From: Marco Chiappero <marco@xxxxxxxxxx>
This setting is stored in the EC and available across reboots.
[malattia@xxxxxxxx: group function specific variables in a struct, use
kstrtoul]
Signed-off-by: Marco Chiappero <marco@xxxxxxxxxx>
Signed-off-by: Mattia Dongili <malattia@xxxxxxxx>
---
drivers/platform/x86/sony-laptop.c | 91 ++++++++++++++++++++++++++++++++++++
1 file changed, 91 insertions(+)
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 2614262..3a95855 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -159,6 +159,10 @@ static void sony_nc_lid_resume_cleanup(struct platform_device *pd);
static int sony_nc_highspeed_charging_setup(struct platform_device *pd);
static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd);
+static int sony_nc_touchpad_setup(struct platform_device *pd,
+ unsigned int handle);
+static void sony_nc_touchpad_cleanup(struct platform_device *pd);
+
struct gsensor_control {
int handle;
unsigned int attrs_num;
@@ -1368,6 +1372,14 @@ static void sony_nc_function_setup(struct acpi_device *device,
/* setup hotkeys */
sony_call_snc_handle(handle, 0x100, &result);
break;
+ case 0x0105:
+ case 0x0148:
+ /* touchpad enable/disable */
+ result = sony_nc_touchpad_setup(pf_device, handle);
+ if (result)
+ pr_err("couldn't set up touchpad control function (%d)\n",
+ result);
+ break;
case 0x0115:
case 0x0136:
case 0x013f:
@@ -1452,6 +1464,10 @@ static void sony_nc_function_cleanup(struct platform_device *pd)
continue;
switch (handle) {
+ case 0x0105:
+ case 0x0148:
+ sony_nc_touchpad_cleanup(pd);
+ break;
case 0x0115:
case 0x0136:
case 0x013f:
@@ -3675,6 +3691,81 @@ static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd)
}
}
+/* Touchpad enable/disable */
+struct touchpad_control {
+ struct device_attribute attr;
+ int handle;
+};
+static struct touchpad_control *tp_ctl;
+
+static ssize_t sony_nc_touchpad_store(struct device *dev,
+ struct device_attribute *attr, const char *buffer, size_t count)
+{
+ unsigned int result;
+ unsigned long value;
+
+ if (count > 31)
+ return -EINVAL;
+
+ if (kstrtoul(buffer, 10, &value) || value > 1)
+ return -EINVAL;
+
+ /* sysfs: 0 disabled, 1 enabled
+ * EC: 0 enabled, 1 disabled
+ */
+ if (sony_call_snc_handle(tp_ctl->handle,
+ (!value << 0x10) | 0x100, &result))
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t sony_nc_touchpad_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ unsigned int result;
+
+ if (sony_call_snc_handle(tp_ctl->handle, 0x000, &result))
+ return -EINVAL;
+
+ return snprintf(buffer, PAGE_SIZE, "%d\n", !(result & 0x01));
+}
+
+static int sony_nc_touchpad_setup(struct platform_device *pd,
+ unsigned int handle)
+{
+ int ret = 0;
+
+ tp_ctl = kzalloc(sizeof(struct touchpad_control), GFP_KERNEL);
+ if (!tp_ctl)
+ return -ENOMEM;
+
+ tp_ctl->handle = handle;
+
+ sysfs_attr_init(&tp_ctl->attr.attr);
+ tp_ctl->attr.attr.name = "touchpad";
+ tp_ctl->attr.attr.mode = S_IRUGO | S_IWUSR;
+ tp_ctl->attr.show = sony_nc_touchpad_show;
+ tp_ctl->attr.store = sony_nc_touchpad_store;
+
+ ret = device_create_file(&pd->dev, &tp_ctl->attr);
+ if (ret) {
+ kfree(tp_ctl);
+ tp_ctl = NULL;
+ }
+
+ return ret;
+}
+
+static void sony_nc_touchpad_cleanup(struct platform_device *pd)
+{
+ if (tp_ctl) {
+ device_remove_file(&pd->dev, &tp_ctl->attr);
+ kfree(tp_ctl);
+ tp_ctl = NULL;
+ }
+}
+
static void sony_nc_backlight_ng_read_limits(int handle,
struct sony_backlight_props *props)
{
--
1.7.10
--
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