switch lookup_mnt()
[linux-2.6.git] / drivers / hwmon / pc87360.c
index 3a7d7fa..fb052fe 100644 (file)
@@ -43,6 +43,7 @@
 #include <linux/hwmon-vid.h>
 #include <linux/err.h>
 #include <linux/mutex.h>
+#include <linux/acpi.h>
 #include <asm/io.h>
 
 static u8 devid;
@@ -75,7 +76,8 @@ MODULE_PARM_DESC(force_id, "Override the detected device ID");
 #define FSCM   0x09    /* Logical device: fans */
 #define VLM    0x0d    /* Logical device: voltages */
 #define TMS    0x0e    /* Logical device: temperatures */
-static const u8 logdev[3] = { FSCM, VLM, TMS };
+#define LDNI_MAX 3
+static const u8 logdev[LDNI_MAX] = { FSCM, VLM, TMS };
 
 #define LD_FAN         0
 #define LD_IN          1
@@ -713,12 +715,68 @@ static struct sensor_device_attribute therm_crit[] = {
                    show_therm_crit, set_therm_crit, 2+11),
 };
 
+/* show_therm_min/max_alarm() reads data from the per-channel voltage
+   status register (sec 11.5.12) */
+
+static ssize_t show_therm_min_alarm(struct device *dev,
+                               struct device_attribute *devattr, char *buf)
+{
+       struct pc87360_data *data = pc87360_update_device(dev);
+       unsigned nr = to_sensor_dev_attr(devattr)->index;
+
+       return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
+}
+static ssize_t show_therm_max_alarm(struct device *dev,
+                               struct device_attribute *devattr, char *buf)
+{
+       struct pc87360_data *data = pc87360_update_device(dev);
+       unsigned nr = to_sensor_dev_attr(devattr)->index;
+
+       return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
+}
+static ssize_t show_therm_crit_alarm(struct device *dev,
+                               struct device_attribute *devattr, char *buf)
+{
+       struct pc87360_data *data = pc87360_update_device(dev);
+       unsigned nr = to_sensor_dev_attr(devattr)->index;
+
+       return sprintf(buf, "%u\n", !!(data->in_status[nr] & TEMP_ALM_CRIT));
+}
+
+static struct sensor_device_attribute therm_min_alarm[] = {
+       SENSOR_ATTR(temp4_min_alarm, S_IRUGO,
+                   show_therm_min_alarm, NULL, 0+11),
+       SENSOR_ATTR(temp5_min_alarm, S_IRUGO,
+                   show_therm_min_alarm, NULL, 1+11),
+       SENSOR_ATTR(temp6_min_alarm, S_IRUGO,
+                   show_therm_min_alarm, NULL, 2+11),
+};
+static struct sensor_device_attribute therm_max_alarm[] = {
+       SENSOR_ATTR(temp4_max_alarm, S_IRUGO,
+                   show_therm_max_alarm, NULL, 0+11),
+       SENSOR_ATTR(temp5_max_alarm, S_IRUGO,
+                   show_therm_max_alarm, NULL, 1+11),
+       SENSOR_ATTR(temp6_max_alarm, S_IRUGO,
+                   show_therm_max_alarm, NULL, 2+11),
+};
+static struct sensor_device_attribute therm_crit_alarm[] = {
+       SENSOR_ATTR(temp4_crit_alarm, S_IRUGO,
+                   show_therm_crit_alarm, NULL, 0+11),
+       SENSOR_ATTR(temp5_crit_alarm, S_IRUGO,
+                   show_therm_crit_alarm, NULL, 1+11),
+       SENSOR_ATTR(temp6_crit_alarm, S_IRUGO,
+                   show_therm_crit_alarm, NULL, 2+11),
+};
+
 #define THERM_UNIT_ATTRS(X) \
        &therm_input[X].dev_attr.attr,  \
        &therm_status[X].dev_attr.attr, \
        &therm_min[X].dev_attr.attr,    \
        &therm_max[X].dev_attr.attr,    \
-       &therm_crit[X].dev_attr.attr
+       &therm_crit[X].dev_attr.attr,   \
+       &therm_min_alarm[X].dev_attr.attr, \
+       &therm_max_alarm[X].dev_attr.attr, \
+       &therm_crit_alarm[X].dev_attr.attr
 
 static struct attribute * pc8736x_therm_attr_array[] = {
        THERM_UNIT_ATTRS(0),
@@ -845,12 +903,76 @@ static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *att
 }
 static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
 
