From: "Pali Rohár" <pali.rohar@gmail.com>
To: Guenter Roeck <linux@roeck-us.net>, Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-kernel@vger.kernel.org, "Pali Rohár" <pali.rohar@gmail.com>
Subject: [PATCH 01/10] i8k: Add support for temperature sensor labels
Date: Sun, 21 Dec 2014 20:54:34 +0100 [thread overview]
Message-ID: <1419191683-31435-2-git-send-email-pali.rohar@gmail.com> (raw)
In-Reply-To: <1419191683-31435-1-git-send-email-pali.rohar@gmail.com>
This patch adds labels for temperature sensors if SMM function with EAX register
0x11a3 reports it. This information was taken from DOS binary NBSVC.MDM.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Pali Rohár <pali.rohar@gmail.com>
Tested-by: Steven Honeyman <stevenhoneyman@gmail.com>
Tested-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
---
drivers/char/i8k.c | 74 +++++++++++++++++++++++++++++++++++++++++++---------
1 file changed, 61 insertions(+), 13 deletions(-)
diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
index e34a019..663868b 100644
--- a/drivers/char/i8k.c
+++ b/drivers/char/i8k.c
@@ -42,6 +42,7 @@
#define I8K_SMM_GET_FAN 0x00a3
#define I8K_SMM_GET_SPEED 0x02a3
#define I8K_SMM_GET_TEMP 0x10a3
+#define I8K_SMM_GET_TEMP_TYPE 0x11a3
#define I8K_SMM_GET_DELL_SIG1 0xfea3
#define I8K_SMM_GET_DELL_SIG2 0xffa3
@@ -288,6 +289,14 @@ static int i8k_set_fan(int fan, int speed)
return i8k_smm(®s) ? : i8k_get_fan_status(fan);
}
+static int i8k_get_temp_type(int sensor)
+{
+ struct smm_regs regs = { .eax = I8K_SMM_GET_TEMP_TYPE, };
+
+ regs.ebx = sensor & 0xff;
+ return i8k_smm(®s) ? : regs.eax & 0xff;
+}
+
/*
* Read the cpu temperature.
*/
@@ -493,6 +502,29 @@ static int i8k_open_fs(struct inode *inode, struct file *file)
* Hwmon interface
*/
+static ssize_t i8k_hwmon_show_temp_label(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ static const char * const labels[] = {
+ "CPU",
+ "GPU",
+ "SODIMM",
+ "Other",
+ "Ambient",
+ "Other",
+ };
+ int index = to_sensor_dev_attr(devattr)->index;
+ int type;
+
+ type = i8k_get_temp_type(index);
+ if (type < 0)
+ return type;
+ if (type >= ARRAY_SIZE(labels))
+ type = ARRAY_SIZE(labels) - 1;
+ return sprintf(buf, "%s\n", labels[type]);
+}
+
static ssize_t i8k_hwmon_show_temp(struct device *dev,
struct device_attribute *devattr,
char *buf)
@@ -555,9 +587,17 @@ static ssize_t i8k_hwmon_set_pwm(struct device *dev,
}
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,
+ 0);
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,
+ 1);
static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,
+ 2);
static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,
+ 3);
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, i8k_hwmon_show_fan, NULL,
I8K_FAN_LEFT);
static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, i8k_hwmon_show_pwm,
@@ -569,31 +609,39 @@ static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, i8k_hwmon_show_pwm,
static struct attribute *i8k_attrs[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr, /* 0 */
- &sensor_dev_attr_temp2_input.dev_attr.attr, /* 1 */
- &sensor_dev_attr_temp3_input.dev_attr.attr, /* 2 */
- &sensor_dev_attr_temp4_input.dev_attr.attr, /* 3 */
- &sensor_dev_attr_fan1_input.dev_attr.attr, /* 4 */
- &sensor_dev_attr_pwm1.dev_attr.attr, /* 5 */
- &sensor_dev_attr_fan2_input.dev_attr.attr, /* 6 */
- &sensor_dev_attr_pwm2.dev_attr.attr, /* 7 */
+ &sensor_dev_attr_temp1_label.dev_attr.attr, /* 1 */
+ &sensor_dev_attr_temp2_input.dev_attr.attr, /* 2 */
+ &sensor_dev_attr_temp2_label.dev_attr.attr, /* 3 */
+ &sensor_dev_attr_temp3_input.dev_attr.attr, /* 4 */
+ &sensor_dev_attr_temp3_label.dev_attr.attr, /* 5 */
+ &sensor_dev_attr_temp4_input.dev_attr.attr, /* 6 */
+ &sensor_dev_attr_temp4_label.dev_attr.attr, /* 7 */
+ &sensor_dev_attr_fan1_input.dev_attr.attr, /* 8 */
+ &sensor_dev_attr_pwm1.dev_attr.attr, /* 9 */
+ &sensor_dev_attr_fan2_input.dev_attr.attr, /* 10 */
+ &sensor_dev_attr_pwm2.dev_attr.attr, /* 11 */
NULL
};
static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr,
int index)
{
- if (index == 0 && !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP1))
+ if (index >= 0 && index <= 1 &&
+ !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP1))
return 0;
- if (index == 1 && !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP2))
+ if (index >= 2 && index <= 3 &&
+ !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP2))
return 0;
- if (index == 2 && !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP3))
+ if (index >= 4 && index <= 5 &&
+ !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP3))
return 0;
- if (index == 3 && !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP4))
+ if (index >= 6 && index <= 7 &&
+ !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP4))
return 0;
- if (index >= 4 && index <= 5 &&
+ if (index >= 8 && index <= 9 &&
!(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN1))
return 0;
- if (index >= 6 && index <= 7 &&
+ if (index >= 10 && index <= 11 &&
!(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN2))
return 0;
--
1.7.9.5
next prev parent reply other threads:[~2014-12-21 19:55 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-21 19:54 [PATCH 00/10] i8k patches Pali Rohár
2014-12-21 19:54 ` Pali Rohár [this message]
2014-12-21 19:54 ` [PATCH 02/10] i8k: Register only temperature sensors which have labels Pali Rohár
2014-12-21 19:54 ` [PATCH 03/10] i8k: Return -ENODATA for invalid temperature Pali Rohár
2014-12-21 19:54 ` [PATCH 04/10] MAINTAINERS: Fix up entry for Dell laptop SMM driver Pali Rohár
2014-12-21 19:54 ` [PATCH 05/10] i8k: Rework error retries Pali Rohár
2014-12-21 19:54 ` [PATCH 06/10] i8k: Add support for Dell XPS 13 Pali Rohár
2014-12-21 19:54 ` [PATCH 07/10] i8k: Make fan module parameters an unsigned Pali Rohár
2014-12-21 19:54 ` [PATCH 08/10] i8k: Autodetect maximal fan speed and fan RPM multiplier Pali Rohár
2014-12-21 22:58 ` Guenter Roeck
2014-12-21 19:54 ` [PATCH 09/10] i8k: Remove DMI config data for Latitude E6440 and E6540 Pali Rohár
2014-12-21 22:58 ` Guenter Roeck
2014-12-21 19:54 ` [PATCH 10/10] i8k: Add support for fan labels Pali Rohár
2014-12-21 23:01 ` Guenter Roeck
2014-12-22 8:07 ` Pali Rohár
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