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Message-ID: <20071219040123.GN6870@tree.beaverton.ibm.com>
Date: Tue, 18 Dec 2007 20:01:23 -0800
From: "Darrick J. Wong" <djwong@...ibm.com>
To: lm-sensors <lm-sensors@...sensors.org>
Cc: "Mark M. Hoffman" <mhoffman@...htlink.com>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH] adt7470: Support per-sensor alarm files
Remove the old alarms sysfs hack and replace it with per-sensor alarm files.
Also don't read the second alarm register if it's not needed.
Signed-off-by: Darrick J. Wong <djwong@...ibm.com>
---
drivers/hwmon/adt7470.c | 97 ++++++++++++++++++++++++++++++++++++++++++-----
1 files changed, 86 insertions(+), 11 deletions(-)
diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index a215560..59ba7e5 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -48,7 +48,22 @@ I2C_CLIENT_INSMOD_1(adt7470);
#define ADT7470_REG_CFG 0x40
#define ADT7470_FSPD_MASK 0x04
#define ADT7470_REG_ALARM1 0x41
+#define ADT7470_R1T_ALARM 0x01
+#define ADT7470_R2T_ALARM 0x02
+#define ADT7470_R3T_ALARM 0x04
+#define ADT7470_R4T_ALARM 0x08
+#define ADT7470_R5T_ALARM 0x10
+#define ADT7470_R6T_ALARM 0x20
+#define ADT7470_R7T_ALARM 0x40
+#define ADT7470_OOL_ALARM 0x80
#define ADT7470_REG_ALARM2 0x42
+#define ADT7470_R8T_ALARM 0x01
+#define ADT7470_R9T_ALARM 0x02
+#define ADT7470_R10T_ALARM 0x04
+#define ADT7470_FAN1_ALARM 0x10
+#define ADT7470_FAN2_ALARM 0x20
+#define ADT7470_FAN3_ALARM 0x40
+#define ADT7470_FAN4_ALARM 0x80
#define ADT7470_REG_TEMP_LIMITS_BASE_ADDR 0x44
#define ADT7470_REG_TEMP_LIMITS_MAX_ADDR 0x57
#define ADT7470_REG_FAN_MIN_BASE_ADDR 0x58
@@ -97,6 +112,8 @@ I2C_CLIENT_INSMOD_1(adt7470);
#define ADT7470_REG_PWM_AUTO_TEMP(x) (ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR + \
((x) / 2))
+#define ALARM2(x) ((x) << 8)
+
#define ADT7470_VENDOR 0x41
#define ADT7470_DEVICE 0x70
/* datasheet only mentions a revision 2 */
@@ -136,7 +153,8 @@ struct adt7470_data {
u16 fan[ADT7470_FAN_COUNT];
u16 fan_min[ADT7470_FAN_COUNT];
u16 fan_max[ADT7470_FAN_COUNT];
- u16 alarms, alarms_mask;
+ u8 alarm1, alarm2;
+ u16 alarms_mask;
u8 force_pwm_max;
u8 pwm[ADT7470_PWM_COUNT];
u8 pwm_max[ADT7470_PWM_COUNT];
@@ -260,7 +278,12 @@ static struct adt7470_data *adt7470_update_device(struct device *dev)
else
data->force_pwm_max = 0;
- data->alarms = adt7470_read_word_data(client, ADT7470_REG_ALARM1);
+ data->alarm1 = i2c_smbus_read_byte_data(client, ADT7470_REG_ALARM1);
+ if (data->alarm2 & ADT7470_OOL_ALARM)
+ data->alarm2 = i2c_smbus_read_byte_data(client,
+ ADT7470_REG_ALARM2);
+ else
+ data->alarm2 = 0;
data->alarms_mask = adt7470_read_word_data(client,
ADT7470_REG_ALARM1_MASK);
@@ -368,17 +391,13 @@ static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
return sprintf(buf, "%d\n", 1000 * data->temp[attr->index]);
}
-static ssize_t show_alarms(struct device *dev,
+static ssize_t show_alarm_mask(struct device *dev,
struct device_attribute *devattr,
char *buf)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct adt7470_data *data = adt7470_update_device(dev);
- if (attr->index)
- return sprintf(buf, "%x\n", data->alarms);
- else
- return sprintf(buf, "%x\n", data->alarms_mask);
+ return sprintf(buf, "%x\n", data->alarms_mask);
}
static ssize_t show_fan_max(struct device *dev,
@@ -713,8 +732,21 @@ static ssize_t set_pwm_auto_temp(struct device *dev,
return count;
}
-static SENSOR_DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL, 0);
-static SENSOR_DEVICE_ATTR(alarm_mask, S_IRUGO, show_alarms, NULL, 1);
+static ssize_t show_alarm(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct adt7470_data *data = adt7470_update_device(dev);
+