+/* show_temp_min/max_alarm() reads data from the per-channel status
+   register (sec 12.3.7), not the temp event status registers (sec
+   12.3.2) that show_temp_alarm() reads (via data->temp_alarms) */
+
+static ssize_t show_temp_min_alarm(struct device *dev,
+                       struct device_attribute *devattr, char *buf)
+{
+       struct pc87360_data *data = pc87360_update_device(dev);
+       unsigned nr = to_sensor_dev_attr(devattr)->index;
+
+       return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MIN));
+}
+static ssize_t show_temp_max_alarm(struct device *dev,
+                       struct device_attribute *devattr, char *buf)
+{
+       struct pc87360_data *data = pc87360_update_device(dev);
+       unsigned nr = to_sensor_dev_attr(devattr)->index;
+
+       return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MAX));
+}
+static ssize_t show_temp_crit_alarm(struct device *dev,
+                       struct device_attribute *devattr, char *buf)
+{
+       struct pc87360_data *data = pc87360_update_device(dev);
+       unsigned nr = to_sensor_dev_attr(devattr)->index;
+
+       return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_ALM_CRIT));
+}
+
+static struct sensor_device_attribute temp_min_alarm[] = {
+       SENSOR_ATTR(temp1_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 0),
+       SENSOR_ATTR(temp2_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 1),
+       SENSOR_ATTR(temp3_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 2),
+};
+static struct sensor_device_attribute temp_max_alarm[] = {
+       SENSOR_ATTR(temp1_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 0),
+       SENSOR_ATTR(temp2_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 1),
+       SENSOR_ATTR(temp3_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 2),
+};
+static struct sensor_device_attribute temp_crit_alarm[] = {
+       SENSOR_ATTR(temp1_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 0),
+       SENSOR_ATTR(temp2_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 1),
+       SENSOR_ATTR(temp3_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 2),
+};
+
+#define TEMP_FAULT     0x40    /* open diode */
+static ssize_t show_temp_fault(struct device *dev,
+                       struct device_attribute *devattr, char *buf)
+{
+       struct pc87360_data *data = pc87360_update_device(dev);
+       unsigned nr = to_sensor_dev_attr(devattr)->index;
+
+       return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_FAULT));
+}
+static struct sensor_device_attribute temp_fault[] = {
+       SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0),
+       SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1),
+       SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2),
+};
+
 #define TEMP_UNIT_ATTRS(X) \
        &temp_input[X].dev_attr.attr,   \
        &temp_status[X].dev_attr.attr,  \
        &temp_min[X].dev_attr.attr,     \
        &temp_max[X].dev_attr.attr,     \
-       &temp_crit[X].dev_attr.attr
+       &temp_crit[X].dev_attr.attr,    \
+       &temp_min_alarm[X].dev_attr.attr, \
+       &temp_max_alarm[X].dev_attr.attr, \
+       &temp_crit_alarm[X].dev_attr.attr, \
+       &temp_fault[X].dev_attr.attr
 
 static struct attribute * pc8736x_temp_attr_array[] = {
        TEMP_UNIT_ATTRS(0),
@@ -864,8 +986,8 @@ static const struct attribute_group pc8736x_temp_group = {
        .attrs = pc8736x_temp_attr_array,
 };
 
-static ssize_t show_name(struct device *dev, struct device_attribute
-                        *devattr, char *buf)
+static ssize_t show_name(struct device *dev,
+                       struct device_attribute *devattr, char *buf)
 {
        struct pc87360_data *data = dev_get_drvdata(dev);
        return sprintf(buf, "%s\n", data->name);
@@ -1010,7 +1132,7 @@ static int __devinit pc87360_probe(struct platform_device *pdev)
        mutex_init(&data->update_lock);
        platform_set_drvdata(pdev, data);
 
-       for (i = 0; i < 3; i++) {
+       for (i = 0; i < LDNI_MAX; i++) {
                if (((data->address[i] = extra_isa[i]))
                 && !request_region(extra_isa[i], PC87360_EXTENT,
                                    pc87360_driver.driver.name)) {
@@ -1086,7 +1208,15 @@ static int __devinit pc87360_probe(struct platform_device *pdev)
                            || (err = device_create_file(dev,
                                        &temp_crit[i].dev_attr))
                            || (err = device_create_file(dev,
-                                       &temp_status[i].dev_attr)))
+                                       &temp_status[i].dev_attr))
+                           || (err = device_create_file(dev,
+                                       &temp_min_alarm[i].dev_attr))
+                           || (err = device_create_file(dev,
+                                       &temp_max_alarm[i].dev_attr))
+                           || (err = device_create_file(dev,
+                                       &temp_crit_alarm[i].dev_attr))
+                           || (err = device_create_file(dev,
+                                       &temp_fault[i].dev_attr)))
                                goto ERROR3;
                }
                if ((err = device_create_file(dev, &dev_attr_alarms_temp)))
@@ -1192,6 +1322,10 @@ static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
 #define CHAN_ALM_ENA   0x10    /* propagate to alarms-reg ?? (chk val!) */
 #define CHAN_READY     (CHAN_ENA|CHAN_CNVRTD) /* sample ready mask */
 
