->pwm_enable[nr]);
+ if (pwm_enable < 0)
+ return pwm_enable;
+ return sprintf(buf, "%d\n", pwm_enable);
+}
+
+static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
+ *devattr, const char *buf, size_t count)
+{
+ struct pc87427_data *data = dev_get_drvdata(dev);
+ int nr = to_sensor_dev_attr(devattr)->index;
+ unsigned long val;
+
+ if (strict_strtoul(buf, 10, &val) < 0 || val > 2)
+ return -EINVAL;
+ /* Can't go to automatic mode if it isn't configured */
+ if (val == 2 && !(data->pwm_auto_ok & (1 << nr)))
+ return -EINVAL;
+
+ mutex_lock(&data->lock);
+ pc87427_readall_pwm(data, nr);
+ update_pwm_enable(data, nr, pwm_enable_to_reg(val, data->pwm[nr]));
+ mutex_unlock(&data->lock);
+
+ return count;
+}
+
+static ssize_t show_pwm(struct device *dev, struct device_attribute
+ *devattr, char *buf)
+{
+ struct pc87427_data *data = pc87427_update_device(dev);
+ int nr = to_sensor_dev_attr(devattr)->index;
+
+ return sprintf(buf, "%d\n", (int)data->pwm[nr]);
+}
+
+static ssize_t set_pwm(struct device *dev, struct device_attribute
+ *devattr, const char *buf, size_t count)
+{
+ struct pc87427_data *data = dev_get_drvdata(dev);
+ int nr = to_sensor_dev_attr(devattr)->index;
+ unsigned long val;
+ int iobase = data->address[LD_FAN];
+ u8 mode;
+
+ if (strict_strtoul(buf, 10, &val) < 0 || val > 0xff)
+ return -EINVAL;
+
+ mutex_lock(&data->lock);
+ pc87427_readall_pwm(data, nr);
+ mode = data->pwm_enable[nr] & PWM_ENABLE_MODE_MASK;
+ if (mode != PWM_MODE_MANUAL && mode != PWM_MODE_OFF) {
+ dev_notice(dev, "Can't set PWM%d duty cycle while not in "
+ "manual mode\n", nr + 1);
+ mutex_unlock(&data->lock);
+ return -EPERM;
+ }
+
+ /* We may have to change the mode */
+ if (mode == PWM_MODE_MANUAL && val == 0) {
+ /* Transition from Manual to Off */
+ update_pwm_enable(data, nr, PWM_MODE_OFF);
+ mode = PWM_MODE_OFF;
+ dev_dbg(dev, "Switching PWM%d from %s to %s\n", nr + 1,
+ "manual", "off");
+ } else if (mode == PWM_MODE_OFF && val != 0) {
+ /* Transition from Off to Manual */
+ update_pwm_enable(data, nr, PWM_MODE_MANUAL);
+ mode = PWM_MODE_MANUAL;
+ dev_dbg(dev, "Switching PWM%d from %s to %s\n", nr + 1,
+ "off", "manual");
+ }
+
+ data->pwm[nr] = val;
+ if (mode == PWM_MODE_MANUAL)
+ outb(val, iobase + PC87427_REG_PWM_DUTY);
+ mutex_unlock(&data->lock);
+
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
+ show_pwm_enable, set_pwm_enable, 0);
+static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
+ show_pwm_enable, set_pwm_enable, 1);
+static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
+ show_pwm_enable, set_pwm_enable, 2);
+static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO,
+ show_pwm_enable, set_pwm_enable, 3);
+
+static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0);
+static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1);
+static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2);
+static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3);
+
+static struct attribute *pc87427_attributes_pwm[4][3] = {
+ {
+ &sensor_dev_attr_pwm1_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm1.dev_attr.attr,
+ NULL
+ }, {
+ &sensor_dev_attr_pwm2_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm2.dev_attr.attr,
+ NULL
+ }, {
+ &sensor_dev_attr_pwm3_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm3.dev_attr.attr,
+ NULL
+ }, {
+ &sensor_dev_attr_pwm4_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm4.dev_attr.attr,
+ NULL
+ }
+};
+
+static const struct attribute_group pc87427_group_pwm[4] = {
