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authorDarrick J. Wong <djwong@us.ibm.com>2008-08-15 00:40:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-15 08:35:43 -0700
commit963d96b53e1f4ebf4db0b8b7ba71ff7b438fbee0 (patch)
treea5b1f190e82331528efa8f8df79a82905b89e790 /drivers/hwmon/i5k_amb.c
parentd42139a3fbd9793cf3747287e8f5c1ae06e06942 (diff)
i5k_amb: provide labels for temperature sensors
Export the sensor -> channel/dimm mapping in tempX_label. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/hwmon/i5k_amb.c')
-rw-r--r--drivers/hwmon/i5k_amb.c28
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/hwmon/i5k_amb.c b/drivers/hwmon/i5k_amb.c
index f9e2ed621f7b..2ede9388096b 100644
--- a/drivers/hwmon/i5k_amb.c
+++ b/drivers/hwmon/i5k_amb.c
@@ -81,6 +81,8 @@ static unsigned long amb_reg_temp(unsigned int amb)
#define MAX_AMBS_PER_CHANNEL 16
#define MAX_AMBS (MAX_MEM_CHANNELS * \
MAX_AMBS_PER_CHANNEL)
+#define CHANNEL_SHIFT 4
+#define DIMM_MASK 0xF
/*
* Ugly hack: For some reason the highest bit is set if there
* are _any_ DIMMs in the channel. Attempting to read from
@@ -89,7 +91,7 @@ static unsigned long amb_reg_temp(unsigned int amb)
* might prevent us from seeing the 16th DIMM in the channel.
*/
#define REAL_MAX_AMBS_PER_CHANNEL 15
-#define KNOBS_PER_AMB 5
+#define KNOBS_PER_AMB 6
static unsigned long amb_num_from_reg(unsigned int byte_num, unsigned int bit)
{
@@ -238,6 +240,16 @@ static ssize_t show_amb_temp(struct device *dev,
500 * amb_read_byte(data, amb_reg_temp(attr->index)));
}
+static ssize_t show_label(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+
+ return sprintf(buf, "Ch. %d DIMM %d\n", attr->index >> CHANNEL_SHIFT,
+ attr->index & DIMM_MASK);
+}
+
static int __devinit i5k_amb_hwmon_init(struct platform_device *pdev)
{
int i, j, k, d = 0;
@@ -268,6 +280,20 @@ static int __devinit i5k_amb_hwmon_init(struct platform_device *pdev)
continue;
d++;
+ /* sysfs label */
+ iattr = data->attrs + data->num_attrs;
+ snprintf(iattr->name, AMB_SYSFS_NAME_LEN,
+ "temp%d_label", d);
+ iattr->s_attr.dev_attr.attr.name = iattr->name;
+ iattr->s_attr.dev_attr.attr.mode = S_IRUGO;
+ iattr->s_attr.dev_attr.show = show_label;
+ iattr->s_attr.index = k;
+ res = device_create_file(&pdev->dev,
+ &iattr->s_attr.dev_attr);
+ if (res)
+ goto exit_remove;
+ data->num_attrs++;
+
/* Temperature sysfs knob */
iattr = data->attrs + data->num_attrs;
snprintf(iattr->name, AMB_SYSFS_NAME_LEN,