+ if (data->alarm1 & (attr->index & 0xFF) ||
+ data->alarm2 & (attr->index >> 8))
+ return sprintf(buf, "1\n");
+ else
+ return sprintf(buf, "0\n");
+}
+
+static SENSOR_DEVICE_ATTR(alarm_mask, S_IRUGO, show_alarm_mask, NULL, 0);
static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
set_temp_max, 0);
@@ -769,6 +801,27 @@ static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7);
static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8);
static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, show_temp, NULL, 9);
+static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R1T_ALARM);
+static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R2T_ALARM);
+static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R3T_ALARM);
+static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R4T_ALARM);
+static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R5T_ALARM);
+static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R6T_ALARM);
+static SENSOR_DEVICE_ATTR(temp7_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R7T_ALARM);
+static SENSOR_DEVICE_ATTR(temp8_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R8T_ALARM);
+static SENSOR_DEVICE_ATTR(temp9_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R9T_ALARM);
+static SENSOR_DEVICE_ATTR(temp10_alarm, S_IRUGO, show_alarm, NULL,
+ ADT7470_R10T_ALARM);
+
static SENSOR_DEVICE_ATTR(fan1_max, S_IWUSR | S_IRUGO, show_fan_max,
set_fan_max, 0);
static SENSOR_DEVICE_ATTR(fan2_max, S_IWUSR | S_IRUGO, show_fan_max,
@@ -792,6 +845,15 @@ static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3);
+static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL,
+ ALARM2(ADT7470_FAN1_ALARM));
+static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL,
+ ALARM2(ADT7470_FAN2_ALARM));
+static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL,
+ ALARM2(ADT7470_FAN3_ALARM));
+static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL,
+ ALARM2(ADT7470_FAN4_ALARM));
+
static SENSOR_DEVICE_ATTR(force_pwm_max, S_IWUSR | S_IRUGO,
show_force_pwm_max, set_force_pwm_max, 0);
@@ -856,7 +918,6 @@ static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IWUSR | S_IRUGO,
static struct attribute *adt7470_attr[] =
{
- &sensor_dev_attr_alarms.dev_attr.attr,
&sensor_dev_attr_alarm_mask.dev_attr.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp2_max.dev_attr.attr,
@@ -888,6 +949,16 @@ static struct attribute *adt7470_attr[] =
&sensor_dev_attr_temp8_input.dev_attr.attr,
&sensor_dev_attr_temp9_input.dev_attr.attr,
&sensor_dev_attr_temp10_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp4_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp5_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp6_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp7_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp8_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp9_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp10_alarm.dev_attr.attr,
&sensor_dev_attr_fan1_max.dev_attr.attr,
&sensor_dev_attr_fan2_max.dev_attr.attr,
&sensor_dev_attr_fan3_max.dev_attr.attr,
@@ -900,6 +971,10 @@ static struct attribute *adt7470_attr[] =
&sensor_dev_attr_fan2_input.dev_attr.attr,
&sensor_dev_attr_fan3_input.dev_attr.attr,
&sensor_dev_attr_fan4_input.dev_attr.attr,
+ &sensor_dev_attr_fan1_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan2_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan3_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan4_alarm.dev_attr.attr,
&sensor_dev_attr_force_pwm_max.dev_attr.attr,
&sensor_dev_attr_pwm1.dev_attr.attr,
&sensor_dev_attr_pwm2.dev_attr.attr,
--
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