+ { .attrs = pc87427_attributes_pwm[0] },
+ { .attrs = pc87427_attributes_pwm[1] },
+ { .attrs = pc87427_attributes_pwm[2] },
+ { .attrs = pc87427_attributes_pwm[3] },
+};
+
+static ssize_t show_temp_input(struct device *dev, struct device_attribute
+ *devattr, char *buf)
+{
+ struct pc87427_data *data = pc87427_update_device(dev);
+ int nr = to_sensor_dev_attr(devattr)->index;
+
+ return sprintf(buf, "%ld\n", temp_from_reg(data->temp[nr]));
+}
+
+static ssize_t show_temp_min(struct device *dev, struct device_attribute
+ *devattr, char *buf)
+{
+ struct pc87427_data *data = pc87427_update_device(dev);
+ int nr = to_sensor_dev_attr(devattr)->index;
+
+ return sprintf(buf, "%ld\n", temp_from_reg8(data->temp_min[nr]));
+}
+
+static ssize_t show_temp_max(struct device *dev, struct device_attribute
+ *devattr, char *buf)
+{
+ struct pc87427_data *data = pc87427_update_device(dev);
+ int nr = to_sensor_dev_attr(devattr)->index;
+
+ return sprintf(buf, "%ld\n", temp_from_reg8(data->temp_max[nr]));
+}
+
+static ssize_t show_temp_crit(struct device *dev, struct device_attribute
+ *devattr, char *buf)
+{
+ struct pc87427_data *data = pc87427_update_device(dev);
+ int nr = to_sensor_dev_attr(devattr)->index;
+
+ return sprintf(buf, "%ld\n", temp_from_reg8(data->temp_crit[nr]));
+}
+
+static ssize_t show_temp_type(struct device *dev, struct device_attribute
+ *devattr, char *buf)
+{
+ struct pc87427_data *data = pc87427_update_device(dev);
+ int nr = to_sensor_dev_attr(devattr)->index;
+
+ return sprintf(buf, "%u\n", temp_type_from_reg(data->temp_type[nr]));
+}
+
+static ssize_t show_temp_min_alarm(struct device *dev, struct device_attribute
+ *devattr, char *buf)
+{
+ struct pc87427_data *data = pc87427_update_device(dev);
+ int nr = to_sensor_dev_attr(devattr)->index;
+
+ return sprintf(buf, "%d\n", !!(data->temp_status[nr]
+ & TEMP_STATUS_LOWFLG));
+}
+
+static ssize_t show_temp_max_alarm(struct device *dev, struct device_attribute
+ *devattr, char *buf)
+{
+ struct pc87427_data *data = pc87427_update_device(dev);
+ int nr = to_sensor_dev_attr(devattr)->index;
+
+ return sprintf(buf, "%d\n", !!(data->temp_status[nr]
+ & TEMP_STATUS_HIGHFLG));
+}
+
+static ssize_t show_temp_crit_alarm(struct device *dev, struct device_attribute
+ *devattr, char *buf)
+{
+ struct pc87427_data *data = pc87427_update_device(dev);
+ int nr = to_sensor_dev_attr(devattr)->index;
+
+ return sprintf(buf, "%d\n", !!(data->temp_status[nr]
+ & TEMP_STATUS_CRITFLG));
+}
+
+static ssize_t show_temp_fault(struct device *dev, struct device_attribute
+ *devattr, char *buf)
+{
+ struct pc87427_data *data = pc87427_update_device(dev);
+ int nr = to_sensor_dev_attr(devattr)->index;
+
+ return sprintf(buf, "%d\n", !!(data->temp_status[nr]
+ & TEMP_STATUS_SENSERR));
+}
+
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp_input, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp_input, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp_input, NULL, 5);
+
+static SENSOR_DEVICE_ATTR(temp1_min, S_IRUGO, show_temp_min, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_min, S_IRUGO, show_temp_min, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_min, S_IRUGO, show_temp_min, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp4_min, S_IRUGO, show_temp_min, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp5_min, S_IRUGO, show_temp_min, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp6_min, S_IRUGO, show_temp_min, NULL, 5);
+
