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ideapad: add Lenovo IdeaPad Z570 support (part 3) 

The patch adds support for Lenovo IdeaPad Z570 laptop. It makes all special
keys working, adds possibility to control fan like Windows does, controls
Touchpad Disabled LED, toggles touchpad state via keyboard controller and
corrects touchpad behavior on resume from suspend. It is new, modified
version of patch. Now it does not depend on psmouse and does not need patching
of input subsystem.

Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com>

This is the part 3 for fan control

Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Maxim Mikityanskiy 2012-07-06 16:08:11 +08:00 committed by Matthew Garrett
parent 07a4a4fc83
commit 0c7bbeb9f1
2 changed files with 51 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
Documentation/ABI/testing/sysfs-platform-ideapad-laptop
View File

@ -5,4 +5,15 @@ Contact: "Ike Panhc <ike.pan@canonical.com>"
Description:
Control the power of camera module. 1 means on, 0 means off.
What: /sys/devices/platform/ideapad/fan_mode
Date: June 2012
KernelVersion: 3.6
Contact: "Maxim Mikityanskiy <maxtram95@gmail.com>"
Description:
Change fan mode
There are four available modes:
* 0 -> Super Silent Mode
* 1 -> Standard Mode
* 2 -> Dust Cleaning
* 4 -> Efficient Thermal Dissipation Mode

43
drivers/platform/x86/ideapad-laptop.c
View File

@ -64,8 +64,10 @@ enum {
VPCCMD_R_3G,
VPCCMD_W_3G,
VPCCMD_R_ODD, /* 0x21 */
VPCCMD_R_RF = 0x23,
VPCCMD_W_FAN,
VPCCMD_R_RF,
VPCCMD_W_RF,
VPCCMD_R_FAN = 0x2B,
VPCCMD_R_SPECIAL_BUTTONS = 0x31,
VPCCMD_W_BL_POWER = 0x33,
};
@ -358,14 +360,46 @@ static ssize_t store_ideapad_cam(struct device *dev,
return -EINVAL;
ret = write_ec_cmd(ideapad_handle, VPCCMD_W_CAMERA, state);
if (ret < 0)
return ret;
return -EIO;
return count;
}
static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
static ssize_t show_ideapad_fan(struct device *dev,
struct device_attribute *attr,
char *buf)
{
unsigned long result;
if (read_ec_data(ideapad_handle, VPCCMD_R_FAN, &result))
return sprintf(buf, "-1\n");
return sprintf(buf, "%lu\n", result);
}
static ssize_t store_ideapad_fan(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int ret, state;
if (!count)
return 0;
if (sscanf(buf, "%i", &state) != 1)
return -EINVAL;
if (state < 0 || state > 4 || state == 3)
return -EINVAL;
ret = write_ec_cmd(ideapad_handle, VPCCMD_W_FAN, state);
if (ret < 0)
return -EIO;
return count;
}
static DEVICE_ATTR(fan_mode, 0644, show_ideapad_fan, store_ideapad_fan);
static struct attribute *ideapad_attributes[] = {
&dev_attr_camera_power.attr,
&dev_attr_fan_mode.attr,
NULL
};
@ -379,7 +413,10 @@ static umode_t ideapad_is_visible(struct kobject *kobj,
if (attr == &dev_attr_camera_power.attr)
supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg));
else
else if (attr == &dev_attr_fan_mode.attr) {
unsigned long value;
supported = !read_ec_data(ideapad_handle, VPCCMD_R_FAN, &value);
} else
supported = true;
return supported ? attr->mode : 0;