+#define TEMP_OTS_OE    0x20    /* OTS Output Enable */
+#define VIN_RW1C_MASK  (CHAN_READY|CHAN_ALM_MAX|CHAN_ALM_MIN)   /* 0x87 */
+#define TEMP_RW1C_MASK (VIN_RW1C_MASK|TEMP_ALM_CRIT|TEMP_FAULT) /* 0xCF */
+
 static void pc87360_init_device(struct platform_device *pdev,
                                int use_thermistors)
 {
@@ -1213,10 +1347,11 @@ static void pc87360_init_device(struct platform_device *pdev,
 
        nr = data->innr < 11 ? data->innr : 11;
        for (i = 0; i < nr; i++) {
+               reg = pc87360_read_value(data, LD_IN, i,
+                                        PC87365_REG_IN_STATUS);
+               dev_dbg(&pdev->dev, "bios in%d status:0x%02x\n", i, reg);
                if (init >= init_in[i]) {
                        /* Forcibly enable voltage channel */
-                       reg = pc87360_read_value(data, LD_IN, i,
-                                                PC87365_REG_IN_STATUS);
                        if (!(reg & CHAN_ENA)) {
                                dev_dbg(&pdev->dev, "Forcibly "
                                        "enabling in%d\n", i);
@@ -1229,18 +1364,23 @@ static void pc87360_init_device(struct platform_device *pdev,
 
        /* We can't blindly trust the Super-I/O space configuration bit,
           most BIOS won't set it properly */
+       dev_dbg(&pdev->dev, "bios thermistors:%d\n", use_thermistors);
        for (i = 11; i < data->innr; i++) {
                reg = pc87360_read_value(data, LD_IN, i,
                                         PC87365_REG_TEMP_STATUS);
                use_thermistors = use_thermistors || (reg & CHAN_ENA);
+               /* thermistors are temp[4-6], measured on vin[11-14] */
+               dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i-7, reg);
        }
+       dev_dbg(&pdev->dev, "using thermistors:%d\n", use_thermistors);
 
        i = use_thermistors ? 2 : 0;
        for (; i < data->tempnr; i++) {
+               reg = pc87360_read_value(data, LD_TEMP, i,
+                                        PC87365_REG_TEMP_STATUS);
+               dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i+1, reg);
                if (init >= init_temp[i]) {
                        /* Forcibly enable temperature channel */
-                       reg = pc87360_read_value(data, LD_TEMP, i,
-                                                PC87365_REG_TEMP_STATUS);
                        if (!(reg & CHAN_ENA)) {
                                dev_dbg(&pdev->dev, "Forcibly "
                                        "enabling temp%d\n", i+1);
@@ -1282,6 +1422,7 @@ static void pc87360_init_device(struct platform_device *pdev,
        if (data->innr) {
                reg = pc87360_read_value(data, LD_IN, NO_BANK,
                                         PC87365_REG_IN_CONFIG);
+               dev_dbg(&pdev->dev, "bios vin-cfg:0x%02x\n", reg);
                if (reg & CHAN_ENA) {
                        dev_dbg(&pdev->dev, "Forcibly "
                                "enabling monitoring (VLM)\n");
@@ -1294,6 +1435,7 @@ static void pc87360_init_device(struct platform_device *pdev,
        if (data->tempnr) {
                reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
                                         PC87365_REG_TEMP_CONFIG);
+               dev_dbg(&pdev->dev, "bios temp-cfg:0x%02x\n", reg);
                if (reg & CHAN_ENA) {
                        dev_dbg(&pdev->dev, "Forcibly enabling "
                                "monitoring (TMS)\n");
@@ -1486,6 +1628,11 @@ static int __init pc87360_device_add(unsigned short address)
                        continue;
                res.start = extra_isa[i];
                res.end = extra_isa[i] + PC87360_EXTENT - 1;
+
+               err = acpi_check_resource_conflict(&res);
+               if (err)
+                       goto exit_device_put;
+
                err = platform_device_add_resources(pdev, &res, 1);
                if (err) {
                        printk(KERN_ERR "pc87360: Device resource[%d] "