+static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_max, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO, show_temp_max, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_max, S_IRUGO, show_temp_max, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp4_max, S_IRUGO, show_temp_max, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp5_max, S_IRUGO, show_temp_max, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp6_max, S_IRUGO, show_temp_max, NULL, 5);
+
+static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp4_crit, S_IRUGO, show_temp_crit, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp5_crit, S_IRUGO, show_temp_crit, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp6_crit, S_IRUGO, show_temp_crit, NULL, 5);
+
+static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp4_type, S_IRUGO, show_temp_type, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp5_type, S_IRUGO, show_temp_type, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp6_type, S_IRUGO, show_temp_type, NULL, 5);
+
+static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO,
+ show_temp_min_alarm, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO,
+ show_temp_min_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_min_alarm, S_IRUGO,
+ show_temp_min_alarm, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp4_min_alarm, S_IRUGO,
+ show_temp_min_alarm, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp5_min_alarm, S_IRUGO,
+ show_temp_min_alarm, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp6_min_alarm, S_IRUGO,
+ show_temp_min_alarm, NULL, 5);
+
+static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO,
+ show_temp_max_alarm, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO,
+ show_temp_max_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_max_alarm, S_IRUGO,
+ show_temp_max_alarm, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp4_max_alarm, S_IRUGO,
+ show_temp_max_alarm, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp5_max_alarm, S_IRUGO,
+ show_temp_max_alarm, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp6_max_alarm, S_IRUGO,
+ show_temp_max_alarm, NULL, 5);
+
+static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO,
+ show_temp_crit_alarm, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO,
+ show_temp_crit_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_crit_alarm, S_IRUGO,
+ show_temp_crit_alarm, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp4_crit_alarm, S_IRUGO,
+ show_temp_crit_alarm, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp5_crit_alarm, S_IRUGO,
+ show_temp_crit_alarm, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp6_crit_alarm, S_IRUGO,
+ show_temp_crit_alarm, NULL, 5);
+
+static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_temp_fault, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_temp_fault, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp6_fault, S_IRUGO, show_temp_fault, NULL, 5);
+
+static struct attribute *pc87427_attributes_temp[6][10] = {
+ {
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_min.dev_attr.attr,
+ &sensor_dev_attr_temp1_max.dev_attr.attr,
+ &sensor_dev_attr_temp1_crit.dev_attr.attr,
+ &sensor_dev_attr_temp1_type.dev_attr.attr,
+ &sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_fault.dev_attr.attr,
+ NULL
+ }, {
+ &sensor_dev_attr_temp2_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_min.dev_attr.attr,
+ &sensor_dev_attr_temp2_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_crit.dev_attr.attr,
+ &sensor_dev_attr_temp2_type.dev_attr.attr,
+ &sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_fault.dev_attr.attr,
+ NULL
+ }, {
+ &sensor_dev_attr_temp3_input.dev_attr.attr,
+ &sensor_dev_attr_temp3_min.dev_attr.attr,
+ &sensor_dev_attr_temp3_max.dev_attr.attr,
+ &sensor_dev_attr_temp3_crit.dev_attr.attr,
+ &sensor_dev_attr_temp3_type.dev_attr.attr,
+ &sensor_dev_attr_temp3_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_fault.dev_attr.attr,
+ NULL
+ }, {
+ &sensor_dev_attr_temp4_input.dev_attr.attr,
+ &sensor_dev_attr_temp4_min.dev_attr.attr,
+ &sensor_dev_attr_temp4_max.dev_attr.attr,
+ &sensor_dev_attr_temp4_crit.dev_attr.attr,
+ &sensor_dev_attr_temp4_type.dev_attr.attr,
+ &sensor_dev_attr_temp4_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp4_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp4_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp4_fault.dev_attr.attr,
+ NULL
+ }, {
+ &sensor_dev_attr_temp5_input.dev_attr.attr,
+ &sensor_dev_attr_temp5_min.dev_attr.attr,
+ &sensor_dev_attr_temp5_max.dev_attr.attr,
+ &sensor_dev_attr_temp5_crit.dev_attr.attr,
+ &sensor_dev_attr_temp5_type.dev_attr.attr,
+ &sensor_dev_attr_temp5_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp5_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp5_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp5_fault.dev_attr.attr,
+ NULL
+ }, {
+ &sensor_dev_attr_temp6_input.dev_attr.attr,
+ &sensor_dev_attr_temp6_min.dev_attr.attr,
+ &sensor_dev_attr_temp6_max.dev_attr.attr,
+ &sensor_dev_attr_temp6_crit.dev_attr.attr,
+ &sensor_dev_attr_temp6_type.dev_attr.attr,
+ &sensor_dev_attr_temp6_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp6_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp6_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp6_fault.dev_attr.attr,
+ NULL
+ }
+};
+
+static const struct attribute_group pc87427_group_temp[6] = {
+ { .attrs = pc87427_attributes_temp[0] },
+ { .attrs = pc87427_attributes_temp[1] },
+ { .attrs = pc87427_attributes_temp[2] },
+ { .attrs = pc87427_attributes_temp[3] },
+ { .attrs = pc87427_attributes_temp[4] },
+ { .attrs = pc87427_attributes_temp[5] },
+};
+
static ssize_t show_name(struct device *dev, struct device_attribute
*devattr, char *buf)
{
@@ -391,8 +938,49 @@ static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
* Device detection, attach and detach
*/
+static void pc87427_release_regions(struct platform_device *pdev, int count)
+{
+ struct resource *res;
+ int i;
+
+ for (i = 0; i < count; i++) {
+ res = platform_get_resource(pdev, IORESOURCE_IO, i);
+ release_region(res->start, resource_size(res));
+ }
+}
+
+static int __devinit pc87427_request_regions(struct platform_device *pdev,
+ int count)
+{
+ struct resource *res;
+ int i, err = 0;
+
+ for (i = 0; i < count; i++) {
+ res = platform_get_resource(pdev, IORESOURCE_IO, i);
+ if (!res) {
+ err = -ENOENT;
+ dev_err(&pdev->dev, "Missing resource #%d\n", i);
+ break;
+ }
+ if (!request_region(res->start, resource_size(res), DRVNAME)) {
+ err = -EBUSY;
+ dev_err(&pdev->dev,
+ "Failed to request region 0x%lx-0x%lx\n",
+ (unsigned long)res->start,
+ (unsigned long)res->end);
+ break;
+ }
+ }
+
+ if (err && i)
+ pc87427_release_regions(pdev, i);
+
+ return err;
+}
+
static void __devinit pc87427_init_device(struct device *dev)
{
+ struct pc87427_sio_data *sio_data = dev->platform_data;
struct pc87427_data *data = dev_get_drvdata(dev);
int i;
u8 reg;
@@ -400,10 +988,12 @@ static void __devinit pc87427_init_device(struct device *dev)
/* The FMC module should be ready */
reg = pc87427_read8(data, LD_FAN, PC87427_REG_BANK);
if (!(reg & 0x80))
- dev_warn(dev, "FMC module not ready!\n");
+ dev_warn(dev, "%s module not ready!\n", "FMC");
/* Check which fans are enabled */
for (i = 0; i < 8; i++) {
+ if (!(sio_data->has_fanin & (1 << i))) /* Not wired */
+ continue;
reg = pc87427_read8_bank(data, LD_FAN, BANK_FM(i),
PC87427_REG_FAN_STATUS);
if (reg & FAN_STATUS_MONEN)
@@ -411,37 +1001,93 @@ static void __devinit pc87427_init_device(struct device *dev)
}
if (!data->fan_enabled) {
- dev_dbg(dev, "Enabling all fan inputs\n");
- for (i = 0; i < 8; i++)
+ dev_dbg(dev, "Enabling monitoring of all fans\n");
+ for (i = 0; i < 8; i++) {
+ if (!(sio_data->has_fanin & (1 << i))) /* Not wired */
+ continue;
pc87427_write8_bank(data, LD_FAN, BANK_FM(i),
PC87427_REG_FAN_STATUS,
FAN_STATUS_MONEN);
- data->fan_enabled = 0xff;
+ }
+ data->fan_enabled = sio_data->has_fanin;
+ }
+
+ /* Check which PWM outputs are enabled */
+ for (i = 0; i < 4; i++) {
+ if (!(sio_data->has_fanout & (1 << i))) /* Not wired */
+ continue;
+ reg = pc87427_read8_bank(data, LD_FAN, BANK_FC(i),
+ PC87427_REG_PWM_ENABLE);
+ if (reg & PWM_ENABLE_CTLEN)
+ data->pwm_enabled |= (1 << i);
+
+ /* We don't expose an interface to reconfigure the automatic
+ fan control mode, so only allow to return to this mode if
+ it was originally set. */
+ if ((reg & PWM_ENABLE_MODE_MASK) == PWM_MODE_AUTO) {
+ dev_dbg(dev, "PWM%d is in automatic control mode\n",
+ i + 1);
+ data->pwm_auto_ok |= (1 << i);
+ }
+ }
+
+ /* The HMC module should be ready */
+ reg = pc87427_read8(data, LD_TEMP, PC87427_REG_BANK);
+ if (!(reg & 0x80))
+ dev_warn(dev, "%s module not ready!\n", "HMC");
+
+ /* Check which temperature channels are enabled */
+ for (i = 0; i < 6; i++) {
+ reg = pc87427_read8_bank(data, LD_TEMP, BANK_TM(i),
+ PC87427_REG_TEMP_STATUS);
+ if (reg & TEMP_STATUS_CHANEN)
+ data->temp_enabled |= (1 << i);
+ }
+}
+
+static void pc87427_remove_files(struct device *dev)
+{
+ struct pc87427_data *data = dev_get_drvdata(dev);
+ int i;
+
+ device_remove_file(dev, &dev_attr_name);
+ for (i = 0; i < 8; i++) {
+ if (!(data->fan_enabled & (1 << i)))
+ continue;
+ sysfs_remove_group(&dev->kobj, &pc87427_group_fan[i]);
+ }
+ for (i = 0; i < 4; i++) {
+ if (!(data->pwm_enabled & (1 << i)))
+ continue;
+ sysfs_remove_group(&dev->kobj, &pc87427_group_pwm[i]);
+ }
+ for (i = 0; i < 6; i++) {
+ if (!(data->temp_enabled & (1 << i)))
+ continue;
+ sysfs_remove_group(&dev->kobj, &pc87427_group_temp[i]);
}
}
static int __devinit pc87427_probe(struct platform_device *pdev)
{
+ struct pc87427_sio_data *sio_data = pdev->dev.platform_data;
struct pc87427_data *data;
- struct resource *res;
- int i, err;
+ int i, err, res_count;
- if (!(data = kzalloc(sizeof(struct pc87427_data), GFP_KERNEL))) {
+ data = kzalloc(sizeof(struct pc87427_data), GFP_KERNEL);
+ if (!data) {
err = -ENOMEM;
printk(KERN_ERR DRVNAME ": Out of memory\n");
goto exit;
}
- /* This will need to be revisited when we add support for
- temperature and voltage monitoring. */
- res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- if (!request_region(res->start, resource_size(res), DRVNAME)) {
- err = -EBUSY;
- dev_err(&pdev->dev, "Failed to request region 0x%lx-0x%lx\n",
- (unsigned long)res->start, (unsigned long)res->end);
+ data->address[0] = sio_data->address[0];
+ data->address[1] = sio_data->address[1];
+ res_count = (data->address[0] != 0) + (data->address[1] != 0);
+
+ err = pc87427_request_regions(pdev, res_count);
+ if (err)
goto exit_kfree;
- }
- data->address[0] = res->start;
mutex_init(&data->lock);
data->name = "pc87427";
@@ -449,13 +1095,31 @@ static int __devinit pc87427_probe(struct platform_device *pdev)
pc87427_init_device(&pdev->dev);
/* Register sysfs hooks */
- if ((err = device_create_file(&pdev->dev, &dev_attr_name)))
+ err = device_create_file(&pdev->dev, &dev_attr_name);
+ if (err)
goto exit_release_region;
for (i = 0; i < 8; i++) {
if (!(data->fan_enabled & (1 << i)))
continue;
- if ((err = sysfs_create_group(&pdev->dev.kobj,
- &pc87427_group_fan[i])))
+ err = sysfs_create_group(&pdev->dev.kobj,
+ &pc87427_group_fan[i]);
+ if (err)
+ goto exit_remove_files;
+ }
+ for (i = 0; i < 4; i++) {
+ if (!(data->pwm_enabled & (1 << i)))
+ continue;
+ err = sysfs_create_group(&pdev->dev.kobj,
+ &pc87427_group_pwm[i]);
+ if (err)
+ goto exit_remove_files;
+ }
+ for (i = 0; i < 6; i++) {
+ if (!(data->temp_enabled & (1 << i)))
+ continue;
+ err = sysfs_create_group(&pdev->dev.kobj,
+ &pc87427_group_temp[i]);
+ if (err)
goto exit_remove_files;
}
@@ -469,13 +1133,9 @@ static int __devinit pc87427_probe(struct platform_device *pdev)
return 0;
exit_remove_files:
- for (i = 0; i < 8; i++) {
- if (!(data->fan_enabled & (1 << i)))
- continue;
- sysfs_remove_group(&pdev->dev.kobj, &pc87427_group_fan[i]);
- }
+ pc87427_remove_files(&pdev->dev);
exit_release_region:
- release_region(res->start, resource_size(res));
+ pc87427_release_regions(pdev, res_count);
exit_kfree:
platform_set_drvdata(pdev, NULL);
kfree(data);
@@ -486,21 +1146,16 @@ exit:
static int __devexit pc87427_remove(struct platform_device *pdev)
{
struct pc87427_data *data = platform_get_drvdata(pdev);
- struct resource *res;
- int i;
+ int res_count;
+
+ res_count = (data->address[0] != 0) + (data->address[1] != 0);
hwmon_device_unregister(data->hwmon_dev);
- device_remove_file(&pdev->dev, &dev_attr_name);
- for (i = 0; i < 8; i++) {
- if (!(data->fan_enabled & (1 << i)))
- continue;
- sysfs_remove_group(&pdev->dev.kobj, &pc87427_group_fan[i]);
- }
+ pc87427_remove_files(&pdev->dev);
platform_set_drvdata(pdev, NULL);
kfree(data);
- res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- release_region(res->start, resource_size(res));
+ pc87427_release_regions(pdev, res_count);
return 0;
}
@@ -515,34 +1170,50 @@ static struct platform_driver pc87427_driver = {
.remove = __devexit_p(pc87427_remove),
};
-static int __init pc87427_device_add(unsigned short address)
+static int __init pc87427_device_add(const struct pc87427_sio_data *sio_data)
{
- struct resource res = {
- .start = address,
- .end = address + REGION_LENGTH - 1,
- .name = logdev_str[0],
- .flags = IORESOURCE_IO,
+ struct resource res[2] = {
+ { .flags = IORESOURCE_IO },
+ { .flags = IORESOURCE_IO },
};
- int err;
+ int err, i, res_count;
- err = acpi_check_resource_conflict(&res);
- if (err)
- goto exit;
+ res_count = 0;
+ for (i = 0; i < 2; i++) {
+ if (!sio_data->address[i])
+ continue;
+ res[res_count].start = sio_data->address[i];
+ res[res_count].end = sio_data->address[i] + REGION_LENGTH - 1;
+ res[res_count].name = logdev_str[i];
- pdev = platform_device_alloc(DRVNAME, address);
+ err = acpi_check_resource_conflict(&res[res_count]);
+ if (err)
+ goto exit;
+
+ res_count++;
+ }
+
+ pdev = platform_device_alloc(DRVNAME, res[0].start);
if (!pdev) {
err = -ENOMEM;
printk(KERN_ERR DRVNAME ": Device allocation failed\n");
goto exit;
}
- err = platform_device_add_resources(pdev, &res, 1);
+ err = platform_device_add_resources(pdev, res, res_count);
if (err) {
printk(KERN_ERR DRVNAME ": Device resource addition failed "
"(%d)\n", err);
goto exit_device_put;
}
+ err = platform_device_add_data(pdev, sio_data,
+ sizeof(struct pc87427_sio_data));
+ if (err) {
+ printk(KERN_ERR DRVNAME ": Platform data allocation failed\n");
+ goto exit_device_put;
+ }
+
err = platform_device_add(pdev);
if (err) {
printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
@@ -558,9 +1229,10 @@ exit:
return err;
}
-static int __init pc87427_find(int sioaddr, unsigned short *address)
+static int __init pc87427_find(int sioaddr, struct pc87427_sio_data *sio_data)
{
u16 val;
+ u8 cfg, cfg_b;
int i, err = 0;
/* Identify device */
@@ -571,7 +1243,7 @@ static int __init pc87427_find(int sioaddr, unsigned short *address)
}
for (i = 0; i < 2; i++) {
- address[i] = 0;
+ sio_data->address[i] = 0;
/* Select logical device */
superio_outb(sioaddr, SIOREG_LDSEL, logdev[i]);
@@ -596,9 +1268,58 @@ static int __init pc87427_find(int sioaddr, unsigned short *address)
"for logical device 0x%02x\n", logdev[i]);
continue;
}
- address[i] = val;
+ sio_data->address[i] = val;
}
+ /* No point in loading the driver if everything is disabled */
+ if (!sio_data->address[0] && !sio_data->address[1]) {
+ err = -ENODEV;
+ goto exit;
+ }
+
+ /* Check which fan inputs are wired */
+ sio_data->has_fanin = (1 << 2) | (1 << 3); /* FANIN2, FANIN3 */
+
+ cfg = superio_inb(sioaddr, SIOREG_CF2);
+ if (!(cfg & (1 << 3)))
+ sio_data->has_fanin |= (1 << 0); /* FANIN0 */
+ if (!(cfg & (1 << 2)))
+ sio_data->has_fanin |= (1 << 4); /* FANIN4 */
+
+ cfg = superio_inb(sioaddr, SIOREG_CFD);
+ if (!(cfg & (1 << 0)))
+ sio_data->has_fanin |= (1 << 1); /* FANIN1 */
+
+ cfg = superio_inb(sioaddr, SIOREG_CF4);
+ if (!(cfg & (1 << 0)))
+ sio_data->has_fanin |= (1 << 7); /* FANIN7 */
+ cfg_b = superio_inb(sioaddr, SIOREG_CFB);
+ if (!(cfg & (1 << 1)) && (cfg_b & (1 << 3)))
+ sio_data->has_fanin |= (1 << 5); /* FANIN5 */
+ cfg = superio_inb(sioaddr, SIOREG_CF3);
+ if ((cfg & (1 << 3)) && !(cfg_b & (1 << 5)))
+ sio_data->has_fanin |= (1 << 6); /* FANIN6 */
+
+ /* Check which fan outputs are wired */
+ sio_data->has_fanout = (1 << 0); /* FANOUT0 */
+ if (cfg_b & (1 << 0))
+ sio_data->has_fanout |= (1 << 3); /* FANOUT3 */
+
+ cfg = superio_inb(sioaddr, SIOREG_CFC);
+ if (!(cfg & (1 << 4))) {
+ if (cfg_b & (1 << 1))
+ sio_data->has_fanout |= (1 << 1); /* FANOUT1 */
+ if (cfg_b & (1 << 2))
+ sio_data->has_fanout |= (1 << 2); /* FANOUT2 */
+ }
+
+ /* FANOUT1 and FANOUT2 can each be routed to 2 different pins */
+ cfg = superio_inb(sioaddr, SIOREG_CF5);
+ if (cfg & (1 << 6))
+ sio_data->has_fanout |= (1 << 1); /* FANOUT1 */
+ if (cfg & (1 << 5))
+ sio_data->has_fanout |= (1 << 2); /* FANOUT2 */
+
exit:
superio_exit(sioaddr);
return err;
@@ -607,15 +1328,10 @@ exit:
static int __init pc87427_init(void)
{
int err;
- unsigned short address[2];
-
- if (pc87427_find(0x2e, address)
- && pc87427_find(0x4e, address))
- return -ENODEV;
+ struct pc87427_sio_data sio_data;
- /* For now the driver only handles fans so we only care about the
- first address. */
- if (!address[0])
+ if (pc87427_find(0x2e, &sio_data)
+ && pc87427_find(0x4e, &sio_data))
return -ENODEV;
err = platform_driver_register(&pc87427_driver);
@@ -623,7 +1339,7 @@ static int __init pc87427_init(void)
goto exit;
/* Sets global pdev as a side effect */
- err = pc87427_device_add(address[0]);
+ err = pc87427_device_add(&sio_data);
if (err)
goto exit_driver;
generated by cgit v1.2.1-2-g3f67 (git 2.18.0) at 2024-04-18 13:25:27 +0000